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 | ||
293e7e51 SM |
424 | /* Return a type that is a generic pointer type, the size of which |
425 | matches the address size given in the compilation unit header for | |
426 | this CU. */ | |
427 | struct type *addr_type () const; | |
428 | ||
429 | /* Find an integer type the same size as the address size given in | |
430 | the compilation unit header for this CU. UNSIGNED_P controls if | |
431 | the integer is unsigned or not. */ | |
432 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
433 | ||
d00adf39 | 434 | /* The header of the compilation unit. */ |
fcd3b13d | 435 | struct comp_unit_head header {}; |
e142c38c | 436 | |
d00adf39 | 437 | /* Base address of this compilation unit. */ |
2b24b6e4 | 438 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 439 | |
e142c38c | 440 | /* The language we are debugging. */ |
fcd3b13d SM |
441 | enum language language = language_unknown; |
442 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 443 | |
fcd3b13d | 444 | const char *producer = nullptr; |
b0f35d58 | 445 | |
c24bdb02 | 446 | private: |
804d2729 TT |
447 | /* The symtab builder for this CU. This is only non-NULL when full |
448 | symbols are being read. */ | |
c24bdb02 | 449 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 450 | |
c24bdb02 | 451 | public: |
e142c38c DJ |
452 | /* The generic symbol table building routines have separate lists for |
453 | file scope symbols and all all other scopes (local scopes). So | |
454 | we need to select the right one to pass to add_symbol_to_list(). | |
455 | We do it by keeping a pointer to the correct list in list_in_scope. | |
456 | ||
457 | FIXME: The original dwarf code just treated the file scope as the | |
458 | first local scope, and all other local scopes as nested local | |
459 | scopes, and worked fine. Check to see if we really need to | |
460 | distinguish these in buildsym.c. */ | |
fcd3b13d | 461 | struct pending **list_in_scope = nullptr; |
e142c38c | 462 | |
b64f50a1 JK |
463 | /* Hash table holding all the loaded partial DIEs |
464 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 465 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
466 | |
467 | /* Storage for things with the same lifetime as this read-in compilation | |
468 | unit, including partial DIEs. */ | |
fcd3b13d | 469 | auto_obstack comp_unit_obstack; |
72bf9492 | 470 | |
ae038cb0 DJ |
471 | /* When multiple dwarf2_cu structures are living in memory, this field |
472 | chains them all together, so that they can be released efficiently. | |
473 | We will probably also want a generation counter so that most-recently-used | |
474 | compilation units are cached... */ | |
fcd3b13d | 475 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 476 | |
69d751e3 | 477 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
478 | struct dwarf2_per_cu_data *per_cu; |
479 | ||
9e021579 SM |
480 | /* The dwarf2_per_objfile that owns this. */ |
481 | struct dwarf2_per_objfile *per_objfile; | |
482 | ||
ae038cb0 | 483 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 484 | int last_used = 0; |
ae038cb0 | 485 | |
b64f50a1 JK |
486 | /* A hash table of DIE cu_offset for following references with |
487 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 488 | htab_t die_hash = nullptr; |
10b3939b DJ |
489 | |
490 | /* Full DIEs if read in. */ | |
fcd3b13d | 491 | struct die_info *dies = nullptr; |
10b3939b DJ |
492 | |
493 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
494 | units referenced by this one. Only set during full symbol processing; | |
495 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 496 | htab_t dependencies = nullptr; |
10b3939b | 497 | |
cb1df416 | 498 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 499 | struct line_header *line_header = nullptr; |
4c8aa72d | 500 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 501 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
502 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
503 | to the line header as long as this DIE is being processed. See | |
504 | process_die_scope. */ | |
fcd3b13d | 505 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 506 | |
3da10d80 KS |
507 | /* A list of methods which need to have physnames computed |
508 | after all type information has been read. */ | |
c89b44cd | 509 | std::vector<delayed_method_info> method_list; |
3da10d80 | 510 | |
96408a79 | 511 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 512 | htab_t call_site_htab = nullptr; |
96408a79 | 513 | |
034e5797 DE |
514 | /* Non-NULL if this CU came from a DWO file. |
515 | There is an invariant here that is important to remember: | |
516 | Except for attributes copied from the top level DIE in the "main" | |
517 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 518 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
519 | Either there isn't a DWO file (in which case this is NULL and the point |
520 | is moot), or there is and either we're not going to read it (in which | |
521 | case this is NULL) or there is and we are reading it (in which case this | |
522 | is non-NULL). */ | |
fcd3b13d | 523 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 524 | |
18a8505e | 525 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 526 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 527 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 528 | |
18a8505e | 529 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 530 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 531 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
532 | be used without needing to know whether DWO files are in use or not. |
533 | N.B. This does not apply to DW_AT_ranges appearing in | |
534 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
535 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 536 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 537 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 538 | ULONGEST ranges_base = 0; |
2e3cf129 | 539 | |
41144253 | 540 | /* The DW_AT_loclists_base attribute if present. */ |
541 | ULONGEST loclist_base = 0; | |
542 | ||
c9317f21 TT |
543 | /* When reading debug info generated by older versions of rustc, we |
544 | have to rewrite some union types to be struct types with a | |
545 | variant part. This rewriting must be done after the CU is fully | |
546 | read in, because otherwise at the point of rewriting some struct | |
547 | type might not have been fully processed. So, we keep a list of | |
548 | all such types here and process them after expansion. */ | |
549 | std::vector<struct type *> rust_unions; | |
550 | ||
18a8505e AT |
551 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
552 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
553 | value is often implicit and is the size of the header of | |
554 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
555 | gdb::optional<ULONGEST> str_offsets_base; | |
556 | ||
ae038cb0 | 557 | /* Mark used when releasing cached dies. */ |
9068261f | 558 | bool mark : 1; |
ae038cb0 | 559 | |
8be455d7 JK |
560 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
561 | This test is imperfect as there may exist optimized debug code not using | |
562 | any location list and still facing inlining issues if handled as | |
563 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 564 | bool has_loclist : 1; |
ba919b58 | 565 | |
9068261f | 566 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
567 | if all the producer_is_* fields are valid. This information is cached |
568 | because profiling CU expansion showed excessive time spent in | |
569 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
570 | bool checked_producer : 1; |
571 | bool producer_is_gxx_lt_4_6 : 1; | |
572 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 573 | bool producer_is_icc : 1; |
9068261f | 574 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 575 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 576 | |
9068261f | 577 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
578 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
579 | this information, but later versions do. */ | |
580 | ||
9068261f | 581 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
582 | |
583 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
584 | |
585 | /* If this CU was inherited by another CU (via specification, | |
586 | abstract_origin, etc), this is the ancestor CU. */ | |
587 | dwarf2_cu *ancestor; | |
588 | ||
589 | /* Get the buildsym_compunit for this CU. */ | |
590 | buildsym_compunit *get_builder () | |
591 | { | |
592 | /* If this CU has a builder associated with it, use that. */ | |
593 | if (m_builder != nullptr) | |
594 | return m_builder.get (); | |
595 | ||
596 | /* Otherwise, search ancestors for a valid builder. */ | |
597 | if (ancestor != nullptr) | |
598 | return ancestor->get_builder (); | |
599 | ||
600 | return nullptr; | |
601 | } | |
e7c27a73 DJ |
602 | }; |
603 | ||
094b34ac DE |
604 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
605 | This includes type_unit_group and quick_file_names. */ | |
606 | ||
607 | struct stmt_list_hash | |
608 | { | |
609 | /* The DWO unit this table is from or NULL if there is none. */ | |
610 | struct dwo_unit *dwo_unit; | |
611 | ||
612 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 613 | sect_offset line_sect_off; |
094b34ac DE |
614 | }; |
615 | ||
5989a64e | 616 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
617 | an object of this type. This contains elements of type unit groups |
618 | that can be shared across objfiles. The non-shareable parts are in | |
619 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
620 | |
621 | struct type_unit_group | |
622 | { | |
0186c6a7 | 623 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
624 | To simplify things we create an artificial CU that "includes" all the |
625 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 626 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
627 | struct dwarf2_per_cu_data per_cu; |
628 | ||
0186c6a7 DE |
629 | /* The TUs that share this DW_AT_stmt_list entry. |
630 | This is added to while parsing type units to build partial symtabs, | |
631 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 632 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 633 | |
094b34ac DE |
634 | /* The data used to construct the hash key. */ |
635 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
636 | }; |
637 | ||
73869dc2 | 638 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
639 | |
640 | struct dwo_sections | |
641 | { | |
642 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
643 | struct dwarf2_section_info line; |
644 | struct dwarf2_section_info loc; | |
43988095 | 645 | struct dwarf2_section_info loclists; |
09262596 DE |
646 | struct dwarf2_section_info macinfo; |
647 | struct dwarf2_section_info macro; | |
3019eac3 DE |
648 | struct dwarf2_section_info str; |
649 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
650 | /* In the case of a virtual DWO file, these two are unused. */ |
651 | struct dwarf2_section_info info; | |
fd5866f6 | 652 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
653 | }; |
654 | ||
c88ee1f0 | 655 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
656 | |
657 | struct dwo_unit | |
658 | { | |
659 | /* Backlink to the containing struct dwo_file. */ | |
660 | struct dwo_file *dwo_file; | |
661 | ||
662 | /* The "id" that distinguishes this CU/TU. | |
663 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
664 | Since signatures came first, we stick with it for consistency. */ | |
665 | ULONGEST signature; | |
666 | ||
667 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 668 | struct dwarf2_section_info *section; |
3019eac3 | 669 | |
9c541725 PA |
670 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
671 | sect_offset sect_off; | |
3019eac3 DE |
672 | unsigned int length; |
673 | ||
674 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
675 | cu_offset type_offset_in_tu; | |
676 | }; | |
677 | ||
73869dc2 DE |
678 | /* include/dwarf2.h defines the DWP section codes. |
679 | It defines a max value but it doesn't define a min value, which we | |
680 | use for error checking, so provide one. */ | |
681 | ||
682 | enum dwp_v2_section_ids | |
683 | { | |
684 | DW_SECT_MIN = 1 | |
685 | }; | |
686 | ||
80626a55 | 687 | /* Data for one DWO file. |
57d63ce2 DE |
688 | |
689 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
690 | appears in a DWP file). DWP files don't really have DWO files per se - | |
691 | comdat folding of types "loses" the DWO file they came from, and from | |
692 | a high level view DWP files appear to contain a mass of random types. | |
693 | However, to maintain consistency with the non-DWP case we pretend DWP | |
694 | files contain virtual DWO files, and we assign each TU with one virtual | |
695 | DWO file (generally based on the line and abbrev section offsets - | |
696 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
697 | |
698 | struct dwo_file | |
699 | { | |
51ac9db5 SM |
700 | dwo_file () = default; |
701 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
702 | ||
18a8505e | 703 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
704 | For virtual DWO files the name is constructed from the section offsets |
705 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
706 | from related CU+TUs. */ | |
51ac9db5 | 707 | const char *dwo_name = nullptr; |
0ac5b59e DE |
708 | |
709 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 710 | const char *comp_dir = nullptr; |
3019eac3 | 711 | |
80626a55 DE |
712 | /* The bfd, when the file is open. Otherwise this is NULL. |
713 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 714 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 715 | |
73869dc2 DE |
716 | /* The sections that make up this DWO file. |
717 | Remember that for virtual DWO files in DWP V2, these are virtual | |
718 | sections (for lack of a better name). */ | |
51ac9db5 | 719 | struct dwo_sections sections {}; |
3019eac3 | 720 | |
33c5cd75 DB |
721 | /* The CUs in the file. |
722 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
723 | an extension to handle LLVM's Link Time Optimization output (where | |
724 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 725 | htab_up cus; |
3019eac3 DE |
726 | |
727 | /* Table of TUs in the file. | |
728 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 729 | htab_up tus; |
3019eac3 DE |
730 | }; |
731 | ||
80626a55 DE |
732 | /* These sections are what may appear in a DWP file. */ |
733 | ||
734 | struct dwp_sections | |
735 | { | |
73869dc2 | 736 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
737 | struct dwarf2_section_info str; |
738 | struct dwarf2_section_info cu_index; | |
739 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
740 | |
741 | /* These are only used by DWP version 2 files. | |
742 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
743 | sections are referenced by section number, and are not recorded here. | |
744 | In DWP version 2 there is at most one copy of all these sections, each | |
745 | section being (effectively) comprised of the concatenation of all of the | |
746 | individual sections that exist in the version 1 format. | |
747 | To keep the code simple we treat each of these concatenated pieces as a | |
748 | section itself (a virtual section?). */ | |
749 | struct dwarf2_section_info abbrev; | |
750 | struct dwarf2_section_info info; | |
751 | struct dwarf2_section_info line; | |
752 | struct dwarf2_section_info loc; | |
753 | struct dwarf2_section_info macinfo; | |
754 | struct dwarf2_section_info macro; | |
755 | struct dwarf2_section_info str_offsets; | |
756 | struct dwarf2_section_info types; | |
80626a55 DE |
757 | }; |
758 | ||
73869dc2 DE |
759 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
760 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 761 | |
73869dc2 | 762 | struct virtual_v1_dwo_sections |
80626a55 DE |
763 | { |
764 | struct dwarf2_section_info abbrev; | |
765 | struct dwarf2_section_info line; | |
766 | struct dwarf2_section_info loc; | |
767 | struct dwarf2_section_info macinfo; | |
768 | struct dwarf2_section_info macro; | |
769 | struct dwarf2_section_info str_offsets; | |
770 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 771 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
772 | struct dwarf2_section_info info_or_types; |
773 | }; | |
774 | ||
73869dc2 DE |
775 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
776 | In version 2, the sections of the DWO files are concatenated together | |
777 | and stored in one section of that name. Thus each ELF section contains | |
778 | several "virtual" sections. */ | |
779 | ||
780 | struct virtual_v2_dwo_sections | |
781 | { | |
782 | bfd_size_type abbrev_offset; | |
783 | bfd_size_type abbrev_size; | |
784 | ||
785 | bfd_size_type line_offset; | |
786 | bfd_size_type line_size; | |
787 | ||
788 | bfd_size_type loc_offset; | |
789 | bfd_size_type loc_size; | |
790 | ||
791 | bfd_size_type macinfo_offset; | |
792 | bfd_size_type macinfo_size; | |
793 | ||
794 | bfd_size_type macro_offset; | |
795 | bfd_size_type macro_size; | |
796 | ||
797 | bfd_size_type str_offsets_offset; | |
798 | bfd_size_type str_offsets_size; | |
799 | ||
800 | /* Each DWP hash table entry records one CU or one TU. | |
801 | That is recorded here, and copied to dwo_unit.section. */ | |
802 | bfd_size_type info_or_types_offset; | |
803 | bfd_size_type info_or_types_size; | |
804 | }; | |
805 | ||
80626a55 DE |
806 | /* Contents of DWP hash tables. */ |
807 | ||
808 | struct dwp_hash_table | |
809 | { | |
73869dc2 | 810 | uint32_t version, nr_columns; |
80626a55 | 811 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
812 | const gdb_byte *hash_table, *unit_table; |
813 | union | |
814 | { | |
815 | struct | |
816 | { | |
817 | const gdb_byte *indices; | |
818 | } v1; | |
819 | struct | |
820 | { | |
821 | /* This is indexed by column number and gives the id of the section | |
822 | in that column. */ | |
823 | #define MAX_NR_V2_DWO_SECTIONS \ | |
824 | (1 /* .debug_info or .debug_types */ \ | |
825 | + 1 /* .debug_abbrev */ \ | |
826 | + 1 /* .debug_line */ \ | |
827 | + 1 /* .debug_loc */ \ | |
828 | + 1 /* .debug_str_offsets */ \ | |
829 | + 1 /* .debug_macro or .debug_macinfo */) | |
830 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
831 | const gdb_byte *offsets; | |
832 | const gdb_byte *sizes; | |
833 | } v2; | |
834 | } section_pool; | |
80626a55 DE |
835 | }; |
836 | ||
837 | /* Data for one DWP file. */ | |
838 | ||
839 | struct dwp_file | |
840 | { | |
400174b1 TT |
841 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
842 | : name (name_), | |
843 | dbfd (std::move (abfd)) | |
844 | { | |
845 | } | |
846 | ||
80626a55 DE |
847 | /* Name of the file. */ |
848 | const char *name; | |
849 | ||
73869dc2 | 850 | /* File format version. */ |
400174b1 | 851 | int version = 0; |
73869dc2 | 852 | |
93417882 | 853 | /* The bfd. */ |
400174b1 | 854 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
855 | |
856 | /* Section info for this file. */ | |
400174b1 | 857 | struct dwp_sections sections {}; |
80626a55 | 858 | |
57d63ce2 | 859 | /* Table of CUs in the file. */ |
400174b1 | 860 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
861 | |
862 | /* Table of TUs in the file. */ | |
400174b1 | 863 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 864 | |
19ac8c2e | 865 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
866 | htab_up loaded_cus; |
867 | htab_up loaded_tus; | |
80626a55 | 868 | |
73869dc2 DE |
869 | /* Table to map ELF section numbers to their sections. |
870 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
871 | unsigned int num_sections = 0; |
872 | asection **elf_sections = nullptr; | |
80626a55 DE |
873 | }; |
874 | ||
0963b4bd MS |
875 | /* Struct used to pass misc. parameters to read_die_and_children, et |
876 | al. which are used for both .debug_info and .debug_types dies. | |
877 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 878 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
879 | |
880 | struct die_reader_specs | |
881 | { | |
a32a8923 | 882 | /* The bfd of die_section. */ |
93311388 DE |
883 | bfd* abfd; |
884 | ||
885 | /* The CU of the DIE we are parsing. */ | |
886 | struct dwarf2_cu *cu; | |
887 | ||
80626a55 | 888 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
889 | struct dwo_file *dwo_file; |
890 | ||
dee91e82 | 891 | /* The section the die comes from. |
3019eac3 | 892 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
893 | struct dwarf2_section_info *die_section; |
894 | ||
895 | /* die_section->buffer. */ | |
d521ce57 | 896 | const gdb_byte *buffer; |
f664829e DE |
897 | |
898 | /* The end of the buffer. */ | |
899 | const gdb_byte *buffer_end; | |
a2ce51a0 | 900 | |
685af9cd TT |
901 | /* The abbreviation table to use when reading the DIEs. */ |
902 | struct abbrev_table *abbrev_table; | |
93311388 DE |
903 | }; |
904 | ||
c0ab21c2 TT |
905 | /* A subclass of die_reader_specs that holds storage and has complex |
906 | constructor and destructor behavior. */ | |
907 | ||
908 | class cutu_reader : public die_reader_specs | |
909 | { | |
910 | public: | |
911 | ||
ab432490 SM |
912 | cutu_reader (dwarf2_per_cu_data *this_cu, |
913 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 914 | struct abbrev_table *abbrev_table, |
6751ebae | 915 | int use_existing_cu, |
c0ab21c2 TT |
916 | bool skip_partial); |
917 | ||
918 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 919 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
920 | struct dwarf2_cu *parent_cu = nullptr, |
921 | struct dwo_file *dwo_file = nullptr); | |
922 | ||
c0ab21c2 TT |
923 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
924 | ||
925 | const gdb_byte *info_ptr = nullptr; | |
926 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
927 | bool dummy_p = false; |
928 | ||
6751ebae TT |
929 | /* Release the new CU, putting it on the chain. This cannot be done |
930 | for dummy CUs. */ | |
931 | void keep (); | |
932 | ||
c0ab21c2 | 933 | private: |
9e021579 SM |
934 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
935 | dwarf2_per_objfile *per_objfile, | |
6751ebae | 936 | int use_existing_cu); |
c0ab21c2 TT |
937 | |
938 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
939 | std::unique_ptr<dwarf2_cu> m_new_cu; |
940 | ||
941 | /* The ordinary abbreviation table. */ | |
942 | abbrev_table_up m_abbrev_table_holder; | |
943 | ||
944 | /* The DWO abbreviation table. */ | |
945 | abbrev_table_up m_dwo_abbrev_table; | |
946 | }; | |
dee91e82 | 947 | |
c906108c | 948 | /* When we construct a partial symbol table entry we only |
0963b4bd | 949 | need this much information. */ |
6f06d47b | 950 | struct partial_die_info : public allocate_on_obstack |
c906108c | 951 | { |
6f06d47b YQ |
952 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
953 | ||
954 | /* Disable assign but still keep copy ctor, which is needed | |
955 | load_partial_dies. */ | |
956 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
957 | ||
52356b79 YQ |
958 | /* Adjust the partial die before generating a symbol for it. This |
959 | function may set the is_external flag or change the DIE's | |
960 | name. */ | |
961 | void fixup (struct dwarf2_cu *cu); | |
962 | ||
48fbe735 YQ |
963 | /* Read a minimal amount of information into the minimal die |
964 | structure. */ | |
965 | const gdb_byte *read (const struct die_reader_specs *reader, | |
966 | const struct abbrev_info &abbrev, | |
967 | const gdb_byte *info_ptr); | |
968 | ||
72bf9492 | 969 | /* Offset of this DIE. */ |
6f06d47b | 970 | const sect_offset sect_off; |
72bf9492 DJ |
971 | |
972 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 973 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 974 | |
72bf9492 | 975 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
976 | const unsigned int has_children : 1; |
977 | ||
72bf9492 DJ |
978 | unsigned int is_external : 1; |
979 | unsigned int is_declaration : 1; | |
980 | unsigned int has_type : 1; | |
981 | unsigned int has_specification : 1; | |
982 | unsigned int has_pc_info : 1; | |
481860b3 | 983 | unsigned int may_be_inlined : 1; |
72bf9492 | 984 | |
0c1b455e TT |
985 | /* This DIE has been marked DW_AT_main_subprogram. */ |
986 | unsigned int main_subprogram : 1; | |
987 | ||
72bf9492 DJ |
988 | /* Flag set if the SCOPE field of this structure has been |
989 | computed. */ | |
990 | unsigned int scope_set : 1; | |
991 | ||
fa4028e9 JB |
992 | /* Flag set if the DIE has a byte_size attribute. */ |
993 | unsigned int has_byte_size : 1; | |
994 | ||
ff908ebf AW |
995 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
996 | unsigned int has_const_value : 1; | |
997 | ||
98bfdba5 PA |
998 | /* Flag set if any of the DIE's children are template arguments. */ |
999 | unsigned int has_template_arguments : 1; | |
1000 | ||
52356b79 | 1001 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1002 | unsigned int fixup_called : 1; |
1003 | ||
36586728 TT |
1004 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1005 | unsigned int is_dwz : 1; | |
1006 | ||
1007 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1008 | unsigned int spec_is_dwz : 1; | |
1009 | ||
72bf9492 | 1010 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1011 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1012 | const char *name = nullptr; |
72bf9492 | 1013 | |
abc72ce4 | 1014 | /* The linkage name, if present. */ |
6f06d47b | 1015 | const char *linkage_name = nullptr; |
abc72ce4 | 1016 | |
72bf9492 DJ |
1017 | /* The scope to prepend to our children. This is generally |
1018 | allocated on the comp_unit_obstack, so will disappear | |
1019 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1020 | const char *scope = nullptr; |
72bf9492 | 1021 | |
95554aad TT |
1022 | /* Some data associated with the partial DIE. The tag determines |
1023 | which field is live. */ | |
1024 | union | |
1025 | { | |
1026 | /* The location description associated with this DIE, if any. */ | |
1027 | struct dwarf_block *locdesc; | |
1028 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1029 | sect_offset sect_off; |
6f06d47b | 1030 | } d {}; |
72bf9492 DJ |
1031 | |
1032 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1033 | CORE_ADDR lowpc = 0; |
1034 | CORE_ADDR highpc = 0; | |
72bf9492 | 1035 | |
93311388 | 1036 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1037 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1038 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1039 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1040 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1041 | |
1042 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1043 | DW_AT_specification (or DW_AT_abstract_origin or | |
1044 | DW_AT_extension). */ | |
6f06d47b | 1045 | sect_offset spec_offset {}; |
72bf9492 DJ |
1046 | |
1047 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1048 | if any. */ | |
6f06d47b YQ |
1049 | struct partial_die_info *die_parent = nullptr; |
1050 | struct partial_die_info *die_child = nullptr; | |
1051 | struct partial_die_info *die_sibling = nullptr; | |
1052 | ||
1053 | friend struct partial_die_info * | |
1054 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1055 | ||
1056 | private: | |
1057 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1058 | partial_die_info (sect_offset sect_off) | |
1059 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1060 | { | |
1061 | } | |
1062 | ||
1063 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1064 | int has_children_) | |
1065 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1066 | { | |
1067 | is_external = 0; | |
1068 | is_declaration = 0; | |
1069 | has_type = 0; | |
1070 | has_specification = 0; | |
1071 | has_pc_info = 0; | |
1072 | may_be_inlined = 0; | |
1073 | main_subprogram = 0; | |
1074 | scope_set = 0; | |
1075 | has_byte_size = 0; | |
1076 | has_const_value = 0; | |
1077 | has_template_arguments = 0; | |
1078 | fixup_called = 0; | |
1079 | is_dwz = 0; | |
1080 | spec_is_dwz = 0; | |
1081 | } | |
c906108c SS |
1082 | }; |
1083 | ||
c906108c SS |
1084 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1085 | but this would require a corresponding change in unpack_field_as_long | |
1086 | and friends. */ | |
1087 | static int bits_per_byte = 8; | |
1088 | ||
9c6a1327 TT |
1089 | struct variant_part_builder; |
1090 | ||
1091 | /* When reading a variant, we track a bit more information about the | |
1092 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1093 | |
1094 | struct variant_field | |
1095 | { | |
9c6a1327 TT |
1096 | int first_field = -1; |
1097 | int last_field = -1; | |
1098 | ||
1099 | /* A variant can contain other variant parts. */ | |
1100 | std::vector<variant_part_builder> variant_parts; | |
1101 | ||
2ddeaf8a TT |
1102 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1103 | default branch. */ | |
9c6a1327 TT |
1104 | bool default_branch = false; |
1105 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1106 | value. */ | |
1107 | ULONGEST discriminant_value = 0; | |
1108 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1109 | data. */ | |
1110 | struct dwarf_block *discr_list_data = nullptr; | |
1111 | }; | |
1112 | ||
1113 | /* This represents a DW_TAG_variant_part. */ | |
1114 | ||
1115 | struct variant_part_builder | |
1116 | { | |
1117 | /* The offset of the discriminant field. */ | |
1118 | sect_offset discriminant_offset {}; | |
1119 | ||
1120 | /* Variants that are direct children of this variant part. */ | |
1121 | std::vector<variant_field> variants; | |
1122 | ||
1123 | /* True if we're currently reading a variant. */ | |
1124 | bool processing_variant = false; | |
2ddeaf8a TT |
1125 | }; |
1126 | ||
52059ffd TT |
1127 | struct nextfield |
1128 | { | |
be2daae6 TT |
1129 | int accessibility = 0; |
1130 | int virtuality = 0; | |
9c6a1327 TT |
1131 | /* Variant parts need to find the discriminant, which is a DIE |
1132 | reference. We track the section offset of each field to make | |
1133 | this link. */ | |
1134 | sect_offset offset; | |
be2daae6 | 1135 | struct field field {}; |
52059ffd TT |
1136 | }; |
1137 | ||
1138 | struct fnfieldlist | |
1139 | { | |
be2daae6 TT |
1140 | const char *name = nullptr; |
1141 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1142 | }; |
1143 | ||
c906108c SS |
1144 | /* The routines that read and process dies for a C struct or C++ class |
1145 | pass lists of data member fields and lists of member function fields | |
1146 | in an instance of a field_info structure, as defined below. */ | |
1147 | struct field_info | |
c5aa993b | 1148 | { |
0963b4bd | 1149 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1150 | std::vector<struct nextfield> fields; |
1151 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1152 | |
85102364 | 1153 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1154 | int non_public_fields = 0; |
c906108c | 1155 | |
c5aa993b JM |
1156 | /* Member function fieldlist array, contains name of possibly overloaded |
1157 | member function, number of overloaded member functions and a pointer | |
1158 | to the head of the member function field chain. */ | |
be2daae6 | 1159 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1160 | |
1161 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1162 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1163 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1164 | |
1165 | /* Nested types defined by this class and the number of elements in this | |
1166 | list. */ | |
be2daae6 | 1167 | std::vector<struct decl_field> nested_types_list; |
317f7127 | 1168 | |
9c6a1327 TT |
1169 | /* If non-null, this is the variant part we are currently |
1170 | reading. */ | |
1171 | variant_part_builder *current_variant_part = nullptr; | |
1172 | /* This holds all the top-level variant parts attached to the type | |
1173 | we're reading. */ | |
1174 | std::vector<variant_part_builder> variant_parts; | |
1175 | ||
317f7127 TT |
1176 | /* Return the total number of fields (including baseclasses). */ |
1177 | int nfields () const | |
1178 | { | |
1179 | return fields.size () + baseclasses.size (); | |
1180 | } | |
c5aa993b | 1181 | }; |
c906108c | 1182 | |
ae038cb0 DJ |
1183 | /* Loaded secondary compilation units are kept in memory until they |
1184 | have not been referenced for the processing of this many | |
1185 | compilation units. Set this to zero to disable caching. Cache | |
1186 | sizes of up to at least twenty will improve startup time for | |
1187 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1188 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1189 | static void |
b4f54984 DE |
1190 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1191 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1192 | { |
3e43a32a | 1193 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1194 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1195 | value); |
1196 | } | |
4390d890 | 1197 | \f |
c906108c SS |
1198 | /* local function prototypes */ |
1199 | ||
918dd910 JK |
1200 | static void dwarf2_find_base_address (struct die_info *die, |
1201 | struct dwarf2_cu *cu); | |
1202 | ||
891813be | 1203 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1204 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1205 | const char *name); | |
0018ea6f | 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 | ||
ab432490 SM |
1513 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1514 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1515 | |
ab432490 SM |
1516 | static void read_signatured_type (signatured_type *sig_type, |
1517 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1518 | |
63e43d3a PMR |
1519 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1520 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1521 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1522 | |
c906108c SS |
1523 | /* memory allocation interface */ |
1524 | ||
7b5a2f43 | 1525 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1526 | |
b60c80d6 | 1527 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1528 | |
43f3e411 | 1529 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1530 | |
8cf6f0b1 TT |
1531 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1532 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1533 | const struct attribute *attr); |
8cf6f0b1 | 1534 | |
ff39bb5e | 1535 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1536 | struct symbol *sym, |
f1e6e072 TT |
1537 | struct dwarf2_cu *cu, |
1538 | int is_block); | |
4c2df51b | 1539 | |
d521ce57 TT |
1540 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1541 | const gdb_byte *info_ptr, | |
1542 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1543 | |
72bf9492 DJ |
1544 | static hashval_t partial_die_hash (const void *item); |
1545 | ||
1546 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1547 | ||
ae038cb0 | 1548 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1549 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1550 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1551 | |
9816fde3 | 1552 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1553 | struct die_info *comp_unit_die, |
1554 | enum language pretend_language); | |
93311388 | 1555 | |
ed2dc618 | 1556 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1557 | |
120ce1b5 SM |
1558 | static void free_one_cached_comp_unit (dwarf2_per_cu_data *target_per_cu, |
1559 | dwarf2_per_objfile *per_objfile); | |
ae038cb0 | 1560 | |
f792889a DJ |
1561 | static struct type *set_die_type (struct die_info *, struct type *, |
1562 | struct dwarf2_cu *); | |
1c379e20 | 1563 | |
ed2dc618 | 1564 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1565 | |
ed2dc618 | 1566 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1567 | |
ab432490 SM |
1568 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1569 | dwarf2_per_objfile *per_objfile, | |
1570 | bool skip_partial, | |
1571 | enum language pretend_language); | |
10b3939b | 1572 | |
47b14e86 SM |
1573 | static void process_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1574 | dwarf2_per_objfile *per_objfile, | |
1575 | enum language pretend_language); | |
10b3939b | 1576 | |
47b14e86 SM |
1577 | static void process_full_type_unit (dwarf2_per_cu_data *per_cu, |
1578 | dwarf2_per_objfile *per_objfile, | |
1579 | enum language pretend_language); | |
f4dc4d17 | 1580 | |
10b3939b DJ |
1581 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1582 | struct dwarf2_per_cu_data *); | |
1583 | ||
ae038cb0 DJ |
1584 | static void dwarf2_mark (struct dwarf2_cu *); |
1585 | ||
1586 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1587 | ||
b64f50a1 | 1588 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1589 | dwarf2_per_cu_data *per_cu, |
1590 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1591 | |
f792889a | 1592 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1593 | |
120ce1b5 SM |
1594 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1595 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1596 | enum language pretend_language); |
1597 | ||
ed2dc618 | 1598 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1599 | |
b303c6f6 AB |
1600 | /* Class, the destructor of which frees all allocated queue entries. This |
1601 | will only have work to do if an error was thrown while processing the | |
1602 | dwarf. If no error was thrown then the queue entries should have all | |
1603 | been processed, and freed, as we went along. */ | |
1604 | ||
1605 | class dwarf2_queue_guard | |
1606 | { | |
1607 | public: | |
39856def TT |
1608 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1609 | : m_per_objfile (per_objfile) | |
1610 | { | |
1611 | } | |
b303c6f6 AB |
1612 | |
1613 | /* Free any entries remaining on the queue. There should only be | |
1614 | entries left if we hit an error while processing the dwarf. */ | |
1615 | ~dwarf2_queue_guard () | |
1616 | { | |
39856def TT |
1617 | /* Ensure that no memory is allocated by the queue. */ |
1618 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1619 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1620 | } |
b303c6f6 | 1621 | |
39856def | 1622 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1623 | |
39856def TT |
1624 | private: |
1625 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1626 | }; |
1627 | ||
39856def TT |
1628 | dwarf2_queue_item::~dwarf2_queue_item () |
1629 | { | |
1630 | /* Anything still marked queued is likely to be in an | |
1631 | inconsistent state, so discard it. */ | |
1632 | if (per_cu->queued) | |
1633 | { | |
1634 | if (per_cu->cu != NULL) | |
120ce1b5 | 1635 | free_one_cached_comp_unit (per_cu, per_objfile); |
39856def TT |
1636 | per_cu->queued = 0; |
1637 | } | |
1638 | } | |
1639 | ||
d721ba37 PA |
1640 | /* The return type of find_file_and_directory. Note, the enclosed |
1641 | string pointers are only valid while this object is valid. */ | |
1642 | ||
1643 | struct file_and_directory | |
1644 | { | |
1645 | /* The filename. This is never NULL. */ | |
1646 | const char *name; | |
1647 | ||
1648 | /* The compilation directory. NULL if not known. If we needed to | |
1649 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1650 | points directly to the DW_AT_comp_dir string attribute owned by | |
1651 | the obstack that owns the DIE. */ | |
1652 | const char *comp_dir; | |
1653 | ||
1654 | /* If we needed to build a new string for comp_dir, this is what | |
1655 | owns the storage. */ | |
1656 | std::string comp_dir_storage; | |
1657 | }; | |
1658 | ||
1659 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1660 | struct dwarf2_cu *cu); | |
9291a0cd | 1661 | |
298e9637 | 1662 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1663 | |
298e9637 | 1664 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1665 | |
57d63ce2 | 1666 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1667 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1668 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1669 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1670 | |
ed2dc618 SM |
1671 | static struct dwp_file *get_dwp_file |
1672 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1673 | |
3019eac3 | 1674 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1675 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1676 | ULONGEST signature); | |
3019eac3 DE |
1677 | |
1678 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1679 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1680 | |
89e63ee4 DE |
1681 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1682 | ||
263db9a1 TT |
1683 | /* A unique pointer to a dwo_file. */ |
1684 | ||
51ac9db5 | 1685 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1686 | |
ed2dc618 | 1687 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1688 | |
1b80a9fa | 1689 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1690 | |
1691 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1692 | \f |
1693 | /* Various complaints about symbol reading that don't abort the process. */ | |
1694 | ||
4390d890 DE |
1695 | static void |
1696 | dwarf2_debug_line_missing_file_complaint (void) | |
1697 | { | |
b98664d3 | 1698 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1699 | } |
1700 | ||
1701 | static void | |
1702 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1703 | { | |
b98664d3 | 1704 | complaint (_(".debug_line section has line " |
4390d890 DE |
1705 | "program sequence without an end")); |
1706 | } | |
1707 | ||
1708 | static void | |
1709 | dwarf2_complex_location_expr_complaint (void) | |
1710 | { | |
b98664d3 | 1711 | complaint (_("location expression too complex")); |
4390d890 DE |
1712 | } |
1713 | ||
1714 | static void | |
1715 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1716 | int arg3) | |
1717 | { | |
b98664d3 | 1718 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1719 | arg1, arg2, arg3); |
1720 | } | |
1721 | ||
4390d890 DE |
1722 | static void |
1723 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1724 | { | |
b98664d3 | 1725 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1726 | arg1, arg2); |
1727 | } | |
527f3840 JK |
1728 | |
1729 | /* Hash function for line_header_hash. */ | |
1730 | ||
1731 | static hashval_t | |
1732 | line_header_hash (const struct line_header *ofs) | |
1733 | { | |
9c541725 | 1734 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1735 | } |
1736 | ||
1737 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1738 | ||
1739 | static hashval_t | |
1740 | line_header_hash_voidp (const void *item) | |
1741 | { | |
9a3c8263 | 1742 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1743 | |
1744 | return line_header_hash (ofs); | |
1745 | } | |
1746 | ||
1747 | /* Equality function for line_header_hash. */ | |
1748 | ||
1749 | static int | |
1750 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1751 | { | |
9a3c8263 SM |
1752 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1753 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1754 | |
9c541725 | 1755 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1756 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1757 | } | |
1758 | ||
4390d890 | 1759 | \f |
9291a0cd | 1760 | |
330cdd98 PA |
1761 | /* See declaration. */ |
1762 | ||
5989a64e SM |
1763 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1764 | bool can_copy_) | |
c3699833 SM |
1765 | : obfd (obfd), |
1766 | can_copy (can_copy_) | |
330cdd98 PA |
1767 | { |
1768 | if (names == NULL) | |
1769 | names = &dwarf2_elf_names; | |
1770 | ||
330cdd98 PA |
1771 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1772 | locate_sections (obfd, sec, *names); | |
1773 | } | |
1774 | ||
5989a64e | 1775 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 PA |
1776 | { |
1777 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
1778 | free_cached_comp_units (); | |
1779 | ||
b76e467d | 1780 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1781 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1782 | |
b2bdb8cf | 1783 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1784 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1785 | |
5989a64e | 1786 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1787 | } |
1788 | ||
1789 | /* See declaration. */ | |
1790 | ||
1791 | void | |
5989a64e | 1792 | dwarf2_per_bfd::free_cached_comp_units () |
330cdd98 PA |
1793 | { |
1794 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
1795 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
1796 | while (per_cu != NULL) | |
1797 | { | |
1798 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
1799 | ||
fcd3b13d | 1800 | delete per_cu->cu; |
330cdd98 PA |
1801 | *last_chain = next_cu; |
1802 | per_cu = next_cu; | |
1803 | } | |
1804 | } | |
1805 | ||
11ed8cad TT |
1806 | /* A helper class that calls free_cached_comp_units on |
1807 | destruction. */ | |
1808 | ||
1809 | class free_cached_comp_units | |
1810 | { | |
1811 | public: | |
1812 | ||
1813 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1814 | : m_per_objfile (per_objfile) | |
1815 | { | |
1816 | } | |
1817 | ||
1818 | ~free_cached_comp_units () | |
1819 | { | |
5989a64e | 1820 | m_per_objfile->per_bfd->free_cached_comp_units (); |
11ed8cad TT |
1821 | } |
1822 | ||
1823 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1824 | ||
1825 | private: | |
1826 | ||
1827 | dwarf2_per_objfile *m_per_objfile; | |
1828 | }; | |
1829 | ||
af758d11 SM |
1830 | /* See read.h. */ |
1831 | ||
1832 | bool | |
1833 | dwarf2_per_objfile::symtab_set_p (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] != nullptr; | |
1838 | } | |
1839 | ||
1840 | /* See read.h. */ | |
1841 | ||
1842 | compunit_symtab * | |
1843 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1844 | { | |
1845 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1846 | ||
1847 | return this->m_symtabs[per_cu->index]; | |
1848 | } | |
1849 | ||
1850 | /* See read.h. */ | |
1851 | ||
1852 | void | |
1853 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1854 | compunit_symtab *symtab) | |
1855 | { | |
1856 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1857 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1858 | ||
1859 | this->m_symtabs[per_cu->index] = symtab; | |
1860 | } | |
1861 | ||
c906108c | 1862 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1863 | information and return true if we have enough to do something. |
1864 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1865 | ELF names are used. CAN_COPY is true for formats where symbol |
1866 | interposition is possible and so symbol values must follow copy | |
1867 | relocation rules. */ | |
c906108c SS |
1868 | |
1869 | int | |
251d32d9 | 1870 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1871 | const struct dwarf2_debug_sections *names, |
1872 | bool can_copy) | |
c906108c | 1873 | { |
97cbe998 SDJ |
1874 | if (objfile->flags & OBJF_READNEVER) |
1875 | return 0; | |
1876 | ||
ed2dc618 SM |
1877 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1878 | = get_dwarf2_per_objfile (objfile); | |
1879 | ||
1880 | if (dwarf2_per_objfile == NULL) | |
5989a64e SM |
1881 | { |
1882 | /* For now, each dwarf2_per_objfile owns its own dwarf2_per_bfd (no | |
1883 | sharing yet). */ | |
1884 | dwarf2_per_bfd *per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1885 | ||
1886 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); | |
1887 | } | |
5bfd760d | 1888 | |
5989a64e SM |
1889 | return (!dwarf2_per_objfile->per_bfd->info.is_virtual |
1890 | && dwarf2_per_objfile->per_bfd->info.s.section != NULL | |
1891 | && !dwarf2_per_objfile->per_bfd->abbrev.is_virtual | |
1892 | && dwarf2_per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1893 | } |
1894 | ||
251d32d9 TG |
1895 | /* When loading sections, we look either for uncompressed section or for |
1896 | compressed section names. */ | |
233a11ab CS |
1897 | |
1898 | static int | |
251d32d9 TG |
1899 | section_is_p (const char *section_name, |
1900 | const struct dwarf2_section_names *names) | |
233a11ab | 1901 | { |
251d32d9 TG |
1902 | if (names->normal != NULL |
1903 | && strcmp (section_name, names->normal) == 0) | |
1904 | return 1; | |
1905 | if (names->compressed != NULL | |
1906 | && strcmp (section_name, names->compressed) == 0) | |
1907 | return 1; | |
1908 | return 0; | |
233a11ab CS |
1909 | } |
1910 | ||
330cdd98 | 1911 | /* See declaration. */ |
c906108c | 1912 | |
330cdd98 | 1913 | void |
5989a64e SM |
1914 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1915 | const dwarf2_debug_sections &names) | |
c906108c | 1916 | { |
fd361982 | 1917 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1918 | |
dc7650b8 JK |
1919 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1920 | { | |
1921 | } | |
950b7495 KS |
1922 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1923 | > bfd_get_file_size (abfd)) | |
1924 | { | |
1925 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1926 | warning (_("Discarding section %s which has a section size (%s" | |
1927 | ") larger than the file size [in module %s]"), | |
1928 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1929 | bfd_get_filename (abfd)); | |
1930 | } | |
330cdd98 | 1931 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1932 | { |
330cdd98 | 1933 | this->info.s.section = sectp; |
fd361982 | 1934 | this->info.size = bfd_section_size (sectp); |
c906108c | 1935 | } |
330cdd98 | 1936 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1937 | { |
330cdd98 | 1938 | this->abbrev.s.section = sectp; |
fd361982 | 1939 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1940 | } |
330cdd98 | 1941 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1942 | { |
330cdd98 | 1943 | this->line.s.section = sectp; |
fd361982 | 1944 | this->line.size = bfd_section_size (sectp); |
c906108c | 1945 | } |
330cdd98 | 1946 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1947 | { |
330cdd98 | 1948 | this->loc.s.section = sectp; |
fd361982 | 1949 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1950 | } |
330cdd98 | 1951 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1952 | { |
330cdd98 | 1953 | this->loclists.s.section = sectp; |
fd361982 | 1954 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1955 | } |
330cdd98 | 1956 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1957 | { |
330cdd98 | 1958 | this->macinfo.s.section = sectp; |
fd361982 | 1959 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1960 | } |
330cdd98 | 1961 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1962 | { |
330cdd98 | 1963 | this->macro.s.section = sectp; |
fd361982 | 1964 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1965 | } |
330cdd98 | 1966 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1967 | { |
330cdd98 | 1968 | this->str.s.section = sectp; |
fd361982 | 1969 | this->str.size = bfd_section_size (sectp); |
c906108c | 1970 | } |
18a8505e AT |
1971 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1972 | { | |
1973 | this->str_offsets.s.section = sectp; | |
1974 | this->str_offsets.size = bfd_section_size (sectp); | |
1975 | } | |
330cdd98 | 1976 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1977 | { |
330cdd98 | 1978 | this->line_str.s.section = sectp; |
fd361982 | 1979 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1980 | } |
330cdd98 | 1981 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1982 | { |
330cdd98 | 1983 | this->addr.s.section = sectp; |
fd361982 | 1984 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1985 | } |
330cdd98 | 1986 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1987 | { |
330cdd98 | 1988 | this->frame.s.section = sectp; |
fd361982 | 1989 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1990 | } |
330cdd98 | 1991 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1992 | { |
330cdd98 | 1993 | this->eh_frame.s.section = sectp; |
fd361982 | 1994 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1995 | } |
330cdd98 | 1996 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1997 | { |
330cdd98 | 1998 | this->ranges.s.section = sectp; |
fd361982 | 1999 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2000 | } |
330cdd98 | 2001 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2002 | { |
330cdd98 | 2003 | this->rnglists.s.section = sectp; |
fd361982 | 2004 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2005 | } |
330cdd98 | 2006 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2007 | { |
8b70b953 TT |
2008 | struct dwarf2_section_info type_section; |
2009 | ||
2010 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2011 | type_section.s.section = sectp; |
fd361982 | 2012 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2013 | |
fd5866f6 | 2014 | this->types.push_back (type_section); |
348e048f | 2015 | } |
330cdd98 | 2016 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2017 | { |
330cdd98 | 2018 | this->gdb_index.s.section = sectp; |
fd361982 | 2019 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2020 | } |
927aa2e7 JK |
2021 | else if (section_is_p (sectp->name, &names.debug_names)) |
2022 | { | |
2023 | this->debug_names.s.section = sectp; | |
fd361982 | 2024 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2025 | } |
2026 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2027 | { | |
2028 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2029 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2030 | } |
dce234bc | 2031 | |
fd361982 AM |
2032 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2033 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2034 | this->has_section_at_zero = true; |
c906108c SS |
2035 | } |
2036 | ||
dce234bc | 2037 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2038 | SECTION_NAME. */ |
af34e669 | 2039 | |
dce234bc | 2040 | void |
3017a003 TG |
2041 | dwarf2_get_section_info (struct objfile *objfile, |
2042 | enum dwarf2_section_enum sect, | |
d521ce57 | 2043 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2044 | bfd_size_type *sizep) |
2045 | { | |
5bfd760d | 2046 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2047 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2048 | |
2049 | /* We may see an objfile without any DWARF, in which case we just | |
2050 | return nothing. */ | |
2051 | if (data == NULL) | |
2052 | { | |
2053 | *sectp = NULL; | |
2054 | *bufp = NULL; | |
2055 | *sizep = 0; | |
2056 | return; | |
2057 | } | |
3017a003 TG |
2058 | switch (sect) |
2059 | { | |
2060 | case DWARF2_DEBUG_FRAME: | |
5989a64e | 2061 | info = &data->per_bfd->frame; |
3017a003 TG |
2062 | break; |
2063 | case DWARF2_EH_FRAME: | |
5989a64e | 2064 | info = &data->per_bfd->eh_frame; |
3017a003 TG |
2065 | break; |
2066 | default: | |
2067 | gdb_assert_not_reached ("unexpected section"); | |
2068 | } | |
dce234bc | 2069 | |
96b79293 | 2070 | info->read (objfile); |
dce234bc | 2071 | |
96b79293 | 2072 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2073 | *bufp = info->buffer; |
2074 | *sizep = info->size; | |
2075 | } | |
2076 | ||
36586728 TT |
2077 | /* A helper function to find the sections for a .dwz file. */ |
2078 | ||
2079 | static void | |
2080 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2081 | { | |
9a3c8263 | 2082 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2083 | |
2084 | /* Note that we only support the standard ELF names, because .dwz | |
2085 | is ELF-only (at the time of writing). */ | |
2086 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2087 | { | |
049412e3 | 2088 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2089 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2090 | } |
2091 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2092 | { | |
049412e3 | 2093 | dwz_file->info.s.section = sectp; |
fd361982 | 2094 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2095 | } |
2096 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2097 | { | |
049412e3 | 2098 | dwz_file->str.s.section = sectp; |
fd361982 | 2099 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2100 | } |
2101 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2102 | { | |
049412e3 | 2103 | dwz_file->line.s.section = sectp; |
fd361982 | 2104 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2105 | } |
2106 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2107 | { | |
049412e3 | 2108 | dwz_file->macro.s.section = sectp; |
fd361982 | 2109 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2110 | } |
2ec9a5e0 TT |
2111 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2112 | { | |
049412e3 | 2113 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2114 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2115 | } |
927aa2e7 JK |
2116 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2117 | { | |
2118 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2119 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2120 | } |
36586728 TT |
2121 | } |
2122 | ||
c4973306 | 2123 | /* See dwarf2read.h. */ |
36586728 | 2124 | |
c4973306 | 2125 | struct dwz_file * |
c3699833 | 2126 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2127 | { |
36586728 | 2128 | const char *filename; |
acd13123 | 2129 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2130 | size_t buildid_len; |
2131 | bfd_byte *buildid; | |
36586728 | 2132 | |
c3699833 SM |
2133 | if (per_bfd->dwz_file != NULL) |
2134 | return per_bfd->dwz_file.get (); | |
36586728 | 2135 | |
4db1a1dc | 2136 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2137 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2138 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2139 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2140 | if (data == NULL) |
2141 | { | |
2142 | if (bfd_get_error () == bfd_error_no_error) | |
2143 | return NULL; | |
2144 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2145 | bfd_errmsg (bfd_get_error ())); | |
2146 | } | |
791afaa2 TT |
2147 | |
2148 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2149 | |
acd13123 TT |
2150 | buildid_len = (size_t) buildid_len_arg; |
2151 | ||
791afaa2 | 2152 | filename = data.get (); |
d721ba37 PA |
2153 | |
2154 | std::string abs_storage; | |
36586728 TT |
2155 | if (!IS_ABSOLUTE_PATH (filename)) |
2156 | { | |
14278e1f | 2157 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2158 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2159 | |
14278e1f | 2160 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2161 | filename = abs_storage.c_str (); |
36586728 TT |
2162 | } |
2163 | ||
dc294be5 TT |
2164 | /* First try the file name given in the section. If that doesn't |
2165 | work, try to use the build-id instead. */ | |
ad80db5b | 2166 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2167 | if (dwz_bfd != NULL) |
36586728 | 2168 | { |
192b62ce | 2169 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2170 | dwz_bfd.reset (nullptr); |
36586728 TT |
2171 | } |
2172 | ||
dc294be5 TT |
2173 | if (dwz_bfd == NULL) |
2174 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2175 | ||
0d79cdc4 AM |
2176 | if (dwz_bfd == nullptr) |
2177 | { | |
2178 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2179 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2180 | |
2181 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2182 | buildid_len, | |
2183 | origname, | |
2184 | &alt_filename)); | |
2185 | ||
2186 | if (fd.get () >= 0) | |
2187 | { | |
2188 | /* File successfully retrieved from server. */ | |
ad80db5b | 2189 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2190 | |
2191 | if (dwz_bfd == nullptr) | |
2192 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2193 | alt_filename.get ()); | |
2194 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2195 | dwz_bfd.reset (nullptr); | |
2196 | } | |
2197 | } | |
2198 | ||
dc294be5 TT |
2199 | if (dwz_bfd == NULL) |
2200 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2201 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2202 | |
7ff8cb8c TT |
2203 | std::unique_ptr<struct dwz_file> result |
2204 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2205 | |
7ff8cb8c TT |
2206 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2207 | result.get ()); | |
36586728 | 2208 | |
c3699833 SM |
2209 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2210 | per_bfd->dwz_file = std::move (result); | |
2211 | return per_bfd->dwz_file.get (); | |
36586728 | 2212 | } |
9291a0cd | 2213 | \f |
7b9f3c50 DE |
2214 | /* DWARF quick_symbols_functions support. */ |
2215 | ||
2216 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2217 | unique line tables, so we maintain a separate table of all .debug_line | |
2218 | derived entries to support the sharing. | |
2219 | All the quick functions need is the list of file names. We discard the | |
2220 | line_header when we're done and don't need to record it here. */ | |
2221 | struct quick_file_names | |
2222 | { | |
094b34ac DE |
2223 | /* The data used to construct the hash key. */ |
2224 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2225 | |
2226 | /* The number of entries in file_names, real_names. */ | |
2227 | unsigned int num_file_names; | |
2228 | ||
2229 | /* The file names from the line table, after being run through | |
2230 | file_full_name. */ | |
2231 | const char **file_names; | |
2232 | ||
2233 | /* The file names from the line table after being run through | |
2234 | gdb_realpath. These are computed lazily. */ | |
2235 | const char **real_names; | |
2236 | }; | |
2237 | ||
2238 | /* When using the index (and thus not using psymtabs), each CU has an | |
2239 | object of this type. This is used to hold information needed by | |
2240 | the various "quick" methods. */ | |
2241 | struct dwarf2_per_cu_quick_data | |
2242 | { | |
2243 | /* The file table. This can be NULL if there was no file table | |
2244 | or it's currently not read in. | |
5989a64e | 2245 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2246 | struct quick_file_names *file_names; |
2247 | ||
7b9f3c50 DE |
2248 | /* A temporary mark bit used when iterating over all CUs in |
2249 | expand_symtabs_matching. */ | |
2250 | unsigned int mark : 1; | |
2251 | ||
2252 | /* True if we've tried to read the file table and found there isn't one. | |
2253 | There will be no point in trying to read it again next time. */ | |
2254 | unsigned int no_file_data : 1; | |
2255 | }; | |
2256 | ||
094b34ac DE |
2257 | /* Utility hash function for a stmt_list_hash. */ |
2258 | ||
2259 | static hashval_t | |
2260 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2261 | { | |
2262 | hashval_t v = 0; | |
2263 | ||
2264 | if (stmt_list_hash->dwo_unit != NULL) | |
2265 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2266 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2267 | return v; |
2268 | } | |
2269 | ||
2270 | /* Utility equality function for a stmt_list_hash. */ | |
2271 | ||
2272 | static int | |
2273 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2274 | const struct stmt_list_hash *rhs) | |
2275 | { | |
2276 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2277 | return 0; | |
2278 | if (lhs->dwo_unit != NULL | |
2279 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2280 | return 0; | |
2281 | ||
9c541725 | 2282 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2283 | } |
2284 | ||
7b9f3c50 DE |
2285 | /* Hash function for a quick_file_names. */ |
2286 | ||
2287 | static hashval_t | |
2288 | hash_file_name_entry (const void *e) | |
2289 | { | |
9a3c8263 SM |
2290 | const struct quick_file_names *file_data |
2291 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2292 | |
094b34ac | 2293 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2294 | } |
2295 | ||
2296 | /* Equality function for a quick_file_names. */ | |
2297 | ||
2298 | static int | |
2299 | eq_file_name_entry (const void *a, const void *b) | |
2300 | { | |
9a3c8263 SM |
2301 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2302 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2303 | |
094b34ac | 2304 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2305 | } |
2306 | ||
2307 | /* Delete function for a quick_file_names. */ | |
2308 | ||
2309 | static void | |
2310 | delete_file_name_entry (void *e) | |
2311 | { | |
9a3c8263 | 2312 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2313 | int i; |
2314 | ||
2315 | for (i = 0; i < file_data->num_file_names; ++i) | |
2316 | { | |
2317 | xfree ((void*) file_data->file_names[i]); | |
2318 | if (file_data->real_names) | |
2319 | xfree ((void*) file_data->real_names[i]); | |
2320 | } | |
2321 | ||
45940949 TT |
2322 | /* The space for the struct itself lives on the obstack, so we don't |
2323 | free it here. */ | |
7b9f3c50 DE |
2324 | } |
2325 | ||
2326 | /* Create a quick_file_names hash table. */ | |
2327 | ||
5895093f | 2328 | static htab_up |
7b9f3c50 DE |
2329 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2330 | { | |
5895093f TT |
2331 | return htab_up (htab_create_alloc (nr_initial_entries, |
2332 | hash_file_name_entry, eq_file_name_entry, | |
2333 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2334 | } |
9291a0cd | 2335 | |
ab432490 SM |
2336 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2337 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2338 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 JK |
2339 | |
2340 | static void | |
ab432490 SM |
2341 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2342 | bool skip_partial) | |
918dd910 | 2343 | { |
3019eac3 | 2344 | if (per_cu->is_debug_types) |
ab432490 | 2345 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2346 | else |
ab432490 | 2347 | load_full_comp_unit (per_cu, per_objfile, skip_partial, language_minimal); |
918dd910 | 2348 | |
cc12ce38 DE |
2349 | if (per_cu->cu == NULL) |
2350 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2351 | |
2352 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2353 | } |
2354 | ||
97a1449a | 2355 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2356 | |
9291a0cd | 2357 | static void |
97a1449a SM |
2358 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2359 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2360 | bool skip_partial) | |
9291a0cd | 2361 | { |
f4dc4d17 DE |
2362 | /* Skip type_unit_groups, reading the type units they contain |
2363 | is handled elsewhere. */ | |
197400e8 | 2364 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2365 | return; |
2366 | ||
b303c6f6 AB |
2367 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2368 | the queue. After this point we're guaranteed to leave this function | |
2369 | with the dwarf queue empty. */ | |
39856def | 2370 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2371 | |
af758d11 | 2372 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
95554aad | 2373 | { |
120ce1b5 | 2374 | queue_comp_unit (per_cu, dwarf2_per_objfile, language_minimal); |
ab432490 | 2375 | load_cu (per_cu, dwarf2_per_objfile, skip_partial); |
89e63ee4 DE |
2376 | |
2377 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2378 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2379 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2380 | if (!per_cu->is_debug_types | |
cc12ce38 | 2381 | && per_cu->cu != NULL |
89e63ee4 | 2382 | && per_cu->cu->dwo_unit != NULL |
5989a64e SM |
2383 | && dwarf2_per_objfile->per_bfd->index_table != NULL |
2384 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2385 | /* DWP files aren't supported yet. */ |
ed2dc618 | 2386 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2387 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2388 | } |
9291a0cd | 2389 | |
ed2dc618 | 2390 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2391 | |
2392 | /* Age the cache, releasing compilation units that have not | |
2393 | been used recently. */ | |
ed2dc618 | 2394 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2395 | } |
2396 | ||
97a1449a SM |
2397 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2398 | the per-objfile for which this symtab is instantiated. | |
2399 | ||
2400 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2401 | |
43f3e411 | 2402 | static struct compunit_symtab * |
97a1449a SM |
2403 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2404 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2405 | bool skip_partial) | |
9291a0cd | 2406 | { |
5989a64e | 2407 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
af758d11 SM |
2408 | |
2409 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) | |
9291a0cd | 2410 | { |
11ed8cad | 2411 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2412 | scoped_restore decrementer = increment_reading_symtab (); |
97a1449a | 2413 | dw2_do_instantiate_symtab (per_cu, dwarf2_per_objfile, skip_partial); |
ed2dc618 | 2414 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2415 | } |
f194fefb | 2416 | |
af758d11 | 2417 | return dwarf2_per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2418 | } |
2419 | ||
ff4c9fec | 2420 | /* See declaration. */ |
f4dc4d17 | 2421 | |
ff4c9fec | 2422 | dwarf2_per_cu_data * |
5989a64e | 2423 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2424 | { |
b76e467d | 2425 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2426 | { |
b76e467d | 2427 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2428 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2429 | return &this->all_type_units[index]->per_cu; |
2430 | } | |
f4dc4d17 | 2431 | |
ff4c9fec SM |
2432 | return this->all_comp_units[index]; |
2433 | } | |
f4dc4d17 | 2434 | |
ff4c9fec | 2435 | /* See declaration. */ |
2fdf6df6 | 2436 | |
ff4c9fec | 2437 | dwarf2_per_cu_data * |
5989a64e | 2438 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2439 | { |
b76e467d | 2440 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2441 | |
ff4c9fec | 2442 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2443 | } |
2444 | ||
ff4c9fec | 2445 | /* See declaration. */ |
f4dc4d17 | 2446 | |
ff4c9fec | 2447 | signatured_type * |
5989a64e | 2448 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2449 | { |
b2bdb8cf | 2450 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2451 | |
ff4c9fec | 2452 | return this->all_type_units[index]; |
1fd400ff TT |
2453 | } |
2454 | ||
d3473f0c TT |
2455 | /* See read.h. */ |
2456 | ||
2457 | dwarf2_per_cu_data * | |
5989a64e | 2458 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2459 | { |
2460 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2461 | result->per_bfd = this; |
d3473f0c TT |
2462 | result->index = m_num_psymtabs++; |
2463 | return result; | |
2464 | } | |
2465 | ||
2466 | /* See read.h. */ | |
2467 | ||
2468 | signatured_type * | |
5989a64e | 2469 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2470 | { |
2471 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2472 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2473 | result->per_cu.index = m_num_psymtabs++; |
2474 | return result; | |
2475 | } | |
2476 | ||
168c9250 | 2477 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2478 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2479 | |
2480 | static dwarf2_per_cu_data * | |
168c9250 SM |
2481 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2482 | struct dwarf2_section_info *section, | |
2483 | int is_dwz, | |
2484 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2485 | { |
168c9250 | 2486 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2487 | the_cu->sect_off = sect_off; |
2488 | the_cu->length = length; | |
4b514bc8 | 2489 | the_cu->section = section; |
168c9250 | 2490 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2491 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2492 | the_cu->is_dwz = is_dwz; |
2493 | return the_cu; | |
2494 | } | |
2495 | ||
2ec9a5e0 TT |
2496 | /* A helper for create_cus_from_index that handles a given list of |
2497 | CUs. */ | |
2fdf6df6 | 2498 | |
74a0d9f6 | 2499 | static void |
168c9250 | 2500 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2501 | const gdb_byte *cu_list, offset_type n_elements, |
2502 | struct dwarf2_section_info *section, | |
b76e467d | 2503 | int is_dwz) |
9291a0cd | 2504 | { |
12359b5e | 2505 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2506 | { |
74a0d9f6 | 2507 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2508 | |
2509 | sect_offset sect_off | |
2510 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2511 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2512 | cu_list += 2 * 8; |
2513 | ||
b76e467d | 2514 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2515 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2516 | length); | |
2517 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2518 | } |
9291a0cd TT |
2519 | } |
2520 | ||
2ec9a5e0 | 2521 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2522 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2523 | |
74a0d9f6 | 2524 | static void |
168c9250 | 2525 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2526 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2527 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2528 | { | |
168c9250 SM |
2529 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2530 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2531 | |
168c9250 SM |
2532 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2533 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2534 | |
2535 | if (dwz_elements == 0) | |
74a0d9f6 | 2536 | return; |
2ec9a5e0 | 2537 | |
168c9250 SM |
2538 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2539 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2540 | &dwz->info, 1); |
2ec9a5e0 TT |
2541 | } |
2542 | ||
1fd400ff | 2543 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2544 | |
74a0d9f6 | 2545 | static void |
12359b5e | 2546 | create_signatured_type_table_from_index |
168c9250 SM |
2547 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2548 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2549 | { |
168c9250 SM |
2550 | gdb_assert (per_bfd->all_type_units.empty ()); |
2551 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2552 | |
298e9637 | 2553 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2554 | |
12359b5e | 2555 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2556 | { |
52dc124a | 2557 | struct signatured_type *sig_type; |
9c541725 | 2558 | ULONGEST signature; |
1fd400ff | 2559 | void **slot; |
9c541725 | 2560 | cu_offset type_offset_in_tu; |
1fd400ff | 2561 | |
74a0d9f6 | 2562 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2563 | sect_offset sect_off |
2564 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2565 | type_offset_in_tu | |
2566 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2567 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2568 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2569 | bytes += 3 * 8; | |
2570 | ||
168c9250 | 2571 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2572 | sig_type->signature = signature; |
9c541725 | 2573 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2574 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2575 | sig_type->per_cu.section = section; |
9c541725 | 2576 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2577 | sig_type->per_cu.v.quick |
168c9250 | 2578 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2579 | struct dwarf2_per_cu_quick_data); |
2580 | ||
b0b6a987 | 2581 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2582 | *slot = sig_type; |
1fd400ff | 2583 | |
168c9250 | 2584 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2585 | } |
2586 | ||
168c9250 | 2587 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2588 | } |
2589 | ||
927aa2e7 JK |
2590 | /* Create the signatured type hash table from .debug_names. */ |
2591 | ||
2592 | static void | |
2593 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2594 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2595 | const mapped_debug_names &map, |
2596 | struct dwarf2_section_info *section, | |
2597 | struct dwarf2_section_info *abbrev_section) | |
2598 | { | |
ed2dc618 SM |
2599 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2600 | ||
96b79293 TT |
2601 | section->read (objfile); |
2602 | abbrev_section->read (objfile); | |
927aa2e7 | 2603 | |
5989a64e SM |
2604 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
2605 | dwarf2_per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2606 | |
298e9637 | 2607 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2608 | |
2609 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2610 | { | |
2611 | struct signatured_type *sig_type; | |
927aa2e7 | 2612 | void **slot; |
927aa2e7 JK |
2613 | |
2614 | sect_offset sect_off | |
2615 | = (sect_offset) (extract_unsigned_integer | |
2616 | (map.tu_table_reordered + i * map.offset_size, | |
2617 | map.offset_size, | |
2618 | map.dwarf5_byte_order)); | |
2619 | ||
2620 | comp_unit_head cu_header; | |
ed2dc618 SM |
2621 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2622 | abbrev_section, | |
927aa2e7 JK |
2623 | section->buffer + to_underlying (sect_off), |
2624 | rcuh_kind::TYPE); | |
2625 | ||
5989a64e | 2626 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2627 | sig_type->signature = cu_header.signature; |
2628 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2629 | sig_type->per_cu.is_debug_types = 1; | |
2630 | sig_type->per_cu.section = section; | |
2631 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2632 | sig_type->per_cu.v.quick |
5989a64e | 2633 | = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2634 | struct dwarf2_per_cu_quick_data); |
2635 | ||
b0b6a987 | 2636 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2637 | *slot = sig_type; |
2638 | ||
5989a64e | 2639 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2640 | } |
2641 | ||
5989a64e | 2642 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2643 | } |
2644 | ||
9291a0cd TT |
2645 | /* Read the address map data from the mapped index, and use it to |
2646 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2647 | |
9291a0cd | 2648 | static void |
ed2dc618 SM |
2649 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2650 | struct mapped_index *index) | |
9291a0cd | 2651 | { |
ed2dc618 | 2652 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 2653 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2654 | const gdb_byte *iter, *end; |
9291a0cd | 2655 | struct addrmap *mutable_map; |
9291a0cd TT |
2656 | CORE_ADDR baseaddr; |
2657 | ||
8268c778 PA |
2658 | auto_obstack temp_obstack; |
2659 | ||
9291a0cd TT |
2660 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2661 | ||
f00a2de2 PA |
2662 | iter = index->address_table.data (); |
2663 | end = iter + index->address_table.size (); | |
9291a0cd | 2664 | |
b3b3bada | 2665 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2666 | |
2667 | while (iter < end) | |
2668 | { | |
2669 | ULONGEST hi, lo, cu_index; | |
2670 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2671 | iter += 8; | |
2672 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2673 | iter += 8; | |
2674 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2675 | iter += 4; | |
f652bce2 | 2676 | |
24a55014 | 2677 | if (lo > hi) |
f652bce2 | 2678 | { |
b98664d3 | 2679 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2680 | hex_string (lo), hex_string (hi)); |
24a55014 | 2681 | continue; |
f652bce2 | 2682 | } |
24a55014 | 2683 | |
5989a64e | 2684 | if (cu_index >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2685 | { |
b98664d3 | 2686 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2687 | (unsigned) cu_index); |
24a55014 | 2688 | continue; |
f652bce2 | 2689 | } |
24a55014 | 2690 | |
79748972 TT |
2691 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2692 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2693 | addrmap_set_empty (mutable_map, lo, hi - 1, |
5989a64e | 2694 | dwarf2_per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2695 | } |
2696 | ||
d320c2b5 | 2697 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2698 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2699 | } |
2700 | ||
927aa2e7 JK |
2701 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2702 | populate the objfile's psymtabs_addrmap. */ | |
2703 | ||
2704 | static void | |
ed2dc618 | 2705 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2706 | struct dwarf2_section_info *section) |
2707 | { | |
ed2dc618 | 2708 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 | 2709 | bfd *abfd = objfile->obfd; |
08feed99 | 2710 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2711 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2712 | |
2713 | auto_obstack temp_obstack; | |
2714 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2715 | ||
2716 | std::unordered_map<sect_offset, | |
2717 | dwarf2_per_cu_data *, | |
2718 | gdb::hash_enum<sect_offset>> | |
2719 | debug_info_offset_to_per_cu; | |
5989a64e | 2720 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2721 | { |
927aa2e7 JK |
2722 | const auto insertpair |
2723 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2724 | if (!insertpair.second) | |
2725 | { | |
2726 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2727 | "debug_info_offset %s, ignoring .debug_aranges."), |
2728 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2729 | return; |
2730 | } | |
2731 | } | |
2732 | ||
96b79293 | 2733 | section->read (objfile); |
927aa2e7 JK |
2734 | |
2735 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2736 | ||
2737 | const gdb_byte *addr = section->buffer; | |
2738 | ||
2739 | while (addr < section->buffer + section->size) | |
2740 | { | |
2741 | const gdb_byte *const entry_addr = addr; | |
2742 | unsigned int bytes_read; | |
2743 | ||
2744 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2745 | &bytes_read); | |
2746 | addr += bytes_read; | |
2747 | ||
2748 | const gdb_byte *const entry_end = addr + entry_length; | |
2749 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2750 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2751 | if (addr + entry_length > section->buffer + section->size) | |
2752 | { | |
47e3f474 | 2753 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2754 | "length %s exceeds section length %s, " |
2755 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2756 | objfile_name (objfile), |
2757 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2758 | plongest (bytes_read + entry_length), |
2759 | pulongest (section->size)); | |
2760 | return; | |
2761 | } | |
2762 | ||
2763 | /* The version number. */ | |
2764 | const uint16_t version = read_2_bytes (abfd, addr); | |
2765 | addr += 2; | |
2766 | if (version != 2) | |
2767 | { | |
47e3f474 | 2768 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2769 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2770 | objfile_name (objfile), |
2771 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2772 | return; |
2773 | } | |
2774 | ||
2775 | const uint64_t debug_info_offset | |
2776 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2777 | addr += offset_size; | |
2778 | const auto per_cu_it | |
2779 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2780 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2781 | { | |
47e3f474 | 2782 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2783 | "debug_info_offset %s does not exists, " |
2784 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2785 | objfile_name (objfile), |
2786 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2787 | pulongest (debug_info_offset)); |
2788 | return; | |
2789 | } | |
2790 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2791 | ||
2792 | const uint8_t address_size = *addr++; | |
2793 | if (address_size < 1 || address_size > 8) | |
2794 | { | |
47e3f474 | 2795 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2796 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2797 | objfile_name (objfile), |
2798 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2799 | return; |
2800 | } | |
2801 | ||
2802 | const uint8_t segment_selector_size = *addr++; | |
2803 | if (segment_selector_size != 0) | |
2804 | { | |
47e3f474 | 2805 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2806 | "segment_selector_size %u is not supported, " |
2807 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2808 | objfile_name (objfile), |
2809 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2810 | segment_selector_size); |
2811 | return; | |
2812 | } | |
2813 | ||
2814 | /* Must pad to an alignment boundary that is twice the address | |
2815 | size. It is undocumented by the DWARF standard but GCC does | |
2816 | use it. */ | |
2817 | for (size_t padding = ((-(addr - section->buffer)) | |
2818 | & (2 * address_size - 1)); | |
2819 | padding > 0; padding--) | |
2820 | if (*addr++ != 0) | |
2821 | { | |
47e3f474 | 2822 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2823 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2824 | objfile_name (objfile), |
2825 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2826 | return; |
2827 | } | |
2828 | ||
2829 | for (;;) | |
2830 | { | |
2831 | if (addr + 2 * address_size > entry_end) | |
2832 | { | |
47e3f474 | 2833 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2834 | "address list is not properly terminated, " |
2835 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2836 | objfile_name (objfile), |
2837 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2838 | return; |
2839 | } | |
2840 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2841 | dwarf5_byte_order); | |
2842 | addr += address_size; | |
2843 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2844 | dwarf5_byte_order); | |
2845 | addr += address_size; | |
2846 | if (start == 0 && length == 0) | |
2847 | break; | |
5989a64e | 2848 | if (start == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2849 | { |
2850 | /* Symbol was eliminated due to a COMDAT group. */ | |
2851 | continue; | |
2852 | } | |
2853 | ULONGEST end = start + length; | |
79748972 TT |
2854 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2855 | - baseaddr); | |
2856 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2857 | - baseaddr); | |
927aa2e7 JK |
2858 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2859 | } | |
2860 | } | |
2861 | ||
d320c2b5 | 2862 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2863 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2864 | } |
2865 | ||
9291a0cd TT |
2866 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2867 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2868 | constant pool and return true. If NAME cannot be found, return |
2869 | false. */ | |
2fdf6df6 | 2870 | |
109483d9 | 2871 | static bool |
9291a0cd TT |
2872 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2873 | offset_type **vec_out) | |
2874 | { | |
0cf03b49 | 2875 | offset_type hash; |
9291a0cd | 2876 | offset_type slot, step; |
559a7a62 | 2877 | int (*cmp) (const char *, const char *); |
9291a0cd | 2878 | |
791afaa2 | 2879 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2880 | if (current_language->la_language == language_cplus |
45280282 IB |
2881 | || current_language->la_language == language_fortran |
2882 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2883 | { |
2884 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2885 | not contain any. */ | |
a8719064 | 2886 | |
72998fb3 | 2887 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2888 | { |
109483d9 | 2889 | without_params = cp_remove_params (name); |
0cf03b49 | 2890 | |
72998fb3 | 2891 | if (without_params != NULL) |
791afaa2 | 2892 | name = without_params.get (); |
0cf03b49 JK |
2893 | } |
2894 | } | |
2895 | ||
559a7a62 | 2896 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2897 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2898 | simulate our NAME being searched is also lowercased. */ |
2899 | hash = mapped_index_string_hash ((index->version == 4 | |
2900 | && case_sensitivity == case_sensitive_off | |
2901 | ? 5 : index->version), | |
2902 | name); | |
2903 | ||
f00a2de2 PA |
2904 | slot = hash & (index->symbol_table.size () - 1); |
2905 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2906 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2907 | |
2908 | for (;;) | |
2909 | { | |
9291a0cd | 2910 | const char *str; |
f00a2de2 PA |
2911 | |
2912 | const auto &bucket = index->symbol_table[slot]; | |
2913 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2914 | return false; |
9291a0cd | 2915 | |
f00a2de2 | 2916 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2917 | if (!cmp (name, str)) |
9291a0cd TT |
2918 | { |
2919 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2920 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2921 | return true; |
9291a0cd TT |
2922 | } |
2923 | ||
f00a2de2 | 2924 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2925 | } |
2926 | } | |
2927 | ||
4485a1c1 SM |
2928 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2929 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2930 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2931 | ok to use deprecated sections. |
2932 | ||
2933 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2934 | out parameters that are filled in with information about the CU and | |
2935 | TU lists in the section. | |
2936 | ||
4485a1c1 | 2937 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2938 | |
d33bc52e | 2939 | static bool |
3810f182 | 2940 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2941 | bool deprecated_ok, |
2942 | gdb::array_view<const gdb_byte> buffer, | |
2943 | struct mapped_index *map, | |
2944 | const gdb_byte **cu_list, | |
2945 | offset_type *cu_list_elements, | |
2946 | const gdb_byte **types_list, | |
2947 | offset_type *types_list_elements) | |
2948 | { | |
2949 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2950 | |
9291a0cd | 2951 | /* Version check. */ |
4485a1c1 | 2952 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2953 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2954 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2955 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2956 | indices. */ |
831adc1f | 2957 | if (version < 4) |
481860b3 GB |
2958 | { |
2959 | static int warning_printed = 0; | |
2960 | if (!warning_printed) | |
2961 | { | |
2962 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2963 | filename); |
481860b3 GB |
2964 | warning_printed = 1; |
2965 | } | |
2966 | return 0; | |
2967 | } | |
2968 | /* Index version 4 uses a different hash function than index version | |
2969 | 5 and later. | |
2970 | ||
2971 | Versions earlier than 6 did not emit psymbols for inlined | |
2972 | functions. Using these files will cause GDB not to be able to | |
2973 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2974 | indices unless the user has done |
2975 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2976 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2977 | { |
2978 | static int warning_printed = 0; | |
2979 | if (!warning_printed) | |
2980 | { | |
e615022a DE |
2981 | warning (_("\ |
2982 | Skipping deprecated .gdb_index section in %s.\n\ | |
2983 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2984 | to use the section anyway."), | |
2ec9a5e0 | 2985 | filename); |
481860b3 GB |
2986 | warning_printed = 1; |
2987 | } | |
2988 | return 0; | |
2989 | } | |
796a7ff8 | 2990 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2991 | of the TU (for symbols coming from TUs), |
2992 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2993 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2994 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2995 | These are just performance bugs, and we can't distinguish gdb-generated | |
2996 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2997 | |
481860b3 | 2998 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2999 | longer backward compatible. */ |
796a7ff8 | 3000 | if (version > 8) |
594e8718 | 3001 | return 0; |
9291a0cd | 3002 | |
559a7a62 | 3003 | map->version = version; |
9291a0cd | 3004 | |
4485a1c1 | 3005 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3006 | |
4485a1c1 | 3007 | int i = 0; |
2ec9a5e0 TT |
3008 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3009 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3010 | / 8); | |
1fd400ff TT |
3011 | ++i; |
3012 | ||
2ec9a5e0 TT |
3013 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3014 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3015 | - MAYBE_SWAP (metadata[i])) | |
3016 | / 8); | |
987d643c | 3017 | ++i; |
1fd400ff | 3018 | |
f00a2de2 PA |
3019 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3020 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3021 | map->address_table | |
3022 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3023 | ++i; |
3024 | ||
f00a2de2 PA |
3025 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3026 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3027 | map->symbol_table | |
3028 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3029 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3030 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3031 | |
f00a2de2 | 3032 | ++i; |
f9d83a0b | 3033 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3034 | |
2ec9a5e0 TT |
3035 | return 1; |
3036 | } | |
3037 | ||
4485a1c1 SM |
3038 | /* Callback types for dwarf2_read_gdb_index. */ |
3039 | ||
3040 | typedef gdb::function_view | |
5989a64e | 3041 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3042 | get_gdb_index_contents_ftype; |
3043 | typedef gdb::function_view | |
3044 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3045 | get_gdb_index_contents_dwz_ftype; | |
3046 | ||
927aa2e7 | 3047 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3048 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3049 | ||
3050 | static int | |
4485a1c1 SM |
3051 | dwarf2_read_gdb_index |
3052 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3053 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3054 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3055 | { |
2ec9a5e0 TT |
3056 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3057 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3058 | struct dwz_file *dwz; |
12359b5e | 3059 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3060 | |
4485a1c1 | 3061 | gdb::array_view<const gdb_byte> main_index_contents |
5989a64e | 3062 | = get_gdb_index_contents (objfile, dwarf2_per_objfile->per_bfd); |
4485a1c1 SM |
3063 | |
3064 | if (main_index_contents.empty ()) | |
3065 | return 0; | |
3066 | ||
3063847f | 3067 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3068 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3069 | use_deprecated_index_sections, |
3070 | main_index_contents, map.get (), &cu_list, | |
3071 | &cu_list_elements, &types_list, | |
3072 | &types_list_elements)) | |
2ec9a5e0 TT |
3073 | return 0; |
3074 | ||
0fefef59 | 3075 | /* Don't use the index if it's empty. */ |
3063847f | 3076 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3077 | return 0; |
3078 | ||
2ec9a5e0 TT |
3079 | /* If there is a .dwz file, read it so we can get its CU list as |
3080 | well. */ | |
c3699833 | 3081 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 3082 | if (dwz != NULL) |
2ec9a5e0 | 3083 | { |
2ec9a5e0 TT |
3084 | struct mapped_index dwz_map; |
3085 | const gdb_byte *dwz_types_ignore; | |
3086 | offset_type dwz_types_elements_ignore; | |
3087 | ||
4485a1c1 SM |
3088 | gdb::array_view<const gdb_byte> dwz_index_content |
3089 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3090 | ||
3091 | if (dwz_index_content.empty ()) | |
3092 | return 0; | |
3093 | ||
3810f182 | 3094 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3095 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3096 | &dwz_list, &dwz_list_elements, |
3097 | &dwz_types_ignore, | |
3098 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3099 | { |
3100 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3101 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3102 | return 0; |
3103 | } | |
3104 | } | |
3105 | ||
168c9250 | 3106 | create_cus_from_index (dwarf2_per_objfile->per_bfd, cu_list, cu_list_elements, |
12359b5e | 3107 | dwz_list, dwz_list_elements); |
1fd400ff | 3108 | |
8b70b953 TT |
3109 | if (types_list_elements) |
3110 | { | |
8b70b953 TT |
3111 | /* We can only handle a single .debug_types when we have an |
3112 | index. */ | |
5989a64e | 3113 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
8b70b953 TT |
3114 | return 0; |
3115 | ||
5989a64e | 3116 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
8b70b953 | 3117 | |
168c9250 SM |
3118 | create_signatured_type_table_from_index (dwarf2_per_objfile->per_bfd, |
3119 | section, types_list, | |
3120 | types_list_elements); | |
8b70b953 | 3121 | } |
9291a0cd | 3122 | |
3063847f | 3123 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3124 | |
5989a64e SM |
3125 | dwarf2_per_objfile->per_bfd->index_table = std::move (map); |
3126 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
3127 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
3128 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
9291a0cd TT |
3129 | |
3130 | return 1; | |
3131 | } | |
3132 | ||
dee91e82 | 3133 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3134 | |
dee91e82 DE |
3135 | static void |
3136 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3137 | const gdb_byte *info_ptr, |
3e225074 | 3138 | struct die_info *comp_unit_die) |
9291a0cd | 3139 | { |
dee91e82 | 3140 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3141 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
5e22e966 | 3142 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
094b34ac | 3143 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3144 | struct attribute *attr; |
7b9f3c50 DE |
3145 | void **slot; |
3146 | struct quick_file_names *qfn; | |
9291a0cd | 3147 | |
0186c6a7 DE |
3148 | gdb_assert (! this_cu->is_debug_types); |
3149 | ||
07261596 TT |
3150 | /* Our callers never want to match partial units -- instead they |
3151 | will match the enclosing full CU. */ | |
3152 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3153 | { | |
3154 | this_cu->v.quick->no_file_data = 1; | |
3155 | return; | |
3156 | } | |
3157 | ||
0186c6a7 | 3158 | lh_cu = this_cu; |
7b9f3c50 | 3159 | slot = NULL; |
dee91e82 | 3160 | |
fff8551c | 3161 | line_header_up lh; |
9c541725 | 3162 | sect_offset line_offset {}; |
fff8551c | 3163 | |
dee91e82 | 3164 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3165 | if (attr != nullptr) |
9291a0cd | 3166 | { |
7b9f3c50 DE |
3167 | struct quick_file_names find_entry; |
3168 | ||
9c541725 | 3169 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3170 | |
3171 | /* We may have already read in this line header (TU line header sharing). | |
3172 | If we have we're done. */ | |
094b34ac | 3173 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3174 | find_entry.hash.line_sect_off = line_offset; |
5989a64e | 3175 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3176 | &find_entry, INSERT); |
3177 | if (*slot != NULL) | |
3178 | { | |
9a3c8263 | 3179 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3180 | return; |
7b9f3c50 DE |
3181 | } |
3182 | ||
3019eac3 | 3183 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3184 | } |
3185 | if (lh == NULL) | |
3186 | { | |
094b34ac | 3187 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3188 | return; |
9291a0cd TT |
3189 | } |
3190 | ||
5989a64e | 3191 | qfn = XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3192 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3193 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3194 | gdb_assert (slot != NULL); |
3195 | *slot = qfn; | |
9291a0cd | 3196 | |
d721ba37 | 3197 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3198 | |
aa391654 TT |
3199 | int offset = 0; |
3200 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3201 | ++offset; | |
3202 | ||
7ba99d21 | 3203 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3204 | qfn->file_names = |
5989a64e | 3205 | XOBNEWVEC (&dwarf2_per_objfile->per_bfd->obstack, const char *, |
45940949 | 3206 | qfn->num_file_names); |
aa391654 TT |
3207 | if (offset != 0) |
3208 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3209 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3210 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3211 | fnd.comp_dir).release (); | |
7b9f3c50 | 3212 | qfn->real_names = NULL; |
9291a0cd | 3213 | |
094b34ac | 3214 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3215 | } |
3216 | ||
3217 | /* A helper for the "quick" functions which attempts to read the line | |
3218 | table for THIS_CU. */ | |
3219 | ||
3220 | static struct quick_file_names * | |
ab432490 SM |
3221 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3222 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3223 | { |
0186c6a7 DE |
3224 | /* This should never be called for TUs. */ |
3225 | gdb_assert (! this_cu->is_debug_types); | |
3226 | /* Nor type unit groups. */ | |
197400e8 | 3227 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3228 | |
dee91e82 DE |
3229 | if (this_cu->v.quick->file_names != NULL) |
3230 | return this_cu->v.quick->file_names; | |
3231 | /* If we know there is no line data, no point in looking again. */ | |
3232 | if (this_cu->v.quick->no_file_data) | |
3233 | return NULL; | |
3234 | ||
ab432490 | 3235 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3236 | if (!reader.dummy_p) |
3e225074 | 3237 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3238 | |
3239 | if (this_cu->v.quick->no_file_data) | |
3240 | return NULL; | |
3241 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3242 | } |
3243 | ||
3244 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3245 | real path for a given file name from the line table. */ |
2fdf6df6 | 3246 | |
9291a0cd | 3247 | static const char * |
45940949 | 3248 | dw2_get_real_path (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7b9f3c50 | 3249 | struct quick_file_names *qfn, int index) |
9291a0cd | 3250 | { |
7b9f3c50 | 3251 | if (qfn->real_names == NULL) |
5989a64e | 3252 | qfn->real_names = OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
26f2dc30 | 3253 | qfn->num_file_names, const char *); |
9291a0cd | 3254 | |
7b9f3c50 | 3255 | if (qfn->real_names[index] == NULL) |
14278e1f | 3256 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3257 | |
7b9f3c50 | 3258 | return qfn->real_names[index]; |
9291a0cd TT |
3259 | } |
3260 | ||
3261 | static struct symtab * | |
3262 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3263 | { | |
ed2dc618 SM |
3264 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3265 | = get_dwarf2_per_objfile (objfile); | |
5989a64e | 3266 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->per_bfd->all_comp_units.back (); |
97a1449a SM |
3267 | compunit_symtab *cust |
3268 | = dw2_instantiate_symtab (dwarf_cu, dwarf2_per_objfile, false); | |
ae2de4f8 | 3269 | |
43f3e411 DE |
3270 | if (cust == NULL) |
3271 | return NULL; | |
ed2dc618 | 3272 | |
43f3e411 | 3273 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3274 | } |
3275 | ||
7b9f3c50 DE |
3276 | /* Traversal function for dw2_forget_cached_source_info. */ |
3277 | ||
3278 | static int | |
3279 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3280 | { |
7b9f3c50 | 3281 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3282 | |
7b9f3c50 | 3283 | if (file_data->real_names) |
9291a0cd | 3284 | { |
7b9f3c50 | 3285 | int i; |
9291a0cd | 3286 | |
7b9f3c50 | 3287 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3288 | { |
7b9f3c50 DE |
3289 | xfree ((void*) file_data->real_names[i]); |
3290 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3291 | } |
3292 | } | |
7b9f3c50 DE |
3293 | |
3294 | return 1; | |
3295 | } | |
3296 | ||
3297 | static void | |
3298 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3299 | { | |
ed2dc618 SM |
3300 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3301 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3302 | |
5989a64e | 3303 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3304 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3305 | } |
3306 | ||
f8eba3c6 TT |
3307 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3308 | the symtabs and calls the iterator. */ | |
3309 | ||
3310 | static int | |
3311 | dw2_map_expand_apply (struct objfile *objfile, | |
3312 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3313 | const char *name, const char *real_path, |
14bc53a8 | 3314 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3315 | { |
43f3e411 | 3316 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3317 | |
3318 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3319 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3320 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3321 | return 0; |
3322 | ||
3323 | /* This may expand more than one symtab, and we want to iterate over | |
3324 | all of them. */ | |
97a1449a | 3325 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3326 | |
14bc53a8 PA |
3327 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3328 | last_made, callback); | |
f8eba3c6 TT |
3329 | } |
3330 | ||
3331 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3332 | ||
14bc53a8 PA |
3333 | static bool |
3334 | dw2_map_symtabs_matching_filename | |
3335 | (struct objfile *objfile, const char *name, const char *real_path, | |
3336 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3337 | { |
c011a4f4 | 3338 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3339 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3340 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3341 | |
848e3e78 DE |
3342 | /* The rule is CUs specify all the files, including those used by |
3343 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3344 | |
5989a64e | 3345 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3346 | { |
3d7bb9d9 | 3347 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3348 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3349 | continue; |
3350 | ||
ab432490 SM |
3351 | quick_file_names *file_data |
3352 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
7b9f3c50 | 3353 | if (file_data == NULL) |
9291a0cd TT |
3354 | continue; |
3355 | ||
b76e467d | 3356 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3357 | { |
7b9f3c50 | 3358 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3359 | const char *this_real_name; |
9291a0cd | 3360 | |
af529f8f | 3361 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3362 | { |
f5b95b50 | 3363 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3364 | callback)) |
3365 | return true; | |
288e77a7 | 3366 | continue; |
4aac40c8 | 3367 | } |
9291a0cd | 3368 | |
c011a4f4 DE |
3369 | /* Before we invoke realpath, which can get expensive when many |
3370 | files are involved, do a quick comparison of the basenames. */ | |
3371 | if (! basenames_may_differ | |
3372 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3373 | continue; | |
3374 | ||
45940949 TT |
3375 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
3376 | file_data, j); | |
da235a7c | 3377 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3378 | { |
da235a7c | 3379 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3380 | callback)) |
3381 | return true; | |
288e77a7 | 3382 | continue; |
da235a7c | 3383 | } |
9291a0cd | 3384 | |
da235a7c JK |
3385 | if (real_path != NULL) |
3386 | { | |
af529f8f JK |
3387 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3388 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3389 | if (this_real_name != NULL |
af529f8f | 3390 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3391 | { |
f5b95b50 | 3392 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3393 | callback)) |
3394 | return true; | |
288e77a7 | 3395 | continue; |
9291a0cd TT |
3396 | } |
3397 | } | |
3398 | } | |
3399 | } | |
3400 | ||
14bc53a8 | 3401 | return false; |
9291a0cd TT |
3402 | } |
3403 | ||
da51c347 DE |
3404 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3405 | ||
3406 | struct dw2_symtab_iterator | |
9291a0cd | 3407 | { |
ed2dc618 SM |
3408 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3409 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3410 | /* If set, only look for symbols that match that block. Valid values are |
3411 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3412 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3413 | /* The kind of symbol we're looking for. */ |
3414 | domain_enum domain; | |
3415 | /* The list of CUs from the index entry of the symbol, | |
3416 | or NULL if not found. */ | |
3417 | offset_type *vec; | |
3418 | /* The next element in VEC to look at. */ | |
3419 | int next; | |
3420 | /* The number of elements in VEC, or zero if there is no match. */ | |
3421 | int length; | |
8943b874 DE |
3422 | /* Have we seen a global version of the symbol? |
3423 | If so we can ignore all further global instances. | |
3424 | This is to work around gold/15646, inefficient gold-generated | |
3425 | indices. */ | |
3426 | int global_seen; | |
da51c347 | 3427 | }; |
9291a0cd | 3428 | |
2b79f376 | 3429 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3430 | |
9291a0cd | 3431 | static void |
da51c347 | 3432 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3433 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3434 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3435 | domain_enum domain, |
3436 | const char *name) | |
3437 | { | |
ed2dc618 | 3438 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3439 | iter->block_index = block_index; |
3440 | iter->domain = domain; | |
3441 | iter->next = 0; | |
8943b874 | 3442 | iter->global_seen = 0; |
da51c347 | 3443 | |
5989a64e | 3444 | mapped_index *index = dwarf2_per_objfile->per_bfd->index_table.get (); |
ed2dc618 SM |
3445 | |
3446 | /* index is NULL if OBJF_READNOW. */ | |
3447 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3448 | iter->length = MAYBE_SWAP (*iter->vec); |
3449 | else | |
3450 | { | |
3451 | iter->vec = NULL; | |
3452 | iter->length = 0; | |
3453 | } | |
3454 | } | |
3455 | ||
3456 | /* Return the next matching CU or NULL if there are no more. */ | |
3457 | ||
3458 | static struct dwarf2_per_cu_data * | |
3459 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3460 | { | |
ed2dc618 SM |
3461 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3462 | ||
da51c347 DE |
3463 | for ( ; iter->next < iter->length; ++iter->next) |
3464 | { | |
3465 | offset_type cu_index_and_attrs = | |
3466 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3467 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3468 | gdb_index_symbol_kind symbol_kind = |
3469 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3470 | /* Only check the symbol attributes if they're present. | |
3471 | Indices prior to version 7 don't record them, | |
3472 | and indices >= 7 may elide them for certain symbols | |
3473 | (gold does this). */ | |
3474 | int attrs_valid = | |
5989a64e | 3475 | (dwarf2_per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3476 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3477 | ||
3190f0c6 | 3478 | /* Don't crash on bad data. */ |
5989a64e SM |
3479 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3480 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3481 | { |
b98664d3 | 3482 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3483 | " [in module %s]"), |
3484 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3485 | continue; |
3486 | } | |
3487 | ||
5989a64e | 3488 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3489 | |
da51c347 | 3490 | /* Skip if already read in. */ |
af758d11 | 3491 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3492 | continue; |
3493 | ||
8943b874 DE |
3494 | /* Check static vs global. */ |
3495 | if (attrs_valid) | |
3496 | { | |
2b79f376 SM |
3497 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3498 | ||
3499 | if (iter->block_index.has_value ()) | |
3500 | { | |
3501 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3502 | ||
3503 | if (is_static != want_static) | |
3504 | continue; | |
3505 | } | |
3506 | ||
8943b874 DE |
3507 | /* Work around gold/15646. */ |
3508 | if (!is_static && iter->global_seen) | |
3509 | continue; | |
3510 | if (!is_static) | |
3511 | iter->global_seen = 1; | |
3512 | } | |
da51c347 DE |
3513 | |
3514 | /* Only check the symbol's kind if it has one. */ | |
3515 | if (attrs_valid) | |
3516 | { | |
3517 | switch (iter->domain) | |
3518 | { | |
3519 | case VAR_DOMAIN: | |
3520 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3521 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3522 | /* Some types are also in VAR_DOMAIN. */ | |
3523 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3524 | continue; | |
3525 | break; | |
3526 | case STRUCT_DOMAIN: | |
3527 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3528 | continue; | |
3529 | break; | |
3530 | case LABEL_DOMAIN: | |
3531 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3532 | continue; | |
3533 | break; | |
59c35742 AB |
3534 | case MODULE_DOMAIN: |
3535 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3536 | continue; | |
3537 | break; | |
da51c347 DE |
3538 | default: |
3539 | break; | |
3540 | } | |
3541 | } | |
3542 | ||
3543 | ++iter->next; | |
3544 | return per_cu; | |
3545 | } | |
3546 | ||
3547 | return NULL; | |
3548 | } | |
3549 | ||
43f3e411 | 3550 | static struct compunit_symtab * |
c7f839cb | 3551 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3552 | const char *name, domain_enum domain) |
9291a0cd | 3553 | { |
43f3e411 | 3554 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3555 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3556 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3557 | |
b5ec771e PA |
3558 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3559 | ||
ed2dc618 SM |
3560 | struct dw2_symtab_iterator iter; |
3561 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3562 | |
2b79f376 | 3563 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3564 | |
ed2dc618 SM |
3565 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3566 | { | |
3567 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
3568 | struct compunit_symtab *stab |
3569 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
ed2dc618 | 3570 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3571 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3572 | |
ed2dc618 SM |
3573 | sym = block_find_symbol (block, name, domain, |
3574 | block_find_non_opaque_type_preferred, | |
3575 | &with_opaque); | |
b2e2f908 | 3576 | |
ed2dc618 SM |
3577 | /* Some caution must be observed with overloaded functions |
3578 | and methods, since the index will not contain any overload | |
3579 | information (but NAME might contain it). */ | |
da51c347 | 3580 | |
ed2dc618 SM |
3581 | if (sym != NULL |
3582 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3583 | return stab; | |
3584 | if (with_opaque != NULL | |
3585 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3586 | stab_best = stab; | |
da51c347 | 3587 | |
ed2dc618 | 3588 | /* Keep looking through other CUs. */ |
9291a0cd | 3589 | } |
9291a0cd | 3590 | |
da51c347 | 3591 | return stab_best; |
9291a0cd TT |
3592 | } |
3593 | ||
3594 | static void | |
3595 | dw2_print_stats (struct objfile *objfile) | |
3596 | { | |
ed2dc618 SM |
3597 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3598 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3599 | int total = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3600 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3601 | int count = 0; |
9291a0cd | 3602 | |
ed2dc618 | 3603 | for (int i = 0; i < total; ++i) |
9291a0cd | 3604 | { |
5989a64e | 3605 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3606 | |
af758d11 | 3607 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3608 | ++count; |
3609 | } | |
e4a48d9d | 3610 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3611 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3612 | } | |
3613 | ||
779bd270 DE |
3614 | /* This dumps minimal information about the index. |
3615 | It is called via "mt print objfiles". | |
3616 | One use is to verify .gdb_index has been loaded by the | |
3617 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3618 | ||
9291a0cd TT |
3619 | static void |
3620 | dw2_dump (struct objfile *objfile) | |
3621 | { | |
ed2dc618 SM |
3622 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3623 | = get_dwarf2_per_objfile (objfile); | |
3624 | ||
5989a64e | 3625 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
779bd270 | 3626 | printf_filtered (".gdb_index:"); |
5989a64e | 3627 | if (dwarf2_per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3628 | { |
3629 | printf_filtered (" version %d\n", | |
5989a64e | 3630 | dwarf2_per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3631 | } |
3632 | else | |
3633 | printf_filtered (" faked for \"readnow\"\n"); | |
3634 | printf_filtered ("\n"); | |
9291a0cd TT |
3635 | } |
3636 | ||
9291a0cd TT |
3637 | static void |
3638 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3639 | const char *func_name) | |
3640 | { | |
ed2dc618 SM |
3641 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3642 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3643 | |
ed2dc618 SM |
3644 | struct dw2_symtab_iterator iter; |
3645 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3646 | |
2b79f376 | 3647 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3648 | |
ed2dc618 | 3649 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
97a1449a | 3650 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
da51c347 | 3651 | |
9291a0cd TT |
3652 | } |
3653 | ||
3654 | static void | |
3655 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3656 | { | |
ed2dc618 SM |
3657 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3658 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3659 | int total_units = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3660 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3661 | |
ed2dc618 | 3662 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3663 | { |
5989a64e | 3664 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3665 | |
58f0c718 TT |
3666 | /* We don't want to directly expand a partial CU, because if we |
3667 | read it with the wrong language, then assertion failures can | |
3668 | be triggered later on. See PR symtab/23010. So, tell | |
3669 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3670 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
97a1449a | 3671 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, true); |
9291a0cd TT |
3672 | } |
3673 | } | |
3674 | ||
3675 | static void | |
652a8996 JK |
3676 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3677 | const char *fullname) | |
9291a0cd | 3678 | { |
ed2dc618 SM |
3679 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3680 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3681 | |
3682 | /* We don't need to consider type units here. | |
3683 | This is only called for examining code, e.g. expand_line_sal. | |
3684 | There can be an order of magnitude (or more) more type units | |
3685 | than comp units, and we avoid them if we can. */ | |
3686 | ||
5989a64e | 3687 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3688 | { |
3d7bb9d9 | 3689 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3690 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3691 | continue; |
3692 | ||
ab432490 SM |
3693 | quick_file_names *file_data |
3694 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
7b9f3c50 | 3695 | if (file_data == NULL) |
9291a0cd TT |
3696 | continue; |
3697 | ||
b76e467d | 3698 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3699 | { |
652a8996 JK |
3700 | const char *this_fullname = file_data->file_names[j]; |
3701 | ||
3702 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3703 | { |
97a1449a | 3704 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
9291a0cd TT |
3705 | break; |
3706 | } | |
3707 | } | |
3708 | } | |
3709 | } | |
3710 | ||
9a0bacfb TV |
3711 | static void |
3712 | dw2_expand_symtabs_matching_symbol | |
3713 | (mapped_index_base &index, | |
3714 | const lookup_name_info &lookup_name_in, | |
3715 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3716 | enum search_domain kind, | |
3717 | gdb::function_view<bool (offset_type)> match_callback); | |
3718 | ||
3719 | static void | |
3720 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3721 | (dwarf2_per_cu_data *per_cu, |
3722 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3723 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3724 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3725 | ||
9291a0cd | 3726 | static void |
199b4314 TT |
3727 | dw2_map_matching_symbols |
3728 | (struct objfile *objfile, | |
b054970d | 3729 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3730 | int global, |
3731 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3732 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3733 | { |
1aa98955 TV |
3734 | /* Used for Ada. */ |
3735 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3736 | = get_dwarf2_per_objfile (objfile); | |
3737 | ||
9a0bacfb TV |
3738 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3739 | ||
5989a64e | 3740 | if (dwarf2_per_objfile->per_bfd->index_table != nullptr) |
1aa98955 TV |
3741 | { |
3742 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3743 | here though if the current language is Ada for a non-Ada objfile | |
9a0bacfb | 3744 | using GNU index. */ |
5989a64e | 3745 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
1aa98955 | 3746 | |
9a0bacfb TV |
3747 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3748 | auto matcher = [&] (const char *symname) | |
3749 | { | |
3750 | if (ordered_compare == nullptr) | |
3751 | return true; | |
3752 | return ordered_compare (symname, match_name) == 0; | |
3753 | }; | |
3754 | ||
3755 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3756 | [&] (offset_type namei) | |
3757 | { | |
3758 | struct dw2_symtab_iterator iter; | |
3759 | struct dwarf2_per_cu_data *per_cu; | |
3760 | ||
3761 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_kind, domain, | |
3762 | match_name); | |
3763 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
97a1449a SM |
3764 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
3765 | nullptr); | |
9a0bacfb TV |
3766 | return true; |
3767 | }); | |
3768 | } | |
3769 | else | |
3770 | { | |
3771 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3772 | proceed assuming all symtabs have been read in. */ | |
3773 | } | |
1aa98955 TV |
3774 | |
3775 | for (compunit_symtab *cust : objfile->compunits ()) | |
3776 | { | |
3777 | const struct block *block; | |
3778 | ||
3779 | if (cust == NULL) | |
3780 | continue; | |
3781 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3782 | if (!iterate_over_symbols_terminated (block, name, | |
3783 | domain, callback)) | |
3784 | return; | |
3785 | } | |
9291a0cd TT |
3786 | } |
3787 | ||
e1ef7d7a PA |
3788 | /* Starting from a search name, return the string that finds the upper |
3789 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3790 | list. Returns the empty string to indicate that the upper bound is | |
3791 | the end of the list. */ | |
3792 | ||
3793 | static std::string | |
3794 | make_sort_after_prefix_name (const char *search_name) | |
3795 | { | |
3796 | /* When looking to complete "func", we find the upper bound of all | |
3797 | symbols that start with "func" by looking for where we'd insert | |
3798 | the closest string that would follow "func" in lexicographical | |
3799 | order. Usually, that's "func"-with-last-character-incremented, | |
3800 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3801 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3802 | Especially mind the 0xff character, which is a valid character in | |
3803 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3804 | rule out compilers allowing it in identifiers. Note that | |
3805 | conveniently, strcmp/strcasecmp are specified to compare | |
3806 | characters interpreted as unsigned char. So what we do is treat | |
3807 | the whole string as a base 256 number composed of a sequence of | |
3808 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3809 | to 0, and carries 1 to the following more-significant position. | |
3810 | If the very first character in SEARCH_NAME ends up incremented | |
3811 | and carries/overflows, then the upper bound is the end of the | |
3812 | list. The string after the empty string is also the empty | |
3813 | string. | |
3814 | ||
3815 | Some examples of this operation: | |
3816 | ||
3817 | SEARCH_NAME => "+1" RESULT | |
3818 | ||
3819 | "abc" => "abd" | |
3820 | "ab\xff" => "ac" | |
3821 | "\xff" "a" "\xff" => "\xff" "b" | |
3822 | "\xff" => "" | |
3823 | "\xff\xff" => "" | |
3824 | "" => "" | |
3825 | ||
3826 | Then, with these symbols for example: | |
3827 | ||
3828 | func | |
3829 | func1 | |
3830 | fund | |
3831 | ||
3832 | completing "func" looks for symbols between "func" and | |
3833 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3834 | which finds "func" and "func1", but not "fund". | |
3835 | ||
3836 | And with: | |
3837 | ||
3838 | funcÿ (Latin1 'ÿ' [0xff]) | |
3839 | funcÿ1 | |
3840 | fund | |
3841 | ||
3842 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3843 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3844 | ||
3845 | And with: | |
3846 | ||
3847 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3848 | ÿÿ1 | |
3849 | ||
3850 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3851 | the end of the list. | |
3852 | */ | |
3853 | std::string after = search_name; | |
3854 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3855 | after.pop_back (); | |
3856 | if (!after.empty ()) | |
3857 | after.back () = (unsigned char) after.back () + 1; | |
3858 | return after; | |
3859 | } | |
3860 | ||
5c58de74 | 3861 | /* See declaration. */ |
61d96d7e | 3862 | |
5c58de74 PA |
3863 | std::pair<std::vector<name_component>::const_iterator, |
3864 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3865 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3866 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3867 | { |
5c58de74 PA |
3868 | auto *name_cmp |
3869 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3870 | |
3b00ef10 | 3871 | const char *lang_name |
e0802d59 | 3872 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3873 | |
3f563c84 PA |
3874 | /* Comparison function object for lower_bound that matches against a |
3875 | given symbol name. */ | |
3876 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3877 | const char *name) | |
3878 | { | |
5c58de74 | 3879 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3880 | const char *elem_name = elem_qualified + elem.name_offset; |
3881 | return name_cmp (elem_name, name) < 0; | |
3882 | }; | |
3883 | ||
3884 | /* Comparison function object for upper_bound that matches against a | |
3885 | given symbol name. */ | |
3886 | auto lookup_compare_upper = [&] (const char *name, | |
3887 | const name_component &elem) | |
3888 | { | |
5c58de74 | 3889 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3890 | const char *elem_name = elem_qualified + elem.name_offset; |
3891 | return name_cmp (name, elem_name) < 0; | |
3892 | }; | |
3893 | ||
5c58de74 PA |
3894 | auto begin = this->name_components.begin (); |
3895 | auto end = this->name_components.end (); | |
3f563c84 PA |
3896 | |
3897 | /* Find the lower bound. */ | |
3898 | auto lower = [&] () | |
3899 | { | |
3b00ef10 | 3900 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3901 | return begin; |
3902 | else | |
3b00ef10 | 3903 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3904 | } (); |
3905 | ||
3906 | /* Find the upper bound. */ | |
3907 | auto upper = [&] () | |
3908 | { | |
5c58de74 | 3909 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3910 | { |
e1ef7d7a PA |
3911 | /* In completion mode, we want UPPER to point past all |
3912 | symbols names that have the same prefix. I.e., with | |
3913 | these symbols, and completing "func": | |
3914 | ||
3915 | function << lower bound | |
3916 | function1 | |
3917 | other_function << upper bound | |
3918 | ||
3919 | We find the upper bound by looking for the insertion | |
3920 | point of "func"-with-last-character-incremented, | |
3921 | i.e. "fund". */ | |
3b00ef10 | 3922 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3923 | if (after.empty ()) |
3f563c84 | 3924 | return end; |
e6b2f5ef PA |
3925 | return std::lower_bound (lower, end, after.c_str (), |
3926 | lookup_compare_lower); | |
3f563c84 PA |
3927 | } |
3928 | else | |
3b00ef10 | 3929 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3930 | } (); |
3931 | ||
5c58de74 PA |
3932 | return {lower, upper}; |
3933 | } | |
3934 | ||
3935 | /* See declaration. */ | |
3936 | ||
3937 | void | |
44ed8f3e | 3938 | mapped_index_base::build_name_components () |
5c58de74 PA |
3939 | { |
3940 | if (!this->name_components.empty ()) | |
3941 | return; | |
3942 | ||
3943 | this->name_components_casing = case_sensitivity; | |
3944 | auto *name_cmp | |
3945 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3946 | ||
3947 | /* The code below only knows how to break apart components of C++ | |
3948 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3949 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3950 | auto count = this->symbol_name_count (); |
3951 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3952 | { |
44ed8f3e | 3953 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3954 | continue; |
3955 | ||
3956 | const char *name = this->symbol_name_at (idx); | |
3957 | ||
3958 | /* Add each name component to the name component table. */ | |
3959 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3960 | |
3961 | if (strstr (name, "::") != nullptr) | |
3962 | { | |
3963 | for (unsigned int current_len = cp_find_first_component (name); | |
3964 | name[current_len] != '\0'; | |
3965 | current_len += cp_find_first_component (name + current_len)) | |
3966 | { | |
3967 | gdb_assert (name[current_len] == ':'); | |
3968 | this->name_components.push_back ({previous_len, idx}); | |
3969 | /* Skip the '::'. */ | |
3970 | current_len += 2; | |
3971 | previous_len = current_len; | |
3972 | } | |
3973 | } | |
3974 | else | |
5c58de74 | 3975 | { |
3b00ef10 TT |
3976 | /* Handle the Ada encoded (aka mangled) form here. */ |
3977 | for (const char *iter = strstr (name, "__"); | |
3978 | iter != nullptr; | |
3979 | iter = strstr (iter, "__")) | |
3980 | { | |
3981 | this->name_components.push_back ({previous_len, idx}); | |
3982 | iter += 2; | |
3983 | previous_len = iter - name; | |
3984 | } | |
5c58de74 | 3985 | } |
3b00ef10 | 3986 | |
5c58de74 PA |
3987 | this->name_components.push_back ({previous_len, idx}); |
3988 | } | |
3989 | ||
3990 | /* Sort name_components elements by name. */ | |
3991 | auto name_comp_compare = [&] (const name_component &left, | |
3992 | const name_component &right) | |
3993 | { | |
3994 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3995 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3996 | ||
3997 | const char *left_name = left_qualified + left.name_offset; | |
3998 | const char *right_name = right_qualified + right.name_offset; | |
3999 | ||
4000 | return name_cmp (left_name, right_name) < 0; | |
4001 | }; | |
4002 | ||
4003 | std::sort (this->name_components.begin (), | |
4004 | this->name_components.end (), | |
4005 | name_comp_compare); | |
4006 | } | |
4007 | ||
4008 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4009 | mapped_index_base instead of the containing objfile. This is split |
4010 | to a separate function in order to be able to unit test the | |
4011 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4012 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4013 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4014 | |
4015 | static void | |
4016 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4017 | (mapped_index_base &index, |
5c58de74 PA |
4018 | const lookup_name_info &lookup_name_in, |
4019 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4020 | enum search_domain kind, | |
3b00ef10 | 4021 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4022 | { |
4023 | lookup_name_info lookup_name_without_params | |
4024 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4025 | |
4026 | /* Build the symbol name component sorted vector, if we haven't | |
4027 | yet. */ | |
4028 | index.build_name_components (); | |
4029 | ||
3f563c84 PA |
4030 | /* The same symbol may appear more than once in the range though. |
4031 | E.g., if we're looking for symbols that complete "w", and we have | |
4032 | a symbol named "w1::w2", we'll find the two name components for | |
4033 | that same symbol in the range. To be sure we only call the | |
4034 | callback once per symbol, we first collect the symbol name | |
4035 | indexes that matched in a temporary vector and ignore | |
4036 | duplicates. */ | |
4037 | std::vector<offset_type> matches; | |
3f563c84 | 4038 | |
3b00ef10 TT |
4039 | struct name_and_matcher |
4040 | { | |
4041 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4042 | const char *name; |
3b00ef10 TT |
4043 | |
4044 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4045 | { |
ecc6c606 | 4046 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4047 | } |
4048 | }; | |
4049 | ||
4050 | /* A vector holding all the different symbol name matchers, for all | |
4051 | languages. */ | |
4052 | std::vector<name_and_matcher> matchers; | |
4053 | ||
4054 | for (int i = 0; i < nr_languages; i++) | |
4055 | { | |
4056 | enum language lang_e = (enum language) i; | |
4057 | ||
4058 | const language_defn *lang = language_def (lang_e); | |
4059 | symbol_name_matcher_ftype *name_matcher | |
4060 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4061 | |
3b00ef10 TT |
4062 | name_and_matcher key { |
4063 | name_matcher, | |
4064 | lookup_name_without_params.language_lookup_name (lang_e) | |
4065 | }; | |
4066 | ||
4067 | /* Don't insert the same comparison routine more than once. | |
4068 | Note that we do this linear walk. This is not a problem in | |
4069 | practice because the number of supported languages is | |
4070 | low. */ | |
4071 | if (std::find (matchers.begin (), matchers.end (), key) | |
4072 | != matchers.end ()) | |
9291a0cd | 4073 | continue; |
3b00ef10 TT |
4074 | matchers.push_back (std::move (key)); |
4075 | ||
4076 | auto bounds | |
4077 | = index.find_name_components_bounds (lookup_name_without_params, | |
4078 | lang_e); | |
4079 | ||
4080 | /* Now for each symbol name in range, check to see if we have a name | |
4081 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4082 | ||
4083 | for (; bounds.first != bounds.second; ++bounds.first) | |
4084 | { | |
4085 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4086 | ||
4087 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4088 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4089 | continue; | |
9291a0cd | 4090 | |
3b00ef10 TT |
4091 | matches.push_back (bounds.first->idx); |
4092 | } | |
3f563c84 PA |
4093 | } |
4094 | ||
4095 | std::sort (matches.begin (), matches.end ()); | |
4096 | ||
4097 | /* Finally call the callback, once per match. */ | |
4098 | ULONGEST prev = -1; | |
4099 | for (offset_type idx : matches) | |
4100 | { | |
4101 | if (prev != idx) | |
4102 | { | |
3b00ef10 TT |
4103 | if (!match_callback (idx)) |
4104 | break; | |
3f563c84 PA |
4105 | prev = idx; |
4106 | } | |
4107 | } | |
4108 | ||
4109 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4110 | (offset_type)-1 are both possible values. */ | |
4111 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4112 | } | |
4113 | ||
c62446b1 PA |
4114 | #if GDB_SELF_TEST |
4115 | ||
4116 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4117 | ||
a3c5fafd PA |
4118 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4119 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4120 | mapped_index_base interface. Builds an index from the symbol list | |
4121 | passed as parameter to the constructor. */ | |
4122 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4123 | { |
4124 | public: | |
a3c5fafd PA |
4125 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4126 | : m_symbol_table (symbols) | |
c62446b1 PA |
4127 | {} |
4128 | ||
a3c5fafd | 4129 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4130 | |
a3c5fafd | 4131 | /* Return the number of names in the symbol table. */ |
632e107b | 4132 | size_t symbol_name_count () const override |
c62446b1 | 4133 | { |
a3c5fafd | 4134 | return m_symbol_table.size (); |
c62446b1 PA |
4135 | } |
4136 | ||
a3c5fafd | 4137 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4138 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4139 | { |
4140 | return m_symbol_table[idx]; | |
4141 | } | |
c62446b1 | 4142 | |
a3c5fafd PA |
4143 | private: |
4144 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4145 | }; |
4146 | ||
4147 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4148 | string, to pass to print routines. */ | |
4149 | ||
4150 | static const char * | |
4151 | string_or_null (const char *str) | |
4152 | { | |
4153 | return str != NULL ? str : "<null>"; | |
4154 | } | |
4155 | ||
4156 | /* Check if a lookup_name_info built from | |
4157 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4158 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4159 | matching order. If no match expected, then an empty list is | |
4160 | specified. Returns true on success. On failure prints a warning | |
4161 | indicating the file:line that failed, and returns false. */ | |
4162 | ||
4163 | static bool | |
4164 | check_match (const char *file, int line, | |
4165 | mock_mapped_index &mock_index, | |
4166 | const char *name, symbol_name_match_type match_type, | |
4167 | bool completion_mode, | |
4168 | std::initializer_list<const char *> expected_list) | |
4169 | { | |
4170 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4171 | ||
4172 | bool matched = true; | |
4173 | ||
4174 | auto mismatch = [&] (const char *expected_str, | |
4175 | const char *got) | |
4176 | { | |
4177 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4178 | "expected=\"%s\", got=\"%s\"\n"), | |
4179 | file, line, | |
4180 | (match_type == symbol_name_match_type::FULL | |
4181 | ? "FULL" : "WILD"), | |
4182 | name, string_or_null (expected_str), string_or_null (got)); | |
4183 | matched = false; | |
4184 | }; | |
4185 | ||
4186 | auto expected_it = expected_list.begin (); | |
4187 | auto expected_end = expected_list.end (); | |
4188 | ||
a3c5fafd | 4189 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4190 | NULL, ALL_DOMAIN, |
4191 | [&] (offset_type idx) | |
4192 | { | |
a3c5fafd | 4193 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4194 | const char *expected_str |
4195 | = expected_it == expected_end ? NULL : *expected_it++; | |
4196 | ||
4197 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4198 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4199 | return true; |
c62446b1 PA |
4200 | }); |
4201 | ||
4202 | const char *expected_str | |
4203 | = expected_it == expected_end ? NULL : *expected_it++; | |
4204 | if (expected_str != NULL) | |
4205 | mismatch (expected_str, NULL); | |
4206 | ||
4207 | return matched; | |
4208 | } | |
4209 | ||
4210 | /* The symbols added to the mock mapped_index for testing (in | |
4211 | canonical form). */ | |
4212 | static const char *test_symbols[] = { | |
4213 | "function", | |
4214 | "std::bar", | |
4215 | "std::zfunction", | |
4216 | "std::zfunction2", | |
4217 | "w1::w2", | |
4218 | "ns::foo<char*>", | |
4219 | "ns::foo<int>", | |
4220 | "ns::foo<long>", | |
a20714ff PA |
4221 | "ns2::tmpl<int>::foo2", |
4222 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4223 | |
e1ef7d7a PA |
4224 | /* These are used to check that the increment-last-char in the |
4225 | matching algorithm for completion doesn't match "t1_fund" when | |
4226 | completing "t1_func". */ | |
4227 | "t1_func", | |
4228 | "t1_func1", | |
4229 | "t1_fund", | |
4230 | "t1_fund1", | |
4231 | ||
4232 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4233 | cp-name-parser understands this as a single identifier ("função" | |
4234 | is "function" in PT). */ | |
4235 | u8"u8função", | |
4236 | ||
4237 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4238 | "yfunc\377", | |
4239 | ||
4240 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4241 | "\377", | |
4242 | "\377\377123", | |
4243 | ||
c62446b1 PA |
4244 | /* A name with all sorts of complications. Starts with "z" to make |
4245 | it easier for the completion tests below. */ | |
4246 | #define Z_SYM_NAME \ | |
4247 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4248 | "::tuple<(anonymous namespace)::ui*, " \ | |
4249 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4250 | ||
4251 | Z_SYM_NAME | |
4252 | }; | |
4253 | ||
a3c5fafd PA |
4254 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4255 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4256 | in completion mode. */ | |
5c58de74 PA |
4257 | |
4258 | static bool | |
a3c5fafd | 4259 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4260 | const char *search_name, |
4261 | gdb::array_view<const char *> expected_syms) | |
4262 | { | |
4263 | lookup_name_info lookup_name (search_name, | |
4264 | symbol_name_match_type::FULL, true); | |
4265 | ||
3b00ef10 TT |
4266 | auto bounds = index.find_name_components_bounds (lookup_name, |
4267 | language_cplus); | |
5c58de74 PA |
4268 | |
4269 | size_t distance = std::distance (bounds.first, bounds.second); | |
4270 | if (distance != expected_syms.size ()) | |
4271 | return false; | |
4272 | ||
4273 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4274 | { | |
4275 | auto nc_elem = bounds.first + exp_elem; | |
4276 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4277 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4278 | return false; | |
4279 | } | |
4280 | ||
4281 | return true; | |
4282 | } | |
4283 | ||
4284 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4285 | method. */ | |
4286 | ||
c62446b1 | 4287 | static void |
5c58de74 PA |
4288 | test_mapped_index_find_name_component_bounds () |
4289 | { | |
4290 | mock_mapped_index mock_index (test_symbols); | |
4291 | ||
a3c5fafd | 4292 | mock_index.build_name_components (); |
5c58de74 PA |
4293 | |
4294 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4295 | method in completion mode. */ | |
4296 | { | |
4297 | static const char *expected_syms[] = { | |
4298 | "t1_func", | |
4299 | "t1_func1", | |
5c58de74 PA |
4300 | }; |
4301 | ||
a3c5fafd | 4302 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4303 | "t1_func", expected_syms)); |
4304 | } | |
4305 | ||
4306 | /* Check that the increment-last-char in the name matching algorithm | |
4307 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4308 | { | |
4309 | static const char *expected_syms1[] = { | |
4310 | "\377", | |
4311 | "\377\377123", | |
4312 | }; | |
a3c5fafd | 4313 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4314 | "\377", expected_syms1)); |
4315 | ||
4316 | static const char *expected_syms2[] = { | |
4317 | "\377\377123", | |
4318 | }; | |
a3c5fafd | 4319 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4320 | "\377\377", expected_syms2)); |
4321 | } | |
4322 | } | |
4323 | ||
4324 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4325 | ||
4326 | static void | |
4327 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4328 | { |
4329 | mock_mapped_index mock_index (test_symbols); | |
4330 | ||
4331 | /* We let all tests run until the end even if some fails, for debug | |
4332 | convenience. */ | |
4333 | bool any_mismatch = false; | |
4334 | ||
4335 | /* Create the expected symbols list (an initializer_list). Needed | |
4336 | because lists have commas, and we need to pass them to CHECK, | |
4337 | which is a macro. */ | |
4338 | #define EXPECT(...) { __VA_ARGS__ } | |
4339 | ||
4340 | /* Wrapper for check_match that passes down the current | |
4341 | __FILE__/__LINE__. */ | |
4342 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4343 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4344 | mock_index, \ | |
4345 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4346 | EXPECTED_LIST) | |
4347 | ||
4348 | /* Identity checks. */ | |
4349 | for (const char *sym : test_symbols) | |
4350 | { | |
4351 | /* Should be able to match all existing symbols. */ | |
4352 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4353 | EXPECT (sym)); | |
4354 | ||
4355 | /* Should be able to match all existing symbols with | |
4356 | parameters. */ | |
4357 | std::string with_params = std::string (sym) + "(int)"; | |
4358 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4359 | EXPECT (sym)); | |
4360 | ||
4361 | /* Should be able to match all existing symbols with | |
4362 | parameters and qualifiers. */ | |
4363 | with_params = std::string (sym) + " ( int ) const"; | |
4364 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4365 | EXPECT (sym)); | |
4366 | ||
4367 | /* This should really find sym, but cp-name-parser.y doesn't | |
4368 | know about lvalue/rvalue qualifiers yet. */ | |
4369 | with_params = std::string (sym) + " ( int ) &&"; | |
4370 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4371 | {}); | |
4372 | } | |
4373 | ||
e1ef7d7a PA |
4374 | /* Check that the name matching algorithm for completion doesn't get |
4375 | confused with Latin1 'ÿ' / 0xff. */ | |
4376 | { | |
4377 | static const char str[] = "\377"; | |
4378 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4379 | EXPECT ("\377", "\377\377123")); | |
4380 | } | |
4381 | ||
4382 | /* Check that the increment-last-char in the matching algorithm for | |
4383 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4384 | { | |
4385 | static const char str[] = "t1_func"; | |
4386 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4387 | EXPECT ("t1_func", "t1_func1")); | |
4388 | } | |
4389 | ||
c62446b1 PA |
4390 | /* Check that completion mode works at each prefix of the expected |
4391 | symbol name. */ | |
4392 | { | |
4393 | static const char str[] = "function(int)"; | |
4394 | size_t len = strlen (str); | |
4395 | std::string lookup; | |
4396 | ||
4397 | for (size_t i = 1; i < len; i++) | |
4398 | { | |
4399 | lookup.assign (str, i); | |
4400 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4401 | EXPECT ("function")); | |
4402 | } | |
4403 | } | |
4404 | ||
4405 | /* While "w" is a prefix of both components, the match function | |
4406 | should still only be called once. */ | |
4407 | { | |
4408 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4409 | EXPECT ("w1::w2")); | |
a20714ff PA |
4410 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4411 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4412 | } |
4413 | ||
4414 | /* Same, with a "complicated" symbol. */ | |
4415 | { | |
4416 | static const char str[] = Z_SYM_NAME; | |
4417 | size_t len = strlen (str); | |
4418 | std::string lookup; | |
4419 | ||
4420 | for (size_t i = 1; i < len; i++) | |
4421 | { | |
4422 | lookup.assign (str, i); | |
4423 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4424 | EXPECT (Z_SYM_NAME)); | |
4425 | } | |
4426 | } | |
4427 | ||
4428 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4429 | { | |
4430 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4431 | {}); | |
4432 | } | |
4433 | ||
4434 | /* A complete symbol with parameters matches any overload, since the | |
4435 | index has no overload info. */ | |
4436 | { | |
4437 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4438 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4439 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4440 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4441 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4442 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4443 | } |
4444 | ||
4445 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4446 | template argument list. */ | |
4447 | { | |
4448 | static const char expected[] = "ns::foo<int>"; | |
4449 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4450 | EXPECT (expected)); | |
a20714ff PA |
4451 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4452 | EXPECT (expected)); | |
c62446b1 PA |
4453 | } |
4454 | ||
4455 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4456 | template argument list that includes a pointer. */ | |
4457 | { | |
4458 | static const char expected[] = "ns::foo<char*>"; | |
4459 | /* Try both completion and non-completion modes. */ | |
4460 | static const bool completion_mode[2] = {false, true}; | |
4461 | for (size_t i = 0; i < 2; i++) | |
4462 | { | |
4463 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4464 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4465 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4466 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4467 | |
4468 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4469 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4470 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4471 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4472 | } |
4473 | } | |
4474 | ||
4475 | { | |
4476 | /* Check method qualifiers are ignored. */ | |
4477 | static const char expected[] = "ns::foo<char*>"; | |
4478 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4479 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4480 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4481 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4482 | CHECK_MATCH ("foo < char * > ( int ) const", |
4483 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4484 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4485 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4486 | } |
4487 | ||
4488 | /* Test lookup names that don't match anything. */ | |
4489 | { | |
a20714ff PA |
4490 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4491 | {}); | |
4492 | ||
c62446b1 PA |
4493 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4494 | {}); | |
4495 | } | |
4496 | ||
a20714ff PA |
4497 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4498 | which should not be confused with a parameter list. */ | |
4499 | { | |
4500 | static const char *syms[] = { | |
4501 | "A::B::C", | |
4502 | "B::C", | |
4503 | "C", | |
4504 | "A :: B :: C ( int )", | |
4505 | "B :: C ( int )", | |
4506 | "C ( int )", | |
4507 | }; | |
4508 | ||
4509 | for (const char *s : syms) | |
4510 | { | |
4511 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4512 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4513 | } | |
4514 | } | |
4515 | ||
4516 | { | |
4517 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4518 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4519 | EXPECT (expected)); | |
4520 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4521 | EXPECT (expected)); | |
4522 | } | |
4523 | ||
c62446b1 PA |
4524 | SELF_CHECK (!any_mismatch); |
4525 | ||
4526 | #undef EXPECT | |
4527 | #undef CHECK_MATCH | |
4528 | } | |
4529 | ||
5c58de74 PA |
4530 | static void |
4531 | run_test () | |
4532 | { | |
4533 | test_mapped_index_find_name_component_bounds (); | |
4534 | test_dw2_expand_symtabs_matching_symbol (); | |
4535 | } | |
4536 | ||
c62446b1 PA |
4537 | }} // namespace selftests::dw2_expand_symtabs_matching |
4538 | ||
4539 | #endif /* GDB_SELF_TEST */ | |
4540 | ||
4b514bc8 JK |
4541 | /* If FILE_MATCHER is NULL or if PER_CU has |
4542 | dwarf2_per_cu_quick_data::MARK set (see | |
4543 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4544 | EXPANSION_NOTIFY on it. */ | |
4545 | ||
4546 | static void | |
4547 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4548 | (dwarf2_per_cu_data *per_cu, |
4549 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4550 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4551 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4552 | { | |
4553 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4554 | { | |
af758d11 | 4555 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4556 | |
97a1449a SM |
4557 | compunit_symtab *symtab |
4558 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4559 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4560 | |
af758d11 SM |
4561 | if (expansion_notify != NULL && symtab_was_null) |
4562 | expansion_notify (symtab); | |
4b514bc8 JK |
4563 | } |
4564 | } | |
4565 | ||
3f563c84 PA |
4566 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4567 | matched, to expand corresponding CUs that were marked. IDX is the | |
4568 | index of the symbol name that matched. */ | |
4569 | ||
4570 | static void | |
4571 | dw2_expand_marked_cus | |
97a1449a | 4572 | (dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4573 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4574 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4575 | search_domain kind) | |
4576 | { | |
3f563c84 PA |
4577 | offset_type *vec, vec_len, vec_idx; |
4578 | bool global_seen = false; | |
5989a64e | 4579 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
3f563c84 | 4580 | |
61920122 | 4581 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4582 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4583 | vec_len = MAYBE_SWAP (vec[0]); |
4584 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4585 | { | |
61920122 PA |
4586 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4587 | /* This value is only valid for index versions >= 7. */ | |
4588 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4589 | gdb_index_symbol_kind symbol_kind = | |
4590 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4591 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4592 | /* Only check the symbol attributes if they're present. | |
4593 | Indices prior to version 7 don't record them, | |
4594 | and indices >= 7 may elide them for certain symbols | |
4595 | (gold does this). */ | |
4596 | int attrs_valid = | |
4597 | (index.version >= 7 | |
4598 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4599 | ||
4600 | /* Work around gold/15646. */ | |
4601 | if (attrs_valid) | |
9291a0cd | 4602 | { |
61920122 PA |
4603 | if (!is_static && global_seen) |
4604 | continue; | |
4605 | if (!is_static) | |
4606 | global_seen = true; | |
4607 | } | |
3190f0c6 | 4608 | |
61920122 PA |
4609 | /* Only check the symbol's kind if it has one. */ |
4610 | if (attrs_valid) | |
4611 | { | |
4612 | switch (kind) | |
8943b874 | 4613 | { |
61920122 PA |
4614 | case VARIABLES_DOMAIN: |
4615 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4616 | continue; | |
4617 | break; | |
4618 | case FUNCTIONS_DOMAIN: | |
4619 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4620 | continue; |
61920122 PA |
4621 | break; |
4622 | case TYPES_DOMAIN: | |
4623 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4624 | continue; | |
4625 | break; | |
59c35742 AB |
4626 | case MODULES_DOMAIN: |
4627 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4628 | continue; | |
4629 | break; | |
61920122 PA |
4630 | default: |
4631 | break; | |
8943b874 | 4632 | } |
61920122 | 4633 | } |
8943b874 | 4634 | |
61920122 | 4635 | /* Don't crash on bad data. */ |
5989a64e SM |
4636 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
4637 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4638 | { |
b98664d3 | 4639 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4640 | " [in module %s]"), |
4641 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4642 | continue; |
4643 | } | |
4644 | ||
5989a64e | 4645 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
97a1449a | 4646 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, file_matcher, |
4b514bc8 | 4647 | expansion_notify); |
61920122 PA |
4648 | } |
4649 | } | |
4650 | ||
4b514bc8 JK |
4651 | /* If FILE_MATCHER is non-NULL, set all the |
4652 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4653 | that match FILE_MATCHER. */ | |
4654 | ||
61920122 | 4655 | static void |
4b514bc8 | 4656 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4657 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4658 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4659 | { |
4b514bc8 | 4660 | if (file_matcher == NULL) |
61920122 PA |
4661 | return; |
4662 | ||
4b514bc8 JK |
4663 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4664 | htab_eq_pointer, | |
4665 | NULL, xcalloc, xfree)); | |
4666 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4667 | htab_eq_pointer, |
4668 | NULL, xcalloc, xfree)); | |
61920122 | 4669 | |
4b514bc8 JK |
4670 | /* The rule is CUs specify all the files, including those used by |
4671 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4672 | |
5989a64e | 4673 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4674 | { |
927aa2e7 JK |
4675 | QUIT; |
4676 | ||
4677 | per_cu->v.quick->mark = 0; | |
4678 | ||
4679 | /* We only need to look at symtabs not already expanded. */ | |
af758d11 | 4680 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4681 | continue; |
4682 | ||
ab432490 SM |
4683 | quick_file_names *file_data |
4684 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
927aa2e7 JK |
4685 | if (file_data == NULL) |
4686 | continue; | |
4687 | ||
4688 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4689 | continue; | |
4690 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4691 | { | |
4692 | per_cu->v.quick->mark = 1; | |
4693 | continue; | |
4694 | } | |
4695 | ||
b76e467d | 4696 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4697 | { |
4698 | const char *this_real_name; | |
4699 | ||
4700 | if (file_matcher (file_data->file_names[j], false)) | |
4701 | { | |
4702 | per_cu->v.quick->mark = 1; | |
4703 | break; | |
4704 | } | |
4705 | ||
4706 | /* Before we invoke realpath, which can get expensive when many | |
4707 | files are involved, do a quick comparison of the basenames. */ | |
4708 | if (!basenames_may_differ | |
4709 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4710 | true)) | |
4711 | continue; | |
4712 | ||
45940949 TT |
4713 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
4714 | file_data, j); | |
927aa2e7 JK |
4715 | if (file_matcher (this_real_name, false)) |
4716 | { | |
4717 | per_cu->v.quick->mark = 1; | |
4718 | break; | |
4719 | } | |
4720 | } | |
4721 | ||
b76e467d SM |
4722 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4723 | ? visited_found.get () | |
4724 | : visited_not_found.get (), | |
4725 | file_data, INSERT); | |
927aa2e7 JK |
4726 | *slot = file_data; |
4727 | } | |
4728 | } | |
4729 | ||
4730 | static void | |
4731 | dw2_expand_symtabs_matching | |
4732 | (struct objfile *objfile, | |
4733 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4734 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4735 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4736 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4737 | enum search_domain kind) | |
4738 | { | |
ed2dc618 SM |
4739 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4740 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4741 | |
4742 | /* index_table is NULL if OBJF_READNOW. */ | |
5989a64e | 4743 | if (!dwarf2_per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4744 | return; |
4745 | ||
ed2dc618 | 4746 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 | 4747 | |
c1a66c06 TV |
4748 | if (symbol_matcher == NULL && lookup_name == NULL) |
4749 | { | |
5989a64e | 4750 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4751 | { |
4752 | QUIT; | |
4753 | ||
97a1449a SM |
4754 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
4755 | file_matcher, expansion_notify); | |
c1a66c06 TV |
4756 | } |
4757 | return; | |
4758 | } | |
4759 | ||
5989a64e | 4760 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
927aa2e7 | 4761 | |
c1a66c06 | 4762 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4763 | symbol_matcher, |
4764 | kind, [&] (offset_type idx) | |
4765 | { | |
ed2dc618 | 4766 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4767 | expansion_notify, kind); |
3b00ef10 | 4768 | return true; |
927aa2e7 JK |
4769 | }); |
4770 | } | |
4771 | ||
4772 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4773 | symtab. */ | |
4774 | ||
4775 | static struct compunit_symtab * | |
4776 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4777 | CORE_ADDR pc) | |
4778 | { | |
4779 | int i; | |
4780 | ||
4781 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4782 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4783 | return cust; | |
4784 | ||
4785 | if (cust->includes == NULL) | |
4786 | return NULL; | |
4787 | ||
4788 | for (i = 0; cust->includes[i]; ++i) | |
4789 | { | |
4790 | struct compunit_symtab *s = cust->includes[i]; | |
4791 | ||
4792 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4793 | if (s != NULL) | |
4794 | return s; | |
4795 | } | |
4796 | ||
4797 | return NULL; | |
4798 | } | |
4799 | ||
4800 | static struct compunit_symtab * | |
4801 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4802 | struct bound_minimal_symbol msymbol, | |
4803 | CORE_ADDR pc, | |
4804 | struct obj_section *section, | |
4805 | int warn_if_readin) | |
4806 | { | |
4807 | struct dwarf2_per_cu_data *data; | |
4808 | struct compunit_symtab *result; | |
4809 | ||
d320c2b5 | 4810 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4811 | return NULL; |
4812 | ||
b3b3bada | 4813 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4814 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4815 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4816 | if (!data) |
4817 | return NULL; | |
4818 | ||
af758d11 SM |
4819 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4820 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4821 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4822 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4823 | |
97a1449a SM |
4824 | result = recursively_find_pc_sect_compunit_symtab |
4825 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4826 | ||
927aa2e7 JK |
4827 | gdb_assert (result != NULL); |
4828 | return result; | |
4829 | } | |
4830 | ||
4831 | static void | |
4832 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4833 | void *data, int need_fullname) | |
4834 | { | |
ed2dc618 SM |
4835 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4836 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 | 4837 | |
5989a64e | 4838 | if (!dwarf2_per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4839 | { |
5989a64e | 4840 | dwarf2_per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4841 | |
4842 | htab_up visited (htab_create_alloc (10, | |
4843 | htab_hash_pointer, htab_eq_pointer, | |
4844 | NULL, xcalloc, xfree)); | |
4845 | ||
4846 | /* The rule is CUs specify all the files, including those used | |
4847 | by any TU, so there's no need to scan TUs here. We can | |
4848 | ignore file names coming from already-expanded CUs. */ | |
4849 | ||
5989a64e | 4850 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4851 | { |
af758d11 | 4852 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4853 | { |
4854 | void **slot = htab_find_slot (visited.get (), | |
4855 | per_cu->v.quick->file_names, | |
4856 | INSERT); | |
4857 | ||
4858 | *slot = per_cu->v.quick->file_names; | |
4859 | } | |
4860 | } | |
4861 | ||
5989a64e | 4862 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4863 | { |
927aa2e7 | 4864 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 4865 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4866 | continue; |
4867 | ||
ab432490 SM |
4868 | quick_file_names *file_data |
4869 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
927aa2e7 JK |
4870 | if (file_data == NULL) |
4871 | continue; | |
4872 | ||
b76e467d | 4873 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4874 | if (*slot) |
4875 | { | |
4876 | /* Already visited. */ | |
4877 | continue; | |
4878 | } | |
4879 | *slot = file_data; | |
4880 | ||
4881 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4882 | { | |
4883 | const char *filename = file_data->file_names[j]; | |
5989a64e | 4884 | dwarf2_per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4885 | } |
4886 | } | |
4887 | } | |
4888 | ||
5989a64e | 4889 | dwarf2_per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4890 | { |
4891 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4892 | ||
4893 | if (need_fullname) | |
4894 | this_real_name = gdb_realpath (filename); | |
4895 | (*fun) (filename, this_real_name.get (), data); | |
4896 | }); | |
4897 | } | |
4898 | ||
4899 | static int | |
4900 | dw2_has_symbols (struct objfile *objfile) | |
4901 | { | |
4902 | return 1; | |
4903 | } | |
4904 | ||
4905 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4906 | { | |
4907 | dw2_has_symbols, | |
4908 | dw2_find_last_source_symtab, | |
4909 | dw2_forget_cached_source_info, | |
4910 | dw2_map_symtabs_matching_filename, | |
4911 | dw2_lookup_symbol, | |
d3214198 | 4912 | NULL, |
927aa2e7 JK |
4913 | dw2_print_stats, |
4914 | dw2_dump, | |
927aa2e7 JK |
4915 | dw2_expand_symtabs_for_function, |
4916 | dw2_expand_all_symtabs, | |
4917 | dw2_expand_symtabs_with_fullname, | |
4918 | dw2_map_matching_symbols, | |
4919 | dw2_expand_symtabs_matching, | |
4920 | dw2_find_pc_sect_compunit_symtab, | |
4921 | NULL, | |
4922 | dw2_map_symbol_filenames | |
4923 | }; | |
4924 | ||
4925 | /* DWARF-5 debug_names reader. */ | |
4926 | ||
4927 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4928 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4929 | ||
4930 | /* A helper function that reads the .debug_names section in SECTION | |
4931 | and fills in MAP. FILENAME is the name of the file containing the | |
4932 | section; it is used for error reporting. | |
4933 | ||
4934 | Returns true if all went well, false otherwise. */ | |
4935 | ||
4936 | static bool | |
4937 | read_debug_names_from_section (struct objfile *objfile, | |
4938 | const char *filename, | |
4939 | struct dwarf2_section_info *section, | |
4940 | mapped_debug_names &map) | |
4941 | { | |
96b79293 | 4942 | if (section->empty ()) |
927aa2e7 JK |
4943 | return false; |
4944 | ||
4945 | /* Older elfutils strip versions could keep the section in the main | |
4946 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4947 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4948 | return false; |
4949 | ||
96b79293 | 4950 | section->read (objfile); |
927aa2e7 | 4951 | |
08feed99 | 4952 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4953 | |
4954 | const gdb_byte *addr = section->buffer; | |
4955 | ||
96b79293 | 4956 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4957 | |
4958 | unsigned int bytes_read; | |
4959 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4960 | addr += bytes_read; | |
4961 | ||
4962 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4963 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4964 | if (bytes_read + length != section->size) | |
4965 | { | |
4966 | /* There may be multiple per-CU indices. */ | |
4967 | warning (_("Section .debug_names in %s length %s does not match " | |
4968 | "section length %s, ignoring .debug_names."), | |
4969 | filename, plongest (bytes_read + length), | |
4970 | pulongest (section->size)); | |
4971 | return false; | |
4972 | } | |
4973 | ||
4974 | /* The version number. */ | |
4975 | uint16_t version = read_2_bytes (abfd, addr); | |
4976 | addr += 2; | |
4977 | if (version != 5) | |
4978 | { | |
4979 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4980 | "ignoring .debug_names."), | |
4981 | filename, version); | |
4982 | return false; | |
4983 | } | |
4984 | ||
4985 | /* Padding. */ | |
4986 | uint16_t padding = read_2_bytes (abfd, addr); | |
4987 | addr += 2; | |
4988 | if (padding != 0) | |
4989 | { | |
4990 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4991 | "ignoring .debug_names."), | |
4992 | filename, padding); | |
4993 | return false; | |
4994 | } | |
4995 | ||
4996 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4997 | map.cu_count = read_4_bytes (abfd, addr); | |
4998 | addr += 4; | |
4999 | ||
5000 | /* local_type_unit_count - The number of TUs in the local TU | |
5001 | list. */ | |
5002 | map.tu_count = read_4_bytes (abfd, addr); | |
5003 | addr += 4; | |
5004 | ||
5005 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5006 | list. */ | |
5007 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5008 | addr += 4; | |
5009 | if (foreign_tu_count != 0) | |
5010 | { | |
5011 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5012 | "ignoring .debug_names."), | |
5013 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5014 | return false; | |
5015 | } | |
5016 | ||
5017 | /* bucket_count - The number of hash buckets in the hash lookup | |
5018 | table. */ | |
5019 | map.bucket_count = read_4_bytes (abfd, addr); | |
5020 | addr += 4; | |
5021 | ||
5022 | /* name_count - The number of unique names in the index. */ | |
5023 | map.name_count = read_4_bytes (abfd, addr); | |
5024 | addr += 4; | |
5025 | ||
5026 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5027 | table. */ | |
5028 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5029 | addr += 4; | |
5030 | ||
5031 | /* augmentation_string_size - The size in bytes of the augmentation | |
5032 | string. This value is rounded up to a multiple of 4. */ | |
5033 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5034 | addr += 4; | |
5035 | map.augmentation_is_gdb = ((augmentation_string_size | |
5036 | == sizeof (dwarf5_augmentation)) | |
5037 | && memcmp (addr, dwarf5_augmentation, | |
5038 | sizeof (dwarf5_augmentation)) == 0); | |
5039 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5040 | addr += augmentation_string_size; | |
5041 | ||
5042 | /* List of CUs */ | |
5043 | map.cu_table_reordered = addr; | |
5044 | addr += map.cu_count * map.offset_size; | |
5045 | ||
5046 | /* List of Local TUs */ | |
5047 | map.tu_table_reordered = addr; | |
5048 | addr += map.tu_count * map.offset_size; | |
5049 | ||
5050 | /* Hash Lookup Table */ | |
5051 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5052 | addr += map.bucket_count * 4; | |
5053 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5054 | addr += map.name_count * 4; | |
5055 | ||
5056 | /* Name Table */ | |
5057 | map.name_table_string_offs_reordered = addr; | |
5058 | addr += map.name_count * map.offset_size; | |
5059 | map.name_table_entry_offs_reordered = addr; | |
5060 | addr += map.name_count * map.offset_size; | |
5061 | ||
5062 | const gdb_byte *abbrev_table_start = addr; | |
5063 | for (;;) | |
5064 | { | |
927aa2e7 JK |
5065 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5066 | addr += bytes_read; | |
5067 | if (index_num == 0) | |
5068 | break; | |
5069 | ||
5070 | const auto insertpair | |
5071 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5072 | if (!insertpair.second) | |
5073 | { | |
5074 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5075 | "ignoring .debug_names."), | |
5076 | filename, pulongest (index_num)); | |
5077 | return false; | |
5078 | } | |
5079 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5080 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5081 | addr += bytes_read; | |
5082 | ||
5083 | for (;;) | |
5084 | { | |
5085 | mapped_debug_names::index_val::attr attr; | |
5086 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5087 | addr += bytes_read; | |
5088 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5089 | addr += bytes_read; | |
5090 | if (attr.form == DW_FORM_implicit_const) | |
5091 | { | |
5092 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5093 | &bytes_read); | |
5094 | addr += bytes_read; | |
5095 | } | |
5096 | if (attr.dw_idx == 0 && attr.form == 0) | |
5097 | break; | |
5098 | indexval.attr_vec.push_back (std::move (attr)); | |
5099 | } | |
5100 | } | |
5101 | if (addr != abbrev_table_start + abbrev_table_size) | |
5102 | { | |
5103 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5104 | "of size %s vs. written as %u, ignoring .debug_names."), |
5105 | filename, plongest (addr - abbrev_table_start), | |
5106 | abbrev_table_size); | |
927aa2e7 JK |
5107 | return false; |
5108 | } | |
5109 | map.entry_pool = addr; | |
5110 | ||
5111 | return true; | |
5112 | } | |
5113 | ||
5114 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5115 | list. */ | |
5116 | ||
5117 | static void | |
168c9250 | 5118 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5119 | const mapped_debug_names &map, |
5120 | dwarf2_section_info §ion, | |
b76e467d | 5121 | bool is_dwz) |
927aa2e7 | 5122 | { |
3ee6bb11 TV |
5123 | if (!map.augmentation_is_gdb) |
5124 | { | |
5125 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5126 | { | |
5127 | sect_offset sect_off | |
5128 | = (sect_offset) (extract_unsigned_integer | |
5129 | (map.cu_table_reordered + i * map.offset_size, | |
5130 | map.offset_size, | |
5131 | map.dwarf5_byte_order)); | |
5132 | /* We don't know the length of the CU, because the CU list in a | |
5133 | .debug_names index can be incomplete, so we can't use the start of | |
5134 | the next CU as end of this CU. We create the CUs here with length 0, | |
5135 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5136 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5137 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5138 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5139 | } |
5140 | } | |
5141 | ||
927aa2e7 JK |
5142 | sect_offset sect_off_prev; |
5143 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5144 | { | |
5145 | sect_offset sect_off_next; | |
5146 | if (i < map.cu_count) | |
5147 | { | |
5148 | sect_off_next | |
5149 | = (sect_offset) (extract_unsigned_integer | |
5150 | (map.cu_table_reordered + i * map.offset_size, | |
5151 | map.offset_size, | |
5152 | map.dwarf5_byte_order)); | |
5153 | } | |
5154 | else | |
5155 | sect_off_next = (sect_offset) section.size; | |
5156 | if (i >= 1) | |
5157 | { | |
5158 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5159 | dwarf2_per_cu_data *per_cu |
168c9250 | 5160 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5161 | sect_off_prev, length); |
168c9250 | 5162 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5163 | } |
5164 | sect_off_prev = sect_off_next; | |
5165 | } | |
5166 | } | |
5167 | ||
5168 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5169 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5170 | |
5171 | static void | |
168c9250 | 5172 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5173 | const mapped_debug_names &map, |
5174 | const mapped_debug_names &dwz_map) | |
5175 | { | |
168c9250 SM |
5176 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5177 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5178 | |
168c9250 | 5179 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5180 | false /* is_dwz */); |
927aa2e7 JK |
5181 | |
5182 | if (dwz_map.cu_count == 0) | |
5183 | return; | |
5184 | ||
168c9250 SM |
5185 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5186 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5187 | true /* is_dwz */); |
927aa2e7 JK |
5188 | } |
5189 | ||
5190 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5191 | elements of all the CUs and return true. Otherwise, return false. */ | |
5192 | ||
5193 | static bool | |
ed2dc618 | 5194 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5195 | { |
22ca247e TT |
5196 | std::unique_ptr<mapped_debug_names> map |
5197 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5198 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5199 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5200 | |
5201 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5989a64e | 5202 | &dwarf2_per_objfile->per_bfd->debug_names, |
22ca247e | 5203 | *map)) |
927aa2e7 JK |
5204 | return false; |
5205 | ||
5206 | /* Don't use the index if it's empty. */ | |
22ca247e | 5207 | if (map->name_count == 0) |
927aa2e7 JK |
5208 | return false; |
5209 | ||
5210 | /* If there is a .dwz file, read it so we can get its CU list as | |
5211 | well. */ | |
c3699833 | 5212 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
927aa2e7 JK |
5213 | if (dwz != NULL) |
5214 | { | |
5215 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5216 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5217 | &dwz->debug_names, dwz_map)) |
5218 | { | |
5219 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5220 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5221 | return false; |
5222 | } | |
5223 | } | |
5224 | ||
168c9250 | 5225 | create_cus_from_debug_names (dwarf2_per_objfile->per_bfd, *map, dwz_map); |
927aa2e7 | 5226 | |
22ca247e | 5227 | if (map->tu_count != 0) |
927aa2e7 JK |
5228 | { |
5229 | /* We can only handle a single .debug_types when we have an | |
5230 | index. */ | |
5989a64e | 5231 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
927aa2e7 JK |
5232 | return false; |
5233 | ||
5989a64e | 5234 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
927aa2e7 JK |
5235 | |
5236 | create_signatured_type_table_from_debug_names | |
5989a64e | 5237 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->per_bfd->abbrev); |
927aa2e7 JK |
5238 | } |
5239 | ||
ed2dc618 | 5240 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5989a64e | 5241 | &dwarf2_per_objfile->per_bfd->debug_aranges); |
927aa2e7 | 5242 | |
5989a64e SM |
5243 | dwarf2_per_objfile->per_bfd->debug_names_table = std::move (map); |
5244 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
5245 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
5246 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
927aa2e7 JK |
5247 | |
5248 | return true; | |
5249 | } | |
5250 | ||
927aa2e7 JK |
5251 | /* Type used to manage iterating over all CUs looking for a symbol for |
5252 | .debug_names. */ | |
5253 | ||
5254 | class dw2_debug_names_iterator | |
5255 | { | |
5256 | public: | |
927aa2e7 | 5257 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5258 | gdb::optional<block_enum> block_index, |
5259 | domain_enum domain, | |
927aa2e7 | 5260 | const char *name) |
2b79f376 | 5261 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5262 | m_addr (find_vec_in_debug_names (map, name)) |
5263 | {} | |
5264 | ||
5265 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5266 | search_domain search, uint32_t namei) | |
5267 | : m_map (map), | |
5268 | m_search (search), | |
5269 | m_addr (find_vec_in_debug_names (map, namei)) | |
5270 | {} | |
5271 | ||
3b00ef10 TT |
5272 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5273 | block_enum block_index, domain_enum domain, | |
5274 | uint32_t namei) | |
5275 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5276 | m_addr (find_vec_in_debug_names (map, namei)) | |
5277 | {} | |
5278 | ||
927aa2e7 JK |
5279 | /* Return the next matching CU or NULL if there are no more. */ |
5280 | dwarf2_per_cu_data *next (); | |
5281 | ||
5282 | private: | |
5283 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5284 | const char *name); | |
5285 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5286 | uint32_t namei); | |
5287 | ||
5288 | /* The internalized form of .debug_names. */ | |
5289 | const mapped_debug_names &m_map; | |
5290 | ||
2b79f376 SM |
5291 | /* If set, only look for symbols that match that block. Valid values are |
5292 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5293 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5294 | |
5295 | /* The kind of symbol we're looking for. */ | |
5296 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5297 | const search_domain m_search = ALL_DOMAIN; | |
5298 | ||
5299 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5300 | not found. */ | |
5301 | const gdb_byte *m_addr; | |
5302 | }; | |
5303 | ||
5304 | const char * | |
5305 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5306 | { | |
5307 | const ULONGEST namei_string_offs | |
5308 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5309 | + namei * offset_size), | |
5310 | offset_size, | |
5311 | dwarf5_byte_order); | |
4f44ae6c TT |
5312 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5313 | namei_string_offs); | |
927aa2e7 JK |
5314 | } |
5315 | ||
5316 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5317 | found, return pointer to its pool data. If NAME cannot be found, | |
5318 | return NULL. */ | |
5319 | ||
5320 | const gdb_byte * | |
5321 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5322 | (const mapped_debug_names &map, const char *name) | |
5323 | { | |
5324 | int (*cmp) (const char *, const char *); | |
5325 | ||
54ee4252 | 5326 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5327 | if (current_language->la_language == language_cplus |
5328 | || current_language->la_language == language_fortran | |
5329 | || current_language->la_language == language_d) | |
5330 | { | |
5331 | /* NAME is already canonical. Drop any qualifiers as | |
5332 | .debug_names does not contain any. */ | |
5333 | ||
5334 | if (strchr (name, '(') != NULL) | |
5335 | { | |
54ee4252 | 5336 | without_params = cp_remove_params (name); |
927aa2e7 | 5337 | if (without_params != NULL) |
54ee4252 | 5338 | name = without_params.get (); |
927aa2e7 JK |
5339 | } |
5340 | } | |
5341 | ||
5342 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5343 | ||
5344 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5345 | uint32_t namei | |
5346 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5347 | (map.bucket_table_reordered | |
5348 | + (full_hash % map.bucket_count)), 4, | |
5349 | map.dwarf5_byte_order); | |
5350 | if (namei == 0) | |
5351 | return NULL; | |
5352 | --namei; | |
5353 | if (namei >= map.name_count) | |
5354 | { | |
b98664d3 | 5355 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5356 | "[in module %s]"), |
5357 | namei, map.name_count, | |
ed2dc618 | 5358 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5359 | return NULL; |
5360 | } | |
5361 | ||
5362 | for (;;) | |
5363 | { | |
5364 | const uint32_t namei_full_hash | |
5365 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5366 | (map.hash_table_reordered + namei), 4, | |
5367 | map.dwarf5_byte_order); | |
5368 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5369 | return NULL; | |
5370 | ||
5371 | if (full_hash == namei_full_hash) | |
5372 | { | |
5373 | const char *const namei_string = map.namei_to_name (namei); | |
5374 | ||
5375 | #if 0 /* An expensive sanity check. */ | |
5376 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5377 | { | |
b98664d3 | 5378 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5379 | "[in module %s]"), |
5380 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5381 | return NULL; | |
5382 | } | |
5383 | #endif | |
5384 | ||
5385 | if (cmp (namei_string, name) == 0) | |
5386 | { | |
5387 | const ULONGEST namei_entry_offs | |
5388 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5389 | + namei * map.offset_size), | |
5390 | map.offset_size, map.dwarf5_byte_order); | |
5391 | return map.entry_pool + namei_entry_offs; | |
5392 | } | |
5393 | } | |
5394 | ||
5395 | ++namei; | |
5396 | if (namei >= map.name_count) | |
5397 | return NULL; | |
5398 | } | |
5399 | } | |
5400 | ||
5401 | const gdb_byte * | |
5402 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5403 | (const mapped_debug_names &map, uint32_t namei) | |
5404 | { | |
5405 | if (namei >= map.name_count) | |
5406 | { | |
b98664d3 | 5407 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5408 | "[in module %s]"), |
5409 | namei, map.name_count, | |
ed2dc618 | 5410 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5411 | return NULL; |
5412 | } | |
5413 | ||
5414 | const ULONGEST namei_entry_offs | |
5415 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5416 | + namei * map.offset_size), | |
5417 | map.offset_size, map.dwarf5_byte_order); | |
5418 | return map.entry_pool + namei_entry_offs; | |
5419 | } | |
5420 | ||
5421 | /* See dw2_debug_names_iterator. */ | |
5422 | ||
5423 | dwarf2_per_cu_data * | |
5424 | dw2_debug_names_iterator::next () | |
5425 | { | |
5426 | if (m_addr == NULL) | |
5427 | return NULL; | |
5428 | ||
ed2dc618 SM |
5429 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5430 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5431 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5432 | |
5433 | again: | |
5434 | ||
5435 | unsigned int bytes_read; | |
5436 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5437 | m_addr += bytes_read; | |
5438 | if (abbrev == 0) | |
5439 | return NULL; | |
5440 | ||
5441 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5442 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5443 | { | |
b98664d3 | 5444 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5445 | "[in module %s]"), |
ed2dc618 | 5446 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5447 | return NULL; |
5448 | } | |
5449 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5450 | enum class symbol_linkage { |
5451 | unknown, | |
5452 | static_, | |
5453 | extern_, | |
23c13d42 | 5454 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5455 | dwarf2_per_cu_data *per_cu = NULL; |
5456 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5457 | { | |
5458 | ULONGEST ull; | |
5459 | switch (attr.form) | |
5460 | { | |
5461 | case DW_FORM_implicit_const: | |
5462 | ull = attr.implicit_const; | |
5463 | break; | |
5464 | case DW_FORM_flag_present: | |
5465 | ull = 1; | |
5466 | break; | |
5467 | case DW_FORM_udata: | |
5468 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5469 | m_addr += bytes_read; | |
5470 | break; | |
6dc55ce9 | 5471 | case DW_FORM_ref4: |
5472 | ull = read_4_bytes (abfd, m_addr); | |
5473 | m_addr += 4; | |
5474 | break; | |
5475 | case DW_FORM_ref8: | |
5476 | ull = read_8_bytes (abfd, m_addr); | |
5477 | m_addr += 8; | |
5478 | break; | |
5479 | case DW_FORM_ref_sig8: | |
5480 | ull = read_8_bytes (abfd, m_addr); | |
5481 | m_addr += 8; | |
5482 | break; | |
927aa2e7 | 5483 | default: |
b98664d3 | 5484 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5485 | dwarf_form_name (attr.form), |
ed2dc618 | 5486 | objfile_name (objfile)); |
927aa2e7 JK |
5487 | return NULL; |
5488 | } | |
5489 | switch (attr.dw_idx) | |
5490 | { | |
5491 | case DW_IDX_compile_unit: | |
5492 | /* Don't crash on bad data. */ | |
5989a64e | 5493 | if (ull >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5494 | { |
b98664d3 | 5495 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5496 | " [in module %s]"), |
5497 | pulongest (ull), | |
5498 | objfile_name (dwarf2_per_objfile->objfile)); | |
5499 | continue; | |
5500 | } | |
5989a64e | 5501 | per_cu = dwarf2_per_objfile->per_bfd->get_cutu (ull); |
927aa2e7 | 5502 | break; |
8af5c486 JK |
5503 | case DW_IDX_type_unit: |
5504 | /* Don't crash on bad data. */ | |
5989a64e | 5505 | if (ull >= dwarf2_per_objfile->per_bfd->all_type_units.size ()) |
8af5c486 | 5506 | { |
b98664d3 | 5507 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5508 | " [in module %s]"), |
5509 | pulongest (ull), | |
5510 | objfile_name (dwarf2_per_objfile->objfile)); | |
5511 | continue; | |
5512 | } | |
5989a64e | 5513 | per_cu = &dwarf2_per_objfile->per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5514 | break; |
6dc55ce9 | 5515 | case DW_IDX_die_offset: |
5516 | /* In a per-CU index (as opposed to a per-module index), index | |
5517 | entries without CU attribute implicitly refer to the single CU. */ | |
5518 | if (per_cu == NULL) | |
5989a64e | 5519 | per_cu = dwarf2_per_objfile->per_bfd->get_cu (0); |
6dc55ce9 | 5520 | break; |
927aa2e7 JK |
5521 | case DW_IDX_GNU_internal: |
5522 | if (!m_map.augmentation_is_gdb) | |
5523 | break; | |
23c13d42 | 5524 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5525 | break; |
5526 | case DW_IDX_GNU_external: | |
5527 | if (!m_map.augmentation_is_gdb) | |
5528 | break; | |
23c13d42 | 5529 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5530 | break; |
5531 | } | |
5532 | } | |
5533 | ||
5534 | /* Skip if already read in. */ | |
af758d11 | 5535 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5536 | goto again; |
5537 | ||
5538 | /* Check static vs global. */ | |
23c13d42 | 5539 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5540 | { |
2b79f376 | 5541 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5542 | const bool symbol_is_static = |
5543 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5544 | if (want_static != symbol_is_static) |
2b79f376 | 5545 | goto again; |
927aa2e7 JK |
5546 | } |
5547 | ||
5548 | /* Match dw2_symtab_iter_next, symbol_kind | |
5549 | and debug_names::psymbol_tag. */ | |
5550 | switch (m_domain) | |
5551 | { | |
5552 | case VAR_DOMAIN: | |
5553 | switch (indexval.dwarf_tag) | |
5554 | { | |
5555 | case DW_TAG_variable: | |
5556 | case DW_TAG_subprogram: | |
5557 | /* Some types are also in VAR_DOMAIN. */ | |
5558 | case DW_TAG_typedef: | |
5559 | case DW_TAG_structure_type: | |
5560 | break; | |
5561 | default: | |
5562 | goto again; | |
5563 | } | |
5564 | break; | |
5565 | case STRUCT_DOMAIN: | |
5566 | switch (indexval.dwarf_tag) | |
5567 | { | |
5568 | case DW_TAG_typedef: | |
5569 | case DW_TAG_structure_type: | |
5570 | break; | |
5571 | default: | |
5572 | goto again; | |
5573 | } | |
5574 | break; | |
5575 | case LABEL_DOMAIN: | |
5576 | switch (indexval.dwarf_tag) | |
5577 | { | |
5578 | case 0: | |
5579 | case DW_TAG_variable: | |
5580 | break; | |
5581 | default: | |
5582 | goto again; | |
5583 | } | |
5584 | break; | |
59c35742 AB |
5585 | case MODULE_DOMAIN: |
5586 | switch (indexval.dwarf_tag) | |
5587 | { | |
5588 | case DW_TAG_module: | |
5589 | break; | |
5590 | default: | |
5591 | goto again; | |
5592 | } | |
5593 | break; | |
927aa2e7 JK |
5594 | default: |
5595 | break; | |
5596 | } | |
5597 | ||
5598 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5599 | debug_names::psymbol_tag. */ | |
5600 | switch (m_search) | |
4b514bc8 | 5601 | { |
927aa2e7 JK |
5602 | case VARIABLES_DOMAIN: |
5603 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5604 | { |
927aa2e7 JK |
5605 | case DW_TAG_variable: |
5606 | break; | |
5607 | default: | |
5608 | goto again; | |
4b514bc8 | 5609 | } |
927aa2e7 JK |
5610 | break; |
5611 | case FUNCTIONS_DOMAIN: | |
5612 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5613 | { |
927aa2e7 JK |
5614 | case DW_TAG_subprogram: |
5615 | break; | |
5616 | default: | |
5617 | goto again; | |
4b514bc8 | 5618 | } |
927aa2e7 JK |
5619 | break; |
5620 | case TYPES_DOMAIN: | |
5621 | switch (indexval.dwarf_tag) | |
5622 | { | |
5623 | case DW_TAG_typedef: | |
5624 | case DW_TAG_structure_type: | |
5625 | break; | |
5626 | default: | |
5627 | goto again; | |
5628 | } | |
5629 | break; | |
59c35742 AB |
5630 | case MODULES_DOMAIN: |
5631 | switch (indexval.dwarf_tag) | |
5632 | { | |
5633 | case DW_TAG_module: | |
5634 | break; | |
5635 | default: | |
5636 | goto again; | |
5637 | } | |
927aa2e7 JK |
5638 | default: |
5639 | break; | |
4b514bc8 | 5640 | } |
927aa2e7 JK |
5641 | |
5642 | return per_cu; | |
4b514bc8 | 5643 | } |
61920122 | 5644 | |
927aa2e7 | 5645 | static struct compunit_symtab * |
c7f839cb | 5646 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5647 | const char *name, domain_enum domain) |
4b514bc8 | 5648 | { |
ed2dc618 SM |
5649 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5650 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5651 | |
5989a64e | 5652 | const auto &mapp = dwarf2_per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5653 | if (!mapp) |
61920122 | 5654 | { |
927aa2e7 JK |
5655 | /* index is NULL if OBJF_READNOW. */ |
5656 | return NULL; | |
5657 | } | |
5658 | const auto &map = *mapp; | |
9291a0cd | 5659 | |
2b79f376 | 5660 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5661 | |
927aa2e7 JK |
5662 | struct compunit_symtab *stab_best = NULL; |
5663 | struct dwarf2_per_cu_data *per_cu; | |
5664 | while ((per_cu = iter.next ()) != NULL) | |
5665 | { | |
5666 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
5667 | compunit_symtab *stab |
5668 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
927aa2e7 | 5669 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5670 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5671 | |
927aa2e7 JK |
5672 | sym = block_find_symbol (block, name, domain, |
5673 | block_find_non_opaque_type_preferred, | |
5674 | &with_opaque); | |
9703b513 | 5675 | |
927aa2e7 JK |
5676 | /* Some caution must be observed with overloaded functions and |
5677 | methods, since the index will not contain any overload | |
5678 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5679 | |
927aa2e7 | 5680 | if (sym != NULL |
987012b8 | 5681 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5682 | return stab; |
5683 | if (with_opaque != NULL | |
987012b8 | 5684 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5685 | stab_best = stab; |
9703b513 | 5686 | |
927aa2e7 | 5687 | /* Keep looking through other CUs. */ |
9703b513 TT |
5688 | } |
5689 | ||
927aa2e7 | 5690 | return stab_best; |
9703b513 TT |
5691 | } |
5692 | ||
927aa2e7 JK |
5693 | /* This dumps minimal information about .debug_names. It is called |
5694 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5695 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5696 | |
927aa2e7 JK |
5697 | static void |
5698 | dw2_debug_names_dump (struct objfile *objfile) | |
5699 | { | |
ed2dc618 SM |
5700 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5701 | = get_dwarf2_per_objfile (objfile); | |
5702 | ||
5989a64e | 5703 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
927aa2e7 | 5704 | printf_filtered (".debug_names:"); |
5989a64e | 5705 | if (dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5706 | printf_filtered (" exists\n"); |
5707 | else | |
5708 | printf_filtered (" faked for \"readnow\"\n"); | |
5709 | printf_filtered ("\n"); | |
9291a0cd TT |
5710 | } |
5711 | ||
9291a0cd | 5712 | static void |
927aa2e7 JK |
5713 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5714 | const char *func_name) | |
9291a0cd | 5715 | { |
ed2dc618 SM |
5716 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5717 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5718 | |
5989a64e SM |
5719 | /* dwarf2_per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5720 | if (dwarf2_per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5721 | { |
5989a64e | 5722 | const mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
24c79950 | 5723 | |
2b79f376 | 5724 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5725 | |
927aa2e7 JK |
5726 | struct dwarf2_per_cu_data *per_cu; |
5727 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a | 5728 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
927aa2e7 JK |
5729 | } |
5730 | } | |
24c79950 | 5731 | |
3b00ef10 TT |
5732 | static void |
5733 | dw2_debug_names_map_matching_symbols | |
5734 | (struct objfile *objfile, | |
5735 | const lookup_name_info &name, domain_enum domain, | |
5736 | int global, | |
5737 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5738 | symbol_compare_ftype *ordered_compare) | |
5739 | { | |
5740 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5741 | = get_dwarf2_per_objfile (objfile); | |
5742 | ||
5743 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5989a64e | 5744 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5745 | return; |
5746 | ||
5989a64e | 5747 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5748 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5749 | ||
5750 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5751 | auto matcher = [&] (const char *symname) | |
5752 | { | |
5753 | if (ordered_compare == nullptr) | |
5754 | return true; | |
5755 | return ordered_compare (symname, match_name) == 0; | |
5756 | }; | |
5757 | ||
5758 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5759 | [&] (offset_type namei) | |
5760 | { | |
5761 | /* The name was matched, now expand corresponding CUs that were | |
5762 | marked. */ | |
5763 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5764 | ||
5765 | struct dwarf2_per_cu_data *per_cu; | |
5766 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5767 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
5768 | nullptr); | |
3b00ef10 TT |
5769 | return true; |
5770 | }); | |
5771 | ||
5772 | /* It's a shame we couldn't do this inside the | |
5773 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5774 | that have already been expanded. Instead, this loop matches what | |
5775 | the psymtab code does. */ | |
5989a64e | 5776 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5777 | { |
af758d11 SM |
5778 | compunit_symtab *symtab = dwarf2_per_objfile->get_symtab (per_cu); |
5779 | if (symtab != nullptr) | |
3b00ef10 TT |
5780 | { |
5781 | const struct block *block | |
af758d11 | 5782 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5783 | if (!iterate_over_symbols_terminated (block, name, |
5784 | domain, callback)) | |
5785 | break; | |
5786 | } | |
5787 | } | |
5788 | } | |
5789 | ||
927aa2e7 JK |
5790 | static void |
5791 | dw2_debug_names_expand_symtabs_matching | |
5792 | (struct objfile *objfile, | |
5793 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5794 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5795 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5796 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5797 | enum search_domain kind) | |
5798 | { | |
ed2dc618 SM |
5799 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5800 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5801 | |
927aa2e7 | 5802 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5989a64e | 5803 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5804 | return; |
9291a0cd | 5805 | |
ed2dc618 | 5806 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5807 | |
c1a66c06 TV |
5808 | if (symbol_matcher == NULL && lookup_name == NULL) |
5809 | { | |
5989a64e | 5810 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5811 | { |
5812 | QUIT; | |
5813 | ||
97a1449a SM |
5814 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5815 | file_matcher, expansion_notify); | |
c1a66c06 TV |
5816 | } |
5817 | return; | |
5818 | } | |
5819 | ||
5989a64e | 5820 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5821 | |
c1a66c06 | 5822 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5823 | symbol_matcher, |
5824 | kind, [&] (offset_type namei) | |
927aa2e7 | 5825 | { |
927aa2e7 JK |
5826 | /* The name was matched, now expand corresponding CUs that were |
5827 | marked. */ | |
5828 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5829 | |
927aa2e7 JK |
5830 | struct dwarf2_per_cu_data *per_cu; |
5831 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5832 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5833 | file_matcher, expansion_notify); | |
3b00ef10 | 5834 | return true; |
44ed8f3e | 5835 | }); |
9291a0cd TT |
5836 | } |
5837 | ||
927aa2e7 | 5838 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5839 | { |
5840 | dw2_has_symbols, | |
5841 | dw2_find_last_source_symtab, | |
5842 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5843 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5844 | dw2_debug_names_lookup_symbol, |
d3214198 | 5845 | NULL, |
9291a0cd | 5846 | dw2_print_stats, |
927aa2e7 | 5847 | dw2_debug_names_dump, |
927aa2e7 | 5848 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5849 | dw2_expand_all_symtabs, |
652a8996 | 5850 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5851 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5852 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5853 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5854 | NULL, |
9291a0cd TT |
5855 | dw2_map_symbol_filenames |
5856 | }; | |
5857 | ||
4485a1c1 | 5858 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5859 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5860 | |
5861 | template <typename T> | |
5862 | static gdb::array_view<const gdb_byte> | |
5863 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5864 | { | |
5865 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5866 | ||
96b79293 | 5867 | if (section->empty ()) |
4485a1c1 SM |
5868 | return {}; |
5869 | ||
5870 | /* Older elfutils strip versions could keep the section in the main | |
5871 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5872 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5873 | return {}; |
5874 | ||
96b79293 | 5875 | section->read (obj); |
4485a1c1 | 5876 | |
8bebfcda PA |
5877 | /* dwarf2_section_info::size is a bfd_size_type, while |
5878 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5879 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5880 | is 32-bit. So we need an explicit narrowing conversion here. | |
5881 | This is fine, because it's impossible to allocate or mmap an | |
5882 | array/buffer larger than what size_t can represent. */ | |
5883 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5884 | } |
5885 | ||
87d6a7aa SM |
5886 | /* Lookup the index cache for the contents of the index associated to |
5887 | DWARF2_OBJ. */ | |
5888 | ||
5889 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5890 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5891 | { |
5892 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5893 | if (build_id == nullptr) | |
5894 | return {}; | |
5895 | ||
5896 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5897 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5898 | } |
5899 | ||
5900 | /* Same as the above, but for DWZ. */ | |
5901 | ||
5902 | static gdb::array_view<const gdb_byte> | |
5903 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5904 | { | |
5905 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5906 | if (build_id == nullptr) | |
5907 | return {}; | |
5908 | ||
5909 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5910 | } | |
5911 | ||
3c0aa29a | 5912 | /* See symfile.h. */ |
9291a0cd | 5913 | |
3c0aa29a PA |
5914 | bool |
5915 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5916 | { |
ed2dc618 SM |
5917 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5918 | = get_dwarf2_per_objfile (objfile); | |
5919 | ||
9291a0cd TT |
5920 | /* If we're about to read full symbols, don't bother with the |
5921 | indices. In this case we also don't care if some other debug | |
5922 | format is making psymtabs, because they are all about to be | |
5923 | expanded anyway. */ | |
5924 | if ((objfile->flags & OBJF_READNOW)) | |
5925 | { | |
5989a64e | 5926 | dwarf2_per_objfile->per_bfd->using_index = 1; |
ed2dc618 SM |
5927 | create_all_comp_units (dwarf2_per_objfile); |
5928 | create_all_type_units (dwarf2_per_objfile); | |
5989a64e | 5929 | dwarf2_per_objfile->per_bfd->quick_file_names_table |
b76e467d | 5930 | = create_quick_file_names_table |
5989a64e | 5931 | (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); |
af758d11 | 5932 | dwarf2_per_objfile->resize_symtabs (); |
9291a0cd | 5933 | |
5989a64e SM |
5934 | for (int i = 0; i < (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
5935 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5936 | { |
5989a64e | 5937 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 5938 | |
5989a64e | 5939 | per_cu->v.quick = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
e254ef6a | 5940 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5941 | } |
5942 | ||
5943 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5944 | these functions will be no-ops because we will have expanded | |
5945 | all symtabs. */ | |
3c0aa29a PA |
5946 | *index_kind = dw_index_kind::GDB_INDEX; |
5947 | return true; | |
9291a0cd TT |
5948 | } |
5949 | ||
ed2dc618 | 5950 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5951 | { |
5952 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
af758d11 | 5953 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
5954 | return true; |
5955 | } | |
927aa2e7 | 5956 | |
4485a1c1 | 5957 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5989a64e | 5958 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 5959 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
5960 | { |
5961 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 5962 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
5963 | return true; |
5964 | } | |
9291a0cd | 5965 | |
87d6a7aa SM |
5966 | /* ... otherwise, try to find the index in the index cache. */ |
5967 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5968 | get_gdb_index_contents_from_cache, | |
5969 | get_gdb_index_contents_from_cache_dwz)) | |
5970 | { | |
5971 | global_index_cache.hit (); | |
5972 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 5973 | dwarf2_per_objfile->resize_symtabs (); |
87d6a7aa SM |
5974 | return true; |
5975 | } | |
5976 | ||
5977 | global_index_cache.miss (); | |
3c0aa29a | 5978 | return false; |
9291a0cd TT |
5979 | } |
5980 | ||
5981 | \f | |
5982 | ||
dce234bc PP |
5983 | /* Build a partial symbol table. */ |
5984 | ||
5985 | void | |
f29dff0a | 5986 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5987 | { |
ed2dc618 SM |
5988 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5989 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5990 | |
6eee24ce | 5991 | init_psymbol_list (objfile, 1024); |
c906108c | 5992 | |
a70b8144 | 5993 | try |
c9bf0622 TT |
5994 | { |
5995 | /* This isn't really ideal: all the data we allocate on the | |
5996 | objfile's obstack is still uselessly kept around. However, | |
5997 | freeing it seems unsafe. */ | |
906768f9 | 5998 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5999 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6000 | psymtabs.keep (); |
87d6a7aa | 6001 | |
af758d11 SM |
6002 | dwarf2_per_objfile->resize_symtabs (); |
6003 | ||
87d6a7aa SM |
6004 | /* (maybe) store an index in the cache. */ |
6005 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6006 | } |
230d2906 | 6007 | catch (const gdb_exception_error &except) |
492d29ea PA |
6008 | { |
6009 | exception_print (gdb_stderr, except); | |
6010 | } | |
c906108c | 6011 | } |
c906108c | 6012 | |
3b80fe9b DE |
6013 | /* Find the base address of the compilation unit for range lists and |
6014 | location lists. It will normally be specified by DW_AT_low_pc. | |
6015 | In DWARF-3 draft 4, the base address could be overridden by | |
6016 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6017 | compilation units with discontinuous ranges. */ | |
6018 | ||
6019 | static void | |
6020 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6021 | { | |
6022 | struct attribute *attr; | |
6023 | ||
2b24b6e4 | 6024 | cu->base_address.reset (); |
3b80fe9b DE |
6025 | |
6026 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6027 | if (attr != nullptr) |
2b24b6e4 | 6028 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6029 | else |
6030 | { | |
6031 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6032 | if (attr != nullptr) |
2b24b6e4 | 6033 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6034 | } |
6035 | } | |
6036 | ||
36586728 TT |
6037 | /* Helper function that returns the proper abbrev section for |
6038 | THIS_CU. */ | |
6039 | ||
6040 | static struct dwarf2_section_info * | |
6041 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6042 | { | |
6043 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6044 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6045 | |
6046 | if (this_cu->is_dwz) | |
c3699833 | 6047 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6048 | else |
c3699833 | 6049 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6050 | |
6051 | return abbrev; | |
6052 | } | |
6053 | ||
f4dc4d17 DE |
6054 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6055 | ||
6056 | static sect_offset | |
ed2dc618 SM |
6057 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6058 | struct dwarf2_section_info *section, | |
9c541725 | 6059 | sect_offset sect_off) |
f4dc4d17 | 6060 | { |
96b79293 | 6061 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6062 | const gdb_byte *info_ptr; |
ac298888 | 6063 | unsigned int initial_length_size, offset_size; |
43988095 | 6064 | uint16_t version; |
f4dc4d17 | 6065 | |
96b79293 | 6066 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 6067 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6068 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6069 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6070 | info_ptr += initial_length_size; |
6071 | ||
6072 | version = read_2_bytes (abfd, info_ptr); | |
6073 | info_ptr += 2; | |
6074 | if (version >= 5) | |
6075 | { | |
6076 | /* Skip unit type and address size. */ | |
6077 | info_ptr += 2; | |
6078 | } | |
6079 | ||
24aa364d | 6080 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6081 | } |
6082 | ||
b83470bf TT |
6083 | /* A partial symtab that is used only for include files. */ |
6084 | struct dwarf2_include_psymtab : public partial_symtab | |
6085 | { | |
6086 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6087 | : partial_symtab (filename, objfile) | |
6088 | { | |
6089 | } | |
6090 | ||
6091 | void read_symtab (struct objfile *objfile) override | |
6092 | { | |
194d088f TV |
6093 | /* It's an include file, no symbols to read for it. |
6094 | Everything is in the includer symtab. */ | |
6095 | ||
6096 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6097 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6098 | model the includer. But if we go the regular route of calling | |
6099 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6100 | to expand the includer, we'll only use expand_psymtab on the includer | |
6101 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6102 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6103 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6104 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6105 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6106 | } |
6107 | ||
6108 | void expand_psymtab (struct objfile *objfile) override | |
6109 | { | |
194d088f TV |
6110 | /* This is not called by read_symtab, and should not be called by any |
6111 | expand_dependencies. */ | |
6112 | gdb_assert (false); | |
b83470bf TT |
6113 | } |
6114 | ||
5717c425 | 6115 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6116 | { |
5717c425 | 6117 | return includer ()->readin_p (objfile); |
b83470bf TT |
6118 | } |
6119 | ||
5717c425 | 6120 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6121 | { |
6122 | return nullptr; | |
6123 | } | |
6124 | ||
6125 | private: | |
194d088f TV |
6126 | partial_symtab *includer () const |
6127 | { | |
6128 | /* An include psymtab has exactly one dependency: the psymtab that | |
6129 | includes it. */ | |
6130 | gdb_assert (this->number_of_dependencies == 1); | |
6131 | return this->dependencies[0]; | |
6132 | } | |
b83470bf TT |
6133 | }; |
6134 | ||
aaa75496 JB |
6135 | /* Allocate a new partial symtab for file named NAME and mark this new |
6136 | partial symtab as being an include of PST. */ | |
6137 | ||
6138 | static void | |
891813be | 6139 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6140 | struct objfile *objfile) |
6141 | { | |
b83470bf | 6142 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6143 | |
fbd9ab74 | 6144 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6145 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6146 | |
a9342b62 | 6147 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6148 | subpst->dependencies[0] = pst; |
6149 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6150 | } |
6151 | ||
6152 | /* Read the Line Number Program data and extract the list of files | |
6153 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6154 | partial symtab for each of these included files. */ |
aaa75496 JB |
6155 | |
6156 | static void | |
6157 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6158 | struct die_info *die, |
891813be | 6159 | dwarf2_psymtab *pst) |
aaa75496 | 6160 | { |
fff8551c | 6161 | line_header_up lh; |
d85a05f0 | 6162 | struct attribute *attr; |
aaa75496 | 6163 | |
d85a05f0 | 6164 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6165 | if (attr != nullptr) |
9c541725 | 6166 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6167 | if (lh == NULL) |
6168 | return; /* No linetable, so no includes. */ | |
6169 | ||
79748972 TT |
6170 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6171 | that we pass in the raw text_low here; that is ok because we're | |
6172 | only decoding the line table to make include partial symtabs, and | |
6173 | so the addresses aren't really used. */ | |
4ae976d1 | 6174 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6175 | pst->raw_text_low (), 1); |
aaa75496 JB |
6176 | } |
6177 | ||
348e048f | 6178 | static hashval_t |
52dc124a | 6179 | hash_signatured_type (const void *item) |
348e048f | 6180 | { |
9a3c8263 SM |
6181 | const struct signatured_type *sig_type |
6182 | = (const struct signatured_type *) item; | |
9a619af0 | 6183 | |
348e048f | 6184 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6185 | return sig_type->signature; |
348e048f DE |
6186 | } |
6187 | ||
6188 | static int | |
52dc124a | 6189 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6190 | { |
9a3c8263 SM |
6191 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6192 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6193 | |
348e048f DE |
6194 | return lhs->signature == rhs->signature; |
6195 | } | |
6196 | ||
1fd400ff TT |
6197 | /* Allocate a hash table for signatured types. */ |
6198 | ||
b0b6a987 | 6199 | static htab_up |
298e9637 | 6200 | allocate_signatured_type_table () |
1fd400ff | 6201 | { |
b0b6a987 TT |
6202 | return htab_up (htab_create_alloc (41, |
6203 | hash_signatured_type, | |
6204 | eq_signatured_type, | |
6205 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6206 | } |
6207 | ||
d467dd73 | 6208 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6209 | |
6210 | static int | |
d467dd73 | 6211 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6212 | { |
9a3c8263 | 6213 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6214 | std::vector<signatured_type *> *all_type_units |
6215 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6216 | |
b2bdb8cf | 6217 | all_type_units->push_back (sigt); |
1fd400ff TT |
6218 | |
6219 | return 1; | |
6220 | } | |
6221 | ||
78d4d2c5 | 6222 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6223 | and fill them into TYPES_HTAB. It will process only type units, |
6224 | therefore DW_UT_type. */ | |
c88ee1f0 | 6225 | |
78d4d2c5 | 6226 | static void |
ed2dc618 SM |
6227 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6228 | struct dwo_file *dwo_file, | |
b0b6a987 | 6229 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6230 | rcuh_kind section_kind) |
348e048f | 6231 | { |
3019eac3 | 6232 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6233 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6234 | bfd *abfd; |
6235 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6236 | |
4bdcc0c1 DE |
6237 | abbrev_section = (dwo_file != NULL |
6238 | ? &dwo_file->sections.abbrev | |
5989a64e | 6239 | : &dwarf2_per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6240 | |
b4f54984 | 6241 | if (dwarf_read_debug) |
43988095 | 6242 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6243 | section->get_name (), |
6244 | abbrev_section->get_file_name ()); | |
09406207 | 6245 | |
96b79293 | 6246 | section->read (objfile); |
78d4d2c5 | 6247 | info_ptr = section->buffer; |
348e048f | 6248 | |
78d4d2c5 JK |
6249 | if (info_ptr == NULL) |
6250 | return; | |
348e048f | 6251 | |
78d4d2c5 JK |
6252 | /* We can't set abfd until now because the section may be empty or |
6253 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6254 | abfd = section->get_bfd_owner (); |
348e048f | 6255 | |
c0ab21c2 TT |
6256 | /* We don't use cutu_reader here because we don't need to read |
6257 | any dies: the signature is in the header. */ | |
3019eac3 | 6258 | |
78d4d2c5 JK |
6259 | end_ptr = info_ptr + section->size; |
6260 | while (info_ptr < end_ptr) | |
6261 | { | |
78d4d2c5 JK |
6262 | struct signatured_type *sig_type; |
6263 | struct dwo_unit *dwo_tu; | |
6264 | void **slot; | |
6265 | const gdb_byte *ptr = info_ptr; | |
6266 | struct comp_unit_head header; | |
6267 | unsigned int length; | |
8b70b953 | 6268 | |
9c541725 | 6269 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6270 | |
a49dd8dd JK |
6271 | /* Initialize it due to a false compiler warning. */ |
6272 | header.signature = -1; | |
9c541725 | 6273 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6274 | |
78d4d2c5 JK |
6275 | /* We need to read the type's signature in order to build the hash |
6276 | table, but we don't need anything else just yet. */ | |
348e048f | 6277 | |
ed2dc618 | 6278 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6279 | abbrev_section, ptr, section_kind); |
348e048f | 6280 | |
4057dfde | 6281 | length = header.get_length (); |
6caca83c | 6282 | |
78d4d2c5 JK |
6283 | /* Skip dummy type units. */ |
6284 | if (ptr >= info_ptr + length | |
43988095 JK |
6285 | || peek_abbrev_code (abfd, ptr) == 0 |
6286 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6287 | { |
6288 | info_ptr += length; | |
6289 | continue; | |
6290 | } | |
dee91e82 | 6291 | |
78d4d2c5 JK |
6292 | if (types_htab == NULL) |
6293 | { | |
6294 | if (dwo_file) | |
298e9637 | 6295 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6296 | else |
298e9637 | 6297 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6298 | } |
8b70b953 | 6299 | |
78d4d2c5 JK |
6300 | if (dwo_file) |
6301 | { | |
6302 | sig_type = NULL; | |
5989a64e | 6303 | dwo_tu = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
78d4d2c5 JK |
6304 | struct dwo_unit); |
6305 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6306 | dwo_tu->signature = header.signature; |
9c541725 | 6307 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6308 | dwo_tu->section = section; |
9c541725 | 6309 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6310 | dwo_tu->length = length; |
6311 | } | |
6312 | else | |
6313 | { | |
6314 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6315 | The real type_offset is in the DWO file. */ | |
6316 | dwo_tu = NULL; | |
5989a64e | 6317 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6318 | sig_type->signature = header.signature; |
9c541725 | 6319 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6320 | sig_type->per_cu.is_debug_types = 1; |
6321 | sig_type->per_cu.section = section; | |
9c541725 | 6322 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6323 | sig_type->per_cu.length = length; |
6324 | } | |
6325 | ||
b0b6a987 | 6326 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6327 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6328 | INSERT); | |
6329 | gdb_assert (slot != NULL); | |
6330 | if (*slot != NULL) | |
6331 | { | |
9c541725 | 6332 | sect_offset dup_sect_off; |
0349ea22 | 6333 | |
3019eac3 DE |
6334 | if (dwo_file) |
6335 | { | |
78d4d2c5 JK |
6336 | const struct dwo_unit *dup_tu |
6337 | = (const struct dwo_unit *) *slot; | |
6338 | ||
9c541725 | 6339 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6340 | } |
6341 | else | |
6342 | { | |
78d4d2c5 JK |
6343 | const struct signatured_type *dup_tu |
6344 | = (const struct signatured_type *) *slot; | |
6345 | ||
9c541725 | 6346 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6347 | } |
8b70b953 | 6348 | |
b98664d3 | 6349 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6350 | " the entry at offset %s, signature %s"), |
6351 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6352 | hex_string (header.signature)); |
78d4d2c5 JK |
6353 | } |
6354 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6355 | |
78d4d2c5 | 6356 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6357 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6358 | sect_offset_str (sect_off), | |
43988095 | 6359 | hex_string (header.signature)); |
3019eac3 | 6360 | |
78d4d2c5 JK |
6361 | info_ptr += length; |
6362 | } | |
6363 | } | |
3019eac3 | 6364 | |
78d4d2c5 JK |
6365 | /* Create the hash table of all entries in the .debug_types |
6366 | (or .debug_types.dwo) section(s). | |
6367 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6368 | otherwise it is NULL. | |
b3c8eb43 | 6369 | |
78d4d2c5 | 6370 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6371 | |
78d4d2c5 | 6372 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6373 | |
78d4d2c5 | 6374 | static void |
ed2dc618 SM |
6375 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6376 | struct dwo_file *dwo_file, | |
fd5866f6 | 6377 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6378 | htab_up &types_htab) |
78d4d2c5 | 6379 | { |
fd5866f6 SM |
6380 | for (dwarf2_section_info §ion : type_sections) |
6381 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6382 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6383 | } |
6384 | ||
6385 | /* Create the hash table of all entries in the .debug_types section, | |
6386 | and initialize all_type_units. | |
6387 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6388 | otherwise non-zero. */ | |
6389 | ||
6390 | static int | |
ed2dc618 | 6391 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6392 | { |
b0b6a987 | 6393 | htab_up types_htab; |
3019eac3 | 6394 | |
ed2dc618 | 6395 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6396 | &dwarf2_per_objfile->per_bfd->info, types_htab, |
43988095 | 6397 | rcuh_kind::COMPILE); |
ed2dc618 | 6398 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6399 | dwarf2_per_objfile->per_bfd->types, types_htab); |
3019eac3 DE |
6400 | if (types_htab == NULL) |
6401 | { | |
5989a64e | 6402 | dwarf2_per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6403 | return 0; |
6404 | } | |
6405 | ||
5989a64e | 6406 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6407 | |
5989a64e SM |
6408 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
6409 | dwarf2_per_objfile->per_bfd->all_type_units.reserve | |
6410 | (htab_elements (dwarf2_per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6411 | |
5989a64e | 6412 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6413 | add_signatured_type_cu_to_table, |
5989a64e | 6414 | &dwarf2_per_objfile->per_bfd->all_type_units); |
1fd400ff | 6415 | |
348e048f DE |
6416 | return 1; |
6417 | } | |
6418 | ||
5989a64e | 6419 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6420 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6421 | Otherwise we find one. */ | |
6422 | ||
6423 | static struct signatured_type * | |
ed2dc618 SM |
6424 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6425 | void **slot) | |
6aa5f3a6 | 6426 | { |
5989a64e SM |
6427 | if (dwarf2_per_objfile->per_bfd->all_type_units.size () |
6428 | == dwarf2_per_objfile->per_bfd->all_type_units.capacity ()) | |
6429 | ++dwarf2_per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6430 | |
5989a64e | 6431 | signatured_type *sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6432 | |
af758d11 SM |
6433 | dwarf2_per_objfile->resize_symtabs (); |
6434 | ||
5989a64e | 6435 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6436 | sig_type->signature = sig; |
6437 | sig_type->per_cu.is_debug_types = 1; | |
5989a64e | 6438 | if (dwarf2_per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6439 | { |
6440 | sig_type->per_cu.v.quick = | |
5989a64e | 6441 | OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6442 | struct dwarf2_per_cu_quick_data); |
6443 | } | |
6444 | ||
6445 | if (slot == NULL) | |
6446 | { | |
5989a64e | 6447 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6448 | sig_type, INSERT); |
6449 | } | |
6450 | gdb_assert (*slot == NULL); | |
6451 | *slot = sig_type; | |
6452 | /* The rest of sig_type must be filled in by the caller. */ | |
6453 | return sig_type; | |
6454 | } | |
6455 | ||
a2ce51a0 DE |
6456 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6457 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6458 | ||
6459 | static void | |
ed2dc618 | 6460 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6461 | struct signatured_type *sig_entry, |
6462 | struct dwo_unit *dwo_entry) | |
6463 | { | |
1859c670 SM |
6464 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
6465 | ||
7ee85ab1 | 6466 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6467 | gdb_assert (! sig_entry->per_cu.queued); |
6468 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
1859c670 | 6469 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6470 | { |
6471 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
af758d11 | 6472 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6473 | } |
6474 | else | |
6475 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6476 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6477 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6478 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6479 | gdb_assert (sig_entry->dwo_unit == NULL); |
6480 | ||
6481 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6482 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6483 | sig_entry->per_cu.length = dwo_entry->length; |
6484 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6485 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6486 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6487 | sig_entry->dwo_unit = dwo_entry; | |
6488 | } | |
6489 | ||
6490 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6491 | If we haven't read the TU yet, create the signatured_type data structure |
6492 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6493 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6494 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6495 | containing that CU. Otherwise we could end up reading several other DWO | |
6496 | files (due to comdat folding) to process the transitive closure of all the | |
6497 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6498 | type signature that it needs. | |
a2ce51a0 DE |
6499 | We only do this for .gdb_index because in the psymtab case we already have |
6500 | to read all the DWOs to build the type unit groups. */ | |
6501 | ||
6502 | static struct signatured_type * | |
6503 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6504 | { | |
5e22e966 | 6505 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6506 | struct dwo_file *dwo_file; |
6507 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6508 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6509 | void **slot; |
a2ce51a0 | 6510 | |
5989a64e | 6511 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 | 6512 | |
6aa5f3a6 DE |
6513 | /* If TU skeletons have been removed then we may not have read in any |
6514 | TUs yet. */ | |
5989a64e SM |
6515 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6516 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6517 | |
6518 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6519 | Use the global signatured_types array to do our own comdat-folding |
6520 | of types. If this is the first time we're reading this TU, and | |
6521 | the TU has an entry in .gdb_index, replace the recorded data from | |
6522 | .gdb_index with this TU. */ | |
a2ce51a0 | 6523 | |
a2ce51a0 | 6524 | find_sig_entry.signature = sig; |
5989a64e | 6525 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6526 | &find_sig_entry, INSERT); |
9a3c8263 | 6527 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6528 | |
6529 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6530 | read. Don't reassign the global entry to point to this DWO if that's |
6531 | the case. Also note that if the TU is already being read, it may not | |
6532 | have come from a DWO, the program may be a mix of Fission-compiled | |
6533 | code and non-Fission-compiled code. */ | |
6534 | ||
6535 | /* Have we already tried to read this TU? | |
6536 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6537 | needn't exist in the global table yet). */ | |
6538 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6539 | return sig_entry; |
6540 | ||
6aa5f3a6 DE |
6541 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6542 | dwo_unit of the TU itself. */ | |
6543 | dwo_file = cu->dwo_unit->dwo_file; | |
6544 | ||
a2ce51a0 DE |
6545 | /* Ok, this is the first time we're reading this TU. */ |
6546 | if (dwo_file->tus == NULL) | |
6547 | return NULL; | |
6548 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6549 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6550 | &find_dwo_entry); | |
a2ce51a0 DE |
6551 | if (dwo_entry == NULL) |
6552 | return NULL; | |
6553 | ||
6aa5f3a6 DE |
6554 | /* If the global table doesn't have an entry for this TU, add one. */ |
6555 | if (sig_entry == NULL) | |
ed2dc618 | 6556 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6557 | |
ed2dc618 | 6558 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6559 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6560 | return sig_entry; |
6561 | } | |
6562 | ||
a2ce51a0 DE |
6563 | /* Subroutine of lookup_signatured_type. |
6564 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6565 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6566 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6567 | |
6568 | static struct signatured_type * | |
6569 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6570 | { | |
5e22e966 | 6571 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6572 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6573 | struct dwo_unit *dwo_entry; |
6574 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6575 | void **slot; |
a2ce51a0 | 6576 | |
5989a64e | 6577 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6578 | gdb_assert (dwp_file != NULL); |
6579 | ||
6aa5f3a6 DE |
6580 | /* If TU skeletons have been removed then we may not have read in any |
6581 | TUs yet. */ | |
5989a64e SM |
6582 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6583 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6584 | |
6aa5f3a6 | 6585 | find_sig_entry.signature = sig; |
5989a64e | 6586 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6587 | &find_sig_entry, INSERT); |
9a3c8263 | 6588 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6589 | |
6590 | /* Have we already tried to read this TU? | |
6591 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6592 | needn't exist in the global table yet). */ | |
6593 | if (sig_entry != NULL) | |
6594 | return sig_entry; | |
6595 | ||
a2ce51a0 DE |
6596 | if (dwp_file->tus == NULL) |
6597 | return NULL; | |
ed2dc618 | 6598 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6599 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6600 | if (dwo_entry == NULL) |
6601 | return NULL; | |
6602 | ||
ed2dc618 SM |
6603 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6604 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6605 | |
a2ce51a0 DE |
6606 | return sig_entry; |
6607 | } | |
6608 | ||
380bca97 | 6609 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6610 | Returns NULL if signature SIG is not present in the table. |
6611 | It is up to the caller to complain about this. */ | |
348e048f DE |
6612 | |
6613 | static struct signatured_type * | |
a2ce51a0 | 6614 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6615 | { |
5e22e966 | 6616 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6617 | |
a2ce51a0 | 6618 | if (cu->dwo_unit |
5989a64e | 6619 | && dwarf2_per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6620 | { |
6621 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6622 | These cases require special processing. */ | |
ed2dc618 | 6623 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6624 | return lookup_dwo_signatured_type (cu, sig); |
6625 | else | |
6626 | return lookup_dwp_signatured_type (cu, sig); | |
6627 | } | |
6628 | else | |
6629 | { | |
6630 | struct signatured_type find_entry, *entry; | |
348e048f | 6631 | |
5989a64e | 6632 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6633 | return NULL; |
6634 | find_entry.signature = sig; | |
9a3c8263 | 6635 | entry = ((struct signatured_type *) |
5989a64e | 6636 | htab_find (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6637 | &find_entry)); |
a2ce51a0 DE |
6638 | return entry; |
6639 | } | |
348e048f | 6640 | } |
18a8505e | 6641 | |
42e7ad6c | 6642 | /* Low level DIE reading support. */ |
348e048f | 6643 | |
d85a05f0 DJ |
6644 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6645 | ||
6646 | static void | |
6647 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6648 | struct dwarf2_cu *cu, |
3019eac3 | 6649 | struct dwarf2_section_info *section, |
685af9cd TT |
6650 | struct dwo_file *dwo_file, |
6651 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6652 | { |
fceca515 | 6653 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6654 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6655 | reader->cu = cu; |
3019eac3 | 6656 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6657 | reader->die_section = section; |
6658 | reader->buffer = section->buffer; | |
f664829e | 6659 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6660 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6661 | } |
6662 | ||
c0ab21c2 | 6663 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6664 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6665 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6666 | already. |
6667 | ||
6668 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6669 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6670 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6671 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6672 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6673 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6674 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6675 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6676 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6677 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6678 | kept around for at least as long as *RESULT_READER. | |
6679 | ||
b0c7bfa9 DE |
6680 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6681 | ||
6682 | static int | |
4ab09049 | 6683 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6684 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6685 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6686 | const char *stub_comp_dir, |
b0c7bfa9 | 6687 | struct die_reader_specs *result_reader, |
d521ce57 | 6688 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6689 | struct die_info **result_comp_unit_die, |
685af9cd | 6690 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6691 | { |
4ab09049 SM |
6692 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
6693 | dwarf2_per_cu_data *per_cu = cu->per_cu; | |
b0c7bfa9 | 6694 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
b0c7bfa9 | 6695 | bfd *abfd; |
d521ce57 | 6696 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6697 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6698 | int i,num_extra_attrs; | |
6699 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6700 | struct die_info *comp_unit_die; |
6701 | ||
b0aeadb3 DE |
6702 | /* At most one of these may be provided. */ |
6703 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6704 | |
b0c7bfa9 DE |
6705 | /* These attributes aren't processed until later: |
6706 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6707 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6708 | referenced later. However, these attributes are found in the stub | |
6709 | which we won't have later. In order to not impose this complication | |
6710 | on the rest of the code, we read them here and copy them to the | |
6711 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6712 | |
6713 | stmt_list = NULL; | |
6714 | low_pc = NULL; | |
6715 | high_pc = NULL; | |
6716 | ranges = NULL; | |
6717 | comp_dir = NULL; | |
6718 | ||
6719 | if (stub_comp_unit_die != NULL) | |
6720 | { | |
6721 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6722 | DWO file. */ | |
4ab09049 | 6723 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6724 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6725 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6726 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6727 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6728 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6729 | ||
a39fdb41 | 6730 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6731 | |
18a8505e AT |
6732 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6733 | here (if needed). We need the value before we can process | |
6734 | DW_AT_ranges. */ | |
a39fdb41 | 6735 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6736 | } |
a2ce51a0 DE |
6737 | else if (stub_comp_dir != NULL) |
6738 | { | |
6739 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6740 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6741 | comp_dir->name = DW_AT_comp_dir; |
6742 | comp_dir->form = DW_FORM_string; | |
6743 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6744 | DW_STRING (comp_dir) = stub_comp_dir; | |
6745 | } | |
b0c7bfa9 DE |
6746 | |
6747 | /* Set up for reading the DWO CU/TU. */ | |
6748 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6749 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6750 | section->read (objfile); |
6751 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6752 | begin_info_ptr = info_ptr = (section->buffer |
6753 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6754 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6755 | |
4ab09049 | 6756 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6757 | { |
4ab09049 | 6758 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6759 | |
ed2dc618 SM |
6760 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6761 | &cu->header, section, | |
b0c7bfa9 | 6762 | dwo_abbrev_section, |
43988095 | 6763 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6764 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6765 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6766 | { |
6767 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6768 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6769 | hex_string (sig_type->signature), |
43988095 | 6770 | hex_string (cu->header.signature), |
9d8780f0 | 6771 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6772 | bfd_get_filename (abfd)); |
6773 | } | |
9c541725 | 6774 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6775 | /* For DWOs coming from DWP files, we don't know the CU length |
6776 | nor the type's offset in the TU until now. */ | |
4057dfde | 6777 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6778 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6779 | |
6780 | /* Establish the type offset that can be used to lookup the type. | |
6781 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6782 | sig_type->type_offset_in_section |
6783 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6784 | } |
6785 | else | |
6786 | { | |
ed2dc618 SM |
6787 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6788 | &cu->header, section, | |
b0c7bfa9 | 6789 | dwo_abbrev_section, |
43988095 | 6790 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6791 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6792 | /* For DWOs coming from DWP files, we don't know the CU length |
6793 | until now. */ | |
4057dfde | 6794 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6795 | } |
6796 | ||
685af9cd | 6797 | *result_dwo_abbrev_table |
86de1d91 TT |
6798 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6799 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6800 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6801 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6802 | |
6803 | /* Read in the die, but leave space to copy over the attributes | |
6804 | from the stub. This has the benefit of simplifying the rest of | |
6805 | the code - all the work to maintain the illusion of a single | |
6806 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6807 | num_extra_attrs = ((stmt_list != NULL) | |
6808 | + (low_pc != NULL) | |
6809 | + (high_pc != NULL) | |
6810 | + (ranges != NULL) | |
6811 | + (comp_dir != NULL)); | |
6812 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6813 | num_extra_attrs); |
b0c7bfa9 DE |
6814 | |
6815 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6816 | comp_unit_die = *result_comp_unit_die; | |
6817 | i = comp_unit_die->num_attrs; | |
6818 | if (stmt_list != NULL) | |
6819 | comp_unit_die->attrs[i++] = *stmt_list; | |
6820 | if (low_pc != NULL) | |
6821 | comp_unit_die->attrs[i++] = *low_pc; | |
6822 | if (high_pc != NULL) | |
6823 | comp_unit_die->attrs[i++] = *high_pc; | |
6824 | if (ranges != NULL) | |
6825 | comp_unit_die->attrs[i++] = *ranges; | |
6826 | if (comp_dir != NULL) | |
6827 | comp_unit_die->attrs[i++] = *comp_dir; | |
6828 | comp_unit_die->num_attrs += num_extra_attrs; | |
6829 | ||
b4f54984 | 6830 | if (dwarf_die_debug) |
bf6af496 DE |
6831 | { |
6832 | fprintf_unfiltered (gdb_stdlog, | |
6833 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6834 | section->get_name (), |
bf6af496 DE |
6835 | (unsigned) (begin_info_ptr - section->buffer), |
6836 | bfd_get_filename (abfd)); | |
b4f54984 | 6837 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6838 | } |
6839 | ||
b0c7bfa9 DE |
6840 | /* Skip dummy compilation units. */ |
6841 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6842 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6843 | return 0; | |
6844 | ||
6845 | *result_info_ptr = info_ptr; | |
6846 | return 1; | |
6847 | } | |
6848 | ||
a084a2a6 AT |
6849 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6850 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6851 | signature is part of the header. */ | |
6852 | static gdb::optional<ULONGEST> | |
6853 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6854 | { | |
6855 | if (cu->header.version >= 5) | |
6856 | return cu->header.signature; | |
6857 | struct attribute *attr; | |
6858 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6859 | if (attr == nullptr) | |
6860 | return gdb::optional<ULONGEST> (); | |
6861 | return DW_UNSND (attr); | |
6862 | } | |
6863 | ||
c0ab21c2 | 6864 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6865 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6866 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6867 | |
6868 | static struct dwo_unit * | |
4ab09049 | 6869 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6870 | { |
4ab09049 | 6871 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6872 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6873 | const char *comp_dir; |
b0c7bfa9 | 6874 | |
a2ce51a0 DE |
6875 | gdb_assert (cu != NULL); |
6876 | ||
b0c7bfa9 | 6877 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6878 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6879 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6880 | |
4ab09049 SM |
6881 | if (per_cu->is_debug_types) |
6882 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6883 | else |
6884 | { | |
a084a2a6 | 6885 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6886 | |
a084a2a6 | 6887 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6888 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6889 | " [in module %s]"), | |
4ab09049 SM |
6890 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6891 | ||
6892 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6893 | } |
6894 | ||
b0c7bfa9 DE |
6895 | return dwo_unit; |
6896 | } | |
6897 | ||
c0ab21c2 | 6898 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6899 | See it for a description of the parameters. |
fcd3b13d | 6900 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6901 | |
c0ab21c2 | 6902 | void |
9e021579 SM |
6903 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6904 | dwarf2_per_objfile *per_objfile, | |
6751ebae | 6905 | int use_existing_cu) |
a2ce51a0 | 6906 | { |
a2ce51a0 | 6907 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6908 | |
6909 | /* Verify we can do the following downcast, and that we have the | |
6910 | data we need. */ | |
6911 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6912 | sig_type = (struct signatured_type *) this_cu; | |
6913 | gdb_assert (sig_type->dwo_unit != NULL); | |
6914 | ||
6aa5f3a6 DE |
6915 | if (use_existing_cu && this_cu->cu != NULL) |
6916 | { | |
6917 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6918 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6919 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6920 | } |
6921 | else | |
6922 | { | |
6923 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6924 | gdb_assert (this_cu->cu == NULL); | |
9e021579 | 6925 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
6aa5f3a6 DE |
6926 | } |
6927 | ||
6928 | /* A future optimization, if needed, would be to use an existing | |
6929 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6930 | could share abbrev tables. */ | |
a2ce51a0 | 6931 | |
4ab09049 | 6932 | if (read_cutu_die_from_dwo (this_cu->cu, sig_type->dwo_unit, |
a2ce51a0 DE |
6933 | NULL /* stub_comp_unit_die */, |
6934 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6935 | this, &info_ptr, |
3e225074 | 6936 | &comp_unit_die, |
c0ab21c2 | 6937 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6938 | { |
6939 | /* Dummy die. */ | |
c0ab21c2 | 6940 | dummy_p = true; |
a2ce51a0 | 6941 | } |
a2ce51a0 DE |
6942 | } |
6943 | ||
fd820528 | 6944 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6945 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6946 | |
f4dc4d17 DE |
6947 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6948 | Otherwise the table specified in the comp unit header is read in and used. | |
6949 | This is an optimization for when we already have the abbrev table. | |
6950 | ||
dee91e82 | 6951 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6952 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6953 | |
ab432490 SM |
6954 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
6955 | dwarf2_per_objfile *dwarf2_per_objfile, | |
c0ab21c2 | 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 | { |
dee91e82 | 6962 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6963 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6964 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6965 | struct dwarf2_cu *cu; |
c0ab21c2 | 6966 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6967 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6968 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6969 | /* Non-zero if CU currently points to a DWO file and we need to |
6970 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6971 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6972 | int rereading_dwo_cu = 0; |
c906108c | 6973 | |
b4f54984 | 6974 | if (dwarf_die_debug) |
9d8780f0 | 6975 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6976 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6977 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6978 | |
a2ce51a0 DE |
6979 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6980 | file (instead of going through the stub), short-circuit all of this. */ | |
6981 | if (this_cu->reading_dwo_directly) | |
6982 | { | |
6983 | /* Narrow down the scope of possibilities to have to understand. */ | |
6984 | gdb_assert (this_cu->is_debug_types); | |
6985 | gdb_assert (abbrev_table == NULL); | |
9e021579 | 6986 | init_tu_and_read_dwo_dies (this_cu, dwarf2_per_objfile, use_existing_cu); |
a2ce51a0 DE |
6987 | return; |
6988 | } | |
6989 | ||
dee91e82 | 6990 | /* This is cheap if the section is already read in. */ |
96b79293 | 6991 | section->read (objfile); |
dee91e82 | 6992 | |
9c541725 | 6993 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6994 | |
6995 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6996 | |
6997 | if (use_existing_cu && this_cu->cu != NULL) | |
6998 | { | |
6999 | cu = this_cu->cu; | |
42e7ad6c DE |
7000 | /* If this CU is from a DWO file we need to start over, we need to |
7001 | refetch the attributes from the skeleton CU. | |
7002 | This could be optimized by retrieving those attributes from when we | |
7003 | were here the first time: the previous comp_unit_die was stored in | |
7004 | comp_unit_obstack. But there's no data yet that we need this | |
7005 | optimization. */ | |
7006 | if (cu->dwo_unit != NULL) | |
7007 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7008 | } |
7009 | else | |
7010 | { | |
7011 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7012 | gdb_assert (this_cu->cu == NULL); | |
9e021579 | 7013 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
c0ab21c2 | 7014 | cu = m_new_cu.get (); |
42e7ad6c | 7015 | } |
dee91e82 | 7016 | |
b0c7bfa9 | 7017 | /* Get the header. */ |
9c541725 | 7018 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7019 | { |
7020 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7021 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7022 | } |
7023 | else | |
7024 | { | |
3019eac3 | 7025 | if (this_cu->is_debug_types) |
dee91e82 | 7026 | { |
ed2dc618 SM |
7027 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7028 | &cu->header, section, | |
4bdcc0c1 | 7029 | abbrev_section, info_ptr, |
43988095 | 7030 | rcuh_kind::TYPE); |
dee91e82 | 7031 | |
42e7ad6c DE |
7032 | /* Since per_cu is the first member of struct signatured_type, |
7033 | we can go from a pointer to one to a pointer to the other. */ | |
7034 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7035 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7036 | gdb_assert (sig_type->type_offset_in_tu |
7037 | == cu->header.type_cu_offset_in_tu); | |
7038 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7039 | |
42e7ad6c DE |
7040 | /* LENGTH has not been set yet for type units if we're |
7041 | using .gdb_index. */ | |
4057dfde | 7042 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7043 | |
7044 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7045 | sig_type->type_offset_in_section = |
7046 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7047 | |
7048 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7049 | } |
7050 | else | |
7051 | { | |
ed2dc618 SM |
7052 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7053 | &cu->header, section, | |
4bdcc0c1 | 7054 | abbrev_section, |
43988095 JK |
7055 | info_ptr, |
7056 | rcuh_kind::COMPILE); | |
dee91e82 | 7057 | |
9c541725 | 7058 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7059 | if (this_cu->length == 0) |
7060 | this_cu->length = cu->header.get_length (); | |
7061 | else | |
7062 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7063 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7064 | } |
7065 | } | |
10b3939b | 7066 | |
6caca83c | 7067 | /* Skip dummy compilation units. */ |
dee91e82 | 7068 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7069 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7070 | { |
7071 | dummy_p = true; | |
7072 | return; | |
7073 | } | |
6caca83c | 7074 | |
433df2d4 DE |
7075 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7076 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7077 | done. */ |
f4dc4d17 | 7078 | if (abbrev_table != NULL) |
685af9cd TT |
7079 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7080 | else | |
f4dc4d17 | 7081 | { |
c0ab21c2 | 7082 | m_abbrev_table_holder |
86de1d91 TT |
7083 | = abbrev_table::read (objfile, abbrev_section, |
7084 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7085 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7086 | } |
af703f96 | 7087 | |
dee91e82 | 7088 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7089 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7090 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7091 | |
58f0c718 | 7092 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7093 | { |
7094 | dummy_p = true; | |
7095 | return; | |
7096 | } | |
58f0c718 | 7097 | |
b0c7bfa9 | 7098 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7099 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7100 | table from the DWO file and pass the ownership over to us. It will be | |
7101 | referenced from READER, so we must make sure to free it after we're done | |
7102 | with READER. | |
7103 | ||
b0c7bfa9 DE |
7104 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7105 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7106 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7107 | if (dwo_name != nullptr) |
3019eac3 | 7108 | { |
3019eac3 | 7109 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7110 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7111 | |
3e225074 | 7112 | if (comp_unit_die->has_children) |
6a506a2d | 7113 | { |
b98664d3 | 7114 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7115 | " has children (offset %s) [in module %s]"), |
7116 | sect_offset_str (this_cu->sect_off), | |
7117 | bfd_get_filename (abfd)); | |
6a506a2d | 7118 | } |
4ab09049 | 7119 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7120 | if (dwo_unit != NULL) |
3019eac3 | 7121 | { |
4ab09049 | 7122 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7123 | comp_unit_die, NULL, |
c0ab21c2 | 7124 | this, &info_ptr, |
3e225074 | 7125 | &dwo_comp_unit_die, |
c0ab21c2 | 7126 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7127 | { |
7128 | /* Dummy die. */ | |
c0ab21c2 | 7129 | dummy_p = true; |
6a506a2d DE |
7130 | return; |
7131 | } | |
7132 | comp_unit_die = dwo_comp_unit_die; | |
7133 | } | |
7134 | else | |
7135 | { | |
7136 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7137 | the stub. A complaint has already been logged. There's | |
7138 | not much more we can do except pass on the stub DIE to | |
7139 | die_reader_func. We don't want to throw an error on bad | |
7140 | debug info. */ | |
3019eac3 DE |
7141 | } |
7142 | } | |
c0ab21c2 | 7143 | } |
3019eac3 | 7144 | |
6751ebae TT |
7145 | void |
7146 | cutu_reader::keep () | |
c0ab21c2 | 7147 | { |
b0c7bfa9 | 7148 | /* Done, clean up. */ |
6751ebae TT |
7149 | gdb_assert (!dummy_p); |
7150 | if (m_new_cu != NULL) | |
348e048f | 7151 | { |
e3beb21d SM |
7152 | /* We know that m_this_cu->cu is set, since we are in the process of |
7153 | parsing the CU. */ | |
7154 | gdb_assert (m_this_cu->cu != nullptr); | |
7155 | dwarf2_per_objfile *dwarf2_per_objfile = m_this_cu->cu->per_objfile; | |
7156 | ||
fcd3b13d | 7157 | /* Link this CU into read_in_chain. */ |
5989a64e SM |
7158 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->per_bfd->read_in_chain; |
7159 | dwarf2_per_objfile->per_bfd->read_in_chain = m_this_cu; | |
fcd3b13d | 7160 | /* The chain owns it now. */ |
c0ab21c2 | 7161 | m_new_cu.release (); |
348e048f | 7162 | } |
dee91e82 DE |
7163 | } |
7164 | ||
18a8505e AT |
7165 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7166 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7167 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7168 | |
7169 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7170 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7171 | |
7172 | We fill in THIS_CU->length. | |
7173 | ||
dee91e82 | 7174 | THIS_CU->cu is always freed when done. |
3019eac3 | 7175 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7176 | to care whether it refers to the "main" CU or the DWO CU. |
7177 | ||
7178 | When parent_cu is passed, it is used to provide a default value for | |
7179 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7180 | |
ab432490 SM |
7181 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
7182 | dwarf2_per_objfile *dwarf2_per_objfile, | |
c0ab21c2 TT |
7183 | struct dwarf2_cu *parent_cu, |
7184 | struct dwo_file *dwo_file) | |
7185 | : die_reader_specs {}, | |
7186 | m_this_cu (this_cu) | |
dee91e82 DE |
7187 | { |
7188 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 7189 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7190 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7191 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7192 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7193 | |
b4f54984 | 7194 | if (dwarf_die_debug) |
9d8780f0 | 7195 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7196 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7197 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7198 | |
dee91e82 DE |
7199 | gdb_assert (this_cu->cu == NULL); |
7200 | ||
33e80786 DE |
7201 | abbrev_section = (dwo_file != NULL |
7202 | ? &dwo_file->sections.abbrev | |
7203 | : get_abbrev_section_for_cu (this_cu)); | |
7204 | ||
dee91e82 | 7205 | /* This is cheap if the section is already read in. */ |
96b79293 | 7206 | section->read (objfile); |
dee91e82 | 7207 | |
9e021579 | 7208 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
dee91e82 | 7209 | |
9c541725 | 7210 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7211 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7212 | &m_new_cu->header, section, |
4bdcc0c1 | 7213 | abbrev_section, info_ptr, |
43988095 JK |
7214 | (this_cu->is_debug_types |
7215 | ? rcuh_kind::TYPE | |
7216 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7217 | |
18a8505e AT |
7218 | if (parent_cu != nullptr) |
7219 | { | |
c0ab21c2 TT |
7220 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7221 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7222 | } |
4057dfde | 7223 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7224 | |
7225 | /* Skip dummy compilation units. */ | |
7226 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7227 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7228 | { |
7229 | dummy_p = true; | |
7230 | return; | |
7231 | } | |
72bf9492 | 7232 | |
c0ab21c2 | 7233 | m_abbrev_table_holder |
86de1d91 TT |
7234 | = abbrev_table::read (objfile, abbrev_section, |
7235 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7236 | |
c0ab21c2 TT |
7237 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7238 | m_abbrev_table_holder.get ()); | |
3e225074 | 7239 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7240 | } |
7241 | ||
0018ea6f DE |
7242 | \f |
7243 | /* Type Unit Groups. | |
dee91e82 | 7244 | |
0018ea6f DE |
7245 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7246 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7247 | so that all types coming from the same compilation (.o file) are grouped | |
7248 | together. A future step could be to put the types in the same symtab as | |
7249 | the CU the types ultimately came from. */ | |
ff013f42 | 7250 | |
f4dc4d17 DE |
7251 | static hashval_t |
7252 | hash_type_unit_group (const void *item) | |
7253 | { | |
9a3c8263 SM |
7254 | const struct type_unit_group *tu_group |
7255 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7256 | |
094b34ac | 7257 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7258 | } |
348e048f DE |
7259 | |
7260 | static int | |
f4dc4d17 | 7261 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7262 | { |
9a3c8263 SM |
7263 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7264 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7265 | |
094b34ac | 7266 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7267 | } |
348e048f | 7268 | |
f4dc4d17 DE |
7269 | /* Allocate a hash table for type unit groups. */ |
7270 | ||
eaa5fa8b | 7271 | static htab_up |
298e9637 | 7272 | allocate_type_unit_groups_table () |
f4dc4d17 | 7273 | { |
eaa5fa8b TT |
7274 | return htab_up (htab_create_alloc (3, |
7275 | hash_type_unit_group, | |
7276 | eq_type_unit_group, | |
7277 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7278 | } |
dee91e82 | 7279 | |
f4dc4d17 DE |
7280 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7281 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7282 | of any one psymtab grow too big. */ | |
7283 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7284 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7285 | |
094b34ac | 7286 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7287 | Create the type_unit_group object used to hold one or more TUs. */ |
7288 | ||
7289 | static struct type_unit_group * | |
094b34ac | 7290 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7291 | { |
5e22e966 | 7292 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
1859c670 | 7293 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
094b34ac | 7294 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7295 | struct type_unit_group *tu_group; |
f4dc4d17 | 7296 | |
5989a64e | 7297 | tu_group = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
f4dc4d17 | 7298 | struct type_unit_group); |
094b34ac | 7299 | per_cu = &tu_group->per_cu; |
1859c670 | 7300 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7301 | |
1859c670 | 7302 | if (per_bfd->using_index) |
094b34ac | 7303 | { |
1859c670 | 7304 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7305 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7306 | } |
7307 | else | |
7308 | { | |
9c541725 | 7309 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7310 | dwarf2_psymtab *pst; |
528e1572 | 7311 | std::string name; |
094b34ac DE |
7312 | |
7313 | /* Give the symtab a useful name for debug purposes. */ | |
7314 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7315 | name = string_printf ("<type_units_%d>", |
7316 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7317 | else |
528e1572 | 7318 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7319 | |
7aa104c4 | 7320 | pst = create_partial_symtab (per_cu, dwarf2_per_objfile, name.c_str ()); |
6d94535f | 7321 | pst->anonymous = true; |
094b34ac | 7322 | } |
f4dc4d17 | 7323 | |
094b34ac | 7324 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7325 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7326 | |
7327 | return tu_group; | |
7328 | } | |
7329 | ||
094b34ac DE |
7330 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7331 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7332 | |
7333 | static struct type_unit_group * | |
ff39bb5e | 7334 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7335 | { |
5e22e966 | 7336 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
5989a64e | 7337 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
f4dc4d17 DE |
7338 | struct type_unit_group *tu_group; |
7339 | void **slot; | |
7340 | unsigned int line_offset; | |
7341 | struct type_unit_group type_unit_group_for_lookup; | |
7342 | ||
5989a64e SM |
7343 | if (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL) |
7344 | dwarf2_per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7345 | |
7346 | /* Do we need to create a new group, or can we use an existing one? */ | |
7347 | ||
7348 | if (stmt_list) | |
7349 | { | |
7350 | line_offset = DW_UNSND (stmt_list); | |
7351 | ++tu_stats->nr_symtab_sharers; | |
7352 | } | |
7353 | else | |
7354 | { | |
7355 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7356 | We can do various things here like create one group per TU or | |
7357 | spread them over multiple groups to split up the expansion work. | |
7358 | To avoid worst case scenarios (too many groups or too large groups) | |
7359 | we, umm, group them in bunches. */ | |
7360 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7361 | | (tu_stats->nr_stmt_less_type_units | |
7362 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7363 | ++tu_stats->nr_stmt_less_type_units; | |
7364 | } | |
7365 | ||
094b34ac | 7366 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7367 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
5989a64e | 7368 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7369 | &type_unit_group_for_lookup, INSERT); |
7370 | if (*slot != NULL) | |
7371 | { | |
9a3c8263 | 7372 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7373 | gdb_assert (tu_group != NULL); |
7374 | } | |
7375 | else | |
7376 | { | |
9c541725 | 7377 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7378 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7379 | *slot = tu_group; |
7380 | ++tu_stats->nr_symtabs; | |
7381 | } | |
7382 | ||
7383 | return tu_group; | |
7384 | } | |
0018ea6f DE |
7385 | \f |
7386 | /* Partial symbol tables. */ | |
7387 | ||
7388 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7389 | ||
7390 | The caller must fill in the following details: | |
7391 | dirname, textlow, texthigh. */ | |
7392 | ||
891813be | 7393 | static dwarf2_psymtab * |
7aa104c4 SM |
7394 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7395 | dwarf2_per_objfile *per_objfile, | |
7396 | const char *name) | |
0018ea6f | 7397 | { |
7aa104c4 | 7398 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7399 | dwarf2_psymtab *pst; |
0018ea6f | 7400 | |
9f4e76a4 | 7401 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7402 | |
6d94535f | 7403 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7404 | |
7405 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7406 | per_cu->v.psymtab = pst; |
7407 | ||
7408 | return pst; | |
7409 | } | |
7410 | ||
c0ab21c2 | 7411 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7412 | |
7413 | static void | |
7414 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7415 | const gdb_byte *info_ptr, |
0018ea6f | 7416 | struct die_info *comp_unit_die, |
c0ab21c2 | 7417 | enum language pretend_language) |
0018ea6f DE |
7418 | { |
7419 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7420 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7421 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7422 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7423 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7424 | CORE_ADDR baseaddr; |
7425 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7426 | dwarf2_psymtab *pst; |
3a2b436a | 7427 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7428 | const char *filename; |
0018ea6f | 7429 | |
0018ea6f DE |
7430 | gdb_assert (! per_cu->is_debug_types); |
7431 | ||
c0ab21c2 | 7432 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7433 | |
0018ea6f | 7434 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7435 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7436 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7437 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7438 | if (filename == NULL) | |
0018ea6f | 7439 | filename = ""; |
2e927613 TV |
7440 | else if (strcmp (filename, artificial) == 0) |
7441 | { | |
7442 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7443 | sect_offset_str (per_cu->sect_off), |
7444 | (char *) NULL)); | |
2e927613 TV |
7445 | filename = debug_filename.get (); |
7446 | } | |
0018ea6f | 7447 | |
7aa104c4 | 7448 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7449 | |
7450 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7451 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7452 | |
b3b3bada | 7453 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7454 | |
7455 | dwarf2_find_base_address (comp_unit_die, cu); | |
7456 | ||
7457 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7458 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7459 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7460 | &best_highpc, cu, pst); | |
7461 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7462 | { |
7463 | CORE_ADDR low | |
7464 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7465 | - baseaddr); | |
7466 | CORE_ADDR high | |
7467 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7468 | - baseaddr - 1); | |
7469 | /* Store the contiguous range if it is not empty; it can be | |
7470 | empty for CUs with no code. */ | |
d320c2b5 TT |
7471 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7472 | low, high, pst); | |
79748972 | 7473 | } |
0018ea6f DE |
7474 | |
7475 | /* Check if comp unit has_children. | |
7476 | If so, read the rest of the partial symbols from this comp unit. | |
7477 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7478 | if (comp_unit_die->has_children) |
0018ea6f DE |
7479 | { |
7480 | struct partial_die_info *first_die; | |
7481 | CORE_ADDR lowpc, highpc; | |
7482 | ||
7483 | lowpc = ((CORE_ADDR) -1); | |
7484 | highpc = ((CORE_ADDR) 0); | |
7485 | ||
7486 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7487 | ||
7488 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7489 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7490 | |
7491 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7492 | complaints from `maint check'. */ | |
7493 | if (lowpc == ((CORE_ADDR) -1)) | |
7494 | lowpc = highpc; | |
7495 | ||
7496 | /* If the compilation unit didn't have an explicit address range, | |
7497 | then use the information extracted from its child dies. */ | |
e385593e | 7498 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7499 | { |
7500 | best_lowpc = lowpc; | |
7501 | best_highpc = highpc; | |
7502 | } | |
7503 | } | |
4ae976d1 | 7504 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7505 | best_lowpc + baseaddr) |
7506 | - baseaddr); | |
4ae976d1 | 7507 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7508 | best_highpc + baseaddr) |
7509 | - baseaddr); | |
0018ea6f | 7510 | |
8763cede | 7511 | end_psymtab_common (objfile, pst); |
0018ea6f | 7512 | |
ae640021 | 7513 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7514 | { |
7515 | int i; | |
ae640021 | 7516 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7517 | |
7518 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7519 | post-pass. */ | |
7520 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7521 | pst->dependencies |
7522 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7523 | for (i = 0; i < len; ++i) |
7524 | { | |
7525 | pst->dependencies[i] | |
7526 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7527 | } | |
0018ea6f | 7528 | |
ae640021 | 7529 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7530 | } |
7531 | ||
7532 | /* Get the list of files included in the current compilation unit, | |
7533 | and build a psymtab for each of them. */ | |
7534 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7535 | ||
b4f54984 | 7536 | if (dwarf_read_debug) |
b926417a TT |
7537 | fprintf_unfiltered (gdb_stdlog, |
7538 | "Psymtab for %s unit @%s: %s - %s" | |
7539 | ", %d global, %d static syms\n", | |
7540 | per_cu->is_debug_types ? "type" : "comp", | |
7541 | sect_offset_str (per_cu->sect_off), | |
7542 | paddress (gdbarch, pst->text_low (objfile)), | |
7543 | paddress (gdbarch, pst->text_high (objfile)), | |
7544 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7545 | } |
7546 | ||
7547 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7548 | Process compilation unit THIS_CU for a psymtab. */ | |
7549 | ||
7550 | static void | |
ab432490 SM |
7551 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7552 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7553 | bool want_partial_unit, |
b93601f3 | 7554 | enum language pretend_language) |
0018ea6f DE |
7555 | { |
7556 | /* If this compilation unit was already read in, free the | |
7557 | cached copy in order to read it in again. This is | |
7558 | necessary because we skipped some symbols when we first | |
7559 | read in the compilation unit (see load_partial_dies). | |
7560 | This problem could be avoided, but the benefit is unclear. */ | |
7561 | if (this_cu->cu != NULL) | |
120ce1b5 | 7562 | free_one_cached_comp_unit (this_cu, per_objfile); |
0018ea6f | 7563 | |
ab432490 | 7564 | cutu_reader reader (this_cu, per_objfile, NULL, 0, false); |
c0ab21c2 | 7565 | |
58990295 TV |
7566 | switch (reader.comp_unit_die->tag) |
7567 | { | |
7568 | case DW_TAG_compile_unit: | |
7569 | this_cu->unit_type = DW_UT_compile; | |
7570 | break; | |
7571 | case DW_TAG_partial_unit: | |
7572 | this_cu->unit_type = DW_UT_partial; | |
7573 | break; | |
7574 | default: | |
7575 | abort (); | |
7576 | } | |
7577 | ||
c0ab21c2 | 7578 | if (reader.dummy_p) |
f1902523 | 7579 | { |
c0ab21c2 | 7580 | /* Nothing. */ |
f1902523 | 7581 | } |
c0ab21c2 | 7582 | else if (this_cu->is_debug_types) |
3e225074 TT |
7583 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7584 | reader.comp_unit_die); | |
135f5437 TT |
7585 | else if (want_partial_unit |
7586 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7587 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7588 | reader.comp_unit_die, | |
c0ab21c2 | 7589 | pretend_language); |
0018ea6f | 7590 | |
58990295 TV |
7591 | this_cu->lang = this_cu->cu->language; |
7592 | ||
0018ea6f | 7593 | /* Age out any secondary CUs. */ |
f6e649dd | 7594 | age_cached_comp_units (per_objfile); |
0018ea6f | 7595 | } |
f4dc4d17 DE |
7596 | |
7597 | /* Reader function for build_type_psymtabs. */ | |
7598 | ||
7599 | static void | |
7600 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7601 | const gdb_byte *info_ptr, |
3e225074 | 7602 | struct die_info *type_unit_die) |
f4dc4d17 | 7603 | { |
5e22e966 | 7604 | struct dwarf2_per_objfile *dwarf2_per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7605 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7606 | struct dwarf2_cu *cu = reader->cu; | |
7607 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7608 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7609 | struct type_unit_group *tu_group; |
7610 | struct attribute *attr; | |
7611 | struct partial_die_info *first_die; | |
7612 | CORE_ADDR lowpc, highpc; | |
891813be | 7613 | dwarf2_psymtab *pst; |
f4dc4d17 | 7614 | |
0186c6a7 DE |
7615 | gdb_assert (per_cu->is_debug_types); |
7616 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7617 | |
3e225074 | 7618 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7619 | return; |
7620 | ||
052c8bb8 | 7621 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7622 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7623 | |
df07e2c7 | 7624 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7625 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7626 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7627 | |
7628 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
7aa104c4 | 7629 | pst = create_partial_symtab (per_cu, dwarf2_per_objfile, ""); |
6d94535f | 7630 | pst->anonymous = true; |
f4dc4d17 DE |
7631 | |
7632 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7633 | ||
7634 | lowpc = (CORE_ADDR) -1; | |
7635 | highpc = (CORE_ADDR) 0; | |
7636 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7637 | ||
8763cede | 7638 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7639 | } |
7640 | ||
73051182 DE |
7641 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7642 | ||
7643 | struct tu_abbrev_offset | |
7644 | { | |
b2bdb8cf SM |
7645 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7646 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7647 | {} | |
7648 | ||
7649 | signatured_type *sig_type; | |
73051182 DE |
7650 | sect_offset abbrev_offset; |
7651 | }; | |
7652 | ||
484cf504 | 7653 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7654 | |
484cf504 TT |
7655 | static bool |
7656 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7657 | const struct tu_abbrev_offset &b) | |
73051182 | 7658 | { |
484cf504 | 7659 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7660 | } |
7661 | ||
7662 | /* Efficiently read all the type units. | |
7663 | This does the bulk of the work for build_type_psymtabs. | |
7664 | ||
7665 | The efficiency is because we sort TUs by the abbrev table they use and | |
7666 | only read each abbrev table once. In one program there are 200K TUs | |
7667 | sharing 8K abbrev tables. | |
7668 | ||
7669 | The main purpose of this function is to support building the | |
5989a64e | 7670 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7671 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7672 | can collapse the search space by grouping them by stmt_list. | |
7673 | The savings can be significant, in the same program from above the 200K TUs | |
7674 | share 8K stmt_list tables. | |
7675 | ||
7676 | FUNC is expected to call get_type_unit_group, which will create the | |
7677 | struct type_unit_group if necessary and add it to | |
5989a64e | 7678 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7679 | |
7680 | static void | |
ed2dc618 | 7681 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7682 | { |
5989a64e | 7683 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
685af9cd | 7684 | abbrev_table_up abbrev_table; |
73051182 | 7685 | sect_offset abbrev_offset; |
73051182 DE |
7686 | |
7687 | /* It's up to the caller to not call us multiple times. */ | |
5989a64e | 7688 | gdb_assert (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7689 | |
5989a64e | 7690 | if (dwarf2_per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7691 | return; |
7692 | ||
7693 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7694 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7695 | read each abbrev table in. | |
7696 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7697 | This is simpler and efficient enough for now. | |
7698 | ||
7699 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7700 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7701 | stmt_list value too so in practice this should work well. | |
7702 | ||
7703 | The basic algorithm here is: | |
7704 | ||
7705 | sort TUs by abbrev table | |
7706 | for each TU with same abbrev table: | |
7707 | read abbrev table if first user | |
7708 | read TU top level DIE | |
7709 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7710 | call FUNC */ | |
7711 | ||
b4f54984 | 7712 | if (dwarf_read_debug) |
73051182 DE |
7713 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7714 | ||
7715 | /* Sort in a separate table to maintain the order of all_type_units | |
7716 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7717 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
5989a64e | 7718 | sorted_by_abbrev.reserve (dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7719 | |
5989a64e | 7720 | for (signatured_type *sig_type : dwarf2_per_objfile->per_bfd->all_type_units) |
b2bdb8cf SM |
7721 | sorted_by_abbrev.emplace_back |
7722 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7723 | sig_type->per_cu.section, | |
7724 | sig_type->per_cu.sect_off)); | |
73051182 | 7725 | |
484cf504 TT |
7726 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7727 | sort_tu_by_abbrev_offset); | |
73051182 | 7728 | |
9c541725 | 7729 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7730 | |
b2bdb8cf | 7731 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7732 | { |
73051182 DE |
7733 | /* Switch to the next abbrev table if necessary. */ |
7734 | if (abbrev_table == NULL | |
b2bdb8cf | 7735 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7736 | { |
b2bdb8cf | 7737 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7738 | abbrev_table = |
86de1d91 | 7739 | abbrev_table::read (dwarf2_per_objfile->objfile, |
5989a64e | 7740 | &dwarf2_per_objfile->per_bfd->abbrev, |
86de1d91 | 7741 | abbrev_offset); |
73051182 DE |
7742 | ++tu_stats->nr_uniq_abbrev_tables; |
7743 | } | |
7744 | ||
ab432490 SM |
7745 | cutu_reader reader (&tu.sig_type->per_cu, dwarf2_per_objfile, |
7746 | abbrev_table.get (), 0, false); | |
c0ab21c2 TT |
7747 | if (!reader.dummy_p) |
7748 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7749 | reader.comp_unit_die); |
73051182 | 7750 | } |
6aa5f3a6 | 7751 | } |
73051182 | 7752 | |
6aa5f3a6 DE |
7753 | /* Print collected type unit statistics. */ |
7754 | ||
7755 | static void | |
ed2dc618 | 7756 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 | 7757 | { |
5989a64e | 7758 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7759 | |
7760 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7761 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
5989a64e | 7762 | dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7763 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7764 | tu_stats->nr_uniq_abbrev_tables); | |
7765 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7766 | tu_stats->nr_symtabs); | |
7767 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7768 | tu_stats->nr_symtab_sharers); | |
7769 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7770 | tu_stats->nr_stmt_less_type_units); | |
7771 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7772 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7773 | } |
7774 | ||
f4dc4d17 DE |
7775 | /* Traversal function for build_type_psymtabs. */ |
7776 | ||
7777 | static int | |
7778 | build_type_psymtab_dependencies (void **slot, void *info) | |
7779 | { | |
ed2dc618 SM |
7780 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7781 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7782 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7783 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7784 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7785 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7786 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7787 | int i; |
7788 | ||
7789 | gdb_assert (len > 0); | |
197400e8 | 7790 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7791 | |
7792 | pst->number_of_dependencies = len; | |
a9342b62 | 7793 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7794 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7795 | { |
df07e2c7 | 7796 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7797 | gdb_assert (iter->per_cu.is_debug_types); |
7798 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7799 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7800 | } |
7801 | ||
df07e2c7 AB |
7802 | delete tu_group->tus; |
7803 | tu_group->tus = nullptr; | |
348e048f DE |
7804 | |
7805 | return 1; | |
7806 | } | |
7807 | ||
7808 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7809 | Build partial symbol tables for the .debug_types comp-units. */ | |
7810 | ||
7811 | static void | |
ed2dc618 | 7812 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7813 | { |
ed2dc618 | 7814 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7815 | return; |
7816 | ||
ed2dc618 | 7817 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7818 | } |
f4dc4d17 | 7819 | |
6aa5f3a6 DE |
7820 | /* Traversal function for process_skeletonless_type_unit. |
7821 | Read a TU in a DWO file and build partial symbols for it. */ | |
7822 | ||
7823 | static int | |
7824 | process_skeletonless_type_unit (void **slot, void *info) | |
7825 | { | |
7826 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7827 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7828 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7829 | struct signatured_type find_entry, *entry; |
7830 | ||
7831 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7832 | ||
5989a64e SM |
7833 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
7834 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7835 | |
7836 | find_entry.signature = dwo_unit->signature; | |
5989a64e | 7837 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7838 | &find_entry, INSERT); |
6aa5f3a6 DE |
7839 | /* If we've already seen this type there's nothing to do. What's happening |
7840 | is we're doing our own version of comdat-folding here. */ | |
7841 | if (*slot != NULL) | |
7842 | return 1; | |
7843 | ||
7844 | /* This does the job that create_all_type_units would have done for | |
7845 | this TU. */ | |
ed2dc618 SM |
7846 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7847 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7848 | *slot = entry; |
7849 | ||
7850 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
ab432490 | 7851 | cutu_reader reader (&entry->per_cu, dwarf2_per_objfile, NULL, 0, false); |
c0ab21c2 TT |
7852 | if (!reader.dummy_p) |
7853 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7854 | reader.comp_unit_die); |
6aa5f3a6 DE |
7855 | |
7856 | return 1; | |
7857 | } | |
7858 | ||
7859 | /* Traversal function for process_skeletonless_type_units. */ | |
7860 | ||
7861 | static int | |
7862 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7863 | { | |
7864 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7865 | ||
7866 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7867 | htab_traverse_noresize (dwo_file->tus.get (), |
7868 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7869 | |
7870 | return 1; | |
7871 | } | |
7872 | ||
7873 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7874 | This is needed in case a TU was emitted without its skeleton. | |
7875 | Note: This can't be done until we know what all the DWO files are. */ | |
7876 | ||
7877 | static void | |
ed2dc618 | 7878 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7879 | { |
7880 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7881 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
5989a64e | 7882 | && dwarf2_per_objfile->per_bfd->dwo_files != NULL) |
6aa5f3a6 | 7883 | { |
5989a64e | 7884 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7885 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7886 | dwarf2_per_objfile); |
6aa5f3a6 | 7887 | } |
348e048f DE |
7888 | } |
7889 | ||
ed2dc618 | 7890 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7891 | |
7892 | static void | |
ed2dc618 | 7893 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7894 | { |
5989a64e | 7895 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
95554aad | 7896 | { |
891813be | 7897 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7898 | |
36586728 TT |
7899 | if (pst == NULL) |
7900 | continue; | |
7901 | ||
b76e467d | 7902 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7903 | { |
7904 | /* Set the 'user' field only if it is not already set. */ | |
7905 | if (pst->dependencies[j]->user == NULL) | |
7906 | pst->dependencies[j]->user = pst; | |
7907 | } | |
7908 | } | |
7909 | } | |
7910 | ||
93311388 DE |
7911 | /* Build the partial symbol table by doing a quick pass through the |
7912 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7913 | |
93311388 | 7914 | static void |
ed2dc618 | 7915 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7916 | { |
ed2dc618 | 7917 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7918 | |
b4f54984 | 7919 | if (dwarf_read_debug) |
45cfd468 DE |
7920 | { |
7921 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7922 | objfile_name (objfile)); |
45cfd468 DE |
7923 | } |
7924 | ||
76935768 | 7925 | scoped_restore restore_reading_psyms |
5989a64e | 7926 | = make_scoped_restore (&dwarf2_per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 7927 | true); |
98bfdba5 | 7928 | |
5989a64e | 7929 | dwarf2_per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 7930 | |
93311388 DE |
7931 | /* Any cached compilation units will be linked by the per-objfile |
7932 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7933 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7934 | |
ed2dc618 | 7935 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7936 | |
ed2dc618 | 7937 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7938 | |
60606b2c TT |
7939 | /* Create a temporary address map on a temporary obstack. We later |
7940 | copy this to the final obstack. */ | |
8268c778 | 7941 | auto_obstack temp_obstack; |
791afaa2 TT |
7942 | |
7943 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7944 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7945 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7946 | |
5989a64e | 7947 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
7948 | { |
7949 | if (per_cu->v.psymtab != NULL) | |
7950 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7951 | continue; | |
ab432490 SM |
7952 | process_psymtab_comp_unit (per_cu, dwarf2_per_objfile, false, |
7953 | language_minimal); | |
3d5afab3 | 7954 | } |
ff013f42 | 7955 | |
6aa5f3a6 | 7956 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7957 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7958 | |
7959 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5989a64e | 7960 | if (dwarf2_per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 7961 | { |
5989a64e | 7962 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
ed2dc618 | 7963 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7964 | } |
7965 | ||
b4f54984 | 7966 | if (dwarf_read_debug) |
ed2dc618 | 7967 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7968 | |
ed2dc618 | 7969 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7970 | |
d320c2b5 TT |
7971 | objfile->partial_symtabs->psymtabs_addrmap |
7972 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7973 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7974 | /* At this point we want to keep the address map. */ |
7975 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7976 | |
b4f54984 | 7977 | if (dwarf_read_debug) |
45cfd468 | 7978 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7979 | objfile_name (objfile)); |
ae038cb0 DJ |
7980 | } |
7981 | ||
dee91e82 DE |
7982 | /* Load the partial DIEs for a secondary CU into memory. |
7983 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7984 | |
dee91e82 | 7985 | static void |
ab432490 SM |
7986 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
7987 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 7988 | { |
ab432490 | 7989 | cutu_reader reader (this_cu, per_objfile, NULL, 1, false); |
c0ab21c2 TT |
7990 | |
7991 | if (!reader.dummy_p) | |
7992 | { | |
7993 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7994 | language_minimal); | |
7995 | ||
7996 | /* Check if comp unit has_children. | |
7997 | If so, read the rest of the partial symbols from this comp unit. | |
7998 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7999 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8000 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8001 | |
8002 | reader.keep (); | |
c0ab21c2 | 8003 | } |
ae038cb0 DJ |
8004 | } |
8005 | ||
ae038cb0 | 8006 | static void |
ed2dc618 | 8007 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8008 | struct dwarf2_section_info *section, |
f1902523 | 8009 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8010 | unsigned int is_dwz) |
ae038cb0 | 8011 | { |
d521ce57 | 8012 | const gdb_byte *info_ptr; |
ed2dc618 | 8013 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8014 | |
b4f54984 | 8015 | if (dwarf_read_debug) |
bf6af496 | 8016 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8017 | section->get_name (), |
8018 | section->get_file_name ()); | |
bf6af496 | 8019 | |
96b79293 | 8020 | section->read (objfile); |
ae038cb0 | 8021 | |
36586728 | 8022 | info_ptr = section->buffer; |
6e70227d | 8023 | |
36586728 | 8024 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8025 | { |
ae038cb0 | 8026 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8027 | |
9c541725 | 8028 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8029 | |
f1902523 | 8030 | comp_unit_head cu_header; |
ed2dc618 SM |
8031 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8032 | abbrev_section, info_ptr, | |
8033 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8034 | |
8035 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8036 | if (cu_header.unit_type != DW_UT_type) |
5989a64e | 8037 | this_cu = dwarf2_per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8038 | else |
8039 | { | |
5989a64e | 8040 | auto sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8041 | sig_type->signature = cu_header.signature; |
8042 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8043 | this_cu = &sig_type->per_cu; | |
8044 | } | |
8045 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8046 | this_cu->sect_off = sect_off; |
f1902523 | 8047 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8048 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8049 | this_cu->section = section; |
ae038cb0 | 8050 | |
5989a64e | 8051 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8052 | |
8053 | info_ptr = info_ptr + this_cu->length; | |
8054 | } | |
36586728 TT |
8055 | } |
8056 | ||
8057 | /* Create a list of all compilation units in OBJFILE. | |
8058 | This is only done for -readnow and building partial symtabs. */ | |
8059 | ||
8060 | static void | |
ed2dc618 | 8061 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8062 | { |
5989a64e SM |
8063 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units.empty ()); |
8064 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->per_bfd->info, | |
8065 | &dwarf2_per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8066 | |
c3699833 | 8067 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 8068 | if (dwz != NULL) |
ed2dc618 | 8069 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8070 | 1); |
c906108c SS |
8071 | } |
8072 | ||
5734ee8b | 8073 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8074 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8075 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8076 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8077 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8078 | |
72bf9492 DJ |
8079 | static void |
8080 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8081 | CORE_ADDR *highpc, int set_addrmap, |
8082 | struct dwarf2_cu *cu) | |
c906108c | 8083 | { |
72bf9492 | 8084 | struct partial_die_info *pdi; |
c906108c | 8085 | |
91c24f0a DC |
8086 | /* Now, march along the PDI's, descending into ones which have |
8087 | interesting children but skipping the children of the other ones, | |
8088 | until we reach the end of the compilation unit. */ | |
c906108c | 8089 | |
72bf9492 | 8090 | pdi = first_die; |
91c24f0a | 8091 | |
72bf9492 DJ |
8092 | while (pdi != NULL) |
8093 | { | |
52356b79 | 8094 | pdi->fixup (cu); |
c906108c | 8095 | |
f55ee35c | 8096 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8097 | children, so we need to look at them. Ditto for anonymous |
8098 | enums. */ | |
933c6fe4 | 8099 | |
72bf9492 | 8100 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8101 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8102 | || pdi->tag == DW_TAG_imported_unit |
8103 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8104 | { |
72bf9492 | 8105 | switch (pdi->tag) |
c906108c SS |
8106 | { |
8107 | case DW_TAG_subprogram: | |
b1dc1806 | 8108 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8109 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8110 | break; |
72929c62 | 8111 | case DW_TAG_constant: |
c906108c SS |
8112 | case DW_TAG_variable: |
8113 | case DW_TAG_typedef: | |
91c24f0a | 8114 | case DW_TAG_union_type: |
317d2668 TV |
8115 | if (!pdi->is_declaration |
8116 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8117 | { |
72bf9492 | 8118 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8119 | } |
8120 | break; | |
c906108c | 8121 | case DW_TAG_class_type: |
680b30c7 | 8122 | case DW_TAG_interface_type: |
c906108c | 8123 | case DW_TAG_structure_type: |
72bf9492 | 8124 | if (!pdi->is_declaration) |
c906108c | 8125 | { |
72bf9492 | 8126 | add_partial_symbol (pdi, cu); |
c906108c | 8127 | } |
b7fee5a3 KS |
8128 | if ((cu->language == language_rust |
8129 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8130 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8131 | set_addrmap, cu); | |
c906108c | 8132 | break; |
91c24f0a | 8133 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8134 | if (!pdi->is_declaration) |
8135 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8136 | break; |
8137 | case DW_TAG_base_type: | |
a02abb62 | 8138 | case DW_TAG_subrange_type: |
c906108c | 8139 | /* File scope base type definitions are added to the partial |
c5aa993b | 8140 | symbol table. */ |
72bf9492 | 8141 | add_partial_symbol (pdi, cu); |
c906108c | 8142 | break; |
d9fa45fe | 8143 | case DW_TAG_namespace: |
cdc07690 | 8144 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8145 | break; |
5d7cb8df | 8146 | case DW_TAG_module: |
59c35742 AB |
8147 | if (!pdi->is_declaration) |
8148 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8149 | break; |
95554aad TT |
8150 | case DW_TAG_imported_unit: |
8151 | { | |
8152 | struct dwarf2_per_cu_data *per_cu; | |
8153 | ||
f4dc4d17 DE |
8154 | /* For now we don't handle imported units in type units. */ |
8155 | if (cu->per_cu->is_debug_types) | |
8156 | { | |
8157 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8158 | " supported in type units [in module %s]"), | |
5e22e966 | 8159 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8160 | } |
8161 | ||
e3b94546 | 8162 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8163 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8164 | |
8165 | /* Go read the partial unit, if needed. */ | |
8166 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8167 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8168 | cu->language); | |
95554aad | 8169 | |
ae640021 | 8170 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8171 | } |
8172 | break; | |
74921315 KS |
8173 | case DW_TAG_imported_declaration: |
8174 | add_partial_symbol (pdi, cu); | |
8175 | break; | |
c906108c SS |
8176 | default: |
8177 | break; | |
8178 | } | |
8179 | } | |
8180 | ||
72bf9492 DJ |
8181 | /* If the die has a sibling, skip to the sibling. */ |
8182 | ||
8183 | pdi = pdi->die_sibling; | |
8184 | } | |
8185 | } | |
8186 | ||
8187 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8188 | |
72bf9492 | 8189 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8190 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8191 | Enumerators are an exception; they use the scope of their parent |
8192 | enumeration type, i.e. the name of the enumeration type is not | |
8193 | prepended to the enumerator. | |
91c24f0a | 8194 | |
72bf9492 DJ |
8195 | There are two complexities. One is DW_AT_specification; in this |
8196 | case "parent" means the parent of the target of the specification, | |
8197 | instead of the direct parent of the DIE. The other is compilers | |
8198 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8199 | the fully qualified name of structure types from their members' | |
8200 | linkage names. This must be done using the DIE's children rather | |
8201 | than the children of any DW_AT_specification target. We only need | |
8202 | to do this for structures at the top level, i.e. if the target of | |
8203 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8204 | have a parent. */ | |
8205 | ||
8206 | /* Compute the scope prefix associated with PDI's parent, in | |
8207 | compilation unit CU. The result will be allocated on CU's | |
8208 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8209 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8210 | static const char * |
72bf9492 DJ |
8211 | partial_die_parent_scope (struct partial_die_info *pdi, |
8212 | struct dwarf2_cu *cu) | |
8213 | { | |
15d034d0 | 8214 | const char *grandparent_scope; |
72bf9492 | 8215 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8216 | |
72bf9492 DJ |
8217 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8218 | then this means the parent of the specification DIE. */ | |
8219 | ||
8220 | real_pdi = pdi; | |
72bf9492 | 8221 | while (real_pdi->has_specification) |
fb816e8b | 8222 | { |
122cf0f2 AB |
8223 | auto res = find_partial_die (real_pdi->spec_offset, |
8224 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8225 | real_pdi = res.pdi; |
8226 | cu = res.cu; | |
8227 | } | |
72bf9492 DJ |
8228 | |
8229 | parent = real_pdi->die_parent; | |
8230 | if (parent == NULL) | |
8231 | return NULL; | |
8232 | ||
8233 | if (parent->scope_set) | |
8234 | return parent->scope; | |
8235 | ||
52356b79 | 8236 | parent->fixup (cu); |
72bf9492 | 8237 | |
10b3939b | 8238 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8239 | |
acebe513 UW |
8240 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8241 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8242 | Work around this problem here. */ | |
8243 | if (cu->language == language_cplus | |
6e70227d | 8244 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8245 | && strcmp (parent->name, "::") == 0 |
8246 | && grandparent_scope == NULL) | |
8247 | { | |
8248 | parent->scope = NULL; | |
8249 | parent->scope_set = 1; | |
8250 | return NULL; | |
8251 | } | |
8252 | ||
0a4b0913 | 8253 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8254 | if (pdi->tag == DW_TAG_enumerator) |
8255 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8256 | parent->scope = grandparent_scope; | |
8257 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8258 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8259 | || parent->tag == DW_TAG_structure_type |
8260 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8261 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8262 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8263 | || parent->tag == DW_TAG_enumeration_type |
8264 | || (cu->language == language_fortran | |
8265 | && parent->tag == DW_TAG_subprogram | |
8266 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8267 | { |
8268 | if (grandparent_scope == NULL) | |
8269 | parent->scope = parent->name; | |
8270 | else | |
3e43a32a MS |
8271 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8272 | grandparent_scope, | |
f55ee35c | 8273 | parent->name, 0, cu); |
72bf9492 | 8274 | } |
72bf9492 DJ |
8275 | else |
8276 | { | |
8277 | /* FIXME drow/2004-04-01: What should we be doing with | |
8278 | function-local names? For partial symbols, we should probably be | |
8279 | ignoring them. */ | |
fa9c3fa0 TT |
8280 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8281 | dwarf_tag_name (parent->tag), | |
8282 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8283 | parent->scope = grandparent_scope; |
c906108c SS |
8284 | } |
8285 | ||
72bf9492 DJ |
8286 | parent->scope_set = 1; |
8287 | return parent->scope; | |
8288 | } | |
8289 | ||
8290 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8291 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8292 | |
43816ebc | 8293 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8294 | partial_die_full_name (struct partial_die_info *pdi, |
8295 | struct dwarf2_cu *cu) | |
8296 | { | |
15d034d0 | 8297 | const char *parent_scope; |
72bf9492 | 8298 | |
98bfdba5 PA |
8299 | /* If this is a template instantiation, we can not work out the |
8300 | template arguments from partial DIEs. So, unfortunately, we have | |
8301 | to go through the full DIEs. At least any work we do building | |
8302 | types here will be reused if full symbols are loaded later. */ | |
8303 | if (pdi->has_template_arguments) | |
8304 | { | |
52356b79 | 8305 | pdi->fixup (cu); |
98bfdba5 PA |
8306 | |
8307 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8308 | { | |
8309 | struct die_info *die; | |
8310 | struct attribute attr; | |
8311 | struct dwarf2_cu *ref_cu = cu; | |
8312 | ||
b64f50a1 | 8313 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8314 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8315 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8316 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8317 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8318 | ||
43816ebc | 8319 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8320 | } |
8321 | } | |
8322 | ||
72bf9492 DJ |
8323 | parent_scope = partial_die_parent_scope (pdi, cu); |
8324 | if (parent_scope == NULL) | |
8325 | return NULL; | |
8326 | else | |
43816ebc TT |
8327 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8328 | pdi->name, 0, cu)); | |
c906108c SS |
8329 | } |
8330 | ||
8331 | static void | |
72bf9492 | 8332 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8333 | { |
5e22e966 | 8334 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 8335 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 8336 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8337 | CORE_ADDR addr = 0; |
15d034d0 | 8338 | const char *actual_name = NULL; |
e142c38c DJ |
8339 | CORE_ADDR baseaddr; |
8340 | ||
b3b3bada | 8341 | baseaddr = objfile->text_section_offset (); |
c906108c | 8342 | |
43816ebc TT |
8343 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8344 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8345 | if (built_actual_name != NULL) |
43816ebc | 8346 | actual_name = built_actual_name.get (); |
63d06c5c | 8347 | |
72bf9492 DJ |
8348 | if (actual_name == NULL) |
8349 | actual_name = pdi->name; | |
8350 | ||
76e288d1 TT |
8351 | partial_symbol psymbol; |
8352 | memset (&psymbol, 0, sizeof (psymbol)); | |
8353 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8354 | psymbol.ginfo.section = -1; | |
8355 | ||
8356 | /* The code below indicates that the psymbol should be installed by | |
8357 | setting this. */ | |
8358 | gdb::optional<psymbol_placement> where; | |
8359 | ||
c906108c SS |
8360 | switch (pdi->tag) |
8361 | { | |
b1dc1806 | 8362 | case DW_TAG_inlined_subroutine: |
c906108c | 8363 | case DW_TAG_subprogram: |
79748972 TT |
8364 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8365 | - baseaddr); | |
0a4b0913 AB |
8366 | if (pdi->is_external |
8367 | || cu->language == language_ada | |
8368 | || (cu->language == language_fortran | |
8369 | && pdi->die_parent != NULL | |
8370 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8371 | { | |
8372 | /* Normally, only "external" DIEs are part of the global scope. | |
8373 | But in Ada and Fortran, we want to be able to access nested | |
8374 | procedures globally. So all Ada and Fortran subprograms are | |
8375 | stored in the global scope. */ | |
76e288d1 | 8376 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8377 | } |
8378 | else | |
76e288d1 TT |
8379 | where = psymbol_placement::STATIC; |
8380 | ||
8381 | psymbol.domain = VAR_DOMAIN; | |
8382 | psymbol.aclass = LOC_BLOCK; | |
8383 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8384 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8385 | |
8386 | if (pdi->main_subprogram && actual_name != NULL) | |
8387 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8388 | break; |
72929c62 | 8389 | case DW_TAG_constant: |
76e288d1 TT |
8390 | psymbol.domain = VAR_DOMAIN; |
8391 | psymbol.aclass = LOC_STATIC; | |
8392 | where = (pdi->is_external | |
8393 | ? psymbol_placement::GLOBAL | |
8394 | : psymbol_placement::STATIC); | |
72929c62 | 8395 | break; |
c906108c | 8396 | case DW_TAG_variable: |
95554aad TT |
8397 | if (pdi->d.locdesc) |
8398 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8399 | |
95554aad | 8400 | if (pdi->d.locdesc |
caac4577 | 8401 | && addr == 0 |
5989a64e | 8402 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8403 | { |
8404 | /* A global or static variable may also have been stripped | |
8405 | out by the linker if unused, in which case its address | |
8406 | will be nullified; do not add such variables into partial | |
8407 | symbol table then. */ | |
8408 | } | |
8409 | else if (pdi->is_external) | |
c906108c SS |
8410 | { |
8411 | /* Global Variable. | |
8412 | Don't enter into the minimal symbol tables as there is | |
8413 | a minimal symbol table entry from the ELF symbols already. | |
8414 | Enter into partial symbol table if it has a location | |
8415 | descriptor or a type. | |
8416 | If the location descriptor is missing, new_symbol will create | |
8417 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8418 | be determined from the minimal symbol table whenever the variable | |
8419 | is referenced. | |
8420 | The address for the partial symbol table entry is not | |
8421 | used by GDB, but it comes in handy for debugging partial symbol | |
8422 | table building. */ | |
8423 | ||
95554aad | 8424 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8425 | { |
8426 | psymbol.domain = VAR_DOMAIN; | |
8427 | psymbol.aclass = LOC_STATIC; | |
8428 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8429 | psymbol.ginfo.value.address = addr; | |
8430 | where = psymbol_placement::GLOBAL; | |
8431 | } | |
c906108c SS |
8432 | } |
8433 | else | |
8434 | { | |
ff908ebf AW |
8435 | int has_loc = pdi->d.locdesc != NULL; |
8436 | ||
8437 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8438 | without location descriptors or constant values). */ | |
8439 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8440 | return; |
ff908ebf | 8441 | |
76e288d1 TT |
8442 | psymbol.domain = VAR_DOMAIN; |
8443 | psymbol.aclass = LOC_STATIC; | |
8444 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8445 | if (has_loc) | |
8446 | psymbol.ginfo.value.address = addr; | |
8447 | where = psymbol_placement::STATIC; | |
c906108c SS |
8448 | } |
8449 | break; | |
8450 | case DW_TAG_typedef: | |
8451 | case DW_TAG_base_type: | |
a02abb62 | 8452 | case DW_TAG_subrange_type: |
76e288d1 TT |
8453 | psymbol.domain = VAR_DOMAIN; |
8454 | psymbol.aclass = LOC_TYPEDEF; | |
8455 | where = psymbol_placement::STATIC; | |
c906108c | 8456 | break; |
74921315 | 8457 | case DW_TAG_imported_declaration: |
72bf9492 | 8458 | case DW_TAG_namespace: |
76e288d1 TT |
8459 | psymbol.domain = VAR_DOMAIN; |
8460 | psymbol.aclass = LOC_TYPEDEF; | |
8461 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8462 | break; |
530e8392 | 8463 | case DW_TAG_module: |
a5fd13a9 BH |
8464 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8465 | available without any name. If so, we skip the module as it | |
8466 | doesn't bring any value. */ | |
8467 | if (actual_name != nullptr) | |
76e288d1 TT |
8468 | { |
8469 | psymbol.domain = MODULE_DOMAIN; | |
8470 | psymbol.aclass = LOC_TYPEDEF; | |
8471 | where = psymbol_placement::GLOBAL; | |
8472 | } | |
530e8392 | 8473 | break; |
c906108c | 8474 | case DW_TAG_class_type: |
680b30c7 | 8475 | case DW_TAG_interface_type: |
c906108c SS |
8476 | case DW_TAG_structure_type: |
8477 | case DW_TAG_union_type: | |
8478 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8479 | /* Skip external references. The DWARF standard says in the section |
8480 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8481 | structure, union or class type is represented by a structure, | |
8482 | union or class entry that does not have a byte size attribute | |
8483 | and that has a DW_AT_declaration attribute." */ | |
8484 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8485 | return; |
fa4028e9 | 8486 | |
63d06c5c DC |
8487 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8488 | static vs. global. */ | |
76e288d1 TT |
8489 | psymbol.domain = STRUCT_DOMAIN; |
8490 | psymbol.aclass = LOC_TYPEDEF; | |
8491 | where = (cu->language == language_cplus | |
8492 | ? psymbol_placement::GLOBAL | |
8493 | : psymbol_placement::STATIC); | |
c906108c SS |
8494 | break; |
8495 | case DW_TAG_enumerator: | |
76e288d1 TT |
8496 | psymbol.domain = VAR_DOMAIN; |
8497 | psymbol.aclass = LOC_CONST; | |
8498 | where = (cu->language == language_cplus | |
8499 | ? psymbol_placement::GLOBAL | |
8500 | : psymbol_placement::STATIC); | |
c906108c SS |
8501 | break; |
8502 | default: | |
8503 | break; | |
8504 | } | |
76e288d1 TT |
8505 | |
8506 | if (where.has_value ()) | |
8507 | { | |
f049a313 TT |
8508 | if (built_actual_name != nullptr) |
8509 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8510 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8511 | psymbol.ginfo.set_linkage_name (actual_name); | |
8512 | else | |
8513 | { | |
8514 | psymbol.ginfo.set_demangled_name (actual_name, | |
8515 | &objfile->objfile_obstack); | |
8516 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8517 | } | |
76e288d1 TT |
8518 | add_psymbol_to_list (psymbol, *where, objfile); |
8519 | } | |
c906108c SS |
8520 | } |
8521 | ||
5c4e30ca DC |
8522 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8523 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8524 | the name of the enclosing namespace. */ | |
91c24f0a | 8525 | |
72bf9492 DJ |
8526 | static void |
8527 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8528 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8529 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8530 | { |
72bf9492 | 8531 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8532 | |
72bf9492 | 8533 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8534 | |
8535 | /* Now scan partial symbols in that namespace. */ | |
8536 | ||
91c24f0a | 8537 | if (pdi->has_children) |
cdc07690 | 8538 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8539 | } |
8540 | ||
5d7cb8df JK |
8541 | /* Read a partial die corresponding to a Fortran module. */ |
8542 | ||
8543 | static void | |
8544 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8545 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8546 | { |
530e8392 KB |
8547 | /* Add a symbol for the namespace. */ |
8548 | ||
8549 | add_partial_symbol (pdi, cu); | |
8550 | ||
f55ee35c | 8551 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8552 | |
8553 | if (pdi->has_children) | |
cdc07690 | 8554 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8555 | } |
8556 | ||
b1dc1806 XR |
8557 | /* Read a partial die corresponding to a subprogram or an inlined |
8558 | subprogram and create a partial symbol for that subprogram. | |
8559 | When the CU language allows it, this routine also defines a partial | |
8560 | symbol for each nested subprogram that this subprogram contains. | |
8561 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8562 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8563 | |
cdc07690 YQ |
8564 | PDI may also be a lexical block, in which case we simply search |
8565 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8566 | Again, this is only performed when the CU language allows this |
8567 | type of definitions. */ | |
8568 | ||
8569 | static void | |
8570 | add_partial_subprogram (struct partial_die_info *pdi, | |
8571 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8572 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8573 | { |
b1dc1806 | 8574 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8575 | { |
8576 | if (pdi->has_pc_info) | |
8577 | { | |
8578 | if (pdi->lowpc < *lowpc) | |
8579 | *lowpc = pdi->lowpc; | |
8580 | if (pdi->highpc > *highpc) | |
8581 | *highpc = pdi->highpc; | |
cdc07690 | 8582 | if (set_addrmap) |
5734ee8b | 8583 | { |
5e22e966 | 8584 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8585 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8586 | CORE_ADDR baseaddr; |
b926417a TT |
8587 | CORE_ADDR this_highpc; |
8588 | CORE_ADDR this_lowpc; | |
5734ee8b | 8589 | |
b3b3bada | 8590 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8591 | this_lowpc |
8592 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8593 | pdi->lowpc + baseaddr) | |
8594 | - baseaddr); | |
8595 | this_highpc | |
8596 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8597 | pdi->highpc + baseaddr) | |
8598 | - baseaddr); | |
d320c2b5 | 8599 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8600 | this_lowpc, this_highpc - 1, |
9291a0cd | 8601 | cu->per_cu->v.psymtab); |
5734ee8b | 8602 | } |
481860b3 GB |
8603 | } |
8604 | ||
8605 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8606 | { | |
bc30ff58 | 8607 | if (!pdi->is_declaration) |
e8d05480 JB |
8608 | /* Ignore subprogram DIEs that do not have a name, they are |
8609 | illegal. Do not emit a complaint at this point, we will | |
8610 | do so when we convert this psymtab into a symtab. */ | |
8611 | if (pdi->name) | |
8612 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8613 | } |
8614 | } | |
6e70227d | 8615 | |
bc30ff58 JB |
8616 | if (! pdi->has_children) |
8617 | return; | |
8618 | ||
0a4b0913 | 8619 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8620 | { |
8621 | pdi = pdi->die_child; | |
8622 | while (pdi != NULL) | |
8623 | { | |
52356b79 | 8624 | pdi->fixup (cu); |
bc30ff58 | 8625 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8626 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8627 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8628 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8629 | pdi = pdi->die_sibling; |
8630 | } | |
8631 | } | |
8632 | } | |
8633 | ||
91c24f0a DC |
8634 | /* Read a partial die corresponding to an enumeration type. */ |
8635 | ||
72bf9492 DJ |
8636 | static void |
8637 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8638 | struct dwarf2_cu *cu) | |
91c24f0a | 8639 | { |
72bf9492 | 8640 | struct partial_die_info *pdi; |
91c24f0a DC |
8641 | |
8642 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8643 | add_partial_symbol (enum_pdi, cu); |
8644 | ||
8645 | pdi = enum_pdi->die_child; | |
8646 | while (pdi) | |
91c24f0a | 8647 | { |
72bf9492 | 8648 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8649 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8650 | else |
72bf9492 DJ |
8651 | add_partial_symbol (pdi, cu); |
8652 | pdi = pdi->die_sibling; | |
91c24f0a | 8653 | } |
91c24f0a DC |
8654 | } |
8655 | ||
6caca83c CC |
8656 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8657 | ||
8658 | static unsigned int | |
d521ce57 | 8659 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8660 | { |
8661 | unsigned int bytes_read; | |
8662 | ||
8663 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8664 | } | |
8665 | ||
685af9cd TT |
8666 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8667 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8668 | ||
4bb7a0a7 DJ |
8669 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8670 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8671 | the initial number. */ | |
8672 | ||
8673 | static struct abbrev_info * | |
685af9cd TT |
8674 | peek_die_abbrev (const die_reader_specs &reader, |
8675 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8676 | { |
685af9cd | 8677 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8678 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8679 | unsigned int abbrev_number |
8680 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8681 | |
8682 | if (abbrev_number == 0) | |
8683 | return NULL; | |
8684 | ||
685af9cd | 8685 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8686 | if (!abbrev) |
8687 | { | |
422b9917 | 8688 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8689 | " at offset %s [in module %s]"), |
422b9917 | 8690 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8691 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8692 | } |
8693 | ||
8694 | return abbrev; | |
8695 | } | |
8696 | ||
93311388 DE |
8697 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8698 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8699 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8700 | ||
d521ce57 TT |
8701 | static const gdb_byte * |
8702 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8703 | { |
4bb7a0a7 DJ |
8704 | while (1) |
8705 | { | |
685af9cd TT |
8706 | unsigned int bytes_read; |
8707 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8708 | ||
4bb7a0a7 DJ |
8709 | if (abbrev == NULL) |
8710 | return info_ptr + bytes_read; | |
8711 | else | |
dee91e82 | 8712 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8713 | } |
8714 | } | |
8715 | ||
93311388 DE |
8716 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8717 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8718 | abbrev corresponding to that skipped uleb128 should be passed in |
8719 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8720 | children. */ | |
8721 | ||
d521ce57 TT |
8722 | static const gdb_byte * |
8723 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8724 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8725 | { |
8726 | unsigned int bytes_read; | |
8727 | struct attribute attr; | |
dee91e82 DE |
8728 | bfd *abfd = reader->abfd; |
8729 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8730 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8731 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8732 | unsigned int form, i; |
8733 | ||
8734 | for (i = 0; i < abbrev->num_attrs; i++) | |
8735 | { | |
8736 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8737 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8738 | { | |
18a8505e AT |
8739 | bool ignored; |
8740 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8741 | &ignored); | |
4bb7a0a7 | 8742 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8743 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8744 | else |
b9502d3f | 8745 | { |
0826b30a | 8746 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8747 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8748 | |
8749 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8750 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8751 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8752 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8753 | else |
8754 | return sibling_ptr; | |
8755 | } | |
4bb7a0a7 DJ |
8756 | } |
8757 | ||
8758 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8759 | form = abbrev->attrs[i].form; | |
8760 | skip_attribute: | |
8761 | switch (form) | |
8762 | { | |
4bb7a0a7 | 8763 | case DW_FORM_ref_addr: |
ae411497 TT |
8764 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8765 | and later it is offset sized. */ | |
8766 | if (cu->header.version == 2) | |
8767 | info_ptr += cu->header.addr_size; | |
8768 | else | |
8769 | info_ptr += cu->header.offset_size; | |
8770 | break; | |
36586728 TT |
8771 | case DW_FORM_GNU_ref_alt: |
8772 | info_ptr += cu->header.offset_size; | |
8773 | break; | |
ae411497 | 8774 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8775 | info_ptr += cu->header.addr_size; |
8776 | break; | |
8777 | case DW_FORM_data1: | |
8778 | case DW_FORM_ref1: | |
8779 | case DW_FORM_flag: | |
8fe0f950 | 8780 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8781 | info_ptr += 1; |
8782 | break; | |
2dc7f7b3 | 8783 | case DW_FORM_flag_present: |
43988095 | 8784 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8785 | break; |
4bb7a0a7 DJ |
8786 | case DW_FORM_data2: |
8787 | case DW_FORM_ref2: | |
8fe0f950 | 8788 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8789 | info_ptr += 2; |
8790 | break; | |
8fe0f950 AT |
8791 | case DW_FORM_strx3: |
8792 | info_ptr += 3; | |
8793 | break; | |
4bb7a0a7 DJ |
8794 | case DW_FORM_data4: |
8795 | case DW_FORM_ref4: | |
8fe0f950 | 8796 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8797 | info_ptr += 4; |
8798 | break; | |
8799 | case DW_FORM_data8: | |
8800 | case DW_FORM_ref8: | |
55f1336d | 8801 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8802 | info_ptr += 8; |
8803 | break; | |
0224619f JK |
8804 | case DW_FORM_data16: |
8805 | info_ptr += 16; | |
8806 | break; | |
4bb7a0a7 | 8807 | case DW_FORM_string: |
9b1c24c8 | 8808 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8809 | info_ptr += bytes_read; |
8810 | break; | |
2dc7f7b3 | 8811 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8812 | case DW_FORM_strp: |
36586728 | 8813 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8814 | info_ptr += cu->header.offset_size; |
8815 | break; | |
2dc7f7b3 | 8816 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8817 | case DW_FORM_block: |
8818 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8819 | info_ptr += bytes_read; | |
8820 | break; | |
8821 | case DW_FORM_block1: | |
8822 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8823 | break; | |
8824 | case DW_FORM_block2: | |
8825 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8826 | break; | |
8827 | case DW_FORM_block4: | |
8828 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8829 | break; | |
336d760d | 8830 | case DW_FORM_addrx: |
cf532bd1 | 8831 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8832 | case DW_FORM_sdata: |
8833 | case DW_FORM_udata: | |
8834 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8835 | case DW_FORM_GNU_addr_index: |
8836 | case DW_FORM_GNU_str_index: | |
18a8505e | 8837 | case DW_FORM_rnglistx: |
41144253 | 8838 | case DW_FORM_loclistx: |
d521ce57 | 8839 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8840 | break; |
8841 | case DW_FORM_indirect: | |
8842 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8843 | info_ptr += bytes_read; | |
8844 | /* We need to continue parsing from here, so just go back to | |
8845 | the top. */ | |
8846 | goto skip_attribute; | |
8847 | ||
8848 | default: | |
3e43a32a MS |
8849 | error (_("Dwarf Error: Cannot handle %s " |
8850 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8851 | dwarf_form_name (form), |
8852 | bfd_get_filename (abfd)); | |
8853 | } | |
8854 | } | |
8855 | ||
8856 | if (abbrev->has_children) | |
dee91e82 | 8857 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8858 | else |
8859 | return info_ptr; | |
8860 | } | |
8861 | ||
93311388 | 8862 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8863 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8864 | |
d521ce57 | 8865 | static const gdb_byte * |
dee91e82 DE |
8866 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8867 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8868 | const gdb_byte *info_ptr) |
91c24f0a DC |
8869 | { |
8870 | /* Do we know the sibling already? */ | |
72bf9492 | 8871 | |
91c24f0a DC |
8872 | if (orig_pdi->sibling) |
8873 | return orig_pdi->sibling; | |
8874 | ||
8875 | /* Are there any children to deal with? */ | |
8876 | ||
8877 | if (!orig_pdi->has_children) | |
8878 | return info_ptr; | |
8879 | ||
4bb7a0a7 | 8880 | /* Skip the children the long way. */ |
91c24f0a | 8881 | |
dee91e82 | 8882 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8883 | } |
8884 | ||
257e7a09 | 8885 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8886 | not NULL. */ |
c906108c | 8887 | |
891813be TT |
8888 | void |
8889 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8890 | { |
ed2dc618 SM |
8891 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8892 | = get_dwarf2_per_objfile (objfile); | |
8893 | ||
af758d11 SM |
8894 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (per_cu_data)); |
8895 | ||
077cbab2 TT |
8896 | /* If this psymtab is constructed from a debug-only objfile, the |
8897 | has_section_at_zero flag will not necessarily be correct. We | |
8898 | can get the correct value for this flag by looking at the data | |
8899 | associated with the (presumably stripped) associated objfile. */ | |
8900 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8901 | { |
077cbab2 TT |
8902 | struct dwarf2_per_objfile *dpo_backlink |
8903 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8904 | |
5989a64e SM |
8905 | dwarf2_per_objfile->per_bfd->has_section_at_zero |
8906 | = dpo_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8907 | } |
98bfdba5 | 8908 | |
8566b89b | 8909 | expand_psymtab (objfile); |
95554aad | 8910 | |
ed2dc618 | 8911 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8912 | } |
9cdd5dbd DE |
8913 | \f |
8914 | /* Reading in full CUs. */ | |
c906108c | 8915 | |
10b3939b DJ |
8916 | /* Add PER_CU to the queue. */ |
8917 | ||
8918 | static void | |
120ce1b5 SM |
8919 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8920 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8921 | enum language pretend_language) |
10b3939b | 8922 | { |
10b3939b | 8923 | per_cu->queued = 1; |
120ce1b5 | 8924 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
8925 | } |
8926 | ||
89e63ee4 DE |
8927 | /* If PER_CU is not yet queued, add it to the queue. |
8928 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8929 | dependency. | |
0907af0c | 8930 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8931 | meaning either PER_CU is already queued or it is already loaded. |
8932 | ||
8933 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8934 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8935 | |
8936 | static int | |
89e63ee4 | 8937 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
8938 | dwarf2_per_cu_data *per_cu, |
8939 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
8940 | enum language pretend_language) |
8941 | { | |
8942 | /* We may arrive here during partial symbol reading, if we need full | |
8943 | DIEs to process an unusual case (e.g. template arguments). Do | |
8944 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8945 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c DE |
8946 | { |
8947 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8948 | return 1; | |
8949 | return 0; | |
8950 | } | |
8951 | ||
8952 | /* Mark the dependence relation so that we don't flush PER_CU | |
8953 | too early. */ | |
89e63ee4 DE |
8954 | if (dependent_cu != NULL) |
8955 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8956 | |
8957 | /* If it's already on the queue, we have nothing to do. */ | |
8958 | if (per_cu->queued) | |
8959 | return 0; | |
8960 | ||
8961 | /* If the compilation unit is already loaded, just mark it as | |
8962 | used. */ | |
8963 | if (per_cu->cu != NULL) | |
8964 | { | |
8965 | per_cu->cu->last_used = 0; | |
8966 | return 0; | |
8967 | } | |
8968 | ||
8969 | /* Add it to the queue. */ | |
120ce1b5 | 8970 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
8971 | |
8972 | return 1; | |
8973 | } | |
8974 | ||
10b3939b DJ |
8975 | /* Process the queue. */ |
8976 | ||
8977 | static void | |
ed2dc618 | 8978 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8979 | { |
b4f54984 | 8980 | if (dwarf_read_debug) |
45cfd468 DE |
8981 | { |
8982 | fprintf_unfiltered (gdb_stdlog, | |
8983 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8984 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8985 | } |
8986 | ||
03dd20cc DJ |
8987 | /* The queue starts out with one item, but following a DIE reference |
8988 | may load a new CU, adding it to the end of the queue. */ | |
5989a64e | 8989 | while (!dwarf2_per_objfile->per_bfd->queue.empty ()) |
10b3939b | 8990 | { |
5989a64e | 8991 | dwarf2_queue_item &item = dwarf2_per_objfile->per_bfd->queue.front (); |
39856def | 8992 | |
af758d11 | 8993 | if (!dwarf2_per_objfile->symtab_set_p (item.per_cu) |
cc12ce38 | 8994 | /* Skip dummy CUs. */ |
39856def | 8995 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8996 | { |
39856def | 8997 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8998 | unsigned int debug_print_threshold; |
247f5c4f | 8999 | char buf[100]; |
f4dc4d17 | 9000 | |
247f5c4f | 9001 | if (per_cu->is_debug_types) |
f4dc4d17 | 9002 | { |
247f5c4f DE |
9003 | struct signatured_type *sig_type = |
9004 | (struct signatured_type *) per_cu; | |
9005 | ||
9d8780f0 | 9006 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9007 | hex_string (sig_type->signature), |
9d8780f0 | 9008 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9009 | /* There can be 100s of TUs. |
9010 | Only print them in verbose mode. */ | |
9011 | debug_print_threshold = 2; | |
f4dc4d17 | 9012 | } |
247f5c4f | 9013 | else |
73be47f5 | 9014 | { |
9d8780f0 SM |
9015 | sprintf (buf, "CU at offset %s", |
9016 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9017 | debug_print_threshold = 1; |
9018 | } | |
247f5c4f | 9019 | |
b4f54984 | 9020 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9021 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9022 | |
9023 | if (per_cu->is_debug_types) | |
47b14e86 SM |
9024 | process_full_type_unit (per_cu, dwarf2_per_objfile, |
9025 | item.pretend_language); | |
f4dc4d17 | 9026 | else |
47b14e86 SM |
9027 | process_full_comp_unit (per_cu, dwarf2_per_objfile, |
9028 | item.pretend_language); | |
f4dc4d17 | 9029 | |
b4f54984 | 9030 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9031 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9032 | } |
10b3939b | 9033 | |
39856def | 9034 | item.per_cu->queued = 0; |
5989a64e | 9035 | dwarf2_per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9036 | } |
9037 | ||
b4f54984 | 9038 | if (dwarf_read_debug) |
45cfd468 DE |
9039 | { |
9040 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9041 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9042 | } |
10b3939b DJ |
9043 | } |
9044 | ||
10b3939b DJ |
9045 | /* Read in full symbols for PST, and anything it depends on. */ |
9046 | ||
8566b89b TT |
9047 | void |
9048 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9049 | { |
af758d11 | 9050 | gdb_assert (!readin_p (objfile)); |
95554aad | 9051 | |
48993951 | 9052 | expand_dependencies (objfile); |
aaa75496 | 9053 | |
97a1449a SM |
9054 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9055 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); | |
5717c425 | 9056 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9057 | } |
9058 | ||
af758d11 SM |
9059 | /* See psympriv.h. */ |
9060 | ||
9061 | bool | |
9062 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9063 | { | |
9064 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9065 | return per_objfile->symtab_set_p (per_cu_data); | |
9066 | } | |
9067 | ||
9068 | /* See psympriv.h. */ | |
9069 | ||
9070 | compunit_symtab * | |
9071 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9072 | { | |
9073 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9074 | return per_objfile->get_symtab (per_cu_data); | |
9075 | } | |
9076 | ||
dee91e82 DE |
9077 | /* Trivial hash function for die_info: the hash value of a DIE |
9078 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9079 | |
dee91e82 DE |
9080 | static hashval_t |
9081 | die_hash (const void *item) | |
10b3939b | 9082 | { |
9a3c8263 | 9083 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9084 | |
9c541725 | 9085 | return to_underlying (die->sect_off); |
dee91e82 | 9086 | } |
63d06c5c | 9087 | |
dee91e82 DE |
9088 | /* Trivial comparison function for die_info structures: two DIEs |
9089 | are equal if they have the same offset. */ | |
98bfdba5 | 9090 | |
dee91e82 DE |
9091 | static int |
9092 | die_eq (const void *item_lhs, const void *item_rhs) | |
9093 | { | |
9a3c8263 SM |
9094 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9095 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9096 | |
9c541725 | 9097 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9098 | } |
c906108c | 9099 | |
c0ab21c2 | 9100 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9101 | |
dee91e82 | 9102 | static void |
ab432490 SM |
9103 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9104 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9105 | bool skip_partial, |
9106 | enum language pretend_language) | |
dee91e82 | 9107 | { |
c0ab21c2 TT |
9108 | gdb_assert (! this_cu->is_debug_types); |
9109 | ||
ab432490 | 9110 | cutu_reader reader (this_cu, per_objfile, NULL, 1, skip_partial); |
c0ab21c2 TT |
9111 | if (reader.dummy_p) |
9112 | return; | |
9113 | ||
9114 | struct dwarf2_cu *cu = reader.cu; | |
9115 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9116 | |
dee91e82 DE |
9117 | gdb_assert (cu->die_hash == NULL); |
9118 | cu->die_hash = | |
9119 | htab_create_alloc_ex (cu->header.length / 12, | |
9120 | die_hash, | |
9121 | die_eq, | |
9122 | NULL, | |
9123 | &cu->comp_unit_obstack, | |
9124 | hashtab_obstack_allocate, | |
9125 | dummy_obstack_deallocate); | |
e142c38c | 9126 | |
3e225074 | 9127 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9128 | reader.comp_unit_die->child |
9129 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9130 | &info_ptr, reader.comp_unit_die); | |
9131 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9132 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9133 | |
9134 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9135 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9136 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9137 | or we won't be able to build types correctly. |
9138 | Similarly, if we do not read the producer, we can not apply | |
9139 | producer-specific interpretation. */ | |
c0ab21c2 | 9140 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9141 | |
9142 | reader.keep (); | |
10b3939b DJ |
9143 | } |
9144 | ||
3da10d80 KS |
9145 | /* Add a DIE to the delayed physname list. */ |
9146 | ||
9147 | static void | |
9148 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9149 | const char *name, struct die_info *die, | |
9150 | struct dwarf2_cu *cu) | |
9151 | { | |
9152 | struct delayed_method_info mi; | |
9153 | mi.type = type; | |
9154 | mi.fnfield_index = fnfield_index; | |
9155 | mi.index = index; | |
9156 | mi.name = name; | |
9157 | mi.die = die; | |
c89b44cd | 9158 | cu->method_list.push_back (mi); |
3da10d80 KS |
9159 | } |
9160 | ||
3693fdb3 PA |
9161 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9162 | "const" / "volatile". If so, decrements LEN by the length of the | |
9163 | modifier and return true. Otherwise return false. */ | |
9164 | ||
9165 | template<size_t N> | |
9166 | static bool | |
9167 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9168 | { | |
9169 | size_t mod_len = sizeof (mod) - 1; | |
9170 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9171 | { | |
9172 | len -= mod_len; | |
9173 | return true; | |
9174 | } | |
9175 | return false; | |
9176 | } | |
9177 | ||
3da10d80 KS |
9178 | /* Compute the physnames of any methods on the CU's method list. |
9179 | ||
9180 | The computation of method physnames is delayed in order to avoid the | |
9181 | (bad) condition that one of the method's formal parameters is of an as yet | |
9182 | incomplete type. */ | |
9183 | ||
9184 | static void | |
9185 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9186 | { | |
3693fdb3 | 9187 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9188 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9189 | return; |
9190 | gdb_assert (cu->language == language_cplus); | |
9191 | ||
52941706 | 9192 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9193 | { |
1d06ead6 | 9194 | const char *physname; |
3da10d80 | 9195 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9196 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9197 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9198 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9199 | = physname ? physname : ""; |
3693fdb3 PA |
9200 | |
9201 | /* Since there's no tag to indicate whether a method is a | |
9202 | const/volatile overload, extract that information out of the | |
9203 | demangled name. */ | |
9204 | if (physname != NULL) | |
9205 | { | |
9206 | size_t len = strlen (physname); | |
9207 | ||
9208 | while (1) | |
9209 | { | |
9210 | if (physname[len] == ')') /* shortcut */ | |
9211 | break; | |
9212 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9213 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9214 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9215 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9216 | else |
9217 | break; | |
9218 | } | |
9219 | } | |
3da10d80 | 9220 | } |
c89b44cd TT |
9221 | |
9222 | /* The list is no longer needed. */ | |
9223 | cu->method_list.clear (); | |
3da10d80 KS |
9224 | } |
9225 | ||
a766d390 DE |
9226 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9227 | and it's not clear if/how imported objects will appear. | |
9228 | To keep Go support simple until that's worked out, | |
9229 | go back through what we've read and create something usable. | |
9230 | We could do this while processing each DIE, and feels kinda cleaner, | |
9231 | but that way is more invasive. | |
9232 | This is to, for example, allow the user to type "p var" or "b main" | |
9233 | without having to specify the package name, and allow lookups | |
9234 | of module.object to work in contexts that use the expression | |
9235 | parser. */ | |
9236 | ||
9237 | static void | |
9238 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9239 | { | |
421d1616 | 9240 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9241 | struct pending *list; |
9242 | int i; | |
9243 | ||
c24bdb02 | 9244 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9245 | list != NULL; |
9246 | list = list->next) | |
a766d390 DE |
9247 | { |
9248 | for (i = 0; i < list->nsyms; ++i) | |
9249 | { | |
9250 | struct symbol *sym = list->symbol[i]; | |
9251 | ||
c1b5c1eb | 9252 | if (sym->language () == language_go |
a766d390 DE |
9253 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9254 | { | |
421d1616 TT |
9255 | gdb::unique_xmalloc_ptr<char> this_package_name |
9256 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9257 | |
9258 | if (this_package_name == NULL) | |
9259 | continue; | |
9260 | if (package_name == NULL) | |
421d1616 | 9261 | package_name = std::move (this_package_name); |
a766d390 DE |
9262 | else |
9263 | { | |
5e22e966 | 9264 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9265 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9266 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9267 | (symbol_symtab (sym) != NULL |
9268 | ? symtab_to_filename_for_display | |
9269 | (symbol_symtab (sym)) | |
e3b94546 | 9270 | : objfile_name (objfile)), |
421d1616 | 9271 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9272 | } |
9273 | } | |
9274 | } | |
9275 | } | |
9276 | ||
9277 | if (package_name != NULL) | |
9278 | { | |
5e22e966 | 9279 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9280 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9281 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9282 | saved_package_name); | |
a766d390 DE |
9283 | struct symbol *sym; |
9284 | ||
8c14c3a3 | 9285 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9286 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9287 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9288 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9289 | e.g., "main" finds the "main" module and not C's main(). */ | |
9290 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9291 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9292 | SYMBOL_TYPE (sym) = type; |
9293 | ||
c24bdb02 | 9294 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9295 | } |
9296 | } | |
9297 | ||
c9317f21 TT |
9298 | /* Allocate a fully-qualified name consisting of the two parts on the |
9299 | obstack. */ | |
9300 | ||
9301 | static const char * | |
9302 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9303 | { | |
9304 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9305 | } | |
9306 | ||
9c6a1327 TT |
9307 | /* A helper that allocates a variant part to attach to a Rust enum |
9308 | type. OBSTACK is where the results should be allocated. TYPE is | |
9309 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9310 | discriminant. It must be the index of one of the fields of TYPE. | |
9311 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9312 | no default. RANGES is indexed by "effective" field number (the | |
9313 | field index, but omitting the discriminant and default fields) and | |
9314 | must hold the discriminant values used by the variants. Note that | |
9315 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9316 | already allocated on it, or static. */ | |
c9317f21 | 9317 | |
9c6a1327 TT |
9318 | static void |
9319 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9320 | int discriminant_index, int default_index, | |
9321 | gdb::array_view<discriminant_range> ranges) | |
9322 | { | |
9323 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9324 | must be handled by the caller. */ | |
9325 | gdb_assert (discriminant_index >= 0 | |
1f704f76 | 9326 | && discriminant_index < type->num_fields ()); |
c9317f21 | 9327 | gdb_assert (default_index == -1 |
1f704f76 | 9328 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9329 | |
9c6a1327 | 9330 | /* We have one variant for each non-discriminant field. */ |
1f704f76 | 9331 | int n_variants = type->num_fields () - 1; |
c9317f21 | 9332 | |
9c6a1327 TT |
9333 | variant *variants = new (obstack) variant[n_variants]; |
9334 | int var_idx = 0; | |
9335 | int range_idx = 0; | |
1f704f76 | 9336 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9337 | { |
9338 | if (i == discriminant_index) | |
9339 | continue; | |
c9317f21 | 9340 | |
9c6a1327 TT |
9341 | variants[var_idx].first_field = i; |
9342 | variants[var_idx].last_field = i + 1; | |
9343 | ||
9344 | /* The default field does not need a range, but other fields do. | |
9345 | We skipped the discriminant above. */ | |
9346 | if (i != default_index) | |
9347 | { | |
9348 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9349 | ++range_idx; | |
9350 | } | |
c9317f21 | 9351 | |
9c6a1327 TT |
9352 | ++var_idx; |
9353 | } | |
9354 | ||
9355 | gdb_assert (range_idx == ranges.size ()); | |
9356 | gdb_assert (var_idx == n_variants); | |
9357 | ||
9358 | variant_part *part = new (obstack) variant_part; | |
9359 | part->discriminant_index = discriminant_index; | |
9360 | part->is_unsigned = TYPE_UNSIGNED (TYPE_FIELD_TYPE (type, | |
9361 | discriminant_index)); | |
9362 | part->variants = gdb::array_view<variant> (variants, n_variants); | |
9363 | ||
9364 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9365 | gdb::array_view<variant_part> *prop_value | |
9366 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9367 | |
9c6a1327 TT |
9368 | struct dynamic_prop prop; |
9369 | prop.kind = PROP_VARIANT_PARTS; | |
9370 | prop.data.variant_parts = prop_value; | |
9371 | ||
5c54719c | 9372 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9373 | } |
9374 | ||
9375 | /* Some versions of rustc emitted enums in an unusual way. | |
9376 | ||
9377 | Ordinary enums were emitted as unions. The first element of each | |
9378 | structure in the union was named "RUST$ENUM$DISR". This element | |
9379 | held the discriminant. | |
9380 | ||
9381 | These versions of Rust also implemented the "non-zero" | |
9382 | optimization. When the enum had two values, and one is empty and | |
9383 | the other holds a pointer that cannot be zero, the pointer is used | |
9384 | as the discriminant, with a zero value meaning the empty variant. | |
9385 | Here, the union's first member is of the form | |
9386 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9387 | where the fieldnos are the indices of the fields that should be | |
9388 | traversed in order to find the field (which may be several fields deep) | |
9389 | and the variantname is the name of the variant of the case when the | |
9390 | field is zero. | |
9391 | ||
9392 | This function recognizes whether TYPE is of one of these forms, | |
9393 | and, if so, smashes it to be a variant type. */ | |
9394 | ||
9395 | static void | |
9396 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9397 | { | |
78134374 | 9398 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9399 | |
9400 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9401 | if (type->num_fields () == 0) |
c9317f21 TT |
9402 | return; |
9403 | ||
9404 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9405 | if (type->num_fields () == 1 |
c9317f21 TT |
9406 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9407 | { | |
9408 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9409 | ||
9410 | /* Decode the field name to find the offset of the | |
9411 | discriminant. */ | |
9412 | ULONGEST bit_offset = 0; | |
9413 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9414 | while (name[0] >= '0' && name[0] <= '9') | |
9415 | { | |
9416 | char *tail; | |
9417 | unsigned long index = strtoul (name, &tail, 10); | |
9418 | name = tail; | |
9419 | if (*name != '$' | |
1f704f76 | 9420 | || index >= field_type->num_fields () |
c9317f21 TT |
9421 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9422 | != FIELD_LOC_KIND_BITPOS)) | |
9423 | { | |
b98664d3 | 9424 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9425 | "[in module %s]"), |
9426 | TYPE_FIELD_NAME (type, 0), | |
9427 | objfile_name (objfile)); | |
9428 | return; | |
9429 | } | |
9430 | ++name; | |
9431 | ||
9432 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9433 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9434 | } | |
9435 | ||
9c6a1327 TT |
9436 | /* Smash this type to be a structure type. We have to do this |
9437 | because the type has already been recorded. */ | |
67607e24 | 9438 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9439 | type->set_num_fields (3); |
9c6a1327 | 9440 | /* Save the field we care about. */ |
ceacbf6e | 9441 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9442 | type->set_fields |
9443 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9444 | |
9c6a1327 TT |
9445 | /* Put the discriminant at index 0. */ |
9446 | TYPE_FIELD_TYPE (type, 0) = field_type; | |
9447 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; | |
9448 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9449 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9450 | |
9451 | /* The order of fields doesn't really matter, so put the real | |
9452 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9453 | type->field (1) = saved_field; |
9c6a1327 | 9454 | TYPE_FIELD_NAME (type, 1) |
7d93a1e0 | 9455 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, 1)->name ()); |
d0e39ea2 | 9456 | TYPE_FIELD_TYPE (type, 1)->set_name |
7d93a1e0 | 9457 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9458 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9459 | |
9460 | const char *dataless_name | |
7d93a1e0 | 9461 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9462 | name); |
9463 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9464 | dataless_name); | |
9c6a1327 | 9465 | TYPE_FIELD_TYPE (type, 2) = dataless_type; |
c9317f21 TT |
9466 | /* NAME points into the original discriminant name, which |
9467 | already has the correct lifetime. */ | |
9c6a1327 | 9468 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9469 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9470 | |
9c6a1327 TT |
9471 | /* Indicate that this is a variant type. */ |
9472 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9473 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9474 | } |
77c2dba3 TT |
9475 | /* A union with a single anonymous field is probably an old-style |
9476 | univariant enum. */ | |
1f704f76 | 9477 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9478 | { |
c9317f21 TT |
9479 | /* Smash this type to be a structure type. We have to do this |
9480 | because the type has already been recorded. */ | |
67607e24 | 9481 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9482 | |
9c6a1327 | 9483 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); |
c9317f21 | 9484 | const char *variant_name |
7d93a1e0 | 9485 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9486 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9487 | field_type->set_name |
9488 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9489 | type->name (), variant_name)); |
c9317f21 TT |
9490 | } |
9491 | else | |
9492 | { | |
9493 | struct type *disr_type = nullptr; | |
1f704f76 | 9494 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 TT |
9495 | { |
9496 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9497 | ||
78134374 | 9498 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9499 | { |
9500 | /* All fields of a true enum will be structs. */ | |
9501 | return; | |
9502 | } | |
1f704f76 | 9503 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9504 | { |
9505 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9506 | disr_type = nullptr; |
c9317f21 TT |
9507 | } |
9508 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9509 | "RUST$ENUM$DISR") != 0) | |
9510 | { | |
9511 | /* Not a Rust enum. */ | |
9512 | return; | |
9513 | } | |
9514 | else | |
9515 | { | |
9516 | /* Found one. */ | |
9517 | break; | |
9518 | } | |
9519 | } | |
9520 | ||
9521 | /* If we got here without a discriminant, then it's probably | |
9522 | just a union. */ | |
9523 | if (disr_type == nullptr) | |
9524 | return; | |
9525 | ||
9526 | /* Smash this type to be a structure type. We have to do this | |
9527 | because the type has already been recorded. */ | |
67607e24 | 9528 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9529 | |
9c6a1327 | 9530 | /* Make space for the discriminant field. */ |
ceacbf6e | 9531 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9532 | field *new_fields |
1f704f76 | 9533 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9534 | * sizeof (struct field))); |
80fc5e77 | 9535 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9536 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9537 | type->set_fields (new_fields); |
1f704f76 | 9538 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9539 | |
9540 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9541 | type->field (0) = *disr_field; |
9c6a1327 TT |
9542 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9543 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9544 | |
9545 | /* We need a way to find the correct discriminant given a | |
9546 | variant name. For convenience we build a map here. */ | |
9547 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9548 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
1f704f76 | 9549 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9550 | { |
9551 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9552 | { | |
9553 | const char *name | |
9554 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9555 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9556 | } | |
9557 | } | |
9558 | ||
1f704f76 | 9559 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9560 | /* We don't need a range entry for the discriminant, but we do |
9561 | need one for every other field, as there is no default | |
9562 | variant. */ | |
9563 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9564 | discriminant_range, | |
9565 | n_fields - 1); | |
c9317f21 TT |
9566 | /* Skip the discriminant here. */ |
9567 | for (int i = 1; i < n_fields; ++i) | |
9568 | { | |
9569 | /* Find the final word in the name of this variant's type. | |
9570 | That name can be used to look up the correct | |
9571 | discriminant. */ | |
9572 | const char *variant_name | |
7d93a1e0 | 9573 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, i)->name ()); |
c9317f21 TT |
9574 | |
9575 | auto iter = discriminant_map.find (variant_name); | |
9576 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9577 | { |
9578 | ranges[i].low = iter->second; | |
9579 | ranges[i].high = iter->second; | |
9580 | } | |
c9317f21 | 9581 | |
bedda9ac | 9582 | /* Remove the discriminant field, if it exists. */ |
9c6a1327 | 9583 | struct type *sub_type = TYPE_FIELD_TYPE (type, i); |
1f704f76 | 9584 | if (sub_type->num_fields () > 0) |
bedda9ac | 9585 | { |
5e33d5f4 | 9586 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9587 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9588 | } |
9c6a1327 | 9589 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9590 | sub_type->set_name |
9591 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9592 | type->name (), variant_name)); |
c9317f21 | 9593 | } |
9c6a1327 TT |
9594 | |
9595 | /* Indicate that this is a variant type. */ | |
9596 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9597 | gdb::array_view<discriminant_range> (ranges, | |
9598 | n_fields - 1)); | |
c9317f21 TT |
9599 | } |
9600 | } | |
9601 | ||
9602 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9603 | ||
9604 | static void | |
9605 | rust_union_quirks (struct dwarf2_cu *cu) | |
9606 | { | |
9607 | gdb_assert (cu->language == language_rust); | |
52941706 | 9608 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9609 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9610 | /* We don't need this any more. */ |
9611 | cu->rust_unions.clear (); | |
c9317f21 TT |
9612 | } |
9613 | ||
8adb8487 TT |
9614 | /* See read.h. */ |
9615 | ||
9616 | type_unit_group_unshareable * | |
9617 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9618 | { | |
9619 | auto iter = this->m_type_units.find (tu_group); | |
9620 | if (iter != this->m_type_units.end ()) | |
9621 | return iter->second.get (); | |
9622 | ||
9623 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9624 | type_unit_group_unshareable *result = uniq.get (); | |
9625 | this->m_type_units[tu_group] = std::move (uniq); | |
9626 | return result; | |
9627 | } | |
9628 | ||
e286671b TT |
9629 | struct type * |
9630 | dwarf2_per_objfile::get_type_for_signatured_type | |
9631 | (signatured_type *sig_type) const | |
9632 | { | |
9633 | auto iter = this->m_type_map.find (sig_type); | |
9634 | if (iter == this->m_type_map.end ()) | |
9635 | return nullptr; | |
9636 | ||
9637 | return iter->second; | |
9638 | } | |
9639 | ||
9640 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9641 | (signatured_type *sig_type, struct type *type) | |
9642 | { | |
9643 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9644 | ||
9645 | this->m_type_map[sig_type] = type; | |
9646 | } | |
9647 | ||
95554aad TT |
9648 | /* A helper function for computing the list of all symbol tables |
9649 | included by PER_CU. */ | |
9650 | ||
9651 | static void | |
4c39bc03 | 9652 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9653 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9654 | dwarf2_per_cu_data *per_cu, |
9655 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9656 | struct compunit_symtab *immediate_parent) |
95554aad | 9657 | { |
af758d11 | 9658 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9659 | if (*slot != NULL) |
9660 | { | |
9661 | /* This inclusion and its children have been processed. */ | |
9662 | return; | |
9663 | } | |
9664 | ||
9665 | *slot = per_cu; | |
af758d11 | 9666 | |
95554aad | 9667 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9668 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9669 | if (cust != NULL) |
ec94af83 DE |
9670 | { |
9671 | /* If this is a type unit only add its symbol table if we haven't | |
9672 | seen it yet (type unit per_cu's can share symtabs). */ | |
9673 | if (per_cu->is_debug_types) | |
9674 | { | |
43f3e411 | 9675 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9676 | if (*slot == NULL) |
9677 | { | |
43f3e411 | 9678 | *slot = cust; |
4c39bc03 | 9679 | result->push_back (cust); |
43f3e411 DE |
9680 | if (cust->user == NULL) |
9681 | cust->user = immediate_parent; | |
ec94af83 DE |
9682 | } |
9683 | } | |
9684 | else | |
f9125b6c | 9685 | { |
4c39bc03 | 9686 | result->push_back (cust); |
43f3e411 DE |
9687 | if (cust->user == NULL) |
9688 | cust->user = immediate_parent; | |
f9125b6c | 9689 | } |
ec94af83 | 9690 | } |
95554aad | 9691 | |
ae640021 AB |
9692 | if (!per_cu->imported_symtabs_empty ()) |
9693 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9694 | { | |
9695 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9696 | all_type_symtabs, ptr, per_objfile, |
9697 | cust); | |
ae640021 | 9698 | } |
95554aad TT |
9699 | } |
9700 | ||
43f3e411 | 9701 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9702 | PER_CU. */ |
9703 | ||
9704 | static void | |
43182c09 SM |
9705 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9706 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9707 | { |
f4dc4d17 DE |
9708 | gdb_assert (! per_cu->is_debug_types); |
9709 | ||
ae640021 | 9710 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9711 | { |
ae640021 | 9712 | int len; |
4c39bc03 | 9713 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9714 | htab_t all_children, all_type_symtabs; |
43182c09 | 9715 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9716 | |
9717 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9718 | if (cust == NULL) |
95554aad TT |
9719 | return; |
9720 | ||
9721 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9722 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9723 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9724 | NULL, xcalloc, xfree); | |
95554aad | 9725 | |
ae640021 | 9726 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9727 | { |
9728 | recursively_compute_inclusions (&result_symtabs, all_children, | |
43182c09 SM |
9729 | all_type_symtabs, ptr, per_objfile, |
9730 | cust); | |
ec94af83 | 9731 | } |
95554aad | 9732 | |
ec94af83 | 9733 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9734 | len = result_symtabs.size (); |
43f3e411 | 9735 | cust->includes |
f6e649dd | 9736 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9737 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9738 | memcpy (cust->includes, result_symtabs.data (), |
9739 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9740 | cust->includes[len] = NULL; |
95554aad | 9741 | |
95554aad | 9742 | htab_delete (all_children); |
ec94af83 | 9743 | htab_delete (all_type_symtabs); |
95554aad TT |
9744 | } |
9745 | } | |
9746 | ||
9747 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9748 | read. */ | |
9749 | ||
9750 | static void | |
ed2dc618 | 9751 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9752 | { |
5989a64e | 9753 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9754 | { |
9755 | if (! iter->is_debug_types) | |
43182c09 | 9756 | compute_compunit_symtab_includes (iter, dwarf2_per_objfile); |
f4dc4d17 | 9757 | } |
95554aad | 9758 | |
5989a64e | 9759 | dwarf2_per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9760 | } |
9761 | ||
9cdd5dbd | 9762 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9763 | already been loaded into memory. */ |
9764 | ||
9765 | static void | |
47b14e86 SM |
9766 | process_full_comp_unit (dwarf2_per_cu_data *per_cu, |
9767 | dwarf2_per_objfile *dwarf2_per_objfile, | |
95554aad | 9768 | enum language pretend_language) |
10b3939b | 9769 | { |
10b3939b | 9770 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 | 9771 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 9772 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9773 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9774 | struct compunit_symtab *cust; |
10b3939b | 9775 | CORE_ADDR baseaddr; |
4359dff1 | 9776 | struct block *static_block; |
3e29f34a | 9777 | CORE_ADDR addr; |
10b3939b | 9778 | |
b3b3bada | 9779 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9780 | |
c89b44cd TT |
9781 | /* Clear the list here in case something was left over. */ |
9782 | cu->method_list.clear (); | |
10b3939b | 9783 | |
95554aad TT |
9784 | cu->language = pretend_language; |
9785 | cu->language_defn = language_def (cu->language); | |
9786 | ||
c906108c | 9787 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9788 | process_die (cu->dies, cu); |
c906108c | 9789 | |
a766d390 DE |
9790 | /* For now fudge the Go package. */ |
9791 | if (cu->language == language_go) | |
9792 | fixup_go_packaging (cu); | |
9793 | ||
5f48f8f3 | 9794 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9795 | should be complete, and it should now be safe to compute all of the |
9796 | physnames. */ | |
9797 | compute_delayed_physnames (cu); | |
3da10d80 | 9798 | |
c9317f21 TT |
9799 | if (cu->language == language_rust) |
9800 | rust_union_quirks (cu); | |
9801 | ||
fae299cd DC |
9802 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9803 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9804 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9805 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9806 | |
3e29f34a | 9807 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9808 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9809 | |
9810 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9811 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9812 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9813 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9814 | this comp unit. */ | |
9815 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9816 | ||
c24bdb02 | 9817 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9818 | SECT_OFF_TEXT (objfile), |
9819 | 0); | |
c906108c | 9820 | |
43f3e411 | 9821 | if (cust != NULL) |
c906108c | 9822 | { |
df15bd07 | 9823 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9824 | |
8be455d7 JK |
9825 | /* Set symtab language to language from DW_AT_language. If the |
9826 | compilation is from a C file generated by language preprocessors, do | |
9827 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9828 | if (!(cu->language == language_c |
40e3ad0e | 9829 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9830 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9831 | |
9832 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9833 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9834 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9835 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9836 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9837 | |
9838 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9839 | needed, it would be wrong due to missing DW_AT_producer there. | |
9840 | ||
9841 | Still one can confuse GDB by using non-standard GCC compilation | |
9842 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9843 | */ |
ab260dad | 9844 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9845 | cust->locations_valid = 1; |
e0d00bc7 JK |
9846 | |
9847 | if (gcc_4_minor >= 5) | |
43f3e411 | 9848 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9849 | |
43f3e411 | 9850 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9851 | } |
9291a0cd | 9852 | |
af758d11 | 9853 | dwarf2_per_objfile->set_symtab (per_cu, cust); |
c906108c | 9854 | |
95554aad | 9855 | /* Push it for inclusion processing later. */ |
5989a64e | 9856 | dwarf2_per_objfile->per_bfd->just_read_cus.push_back (per_cu); |
804d2729 TT |
9857 | |
9858 | /* Not needed any more. */ | |
c24bdb02 | 9859 | cu->reset_builder (); |
f4dc4d17 | 9860 | } |
45cfd468 | 9861 | |
f4dc4d17 DE |
9862 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9863 | already been loaded into memory. */ | |
9864 | ||
9865 | static void | |
47b14e86 SM |
9866 | process_full_type_unit (dwarf2_per_cu_data *per_cu, |
9867 | dwarf2_per_objfile *dwarf2_per_objfile, | |
f4dc4d17 DE |
9868 | enum language pretend_language) |
9869 | { | |
9870 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 | 9871 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43f3e411 | 9872 | struct compunit_symtab *cust; |
0186c6a7 DE |
9873 | struct signatured_type *sig_type; |
9874 | ||
9875 | gdb_assert (per_cu->is_debug_types); | |
9876 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9877 | |
c89b44cd TT |
9878 | /* Clear the list here in case something was left over. */ |
9879 | cu->method_list.clear (); | |
f4dc4d17 | 9880 | |
f4dc4d17 DE |
9881 | cu->language = pretend_language; |
9882 | cu->language_defn = language_def (cu->language); | |
9883 | ||
9884 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9885 | process_die (cu->dies, cu); | |
9886 | ||
9887 | /* For now fudge the Go package. */ | |
9888 | if (cu->language == language_go) | |
9889 | fixup_go_packaging (cu); | |
9890 | ||
5f48f8f3 | 9891 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9892 | should be complete, and it should now be safe to compute all of the |
9893 | physnames. */ | |
9894 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9895 | |
c9317f21 TT |
9896 | if (cu->language == language_rust) |
9897 | rust_union_quirks (cu); | |
9898 | ||
f4dc4d17 DE |
9899 | /* TUs share symbol tables. |
9900 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9901 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9902 | this TU's symbols to the existing symtab. */ | |
8adb8487 TT |
9903 | type_unit_group_unshareable *tug_unshare = |
9904 | dwarf2_per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); | |
9905 | if (tug_unshare->compunit_symtab == NULL) | |
45cfd468 | 9906 | { |
c24bdb02 KS |
9907 | buildsym_compunit *builder = cu->get_builder (); |
9908 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9909 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9910 | |
43f3e411 | 9911 | if (cust != NULL) |
f4dc4d17 DE |
9912 | { |
9913 | /* Set symtab language to language from DW_AT_language. If the | |
9914 | compilation is from a C file generated by language preprocessors, | |
9915 | do not set the language if it was already deduced by | |
9916 | start_subfile. */ | |
43f3e411 DE |
9917 | if (!(cu->language == language_c |
9918 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9919 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9920 | } |
9921 | } | |
9922 | else | |
9923 | { | |
c24bdb02 | 9924 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 9925 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
9926 | } |
9927 | ||
af758d11 | 9928 | dwarf2_per_objfile->set_symtab (per_cu, cust); |
804d2729 TT |
9929 | |
9930 | /* Not needed any more. */ | |
c24bdb02 | 9931 | cu->reset_builder (); |
c906108c SS |
9932 | } |
9933 | ||
95554aad TT |
9934 | /* Process an imported unit DIE. */ |
9935 | ||
9936 | static void | |
9937 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9938 | { | |
9939 | struct attribute *attr; | |
9940 | ||
f4dc4d17 DE |
9941 | /* For now we don't handle imported units in type units. */ |
9942 | if (cu->per_cu->is_debug_types) | |
9943 | { | |
9944 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9945 | " supported in type units [in module %s]"), | |
5e22e966 | 9946 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
9947 | } |
9948 | ||
95554aad TT |
9949 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9950 | if (attr != NULL) | |
9951 | { | |
0826b30a | 9952 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 9953 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 9954 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 9955 | dwarf2_per_cu_data *per_cu |
ab432490 | 9956 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 9957 | |
58990295 TV |
9958 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9959 | into another compilation unit, at root level. Regard this as a hint, | |
9960 | and ignore it. */ | |
9961 | if (die->parent && die->parent->parent == NULL | |
9962 | && per_cu->unit_type == DW_UT_compile | |
9963 | && per_cu->lang == language_cplus) | |
9964 | return; | |
9965 | ||
69d751e3 | 9966 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 9967 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 9968 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 9969 | |
ae640021 | 9970 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9971 | } |
9972 | } | |
9973 | ||
4c8aa72d PA |
9974 | /* RAII object that represents a process_die scope: i.e., |
9975 | starts/finishes processing a DIE. */ | |
9976 | class process_die_scope | |
adde2bff | 9977 | { |
4c8aa72d PA |
9978 | public: |
9979 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9980 | : m_die (die), m_cu (cu) | |
9981 | { | |
9982 | /* We should only be processing DIEs not already in process. */ | |
9983 | gdb_assert (!m_die->in_process); | |
9984 | m_die->in_process = true; | |
9985 | } | |
8c3cb9fa | 9986 | |
4c8aa72d PA |
9987 | ~process_die_scope () |
9988 | { | |
9989 | m_die->in_process = false; | |
9990 | ||
9991 | /* If we're done processing the DIE for the CU that owns the line | |
9992 | header, we don't need the line header anymore. */ | |
9993 | if (m_cu->line_header_die_owner == m_die) | |
9994 | { | |
9995 | delete m_cu->line_header; | |
9996 | m_cu->line_header = NULL; | |
9997 | m_cu->line_header_die_owner = NULL; | |
9998 | } | |
9999 | } | |
10000 | ||
10001 | private: | |
10002 | die_info *m_die; | |
10003 | dwarf2_cu *m_cu; | |
10004 | }; | |
adde2bff | 10005 | |
c906108c SS |
10006 | /* Process a die and its children. */ |
10007 | ||
10008 | static void | |
e7c27a73 | 10009 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10010 | { |
4c8aa72d | 10011 | process_die_scope scope (die, cu); |
adde2bff | 10012 | |
c906108c SS |
10013 | switch (die->tag) |
10014 | { | |
10015 | case DW_TAG_padding: | |
10016 | break; | |
10017 | case DW_TAG_compile_unit: | |
95554aad | 10018 | case DW_TAG_partial_unit: |
e7c27a73 | 10019 | read_file_scope (die, cu); |
c906108c | 10020 | break; |
348e048f DE |
10021 | case DW_TAG_type_unit: |
10022 | read_type_unit_scope (die, cu); | |
10023 | break; | |
c906108c | 10024 | case DW_TAG_subprogram: |
0a4b0913 AB |
10025 | /* Nested subprograms in Fortran get a prefix. */ |
10026 | if (cu->language == language_fortran | |
10027 | && die->parent != NULL | |
10028 | && die->parent->tag == DW_TAG_subprogram) | |
10029 | cu->processing_has_namespace_info = true; | |
10030 | /* Fall through. */ | |
c906108c | 10031 | case DW_TAG_inlined_subroutine: |
edb3359d | 10032 | read_func_scope (die, cu); |
c906108c SS |
10033 | break; |
10034 | case DW_TAG_lexical_block: | |
14898363 L |
10035 | case DW_TAG_try_block: |
10036 | case DW_TAG_catch_block: | |
e7c27a73 | 10037 | read_lexical_block_scope (die, cu); |
c906108c | 10038 | break; |
216f72a1 | 10039 | case DW_TAG_call_site: |
96408a79 SA |
10040 | case DW_TAG_GNU_call_site: |
10041 | read_call_site_scope (die, cu); | |
10042 | break; | |
c906108c | 10043 | case DW_TAG_class_type: |
680b30c7 | 10044 | case DW_TAG_interface_type: |
c906108c SS |
10045 | case DW_TAG_structure_type: |
10046 | case DW_TAG_union_type: | |
134d01f1 | 10047 | process_structure_scope (die, cu); |
c906108c SS |
10048 | break; |
10049 | case DW_TAG_enumeration_type: | |
134d01f1 | 10050 | process_enumeration_scope (die, cu); |
c906108c | 10051 | break; |
134d01f1 | 10052 | |
f792889a DJ |
10053 | /* These dies have a type, but processing them does not create |
10054 | a symbol or recurse to process the children. Therefore we can | |
10055 | read them on-demand through read_type_die. */ | |
c906108c | 10056 | case DW_TAG_subroutine_type: |
72019c9c | 10057 | case DW_TAG_set_type: |
c906108c | 10058 | case DW_TAG_array_type: |
c906108c | 10059 | case DW_TAG_pointer_type: |
c906108c | 10060 | case DW_TAG_ptr_to_member_type: |
c906108c | 10061 | case DW_TAG_reference_type: |
4297a3f0 | 10062 | case DW_TAG_rvalue_reference_type: |
c906108c | 10063 | case DW_TAG_string_type: |
c906108c | 10064 | break; |
134d01f1 | 10065 | |
c906108c | 10066 | case DW_TAG_base_type: |
a02abb62 | 10067 | case DW_TAG_subrange_type: |
cb249c71 | 10068 | case DW_TAG_typedef: |
134d01f1 DJ |
10069 | /* Add a typedef symbol for the type definition, if it has a |
10070 | DW_AT_name. */ | |
f792889a | 10071 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10072 | break; |
c906108c | 10073 | case DW_TAG_common_block: |
e7c27a73 | 10074 | read_common_block (die, cu); |
c906108c SS |
10075 | break; |
10076 | case DW_TAG_common_inclusion: | |
10077 | break; | |
d9fa45fe | 10078 | case DW_TAG_namespace: |
9068261f | 10079 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10080 | read_namespace (die, cu); |
d9fa45fe | 10081 | break; |
5d7cb8df | 10082 | case DW_TAG_module: |
9068261f | 10083 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10084 | read_module (die, cu); |
10085 | break; | |
d9fa45fe | 10086 | case DW_TAG_imported_declaration: |
9068261f | 10087 | cu->processing_has_namespace_info = true; |
74921315 KS |
10088 | if (read_namespace_alias (die, cu)) |
10089 | break; | |
86a73007 TT |
10090 | /* The declaration is not a global namespace alias. */ |
10091 | /* Fall through. */ | |
d9fa45fe | 10092 | case DW_TAG_imported_module: |
9068261f | 10093 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10094 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10095 | || cu->language != language_fortran)) | |
b98664d3 | 10096 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10097 | dwarf_tag_name (die->tag)); |
10098 | read_import_statement (die, cu); | |
d9fa45fe | 10099 | break; |
95554aad TT |
10100 | |
10101 | case DW_TAG_imported_unit: | |
10102 | process_imported_unit_die (die, cu); | |
10103 | break; | |
10104 | ||
71a3c369 TT |
10105 | case DW_TAG_variable: |
10106 | read_variable (die, cu); | |
10107 | break; | |
10108 | ||
c906108c | 10109 | default: |
e7c27a73 | 10110 | new_symbol (die, NULL, cu); |
c906108c SS |
10111 | break; |
10112 | } | |
10113 | } | |
ca69b9e6 DE |
10114 | \f |
10115 | /* DWARF name computation. */ | |
c906108c | 10116 | |
94af9270 KS |
10117 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10118 | needs to have the name of the scope prepended to the name listed in the | |
10119 | die. */ | |
10120 | ||
10121 | static int | |
10122 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10123 | { | |
1c809c68 TT |
10124 | struct attribute *attr; |
10125 | ||
94af9270 KS |
10126 | switch (die->tag) |
10127 | { | |
10128 | case DW_TAG_namespace: | |
10129 | case DW_TAG_typedef: | |
10130 | case DW_TAG_class_type: | |
10131 | case DW_TAG_interface_type: | |
10132 | case DW_TAG_structure_type: | |
10133 | case DW_TAG_union_type: | |
10134 | case DW_TAG_enumeration_type: | |
10135 | case DW_TAG_enumerator: | |
10136 | case DW_TAG_subprogram: | |
08a76f8a | 10137 | case DW_TAG_inlined_subroutine: |
94af9270 | 10138 | case DW_TAG_member: |
74921315 | 10139 | case DW_TAG_imported_declaration: |
94af9270 KS |
10140 | return 1; |
10141 | ||
10142 | case DW_TAG_variable: | |
c2b0a229 | 10143 | case DW_TAG_constant: |
94af9270 KS |
10144 | /* We only need to prefix "globally" visible variables. These include |
10145 | any variable marked with DW_AT_external or any variable that | |
10146 | lives in a namespace. [Variables in anonymous namespaces | |
10147 | require prefixing, but they are not DW_AT_external.] */ | |
10148 | ||
10149 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10150 | { | |
10151 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10152 | |
94af9270 KS |
10153 | return die_needs_namespace (die_specification (die, &spec_cu), |
10154 | spec_cu); | |
10155 | } | |
10156 | ||
1c809c68 | 10157 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10158 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10159 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10160 | return 0; |
10161 | /* A variable in a lexical block of some kind does not need a | |
10162 | namespace, even though in C++ such variables may be external | |
10163 | and have a mangled name. */ | |
10164 | if (die->parent->tag == DW_TAG_lexical_block | |
10165 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10166 | || die->parent->tag == DW_TAG_catch_block |
10167 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10168 | return 0; |
10169 | return 1; | |
94af9270 KS |
10170 | |
10171 | default: | |
10172 | return 0; | |
10173 | } | |
10174 | } | |
10175 | ||
73b9be8b KS |
10176 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10177 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10178 | defined for the given DIE. */ | |
10179 | ||
10180 | static struct attribute * | |
10181 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10182 | { | |
10183 | struct attribute *attr; | |
10184 | ||
10185 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10186 | if (attr == NULL) | |
10187 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10188 | ||
10189 | return attr; | |
10190 | } | |
10191 | ||
10192 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10193 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10194 | defined for the given DIE. */ | |
10195 | ||
10196 | static const char * | |
10197 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10198 | { | |
10199 | const char *linkage_name; | |
10200 | ||
10201 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10202 | if (linkage_name == NULL) | |
10203 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10204 | ||
787de330 TT |
10205 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10206 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10207 | if (cu->language == language_rust && linkage_name != NULL | |
10208 | && strchr (linkage_name, '{') != NULL) | |
10209 | linkage_name = NULL; | |
10210 | ||
73b9be8b KS |
10211 | return linkage_name; |
10212 | } | |
10213 | ||
94af9270 | 10214 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10215 | compute the physname for the object, which include a method's: |
9c37b5ae | 10216 | - formal parameters (C++), |
a766d390 | 10217 | - receiver type (Go), |
a766d390 DE |
10218 | |
10219 | The term "physname" is a bit confusing. | |
10220 | For C++, for example, it is the demangled name. | |
10221 | For Go, for example, it's the mangled name. | |
94af9270 | 10222 | |
af6b7be1 JB |
10223 | For Ada, return the DIE's linkage name rather than the fully qualified |
10224 | name. PHYSNAME is ignored.. | |
10225 | ||
5989a64e | 10226 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10227 | canonicalized. */ |
94af9270 KS |
10228 | |
10229 | static const char * | |
15d034d0 TT |
10230 | dwarf2_compute_name (const char *name, |
10231 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10232 | int physname) |
10233 | { | |
5e22e966 | 10234 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10235 | |
94af9270 KS |
10236 | if (name == NULL) |
10237 | name = dwarf2_name (die, cu); | |
10238 | ||
2ee7123e DE |
10239 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10240 | but otherwise compute it by typename_concat inside GDB. | |
10241 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10242 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10243 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10244 | will set the demangled name to the result of dwarf2_full_name, and it is |
10245 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10246 | if (cu->language == language_ada |
10247 | || (cu->language == language_fortran && physname)) | |
10248 | { | |
10249 | /* For Ada unit, we prefer the linkage name over the name, as | |
10250 | the former contains the exported name, which the user expects | |
10251 | to be able to reference. Ideally, we want the user to be able | |
10252 | to reference this entity using either natural or linkage name, | |
10253 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10254 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10255 | |
2ee7123e DE |
10256 | if (linkage_name != NULL) |
10257 | return linkage_name; | |
f55ee35c JK |
10258 | } |
10259 | ||
94af9270 KS |
10260 | /* These are the only languages we know how to qualify names in. */ |
10261 | if (name != NULL | |
9c37b5ae | 10262 | && (cu->language == language_cplus |
c44af4eb TT |
10263 | || cu->language == language_fortran || cu->language == language_d |
10264 | || cu->language == language_rust)) | |
94af9270 KS |
10265 | { |
10266 | if (die_needs_namespace (die, cu)) | |
10267 | { | |
0d5cff50 | 10268 | const char *prefix; |
34a68019 | 10269 | const char *canonical_name = NULL; |
94af9270 | 10270 | |
d7e74731 PA |
10271 | string_file buf; |
10272 | ||
94af9270 | 10273 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10274 | if (*prefix != '\0') |
10275 | { | |
43816ebc TT |
10276 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10277 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10278 | |
43816ebc | 10279 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10280 | } |
10281 | else | |
d7e74731 | 10282 | buf.puts (name); |
94af9270 | 10283 | |
98bfdba5 PA |
10284 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10285 | as children with DW_TAG_template_type_param or | |
10286 | DW_TAG_value_type_param. If the latter, add them to the name | |
10287 | here. If the name already has template parameters, then | |
10288 | skip this step; some versions of GCC emit both, and | |
10289 | it is more efficient to use the pre-computed name. | |
10290 | ||
10291 | Something to keep in mind about this process: it is very | |
10292 | unlikely, or in some cases downright impossible, to produce | |
10293 | something that will match the mangled name of a function. | |
10294 | If the definition of the function has the same debug info, | |
10295 | we should be able to match up with it anyway. But fallbacks | |
10296 | using the minimal symbol, for instance to find a method | |
10297 | implemented in a stripped copy of libstdc++, will not work. | |
10298 | If we do not have debug info for the definition, we will have to | |
10299 | match them up some other way. | |
10300 | ||
10301 | When we do name matching there is a related problem with function | |
10302 | templates; two instantiated function templates are allowed to | |
10303 | differ only by their return types, which we do not add here. */ | |
10304 | ||
10305 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10306 | { | |
10307 | struct attribute *attr; | |
10308 | struct die_info *child; | |
10309 | int first = 1; | |
10310 | ||
10311 | die->building_fullname = 1; | |
10312 | ||
10313 | for (child = die->child; child != NULL; child = child->sibling) | |
10314 | { | |
10315 | struct type *type; | |
12df843f | 10316 | LONGEST value; |
d521ce57 | 10317 | const gdb_byte *bytes; |
98bfdba5 PA |
10318 | struct dwarf2_locexpr_baton *baton; |
10319 | struct value *v; | |
10320 | ||
10321 | if (child->tag != DW_TAG_template_type_param | |
10322 | && child->tag != DW_TAG_template_value_param) | |
10323 | continue; | |
10324 | ||
10325 | if (first) | |
10326 | { | |
d7e74731 | 10327 | buf.puts ("<"); |
98bfdba5 PA |
10328 | first = 0; |
10329 | } | |
10330 | else | |
d7e74731 | 10331 | buf.puts (", "); |
98bfdba5 PA |
10332 | |
10333 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10334 | if (attr == NULL) | |
10335 | { | |
b98664d3 | 10336 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10337 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10338 | continue; |
10339 | } | |
10340 | type = die_type (child, cu); | |
10341 | ||
10342 | if (child->tag == DW_TAG_template_type_param) | |
10343 | { | |
c1ec8cea TT |
10344 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10345 | &type_print_raw_options); | |
98bfdba5 PA |
10346 | continue; |
10347 | } | |
10348 | ||
10349 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10350 | if (attr == NULL) | |
10351 | { | |
b98664d3 | 10352 | complaint (_("template parameter missing " |
3e43a32a | 10353 | "DW_AT_const_value")); |
d7e74731 | 10354 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10355 | continue; |
10356 | } | |
10357 | ||
10358 | dwarf2_const_value_attr (attr, type, name, | |
10359 | &cu->comp_unit_obstack, cu, | |
10360 | &value, &bytes, &baton); | |
10361 | ||
10362 | if (TYPE_NOSIGN (type)) | |
10363 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10364 | changed, this can use value_print instead. */ | |
d7e74731 | 10365 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10366 | else |
10367 | { | |
10368 | struct value_print_options opts; | |
10369 | ||
10370 | if (baton != NULL) | |
10371 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10372 | baton->data, | |
10373 | baton->size, | |
9f47c707 SM |
10374 | baton->per_cu, |
10375 | baton->per_objfile); | |
98bfdba5 PA |
10376 | else if (bytes != NULL) |
10377 | { | |
10378 | v = allocate_value (type); | |
10379 | memcpy (value_contents_writeable (v), bytes, | |
10380 | TYPE_LENGTH (type)); | |
10381 | } | |
10382 | else | |
10383 | v = value_from_longest (type, value); | |
10384 | ||
3e43a32a MS |
10385 | /* Specify decimal so that we do not depend on |
10386 | the radix. */ | |
98bfdba5 PA |
10387 | get_formatted_print_options (&opts, 'd'); |
10388 | opts.raw = 1; | |
d7e74731 | 10389 | value_print (v, &buf, &opts); |
98bfdba5 | 10390 | release_value (v); |
98bfdba5 PA |
10391 | } |
10392 | } | |
10393 | ||
10394 | die->building_fullname = 0; | |
10395 | ||
10396 | if (!first) | |
10397 | { | |
10398 | /* Close the argument list, with a space if necessary | |
10399 | (nested templates). */ | |
d7e74731 PA |
10400 | if (!buf.empty () && buf.string ().back () == '>') |
10401 | buf.puts (" >"); | |
98bfdba5 | 10402 | else |
d7e74731 | 10403 | buf.puts (">"); |
98bfdba5 PA |
10404 | } |
10405 | } | |
10406 | ||
9c37b5ae | 10407 | /* For C++ methods, append formal parameter type |
94af9270 | 10408 | information, if PHYSNAME. */ |
6e70227d | 10409 | |
94af9270 | 10410 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10411 | && cu->language == language_cplus) |
94af9270 KS |
10412 | { |
10413 | struct type *type = read_type_die (die, cu); | |
10414 | ||
d7e74731 | 10415 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10416 | &type_print_raw_options); |
94af9270 | 10417 | |
9c37b5ae | 10418 | if (cu->language == language_cplus) |
94af9270 | 10419 | { |
60430eff DJ |
10420 | /* Assume that an artificial first parameter is |
10421 | "this", but do not crash if it is not. RealView | |
10422 | marks unnamed (and thus unused) parameters as | |
10423 | artificial; there is no way to differentiate | |
10424 | the two cases. */ | |
1f704f76 | 10425 | if (type->num_fields () > 0 |
94af9270 | 10426 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
78134374 | 10427 | && TYPE_FIELD_TYPE (type, 0)->code () == TYPE_CODE_PTR |
3e43a32a MS |
10428 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10429 | 0)))) | |
d7e74731 | 10430 | buf.puts (" const"); |
94af9270 KS |
10431 | } |
10432 | } | |
10433 | ||
d7e74731 | 10434 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10435 | |
10436 | if (cu->language == language_cplus) | |
34a68019 | 10437 | canonical_name |
322a8516 | 10438 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10439 | objfile); |
34a68019 TT |
10440 | |
10441 | /* If we only computed INTERMEDIATE_NAME, or if | |
10442 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10443 | intern it. */ |
322a8516 | 10444 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10445 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10446 | else |
10447 | name = canonical_name; | |
94af9270 KS |
10448 | } |
10449 | } | |
10450 | ||
10451 | return name; | |
10452 | } | |
10453 | ||
0114d602 DJ |
10454 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10455 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10456 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10457 | not have a name. NAME may either be from a previous call to |
10458 | dwarf2_name or NULL. | |
10459 | ||
9c37b5ae | 10460 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10461 | |
10462 | static const char * | |
15d034d0 | 10463 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10464 | { |
94af9270 KS |
10465 | return dwarf2_compute_name (name, die, cu, 0); |
10466 | } | |
0114d602 | 10467 | |
94af9270 KS |
10468 | /* Construct a physname for the given DIE in CU. NAME may either be |
10469 | from a previous call to dwarf2_name or NULL. The result will be | |
10470 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10471 | name. | |
0114d602 | 10472 | |
9c37b5ae | 10473 | The output string will be canonicalized (if C++). */ |
0114d602 | 10474 | |
94af9270 | 10475 | static const char * |
15d034d0 | 10476 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10477 | { |
5e22e966 | 10478 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10479 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10480 | int need_copy = 1; |
10481 | ||
10482 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10483 | on its own. */ | |
10484 | if (!die_needs_namespace (die, cu)) | |
10485 | return dwarf2_compute_name (name, die, cu, 1); | |
10486 | ||
906bb4c5 TT |
10487 | if (cu->language != language_rust) |
10488 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10489 | |
10490 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10491 | has computed. */ | |
791afaa2 | 10492 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10493 | if (mangled != NULL) |
900e11f9 | 10494 | { |
900e11f9 | 10495 | |
59cc4834 JB |
10496 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10497 | { | |
10498 | /* Do nothing (do not demangle the symbol name). */ | |
10499 | } | |
10500 | else if (cu->language == language_go) | |
a766d390 | 10501 | { |
5e2db402 TT |
10502 | /* This is a lie, but we already lie to the caller new_symbol. |
10503 | new_symbol assumes we return the mangled name. | |
a766d390 | 10504 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10505 | } |
10506 | else | |
10507 | { | |
0eb876f5 JB |
10508 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10509 | their return type. It is easier for GDB users to search | |
10510 | for such functions as `name(params)' than `long name(params)'. | |
10511 | In such case the minimal symbol names do not match the full | |
10512 | symbol names but for template functions there is never a need | |
10513 | to look up their definition from their declaration so | |
10514 | the only disadvantage remains the minimal symbol variant | |
10515 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10516 | demangled.reset (gdb_demangle (mangled, |
10517 | (DMGL_PARAMS | DMGL_ANSI | |
10518 | | DMGL_RET_DROP))); | |
a766d390 | 10519 | } |
900e11f9 | 10520 | if (demangled) |
791afaa2 | 10521 | canon = demangled.get (); |
900e11f9 JK |
10522 | else |
10523 | { | |
10524 | canon = mangled; | |
10525 | need_copy = 0; | |
10526 | } | |
10527 | } | |
10528 | ||
10529 | if (canon == NULL || check_physname) | |
10530 | { | |
10531 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10532 | ||
10533 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10534 | { | |
10535 | /* It may not mean a bug in GDB. The compiler could also | |
10536 | compute DW_AT_linkage_name incorrectly. But in such case | |
10537 | GDB would need to be bug-to-bug compatible. */ | |
10538 | ||
b98664d3 | 10539 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10540 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10541 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10542 | objfile_name (objfile)); |
900e11f9 JK |
10543 | |
10544 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10545 | is available here - over computed PHYSNAME. It is safer | |
10546 | against both buggy GDB and buggy compilers. */ | |
10547 | ||
10548 | retval = canon; | |
10549 | } | |
10550 | else | |
10551 | { | |
10552 | retval = physname; | |
10553 | need_copy = 0; | |
10554 | } | |
10555 | } | |
10556 | else | |
10557 | retval = canon; | |
10558 | ||
10559 | if (need_copy) | |
be1e3d3e | 10560 | retval = objfile->intern (retval); |
900e11f9 | 10561 | |
900e11f9 | 10562 | return retval; |
0114d602 DJ |
10563 | } |
10564 | ||
74921315 KS |
10565 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10566 | a new symbol for it. | |
10567 | ||
10568 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10569 | ||
10570 | static int | |
10571 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10572 | { | |
10573 | struct attribute *attr; | |
10574 | ||
10575 | /* If the die does not have a name, this is not a namespace | |
10576 | alias. */ | |
10577 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10578 | if (attr != NULL) | |
10579 | { | |
10580 | int num; | |
10581 | struct die_info *d = die; | |
10582 | struct dwarf2_cu *imported_cu = cu; | |
10583 | ||
10584 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10585 | keep inspecting DIEs until we hit the underlying import. */ | |
10586 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10587 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10588 | { | |
10589 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10590 | if (attr == NULL) | |
10591 | break; | |
10592 | ||
10593 | d = follow_die_ref (d, attr, &imported_cu); | |
10594 | if (d->tag != DW_TAG_imported_declaration) | |
10595 | break; | |
10596 | } | |
10597 | ||
10598 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10599 | { | |
b98664d3 | 10600 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10601 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10602 | return 0; |
10603 | } | |
10604 | ||
10605 | if (attr != NULL) | |
10606 | { | |
10607 | struct type *type; | |
0826b30a | 10608 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10609 | |
aa66c379 | 10610 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10611 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10612 | { |
10613 | /* This declaration is a global namespace alias. Add | |
10614 | a symbol for it whose type is the aliased namespace. */ | |
10615 | new_symbol (die, type, cu); | |
10616 | return 1; | |
10617 | } | |
10618 | } | |
10619 | } | |
10620 | ||
10621 | return 0; | |
10622 | } | |
10623 | ||
22cee43f | 10624 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10625 | current context for CU. |
22cee43f PMR |
10626 | |
10627 | For Ada, imported declarations can materialize renamings, which *may* be | |
10628 | global. However it is impossible (for now?) in DWARF to distinguish | |
10629 | "external" imported declarations and "static" ones. As all imported | |
10630 | declarations seem to be static in all other languages, make them all CU-wide | |
10631 | global only in Ada. */ | |
10632 | ||
10633 | static struct using_direct ** | |
804d2729 | 10634 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10635 | { |
c24bdb02 KS |
10636 | if (cu->language == language_ada |
10637 | && cu->get_builder ()->outermost_context_p ()) | |
10638 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10639 | else |
c24bdb02 | 10640 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10641 | } |
10642 | ||
27aa8d6a SW |
10643 | /* Read the import statement specified by the given die and record it. */ |
10644 | ||
10645 | static void | |
10646 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10647 | { | |
5e22e966 | 10648 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10649 | struct attribute *import_attr; |
32019081 | 10650 | struct die_info *imported_die, *child_die; |
de4affc9 | 10651 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10652 | const char *imported_name; |
794684b6 | 10653 | const char *imported_name_prefix; |
13387711 SW |
10654 | const char *canonical_name; |
10655 | const char *import_alias; | |
10656 | const char *imported_declaration = NULL; | |
794684b6 | 10657 | const char *import_prefix; |
eb1e02fd | 10658 | std::vector<const char *> excludes; |
13387711 | 10659 | |
27aa8d6a SW |
10660 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10661 | if (import_attr == NULL) | |
10662 | { | |
b98664d3 | 10663 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10664 | dwarf_tag_name (die->tag)); |
10665 | return; | |
10666 | } | |
10667 | ||
de4affc9 CC |
10668 | imported_cu = cu; |
10669 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10670 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10671 | if (imported_name == NULL) |
10672 | { | |
10673 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10674 | ||
10675 | The import in the following code: | |
10676 | namespace A | |
10677 | { | |
10678 | typedef int B; | |
10679 | } | |
10680 | ||
10681 | int main () | |
10682 | { | |
10683 | using A::B; | |
10684 | B b; | |
10685 | return b; | |
10686 | } | |
10687 | ||
10688 | ... | |
10689 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10690 | <52> DW_AT_decl_file : 1 | |
10691 | <53> DW_AT_decl_line : 6 | |
10692 | <54> DW_AT_import : <0x75> | |
10693 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10694 | <59> DW_AT_name : B | |
10695 | <5b> DW_AT_decl_file : 1 | |
10696 | <5c> DW_AT_decl_line : 2 | |
10697 | <5d> DW_AT_type : <0x6e> | |
10698 | ... | |
10699 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10700 | <76> DW_AT_byte_size : 4 | |
10701 | <77> DW_AT_encoding : 5 (signed) | |
10702 | ||
10703 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10704 | This case will be ignored until the gcc bug is fixed. */ | |
10705 | return; | |
10706 | } | |
10707 | ||
82856980 SW |
10708 | /* Figure out the local name after import. */ |
10709 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10710 | |
794684b6 SW |
10711 | /* Figure out where the statement is being imported to. */ |
10712 | import_prefix = determine_prefix (die, cu); | |
10713 | ||
10714 | /* Figure out what the scope of the imported die is and prepend it | |
10715 | to the name of the imported die. */ | |
de4affc9 | 10716 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10717 | |
f55ee35c JK |
10718 | if (imported_die->tag != DW_TAG_namespace |
10719 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10720 | { |
13387711 SW |
10721 | imported_declaration = imported_name; |
10722 | canonical_name = imported_name_prefix; | |
794684b6 | 10723 | } |
13387711 | 10724 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10725 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10726 | imported_name_prefix, |
10727 | (cu->language == language_d ? "." : "::"), | |
10728 | imported_name, (char *) NULL); | |
13387711 SW |
10729 | else |
10730 | canonical_name = imported_name; | |
794684b6 | 10731 | |
32019081 JK |
10732 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10733 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10734 | child_die = child_die->sibling) |
32019081 JK |
10735 | { |
10736 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10737 | represented by an imported module entry with an import attribute | |
10738 | referring to the module and owned entries corresponding to those | |
10739 | entities that are renamed as part of being imported. */ | |
10740 | ||
10741 | if (child_die->tag != DW_TAG_imported_declaration) | |
10742 | { | |
b98664d3 | 10743 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10744 | "- DIE at %s [in module %s]"), |
10745 | sect_offset_str (child_die->sect_off), | |
10746 | objfile_name (objfile)); | |
32019081 JK |
10747 | continue; |
10748 | } | |
10749 | ||
10750 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10751 | if (import_attr == NULL) | |
10752 | { | |
b98664d3 | 10753 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10754 | dwarf_tag_name (child_die->tag)); |
10755 | continue; | |
10756 | } | |
10757 | ||
10758 | imported_cu = cu; | |
10759 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10760 | &imported_cu); | |
10761 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10762 | if (imported_name == NULL) | |
10763 | { | |
b98664d3 | 10764 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10765 | "imported name - DIE at %s [in module %s]"), |
10766 | sect_offset_str (child_die->sect_off), | |
10767 | objfile_name (objfile)); | |
32019081 JK |
10768 | continue; |
10769 | } | |
10770 | ||
eb1e02fd | 10771 | excludes.push_back (imported_name); |
32019081 JK |
10772 | |
10773 | process_die (child_die, cu); | |
10774 | } | |
10775 | ||
804d2729 | 10776 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10777 | import_prefix, |
10778 | canonical_name, | |
10779 | import_alias, | |
10780 | imported_declaration, | |
10781 | excludes, | |
10782 | 0, | |
10783 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10784 | } |
10785 | ||
5230b05a WT |
10786 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10787 | types, but gives them a size of zero. Starting with version 14, | |
10788 | ICC is compatible with GCC. */ | |
10789 | ||
9068261f | 10790 | static bool |
5230b05a WT |
10791 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10792 | { | |
10793 | if (!cu->checked_producer) | |
10794 | check_producer (cu); | |
10795 | ||
10796 | return cu->producer_is_icc_lt_14; | |
10797 | } | |
10798 | ||
eb77c9df AB |
10799 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10800 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10801 | which says that void functions should not have a DW_AT_type. */ | |
10802 | ||
10803 | static bool | |
10804 | producer_is_icc (struct dwarf2_cu *cu) | |
10805 | { | |
10806 | if (!cu->checked_producer) | |
10807 | check_producer (cu); | |
10808 | ||
10809 | return cu->producer_is_icc; | |
10810 | } | |
10811 | ||
1b80a9fa JK |
10812 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10813 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10814 | this, it was first present in GCC release 4.3.0. */ | |
10815 | ||
9068261f | 10816 | static bool |
1b80a9fa JK |
10817 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10818 | { | |
10819 | if (!cu->checked_producer) | |
10820 | check_producer (cu); | |
10821 | ||
10822 | return cu->producer_is_gcc_lt_4_3; | |
10823 | } | |
10824 | ||
d721ba37 PA |
10825 | static file_and_directory |
10826 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10827 | { |
d721ba37 PA |
10828 | file_and_directory res; |
10829 | ||
9291a0cd TT |
10830 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10831 | is not a source language identifier. */ | |
d721ba37 PA |
10832 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10833 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10834 | |
d721ba37 PA |
10835 | if (res.comp_dir == NULL |
10836 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10837 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10838 | { |
d721ba37 PA |
10839 | res.comp_dir_storage = ldirname (res.name); |
10840 | if (!res.comp_dir_storage.empty ()) | |
10841 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10842 | } |
d721ba37 | 10843 | if (res.comp_dir != NULL) |
9291a0cd TT |
10844 | { |
10845 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10846 | directory, get rid of it. */ | |
d721ba37 | 10847 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10848 | |
d721ba37 PA |
10849 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10850 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10851 | } |
10852 | ||
d721ba37 PA |
10853 | if (res.name == NULL) |
10854 | res.name = "<unknown>"; | |
10855 | ||
10856 | return res; | |
9291a0cd TT |
10857 | } |
10858 | ||
f4dc4d17 DE |
10859 | /* Handle DW_AT_stmt_list for a compilation unit. |
10860 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10861 | COMP_DIR is the compilation directory. LOWPC is passed to |
10862 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10863 | |
10864 | static void | |
10865 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10866 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10867 | { |
5e22e966 | 10868 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
2ab95328 | 10869 | struct attribute *attr; |
527f3840 JK |
10870 | struct line_header line_header_local; |
10871 | hashval_t line_header_local_hash; | |
527f3840 JK |
10872 | void **slot; |
10873 | int decode_mapping; | |
2ab95328 | 10874 | |
f4dc4d17 DE |
10875 | gdb_assert (! cu->per_cu->is_debug_types); |
10876 | ||
2ab95328 | 10877 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10878 | if (attr == NULL) |
10879 | return; | |
10880 | ||
9c541725 | 10881 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10882 | |
10883 | /* The line header hash table is only created if needed (it exists to | |
10884 | prevent redundant reading of the line table for partial_units). | |
10885 | If we're given a partial_unit, we'll need it. If we're given a | |
10886 | compile_unit, then use the line header hash table if it's already | |
10887 | created, but don't create one just yet. */ | |
10888 | ||
5989a64e | 10889 | if (dwarf2_per_objfile->per_bfd->line_header_hash == NULL |
527f3840 | 10890 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10891 | { |
5989a64e | 10892 | dwarf2_per_objfile->per_bfd->line_header_hash |
d15acc42 TT |
10893 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10894 | line_header_eq_voidp, | |
10895 | free_line_header_voidp, | |
10896 | xcalloc, xfree)); | |
527f3840 | 10897 | } |
2ab95328 | 10898 | |
9c541725 | 10899 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10900 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10901 | line_header_local_hash = line_header_hash (&line_header_local); | |
5989a64e | 10902 | if (dwarf2_per_objfile->per_bfd->line_header_hash != NULL) |
527f3840 | 10903 | { |
5989a64e | 10904 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->per_bfd->line_header_hash.get (), |
527f3840 JK |
10905 | &line_header_local, |
10906 | line_header_local_hash, NO_INSERT); | |
10907 | ||
10908 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10909 | is not present in *SLOT (since if there is something in *SLOT then | |
10910 | it will be for a partial_unit). */ | |
10911 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10912 | { |
527f3840 | 10913 | gdb_assert (*slot != NULL); |
9a3c8263 | 10914 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10915 | return; |
dee91e82 | 10916 | } |
2ab95328 | 10917 | } |
527f3840 JK |
10918 | |
10919 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10920 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10921 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10922 | if (lh == NULL) | |
527f3840 | 10923 | return; |
4c8aa72d PA |
10924 | |
10925 | cu->line_header = lh.release (); | |
10926 | cu->line_header_die_owner = die; | |
527f3840 | 10927 | |
5989a64e | 10928 | if (dwarf2_per_objfile->per_bfd->line_header_hash == NULL) |
527f3840 JK |
10929 | slot = NULL; |
10930 | else | |
10931 | { | |
5989a64e | 10932 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->per_bfd->line_header_hash.get (), |
527f3840 JK |
10933 | &line_header_local, |
10934 | line_header_local_hash, INSERT); | |
10935 | gdb_assert (slot != NULL); | |
10936 | } | |
10937 | if (slot != NULL && *slot == NULL) | |
10938 | { | |
10939 | /* This newly decoded line number information unit will be owned | |
10940 | by line_header_hash hash table. */ | |
10941 | *slot = cu->line_header; | |
4c8aa72d | 10942 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10943 | } |
10944 | else | |
10945 | { | |
10946 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10947 | may be already used by multiple CUs. Create only temporary decoded | |
10948 | line_header for this CU - it may happen at most once for each line | |
10949 | number information unit. And if we're not using line_header_hash | |
10950 | then this is what we want as well. */ | |
10951 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10952 | } |
10953 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10954 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10955 | decode_mapping); | |
fff8551c | 10956 | |
2ab95328 TT |
10957 | } |
10958 | ||
95554aad | 10959 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10960 | |
c906108c | 10961 | static void |
e7c27a73 | 10962 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10963 | { |
5e22e966 | 10964 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 10965 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 10966 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10967 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10968 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10969 | struct attribute *attr; | |
c906108c | 10970 | struct die_info *child_die; |
e142c38c | 10971 | CORE_ADDR baseaddr; |
6e70227d | 10972 | |
380618d6 | 10973 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10974 | baseaddr = objfile->text_section_offset (); |
c906108c | 10975 | |
fae299cd | 10976 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10977 | |
10978 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10979 | from finish_block. */ | |
2acceee2 | 10980 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10981 | lowpc = highpc; |
3e29f34a | 10982 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10983 | |
d721ba37 | 10984 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10985 | |
f4b8a18d KW |
10986 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10987 | standardised yet. As a workaround for the language detection we fall | |
10988 | back to the DW_AT_producer string. */ | |
10989 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10990 | cu->language = language_opencl; | |
10991 | ||
3019eac3 DE |
10992 | /* Similar hack for Go. */ |
10993 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10994 | set_cu_language (DW_LANG_Go, cu); | |
10995 | ||
c24bdb02 | 10996 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10997 | |
10998 | /* Decode line number information if present. We do this before | |
10999 | processing child DIEs, so that the line header table is available | |
11000 | for DW_AT_decl_file. */ | |
d721ba37 | 11001 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11002 | |
11003 | /* Process all dies in compilation unit. */ | |
11004 | if (die->child != NULL) | |
11005 | { | |
11006 | child_die = die->child; | |
11007 | while (child_die && child_die->tag) | |
11008 | { | |
11009 | process_die (child_die, cu); | |
436c571c | 11010 | child_die = child_die->sibling; |
3019eac3 DE |
11011 | } |
11012 | } | |
11013 | ||
11014 | /* Decode macro information, if present. Dwarf 2 macro information | |
11015 | refers to information in the line number info statement program | |
11016 | header, so we can only read it if we've read the header | |
11017 | successfully. */ | |
0af92d60 JK |
11018 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11019 | if (attr == NULL) | |
11020 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11021 | if (attr && cu->line_header) |
11022 | { | |
11023 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11024 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11025 | |
43f3e411 | 11026 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11027 | } |
11028 | else | |
11029 | { | |
11030 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11031 | if (attr && cu->line_header) | |
11032 | { | |
11033 | unsigned int macro_offset = DW_UNSND (attr); | |
11034 | ||
43f3e411 | 11035 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11036 | } |
11037 | } | |
3019eac3 DE |
11038 | } |
11039 | ||
c24bdb02 KS |
11040 | void |
11041 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11042 | { |
f4dc4d17 DE |
11043 | struct type_unit_group *tu_group; |
11044 | int first_time; | |
3019eac3 | 11045 | struct attribute *attr; |
9c541725 | 11046 | unsigned int i; |
0186c6a7 | 11047 | struct signatured_type *sig_type; |
3019eac3 | 11048 | |
f4dc4d17 | 11049 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11050 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11051 | |
c24bdb02 | 11052 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11053 | |
f4dc4d17 | 11054 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11055 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11056 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11057 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11058 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11059 | |
11060 | /* If we've already processed this stmt_list there's no real need to | |
11061 | do it again, we could fake it and just recreate the part we need | |
11062 | (file name,index -> symtab mapping). If data shows this optimization | |
11063 | is useful we can do it then. */ | |
8adb8487 TT |
11064 | type_unit_group_unshareable *tug_unshare |
11065 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11066 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11067 | |
11068 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11069 | debug info. */ | |
fff8551c | 11070 | line_header_up lh; |
f4dc4d17 | 11071 | if (attr != NULL) |
3019eac3 | 11072 | { |
9c541725 | 11073 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11074 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11075 | } |
11076 | if (lh == NULL) | |
11077 | { | |
11078 | if (first_time) | |
c24bdb02 | 11079 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11080 | else |
11081 | { | |
8adb8487 | 11082 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11083 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11084 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11085 | m_builder.reset (new struct buildsym_compunit |
11086 | (COMPUNIT_OBJFILE (cust), "", | |
11087 | COMPUNIT_DIRNAME (cust), | |
11088 | compunit_language (cust), | |
11089 | 0, cust)); | |
770479f2 | 11090 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11091 | } |
f4dc4d17 | 11092 | return; |
3019eac3 DE |
11093 | } |
11094 | ||
c24bdb02 KS |
11095 | line_header = lh.release (); |
11096 | line_header_die_owner = die; | |
3019eac3 | 11097 | |
f4dc4d17 DE |
11098 | if (first_time) |
11099 | { | |
c24bdb02 | 11100 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11101 | |
1fd60fc0 DE |
11102 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11103 | still initializing it, and our caller (a few levels up) | |
11104 | process_full_type_unit still needs to know if this is the first | |
11105 | time. */ | |
11106 | ||
8adb8487 | 11107 | tug_unshare->symtabs |
4ac93832 TT |
11108 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11109 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11110 | |
7ba99d21 AT |
11111 | auto &file_names = line_header->file_names (); |
11112 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11113 | { |
7ba99d21 | 11114 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11115 | dwarf2_start_subfile (this, fe.name, |
11116 | fe.include_dir (line_header)); | |
11117 | buildsym_compunit *b = get_builder (); | |
11118 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11119 | { |
4c8aa72d PA |
11120 | /* NOTE: start_subfile will recognize when it's been |
11121 | passed a file it has already seen. So we can't | |
11122 | assume there's a simple mapping from | |
11123 | cu->line_header->file_names to subfiles, plus | |
11124 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11125 | b->get_current_subfile ()->symtab |
11126 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11127 | } |
11128 | ||
c24bdb02 | 11129 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11130 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11131 | } |
11132 | } | |
11133 | else | |
3019eac3 | 11134 | { |
c24bdb02 | 11135 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11136 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11137 | m_builder.reset (new struct buildsym_compunit |
11138 | (COMPUNIT_OBJFILE (cust), "", | |
11139 | COMPUNIT_DIRNAME (cust), | |
11140 | compunit_language (cust), | |
11141 | 0, cust)); | |
770479f2 | 11142 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11143 | |
7ba99d21 AT |
11144 | auto &file_names = line_header->file_names (); |
11145 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11146 | { |
7ba99d21 | 11147 | file_entry &fe = file_names[i]; |
8adb8487 | 11148 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11149 | } |
3019eac3 DE |
11150 | } |
11151 | ||
f4dc4d17 DE |
11152 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11153 | so they don't have a "real" (so to speak) symtab anyway. | |
11154 | There is later code that will assign the main symtab to all symbols | |
11155 | that don't have one. We need to handle the case of a symbol with a | |
11156 | missing symtab (DW_AT_decl_file) anyway. */ | |
11157 | } | |
3019eac3 | 11158 | |
f4dc4d17 DE |
11159 | /* Process DW_TAG_type_unit. |
11160 | For TUs we want to skip the first top level sibling if it's not the | |
11161 | actual type being defined by this TU. In this case the first top | |
11162 | level sibling is there to provide context only. */ | |
3019eac3 | 11163 | |
f4dc4d17 DE |
11164 | static void |
11165 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11166 | { | |
11167 | struct die_info *child_die; | |
3019eac3 | 11168 | |
f4dc4d17 DE |
11169 | prepare_one_comp_unit (cu, die, language_minimal); |
11170 | ||
11171 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11172 | We do this before processing child DIEs, so that the line header table | |
11173 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11174 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11175 | |
11176 | if (die->child != NULL) | |
11177 | { | |
11178 | child_die = die->child; | |
11179 | while (child_die && child_die->tag) | |
11180 | { | |
11181 | process_die (child_die, cu); | |
436c571c | 11182 | child_die = child_die->sibling; |
f4dc4d17 DE |
11183 | } |
11184 | } | |
3019eac3 DE |
11185 | } |
11186 | \f | |
80626a55 DE |
11187 | /* DWO/DWP files. |
11188 | ||
11189 | http://gcc.gnu.org/wiki/DebugFission | |
11190 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11191 | ||
11192 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11193 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11194 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11195 | |
11196 | static hashval_t | |
11197 | hash_dwo_file (const void *item) | |
11198 | { | |
9a3c8263 | 11199 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11200 | hashval_t hash; |
3019eac3 | 11201 | |
a2ce51a0 DE |
11202 | hash = htab_hash_string (dwo_file->dwo_name); |
11203 | if (dwo_file->comp_dir != NULL) | |
11204 | hash += htab_hash_string (dwo_file->comp_dir); | |
11205 | return hash; | |
3019eac3 DE |
11206 | } |
11207 | ||
11208 | static int | |
11209 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11210 | { | |
9a3c8263 SM |
11211 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11212 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11213 | |
a2ce51a0 DE |
11214 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11215 | return 0; | |
11216 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11217 | return lhs->comp_dir == rhs->comp_dir; | |
11218 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11219 | } |
11220 | ||
11221 | /* Allocate a hash table for DWO files. */ | |
11222 | ||
51ac9db5 | 11223 | static htab_up |
298e9637 | 11224 | allocate_dwo_file_hash_table () |
3019eac3 | 11225 | { |
51ac9db5 SM |
11226 | auto delete_dwo_file = [] (void *item) |
11227 | { | |
11228 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11229 | ||
11230 | delete dwo_file; | |
11231 | }; | |
11232 | ||
bc68fb19 TT |
11233 | return htab_up (htab_create_alloc (41, |
11234 | hash_dwo_file, | |
11235 | eq_dwo_file, | |
11236 | delete_dwo_file, | |
11237 | xcalloc, xfree)); | |
3019eac3 DE |
11238 | } |
11239 | ||
80626a55 DE |
11240 | /* Lookup DWO file DWO_NAME. */ |
11241 | ||
11242 | static void ** | |
ed2dc618 SM |
11243 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11244 | const char *dwo_name, | |
11245 | const char *comp_dir) | |
80626a55 DE |
11246 | { |
11247 | struct dwo_file find_entry; | |
11248 | void **slot; | |
11249 | ||
5989a64e SM |
11250 | if (dwarf2_per_objfile->per_bfd->dwo_files == NULL) |
11251 | dwarf2_per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11252 | |
0ac5b59e DE |
11253 | find_entry.dwo_name = dwo_name; |
11254 | find_entry.comp_dir = comp_dir; | |
5989a64e | 11255 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11256 | INSERT); |
80626a55 DE |
11257 | |
11258 | return slot; | |
11259 | } | |
11260 | ||
3019eac3 DE |
11261 | static hashval_t |
11262 | hash_dwo_unit (const void *item) | |
11263 | { | |
9a3c8263 | 11264 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11265 | |
11266 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11267 | return dwo_unit->signature; | |
11268 | } | |
11269 | ||
11270 | static int | |
11271 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11272 | { | |
9a3c8263 SM |
11273 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11274 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11275 | |
11276 | /* The signature is assumed to be unique within the DWO file. | |
11277 | So while object file CU dwo_id's always have the value zero, | |
11278 | that's OK, assuming each object file DWO file has only one CU, | |
11279 | and that's the rule for now. */ | |
11280 | return lhs->signature == rhs->signature; | |
11281 | } | |
11282 | ||
11283 | /* Allocate a hash table for DWO CUs,TUs. | |
11284 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11285 | ||
b0b6a987 | 11286 | static htab_up |
298e9637 | 11287 | allocate_dwo_unit_table () |
3019eac3 DE |
11288 | { |
11289 | /* Start out with a pretty small number. | |
11290 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11291 | return htab_up (htab_create_alloc (3, |
11292 | hash_dwo_unit, | |
11293 | eq_dwo_unit, | |
11294 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11295 | } |
11296 | ||
19c3d4c9 | 11297 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11298 | |
11299 | static void | |
19c3d4c9 DE |
11300 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11301 | const gdb_byte *info_ptr, | |
11302 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11303 | struct dwo_file *dwo_file, |
11304 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11305 | { |
11306 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11307 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11308 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11309 | |
a084a2a6 AT |
11310 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11311 | if (!signature.has_value ()) | |
3019eac3 | 11312 | { |
b98664d3 | 11313 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11314 | " its dwo_id [in module %s]"), |
9d8780f0 | 11315 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11316 | return; |
11317 | } | |
11318 | ||
3019eac3 | 11319 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11320 | dwo_unit->signature = *signature; |
8a0459fd | 11321 | dwo_unit->section = section; |
9c541725 | 11322 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11323 | dwo_unit->length = cu->per_cu->length; |
11324 | ||
b4f54984 | 11325 | if (dwarf_read_debug) |
9d8780f0 SM |
11326 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11327 | sect_offset_str (sect_off), | |
9c541725 | 11328 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11329 | } |
11330 | ||
33c5cd75 | 11331 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11332 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11333 | |
33c5cd75 | 11334 | static void |
ed2dc618 | 11335 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11336 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11337 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11338 | { |
11339 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
1859c670 | 11340 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
d521ce57 | 11341 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11342 | |
96b79293 | 11343 | section.read (objfile); |
33c5cd75 | 11344 | info_ptr = section.buffer; |
3019eac3 DE |
11345 | |
11346 | if (info_ptr == NULL) | |
33c5cd75 | 11347 | return; |
3019eac3 | 11348 | |
b4f54984 | 11349 | if (dwarf_read_debug) |
19c3d4c9 DE |
11350 | { |
11351 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11352 | section.get_name (), |
11353 | section.get_file_name ()); | |
19c3d4c9 | 11354 | } |
3019eac3 | 11355 | |
33c5cd75 | 11356 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11357 | while (info_ptr < end_ptr) |
11358 | { | |
11359 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11360 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11361 | struct dwo_unit *dwo_unit; |
11362 | void **slot; | |
11363 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11364 | |
11365 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11366 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11367 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11368 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11369 | per_cu.section = §ion; | |
11370 | ||
ab432490 | 11371 | cutu_reader reader (&per_cu, dwarf2_per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11372 | if (!reader.dummy_p) |
11373 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11374 | &dwo_file, &read_unit); |
33c5cd75 DB |
11375 | info_ptr += per_cu.length; |
11376 | ||
11377 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11378 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11379 | continue; |
3019eac3 | 11380 | |
33c5cd75 | 11381 | if (cus_htab == NULL) |
298e9637 | 11382 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11383 | |
1859c670 | 11384 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11385 | struct dwo_unit); |
c0ab21c2 | 11386 | *dwo_unit = read_unit; |
b0b6a987 | 11387 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11388 | gdb_assert (slot != NULL); |
11389 | if (*slot != NULL) | |
19c3d4c9 | 11390 | { |
33c5cd75 DB |
11391 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11392 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11393 | |
b98664d3 | 11394 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11395 | " the entry at offset %s, signature %s"), |
11396 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11397 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11398 | } |
33c5cd75 | 11399 | *slot = (void *)dwo_unit; |
3019eac3 | 11400 | } |
3019eac3 DE |
11401 | } |
11402 | ||
80626a55 DE |
11403 | /* DWP file .debug_{cu,tu}_index section format: |
11404 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11405 | ||
d2415c6c DE |
11406 | DWP Version 1: |
11407 | ||
80626a55 DE |
11408 | Both index sections have the same format, and serve to map a 64-bit |
11409 | signature to a set of section numbers. Each section begins with a header, | |
11410 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11411 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11412 | aligned at 8-byte boundaries in the file. | |
11413 | ||
d2415c6c DE |
11414 | The index section header consists of: |
11415 | ||
11416 | V, 32 bit version number | |
11417 | -, 32 bits unused | |
11418 | N, 32 bit number of compilation units or type units in the index | |
11419 | M, 32 bit number of slots in the hash table | |
80626a55 | 11420 | |
d2415c6c | 11421 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11422 | |
d2415c6c DE |
11423 | The hash table begins at offset 16 in the section, and consists of an array |
11424 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11425 | order of the application binary). Unused slots in the hash table are 0. | |
11426 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11427 | |
d2415c6c DE |
11428 | The parallel table begins immediately after the hash table |
11429 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11430 | array of 32-bit indexes (using the byte order of the application binary), | |
11431 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11432 | table contains a 32-bit index into the pool of section numbers. For unused | |
11433 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11434 | |
73869dc2 DE |
11435 | The pool of section numbers begins immediately following the hash table |
11436 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11437 | section numbers consists of an array of 32-bit words (using the byte order | |
11438 | of the application binary). Each item in the array is indexed starting | |
11439 | from 0. The hash table entry provides the index of the first section | |
11440 | number in the set. Additional section numbers in the set follow, and the | |
11441 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11442 | ||
11443 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11444 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11445 | be the second entry. Other members of the set may follow in any order. | |
11446 | ||
11447 | --- | |
11448 | ||
11449 | DWP Version 2: | |
11450 | ||
11451 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11452 | and the entries in the index tables are now offsets into these sections. | |
11453 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11454 | section. | |
11455 | ||
11456 | Index Section Contents: | |
11457 | Header | |
11458 | Hash Table of Signatures dwp_hash_table.hash_table | |
11459 | Parallel Table of Indices dwp_hash_table.unit_table | |
11460 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11461 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11462 | ||
11463 | The index section header consists of: | |
11464 | ||
11465 | V, 32 bit version number | |
11466 | L, 32 bit number of columns in the table of section offsets | |
11467 | N, 32 bit number of compilation units or type units in the index | |
11468 | M, 32 bit number of slots in the hash table | |
11469 | ||
11470 | Numbers are recorded using the byte order of the application binary. | |
11471 | ||
11472 | The hash table has the same format as version 1. | |
11473 | The parallel table of indices has the same format as version 1, | |
11474 | except that the entries are origin-1 indices into the table of sections | |
11475 | offsets and the table of section sizes. | |
11476 | ||
11477 | The table of offsets begins immediately following the parallel table | |
11478 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11479 | a two-dimensional array of 32-bit words (using the byte order of the | |
11480 | application binary), with L columns and N+1 rows, in row-major order. | |
11481 | Each row in the array is indexed starting from 0. The first row provides | |
11482 | a key to the remaining rows: each column in this row provides an identifier | |
11483 | for a debug section, and the offsets in the same column of subsequent rows | |
11484 | refer to that section. The section identifiers are: | |
11485 | ||
11486 | DW_SECT_INFO 1 .debug_info.dwo | |
11487 | DW_SECT_TYPES 2 .debug_types.dwo | |
11488 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11489 | DW_SECT_LINE 4 .debug_line.dwo | |
11490 | DW_SECT_LOC 5 .debug_loc.dwo | |
11491 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11492 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11493 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11494 | ||
11495 | The offsets provided by the CU and TU index sections are the base offsets | |
11496 | for the contributions made by each CU or TU to the corresponding section | |
11497 | in the package file. Each CU and TU header contains an abbrev_offset | |
11498 | field, used to find the abbreviations table for that CU or TU within the | |
11499 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11500 | be interpreted as relative to the base offset given in the index section. | |
11501 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11502 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11503 | and offsets into other debug sections obtained from DWARF attributes should | |
11504 | also be interpreted as relative to the corresponding base offset. | |
11505 | ||
11506 | The table of sizes begins immediately following the table of offsets. | |
11507 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11508 | with L columns and N rows, in row-major order. Each row in the array is | |
11509 | indexed starting from 1 (row 0 is shared by the two tables). | |
11510 | ||
11511 | --- | |
11512 | ||
11513 | Hash table lookup is handled the same in version 1 and 2: | |
11514 | ||
11515 | We assume that N and M will not exceed 2^32 - 1. | |
11516 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11517 | ||
d2415c6c DE |
11518 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11519 | in the hash table is located as follows: | |
80626a55 | 11520 | |
d2415c6c DE |
11521 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11522 | the low-order k bits all set to 1. | |
80626a55 | 11523 | |
d2415c6c | 11524 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11525 | |
d2415c6c DE |
11526 | 3) If the hash table entry at index H matches the signature, use that |
11527 | entry. If the hash table entry at index H is unused (all zeroes), | |
11528 | terminate the search: the signature is not present in the table. | |
80626a55 | 11529 | |
d2415c6c | 11530 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11531 | |
d2415c6c | 11532 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11533 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11534 | |
11535 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11536 | .debug_{info,types}.dwo in DWP_FILE. | |
11537 | Returns NULL if there isn't one. | |
11538 | Note: This function processes DWP files only, not DWO files. */ | |
11539 | ||
11540 | static struct dwp_hash_table * | |
ed2dc618 SM |
11541 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11542 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11543 | { |
11544 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11545 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11546 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11547 | struct dwarf2_section_info *index; |
73869dc2 | 11548 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11549 | struct dwp_hash_table *htab; |
11550 | ||
11551 | if (is_debug_types) | |
11552 | index = &dwp_file->sections.tu_index; | |
11553 | else | |
11554 | index = &dwp_file->sections.cu_index; | |
11555 | ||
96b79293 | 11556 | if (index->empty ()) |
80626a55 | 11557 | return NULL; |
96b79293 | 11558 | index->read (objfile); |
80626a55 DE |
11559 | |
11560 | index_ptr = index->buffer; | |
11561 | index_end = index_ptr + index->size; | |
11562 | ||
11563 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11564 | index_ptr += 4; |
11565 | if (version == 2) | |
11566 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11567 | else | |
11568 | nr_columns = 0; | |
11569 | index_ptr += 4; | |
80626a55 DE |
11570 | nr_units = read_4_bytes (dbfd, index_ptr); |
11571 | index_ptr += 4; | |
11572 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11573 | index_ptr += 4; | |
11574 | ||
73869dc2 | 11575 | if (version != 1 && version != 2) |
80626a55 | 11576 | { |
21aa081e | 11577 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11578 | " [in module %s]"), |
21aa081e | 11579 | pulongest (version), dwp_file->name); |
80626a55 DE |
11580 | } |
11581 | if (nr_slots != (nr_slots & -nr_slots)) | |
11582 | { | |
21aa081e | 11583 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11584 | " is not power of 2 [in module %s]"), |
21aa081e | 11585 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11586 | } |
11587 | ||
5989a64e | 11588 | htab = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11589 | htab->version = version; |
11590 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11591 | htab->nr_units = nr_units; |
11592 | htab->nr_slots = nr_slots; | |
11593 | htab->hash_table = index_ptr; | |
11594 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11595 | |
11596 | /* Exit early if the table is empty. */ | |
11597 | if (nr_slots == 0 || nr_units == 0 | |
11598 | || (version == 2 && nr_columns == 0)) | |
11599 | { | |
11600 | /* All must be zero. */ | |
11601 | if (nr_slots != 0 || nr_units != 0 | |
11602 | || (version == 2 && nr_columns != 0)) | |
11603 | { | |
b98664d3 | 11604 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11605 | " all zero [in modules %s]"), |
11606 | dwp_file->name); | |
11607 | } | |
11608 | return htab; | |
11609 | } | |
11610 | ||
11611 | if (version == 1) | |
11612 | { | |
11613 | htab->section_pool.v1.indices = | |
11614 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11615 | /* It's harder to decide whether the section is too small in v1. | |
11616 | V1 is deprecated anyway so we punt. */ | |
11617 | } | |
11618 | else | |
11619 | { | |
11620 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11621 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11622 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11623 | /* Reverse map for error checking. */ |
11624 | int ids_seen[DW_SECT_MAX + 1]; | |
11625 | int i; | |
11626 | ||
11627 | if (nr_columns < 2) | |
11628 | { | |
11629 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11630 | " in section table [in module %s]"), | |
11631 | dwp_file->name); | |
11632 | } | |
11633 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11634 | { | |
11635 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11636 | " in section table [in module %s]"), | |
11637 | dwp_file->name); | |
11638 | } | |
04fd5eed GB |
11639 | memset (ids, 255, sizeof_ids); |
11640 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11641 | for (i = 0; i < nr_columns; ++i) |
11642 | { | |
11643 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11644 | ||
11645 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11646 | { | |
11647 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11648 | " in section table [in module %s]"), | |
11649 | id, dwp_file->name); | |
11650 | } | |
11651 | if (ids_seen[id] != -1) | |
11652 | { | |
11653 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11654 | " id %d in section table [in module %s]"), | |
11655 | id, dwp_file->name); | |
11656 | } | |
11657 | ids_seen[id] = i; | |
11658 | ids[i] = id; | |
11659 | } | |
11660 | /* Must have exactly one info or types section. */ | |
11661 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11662 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11663 | != 1) | |
11664 | { | |
11665 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11666 | " DWO info/types section [in module %s]"), | |
11667 | dwp_file->name); | |
11668 | } | |
11669 | /* Must have an abbrev section. */ | |
11670 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11671 | { | |
11672 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11673 | " section [in module %s]"), | |
11674 | dwp_file->name); | |
11675 | } | |
11676 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11677 | htab->section_pool.v2.sizes = | |
11678 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11679 | * nr_units * nr_columns); | |
11680 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11681 | * nr_units * nr_columns)) | |
11682 | > index_end) | |
11683 | { | |
11684 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11685 | " [in module %s]"), | |
11686 | dwp_file->name); | |
11687 | } | |
11688 | } | |
80626a55 DE |
11689 | |
11690 | return htab; | |
11691 | } | |
11692 | ||
11693 | /* Update SECTIONS with the data from SECTP. | |
11694 | ||
11695 | This function is like the other "locate" section routines that are | |
11696 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11697 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11698 | |
11699 | The result is non-zero for success, or zero if an error was found. */ | |
11700 | ||
11701 | static int | |
73869dc2 DE |
11702 | locate_v1_virtual_dwo_sections (asection *sectp, |
11703 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11704 | { |
11705 | const struct dwop_section_names *names = &dwop_section_names; | |
11706 | ||
11707 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11708 | { | |
11709 | /* There can be only one. */ | |
049412e3 | 11710 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11711 | return 0; |
049412e3 | 11712 | sections->abbrev.s.section = sectp; |
fd361982 | 11713 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11714 | } |
11715 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11716 | || section_is_p (sectp->name, &names->types_dwo)) | |
11717 | { | |
11718 | /* There can be only one. */ | |
049412e3 | 11719 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11720 | return 0; |
049412e3 | 11721 | sections->info_or_types.s.section = sectp; |
fd361982 | 11722 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11723 | } |
11724 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11725 | { | |
11726 | /* There can be only one. */ | |
049412e3 | 11727 | if (sections->line.s.section != NULL) |
80626a55 | 11728 | return 0; |
049412e3 | 11729 | sections->line.s.section = sectp; |
fd361982 | 11730 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11731 | } |
11732 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11733 | { | |
11734 | /* There can be only one. */ | |
049412e3 | 11735 | if (sections->loc.s.section != NULL) |
80626a55 | 11736 | return 0; |
049412e3 | 11737 | sections->loc.s.section = sectp; |
fd361982 | 11738 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11739 | } |
11740 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11741 | { | |
11742 | /* There can be only one. */ | |
049412e3 | 11743 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11744 | return 0; |
049412e3 | 11745 | sections->macinfo.s.section = sectp; |
fd361982 | 11746 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11747 | } |
11748 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11749 | { | |
11750 | /* There can be only one. */ | |
049412e3 | 11751 | if (sections->macro.s.section != NULL) |
80626a55 | 11752 | return 0; |
049412e3 | 11753 | sections->macro.s.section = sectp; |
fd361982 | 11754 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11755 | } |
11756 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11757 | { | |
11758 | /* There can be only one. */ | |
049412e3 | 11759 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11760 | return 0; |
049412e3 | 11761 | sections->str_offsets.s.section = sectp; |
fd361982 | 11762 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11763 | } |
11764 | else | |
11765 | { | |
11766 | /* No other kind of section is valid. */ | |
11767 | return 0; | |
11768 | } | |
11769 | ||
11770 | return 1; | |
11771 | } | |
11772 | ||
73869dc2 DE |
11773 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11774 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11775 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11776 | This is for DWP version 1 files. */ | |
80626a55 DE |
11777 | |
11778 | static struct dwo_unit * | |
ed2dc618 SM |
11779 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11780 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11781 | uint32_t unit_index, |
11782 | const char *comp_dir, | |
11783 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11784 | { |
73869dc2 DE |
11785 | const struct dwp_hash_table *dwp_htab = |
11786 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11787 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11788 | const char *kind = is_debug_types ? "TU" : "CU"; |
11789 | struct dwo_file *dwo_file; | |
11790 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11791 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11792 | void **dwo_file_slot; |
80626a55 DE |
11793 | int i; |
11794 | ||
73869dc2 DE |
11795 | gdb_assert (dwp_file->version == 1); |
11796 | ||
b4f54984 | 11797 | if (dwarf_read_debug) |
80626a55 | 11798 | { |
73869dc2 | 11799 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11800 | kind, |
73869dc2 | 11801 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11802 | dwp_file->name); |
11803 | } | |
11804 | ||
19ac8c2e | 11805 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11806 | Put a limit on the number of sections we look for so that bad data |
11807 | doesn't cause us to loop forever. */ | |
11808 | ||
73869dc2 | 11809 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11810 | (1 /* .debug_info or .debug_types */ \ |
11811 | + 1 /* .debug_abbrev */ \ | |
11812 | + 1 /* .debug_line */ \ | |
11813 | + 1 /* .debug_loc */ \ | |
11814 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11815 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11816 | + 1 /* trailing zero */) |
11817 | ||
11818 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11819 | |
73869dc2 | 11820 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11821 | { |
11822 | asection *sectp; | |
11823 | uint32_t section_nr = | |
11824 | read_4_bytes (dbfd, | |
73869dc2 DE |
11825 | dwp_htab->section_pool.v1.indices |
11826 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11827 | |
11828 | if (section_nr == 0) | |
11829 | break; | |
11830 | if (section_nr >= dwp_file->num_sections) | |
11831 | { | |
11832 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11833 | " [in module %s]"), | |
11834 | dwp_file->name); | |
11835 | } | |
11836 | ||
11837 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11838 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11839 | { |
11840 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11841 | " [in module %s]"), | |
11842 | dwp_file->name); | |
11843 | } | |
11844 | } | |
11845 | ||
11846 | if (i < 2 | |
96b79293 TT |
11847 | || sections.info_or_types.empty () |
11848 | || sections.abbrev.empty ()) | |
80626a55 DE |
11849 | { |
11850 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11851 | " [in module %s]"), | |
11852 | dwp_file->name); | |
11853 | } | |
73869dc2 | 11854 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11855 | { |
11856 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11857 | " [in module %s]"), | |
11858 | dwp_file->name); | |
11859 | } | |
11860 | ||
11861 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11862 | have dwo_unit "live" in that. At least for now. | |
11863 | ||
11864 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11865 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11866 | file, we can combine them back into a virtual DWO file to save space |
11867 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11868 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11869 | ||
791afaa2 TT |
11870 | std::string virtual_dwo_name = |
11871 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11872 | sections.abbrev.get_id (), |
11873 | sections.line.get_id (), | |
11874 | sections.loc.get_id (), | |
11875 | sections.str_offsets.get_id ()); | |
80626a55 | 11876 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11877 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11878 | virtual_dwo_name.c_str (), | |
11879 | comp_dir); | |
80626a55 DE |
11880 | /* Create one if necessary. */ |
11881 | if (*dwo_file_slot == NULL) | |
11882 | { | |
b4f54984 | 11883 | if (dwarf_read_debug) |
80626a55 DE |
11884 | { |
11885 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11886 | virtual_dwo_name.c_str ()); |
80626a55 | 11887 | } |
51ac9db5 | 11888 | dwo_file = new struct dwo_file; |
45940949 | 11889 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11890 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11891 | dwo_file->sections.abbrev = sections.abbrev; |
11892 | dwo_file->sections.line = sections.line; | |
11893 | dwo_file->sections.loc = sections.loc; | |
11894 | dwo_file->sections.macinfo = sections.macinfo; | |
11895 | dwo_file->sections.macro = sections.macro; | |
11896 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11897 | /* The "str" section is global to the entire DWP file. */ | |
11898 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11899 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11900 | there's no need to record it in dwo_file. |
11901 | Also, we can't simply record type sections in dwo_file because | |
11902 | we record a pointer into the vector in dwo_unit. As we collect more | |
11903 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11904 | for it, invalidating all copies of pointers into the previous |
11905 | contents. */ | |
80626a55 DE |
11906 | *dwo_file_slot = dwo_file; |
11907 | } | |
11908 | else | |
11909 | { | |
b4f54984 | 11910 | if (dwarf_read_debug) |
80626a55 DE |
11911 | { |
11912 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11913 | virtual_dwo_name.c_str ()); |
80626a55 | 11914 | } |
9a3c8263 | 11915 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11916 | } |
80626a55 | 11917 | |
5989a64e | 11918 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11919 | dwo_unit->dwo_file = dwo_file; |
11920 | dwo_unit->signature = signature; | |
8d749320 | 11921 | dwo_unit->section = |
5989a64e | 11922 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11923 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11924 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11925 | |
11926 | return dwo_unit; | |
11927 | } | |
11928 | ||
73869dc2 DE |
11929 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11930 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11931 | piece within that section used by a TU/CU, return a virtual section | |
11932 | of just that piece. */ | |
11933 | ||
11934 | static struct dwarf2_section_info | |
ed2dc618 SM |
11935 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11936 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11937 | bfd_size_type offset, bfd_size_type size) |
11938 | { | |
11939 | struct dwarf2_section_info result; | |
11940 | asection *sectp; | |
11941 | ||
11942 | gdb_assert (section != NULL); | |
11943 | gdb_assert (!section->is_virtual); | |
11944 | ||
11945 | memset (&result, 0, sizeof (result)); | |
11946 | result.s.containing_section = section; | |
dc4ccb6f | 11947 | result.is_virtual = true; |
73869dc2 DE |
11948 | |
11949 | if (size == 0) | |
11950 | return result; | |
11951 | ||
96b79293 | 11952 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11953 | |
11954 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11955 | bounds of the real section. This is a pretty-rare event, so just | |
11956 | flag an error (easier) instead of a warning and trying to cope. */ | |
11957 | if (sectp == NULL | |
fd361982 | 11958 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11959 | { |
73869dc2 DE |
11960 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11961 | " in section %s [in module %s]"), | |
fd361982 | 11962 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11963 | objfile_name (dwarf2_per_objfile->objfile)); |
11964 | } | |
11965 | ||
11966 | result.virtual_offset = offset; | |
11967 | result.size = size; | |
11968 | return result; | |
11969 | } | |
11970 | ||
11971 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11972 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11973 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11974 | This is for DWP version 2 files. */ | |
11975 | ||
11976 | static struct dwo_unit * | |
ed2dc618 SM |
11977 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11978 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11979 | uint32_t unit_index, |
11980 | const char *comp_dir, | |
11981 | ULONGEST signature, int is_debug_types) | |
11982 | { | |
73869dc2 DE |
11983 | const struct dwp_hash_table *dwp_htab = |
11984 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11985 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11986 | const char *kind = is_debug_types ? "TU" : "CU"; |
11987 | struct dwo_file *dwo_file; | |
11988 | struct dwo_unit *dwo_unit; | |
11989 | struct virtual_v2_dwo_sections sections; | |
11990 | void **dwo_file_slot; | |
73869dc2 DE |
11991 | int i; |
11992 | ||
11993 | gdb_assert (dwp_file->version == 2); | |
11994 | ||
b4f54984 | 11995 | if (dwarf_read_debug) |
73869dc2 DE |
11996 | { |
11997 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11998 | kind, | |
11999 | pulongest (unit_index), hex_string (signature), | |
12000 | dwp_file->name); | |
12001 | } | |
12002 | ||
12003 | /* Fetch the section offsets of this DWO unit. */ | |
12004 | ||
12005 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12006 | |
12007 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12008 | { | |
12009 | uint32_t offset = read_4_bytes (dbfd, | |
12010 | dwp_htab->section_pool.v2.offsets | |
12011 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12012 | + i) | |
12013 | * sizeof (uint32_t))); | |
12014 | uint32_t size = read_4_bytes (dbfd, | |
12015 | dwp_htab->section_pool.v2.sizes | |
12016 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12017 | + i) | |
12018 | * sizeof (uint32_t))); | |
12019 | ||
12020 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12021 | { | |
12022 | case DW_SECT_INFO: | |
12023 | case DW_SECT_TYPES: | |
12024 | sections.info_or_types_offset = offset; | |
12025 | sections.info_or_types_size = size; | |
12026 | break; | |
12027 | case DW_SECT_ABBREV: | |
12028 | sections.abbrev_offset = offset; | |
12029 | sections.abbrev_size = size; | |
12030 | break; | |
12031 | case DW_SECT_LINE: | |
12032 | sections.line_offset = offset; | |
12033 | sections.line_size = size; | |
12034 | break; | |
12035 | case DW_SECT_LOC: | |
12036 | sections.loc_offset = offset; | |
12037 | sections.loc_size = size; | |
12038 | break; | |
12039 | case DW_SECT_STR_OFFSETS: | |
12040 | sections.str_offsets_offset = offset; | |
12041 | sections.str_offsets_size = size; | |
12042 | break; | |
12043 | case DW_SECT_MACINFO: | |
12044 | sections.macinfo_offset = offset; | |
12045 | sections.macinfo_size = size; | |
12046 | break; | |
12047 | case DW_SECT_MACRO: | |
12048 | sections.macro_offset = offset; | |
12049 | sections.macro_size = size; | |
12050 | break; | |
12051 | } | |
12052 | } | |
12053 | ||
12054 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12055 | have dwo_unit "live" in that. At least for now. | |
12056 | ||
12057 | The DWP file can be made up of a random collection of CUs and TUs. | |
12058 | However, for each CU + set of TUs that came from the same original DWO | |
12059 | file, we can combine them back into a virtual DWO file to save space | |
12060 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12061 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12062 | ||
791afaa2 TT |
12063 | std::string virtual_dwo_name = |
12064 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12065 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12066 | (long) (sections.line_size ? sections.line_offset : 0), | |
12067 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12068 | (long) (sections.str_offsets_size | |
12069 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12070 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12071 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12072 | virtual_dwo_name.c_str (), | |
12073 | comp_dir); | |
73869dc2 DE |
12074 | /* Create one if necessary. */ |
12075 | if (*dwo_file_slot == NULL) | |
12076 | { | |
b4f54984 | 12077 | if (dwarf_read_debug) |
73869dc2 DE |
12078 | { |
12079 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12080 | virtual_dwo_name.c_str ()); |
73869dc2 | 12081 | } |
51ac9db5 | 12082 | dwo_file = new struct dwo_file; |
45940949 | 12083 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12084 | dwo_file->comp_dir = comp_dir; |
12085 | dwo_file->sections.abbrev = | |
ed2dc618 | 12086 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12087 | sections.abbrev_offset, sections.abbrev_size); |
12088 | dwo_file->sections.line = | |
ed2dc618 | 12089 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12090 | sections.line_offset, sections.line_size); |
12091 | dwo_file->sections.loc = | |
ed2dc618 | 12092 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12093 | sections.loc_offset, sections.loc_size); |
12094 | dwo_file->sections.macinfo = | |
ed2dc618 | 12095 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12096 | sections.macinfo_offset, sections.macinfo_size); |
12097 | dwo_file->sections.macro = | |
ed2dc618 | 12098 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12099 | sections.macro_offset, sections.macro_size); |
12100 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12101 | create_dwp_v2_section (dwarf2_per_objfile, |
12102 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12103 | sections.str_offsets_offset, |
12104 | sections.str_offsets_size); | |
12105 | /* The "str" section is global to the entire DWP file. */ | |
12106 | dwo_file->sections.str = dwp_file->sections.str; | |
12107 | /* The info or types section is assigned below to dwo_unit, | |
12108 | there's no need to record it in dwo_file. | |
12109 | Also, we can't simply record type sections in dwo_file because | |
12110 | we record a pointer into the vector in dwo_unit. As we collect more | |
12111 | types we'll grow the vector and eventually have to reallocate space | |
12112 | for it, invalidating all copies of pointers into the previous | |
12113 | contents. */ | |
12114 | *dwo_file_slot = dwo_file; | |
12115 | } | |
12116 | else | |
12117 | { | |
b4f54984 | 12118 | if (dwarf_read_debug) |
73869dc2 DE |
12119 | { |
12120 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12121 | virtual_dwo_name.c_str ()); |
73869dc2 | 12122 | } |
9a3c8263 | 12123 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12124 | } |
73869dc2 | 12125 | |
5989a64e | 12126 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12127 | dwo_unit->dwo_file = dwo_file; |
12128 | dwo_unit->signature = signature; | |
8d749320 | 12129 | dwo_unit->section = |
5989a64e | 12130 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
ed2dc618 SM |
12131 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12132 | is_debug_types | |
73869dc2 DE |
12133 | ? &dwp_file->sections.types |
12134 | : &dwp_file->sections.info, | |
12135 | sections.info_or_types_offset, | |
12136 | sections.info_or_types_size); | |
12137 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12138 | ||
12139 | return dwo_unit; | |
12140 | } | |
12141 | ||
57d63ce2 DE |
12142 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12143 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12144 | |
12145 | static struct dwo_unit * | |
ed2dc618 SM |
12146 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12147 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12148 | ULONGEST signature, int is_debug_types) |
80626a55 | 12149 | { |
57d63ce2 DE |
12150 | const struct dwp_hash_table *dwp_htab = |
12151 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12152 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12153 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12154 | uint32_t hash = signature & mask; |
12155 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12156 | unsigned int i; | |
12157 | void **slot; | |
870f88f7 | 12158 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12159 | |
12160 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12161 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12162 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12163 | ? dwp_file->loaded_tus.get () |
12164 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12165 | &find_dwo_cu, INSERT); |
80626a55 DE |
12166 | |
12167 | if (*slot != NULL) | |
9a3c8263 | 12168 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12169 | |
12170 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12171 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12172 | { |
12173 | ULONGEST signature_in_table; | |
12174 | ||
12175 | signature_in_table = | |
57d63ce2 | 12176 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12177 | if (signature_in_table == signature) |
12178 | { | |
57d63ce2 DE |
12179 | uint32_t unit_index = |
12180 | read_4_bytes (dbfd, | |
12181 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12182 | |
73869dc2 DE |
12183 | if (dwp_file->version == 1) |
12184 | { | |
ed2dc618 SM |
12185 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12186 | dwp_file, unit_index, | |
73869dc2 DE |
12187 | comp_dir, signature, |
12188 | is_debug_types); | |
12189 | } | |
12190 | else | |
12191 | { | |
ed2dc618 SM |
12192 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12193 | dwp_file, unit_index, | |
73869dc2 DE |
12194 | comp_dir, signature, |
12195 | is_debug_types); | |
12196 | } | |
9a3c8263 | 12197 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12198 | } |
12199 | if (signature_in_table == 0) | |
12200 | return NULL; | |
12201 | hash = (hash + hash2) & mask; | |
12202 | } | |
12203 | ||
12204 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12205 | " [in module %s]"), | |
12206 | dwp_file->name); | |
12207 | } | |
12208 | ||
ab5088bf | 12209 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12210 | Open the file specified by FILE_NAME and hand it off to BFD for |
12211 | preliminary analysis. Return a newly initialized bfd *, which | |
12212 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12213 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12214 | SEARCH_CWD is true if the current directory is to be searched. |
12215 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12216 | If successful, the file is added to the bfd include table of the |
12217 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12218 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12219 | NOTE: This function is derived from symfile_bfd_open. */ |
12220 | ||
192b62ce | 12221 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12222 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12223 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12224 | { |
24b9144d | 12225 | int desc; |
9c02c129 DE |
12226 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12227 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12228 | to debug_file_directory. */ | |
e0cc99a6 | 12229 | const char *search_path; |
9c02c129 DE |
12230 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12231 | ||
e0cc99a6 | 12232 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12233 | if (search_cwd) |
12234 | { | |
12235 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12236 | { |
12237 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12238 | debug_file_directory, | |
12239 | (char *) NULL)); | |
12240 | search_path = search_path_holder.get (); | |
12241 | } | |
6ac97d4c | 12242 | else |
e0cc99a6 | 12243 | search_path = "."; |
6ac97d4c | 12244 | } |
9c02c129 | 12245 | else |
e0cc99a6 | 12246 | search_path = debug_file_directory; |
3019eac3 | 12247 | |
24b9144d | 12248 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12249 | if (is_dwp) |
12250 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12251 | |
12252 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12253 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12254 | O_RDONLY | O_BINARY, &absolute_name); |
12255 | if (desc < 0) | |
12256 | return NULL; | |
12257 | ||
e0cc99a6 TT |
12258 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12259 | gnutarget, desc)); | |
9c02c129 DE |
12260 | if (sym_bfd == NULL) |
12261 | return NULL; | |
192b62ce | 12262 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12263 | |
192b62ce TT |
12264 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12265 | return NULL; | |
3019eac3 | 12266 | |
13aaf454 DE |
12267 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12268 | This is important because things like demangled_names_hash lives in the | |
12269 | objfile's per_bfd space and may have references to things like symbol | |
12270 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12271 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12272 | |
3019eac3 DE |
12273 | return sym_bfd; |
12274 | } | |
12275 | ||
ab5088bf | 12276 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12277 | COMP_DIR is the DW_AT_comp_dir attribute. |
12278 | The result is the bfd handle of the file. | |
12279 | If there is a problem finding or opening the file, return NULL. | |
12280 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12281 | same as symfile_bfd_open. */ | |
12282 | ||
192b62ce | 12283 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12284 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12285 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12286 | { |
80626a55 | 12287 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12288 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12289 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12290 | |
12291 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12292 | ||
12293 | if (comp_dir != NULL) | |
12294 | { | |
43816ebc TT |
12295 | gdb::unique_xmalloc_ptr<char> path_to_try |
12296 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12297 | |
12298 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12299 | search path, which seems useful. */ | |
ed2dc618 | 12300 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12301 | path_to_try.get (), |
ed2dc618 | 12302 | 0 /*is_dwp*/, |
192b62ce | 12303 | 1 /*search_cwd*/)); |
3019eac3 DE |
12304 | if (abfd != NULL) |
12305 | return abfd; | |
12306 | } | |
12307 | ||
12308 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12309 | is a list of paths. */ | |
12310 | ||
12311 | if (*debug_file_directory == '\0') | |
12312 | return NULL; | |
12313 | ||
ed2dc618 SM |
12314 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12315 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12316 | } |
12317 | ||
80626a55 DE |
12318 | /* This function is mapped across the sections and remembers the offset and |
12319 | size of each of the DWO debugging sections we are interested in. */ | |
12320 | ||
12321 | static void | |
12322 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12323 | { | |
9a3c8263 | 12324 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12325 | const struct dwop_section_names *names = &dwop_section_names; |
12326 | ||
12327 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12328 | { | |
049412e3 | 12329 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12330 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12331 | } |
12332 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12333 | { | |
049412e3 | 12334 | dwo_sections->info.s.section = sectp; |
fd361982 | 12335 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12336 | } |
12337 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12338 | { | |
049412e3 | 12339 | dwo_sections->line.s.section = sectp; |
fd361982 | 12340 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12341 | } |
12342 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12343 | { | |
049412e3 | 12344 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12345 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12346 | } |
41144253 | 12347 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12348 | { | |
12349 | dwo_sections->loclists.s.section = sectp; | |
12350 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12351 | } | |
80626a55 DE |
12352 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12353 | { | |
049412e3 | 12354 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12355 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12356 | } |
12357 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12358 | { | |
049412e3 | 12359 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12360 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12361 | } |
12362 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12363 | { | |
049412e3 | 12364 | dwo_sections->str.s.section = sectp; |
fd361982 | 12365 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12366 | } |
12367 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12368 | { | |
049412e3 | 12369 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12370 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12371 | } |
12372 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12373 | { | |
12374 | struct dwarf2_section_info type_section; | |
12375 | ||
12376 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12377 | type_section.s.section = sectp; |
fd361982 | 12378 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12379 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12380 | } |
12381 | } | |
12382 | ||
ab5088bf | 12383 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12384 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12385 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12386 | |
12387 | static struct dwo_file * | |
4ab09049 SM |
12388 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12389 | const char *comp_dir) | |
3019eac3 | 12390 | { |
4ab09049 | 12391 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 12392 | |
fb1eb2f9 | 12393 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12394 | if (dbfd == NULL) |
12395 | { | |
b4f54984 | 12396 | if (dwarf_read_debug) |
80626a55 DE |
12397 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12398 | return NULL; | |
12399 | } | |
263db9a1 | 12400 | |
51ac9db5 | 12401 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12402 | dwo_file->dwo_name = dwo_name; |
12403 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12404 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12405 | |
fb1eb2f9 | 12406 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12407 | &dwo_file->sections); |
3019eac3 | 12408 | |
4ab09049 | 12409 | create_cus_hash_table (dwarf2_per_objfile, cu, *dwo_file, |
18a8505e | 12410 | dwo_file->sections.info, dwo_file->cus); |
3019eac3 | 12411 | |
263db9a1 | 12412 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12413 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12414 | |
b4f54984 | 12415 | if (dwarf_read_debug) |
80626a55 DE |
12416 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12417 | ||
263db9a1 | 12418 | return dwo_file.release (); |
3019eac3 DE |
12419 | } |
12420 | ||
80626a55 | 12421 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12422 | size of each of the DWP debugging sections common to version 1 and 2 that |
12423 | we are interested in. */ | |
3019eac3 | 12424 | |
80626a55 | 12425 | static void |
73869dc2 DE |
12426 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12427 | void *dwp_file_ptr) | |
3019eac3 | 12428 | { |
9a3c8263 | 12429 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12430 | const struct dwop_section_names *names = &dwop_section_names; |
12431 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12432 | |
80626a55 | 12433 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12434 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12435 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12436 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12437 | |
80626a55 DE |
12438 | /* Look for specific sections that we need. */ |
12439 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12440 | { | |
049412e3 | 12441 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12442 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12443 | } |
12444 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12445 | { | |
049412e3 | 12446 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12447 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12448 | } |
12449 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12450 | { | |
049412e3 | 12451 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12452 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12453 | } |
12454 | } | |
3019eac3 | 12455 | |
73869dc2 DE |
12456 | /* This function is mapped across the sections and remembers the offset and |
12457 | size of each of the DWP version 2 debugging sections that we are interested | |
12458 | in. This is split into a separate function because we don't know if we | |
12459 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12460 | ||
12461 | static void | |
12462 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12463 | { | |
9a3c8263 | 12464 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12465 | const struct dwop_section_names *names = &dwop_section_names; |
12466 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12467 | ||
12468 | /* Record the ELF section number for later lookup: this is what the | |
12469 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12470 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12471 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12472 | ||
12473 | /* Look for specific sections that we need. */ | |
12474 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12475 | { | |
049412e3 | 12476 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12477 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12478 | } |
12479 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12480 | { | |
049412e3 | 12481 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12482 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12483 | } |
12484 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12485 | { | |
049412e3 | 12486 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12487 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12488 | } |
12489 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12490 | { | |
049412e3 | 12491 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12492 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12493 | } |
12494 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12495 | { | |
049412e3 | 12496 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12497 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12498 | } |
12499 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12500 | { | |
049412e3 | 12501 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12502 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12503 | } |
12504 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12505 | { | |
049412e3 | 12506 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12507 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12508 | } |
12509 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12510 | { | |
049412e3 | 12511 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12512 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12513 | } |
12514 | } | |
12515 | ||
80626a55 | 12516 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12517 | |
80626a55 DE |
12518 | static hashval_t |
12519 | hash_dwp_loaded_cutus (const void *item) | |
12520 | { | |
9a3c8263 | 12521 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12522 | |
80626a55 DE |
12523 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12524 | return dwo_unit->signature; | |
3019eac3 DE |
12525 | } |
12526 | ||
80626a55 | 12527 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12528 | |
80626a55 DE |
12529 | static int |
12530 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12531 | { |
9a3c8263 SM |
12532 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12533 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12534 | |
80626a55 DE |
12535 | return dua->signature == dub->signature; |
12536 | } | |
3019eac3 | 12537 | |
80626a55 | 12538 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12539 | |
48b490f2 | 12540 | static htab_up |
298e9637 | 12541 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12542 | { |
48b490f2 TT |
12543 | return htab_up (htab_create_alloc (3, |
12544 | hash_dwp_loaded_cutus, | |
12545 | eq_dwp_loaded_cutus, | |
12546 | NULL, xcalloc, xfree)); | |
80626a55 | 12547 | } |
3019eac3 | 12548 | |
ab5088bf DE |
12549 | /* Try to open DWP file FILE_NAME. |
12550 | The result is the bfd handle of the file. | |
12551 | If there is a problem finding or opening the file, return NULL. | |
12552 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12553 | same as symfile_bfd_open. */ | |
12554 | ||
192b62ce | 12555 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12556 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12557 | const char *file_name) | |
ab5088bf | 12558 | { |
ed2dc618 SM |
12559 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12560 | 1 /*is_dwp*/, | |
192b62ce | 12561 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12562 | if (abfd != NULL) |
12563 | return abfd; | |
12564 | ||
12565 | /* Work around upstream bug 15652. | |
12566 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12567 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12568 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12569 | of the executable's path may have discarded the needed info. | |
12570 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12571 | .gnu_debuglink, but that doesn't exist yet.] | |
12572 | Strip the directory from FILE_NAME and search again. */ | |
12573 | if (*debug_file_directory != '\0') | |
12574 | { | |
12575 | /* Don't implicitly search the current directory here. | |
12576 | If the user wants to search "." to handle this case, | |
12577 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12578 | return try_open_dwop_file (dwarf2_per_objfile, |
12579 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12580 | 0 /*search_cwd*/); |
12581 | } | |
12582 | ||
12583 | return NULL; | |
ab5088bf DE |
12584 | } |
12585 | ||
80626a55 DE |
12586 | /* Initialize the use of the DWP file for the current objfile. |
12587 | By convention the name of the DWP file is ${objfile}.dwp. | |
12588 | The result is NULL if it can't be found. */ | |
a766d390 | 12589 | |
400174b1 | 12590 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12591 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12592 | { |
12593 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12594 | |
82bf32bc JK |
12595 | /* Try to find first .dwp for the binary file before any symbolic links |
12596 | resolving. */ | |
6c447423 DE |
12597 | |
12598 | /* If the objfile is a debug file, find the name of the real binary | |
12599 | file and get the name of dwp file from there. */ | |
d721ba37 | 12600 | std::string dwp_name; |
6c447423 DE |
12601 | if (objfile->separate_debug_objfile_backlink != NULL) |
12602 | { | |
12603 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12604 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12605 | |
d721ba37 | 12606 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12607 | } |
12608 | else | |
d721ba37 PA |
12609 | dwp_name = objfile->original_name; |
12610 | ||
12611 | dwp_name += ".dwp"; | |
80626a55 | 12612 | |
ed2dc618 | 12613 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12614 | if (dbfd == NULL |
12615 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12616 | { | |
12617 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12618 | dwp_name = objfile_name (objfile); |
12619 | dwp_name += ".dwp"; | |
ed2dc618 | 12620 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12621 | } |
12622 | ||
80626a55 DE |
12623 | if (dbfd == NULL) |
12624 | { | |
b4f54984 | 12625 | if (dwarf_read_debug) |
d721ba37 | 12626 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12627 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12628 | } |
400174b1 TT |
12629 | |
12630 | const char *name = bfd_get_filename (dbfd.get ()); | |
12631 | std::unique_ptr<struct dwp_file> dwp_file | |
12632 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12633 | |
0a0f4c01 | 12634 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12635 | dwp_file->elf_sections = |
5989a64e | 12636 | OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
80626a55 DE |
12637 | dwp_file->num_sections, asection *); |
12638 | ||
400174b1 TT |
12639 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12640 | dwarf2_locate_common_dwp_sections, | |
12641 | dwp_file.get ()); | |
80626a55 | 12642 | |
400174b1 TT |
12643 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12644 | 0); | |
80626a55 | 12645 | |
400174b1 TT |
12646 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12647 | 1); | |
80626a55 | 12648 | |
73869dc2 | 12649 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12650 | if (dwp_file->cus && dwp_file->tus |
12651 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12652 | { |
12653 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12654 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12655 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12656 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12657 | " TU version %s [in DWP file %s]"), | |
12658 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12659 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12660 | } |
08302ed2 DE |
12661 | |
12662 | if (dwp_file->cus) | |
12663 | dwp_file->version = dwp_file->cus->version; | |
12664 | else if (dwp_file->tus) | |
12665 | dwp_file->version = dwp_file->tus->version; | |
12666 | else | |
12667 | dwp_file->version = 2; | |
73869dc2 DE |
12668 | |
12669 | if (dwp_file->version == 2) | |
400174b1 TT |
12670 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12671 | dwarf2_locate_v2_dwp_sections, | |
12672 | dwp_file.get ()); | |
73869dc2 | 12673 | |
298e9637 SM |
12674 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12675 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12676 | |
b4f54984 | 12677 | if (dwarf_read_debug) |
80626a55 DE |
12678 | { |
12679 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12680 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12681 | " %s CUs, %s TUs\n", |
12682 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12683 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12684 | } |
12685 | ||
12686 | return dwp_file; | |
3019eac3 | 12687 | } |
c906108c | 12688 | |
ab5088bf DE |
12689 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12690 | ||
12691 | static struct dwp_file * | |
ed2dc618 | 12692 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf | 12693 | { |
5989a64e | 12694 | if (! dwarf2_per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12695 | { |
5989a64e | 12696 | dwarf2_per_objfile->per_bfd->dwp_file |
ed2dc618 | 12697 | = open_and_init_dwp_file (dwarf2_per_objfile); |
5989a64e | 12698 | dwarf2_per_objfile->per_bfd->dwp_checked = 1; |
ab5088bf | 12699 | } |
5989a64e | 12700 | return dwarf2_per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12701 | } |
12702 | ||
80626a55 DE |
12703 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12704 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12705 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12706 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12707 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12708 | ||
12709 | This is called, for example, when wanting to read a variable with a | |
12710 | complex location. Therefore we don't want to do file i/o for every call. | |
12711 | Therefore we don't want to look for a DWO file on every call. | |
12712 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12713 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12714 | for a DWO file. | |
12715 | ||
1c658ad5 | 12716 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12717 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12718 | |
3019eac3 | 12719 | static struct dwo_unit * |
4ab09049 | 12720 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12721 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12722 | { |
4ab09049 | 12723 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 12724 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12725 | const char *kind = is_debug_types ? "TU" : "CU"; |
12726 | void **dwo_file_slot; | |
3019eac3 | 12727 | struct dwo_file *dwo_file; |
80626a55 | 12728 | struct dwp_file *dwp_file; |
cb1df416 | 12729 | |
6a506a2d DE |
12730 | /* First see if there's a DWP file. |
12731 | If we have a DWP file but didn't find the DWO inside it, don't | |
12732 | look for the original DWO file. It makes gdb behave differently | |
12733 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12734 | |
ed2dc618 | 12735 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12736 | if (dwp_file != NULL) |
cf2c3c16 | 12737 | { |
80626a55 DE |
12738 | const struct dwp_hash_table *dwp_htab = |
12739 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12740 | ||
12741 | if (dwp_htab != NULL) | |
12742 | { | |
12743 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12744 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12745 | signature, is_debug_types); |
80626a55 DE |
12746 | |
12747 | if (dwo_cutu != NULL) | |
12748 | { | |
b4f54984 | 12749 | if (dwarf_read_debug) |
80626a55 DE |
12750 | { |
12751 | fprintf_unfiltered (gdb_stdlog, | |
12752 | "Virtual DWO %s %s found: @%s\n", | |
12753 | kind, hex_string (signature), | |
12754 | host_address_to_string (dwo_cutu)); | |
12755 | } | |
12756 | return dwo_cutu; | |
12757 | } | |
12758 | } | |
12759 | } | |
6a506a2d | 12760 | else |
80626a55 | 12761 | { |
6a506a2d | 12762 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12763 | |
ed2dc618 SM |
12764 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12765 | dwo_name, comp_dir); | |
6a506a2d | 12766 | if (*dwo_file_slot == NULL) |
80626a55 | 12767 | { |
6a506a2d | 12768 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12769 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12770 | } |
6a506a2d | 12771 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12772 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12773 | |
6a506a2d | 12774 | if (dwo_file != NULL) |
19c3d4c9 | 12775 | { |
6a506a2d DE |
12776 | struct dwo_unit *dwo_cutu = NULL; |
12777 | ||
12778 | if (is_debug_types && dwo_file->tus) | |
12779 | { | |
12780 | struct dwo_unit find_dwo_cutu; | |
12781 | ||
12782 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12783 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12784 | dwo_cutu |
b0b6a987 TT |
12785 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12786 | &find_dwo_cutu); | |
6a506a2d | 12787 | } |
33c5cd75 | 12788 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12789 | { |
33c5cd75 DB |
12790 | struct dwo_unit find_dwo_cutu; |
12791 | ||
12792 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12793 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12794 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12795 | &find_dwo_cutu); |
6a506a2d DE |
12796 | } |
12797 | ||
12798 | if (dwo_cutu != NULL) | |
12799 | { | |
b4f54984 | 12800 | if (dwarf_read_debug) |
6a506a2d DE |
12801 | { |
12802 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12803 | kind, dwo_name, hex_string (signature), | |
12804 | host_address_to_string (dwo_cutu)); | |
12805 | } | |
12806 | return dwo_cutu; | |
80626a55 DE |
12807 | } |
12808 | } | |
2e276125 | 12809 | } |
9cdd5dbd | 12810 | |
80626a55 DE |
12811 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12812 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12813 | correctly to find the file. */ | |
12814 | ||
b4f54984 | 12815 | if (dwarf_read_debug) |
80626a55 DE |
12816 | { |
12817 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12818 | kind, dwo_name, hex_string (signature)); | |
12819 | } | |
3019eac3 | 12820 | |
6656a72d DE |
12821 | /* This is a warning and not a complaint because it can be caused by |
12822 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12823 | { |
12824 | /* Print the name of the DWP file if we looked there, helps the user | |
12825 | better diagnose the problem. */ | |
791afaa2 | 12826 | std::string dwp_text; |
43942612 DE |
12827 | |
12828 | if (dwp_file != NULL) | |
791afaa2 TT |
12829 | dwp_text = string_printf (" [in DWP file %s]", |
12830 | lbasename (dwp_file->name)); | |
43942612 | 12831 | |
9d8780f0 | 12832 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12833 | " [in module %s]"), |
4ab09049 SM |
12834 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12835 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12836 | } |
3019eac3 | 12837 | return NULL; |
5fb290d7 DJ |
12838 | } |
12839 | ||
80626a55 DE |
12840 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12841 | See lookup_dwo_cutu_unit for details. */ | |
12842 | ||
12843 | static struct dwo_unit * | |
4ab09049 | 12844 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12845 | ULONGEST signature) |
12846 | { | |
4ab09049 SM |
12847 | gdb_assert (!cu->per_cu->is_debug_types); |
12848 | ||
12849 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12850 | } |
12851 | ||
12852 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12853 | See lookup_dwo_cutu_unit for details. */ | |
12854 | ||
12855 | static struct dwo_unit * | |
4ab09049 | 12856 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12857 | { |
4ab09049 SM |
12858 | gdb_assert (cu->per_cu->is_debug_types); |
12859 | ||
12860 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12861 | ||
12862 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12863 | } |
12864 | ||
89e63ee4 DE |
12865 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12866 | ||
12867 | static int | |
12868 | queue_and_load_dwo_tu (void **slot, void *info) | |
12869 | { | |
12870 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12871 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12872 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12873 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12874 | |
12875 | if (sig_type != NULL) | |
12876 | { | |
12877 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12878 | ||
12879 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12880 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12881 | while processing PER_CU. */ | |
120ce1b5 | 12882 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
12883 | load_full_type_unit (sig_cu, cu->per_objfile); |
12884 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
12885 | } |
12886 | ||
12887 | return 1; | |
12888 | } | |
12889 | ||
12890 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12891 | The DWO may have the only definition of the type, though it may not be | |
12892 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12893 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12894 | ||
12895 | static void | |
12896 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12897 | { | |
12898 | struct dwo_unit *dwo_unit; | |
12899 | struct dwo_file *dwo_file; | |
12900 | ||
12901 | gdb_assert (!per_cu->is_debug_types); | |
89e63ee4 | 12902 | gdb_assert (per_cu->cu != NULL); |
64874a40 | 12903 | gdb_assert (get_dwp_file (per_cu->cu->per_objfile) == NULL); |
89e63ee4 DE |
12904 | |
12905 | dwo_unit = per_cu->cu->dwo_unit; | |
12906 | gdb_assert (dwo_unit != NULL); | |
12907 | ||
12908 | dwo_file = dwo_unit->dwo_file; | |
12909 | if (dwo_file->tus != NULL) | |
b0b6a987 | 12910 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
d460f660 | 12911 | per_cu->cu); |
89e63ee4 DE |
12912 | } |
12913 | ||
3019eac3 | 12914 | /* Read in various DIEs. */ |
348e048f | 12915 | |
d389af10 | 12916 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12917 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12918 | already referenced by DW_AT_abstract_origin from the children of the | |
12919 | current DIE. */ | |
d389af10 JK |
12920 | |
12921 | static void | |
12922 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12923 | { | |
12924 | struct die_info *child_die; | |
791afaa2 | 12925 | sect_offset *offsetp; |
d389af10 JK |
12926 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12927 | struct die_info *origin_die; | |
12928 | /* Iterator of the ORIGIN_DIE children. */ | |
12929 | struct die_info *origin_child_die; | |
d389af10 | 12930 | struct attribute *attr; |
cd02d79d PA |
12931 | struct dwarf2_cu *origin_cu; |
12932 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12933 | |
12934 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12935 | if (!attr) | |
12936 | return; | |
12937 | ||
cd02d79d PA |
12938 | /* Note that following die references may follow to a die in a |
12939 | different cu. */ | |
12940 | ||
12941 | origin_cu = cu; | |
12942 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12943 | ||
12944 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12945 | symbols in. */ | |
12946 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12947 | origin_cu->list_in_scope = cu->list_in_scope; | |
12948 | ||
edb3359d DJ |
12949 | if (die->tag != origin_die->tag |
12950 | && !(die->tag == DW_TAG_inlined_subroutine | |
12951 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12952 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12953 | sect_offset_str (die->sect_off), |
12954 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12955 | |
791afaa2 | 12956 | std::vector<sect_offset> offsets; |
d389af10 | 12957 | |
3ea89b92 PMR |
12958 | for (child_die = die->child; |
12959 | child_die && child_die->tag; | |
436c571c | 12960 | child_die = child_die->sibling) |
3ea89b92 PMR |
12961 | { |
12962 | struct die_info *child_origin_die; | |
12963 | struct dwarf2_cu *child_origin_cu; | |
12964 | ||
12965 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12966 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12967 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12968 | present in the abstract instance but not referenced in the concrete | |
12969 | one. */ | |
216f72a1 JK |
12970 | if (child_die->tag == DW_TAG_call_site |
12971 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12972 | continue; |
12973 | ||
c38f313d DJ |
12974 | /* For each CHILD_DIE, find the corresponding child of |
12975 | ORIGIN_DIE. If there is more than one layer of | |
12976 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12977 | but GCC versions at least through 4.4 generate this (GCC PR | |
12978 | 40573). */ | |
3ea89b92 PMR |
12979 | child_origin_die = child_die; |
12980 | child_origin_cu = cu; | |
c38f313d DJ |
12981 | while (1) |
12982 | { | |
cd02d79d PA |
12983 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12984 | child_origin_cu); | |
c38f313d DJ |
12985 | if (attr == NULL) |
12986 | break; | |
cd02d79d PA |
12987 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12988 | &child_origin_cu); | |
c38f313d DJ |
12989 | } |
12990 | ||
d389af10 JK |
12991 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12992 | counterpart may exist. */ | |
c38f313d | 12993 | if (child_origin_die != child_die) |
d389af10 | 12994 | { |
edb3359d DJ |
12995 | if (child_die->tag != child_origin_die->tag |
12996 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12997 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12998 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12999 | "different tags"), |
9d8780f0 SM |
13000 | sect_offset_str (child_die->sect_off), |
13001 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13002 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13003 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13004 | "different parents"), |
9d8780f0 SM |
13005 | sect_offset_str (child_die->sect_off), |
13006 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13007 | else |
791afaa2 | 13008 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13009 | } |
d389af10 | 13010 | } |
791afaa2 TT |
13011 | std::sort (offsets.begin (), offsets.end ()); |
13012 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13013 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13014 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13015 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13016 | "to DIE %s as their abstract origin"), |
13017 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13018 | |
791afaa2 | 13019 | offsetp = offsets.data (); |
d389af10 JK |
13020 | origin_child_die = origin_die->child; |
13021 | while (origin_child_die && origin_child_die->tag) | |
13022 | { | |
13023 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13024 | while (offsetp < offsets_end |
9c541725 | 13025 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13026 | offsetp++; |
b64f50a1 | 13027 | if (offsetp >= offsets_end |
9c541725 | 13028 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13029 | { |
adde2bff DE |
13030 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13031 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13032 | This can happen with mutually referenced abstract_origins. | |
13033 | PR 16581. */ | |
13034 | if (!origin_child_die->in_process) | |
13035 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13036 | } |
436c571c | 13037 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13038 | } |
cd02d79d | 13039 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13040 | |
13041 | if (cu != origin_cu) | |
13042 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13043 | } |
13044 | ||
c906108c | 13045 | static void |
e7c27a73 | 13046 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13047 | { |
5e22e966 | 13048 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13049 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13050 | struct context_stack *newobj; |
c906108c SS |
13051 | CORE_ADDR lowpc; |
13052 | CORE_ADDR highpc; | |
13053 | struct die_info *child_die; | |
edb3359d | 13054 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13055 | const char *name; |
e142c38c | 13056 | CORE_ADDR baseaddr; |
801e3a5b | 13057 | struct block *block; |
edb3359d | 13058 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13059 | std::vector<struct symbol *> template_args; |
34eaf542 | 13060 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13061 | |
13062 | if (inlined_func) | |
13063 | { | |
13064 | /* If we do not have call site information, we can't show the | |
13065 | caller of this inlined function. That's too confusing, so | |
13066 | only use the scope for local variables. */ | |
13067 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13068 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13069 | if (call_line == NULL || call_file == NULL) | |
13070 | { | |
13071 | read_lexical_block_scope (die, cu); | |
13072 | return; | |
13073 | } | |
13074 | } | |
c906108c | 13075 | |
b3b3bada | 13076 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13077 | |
94af9270 | 13078 | name = dwarf2_name (die, cu); |
c906108c | 13079 | |
e8d05480 JB |
13080 | /* Ignore functions with missing or empty names. These are actually |
13081 | illegal according to the DWARF standard. */ | |
13082 | if (name == NULL) | |
13083 | { | |
b98664d3 | 13084 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13085 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13086 | return; |
13087 | } | |
13088 | ||
13089 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13090 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13091 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13092 | { |
ae4d0c03 PM |
13093 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13094 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13095 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13096 | "for subprogram DIE at %s"), |
13097 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13098 | return; |
13099 | } | |
c906108c | 13100 | |
3e29f34a MR |
13101 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13102 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13103 | |
34eaf542 TT |
13104 | /* If we have any template arguments, then we must allocate a |
13105 | different sort of symbol. */ | |
436c571c | 13106 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13107 | { |
13108 | if (child_die->tag == DW_TAG_template_type_param | |
13109 | || child_die->tag == DW_TAG_template_value_param) | |
13110 | { | |
8c14c3a3 | 13111 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13112 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13113 | break; |
13114 | } | |
13115 | } | |
13116 | ||
c24bdb02 | 13117 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13118 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13119 | (struct symbol *) templ_func); | |
4c2df51b | 13120 | |
81873cc8 | 13121 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13122 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13123 | cu->language); |
13124 | ||
4cecd739 DJ |
13125 | /* If there is a location expression for DW_AT_frame_base, record |
13126 | it. */ | |
e142c38c | 13127 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13128 | if (attr != nullptr) |
fe978cb0 | 13129 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13130 | |
63e43d3a PMR |
13131 | /* If there is a location for the static link, record it. */ |
13132 | newobj->static_link = NULL; | |
13133 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13134 | if (attr != nullptr) |
63e43d3a | 13135 | { |
224c3ddb SM |
13136 | newobj->static_link |
13137 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13138 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13139 | cu->addr_type ()); |
63e43d3a PMR |
13140 | } |
13141 | ||
c24bdb02 | 13142 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13143 | |
639d11d3 | 13144 | if (die->child != NULL) |
c906108c | 13145 | { |
639d11d3 | 13146 | child_die = die->child; |
c906108c SS |
13147 | while (child_die && child_die->tag) |
13148 | { | |
34eaf542 TT |
13149 | if (child_die->tag == DW_TAG_template_type_param |
13150 | || child_die->tag == DW_TAG_template_value_param) | |
13151 | { | |
13152 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13153 | ||
f1078f66 | 13154 | if (arg != NULL) |
2f4732b0 | 13155 | template_args.push_back (arg); |
34eaf542 TT |
13156 | } |
13157 | else | |
13158 | process_die (child_die, cu); | |
436c571c | 13159 | child_die = child_die->sibling; |
c906108c SS |
13160 | } |
13161 | } | |
13162 | ||
d389af10 JK |
13163 | inherit_abstract_dies (die, cu); |
13164 | ||
4a811a97 UW |
13165 | /* If we have a DW_AT_specification, we might need to import using |
13166 | directives from the context of the specification DIE. See the | |
13167 | comment in determine_prefix. */ | |
13168 | if (cu->language == language_cplus | |
13169 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13170 | { | |
13171 | struct dwarf2_cu *spec_cu = cu; | |
13172 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13173 | ||
13174 | while (spec_die) | |
13175 | { | |
13176 | child_die = spec_die->child; | |
13177 | while (child_die && child_die->tag) | |
13178 | { | |
13179 | if (child_die->tag == DW_TAG_imported_module) | |
13180 | process_die (child_die, spec_cu); | |
436c571c | 13181 | child_die = child_die->sibling; |
4a811a97 UW |
13182 | } |
13183 | ||
13184 | /* In some cases, GCC generates specification DIEs that | |
13185 | themselves contain DW_AT_specification attributes. */ | |
13186 | spec_die = die_specification (spec_die, &spec_cu); | |
13187 | } | |
13188 | } | |
13189 | ||
c24bdb02 | 13190 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13191 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13192 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13193 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13194 | |
df8a16a1 | 13195 | /* For C++, set the block's scope. */ |
45280282 IB |
13196 | if ((cu->language == language_cplus |
13197 | || cu->language == language_fortran | |
c44af4eb TT |
13198 | || cu->language == language_d |
13199 | || cu->language == language_rust) | |
4d4ec4e5 | 13200 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13201 | block_set_scope (block, determine_prefix (die, cu), |
13202 | &objfile->objfile_obstack); | |
df8a16a1 | 13203 | |
801e3a5b JB |
13204 | /* If we have address ranges, record them. */ |
13205 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13206 | |
a60f3166 | 13207 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13208 | |
34eaf542 | 13209 | /* Attach template arguments to function. */ |
2f4732b0 | 13210 | if (!template_args.empty ()) |
34eaf542 TT |
13211 | { |
13212 | gdb_assert (templ_func != NULL); | |
13213 | ||
2f4732b0 | 13214 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13215 | templ_func->template_arguments |
8d749320 SM |
13216 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13217 | templ_func->n_template_arguments); | |
34eaf542 | 13218 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13219 | template_args.data (), |
34eaf542 | 13220 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13221 | |
13222 | /* Make sure that the symtab is set on the new symbols. Even | |
13223 | though they don't appear in this symtab directly, other parts | |
13224 | of gdb assume that symbols do, and this is reasonably | |
13225 | true. */ | |
8634679f | 13226 | for (symbol *sym : template_args) |
3e1d3d8c | 13227 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13228 | } |
13229 | ||
208d8187 JB |
13230 | /* In C++, we can have functions nested inside functions (e.g., when |
13231 | a function declares a class that has methods). This means that | |
13232 | when we finish processing a function scope, we may need to go | |
13233 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13234 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13235 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13236 | |
921e78cf JB |
13237 | /* If we've finished processing a top-level function, subsequent |
13238 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13239 | if (cu->get_builder ()->outermost_context_p ()) |
13240 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13241 | } |
13242 | ||
13243 | /* Process all the DIES contained within a lexical block scope. Start | |
13244 | a new scope, process the dies, and then close the scope. */ | |
13245 | ||
13246 | static void | |
e7c27a73 | 13247 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13248 | { |
5e22e966 | 13249 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13250 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13251 | CORE_ADDR lowpc, highpc; |
13252 | struct die_info *child_die; | |
e142c38c DJ |
13253 | CORE_ADDR baseaddr; |
13254 | ||
b3b3bada | 13255 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13256 | |
13257 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13258 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13259 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13260 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13261 | describe ranges. */ |
e385593e JK |
13262 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13263 | { | |
13264 | case PC_BOUNDS_NOT_PRESENT: | |
13265 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13266 | there was no wrapping by that DW_TAG_lexical_block. | |
13267 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13268 | for (child_die = die->child; | |
13269 | child_die != NULL && child_die->tag; | |
436c571c | 13270 | child_die = child_die->sibling) |
4f7bc5ed TT |
13271 | { |
13272 | /* We might already be processing this DIE. This can happen | |
13273 | in an unusual circumstance -- where a subroutine A | |
13274 | appears lexically in another subroutine B, but A actually | |
13275 | inlines B. The recursion is broken here, rather than in | |
13276 | inherit_abstract_dies, because it seems better to simply | |
13277 | drop concrete children here. */ | |
13278 | if (!child_die->in_process) | |
13279 | process_die (child_die, cu); | |
13280 | } | |
e385593e JK |
13281 | return; |
13282 | case PC_BOUNDS_INVALID: | |
13283 | return; | |
13284 | } | |
3e29f34a MR |
13285 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13286 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13287 | |
c24bdb02 | 13288 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13289 | if (die->child != NULL) |
c906108c | 13290 | { |
639d11d3 | 13291 | child_die = die->child; |
c906108c SS |
13292 | while (child_die && child_die->tag) |
13293 | { | |
e7c27a73 | 13294 | process_die (child_die, cu); |
436c571c | 13295 | child_die = child_die->sibling; |
c906108c SS |
13296 | } |
13297 | } | |
3ea89b92 | 13298 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13299 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13300 | |
c24bdb02 KS |
13301 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13302 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13303 | { |
801e3a5b | 13304 | struct block *block |
c24bdb02 | 13305 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13306 | cstk.start_addr, highpc); |
801e3a5b JB |
13307 | |
13308 | /* Note that recording ranges after traversing children, as we | |
13309 | do here, means that recording a parent's ranges entails | |
13310 | walking across all its children's ranges as they appear in | |
13311 | the address map, which is quadratic behavior. | |
13312 | ||
13313 | It would be nicer to record the parent's ranges before | |
13314 | traversing its children, simply overriding whatever you find | |
13315 | there. But since we don't even decide whether to create a | |
13316 | block until after we've traversed its children, that's hard | |
13317 | to do. */ | |
13318 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13319 | } |
c24bdb02 KS |
13320 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13321 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13322 | } |
13323 | ||
216f72a1 | 13324 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13325 | |
13326 | static void | |
13327 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13328 | { | |
5e22e966 | 13329 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13330 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13331 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13332 | CORE_ADDR pc, baseaddr; |
13333 | struct attribute *attr; | |
13334 | struct call_site *call_site, call_site_local; | |
13335 | void **slot; | |
13336 | int nparams; | |
13337 | struct die_info *child_die; | |
13338 | ||
b3b3bada | 13339 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13340 | |
216f72a1 JK |
13341 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13342 | if (attr == NULL) | |
13343 | { | |
13344 | /* This was a pre-DWARF-5 GNU extension alias | |
13345 | for DW_AT_call_return_pc. */ | |
13346 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13347 | } | |
96408a79 SA |
13348 | if (!attr) |
13349 | { | |
b98664d3 | 13350 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13351 | "DIE %s [in module %s]"), |
13352 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13353 | return; |
13354 | } | |
cd6c91b4 | 13355 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13356 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13357 | |
13358 | if (cu->call_site_htab == NULL) | |
13359 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13360 | NULL, &objfile->objfile_obstack, | |
13361 | hashtab_obstack_allocate, NULL); | |
13362 | call_site_local.pc = pc; | |
13363 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13364 | if (*slot != NULL) | |
13365 | { | |
b98664d3 | 13366 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13367 | "DIE %s [in module %s]"), |
13368 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13369 | objfile_name (objfile)); |
96408a79 SA |
13370 | return; |
13371 | } | |
13372 | ||
13373 | /* Count parameters at the caller. */ | |
13374 | ||
13375 | nparams = 0; | |
13376 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13377 | child_die = child_die->sibling) |
96408a79 | 13378 | { |
216f72a1 JK |
13379 | if (child_die->tag != DW_TAG_call_site_parameter |
13380 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13381 | { |
b98664d3 | 13382 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13383 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13384 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13385 | objfile_name (objfile)); |
96408a79 SA |
13386 | continue; |
13387 | } | |
13388 | ||
13389 | nparams++; | |
13390 | } | |
13391 | ||
224c3ddb SM |
13392 | call_site |
13393 | = ((struct call_site *) | |
13394 | obstack_alloc (&objfile->objfile_obstack, | |
13395 | sizeof (*call_site) | |
13396 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13397 | *slot = call_site; |
13398 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13399 | call_site->pc = pc; | |
13400 | ||
216f72a1 JK |
13401 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13402 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13403 | { |
13404 | struct die_info *func_die; | |
13405 | ||
13406 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13407 | for (func_die = die->parent; | |
13408 | func_die && func_die->tag != DW_TAG_subprogram | |
13409 | && func_die->tag != DW_TAG_subroutine_type; | |
13410 | func_die = func_die->parent); | |
13411 | ||
216f72a1 JK |
13412 | /* DW_AT_call_all_calls is a superset |
13413 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13414 | if (func_die |
216f72a1 | 13415 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13416 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13417 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13418 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13419 | { | |
13420 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13421 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13422 | both the initial caller containing the real return address PC and | |
13423 | the final callee containing the current PC of a chain of tail | |
13424 | calls do not need to have the tail call list complete. But any | |
13425 | function candidate for a virtual tail call frame searched via | |
13426 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13427 | determined unambiguously. */ | |
13428 | } | |
13429 | else | |
13430 | { | |
13431 | struct type *func_type = NULL; | |
13432 | ||
13433 | if (func_die) | |
13434 | func_type = get_die_type (func_die, cu); | |
13435 | if (func_type != NULL) | |
13436 | { | |
78134374 | 13437 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13438 | |
13439 | /* Enlist this call site to the function. */ | |
13440 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13441 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13442 | } | |
13443 | else | |
b98664d3 | 13444 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13445 | "DIE %s [in module %s]"), |
13446 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13447 | } |
13448 | } | |
13449 | ||
216f72a1 JK |
13450 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13451 | if (attr == NULL) | |
13452 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13453 | if (attr == NULL) | |
13454 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13455 | if (attr == NULL) |
216f72a1 JK |
13456 | { |
13457 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13458 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13459 | } | |
96408a79 | 13460 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13461 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13462 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13463 | else if (attr->form_is_block ()) |
96408a79 SA |
13464 | { |
13465 | struct dwarf2_locexpr_baton *dlbaton; | |
13466 | ||
8d749320 | 13467 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13468 | dlbaton->data = DW_BLOCK (attr)->data; |
13469 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13470 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13471 | dlbaton->per_cu = cu->per_cu; |
13472 | ||
13473 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13474 | } | |
cd6c91b4 | 13475 | else if (attr->form_is_ref ()) |
96408a79 | 13476 | { |
96408a79 SA |
13477 | struct dwarf2_cu *target_cu = cu; |
13478 | struct die_info *target_die; | |
13479 | ||
ac9ec31b | 13480 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13481 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13482 | if (die_is_declaration (target_die, target_cu)) |
13483 | { | |
7d45c7c3 | 13484 | const char *target_physname; |
9112db09 JK |
13485 | |
13486 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13487 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13488 | if (target_physname == NULL) |
9112db09 | 13489 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13490 | if (target_physname == NULL) |
b98664d3 | 13491 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13492 | "physname, for referencing DIE %s [in module %s]"), |
13493 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13494 | else |
7d455152 | 13495 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13496 | } |
13497 | else | |
13498 | { | |
13499 | CORE_ADDR lowpc; | |
13500 | ||
13501 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13502 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13503 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13504 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13505 | "low pc, for referencing DIE %s [in module %s]"), |
13506 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13507 | else |
3e29f34a MR |
13508 | { |
13509 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13510 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13511 | } | |
96408a79 SA |
13512 | } |
13513 | } | |
13514 | else | |
b98664d3 | 13515 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13516 | "block nor reference, for DIE %s [in module %s]"), |
13517 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13518 | |
13519 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13520 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13521 | |
13522 | for (child_die = die->child; | |
13523 | child_die && child_die->tag; | |
436c571c | 13524 | child_die = child_die->sibling) |
96408a79 | 13525 | { |
96408a79 | 13526 | struct call_site_parameter *parameter; |
1788b2d3 | 13527 | struct attribute *loc, *origin; |
96408a79 | 13528 | |
216f72a1 JK |
13529 | if (child_die->tag != DW_TAG_call_site_parameter |
13530 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13531 | { |
13532 | /* Already printed the complaint above. */ | |
13533 | continue; | |
13534 | } | |
13535 | ||
13536 | gdb_assert (call_site->parameter_count < nparams); | |
13537 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13538 | ||
1788b2d3 JK |
13539 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13540 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13541 | register is contained in DW_AT_call_value. */ |
96408a79 | 13542 | |
24c5c679 | 13543 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13544 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13545 | if (origin == NULL) | |
13546 | { | |
13547 | /* This was a pre-DWARF-5 GNU extension alias | |
13548 | for DW_AT_call_parameter. */ | |
13549 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13550 | } | |
cd6c91b4 | 13551 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13552 | { |
1788b2d3 | 13553 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13554 | |
0826b30a | 13555 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13556 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13557 | { |
13558 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13559 | binding can be done only inside one CU. Such referenced DIE | |
13560 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13561 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13562 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13563 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13564 | objfile_name (objfile)); |
d76b7dbc JK |
13565 | continue; |
13566 | } | |
9c541725 PA |
13567 | parameter->u.param_cu_off |
13568 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13569 | } |
4fc6c0d5 | 13570 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13571 | { |
b98664d3 | 13572 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13573 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13574 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13575 | continue; |
13576 | } | |
24c5c679 | 13577 | else |
96408a79 | 13578 | { |
24c5c679 JK |
13579 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13580 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13581 | if (parameter->u.dwarf_reg != -1) | |
13582 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13583 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13584 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13585 | ¶meter->u.fb_offset)) | |
13586 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13587 | else | |
13588 | { | |
b98664d3 | 13589 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13590 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13591 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13592 | "[in module %s]"), |
9d8780f0 | 13593 | sect_offset_str (child_die->sect_off), |
9c541725 | 13594 | objfile_name (objfile)); |
24c5c679 JK |
13595 | continue; |
13596 | } | |
96408a79 SA |
13597 | } |
13598 | ||
216f72a1 JK |
13599 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13600 | if (attr == NULL) | |
13601 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13602 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13603 | { |
b98664d3 | 13604 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13605 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13606 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13607 | objfile_name (objfile)); |
96408a79 SA |
13608 | continue; |
13609 | } | |
13610 | parameter->value = DW_BLOCK (attr)->data; | |
13611 | parameter->value_size = DW_BLOCK (attr)->size; | |
13612 | ||
13613 | /* Parameters are not pre-cleared by memset above. */ | |
13614 | parameter->data_value = NULL; | |
13615 | parameter->data_value_size = 0; | |
13616 | call_site->parameter_count++; | |
13617 | ||
216f72a1 JK |
13618 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13619 | if (attr == NULL) | |
13620 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13621 | if (attr != nullptr) |
96408a79 | 13622 | { |
4fc6c0d5 | 13623 | if (!attr->form_is_block ()) |
b98664d3 | 13624 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13625 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13626 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13627 | objfile_name (objfile)); |
96408a79 SA |
13628 | else |
13629 | { | |
13630 | parameter->data_value = DW_BLOCK (attr)->data; | |
13631 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13632 | } | |
13633 | } | |
13634 | } | |
13635 | } | |
13636 | ||
71a3c369 TT |
13637 | /* Helper function for read_variable. If DIE represents a virtual |
13638 | table, then return the type of the concrete object that is | |
13639 | associated with the virtual table. Otherwise, return NULL. */ | |
13640 | ||
13641 | static struct type * | |
13642 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13643 | { | |
13644 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13645 | if (attr == NULL) | |
13646 | return NULL; | |
13647 | ||
13648 | /* Find the type DIE. */ | |
13649 | struct die_info *type_die = NULL; | |
13650 | struct dwarf2_cu *type_cu = cu; | |
13651 | ||
cd6c91b4 | 13652 | if (attr->form_is_ref ()) |
71a3c369 TT |
13653 | type_die = follow_die_ref (die, attr, &type_cu); |
13654 | if (type_die == NULL) | |
13655 | return NULL; | |
13656 | ||
13657 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13658 | return NULL; | |
13659 | return die_containing_type (type_die, type_cu); | |
13660 | } | |
13661 | ||
13662 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13663 | ||
13664 | static void | |
13665 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13666 | { | |
13667 | struct rust_vtable_symbol *storage = NULL; | |
13668 | ||
13669 | if (cu->language == language_rust) | |
13670 | { | |
13671 | struct type *containing_type = rust_containing_type (die, cu); | |
13672 | ||
13673 | if (containing_type != NULL) | |
13674 | { | |
5e22e966 | 13675 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13676 | |
8c14c3a3 | 13677 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13678 | storage->concrete_type = containing_type; |
cf724bc9 | 13679 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13680 | } |
13681 | } | |
13682 | ||
e4a62c65 TV |
13683 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13684 | struct attribute *abstract_origin | |
13685 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13686 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13687 | if (res == NULL && loc && abstract_origin) | |
13688 | { | |
13689 | /* We have a variable without a name, but with a location and an abstract | |
13690 | origin. This may be a concrete instance of an abstract variable | |
13691 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13692 | later. */ | |
13693 | struct dwarf2_cu *origin_cu = cu; | |
13694 | struct die_info *origin_die | |
13695 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13696 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13697 | per_objfile->per_bfd->abstract_to_concrete | |
13698 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13699 | } |
71a3c369 TT |
13700 | } |
13701 | ||
43988095 JK |
13702 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13703 | reading .debug_rnglists. | |
13704 | Callback's type should be: | |
13705 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13706 | Return true if the attributes are present and valid, otherwise, | |
13707 | return false. */ | |
13708 | ||
13709 | template <typename Callback> | |
13710 | static bool | |
13711 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13712 | Callback &&callback) | |
13713 | { | |
5e22e966 | 13714 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 13715 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13716 | bfd *obfd = objfile->obfd; |
43988095 | 13717 | /* Base address selection entry. */ |
2b24b6e4 | 13718 | gdb::optional<CORE_ADDR> base; |
43988095 | 13719 | const gdb_byte *buffer; |
43988095 JK |
13720 | CORE_ADDR baseaddr; |
13721 | bool overflow = false; | |
13722 | ||
43988095 JK |
13723 | base = cu->base_address; |
13724 | ||
5989a64e SM |
13725 | dwarf2_per_objfile->per_bfd->rnglists.read (objfile); |
13726 | if (offset >= dwarf2_per_objfile->per_bfd->rnglists.size) | |
43988095 | 13727 | { |
b98664d3 | 13728 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13729 | offset); |
13730 | return false; | |
13731 | } | |
5989a64e | 13732 | buffer = dwarf2_per_objfile->per_bfd->rnglists.buffer + offset; |
43988095 | 13733 | |
b3b3bada | 13734 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13735 | |
13736 | while (1) | |
13737 | { | |
7814882a JK |
13738 | /* Initialize it due to a false compiler warning. */ |
13739 | CORE_ADDR range_beginning = 0, range_end = 0; | |
5989a64e SM |
13740 | const gdb_byte *buf_end = (dwarf2_per_objfile->per_bfd->rnglists.buffer |
13741 | + dwarf2_per_objfile->per_bfd->rnglists.size); | |
43988095 JK |
13742 | unsigned int bytes_read; |
13743 | ||
13744 | if (buffer == buf_end) | |
13745 | { | |
13746 | overflow = true; | |
13747 | break; | |
13748 | } | |
13749 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13750 | switch (rlet) | |
13751 | { | |
13752 | case DW_RLE_end_of_list: | |
13753 | break; | |
13754 | case DW_RLE_base_address: | |
13755 | if (buffer + cu->header.addr_size > buf_end) | |
13756 | { | |
13757 | overflow = true; | |
13758 | break; | |
13759 | } | |
c8a7a66f | 13760 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13761 | buffer += bytes_read; |
13762 | break; | |
13763 | case DW_RLE_start_length: | |
13764 | if (buffer + cu->header.addr_size > buf_end) | |
13765 | { | |
13766 | overflow = true; | |
13767 | break; | |
13768 | } | |
c8a7a66f TT |
13769 | range_beginning = cu->header.read_address (obfd, buffer, |
13770 | &bytes_read); | |
43988095 JK |
13771 | buffer += bytes_read; |
13772 | range_end = (range_beginning | |
13773 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13774 | buffer += bytes_read; | |
13775 | if (buffer > buf_end) | |
13776 | { | |
13777 | overflow = true; | |
13778 | break; | |
13779 | } | |
13780 | break; | |
13781 | case DW_RLE_offset_pair: | |
13782 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13783 | buffer += bytes_read; | |
13784 | if (buffer > buf_end) | |
13785 | { | |
13786 | overflow = true; | |
13787 | break; | |
13788 | } | |
13789 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13790 | buffer += bytes_read; | |
13791 | if (buffer > buf_end) | |
13792 | { | |
13793 | overflow = true; | |
13794 | break; | |
13795 | } | |
13796 | break; | |
13797 | case DW_RLE_start_end: | |
13798 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13799 | { | |
13800 | overflow = true; | |
13801 | break; | |
13802 | } | |
c8a7a66f TT |
13803 | range_beginning = cu->header.read_address (obfd, buffer, |
13804 | &bytes_read); | |
43988095 | 13805 | buffer += bytes_read; |
c8a7a66f | 13806 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13807 | buffer += bytes_read; |
13808 | break; | |
13809 | default: | |
b98664d3 | 13810 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13811 | return false; |
13812 | } | |
13813 | if (rlet == DW_RLE_end_of_list || overflow) | |
13814 | break; | |
13815 | if (rlet == DW_RLE_base_address) | |
13816 | continue; | |
13817 | ||
2b24b6e4 | 13818 | if (!base.has_value ()) |
43988095 JK |
13819 | { |
13820 | /* We have no valid base address for the ranges | |
13821 | data. */ | |
b98664d3 | 13822 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13823 | return false; |
13824 | } | |
13825 | ||
13826 | if (range_beginning > range_end) | |
13827 | { | |
13828 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13829 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13830 | return false; |
13831 | } | |
13832 | ||
13833 | /* Empty range entries have no effect. */ | |
13834 | if (range_beginning == range_end) | |
13835 | continue; | |
13836 | ||
2b24b6e4 TT |
13837 | range_beginning += *base; |
13838 | range_end += *base; | |
43988095 JK |
13839 | |
13840 | /* A not-uncommon case of bad debug info. | |
13841 | Don't pollute the addrmap with bad data. */ | |
13842 | if (range_beginning + baseaddr == 0 | |
5989a64e | 13843 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
43988095 | 13844 | { |
b98664d3 | 13845 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13846 | " [in module %s]"), objfile_name (objfile)); |
13847 | continue; | |
13848 | } | |
13849 | ||
13850 | callback (range_beginning, range_end); | |
13851 | } | |
13852 | ||
13853 | if (overflow) | |
13854 | { | |
b98664d3 | 13855 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13856 | "for DW_AT_ranges attribute"), |
13857 | offset); | |
13858 | return false; | |
13859 | } | |
13860 | ||
13861 | return true; | |
13862 | } | |
13863 | ||
13864 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13865 | Callback's type should be: | |
13866 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13867 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13868 | |
43988095 | 13869 | template <typename Callback> |
43039443 | 13870 | static int |
5f46c5a5 | 13871 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13872 | Callback &&callback) |
43039443 | 13873 | { |
5e22e966 SM |
13874 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13875 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
13876 | struct comp_unit_head *cu_header = &cu->header; |
13877 | bfd *obfd = objfile->obfd; | |
13878 | unsigned int addr_size = cu_header->addr_size; | |
13879 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13880 | /* Base address selection entry. */ | |
2b24b6e4 | 13881 | gdb::optional<CORE_ADDR> base; |
43039443 | 13882 | unsigned int dummy; |
d521ce57 | 13883 | const gdb_byte *buffer; |
ff013f42 | 13884 | CORE_ADDR baseaddr; |
43039443 | 13885 | |
43988095 JK |
13886 | if (cu_header->version >= 5) |
13887 | return dwarf2_rnglists_process (offset, cu, callback); | |
13888 | ||
d00adf39 | 13889 | base = cu->base_address; |
43039443 | 13890 | |
5e22e966 SM |
13891 | per_objfile->per_bfd->ranges.read (objfile); |
13892 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 13893 | { |
b98664d3 | 13894 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13895 | offset); |
13896 | return 0; | |
13897 | } | |
5e22e966 | 13898 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 13899 | |
b3b3bada | 13900 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13901 | |
43039443 JK |
13902 | while (1) |
13903 | { | |
13904 | CORE_ADDR range_beginning, range_end; | |
13905 | ||
c8a7a66f | 13906 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13907 | buffer += addr_size; |
c8a7a66f | 13908 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13909 | buffer += addr_size; |
13910 | offset += 2 * addr_size; | |
13911 | ||
13912 | /* An end of list marker is a pair of zero addresses. */ | |
13913 | if (range_beginning == 0 && range_end == 0) | |
13914 | /* Found the end of list entry. */ | |
13915 | break; | |
13916 | ||
13917 | /* Each base address selection entry is a pair of 2 values. | |
13918 | The first is the largest possible address, the second is | |
13919 | the base address. Check for a base address here. */ | |
13920 | if ((range_beginning & mask) == mask) | |
13921 | { | |
28d2bfb9 AB |
13922 | /* If we found the largest possible address, then we already |
13923 | have the base address in range_end. */ | |
13924 | base = range_end; | |
43039443 JK |
13925 | continue; |
13926 | } | |
13927 | ||
2b24b6e4 | 13928 | if (!base.has_value ()) |
43039443 JK |
13929 | { |
13930 | /* We have no valid base address for the ranges | |
13931 | data. */ | |
b98664d3 | 13932 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13933 | return 0; |
13934 | } | |
13935 | ||
9277c30c UW |
13936 | if (range_beginning > range_end) |
13937 | { | |
13938 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13939 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13940 | return 0; |
13941 | } | |
13942 | ||
13943 | /* Empty range entries have no effect. */ | |
13944 | if (range_beginning == range_end) | |
13945 | continue; | |
13946 | ||
2b24b6e4 TT |
13947 | range_beginning += *base; |
13948 | range_end += *base; | |
43039443 | 13949 | |
01093045 DE |
13950 | /* A not-uncommon case of bad debug info. |
13951 | Don't pollute the addrmap with bad data. */ | |
13952 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 13953 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 13954 | { |
b98664d3 | 13955 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13956 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13957 | continue; |
13958 | } | |
13959 | ||
5f46c5a5 JK |
13960 | callback (range_beginning, range_end); |
13961 | } | |
13962 | ||
13963 | return 1; | |
13964 | } | |
13965 | ||
13966 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13967 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13968 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13969 | ||
13970 | static int | |
13971 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13972 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13973 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13974 | { |
5e22e966 | 13975 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13976 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 13977 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13978 | int low_set = 0; |
13979 | CORE_ADDR low = 0; | |
13980 | CORE_ADDR high = 0; | |
13981 | int retval; | |
13982 | ||
13983 | retval = dwarf2_ranges_process (offset, cu, | |
13984 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13985 | { | |
9277c30c | 13986 | if (ranges_pst != NULL) |
3e29f34a MR |
13987 | { |
13988 | CORE_ADDR lowpc; | |
13989 | CORE_ADDR highpc; | |
13990 | ||
79748972 TT |
13991 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13992 | range_beginning + baseaddr) | |
13993 | - baseaddr); | |
13994 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13995 | range_end + baseaddr) | |
13996 | - baseaddr); | |
d320c2b5 TT |
13997 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13998 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13999 | } |
ff013f42 | 14000 | |
43039443 JK |
14001 | /* FIXME: This is recording everything as a low-high |
14002 | segment of consecutive addresses. We should have a | |
14003 | data structure for discontiguous block ranges | |
14004 | instead. */ | |
14005 | if (! low_set) | |
14006 | { | |
14007 | low = range_beginning; | |
14008 | high = range_end; | |
14009 | low_set = 1; | |
14010 | } | |
14011 | else | |
14012 | { | |
14013 | if (range_beginning < low) | |
14014 | low = range_beginning; | |
14015 | if (range_end > high) | |
14016 | high = range_end; | |
14017 | } | |
5f46c5a5 JK |
14018 | }); |
14019 | if (!retval) | |
14020 | return 0; | |
43039443 JK |
14021 | |
14022 | if (! low_set) | |
14023 | /* If the first entry is an end-of-list marker, the range | |
14024 | describes an empty scope, i.e. no instructions. */ | |
14025 | return 0; | |
14026 | ||
14027 | if (low_return) | |
14028 | *low_return = low; | |
14029 | if (high_return) | |
14030 | *high_return = high; | |
14031 | return 1; | |
14032 | } | |
14033 | ||
3a2b436a JK |
14034 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14035 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14036 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14037 | |
3a2b436a | 14038 | static enum pc_bounds_kind |
af34e669 | 14039 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14040 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14041 | dwarf2_psymtab *pst) |
c906108c | 14042 | { |
5e22e966 | 14043 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
c906108c | 14044 | struct attribute *attr; |
91da1414 | 14045 | struct attribute *attr_high; |
af34e669 DJ |
14046 | CORE_ADDR low = 0; |
14047 | CORE_ADDR high = 0; | |
e385593e | 14048 | enum pc_bounds_kind ret; |
c906108c | 14049 | |
91da1414 MW |
14050 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14051 | if (attr_high) | |
af34e669 | 14052 | { |
e142c38c | 14053 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14054 | if (attr != nullptr) |
91da1414 | 14055 | { |
cd6c91b4 TT |
14056 | low = attr->value_as_address (); |
14057 | high = attr_high->value_as_address (); | |
14058 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14059 | high += low; |
91da1414 | 14060 | } |
af34e669 DJ |
14061 | else |
14062 | /* Found high w/o low attribute. */ | |
e385593e | 14063 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14064 | |
14065 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14066 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14067 | } |
c906108c | 14068 | else |
af34e669 | 14069 | { |
e142c38c | 14070 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14071 | if (attr != NULL) |
14072 | { | |
18a8505e | 14073 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14074 | We take advantage of the fact that DW_AT_ranges does not appear |
14075 | in DW_TAG_compile_unit of DWO files. */ | |
14076 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14077 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14078 | + (need_ranges_base | |
14079 | ? cu->ranges_base | |
14080 | : 0)); | |
2e3cf129 | 14081 | |
af34e669 | 14082 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14083 | .debug_ranges section. */ |
2e3cf129 | 14084 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14085 | return PC_BOUNDS_INVALID; |
43039443 | 14086 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14087 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14088 | } |
e385593e JK |
14089 | else |
14090 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14091 | } |
c906108c | 14092 | |
48fbe735 | 14093 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14094 | if (high <= low) |
e385593e | 14095 | return PC_BOUNDS_INVALID; |
c906108c SS |
14096 | |
14097 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14098 | eliminate duplicate copies of functions and vtables and such. | |
14099 | The linker will arbitrarily choose one and discard the others. | |
14100 | The AT_*_pc values for such functions refer to local labels in | |
14101 | these sections. If the section from that file was discarded, the | |
14102 | labels are not in the output, so the relocs get a value of 0. | |
14103 | If this is a discarded function, mark the pc bounds as invalid, | |
14104 | so that GDB will ignore it. */ | |
5989a64e | 14105 | if (low == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14106 | return PC_BOUNDS_INVALID; |
c906108c SS |
14107 | |
14108 | *lowpc = low; | |
96408a79 SA |
14109 | if (highpc) |
14110 | *highpc = high; | |
af34e669 | 14111 | return ret; |
c906108c SS |
14112 | } |
14113 | ||
b084d499 JB |
14114 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14115 | its low and high PC addresses. Do nothing if these addresses could not | |
14116 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14117 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14118 | ||
14119 | static void | |
14120 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14121 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14122 | struct dwarf2_cu *cu) | |
14123 | { | |
14124 | CORE_ADDR low, high; | |
14125 | struct die_info *child = die->child; | |
14126 | ||
e385593e | 14127 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14128 | { |
325fac50 PA |
14129 | *lowpc = std::min (*lowpc, low); |
14130 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14131 | } |
14132 | ||
14133 | /* If the language does not allow nested subprograms (either inside | |
14134 | subprograms or lexical blocks), we're done. */ | |
14135 | if (cu->language != language_ada) | |
14136 | return; | |
6e70227d | 14137 | |
b084d499 JB |
14138 | /* Check all the children of the given DIE. If it contains nested |
14139 | subprograms, then check their pc bounds. Likewise, we need to | |
14140 | check lexical blocks as well, as they may also contain subprogram | |
14141 | definitions. */ | |
14142 | while (child && child->tag) | |
14143 | { | |
14144 | if (child->tag == DW_TAG_subprogram | |
14145 | || child->tag == DW_TAG_lexical_block) | |
14146 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14147 | child = child->sibling; |
b084d499 JB |
14148 | } |
14149 | } | |
14150 | ||
fae299cd DC |
14151 | /* Get the low and high pc's represented by the scope DIE, and store |
14152 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14153 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14154 | ||
14155 | static void | |
14156 | get_scope_pc_bounds (struct die_info *die, | |
14157 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14158 | struct dwarf2_cu *cu) | |
14159 | { | |
14160 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14161 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14162 | CORE_ADDR current_low, current_high; | |
14163 | ||
3a2b436a | 14164 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14165 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14166 | { |
14167 | best_low = current_low; | |
14168 | best_high = current_high; | |
14169 | } | |
14170 | else | |
14171 | { | |
14172 | struct die_info *child = die->child; | |
14173 | ||
14174 | while (child && child->tag) | |
14175 | { | |
14176 | switch (child->tag) { | |
14177 | case DW_TAG_subprogram: | |
b084d499 | 14178 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14179 | break; |
14180 | case DW_TAG_namespace: | |
f55ee35c | 14181 | case DW_TAG_module: |
fae299cd DC |
14182 | /* FIXME: carlton/2004-01-16: Should we do this for |
14183 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14184 | that current GCC's always emit the DIEs corresponding | |
14185 | to definitions of methods of classes as children of a | |
14186 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14187 | the DIEs giving the declarations, which could be | |
14188 | anywhere). But I don't see any reason why the | |
14189 | standards says that they have to be there. */ | |
14190 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14191 | ||
14192 | if (current_low != ((CORE_ADDR) -1)) | |
14193 | { | |
325fac50 PA |
14194 | best_low = std::min (best_low, current_low); |
14195 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14196 | } |
14197 | break; | |
14198 | default: | |
0963b4bd | 14199 | /* Ignore. */ |
fae299cd DC |
14200 | break; |
14201 | } | |
14202 | ||
436c571c | 14203 | child = child->sibling; |
fae299cd DC |
14204 | } |
14205 | } | |
14206 | ||
14207 | *lowpc = best_low; | |
14208 | *highpc = best_high; | |
14209 | } | |
14210 | ||
801e3a5b JB |
14211 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14212 | in DIE. */ | |
380bca97 | 14213 | |
801e3a5b JB |
14214 | static void |
14215 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14216 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14217 | { | |
5e22e966 | 14218 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14219 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14220 | struct attribute *attr; |
91da1414 | 14221 | struct attribute *attr_high; |
801e3a5b | 14222 | |
91da1414 MW |
14223 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14224 | if (attr_high) | |
801e3a5b | 14225 | { |
801e3a5b | 14226 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14227 | if (attr != nullptr) |
801e3a5b | 14228 | { |
cd6c91b4 TT |
14229 | CORE_ADDR low = attr->value_as_address (); |
14230 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14231 | |
cd6c91b4 | 14232 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14233 | high += low; |
9a619af0 | 14234 | |
3e29f34a MR |
14235 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14236 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14237 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14238 | } |
14239 | } | |
14240 | ||
14241 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14242 | if (attr != nullptr) |
801e3a5b | 14243 | { |
18a8505e | 14244 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14245 | We take advantage of the fact that DW_AT_ranges does not appear |
14246 | in DW_TAG_compile_unit of DWO files. */ | |
14247 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14248 | |
14249 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14250 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14251 | unsigned long offset = (DW_UNSND (attr) |
14252 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14253 | |
2d5f09ec | 14254 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14255 | dwarf2_ranges_process (offset, cu, |
14256 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14257 | { | |
58fdfd2c JK |
14258 | start += baseaddr; |
14259 | end += baseaddr; | |
5f46c5a5 JK |
14260 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14261 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14262 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14263 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14264 | }); |
2d5f09ec KB |
14265 | |
14266 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14267 | } |
14268 | } | |
14269 | ||
685b1105 JK |
14270 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14271 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14272 | |
685b1105 JK |
14273 | static void |
14274 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14275 | { |
38360086 | 14276 | int major, minor; |
60d5a603 JK |
14277 | |
14278 | if (cu->producer == NULL) | |
14279 | { | |
14280 | /* For unknown compilers expect their behavior is DWARF version | |
14281 | compliant. | |
14282 | ||
14283 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14284 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14285 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14286 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14287 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14288 | } |
b1ffba5a | 14289 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14290 | { |
38360086 MW |
14291 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14292 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14293 | } |
5230b05a | 14294 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14295 | { |
14296 | cu->producer_is_icc = true; | |
14297 | cu->producer_is_icc_lt_14 = major < 14; | |
14298 | } | |
c258c396 JD |
14299 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14300 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14301 | else |
14302 | { | |
14303 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14304 | compliant. */ | |
60d5a603 JK |
14305 | } |
14306 | ||
9068261f | 14307 | cu->checked_producer = true; |
685b1105 | 14308 | } |
ba919b58 | 14309 | |
685b1105 JK |
14310 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14311 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14312 | during 4.6.0 experimental. */ | |
14313 | ||
9068261f | 14314 | static bool |
685b1105 JK |
14315 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14316 | { | |
14317 | if (!cu->checked_producer) | |
14318 | check_producer (cu); | |
14319 | ||
14320 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14321 | } |
14322 | ||
c258c396 JD |
14323 | |
14324 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14325 | with incorrect is_stmt attributes. */ | |
14326 | ||
14327 | static bool | |
14328 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14329 | { | |
14330 | if (!cu->checked_producer) | |
14331 | check_producer (cu); | |
14332 | ||
14333 | return cu->producer_is_codewarrior; | |
14334 | } | |
14335 | ||
405feb71 | 14336 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14337 | DW_AT_accessibility. */ |
14338 | ||
14339 | static enum dwarf_access_attribute | |
14340 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14341 | { | |
14342 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14343 | { | |
14344 | /* The default DWARF 2 accessibility for members is public, the default | |
14345 | accessibility for inheritance is private. */ | |
14346 | ||
14347 | if (die->tag != DW_TAG_inheritance) | |
14348 | return DW_ACCESS_public; | |
14349 | else | |
14350 | return DW_ACCESS_private; | |
14351 | } | |
14352 | else | |
14353 | { | |
14354 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14355 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14356 | depends on the container kind. */ | |
14357 | ||
14358 | if (die->parent->tag == DW_TAG_class_type) | |
14359 | return DW_ACCESS_private; | |
14360 | else | |
14361 | return DW_ACCESS_public; | |
14362 | } | |
14363 | } | |
14364 | ||
74ac6d43 TT |
14365 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14366 | offset. If the attribute was not found return 0, otherwise return | |
14367 | 1. If it was found but could not properly be handled, set *OFFSET | |
14368 | to 0. */ | |
14369 | ||
14370 | static int | |
14371 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14372 | LONGEST *offset) | |
14373 | { | |
14374 | struct attribute *attr; | |
14375 | ||
14376 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14377 | if (attr != NULL) | |
14378 | { | |
14379 | *offset = 0; | |
14380 | ||
14381 | /* Note that we do not check for a section offset first here. | |
14382 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14383 | so if we see it, we can assume that a constant form is really | |
14384 | a constant and not a section offset. */ | |
cd6c91b4 | 14385 | if (attr->form_is_constant ()) |
0826b30a | 14386 | *offset = attr->constant_value (0); |
cd6c91b4 | 14387 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14388 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14389 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14390 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14391 | else | |
14392 | dwarf2_complex_location_expr_complaint (); | |
14393 | ||
14394 | return 1; | |
14395 | } | |
14396 | ||
14397 | return 0; | |
14398 | } | |
14399 | ||
7d79de9a TT |
14400 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14401 | ||
14402 | static void | |
14403 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14404 | struct field *field) | |
14405 | { | |
14406 | struct attribute *attr; | |
14407 | ||
14408 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14409 | if (attr != NULL) | |
14410 | { | |
14411 | if (attr->form_is_constant ()) | |
14412 | { | |
14413 | LONGEST offset = attr->constant_value (0); | |
14414 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14415 | } | |
14416 | else if (attr->form_is_section_offset ()) | |
14417 | dwarf2_complex_location_expr_complaint (); | |
14418 | else if (attr->form_is_block ()) | |
14419 | { | |
14420 | bool handled; | |
14421 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14422 | if (handled) | |
14423 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14424 | else | |
14425 | { | |
5e22e966 SM |
14426 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14427 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14428 | struct dwarf2_locexpr_baton *dlbaton |
14429 | = XOBNEW (&objfile->objfile_obstack, | |
14430 | struct dwarf2_locexpr_baton); | |
14431 | dlbaton->data = DW_BLOCK (attr)->data; | |
14432 | dlbaton->size = DW_BLOCK (attr)->size; | |
14433 | /* When using this baton, we want to compute the address | |
14434 | of the field, not the value. This is why | |
14435 | is_reference is set to false here. */ | |
14436 | dlbaton->is_reference = false; | |
5e22e966 | 14437 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14438 | dlbaton->per_cu = cu->per_cu; |
14439 | ||
14440 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14441 | } | |
14442 | } | |
14443 | else | |
14444 | dwarf2_complex_location_expr_complaint (); | |
14445 | } | |
14446 | } | |
14447 | ||
c906108c SS |
14448 | /* Add an aggregate field to the field list. */ |
14449 | ||
14450 | static void | |
107d2387 | 14451 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14452 | struct dwarf2_cu *cu) |
6e70227d | 14453 | { |
5e22e966 | 14454 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14455 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14456 | struct nextfield *new_field; |
14457 | struct attribute *attr; | |
14458 | struct field *fp; | |
15d034d0 | 14459 | const char *fieldname = ""; |
c906108c | 14460 | |
7d0ccb61 DJ |
14461 | if (die->tag == DW_TAG_inheritance) |
14462 | { | |
be2daae6 TT |
14463 | fip->baseclasses.emplace_back (); |
14464 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14465 | } |
14466 | else | |
14467 | { | |
be2daae6 TT |
14468 | fip->fields.emplace_back (); |
14469 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14470 | } |
be2daae6 | 14471 | |
9c6a1327 TT |
14472 | new_field->offset = die->sect_off; |
14473 | ||
e142c38c | 14474 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14475 | if (attr != nullptr) |
c906108c | 14476 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14477 | else |
14478 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14479 | if (new_field->accessibility != DW_ACCESS_public) |
14480 | fip->non_public_fields = 1; | |
60d5a603 | 14481 | |
e142c38c | 14482 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14483 | if (attr != nullptr) |
c906108c | 14484 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14485 | else |
14486 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14487 | |
14488 | fp = &new_field->field; | |
a9a9bd0f | 14489 | |
e142c38c | 14490 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14491 | { |
a9a9bd0f | 14492 | /* Data member other than a C++ static data member. */ |
6e70227d | 14493 | |
c906108c | 14494 | /* Get type of field. */ |
e7c27a73 | 14495 | fp->type = die_type (die, cu); |
c906108c | 14496 | |
d6a843b5 | 14497 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14498 | |
c906108c | 14499 | /* Get bit size of field (zero if none). */ |
e142c38c | 14500 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14501 | if (attr != nullptr) |
c906108c SS |
14502 | { |
14503 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14504 | } | |
14505 | else | |
14506 | { | |
14507 | FIELD_BITSIZE (*fp) = 0; | |
14508 | } | |
14509 | ||
14510 | /* Get bit offset of field. */ | |
7d79de9a | 14511 | handle_data_member_location (die, cu, fp); |
e142c38c | 14512 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14513 | if (attr != nullptr) |
c906108c | 14514 | { |
d5a22e77 | 14515 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14516 | { |
14517 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14518 | additional bit offset from the MSB of the containing |
14519 | anonymous object to the MSB of the field. We don't | |
14520 | have to do anything special since we don't need to | |
14521 | know the size of the anonymous object. */ | |
f41f5e61 | 14522 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14523 | } |
14524 | else | |
14525 | { | |
14526 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14527 | MSB of the anonymous object, subtract off the number of |
14528 | bits from the MSB of the field to the MSB of the | |
14529 | object, and then subtract off the number of bits of | |
14530 | the field itself. The result is the bit offset of | |
14531 | the LSB of the field. */ | |
c906108c SS |
14532 | int anonymous_size; |
14533 | int bit_offset = DW_UNSND (attr); | |
14534 | ||
e142c38c | 14535 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14536 | if (attr != nullptr) |
c906108c SS |
14537 | { |
14538 | /* The size of the anonymous object containing | |
14539 | the bit field is explicit, so use the | |
14540 | indicated size (in bytes). */ | |
14541 | anonymous_size = DW_UNSND (attr); | |
14542 | } | |
14543 | else | |
14544 | { | |
14545 | /* The size of the anonymous object containing | |
14546 | the bit field must be inferred from the type | |
14547 | attribute of the data member containing the | |
14548 | bit field. */ | |
14549 | anonymous_size = TYPE_LENGTH (fp->type); | |
14550 | } | |
f41f5e61 PA |
14551 | SET_FIELD_BITPOS (*fp, |
14552 | (FIELD_BITPOS (*fp) | |
14553 | + anonymous_size * bits_per_byte | |
14554 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14555 | } |
14556 | } | |
da5b30da AA |
14557 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14558 | if (attr != NULL) | |
14559 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14560 | + attr->constant_value (0))); |
c906108c SS |
14561 | |
14562 | /* Get name of field. */ | |
39cbfefa DJ |
14563 | fieldname = dwarf2_name (die, cu); |
14564 | if (fieldname == NULL) | |
14565 | fieldname = ""; | |
d8151005 DJ |
14566 | |
14567 | /* The name is already allocated along with this objfile, so we don't | |
14568 | need to duplicate it for the type. */ | |
14569 | fp->name = fieldname; | |
c906108c SS |
14570 | |
14571 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14572 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14573 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14574 | { |
d48cc9dd | 14575 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14576 | new_field->accessibility = DW_ACCESS_private; |
14577 | fip->non_public_fields = 1; | |
14578 | } | |
14579 | } | |
a9a9bd0f | 14580 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14581 | { |
a9a9bd0f DC |
14582 | /* C++ static member. */ |
14583 | ||
14584 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14585 | is a declaration, but all versions of G++ as of this writing | |
14586 | (so through at least 3.2.1) incorrectly generate | |
14587 | DW_TAG_variable tags. */ | |
6e70227d | 14588 | |
ff355380 | 14589 | const char *physname; |
c906108c | 14590 | |
a9a9bd0f | 14591 | /* Get name of field. */ |
39cbfefa DJ |
14592 | fieldname = dwarf2_name (die, cu); |
14593 | if (fieldname == NULL) | |
c906108c SS |
14594 | return; |
14595 | ||
254e6b9e | 14596 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14597 | if (attr |
14598 | /* Only create a symbol if this is an external value. | |
14599 | new_symbol checks this and puts the value in the global symbol | |
14600 | table, which we want. If it is not external, new_symbol | |
14601 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14602 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14603 | { |
14604 | /* A static const member, not much different than an enum as far as | |
14605 | we're concerned, except that we can support more types. */ | |
14606 | new_symbol (die, NULL, cu); | |
14607 | } | |
14608 | ||
2df3850c | 14609 | /* Get physical name. */ |
ff355380 | 14610 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14611 | |
d8151005 DJ |
14612 | /* The name is already allocated along with this objfile, so we don't |
14613 | need to duplicate it for the type. */ | |
14614 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14615 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14616 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14617 | } |
14618 | else if (die->tag == DW_TAG_inheritance) | |
14619 | { | |
74ac6d43 | 14620 | /* C++ base class field. */ |
7d79de9a | 14621 | handle_data_member_location (die, cu, fp); |
c906108c | 14622 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14623 | FIELD_TYPE (*fp) = die_type (die, cu); |
7d93a1e0 | 14624 | FIELD_NAME (*fp) = fp->type->name (); |
c906108c | 14625 | } |
2ddeaf8a TT |
14626 | else |
14627 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14628 | } |
14629 | ||
883fd55a KS |
14630 | /* Can the type given by DIE define another type? */ |
14631 | ||
14632 | static bool | |
14633 | type_can_define_types (const struct die_info *die) | |
14634 | { | |
14635 | switch (die->tag) | |
14636 | { | |
14637 | case DW_TAG_typedef: | |
14638 | case DW_TAG_class_type: | |
14639 | case DW_TAG_structure_type: | |
14640 | case DW_TAG_union_type: | |
14641 | case DW_TAG_enumeration_type: | |
14642 | return true; | |
14643 | ||
14644 | default: | |
14645 | return false; | |
14646 | } | |
14647 | } | |
14648 | ||
14649 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14650 | |
14651 | static void | |
883fd55a KS |
14652 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14653 | struct dwarf2_cu *cu) | |
6e70227d | 14654 | { |
be2daae6 TT |
14655 | struct decl_field fp; |
14656 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14657 | |
883fd55a | 14658 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14659 | |
883fd55a | 14660 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14661 | fp.name = dwarf2_name (die, cu); |
14662 | fp.type = read_type_die (die, cu); | |
98751a41 | 14663 | |
c191a687 KS |
14664 | /* Save accessibility. */ |
14665 | enum dwarf_access_attribute accessibility; | |
14666 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14667 | if (attr != NULL) | |
14668 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14669 | else | |
14670 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14671 | switch (accessibility) | |
14672 | { | |
14673 | case DW_ACCESS_public: | |
14674 | /* The assumed value if neither private nor protected. */ | |
14675 | break; | |
14676 | case DW_ACCESS_private: | |
be2daae6 | 14677 | fp.is_private = 1; |
c191a687 KS |
14678 | break; |
14679 | case DW_ACCESS_protected: | |
be2daae6 | 14680 | fp.is_protected = 1; |
c191a687 KS |
14681 | break; |
14682 | default: | |
b98664d3 | 14683 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14684 | } |
14685 | ||
883fd55a | 14686 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14687 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14688 | else |
be2daae6 | 14689 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14690 | } |
14691 | ||
9c6a1327 TT |
14692 | /* A convenience typedef that's used when finding the discriminant |
14693 | field for a variant part. */ | |
1b95cdb7 SM |
14694 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14695 | offset_map_type; | |
9c6a1327 TT |
14696 | |
14697 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14698 | where the results will be stored. VARIANT is the variant to | |
14699 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14700 | or unsigned. */ | |
14701 | ||
14702 | static const gdb::array_view<discriminant_range> | |
14703 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14704 | bool is_unsigned) | |
14705 | { | |
14706 | std::vector<discriminant_range> ranges; | |
14707 | ||
14708 | if (variant.default_branch) | |
14709 | return {}; | |
14710 | ||
14711 | if (variant.discr_list_data == nullptr) | |
14712 | { | |
14713 | discriminant_range r | |
14714 | = {variant.discriminant_value, variant.discriminant_value}; | |
14715 | ranges.push_back (r); | |
14716 | } | |
14717 | else | |
14718 | { | |
14719 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14720 | variant.discr_list_data->size); | |
14721 | while (!data.empty ()) | |
14722 | { | |
14723 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14724 | { | |
14725 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14726 | break; | |
14727 | } | |
14728 | bool is_range = data[0] == DW_DSC_range; | |
14729 | data = data.slice (1); | |
14730 | ||
14731 | ULONGEST low, high; | |
14732 | unsigned int bytes_read; | |
14733 | ||
14734 | if (data.empty ()) | |
14735 | { | |
14736 | complaint (_("DW_AT_discr_list missing low value")); | |
14737 | break; | |
14738 | } | |
14739 | if (is_unsigned) | |
14740 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14741 | else | |
14742 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14743 | &bytes_read); | |
14744 | data = data.slice (bytes_read); | |
14745 | ||
14746 | if (is_range) | |
14747 | { | |
14748 | if (data.empty ()) | |
14749 | { | |
14750 | complaint (_("DW_AT_discr_list missing high value")); | |
14751 | break; | |
14752 | } | |
14753 | if (is_unsigned) | |
14754 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14755 | &bytes_read); | |
14756 | else | |
14757 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14758 | &bytes_read); | |
14759 | data = data.slice (bytes_read); | |
14760 | } | |
14761 | else | |
14762 | high = low; | |
14763 | ||
14764 | ranges.push_back ({ low, high }); | |
14765 | } | |
14766 | } | |
14767 | ||
14768 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14769 | ranges.size ()); | |
14770 | std::copy (ranges.begin (), ranges.end (), result); | |
14771 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14772 | } | |
14773 | ||
14774 | static const gdb::array_view<variant_part> create_variant_parts | |
14775 | (struct obstack *obstack, | |
14776 | const offset_map_type &offset_map, | |
14777 | struct field_info *fi, | |
14778 | const std::vector<variant_part_builder> &variant_parts); | |
14779 | ||
14780 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14781 | the variant to fill in. OBSTACK is where any needed allocations | |
14782 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14783 | fields for the type. FI describes the fields of the type we're | |
14784 | processing. FIELD is the variant field we're converting. */ | |
14785 | ||
14786 | static void | |
14787 | create_one_variant (variant &result, struct obstack *obstack, | |
14788 | const offset_map_type &offset_map, | |
14789 | struct field_info *fi, const variant_field &field) | |
14790 | { | |
14791 | result.discriminants = convert_variant_range (obstack, field, false); | |
14792 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14793 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14794 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14795 | field.variant_parts); | |
14796 | } | |
14797 | ||
14798 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14799 | is the variant part to fill in. OBSTACK is where any needed | |
14800 | allocations will be done. OFFSET_MAP holds the mapping from | |
14801 | section offsets to fields for the type. FI describes the fields of | |
14802 | the type we're processing. BUILDER is the variant part to be | |
14803 | converted. */ | |
14804 | ||
14805 | static void | |
14806 | create_one_variant_part (variant_part &result, | |
14807 | struct obstack *obstack, | |
14808 | const offset_map_type &offset_map, | |
14809 | struct field_info *fi, | |
14810 | const variant_part_builder &builder) | |
14811 | { | |
14812 | auto iter = offset_map.find (builder.discriminant_offset); | |
14813 | if (iter == offset_map.end ()) | |
14814 | { | |
14815 | result.discriminant_index = -1; | |
14816 | /* Doesn't matter. */ | |
14817 | result.is_unsigned = false; | |
14818 | } | |
14819 | else | |
14820 | { | |
14821 | result.discriminant_index = iter->second; | |
14822 | result.is_unsigned | |
14823 | = TYPE_UNSIGNED (FIELD_TYPE | |
14824 | (fi->fields[result.discriminant_index].field)); | |
14825 | } | |
14826 | ||
14827 | size_t n = builder.variants.size (); | |
14828 | variant *output = new (obstack) variant[n]; | |
14829 | for (size_t i = 0; i < n; ++i) | |
14830 | create_one_variant (output[i], obstack, offset_map, fi, | |
14831 | builder.variants[i]); | |
14832 | ||
14833 | result.variants = gdb::array_view<variant> (output, n); | |
14834 | } | |
14835 | ||
14836 | /* Create a vector of variant parts that can be attached to a type. | |
14837 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14838 | holds the mapping from section offsets to fields for the type. FI | |
14839 | describes the fields of the type we're processing. VARIANT_PARTS | |
14840 | is the vector to convert. */ | |
14841 | ||
14842 | static const gdb::array_view<variant_part> | |
14843 | create_variant_parts (struct obstack *obstack, | |
14844 | const offset_map_type &offset_map, | |
14845 | struct field_info *fi, | |
14846 | const std::vector<variant_part_builder> &variant_parts) | |
14847 | { | |
14848 | if (variant_parts.empty ()) | |
14849 | return {}; | |
14850 | ||
14851 | size_t n = variant_parts.size (); | |
14852 | variant_part *result = new (obstack) variant_part[n]; | |
14853 | for (size_t i = 0; i < n; ++i) | |
14854 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14855 | variant_parts[i]); | |
14856 | ||
14857 | return gdb::array_view<variant_part> (result, n); | |
14858 | } | |
14859 | ||
14860 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14861 | done. */ | |
14862 | ||
14863 | static void | |
14864 | add_variant_property (struct field_info *fip, struct type *type, | |
14865 | struct dwarf2_cu *cu) | |
14866 | { | |
14867 | /* Map section offsets of fields to their field index. Note the | |
14868 | field index here does not take the number of baseclasses into | |
14869 | account. */ | |
14870 | offset_map_type offset_map; | |
14871 | for (int i = 0; i < fip->fields.size (); ++i) | |
14872 | offset_map[fip->fields[i].offset] = i; | |
14873 | ||
5e22e966 | 14874 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
14875 | gdb::array_view<variant_part> parts |
14876 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14877 | fip->variant_parts); | |
14878 | ||
14879 | struct dynamic_prop prop; | |
14880 | prop.kind = PROP_VARIANT_PARTS; | |
14881 | prop.data.variant_parts | |
14882 | = ((gdb::array_view<variant_part> *) | |
14883 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14884 | ||
5c54719c | 14885 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
14886 | } |
14887 | ||
c906108c SS |
14888 | /* Create the vector of fields, and attach it to the type. */ |
14889 | ||
14890 | static void | |
fba45db2 | 14891 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14892 | struct dwarf2_cu *cu) |
c906108c | 14893 | { |
317f7127 | 14894 | int nfields = fip->nfields (); |
c906108c SS |
14895 | |
14896 | /* Record the field count, allocate space for the array of fields, | |
14897 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 14898 | type->set_num_fields (nfields); |
3cabb6b0 SM |
14899 | type->set_fields |
14900 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 14901 | |
b4ba55a1 | 14902 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14903 | { |
14904 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14905 | ||
14906 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14907 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14908 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14909 | ||
14910 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14911 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14912 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14913 | ||
774b6a14 TT |
14914 | TYPE_FIELD_IGNORE_BITS (type) = |
14915 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14916 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14917 | } |
14918 | ||
14919 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14920 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14921 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14922 | { |
be2daae6 | 14923 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14924 | unsigned char *pointer; |
c906108c SS |
14925 | |
14926 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14927 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14928 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14929 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14930 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14931 | } |
14932 | ||
9c6a1327 TT |
14933 | if (!fip->variant_parts.empty ()) |
14934 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 14935 | |
be2daae6 TT |
14936 | /* Copy the saved-up fields into the field vector. */ |
14937 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14938 | { |
be2daae6 TT |
14939 | struct nextfield &field |
14940 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14941 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14942 | |
ceacbf6e | 14943 | type->field (i) = field.field; |
be2daae6 | 14944 | switch (field.accessibility) |
c906108c | 14945 | { |
c5aa993b | 14946 | case DW_ACCESS_private: |
b4ba55a1 | 14947 | if (cu->language != language_ada) |
be2daae6 | 14948 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14949 | break; |
c906108c | 14950 | |
c5aa993b | 14951 | case DW_ACCESS_protected: |
b4ba55a1 | 14952 | if (cu->language != language_ada) |
be2daae6 | 14953 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14954 | break; |
c906108c | 14955 | |
c5aa993b JM |
14956 | case DW_ACCESS_public: |
14957 | break; | |
c906108c | 14958 | |
c5aa993b JM |
14959 | default: |
14960 | /* Unknown accessibility. Complain and treat it as public. */ | |
14961 | { | |
b98664d3 | 14962 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14963 | field.accessibility); |
c5aa993b JM |
14964 | } |
14965 | break; | |
c906108c | 14966 | } |
be2daae6 | 14967 | if (i < fip->baseclasses.size ()) |
c906108c | 14968 | { |
be2daae6 | 14969 | switch (field.virtuality) |
c906108c | 14970 | { |
c5aa993b JM |
14971 | case DW_VIRTUALITY_virtual: |
14972 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14973 | if (cu->language == language_ada) |
a73c6dcd | 14974 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14975 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14976 | break; |
c906108c SS |
14977 | } |
14978 | } | |
c906108c SS |
14979 | } |
14980 | } | |
14981 | ||
7d27a96d TT |
14982 | /* Return true if this member function is a constructor, false |
14983 | otherwise. */ | |
14984 | ||
14985 | static int | |
14986 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14987 | { | |
14988 | const char *fieldname; | |
fe978cb0 | 14989 | const char *type_name; |
7d27a96d TT |
14990 | int len; |
14991 | ||
14992 | if (die->parent == NULL) | |
14993 | return 0; | |
14994 | ||
14995 | if (die->parent->tag != DW_TAG_structure_type | |
14996 | && die->parent->tag != DW_TAG_union_type | |
14997 | && die->parent->tag != DW_TAG_class_type) | |
14998 | return 0; | |
14999 | ||
15000 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15001 | type_name = dwarf2_name (die->parent, cu); |
15002 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15003 | return 0; |
15004 | ||
15005 | len = strlen (fieldname); | |
fe978cb0 PA |
15006 | return (strncmp (fieldname, type_name, len) == 0 |
15007 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15008 | } |
15009 | ||
e35000a7 TBA |
15010 | /* Check if the given VALUE is a recognized enum |
15011 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15012 | Table 7.24. */ | |
15013 | ||
15014 | static bool | |
15015 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15016 | { | |
15017 | switch (value) | |
15018 | { | |
15019 | case DW_DEFAULTED_no: | |
15020 | case DW_DEFAULTED_in_class: | |
15021 | case DW_DEFAULTED_out_of_class: | |
15022 | return true; | |
15023 | } | |
15024 | ||
3142e908 | 15025 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15026 | return false; |
15027 | } | |
15028 | ||
c906108c SS |
15029 | /* Add a member function to the proper fieldlist. */ |
15030 | ||
15031 | static void | |
107d2387 | 15032 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15033 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15034 | { |
5e22e966 | 15035 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15036 | struct attribute *attr; |
c906108c | 15037 | int i; |
be2daae6 | 15038 | struct fnfieldlist *flp = nullptr; |
c906108c | 15039 | struct fn_field *fnp; |
15d034d0 | 15040 | const char *fieldname; |
f792889a | 15041 | struct type *this_type; |
60d5a603 | 15042 | enum dwarf_access_attribute accessibility; |
c906108c | 15043 | |
b4ba55a1 | 15044 | if (cu->language == language_ada) |
a73c6dcd | 15045 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15046 | |
2df3850c | 15047 | /* Get name of member function. */ |
39cbfefa DJ |
15048 | fieldname = dwarf2_name (die, cu); |
15049 | if (fieldname == NULL) | |
2df3850c | 15050 | return; |
c906108c | 15051 | |
c906108c | 15052 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15053 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15054 | { |
27bfe10e | 15055 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15056 | { |
15057 | flp = &fip->fnfieldlists[i]; | |
15058 | break; | |
15059 | } | |
c906108c SS |
15060 | } |
15061 | ||
be2daae6 TT |
15062 | /* Create a new fnfieldlist if necessary. */ |
15063 | if (flp == nullptr) | |
c906108c | 15064 | { |
be2daae6 TT |
15065 | fip->fnfieldlists.emplace_back (); |
15066 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15067 | flp->name = fieldname; |
be2daae6 | 15068 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15069 | } |
15070 | ||
be2daae6 TT |
15071 | /* Create a new member function field and add it to the vector of |
15072 | fnfieldlists. */ | |
15073 | flp->fnfields.emplace_back (); | |
15074 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15075 | |
15076 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15077 | if (cu->language == language_cplus) |
be2daae6 TT |
15078 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15079 | die, cu); | |
3da10d80 KS |
15080 | else |
15081 | { | |
1d06ead6 | 15082 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15083 | fnp->physname = physname ? physname : ""; |
15084 | } | |
15085 | ||
c906108c | 15086 | fnp->type = alloc_type (objfile); |
f792889a | 15087 | this_type = read_type_die (die, cu); |
78134374 | 15088 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15089 | { |
1f704f76 | 15090 | int nparams = this_type->num_fields (); |
c906108c | 15091 | |
f792889a | 15092 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15093 | of the method itself (TYPE_CODE_METHOD). */ |
15094 | smash_to_method_type (fnp->type, type, | |
f792889a | 15095 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15096 | this_type->fields (), |
1f704f76 | 15097 | this_type->num_fields (), |
f792889a | 15098 | TYPE_VARARGS (this_type)); |
c906108c SS |
15099 | |
15100 | /* Handle static member functions. | |
c5aa993b | 15101 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15102 | member functions. G++ helps GDB by marking the first |
15103 | parameter for non-static member functions (which is the this | |
15104 | pointer) as artificial. We obtain this information from | |
15105 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15106 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15107 | fnp->voffset = VOFFSET_STATIC; |
15108 | } | |
15109 | else | |
b98664d3 | 15110 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15111 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15112 | |
15113 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15114 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15115 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15116 | |
3e43a32a MS |
15117 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15118 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15119 | |
15120 | /* Get accessibility. */ | |
e142c38c | 15121 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15122 | if (attr != nullptr) |
aead7601 | 15123 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15124 | else |
15125 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15126 | switch (accessibility) | |
c906108c | 15127 | { |
60d5a603 JK |
15128 | case DW_ACCESS_private: |
15129 | fnp->is_private = 1; | |
15130 | break; | |
15131 | case DW_ACCESS_protected: | |
15132 | fnp->is_protected = 1; | |
15133 | break; | |
c906108c SS |
15134 | } |
15135 | ||
b02dede2 | 15136 | /* Check for artificial methods. */ |
e142c38c | 15137 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15138 | if (attr && DW_UNSND (attr) != 0) |
15139 | fnp->is_artificial = 1; | |
15140 | ||
e35000a7 TBA |
15141 | /* Check for defaulted methods. */ |
15142 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15143 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15144 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15145 | ||
15146 | /* Check for deleted methods. */ | |
15147 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15148 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15149 | fnp->is_deleted = 1; | |
15150 | ||
7d27a96d TT |
15151 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15152 | ||
0d564a31 | 15153 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15154 | function. For older versions of GCC, this is an offset in the |
15155 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15156 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15157 | to the object address. */ |
15158 | ||
e142c38c | 15159 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15160 | if (attr != nullptr) |
8e19ed76 | 15161 | { |
4fc6c0d5 | 15162 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15163 | { |
aec5aa8b TT |
15164 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15165 | { | |
15166 | /* Old-style GCC. */ | |
15167 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15168 | } | |
15169 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15170 | || (DW_BLOCK (attr)->size > 1 | |
15171 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15172 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15173 | { | |
aec5aa8b TT |
15174 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15175 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15176 | dwarf2_complex_location_expr_complaint (); | |
15177 | else | |
15178 | fnp->voffset /= cu->header.addr_size; | |
15179 | fnp->voffset += 2; | |
15180 | } | |
15181 | else | |
15182 | dwarf2_complex_location_expr_complaint (); | |
15183 | ||
15184 | if (!fnp->fcontext) | |
7e993ebf KS |
15185 | { |
15186 | /* If there is no `this' field and no DW_AT_containing_type, | |
15187 | we cannot actually find a base class context for the | |
15188 | vtable! */ | |
1f704f76 | 15189 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15190 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15191 | { | |
b98664d3 | 15192 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15193 | "function \"%s\" (offset %s)"), |
15194 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15195 | } |
15196 | else | |
15197 | { | |
15198 | fnp->fcontext | |
15199 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15200 | } | |
15201 | } | |
aec5aa8b | 15202 | } |
cd6c91b4 | 15203 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15204 | { |
4d3c2250 | 15205 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15206 | } |
15207 | else | |
15208 | { | |
4d3c2250 KB |
15209 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15210 | fieldname); | |
8e19ed76 | 15211 | } |
0d564a31 | 15212 | } |
d48cc9dd DJ |
15213 | else |
15214 | { | |
15215 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15216 | if (attr && DW_UNSND (attr)) | |
15217 | { | |
15218 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15219 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15220 | "but the vtable offset is not specified"), |
9d8780f0 | 15221 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15222 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15223 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15224 | } | |
15225 | } | |
c906108c SS |
15226 | } |
15227 | ||
15228 | /* Create the vector of member function fields, and attach it to the type. */ | |
15229 | ||
15230 | static void | |
fba45db2 | 15231 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15232 | struct dwarf2_cu *cu) |
c906108c | 15233 | { |
b4ba55a1 | 15234 | if (cu->language == language_ada) |
a73c6dcd | 15235 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15236 | |
c906108c SS |
15237 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15238 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15239 | TYPE_ALLOC (type, |
15240 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15241 | |
be2daae6 | 15242 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15243 | { |
be2daae6 | 15244 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15245 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15246 | |
be2daae6 TT |
15247 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15248 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15249 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15250 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15251 | ||
15252 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15253 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15254 | } |
15255 | ||
be2daae6 | 15256 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15257 | } |
15258 | ||
1168df01 JB |
15259 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15260 | language, zero otherwise. */ | |
15261 | static int | |
15262 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15263 | { | |
15264 | static const char vptr[] = "_vptr"; | |
15265 | ||
9c37b5ae TT |
15266 | /* Look for the C++ form of the vtable. */ |
15267 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15268 | return 1; |
15269 | ||
15270 | return 0; | |
15271 | } | |
15272 | ||
c0dd20ea | 15273 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15274 | functions, with the ABI-specified layout. If TYPE describes |
15275 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15276 | |
15277 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15278 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15279 | |
0b92b5bb TT |
15280 | static void |
15281 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15282 | { |
09e2d7c7 | 15283 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15284 | |
15285 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15286 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15287 | return; |
c0dd20ea DJ |
15288 | |
15289 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15290 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15291 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15292 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15293 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15294 | return; | |
c0dd20ea DJ |
15295 | |
15296 | /* Find the type of the method. */ | |
0b92b5bb | 15297 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea | 15298 | if (pfn_type == NULL |
78134374 SM |
15299 | || pfn_type->code () != TYPE_CODE_PTR |
15300 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15301 | return; |
c0dd20ea DJ |
15302 | |
15303 | /* Look for the "this" argument. */ | |
15304 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15305 | if (pfn_type->num_fields () == 0 |
0b92b5bb | 15306 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
78134374 | 15307 | || TYPE_FIELD_TYPE (pfn_type, 0)->code () != TYPE_CODE_PTR) |
0b92b5bb | 15308 | return; |
c0dd20ea | 15309 | |
09e2d7c7 | 15310 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15311 | new_type = alloc_type (objfile); |
09e2d7c7 | 15312 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15313 | pfn_type->fields (), pfn_type->num_fields (), |
c0dd20ea | 15314 | TYPE_VARARGS (pfn_type)); |
0b92b5bb | 15315 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15316 | } |
1168df01 | 15317 | |
2b4424c3 TT |
15318 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15319 | appropriate error checking and issuing complaints if there is a | |
15320 | problem. */ | |
15321 | ||
15322 | static ULONGEST | |
15323 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15324 | { | |
15325 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15326 | ||
15327 | if (attr == nullptr) | |
15328 | return 0; | |
15329 | ||
cd6c91b4 | 15330 | if (!attr->form_is_constant ()) |
2b4424c3 | 15331 | { |
b98664d3 | 15332 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15333 | " - DIE at %s [in module %s]"), |
15334 | sect_offset_str (die->sect_off), | |
5e22e966 | 15335 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15336 | return 0; |
15337 | } | |
15338 | ||
15339 | ULONGEST align; | |
15340 | if (attr->form == DW_FORM_sdata) | |
15341 | { | |
15342 | LONGEST val = DW_SND (attr); | |
15343 | if (val < 0) | |
15344 | { | |
b98664d3 | 15345 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15346 | " - DIE at %s [in module %s]"), |
15347 | sect_offset_str (die->sect_off), | |
5e22e966 | 15348 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15349 | return 0; |
15350 | } | |
15351 | align = val; | |
15352 | } | |
15353 | else | |
15354 | align = DW_UNSND (attr); | |
15355 | ||
15356 | if (align == 0) | |
15357 | { | |
b98664d3 | 15358 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15359 | " - DIE at %s [in module %s]"), |
15360 | sect_offset_str (die->sect_off), | |
5e22e966 | 15361 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15362 | return 0; |
15363 | } | |
15364 | if ((align & (align - 1)) != 0) | |
15365 | { | |
b98664d3 | 15366 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15367 | " - DIE at %s [in module %s]"), |
15368 | sect_offset_str (die->sect_off), | |
5e22e966 | 15369 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15370 | return 0; |
15371 | } | |
15372 | ||
15373 | return align; | |
15374 | } | |
15375 | ||
15376 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15377 | the alignment for TYPE. */ | |
15378 | ||
15379 | static void | |
15380 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15381 | struct type *type) | |
15382 | { | |
15383 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15384 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15385 | " - DIE at %s [in module %s]"), |
15386 | sect_offset_str (die->sect_off), | |
5e22e966 | 15387 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15388 | } |
685b1105 | 15389 | |
e35000a7 TBA |
15390 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15391 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15392 | ||
15393 | static bool | |
15394 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15395 | { | |
15396 | switch (value) | |
15397 | { | |
15398 | case DW_CC_normal: | |
15399 | case DW_CC_pass_by_reference: | |
15400 | case DW_CC_pass_by_value: | |
15401 | return true; | |
15402 | ||
15403 | default: | |
15404 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15405 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15406 | return false; |
15407 | } | |
15408 | } | |
15409 | ||
d0922fcf TBA |
15410 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15411 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15412 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15413 | ||
15414 | static bool | |
15415 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15416 | { | |
15417 | switch (value) | |
15418 | { | |
15419 | case DW_CC_normal: | |
15420 | case DW_CC_program: | |
15421 | case DW_CC_nocall: | |
15422 | return true; | |
15423 | ||
15424 | case DW_CC_GNU_renesas_sh: | |
15425 | case DW_CC_GNU_borland_fastcall_i386: | |
15426 | case DW_CC_GDB_IBM_OpenCL: | |
15427 | return true; | |
15428 | ||
15429 | default: | |
15430 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15431 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15432 | return false; |
15433 | } | |
15434 | } | |
15435 | ||
c906108c | 15436 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15437 | (definition) to create a type for the structure or union. Fill in |
15438 | the type's name and general properties; the members will not be | |
83655187 DE |
15439 | processed until process_structure_scope. A symbol table entry for |
15440 | the type will also not be done until process_structure_scope (assuming | |
15441 | the type has a name). | |
c906108c | 15442 | |
c767944b DJ |
15443 | NOTE: we need to call these functions regardless of whether or not the |
15444 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15445 | structure or union. This gets the type entered into our set of |
83655187 | 15446 | user defined types. */ |
c906108c | 15447 | |
f792889a | 15448 | static struct type * |
134d01f1 | 15449 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15450 | { |
5e22e966 | 15451 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15452 | struct type *type; |
15453 | struct attribute *attr; | |
15d034d0 | 15454 | const char *name; |
c906108c | 15455 | |
348e048f DE |
15456 | /* If the definition of this type lives in .debug_types, read that type. |
15457 | Don't follow DW_AT_specification though, that will take us back up | |
15458 | the chain and we want to go down. */ | |
052c8bb8 | 15459 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15460 | if (attr != nullptr) |
348e048f | 15461 | { |
ac9ec31b | 15462 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15463 | |
ac9ec31b | 15464 | /* The type's CU may not be the same as CU. |
02142a6c | 15465 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15466 | return set_die_type (die, type, cu); |
15467 | } | |
15468 | ||
c0dd20ea | 15469 | type = alloc_type (objfile); |
c906108c | 15470 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15471 | |
39cbfefa DJ |
15472 | name = dwarf2_name (die, cu); |
15473 | if (name != NULL) | |
c906108c | 15474 | { |
987504bb | 15475 | if (cu->language == language_cplus |
c44af4eb TT |
15476 | || cu->language == language_d |
15477 | || cu->language == language_rust) | |
63d06c5c | 15478 | { |
15d034d0 | 15479 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15480 | |
15481 | /* dwarf2_full_name might have already finished building the DIE's | |
15482 | type. If so, there is no need to continue. */ | |
15483 | if (get_die_type (die, cu) != NULL) | |
15484 | return get_die_type (die, cu); | |
15485 | ||
d0e39ea2 | 15486 | type->set_name (full_name); |
63d06c5c DC |
15487 | } |
15488 | else | |
15489 | { | |
d8151005 DJ |
15490 | /* The name is already allocated along with this objfile, so |
15491 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15492 | type->set_name (name); |
63d06c5c | 15493 | } |
c906108c SS |
15494 | } |
15495 | ||
15496 | if (die->tag == DW_TAG_structure_type) | |
15497 | { | |
67607e24 | 15498 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15499 | } |
15500 | else if (die->tag == DW_TAG_union_type) | |
15501 | { | |
67607e24 | 15502 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15503 | } |
15504 | else | |
15505 | { | |
67607e24 | 15506 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15507 | } |
15508 | ||
0cc2414c TT |
15509 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15510 | TYPE_DECLARED_CLASS (type) = 1; | |
15511 | ||
e35000a7 TBA |
15512 | /* Store the calling convention in the type if it's available in |
15513 | the die. Otherwise the calling convention remains set to | |
15514 | the default value DW_CC_normal. */ | |
15515 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15516 | if (attr != nullptr | |
15517 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15518 | { | |
15519 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15520 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15521 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15522 | } | |
15523 | ||
e142c38c | 15524 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15525 | if (attr != nullptr) |
c906108c | 15526 | { |
cd6c91b4 | 15527 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15528 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15529 | else | |
15530 | { | |
f8e89861 | 15531 | struct dynamic_prop prop; |
293e7e51 | 15532 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15533 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
15534 | TYPE_LENGTH (type) = 0; |
15535 | } | |
c906108c SS |
15536 | } |
15537 | else | |
15538 | { | |
15539 | TYPE_LENGTH (type) = 0; | |
15540 | } | |
15541 | ||
2b4424c3 TT |
15542 | maybe_set_alignment (cu, die, type); |
15543 | ||
5230b05a | 15544 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15545 | { |
5230b05a WT |
15546 | /* ICC<14 does not output the required DW_AT_declaration on |
15547 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15548 | TYPE_STUB (type) = 1; |
685b1105 JK |
15549 | } |
15550 | else | |
15551 | TYPE_STUB_SUPPORTED (type) = 1; | |
15552 | ||
dc718098 | 15553 | if (die_is_declaration (die, cu)) |
876cecd0 | 15554 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15555 | else if (attr == NULL && die->child == NULL |
15556 | && producer_is_realview (cu->producer)) | |
15557 | /* RealView does not output the required DW_AT_declaration | |
15558 | on incomplete types. */ | |
15559 | TYPE_STUB (type) = 1; | |
dc718098 | 15560 | |
c906108c SS |
15561 | /* We need to add the type field to the die immediately so we don't |
15562 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15563 | type within the structure itself. */ |
1c379e20 | 15564 | set_die_type (die, type, cu); |
c906108c | 15565 | |
7e314c57 JK |
15566 | /* set_die_type should be already done. */ |
15567 | set_descriptive_type (type, die, cu); | |
15568 | ||
c767944b DJ |
15569 | return type; |
15570 | } | |
15571 | ||
9c6a1327 TT |
15572 | static void handle_struct_member_die |
15573 | (struct die_info *child_die, | |
15574 | struct type *type, | |
15575 | struct field_info *fi, | |
15576 | std::vector<struct symbol *> *template_args, | |
15577 | struct dwarf2_cu *cu); | |
15578 | ||
15579 | /* A helper for handle_struct_member_die that handles | |
15580 | DW_TAG_variant_part. */ | |
15581 | ||
15582 | static void | |
15583 | handle_variant_part (struct die_info *die, struct type *type, | |
15584 | struct field_info *fi, | |
15585 | std::vector<struct symbol *> *template_args, | |
15586 | struct dwarf2_cu *cu) | |
15587 | { | |
15588 | variant_part_builder *new_part; | |
15589 | if (fi->current_variant_part == nullptr) | |
15590 | { | |
15591 | fi->variant_parts.emplace_back (); | |
15592 | new_part = &fi->variant_parts.back (); | |
15593 | } | |
15594 | else if (!fi->current_variant_part->processing_variant) | |
15595 | { | |
15596 | complaint (_("nested DW_TAG_variant_part seen " | |
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 | else | |
15603 | { | |
15604 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15605 | current.variant_parts.emplace_back (); | |
15606 | new_part = ¤t.variant_parts.back (); | |
15607 | } | |
15608 | ||
15609 | /* When we recurse, we want callees to add to this new variant | |
15610 | part. */ | |
15611 | scoped_restore save_current_variant_part | |
15612 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15613 | ||
15614 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15615 | if (discr == NULL) | |
15616 | { | |
15617 | /* It's a univariant form, an extension we support. */ | |
15618 | } | |
15619 | else if (discr->form_is_ref ()) | |
15620 | { | |
15621 | struct dwarf2_cu *target_cu = cu; | |
15622 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15623 | ||
15624 | new_part->discriminant_offset = target_die->sect_off; | |
15625 | } | |
15626 | else | |
15627 | { | |
15628 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15629 | " - DIE at %s [in module %s]"), | |
15630 | sect_offset_str (die->sect_off), | |
5e22e966 | 15631 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15632 | } |
15633 | ||
15634 | for (die_info *child_die = die->child; | |
15635 | child_die != NULL; | |
15636 | child_die = child_die->sibling) | |
15637 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15638 | } | |
15639 | ||
15640 | /* A helper for handle_struct_member_die that handles | |
15641 | DW_TAG_variant. */ | |
15642 | ||
15643 | static void | |
15644 | handle_variant (struct die_info *die, struct type *type, | |
15645 | struct field_info *fi, | |
15646 | std::vector<struct symbol *> *template_args, | |
15647 | struct dwarf2_cu *cu) | |
15648 | { | |
15649 | if (fi->current_variant_part == nullptr) | |
15650 | { | |
15651 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15652 | "- DIE at %s [in module %s]"), | |
15653 | sect_offset_str (die->sect_off), | |
5e22e966 | 15654 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15655 | return; |
15656 | } | |
15657 | if (fi->current_variant_part->processing_variant) | |
15658 | { | |
15659 | complaint (_("nested DW_TAG_variant seen " | |
15660 | "- DIE at %s [in module %s]"), | |
15661 | sect_offset_str (die->sect_off), | |
5e22e966 | 15662 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15663 | return; |
15664 | } | |
15665 | ||
15666 | scoped_restore save_processing_variant | |
15667 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15668 | true); | |
15669 | ||
15670 | fi->current_variant_part->variants.emplace_back (); | |
15671 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15672 | variant.first_field = fi->fields.size (); | |
15673 | ||
15674 | /* In a variant we want to get the discriminant and also add a | |
15675 | field for our sole member child. */ | |
15676 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15677 | if (discr == nullptr) | |
15678 | { | |
15679 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15680 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15681 | variant.default_branch = true; | |
15682 | else | |
15683 | variant.discr_list_data = DW_BLOCK (discr); | |
15684 | } | |
15685 | else | |
15686 | variant.discriminant_value = DW_UNSND (discr); | |
15687 | ||
15688 | for (die_info *variant_child = die->child; | |
15689 | variant_child != NULL; | |
15690 | variant_child = variant_child->sibling) | |
15691 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15692 | ||
15693 | variant.last_field = fi->fields.size (); | |
15694 | } | |
15695 | ||
2ddeaf8a TT |
15696 | /* A helper for process_structure_scope that handles a single member |
15697 | DIE. */ | |
15698 | ||
15699 | static void | |
15700 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15701 | struct field_info *fi, | |
15702 | std::vector<struct symbol *> *template_args, | |
15703 | struct dwarf2_cu *cu) | |
15704 | { | |
15705 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15706 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15707 | { |
15708 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15709 | should be a DW_TAG_member that is a declaration, but | |
15710 | all versions of G++ as of this writing (so through at | |
15711 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15712 | tags for them instead. */ | |
15713 | dwarf2_add_field (fi, child_die, cu); | |
15714 | } | |
15715 | else if (child_die->tag == DW_TAG_subprogram) | |
15716 | { | |
15717 | /* Rust doesn't have member functions in the C++ sense. | |
15718 | However, it does emit ordinary functions as children | |
15719 | of a struct DIE. */ | |
15720 | if (cu->language == language_rust) | |
15721 | read_func_scope (child_die, cu); | |
15722 | else | |
15723 | { | |
15724 | /* C++ member function. */ | |
15725 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15726 | } | |
15727 | } | |
15728 | else if (child_die->tag == DW_TAG_inheritance) | |
15729 | { | |
15730 | /* C++ base class field. */ | |
15731 | dwarf2_add_field (fi, child_die, cu); | |
15732 | } | |
15733 | else if (type_can_define_types (child_die)) | |
15734 | dwarf2_add_type_defn (fi, child_die, cu); | |
15735 | else if (child_die->tag == DW_TAG_template_type_param | |
15736 | || child_die->tag == DW_TAG_template_value_param) | |
15737 | { | |
15738 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15739 | ||
15740 | if (arg != NULL) | |
15741 | template_args->push_back (arg); | |
15742 | } | |
9c6a1327 TT |
15743 | else if (child_die->tag == DW_TAG_variant_part) |
15744 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15745 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15746 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15747 | } |
15748 | ||
c767944b DJ |
15749 | /* Finish creating a structure or union type, including filling in |
15750 | its members and creating a symbol for it. */ | |
15751 | ||
15752 | static void | |
15753 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15754 | { | |
5e22e966 | 15755 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15756 | struct die_info *child_die; |
c767944b DJ |
15757 | struct type *type; |
15758 | ||
15759 | type = get_die_type (die, cu); | |
15760 | if (type == NULL) | |
15761 | type = read_structure_type (die, cu); | |
15762 | ||
3e1d3d8c | 15763 | bool has_template_parameters = false; |
e142c38c | 15764 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15765 | { |
15766 | struct field_info fi; | |
2f4732b0 | 15767 | std::vector<struct symbol *> template_args; |
c906108c | 15768 | |
639d11d3 | 15769 | child_die = die->child; |
c906108c SS |
15770 | |
15771 | while (child_die && child_die->tag) | |
15772 | { | |
2ddeaf8a | 15773 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15774 | child_die = child_die->sibling; |
c906108c SS |
15775 | } |
15776 | ||
34eaf542 | 15777 | /* Attach template arguments to type. */ |
2f4732b0 | 15778 | if (!template_args.empty ()) |
34eaf542 | 15779 | { |
3e1d3d8c | 15780 | has_template_parameters = true; |
34eaf542 | 15781 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15782 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15783 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15784 | = XOBNEWVEC (&objfile->objfile_obstack, |
15785 | struct symbol *, | |
15786 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15787 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15788 | template_args.data (), |
34eaf542 TT |
15789 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15790 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15791 | } |
15792 | ||
c906108c | 15793 | /* Attach fields and member functions to the type. */ |
317f7127 | 15794 | if (fi.nfields () > 0) |
e7c27a73 | 15795 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15796 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15797 | { |
e7c27a73 | 15798 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15799 | |
c5aa993b | 15800 | /* Get the type which refers to the base class (possibly this |
c906108c | 15801 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15802 | class from the DW_AT_containing_type attribute. This use of |
15803 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15804 | |
e142c38c | 15805 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15806 | { |
e7c27a73 | 15807 | struct type *t = die_containing_type (die, cu); |
c906108c | 15808 | |
ae6ae975 | 15809 | set_type_vptr_basetype (type, t); |
c906108c SS |
15810 | if (type == t) |
15811 | { | |
c906108c SS |
15812 | int i; |
15813 | ||
15814 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 15815 | for (i = t->num_fields () - 1; |
c906108c SS |
15816 | i >= TYPE_N_BASECLASSES (t); |
15817 | --i) | |
15818 | { | |
0d5cff50 | 15819 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15820 | |
1168df01 | 15821 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15822 | { |
ae6ae975 | 15823 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15824 | break; |
15825 | } | |
15826 | } | |
15827 | ||
15828 | /* Complain if virtual function table field not found. */ | |
15829 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15830 | complaint (_("virtual function table pointer " |
3e43a32a | 15831 | "not found when defining class '%s'"), |
7d93a1e0 | 15832 | type->name () ? type->name () : ""); |
c906108c SS |
15833 | } |
15834 | else | |
15835 | { | |
ae6ae975 | 15836 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15837 | } |
15838 | } | |
f6235d4c | 15839 | else if (cu->producer |
61012eef | 15840 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15841 | { |
15842 | /* The IBM XLC compiler does not provide direct indication | |
15843 | of the containing type, but the vtable pointer is | |
15844 | always named __vfp. */ | |
15845 | ||
15846 | int i; | |
15847 | ||
1f704f76 | 15848 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
15849 | i >= TYPE_N_BASECLASSES (type); |
15850 | --i) | |
15851 | { | |
15852 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15853 | { | |
ae6ae975 DE |
15854 | set_type_vptr_fieldno (type, i); |
15855 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15856 | break; |
15857 | } | |
15858 | } | |
15859 | } | |
c906108c | 15860 | } |
98751a41 JK |
15861 | |
15862 | /* Copy fi.typedef_field_list linked list elements content into the | |
15863 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15864 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15865 | { |
be2daae6 | 15866 | int count = fi.typedef_field_list.size (); |
98751a41 | 15867 | |
a0d7a4ff | 15868 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15869 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15870 | = ((struct decl_field *) |
be2daae6 TT |
15871 | TYPE_ALLOC (type, |
15872 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15873 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15874 | |
be2daae6 TT |
15875 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15876 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15877 | } |
c767944b | 15878 | |
883fd55a KS |
15879 | /* Copy fi.nested_types_list linked list elements content into the |
15880 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15881 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15882 | { |
be2daae6 | 15883 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15884 | |
15885 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15886 | TYPE_NESTED_TYPES_ARRAY (type) | |
15887 | = ((struct decl_field *) | |
be2daae6 TT |
15888 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15889 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15890 | |
be2daae6 TT |
15891 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15892 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15893 | } |
c906108c | 15894 | } |
63d06c5c | 15895 | |
bb5ed363 | 15896 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15897 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15898 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15899 | |
90aeadfc DC |
15900 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15901 | snapshots) has been known to create a die giving a declaration | |
15902 | for a class that has, as a child, a die giving a definition for a | |
15903 | nested class. So we have to process our children even if the | |
15904 | current die is a declaration. Normally, of course, a declaration | |
15905 | won't have any children at all. */ | |
134d01f1 | 15906 | |
ca040673 DE |
15907 | child_die = die->child; |
15908 | ||
90aeadfc DC |
15909 | while (child_die != NULL && child_die->tag) |
15910 | { | |
15911 | if (child_die->tag == DW_TAG_member | |
15912 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15913 | || child_die->tag == DW_TAG_inheritance |
15914 | || child_die->tag == DW_TAG_template_value_param | |
15915 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15916 | { |
90aeadfc | 15917 | /* Do nothing. */ |
134d01f1 | 15918 | } |
90aeadfc DC |
15919 | else |
15920 | process_die (child_die, cu); | |
134d01f1 | 15921 | |
436c571c | 15922 | child_die = child_die->sibling; |
134d01f1 DJ |
15923 | } |
15924 | ||
fa4028e9 JB |
15925 | /* Do not consider external references. According to the DWARF standard, |
15926 | these DIEs are identified by the fact that they have no byte_size | |
15927 | attribute, and a declaration attribute. */ | |
15928 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
15929 | || !die_is_declaration (die, cu) |
15930 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
15931 | { |
15932 | struct symbol *sym = new_symbol (die, type, cu); | |
15933 | ||
15934 | if (has_template_parameters) | |
15935 | { | |
a776957c TT |
15936 | struct symtab *symtab; |
15937 | if (sym != nullptr) | |
15938 | symtab = symbol_symtab (sym); | |
15939 | else if (cu->line_header != nullptr) | |
15940 | { | |
15941 | /* Any related symtab will do. */ | |
15942 | symtab | |
7ba99d21 | 15943 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15944 | } |
15945 | else | |
15946 | { | |
15947 | symtab = nullptr; | |
15948 | complaint (_("could not find suitable " | |
15949 | "symtab for template parameter" | |
15950 | " - DIE at %s [in module %s]"), | |
15951 | sect_offset_str (die->sect_off), | |
15952 | objfile_name (objfile)); | |
15953 | } | |
15954 | ||
15955 | if (symtab != nullptr) | |
15956 | { | |
15957 | /* Make sure that the symtab is set on the new symbols. | |
15958 | Even though they don't appear in this symtab directly, | |
15959 | other parts of gdb assume that symbols do, and this is | |
15960 | reasonably true. */ | |
15961 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15962 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15963 | } | |
3e1d3d8c TT |
15964 | } |
15965 | } | |
134d01f1 DJ |
15966 | } |
15967 | ||
ed6acedd TT |
15968 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
15969 | type, update TYPE using some information only available in DIE's | |
15970 | children. In particular, the fields are computed. */ | |
55426c9d JB |
15971 | |
15972 | static void | |
15973 | update_enumeration_type_from_children (struct die_info *die, | |
15974 | struct type *type, | |
15975 | struct dwarf2_cu *cu) | |
15976 | { | |
60f7655a | 15977 | struct die_info *child_die; |
55426c9d JB |
15978 | int unsigned_enum = 1; |
15979 | int flag_enum = 1; | |
55426c9d | 15980 | |
8268c778 | 15981 | auto_obstack obstack; |
ed6acedd | 15982 | std::vector<struct field> fields; |
55426c9d | 15983 | |
60f7655a DE |
15984 | for (child_die = die->child; |
15985 | child_die != NULL && child_die->tag; | |
436c571c | 15986 | child_die = child_die->sibling) |
55426c9d JB |
15987 | { |
15988 | struct attribute *attr; | |
15989 | LONGEST value; | |
15990 | const gdb_byte *bytes; | |
15991 | struct dwarf2_locexpr_baton *baton; | |
15992 | const char *name; | |
60f7655a | 15993 | |
55426c9d JB |
15994 | if (child_die->tag != DW_TAG_enumerator) |
15995 | continue; | |
15996 | ||
15997 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15998 | if (attr == NULL) | |
15999 | continue; | |
16000 | ||
16001 | name = dwarf2_name (child_die, cu); | |
16002 | if (name == NULL) | |
16003 | name = "<anonymous enumerator>"; | |
16004 | ||
16005 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16006 | &value, &bytes, &baton); | |
16007 | if (value < 0) | |
16008 | { | |
16009 | unsigned_enum = 0; | |
16010 | flag_enum = 0; | |
16011 | } | |
55426c9d | 16012 | else |
edd45eb0 SM |
16013 | { |
16014 | if (count_one_bits_ll (value) >= 2) | |
16015 | flag_enum = 0; | |
edd45eb0 | 16016 | } |
55426c9d | 16017 | |
ed6acedd TT |
16018 | fields.emplace_back (); |
16019 | struct field &field = fields.back (); | |
16020 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16021 | SET_FIELD_ENUMVAL (field, value); | |
16022 | } | |
16023 | ||
16024 | if (!fields.empty ()) | |
16025 | { | |
5e33d5f4 | 16026 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16027 | type->set_fields |
16028 | ((struct field *) | |
16029 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16030 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16031 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16032 | } |
16033 | ||
16034 | if (unsigned_enum) | |
16035 | TYPE_UNSIGNED (type) = 1; | |
16036 | if (flag_enum) | |
16037 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16038 | } |
16039 | ||
134d01f1 DJ |
16040 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16041 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16042 | |
f792889a | 16043 | static struct type * |
134d01f1 | 16044 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16045 | { |
5e22e966 | 16046 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16047 | struct type *type; |
c906108c | 16048 | struct attribute *attr; |
0114d602 | 16049 | const char *name; |
134d01f1 | 16050 | |
348e048f DE |
16051 | /* If the definition of this type lives in .debug_types, read that type. |
16052 | Don't follow DW_AT_specification though, that will take us back up | |
16053 | the chain and we want to go down. */ | |
052c8bb8 | 16054 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16055 | if (attr != nullptr) |
348e048f | 16056 | { |
ac9ec31b | 16057 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16058 | |
ac9ec31b | 16059 | /* The type's CU may not be the same as CU. |
02142a6c | 16060 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16061 | return set_die_type (die, type, cu); |
16062 | } | |
16063 | ||
c906108c SS |
16064 | type = alloc_type (objfile); |
16065 | ||
67607e24 | 16066 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16067 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16068 | if (name != NULL) |
d0e39ea2 | 16069 | type->set_name (name); |
c906108c | 16070 | |
0626fc76 TT |
16071 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16072 | if (attr != NULL) | |
16073 | { | |
16074 | struct type *underlying_type = die_type (die, cu); | |
16075 | ||
16076 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16077 | } | |
16078 | ||
e142c38c | 16079 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16080 | if (attr != nullptr) |
c906108c SS |
16081 | { |
16082 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16083 | } | |
16084 | else | |
16085 | { | |
16086 | TYPE_LENGTH (type) = 0; | |
16087 | } | |
16088 | ||
2b4424c3 TT |
16089 | maybe_set_alignment (cu, die, type); |
16090 | ||
137033e9 JB |
16091 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16092 | declared as private in the package spec, and then defined only | |
16093 | inside the package body. Such types are known as Taft Amendment | |
16094 | Types. When another package uses such a type, an incomplete DIE | |
16095 | may be generated by the compiler. */ | |
02eb380e | 16096 | if (die_is_declaration (die, cu)) |
876cecd0 | 16097 | TYPE_STUB (type) = 1; |
02eb380e | 16098 | |
0626fc76 TT |
16099 | /* If this type has an underlying type that is not a stub, then we |
16100 | may use its attributes. We always use the "unsigned" attribute | |
16101 | in this situation, because ordinarily we guess whether the type | |
16102 | is unsigned -- but the guess can be wrong and the underlying type | |
16103 | can tell us the reality. However, we defer to a local size | |
16104 | attribute if one exists, because this lets the compiler override | |
16105 | the underlying type if needed. */ | |
16106 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16107 | { | |
9e7c9a03 HD |
16108 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16109 | underlying_type = check_typedef (underlying_type); | |
16110 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 16111 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16112 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 16113 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16114 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16115 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16116 | } |
16117 | ||
3d567982 TT |
16118 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16119 | ||
ed6acedd TT |
16120 | set_die_type (die, type, cu); |
16121 | ||
16122 | /* Finish the creation of this type by using the enum's children. | |
16123 | Note that, as usual, this must come after set_die_type to avoid | |
16124 | infinite recursion when trying to compute the names of the | |
16125 | enumerators. */ | |
16126 | update_enumeration_type_from_children (die, type, cu); | |
16127 | ||
16128 | return type; | |
134d01f1 DJ |
16129 | } |
16130 | ||
16131 | /* Given a pointer to a die which begins an enumeration, process all | |
16132 | the dies that define the members of the enumeration, and create the | |
16133 | symbol for the enumeration type. | |
16134 | ||
16135 | NOTE: We reverse the order of the element list. */ | |
16136 | ||
16137 | static void | |
16138 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16139 | { | |
f792889a | 16140 | struct type *this_type; |
134d01f1 | 16141 | |
f792889a DJ |
16142 | this_type = get_die_type (die, cu); |
16143 | if (this_type == NULL) | |
16144 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16145 | |
639d11d3 | 16146 | if (die->child != NULL) |
c906108c | 16147 | { |
9dc481d3 | 16148 | struct die_info *child_die; |
15d034d0 | 16149 | const char *name; |
9dc481d3 | 16150 | |
639d11d3 | 16151 | child_die = die->child; |
c906108c SS |
16152 | while (child_die && child_die->tag) |
16153 | { | |
16154 | if (child_die->tag != DW_TAG_enumerator) | |
16155 | { | |
e7c27a73 | 16156 | process_die (child_die, cu); |
c906108c SS |
16157 | } |
16158 | else | |
16159 | { | |
39cbfefa DJ |
16160 | name = dwarf2_name (child_die, cu); |
16161 | if (name) | |
ed6acedd | 16162 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16163 | } |
16164 | ||
436c571c | 16165 | child_die = child_die->sibling; |
c906108c | 16166 | } |
c906108c | 16167 | } |
134d01f1 | 16168 | |
6c83ed52 TT |
16169 | /* If we are reading an enum from a .debug_types unit, and the enum |
16170 | is a declaration, and the enum is not the signatured type in the | |
16171 | unit, then we do not want to add a symbol for it. Adding a | |
16172 | symbol would in some cases obscure the true definition of the | |
16173 | enum, giving users an incomplete type when the definition is | |
16174 | actually available. Note that we do not want to do this for all | |
16175 | enums which are just declarations, because C++0x allows forward | |
16176 | enum declarations. */ | |
3019eac3 | 16177 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16178 | && die_is_declaration (die, cu)) |
16179 | { | |
52dc124a | 16180 | struct signatured_type *sig_type; |
6c83ed52 | 16181 | |
c0f78cd4 | 16182 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16183 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16184 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16185 | return; |
16186 | } | |
16187 | ||
f792889a | 16188 | new_symbol (die, this_type, cu); |
c906108c SS |
16189 | } |
16190 | ||
16191 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16192 | the DIE's type field. For now, this only handles one dimensional | |
16193 | arrays. */ | |
16194 | ||
f792889a | 16195 | static struct type * |
e7c27a73 | 16196 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16197 | { |
5e22e966 | 16198 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16199 | struct die_info *child_die; |
7e314c57 | 16200 | struct type *type; |
c906108c | 16201 | struct type *element_type, *range_type, *index_type; |
c906108c | 16202 | struct attribute *attr; |
15d034d0 | 16203 | const char *name; |
a405673c | 16204 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16205 | unsigned int bit_stride = 0; |
c906108c | 16206 | |
e7c27a73 | 16207 | element_type = die_type (die, cu); |
c906108c | 16208 | |
7e314c57 JK |
16209 | /* The die_type call above may have already set the type for this DIE. */ |
16210 | type = get_die_type (die, cu); | |
16211 | if (type) | |
16212 | return type; | |
16213 | ||
dc53a7ad JB |
16214 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16215 | if (attr != NULL) | |
a405673c JB |
16216 | { |
16217 | int stride_ok; | |
293e7e51 | 16218 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16219 | |
16220 | byte_stride_prop | |
16221 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16222 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16223 | prop_type); | |
a405673c JB |
16224 | if (!stride_ok) |
16225 | { | |
b98664d3 | 16226 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16227 | " - DIE at %s [in module %s]"), |
16228 | sect_offset_str (die->sect_off), | |
5e22e966 | 16229 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16230 | /* Ignore this attribute. We will likely not be able to print |
16231 | arrays of this type correctly, but there is little we can do | |
16232 | to help if we cannot read the attribute's value. */ | |
16233 | byte_stride_prop = NULL; | |
16234 | } | |
16235 | } | |
dc53a7ad JB |
16236 | |
16237 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16238 | if (attr != NULL) | |
16239 | bit_stride = DW_UNSND (attr); | |
16240 | ||
c906108c SS |
16241 | /* Irix 6.2 native cc creates array types without children for |
16242 | arrays with unspecified length. */ | |
639d11d3 | 16243 | if (die->child == NULL) |
c906108c | 16244 | { |
46bf5051 | 16245 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16246 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16247 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16248 | byte_stride_prop, bit_stride); |
f792889a | 16249 | return set_die_type (die, type, cu); |
c906108c SS |
16250 | } |
16251 | ||
791afaa2 | 16252 | std::vector<struct type *> range_types; |
639d11d3 | 16253 | child_die = die->child; |
c906108c SS |
16254 | while (child_die && child_die->tag) |
16255 | { | |
16256 | if (child_die->tag == DW_TAG_subrange_type) | |
16257 | { | |
f792889a | 16258 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16259 | |
f792889a | 16260 | if (child_type != NULL) |
a02abb62 | 16261 | { |
0963b4bd MS |
16262 | /* The range type was succesfully read. Save it for the |
16263 | array type creation. */ | |
791afaa2 | 16264 | range_types.push_back (child_type); |
a02abb62 | 16265 | } |
c906108c | 16266 | } |
436c571c | 16267 | child_die = child_die->sibling; |
c906108c SS |
16268 | } |
16269 | ||
16270 | /* Dwarf2 dimensions are output from left to right, create the | |
16271 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16272 | |
c906108c | 16273 | type = element_type; |
7ca2d3a3 DL |
16274 | |
16275 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16276 | { | |
16277 | int i = 0; | |
9a619af0 | 16278 | |
791afaa2 | 16279 | while (i < range_types.size ()) |
dc53a7ad | 16280 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16281 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16282 | } |
16283 | else | |
16284 | { | |
791afaa2 | 16285 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16286 | while (ndim-- > 0) |
dc53a7ad | 16287 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16288 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16289 | } |
c906108c | 16290 | |
f5f8a009 EZ |
16291 | /* Understand Dwarf2 support for vector types (like they occur on |
16292 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16293 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16294 | custom vendor extension. The main difference between a regular | |
16295 | array and the vector variant is that vectors are passed by value | |
16296 | to functions. */ | |
e142c38c | 16297 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16298 | if (attr != nullptr) |
ea37ba09 | 16299 | make_vector_type (type); |
f5f8a009 | 16300 | |
dbc98a8b KW |
16301 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16302 | implementation may choose to implement triple vectors using this | |
16303 | attribute. */ | |
16304 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16305 | if (attr != nullptr) |
dbc98a8b KW |
16306 | { |
16307 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16308 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16309 | else | |
b98664d3 | 16310 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16311 | "than the total size of elements")); |
dbc98a8b KW |
16312 | } |
16313 | ||
39cbfefa DJ |
16314 | name = dwarf2_name (die, cu); |
16315 | if (name) | |
d0e39ea2 | 16316 | type->set_name (name); |
6e70227d | 16317 | |
2b4424c3 TT |
16318 | maybe_set_alignment (cu, die, type); |
16319 | ||
0963b4bd | 16320 | /* Install the type in the die. */ |
7e314c57 JK |
16321 | set_die_type (die, type, cu); |
16322 | ||
16323 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16324 | set_descriptive_type (type, die, cu); |
16325 | ||
7e314c57 | 16326 | return type; |
c906108c SS |
16327 | } |
16328 | ||
7ca2d3a3 | 16329 | static enum dwarf_array_dim_ordering |
6e70227d | 16330 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16331 | { |
16332 | struct attribute *attr; | |
16333 | ||
16334 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16335 | ||
435d3d88 | 16336 | if (attr != nullptr) |
aead7601 | 16337 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16338 | |
0963b4bd MS |
16339 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16340 | opposite order to the dwarf2 specification, but data is still | |
16341 | laid out as per normal fortran. | |
7ca2d3a3 | 16342 | |
0963b4bd MS |
16343 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16344 | version checking. */ | |
7ca2d3a3 | 16345 | |
905e0470 PM |
16346 | if (cu->language == language_fortran |
16347 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16348 | { |
16349 | return DW_ORD_row_major; | |
16350 | } | |
16351 | ||
6e70227d | 16352 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16353 | { |
16354 | case array_column_major: | |
16355 | return DW_ORD_col_major; | |
16356 | case array_row_major: | |
16357 | default: | |
16358 | return DW_ORD_row_major; | |
16359 | }; | |
16360 | } | |
16361 | ||
72019c9c | 16362 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16363 | the DIE's type field. */ |
72019c9c | 16364 | |
f792889a | 16365 | static struct type * |
72019c9c GM |
16366 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16367 | { | |
7e314c57 JK |
16368 | struct type *domain_type, *set_type; |
16369 | struct attribute *attr; | |
f792889a | 16370 | |
7e314c57 JK |
16371 | domain_type = die_type (die, cu); |
16372 | ||
16373 | /* The die_type call above may have already set the type for this DIE. */ | |
16374 | set_type = get_die_type (die, cu); | |
16375 | if (set_type) | |
16376 | return set_type; | |
16377 | ||
16378 | set_type = create_set_type (NULL, domain_type); | |
16379 | ||
16380 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16381 | if (attr != nullptr) |
d09039dd | 16382 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16383 | |
2b4424c3 TT |
16384 | maybe_set_alignment (cu, die, set_type); |
16385 | ||
f792889a | 16386 | return set_die_type (die, set_type, cu); |
72019c9c | 16387 | } |
7ca2d3a3 | 16388 | |
0971de02 TT |
16389 | /* A helper for read_common_block that creates a locexpr baton. |
16390 | SYM is the symbol which we are marking as computed. | |
16391 | COMMON_DIE is the DIE for the common block. | |
16392 | COMMON_LOC is the location expression attribute for the common | |
16393 | block itself. | |
16394 | MEMBER_LOC is the location expression attribute for the particular | |
16395 | member of the common block that we are processing. | |
16396 | CU is the CU from which the above come. */ | |
16397 | ||
16398 | static void | |
16399 | mark_common_block_symbol_computed (struct symbol *sym, | |
16400 | struct die_info *common_die, | |
16401 | struct attribute *common_loc, | |
16402 | struct attribute *member_loc, | |
16403 | struct dwarf2_cu *cu) | |
16404 | { | |
5e22e966 | 16405 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16406 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16407 | struct dwarf2_locexpr_baton *baton; |
16408 | gdb_byte *ptr; | |
16409 | unsigned int cu_off; | |
08feed99 | 16410 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16411 | LONGEST offset = 0; |
16412 | ||
16413 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16414 | gdb_assert (common_loc->form_is_block ()); |
16415 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16416 | || member_loc->form_is_constant ()); |
0971de02 | 16417 | |
8d749320 | 16418 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16419 | baton->per_objfile = per_objfile; |
0971de02 TT |
16420 | baton->per_cu = cu->per_cu; |
16421 | gdb_assert (baton->per_cu); | |
16422 | ||
16423 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16424 | ||
cd6c91b4 | 16425 | if (member_loc->form_is_constant ()) |
0971de02 | 16426 | { |
0826b30a | 16427 | offset = member_loc->constant_value (0); |
0971de02 TT |
16428 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16429 | } | |
16430 | else | |
16431 | baton->size += DW_BLOCK (member_loc)->size; | |
16432 | ||
224c3ddb | 16433 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16434 | baton->data = ptr; |
16435 | ||
16436 | *ptr++ = DW_OP_call4; | |
9c541725 | 16437 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16438 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16439 | ptr += 4; | |
16440 | ||
cd6c91b4 | 16441 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16442 | { |
16443 | *ptr++ = DW_OP_addr; | |
16444 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16445 | ptr += cu->header.addr_size; | |
16446 | } | |
16447 | else | |
16448 | { | |
16449 | /* We have to copy the data here, because DW_OP_call4 will only | |
16450 | use a DW_AT_location attribute. */ | |
16451 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16452 | ptr += DW_BLOCK (member_loc)->size; | |
16453 | } | |
16454 | ||
16455 | *ptr++ = DW_OP_plus; | |
16456 | gdb_assert (ptr - baton->data == baton->size); | |
16457 | ||
0971de02 | 16458 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16459 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16460 | } |
16461 | ||
4357ac6c TT |
16462 | /* Create appropriate locally-scoped variables for all the |
16463 | DW_TAG_common_block entries. Also create a struct common_block | |
16464 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16465 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16466 | variable names. */ |
c906108c SS |
16467 | |
16468 | static void | |
e7c27a73 | 16469 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16470 | { |
0971de02 TT |
16471 | struct attribute *attr; |
16472 | ||
16473 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16474 | if (attr != nullptr) |
0971de02 TT |
16475 | { |
16476 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16477 | if (attr->form_is_block ()) |
0971de02 TT |
16478 | { |
16479 | /* Ok. */ | |
16480 | } | |
cd6c91b4 | 16481 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16482 | { |
16483 | dwarf2_complex_location_expr_complaint (); | |
16484 | attr = NULL; | |
16485 | } | |
16486 | else | |
16487 | { | |
16488 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16489 | "common block member"); | |
16490 | attr = NULL; | |
16491 | } | |
16492 | } | |
16493 | ||
639d11d3 | 16494 | if (die->child != NULL) |
c906108c | 16495 | { |
5e22e966 | 16496 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
16497 | struct die_info *child_die; |
16498 | size_t n_entries = 0, size; | |
16499 | struct common_block *common_block; | |
16500 | struct symbol *sym; | |
74ac6d43 | 16501 | |
4357ac6c TT |
16502 | for (child_die = die->child; |
16503 | child_die && child_die->tag; | |
436c571c | 16504 | child_die = child_die->sibling) |
4357ac6c TT |
16505 | ++n_entries; |
16506 | ||
16507 | size = (sizeof (struct common_block) | |
16508 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16509 | common_block |
16510 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16511 | size); | |
4357ac6c TT |
16512 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16513 | common_block->n_entries = 0; | |
16514 | ||
16515 | for (child_die = die->child; | |
16516 | child_die && child_die->tag; | |
436c571c | 16517 | child_die = child_die->sibling) |
4357ac6c TT |
16518 | { |
16519 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16520 | symbol scope. */ | |
e7c27a73 | 16521 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16522 | if (sym != NULL) |
16523 | { | |
16524 | struct attribute *member_loc; | |
16525 | ||
16526 | common_block->contents[common_block->n_entries++] = sym; | |
16527 | ||
16528 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16529 | cu); | |
16530 | if (member_loc) | |
16531 | { | |
16532 | /* GDB has handled this for a long time, but it is | |
16533 | not specified by DWARF. It seems to have been | |
16534 | emitted by gfortran at least as recently as: | |
16535 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16536 | complaint (_("Variable in common block has " |
0971de02 | 16537 | "DW_AT_data_member_location " |
9d8780f0 SM |
16538 | "- DIE at %s [in module %s]"), |
16539 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16540 | objfile_name (objfile)); |
0971de02 | 16541 | |
cd6c91b4 | 16542 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16543 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16544 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16545 | || member_loc->form_is_block ()) |
0971de02 | 16546 | { |
435d3d88 | 16547 | if (attr != nullptr) |
0971de02 TT |
16548 | mark_common_block_symbol_computed (sym, die, attr, |
16549 | member_loc, cu); | |
16550 | } | |
16551 | else | |
16552 | dwarf2_complex_location_expr_complaint (); | |
16553 | } | |
16554 | } | |
c906108c | 16555 | } |
4357ac6c TT |
16556 | |
16557 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16558 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16559 | } |
16560 | } | |
16561 | ||
0114d602 | 16562 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16563 | |
0114d602 DJ |
16564 | static struct type * |
16565 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16566 | { |
5e22e966 | 16567 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16568 | const char *previous_prefix, *name; |
9219021c | 16569 | int is_anonymous; |
0114d602 DJ |
16570 | struct type *type; |
16571 | ||
16572 | /* For extensions, reuse the type of the original namespace. */ | |
16573 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16574 | { | |
16575 | struct die_info *ext_die; | |
16576 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16577 | |
0114d602 DJ |
16578 | ext_die = dwarf2_extension (die, &ext_cu); |
16579 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16580 | |
16581 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16582 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16583 | return set_die_type (die, type, cu); |
16584 | } | |
9219021c | 16585 | |
e142c38c | 16586 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16587 | |
16588 | /* Now build the name of the current namespace. */ | |
16589 | ||
0114d602 DJ |
16590 | previous_prefix = determine_prefix (die, cu); |
16591 | if (previous_prefix[0] != '\0') | |
16592 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16593 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16594 | |
16595 | /* Create the type. */ | |
19f392bc | 16596 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16597 | |
60531b24 | 16598 | return set_die_type (die, type, cu); |
0114d602 DJ |
16599 | } |
16600 | ||
22cee43f | 16601 | /* Read a namespace scope. */ |
0114d602 DJ |
16602 | |
16603 | static void | |
16604 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16605 | { | |
5e22e966 | 16606 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16607 | int is_anonymous; |
9219021c | 16608 | |
5c4e30ca DC |
16609 | /* Add a symbol associated to this if we haven't seen the namespace |
16610 | before. Also, add a using directive if it's an anonymous | |
16611 | namespace. */ | |
9219021c | 16612 | |
f2f0e013 | 16613 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16614 | { |
16615 | struct type *type; | |
16616 | ||
0114d602 | 16617 | type = read_type_die (die, cu); |
e7c27a73 | 16618 | new_symbol (die, type, cu); |
5c4e30ca | 16619 | |
e8e80198 | 16620 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16621 | if (is_anonymous) |
0114d602 DJ |
16622 | { |
16623 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16624 | |
eb1e02fd | 16625 | std::vector<const char *> excludes; |
804d2729 | 16626 | add_using_directive (using_directives (cu), |
7d93a1e0 | 16627 | previous_prefix, type->name (), NULL, |
eb1e02fd | 16628 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16629 | } |
5c4e30ca | 16630 | } |
9219021c | 16631 | |
639d11d3 | 16632 | if (die->child != NULL) |
d9fa45fe | 16633 | { |
639d11d3 | 16634 | struct die_info *child_die = die->child; |
6e70227d | 16635 | |
d9fa45fe DC |
16636 | while (child_die && child_die->tag) |
16637 | { | |
e7c27a73 | 16638 | process_die (child_die, cu); |
436c571c | 16639 | child_die = child_die->sibling; |
d9fa45fe DC |
16640 | } |
16641 | } | |
38d518c9 EZ |
16642 | } |
16643 | ||
f55ee35c JK |
16644 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16645 | imported module. Still we need that type as local Fortran "use ... only" | |
16646 | declaration imports depend on the created type in determine_prefix. */ | |
16647 | ||
16648 | static struct type * | |
16649 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16650 | { | |
5e22e966 | 16651 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 16652 | const char *module_name; |
f55ee35c JK |
16653 | struct type *type; |
16654 | ||
16655 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16656 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16657 | |
f55ee35c JK |
16658 | return set_die_type (die, type, cu); |
16659 | } | |
16660 | ||
5d7cb8df JK |
16661 | /* Read a Fortran module. */ |
16662 | ||
16663 | static void | |
16664 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16665 | { | |
16666 | struct die_info *child_die = die->child; | |
530e8392 KB |
16667 | struct type *type; |
16668 | ||
16669 | type = read_type_die (die, cu); | |
16670 | new_symbol (die, type, cu); | |
5d7cb8df | 16671 | |
5d7cb8df JK |
16672 | while (child_die && child_die->tag) |
16673 | { | |
16674 | process_die (child_die, cu); | |
436c571c | 16675 | child_die = child_die->sibling; |
5d7cb8df JK |
16676 | } |
16677 | } | |
16678 | ||
38d518c9 EZ |
16679 | /* Return the name of the namespace represented by DIE. Set |
16680 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16681 | namespace. */ | |
16682 | ||
16683 | static const char * | |
e142c38c | 16684 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16685 | { |
16686 | struct die_info *current_die; | |
16687 | const char *name = NULL; | |
16688 | ||
16689 | /* Loop through the extensions until we find a name. */ | |
16690 | ||
16691 | for (current_die = die; | |
16692 | current_die != NULL; | |
f2f0e013 | 16693 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16694 | { |
96553a0c DE |
16695 | /* We don't use dwarf2_name here so that we can detect the absence |
16696 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16697 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16698 | |
38d518c9 EZ |
16699 | if (name != NULL) |
16700 | break; | |
16701 | } | |
16702 | ||
16703 | /* Is it an anonymous namespace? */ | |
16704 | ||
16705 | *is_anonymous = (name == NULL); | |
16706 | if (*is_anonymous) | |
2b1dbab0 | 16707 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16708 | |
16709 | return name; | |
d9fa45fe DC |
16710 | } |
16711 | ||
c906108c SS |
16712 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16713 | the user defined type vector. */ | |
16714 | ||
f792889a | 16715 | static struct type * |
e7c27a73 | 16716 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16717 | { |
5e22e966 | 16718 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 16719 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16720 | struct type *type; |
8b2dbe47 KB |
16721 | struct attribute *attr_byte_size; |
16722 | struct attribute *attr_address_class; | |
16723 | int byte_size, addr_class; | |
7e314c57 JK |
16724 | struct type *target_type; |
16725 | ||
16726 | target_type = die_type (die, cu); | |
c906108c | 16727 | |
7e314c57 JK |
16728 | /* The die_type call above may have already set the type for this DIE. */ |
16729 | type = get_die_type (die, cu); | |
16730 | if (type) | |
16731 | return type; | |
16732 | ||
16733 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16734 | |
e142c38c | 16735 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16736 | if (attr_byte_size) |
16737 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16738 | else |
8b2dbe47 KB |
16739 | byte_size = cu_header->addr_size; |
16740 | ||
e142c38c | 16741 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16742 | if (attr_address_class) |
16743 | addr_class = DW_UNSND (attr_address_class); | |
16744 | else | |
16745 | addr_class = DW_ADDR_none; | |
16746 | ||
2b4424c3 TT |
16747 | ULONGEST alignment = get_alignment (cu, die); |
16748 | ||
16749 | /* If the pointer size, alignment, or address class is different | |
16750 | than the default, create a type variant marked as such and set | |
16751 | the length accordingly. */ | |
16752 | if (TYPE_LENGTH (type) != byte_size | |
16753 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16754 | && alignment != TYPE_RAW_ALIGN (type)) | |
16755 | || addr_class != DW_ADDR_none) | |
c906108c | 16756 | { |
5e2b427d | 16757 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16758 | { |
16759 | int type_flags; | |
16760 | ||
849957d9 | 16761 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16762 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16763 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16764 | == 0); | |
8b2dbe47 KB |
16765 | type = make_type_with_address_space (type, type_flags); |
16766 | } | |
16767 | else if (TYPE_LENGTH (type) != byte_size) | |
16768 | { | |
b98664d3 | 16769 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16770 | } |
2b4424c3 TT |
16771 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16772 | { | |
b98664d3 | 16773 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16774 | " - DIE at %s [in module %s]"), |
16775 | sect_offset_str (die->sect_off), | |
5e22e966 | 16776 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16777 | } |
6e70227d | 16778 | else |
9a619af0 MS |
16779 | { |
16780 | /* Should we also complain about unhandled address classes? */ | |
16781 | } | |
c906108c | 16782 | } |
8b2dbe47 KB |
16783 | |
16784 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16785 | set_type_align (type, alignment); |
f792889a | 16786 | return set_die_type (die, type, cu); |
c906108c SS |
16787 | } |
16788 | ||
16789 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16790 | the user defined type vector. */ | |
16791 | ||
f792889a | 16792 | static struct type * |
e7c27a73 | 16793 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16794 | { |
16795 | struct type *type; | |
16796 | struct type *to_type; | |
16797 | struct type *domain; | |
16798 | ||
e7c27a73 DJ |
16799 | to_type = die_type (die, cu); |
16800 | domain = die_containing_type (die, cu); | |
0d5de010 | 16801 | |
7e314c57 JK |
16802 | /* The calls above may have already set the type for this DIE. */ |
16803 | type = get_die_type (die, cu); | |
16804 | if (type) | |
16805 | return type; | |
16806 | ||
78134374 | 16807 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 16808 | type = lookup_methodptr_type (to_type); |
78134374 | 16809 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 16810 | { |
5e22e966 | 16811 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
16812 | |
16813 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 16814 | to_type->fields (), to_type->num_fields (), |
7078baeb TT |
16815 | TYPE_VARARGS (to_type)); |
16816 | type = lookup_methodptr_type (new_type); | |
16817 | } | |
0d5de010 DJ |
16818 | else |
16819 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16820 | |
f792889a | 16821 | return set_die_type (die, type, cu); |
c906108c SS |
16822 | } |
16823 | ||
4297a3f0 | 16824 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16825 | the user defined type vector. */ |
16826 | ||
f792889a | 16827 | static struct type * |
4297a3f0 AV |
16828 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16829 | enum type_code refcode) | |
c906108c | 16830 | { |
e7c27a73 | 16831 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16832 | struct type *type, *target_type; |
c906108c SS |
16833 | struct attribute *attr; |
16834 | ||
4297a3f0 AV |
16835 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16836 | ||
7e314c57 JK |
16837 | target_type = die_type (die, cu); |
16838 | ||
16839 | /* The die_type call above may have already set the type for this DIE. */ | |
16840 | type = get_die_type (die, cu); | |
16841 | if (type) | |
16842 | return type; | |
16843 | ||
4297a3f0 | 16844 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16845 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16846 | if (attr != nullptr) |
c906108c SS |
16847 | { |
16848 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16849 | } | |
16850 | else | |
16851 | { | |
107d2387 | 16852 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16853 | } |
2b4424c3 | 16854 | maybe_set_alignment (cu, die, type); |
f792889a | 16855 | return set_die_type (die, type, cu); |
c906108c SS |
16856 | } |
16857 | ||
cf363f18 MW |
16858 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16859 | outputs DWARF type qualifiers that apply to an array, not the | |
16860 | element type. But GDB relies on the array element type to carry | |
16861 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16862 | specification. */ | |
16863 | ||
16864 | static struct type * | |
16865 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16866 | struct type *base_type, int cnst, int voltl) | |
16867 | { | |
16868 | struct type *el_type, *inner_array; | |
16869 | ||
16870 | base_type = copy_type (base_type); | |
16871 | inner_array = base_type; | |
16872 | ||
78134374 | 16873 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16874 | { |
16875 | TYPE_TARGET_TYPE (inner_array) = | |
16876 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16877 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16878 | } | |
16879 | ||
16880 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16881 | cnst |= TYPE_CONST (el_type); | |
16882 | voltl |= TYPE_VOLATILE (el_type); | |
16883 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16884 | ||
16885 | return set_die_type (die, base_type, cu); | |
16886 | } | |
16887 | ||
f792889a | 16888 | static struct type * |
e7c27a73 | 16889 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16890 | { |
f792889a | 16891 | struct type *base_type, *cv_type; |
c906108c | 16892 | |
e7c27a73 | 16893 | base_type = die_type (die, cu); |
7e314c57 JK |
16894 | |
16895 | /* The die_type call above may have already set the type for this DIE. */ | |
16896 | cv_type = get_die_type (die, cu); | |
16897 | if (cv_type) | |
16898 | return cv_type; | |
16899 | ||
2f608a3a KW |
16900 | /* In case the const qualifier is applied to an array type, the element type |
16901 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 16902 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 16903 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16904 | |
f792889a DJ |
16905 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16906 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16907 | } |
16908 | ||
f792889a | 16909 | static struct type * |
e7c27a73 | 16910 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16911 | { |
f792889a | 16912 | struct type *base_type, *cv_type; |
c906108c | 16913 | |
e7c27a73 | 16914 | base_type = die_type (die, cu); |
7e314c57 JK |
16915 | |
16916 | /* The die_type call above may have already set the type for this DIE. */ | |
16917 | cv_type = get_die_type (die, cu); | |
16918 | if (cv_type) | |
16919 | return cv_type; | |
16920 | ||
cf363f18 MW |
16921 | /* In case the volatile qualifier is applied to an array type, the |
16922 | element type is so qualified, not the array type (section 6.7.3 | |
16923 | of C99). */ | |
78134374 | 16924 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16925 | return add_array_cv_type (die, cu, base_type, 0, 1); |
16926 | ||
f792889a DJ |
16927 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16928 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16929 | } |
16930 | ||
06d66ee9 TT |
16931 | /* Handle DW_TAG_restrict_type. */ |
16932 | ||
16933 | static struct type * | |
16934 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16935 | { | |
16936 | struct type *base_type, *cv_type; | |
16937 | ||
16938 | base_type = die_type (die, cu); | |
16939 | ||
16940 | /* The die_type call above may have already set the type for this DIE. */ | |
16941 | cv_type = get_die_type (die, cu); | |
16942 | if (cv_type) | |
16943 | return cv_type; | |
16944 | ||
16945 | cv_type = make_restrict_type (base_type); | |
16946 | return set_die_type (die, cv_type, cu); | |
16947 | } | |
16948 | ||
a2c2acaf MW |
16949 | /* Handle DW_TAG_atomic_type. */ |
16950 | ||
16951 | static struct type * | |
16952 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16953 | { | |
16954 | struct type *base_type, *cv_type; | |
16955 | ||
16956 | base_type = die_type (die, cu); | |
16957 | ||
16958 | /* The die_type call above may have already set the type for this DIE. */ | |
16959 | cv_type = get_die_type (die, cu); | |
16960 | if (cv_type) | |
16961 | return cv_type; | |
16962 | ||
16963 | cv_type = make_atomic_type (base_type); | |
16964 | return set_die_type (die, cv_type, cu); | |
16965 | } | |
16966 | ||
c906108c SS |
16967 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16968 | the user defined type vector. It isn't really a user defined type, | |
16969 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16970 | attribute to reference it. */ | |
16971 | ||
f792889a | 16972 | static struct type * |
e7c27a73 | 16973 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16974 | { |
5e22e966 | 16975 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 16976 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
16977 | struct type *type, *range_type, *index_type, *char_type; |
16978 | struct attribute *attr; | |
216a7e6b AB |
16979 | struct dynamic_prop prop; |
16980 | bool length_is_constant = true; | |
16981 | LONGEST length; | |
16982 | ||
16983 | /* There are a couple of places where bit sizes might be made use of | |
16984 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16985 | of make use of these. Handling bit sizes that are a multiple of the | |
16986 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16987 | with that problem when we have to. Warn about these attributes being | |
16988 | unsupported, then parse the type and ignore them like we always | |
16989 | have. */ | |
16990 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16991 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16992 | { | |
16993 | static bool warning_printed = false; | |
16994 | if (!warning_printed) | |
16995 | { | |
16996 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16997 | "currently supported on DW_TAG_string_type.")); | |
16998 | warning_printed = true; | |
16999 | } | |
17000 | } | |
c906108c | 17001 | |
e142c38c | 17002 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17003 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17004 | { |
17005 | /* The string length describes the location at which the length of | |
17006 | the string can be found. The size of the length field can be | |
17007 | specified with one of the attributes below. */ | |
17008 | struct type *prop_type; | |
17009 | struct attribute *len | |
17010 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17011 | if (len == nullptr) | |
17012 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17013 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17014 | { |
17015 | /* Pass 0 as the default as we know this attribute is constant | |
17016 | and the default value will not be returned. */ | |
0826b30a | 17017 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17018 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17019 | } |
17020 | else | |
17021 | { | |
17022 | /* If the size is not specified then we assume it is the size of | |
17023 | an address on this target. */ | |
293e7e51 | 17024 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17025 | } |
17026 | ||
17027 | /* Convert the attribute into a dynamic property. */ | |
17028 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17029 | length = 1; | |
17030 | else | |
17031 | length_is_constant = false; | |
17032 | } | |
17033 | else if (attr != nullptr) | |
17034 | { | |
17035 | /* This DW_AT_string_length just contains the length with no | |
17036 | indirection. There's no need to create a dynamic property in this | |
17037 | case. Pass 0 for the default value as we know it will not be | |
17038 | returned in this case. */ | |
0826b30a | 17039 | length = attr->constant_value (0); |
216a7e6b AB |
17040 | } |
17041 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17042 | { |
216a7e6b | 17043 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17044 | length = attr->constant_value (1); |
c906108c SS |
17045 | } |
17046 | else | |
17047 | { | |
216a7e6b AB |
17048 | /* Use 1 as a fallback length if we have nothing else. */ |
17049 | length = 1; | |
c906108c | 17050 | } |
6ccb9162 | 17051 | |
46bf5051 | 17052 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17053 | if (length_is_constant) |
17054 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17055 | else | |
17056 | { | |
17057 | struct dynamic_prop low_bound; | |
17058 | ||
17059 | low_bound.kind = PROP_CONST; | |
17060 | low_bound.data.const_val = 1; | |
17061 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17062 | } | |
3b7538c0 UW |
17063 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17064 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17065 | |
f792889a | 17066 | return set_die_type (die, type, cu); |
c906108c SS |
17067 | } |
17068 | ||
4d804846 JB |
17069 | /* Assuming that DIE corresponds to a function, returns nonzero |
17070 | if the function is prototyped. */ | |
17071 | ||
17072 | static int | |
17073 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17074 | { | |
17075 | struct attribute *attr; | |
17076 | ||
17077 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17078 | if (attr && (DW_UNSND (attr) != 0)) | |
17079 | return 1; | |
17080 | ||
17081 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17082 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17083 | languages that allow unprototyped functions (Eg: Objective C). |
17084 | For all other languages, assume that functions are always | |
17085 | prototyped. */ | |
17086 | if (cu->language != language_c | |
17087 | && cu->language != language_objc | |
17088 | && cu->language != language_opencl) | |
17089 | return 1; | |
17090 | ||
17091 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17092 | prototyped and unprototyped functions; default to prototyped, | |
17093 | since that is more common in modern code (and RealView warns | |
17094 | about unprototyped functions). */ | |
17095 | if (producer_is_realview (cu->producer)) | |
17096 | return 1; | |
17097 | ||
17098 | return 0; | |
17099 | } | |
17100 | ||
c906108c SS |
17101 | /* Handle DIES due to C code like: |
17102 | ||
17103 | struct foo | |
c5aa993b JM |
17104 | { |
17105 | int (*funcp)(int a, long l); | |
17106 | int b; | |
17107 | }; | |
c906108c | 17108 | |
0963b4bd | 17109 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17110 | |
f792889a | 17111 | static struct type * |
e7c27a73 | 17112 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17113 | { |
5e22e966 | 17114 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17115 | struct type *type; /* Type that this function returns. */ |
17116 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17117 | struct attribute *attr; |
17118 | ||
e7c27a73 | 17119 | type = die_type (die, cu); |
7e314c57 JK |
17120 | |
17121 | /* The die_type call above may have already set the type for this DIE. */ | |
17122 | ftype = get_die_type (die, cu); | |
17123 | if (ftype) | |
17124 | return ftype; | |
17125 | ||
0c8b41f1 | 17126 | ftype = lookup_function_type (type); |
c906108c | 17127 | |
4d804846 | 17128 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17129 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17130 | |
c055b101 CV |
17131 | /* Store the calling convention in the type if it's available in |
17132 | the subroutine die. Otherwise set the calling convention to | |
17133 | the default value DW_CC_normal. */ | |
17134 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17135 | if (attr != nullptr |
17136 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17137 | TYPE_CALLING_CONVENTION (ftype) | |
17138 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17139 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17140 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17141 | else | |
17142 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17143 | |
743649fd MW |
17144 | /* Record whether the function returns normally to its caller or not |
17145 | if the DWARF producer set that information. */ | |
17146 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17147 | if (attr && (DW_UNSND (attr) != 0)) | |
17148 | TYPE_NO_RETURN (ftype) = 1; | |
17149 | ||
76c10ea2 GM |
17150 | /* We need to add the subroutine type to the die immediately so |
17151 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17152 | declared as the same subroutine type. */ |
76c10ea2 | 17153 | set_die_type (die, ftype, cu); |
6e70227d | 17154 | |
639d11d3 | 17155 | if (die->child != NULL) |
c906108c | 17156 | { |
bb5ed363 | 17157 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17158 | struct die_info *child_die; |
8072405b | 17159 | int nparams, iparams; |
c906108c SS |
17160 | |
17161 | /* Count the number of parameters. | |
17162 | FIXME: GDB currently ignores vararg functions, but knows about | |
17163 | vararg member functions. */ | |
8072405b | 17164 | nparams = 0; |
639d11d3 | 17165 | child_die = die->child; |
c906108c SS |
17166 | while (child_die && child_die->tag) |
17167 | { | |
17168 | if (child_die->tag == DW_TAG_formal_parameter) | |
17169 | nparams++; | |
17170 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17171 | TYPE_VARARGS (ftype) = 1; |
436c571c | 17172 | child_die = child_die->sibling; |
c906108c SS |
17173 | } |
17174 | ||
17175 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17176 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17177 | ftype->set_fields |
17178 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17179 | |
8072405b JK |
17180 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17181 | even if we error out during the parameters reading below. */ | |
17182 | for (iparams = 0; iparams < nparams; iparams++) | |
17183 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17184 | ||
17185 | iparams = 0; | |
639d11d3 | 17186 | child_die = die->child; |
c906108c SS |
17187 | while (child_die && child_die->tag) |
17188 | { | |
17189 | if (child_die->tag == DW_TAG_formal_parameter) | |
17190 | { | |
3ce3b1ba PA |
17191 | struct type *arg_type; |
17192 | ||
17193 | /* DWARF version 2 has no clean way to discern C++ | |
17194 | static and non-static member functions. G++ helps | |
17195 | GDB by marking the first parameter for non-static | |
17196 | member functions (which is the this pointer) as | |
17197 | artificial. We pass this information to | |
17198 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17199 | ||
17200 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17201 | 4.5 does not yet generate. */ | |
e142c38c | 17202 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17203 | if (attr != nullptr) |
c906108c SS |
17204 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17205 | else | |
9c37b5ae | 17206 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17207 | arg_type = die_type (child_die, cu); |
17208 | ||
17209 | /* RealView does not mark THIS as const, which the testsuite | |
17210 | expects. GCC marks THIS as const in method definitions, | |
17211 | but not in the class specifications (GCC PR 43053). */ | |
17212 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17213 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17214 | { | |
17215 | int is_this = 0; | |
17216 | struct dwarf2_cu *arg_cu = cu; | |
17217 | const char *name = dwarf2_name (child_die, cu); | |
17218 | ||
17219 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17220 | if (attr != nullptr) |
3ce3b1ba PA |
17221 | { |
17222 | /* If the compiler emits this, use it. */ | |
17223 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17224 | is_this = 1; | |
17225 | } | |
17226 | else if (name && strcmp (name, "this") == 0) | |
17227 | /* Function definitions will have the argument names. */ | |
17228 | is_this = 1; | |
17229 | else if (name == NULL && iparams == 0) | |
17230 | /* Declarations may not have the names, so like | |
17231 | elsewhere in GDB, assume an artificial first | |
17232 | argument is "this". */ | |
17233 | is_this = 1; | |
17234 | ||
17235 | if (is_this) | |
17236 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17237 | arg_type, 0); | |
17238 | } | |
17239 | ||
17240 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17241 | iparams++; |
17242 | } | |
436c571c | 17243 | child_die = child_die->sibling; |
c906108c SS |
17244 | } |
17245 | } | |
17246 | ||
76c10ea2 | 17247 | return ftype; |
c906108c SS |
17248 | } |
17249 | ||
f792889a | 17250 | static struct type * |
e7c27a73 | 17251 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17252 | { |
5e22e966 | 17253 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17254 | const char *name = NULL; |
3c8e0968 | 17255 | struct type *this_type, *target_type; |
c906108c | 17256 | |
94af9270 | 17257 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17258 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17259 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17260 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17261 | target_type = die_type (die, cu); |
17262 | if (target_type != this_type) | |
17263 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17264 | else | |
17265 | { | |
17266 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17267 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17268 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17269 | "- DIE at %s [in module %s]"), |
17270 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17271 | TYPE_TARGET_TYPE (this_type) = NULL; |
17272 | } | |
e4003a34 TV |
17273 | if (name == NULL) |
17274 | { | |
17275 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17276 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17277 | Handle these by just returning the target type, rather than | |
17278 | constructing an anonymous typedef type and trying to handle this | |
17279 | elsewhere. */ | |
17280 | set_die_type (die, target_type, cu); | |
17281 | return target_type; | |
17282 | } | |
f792889a | 17283 | return this_type; |
c906108c SS |
17284 | } |
17285 | ||
9b790ce7 UW |
17286 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17287 | (which may be different from NAME) to the architecture back-end to allow | |
17288 | it to guess the correct format if necessary. */ | |
17289 | ||
17290 | static struct type * | |
17291 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17292 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17293 | { |
08feed99 | 17294 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17295 | const struct floatformat **format; |
17296 | struct type *type; | |
17297 | ||
17298 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17299 | if (format) | |
103a685e | 17300 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17301 | else |
77b7c781 | 17302 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17303 | |
17304 | return type; | |
17305 | } | |
17306 | ||
eb77c9df AB |
17307 | /* Allocate an integer type of size BITS and name NAME. */ |
17308 | ||
17309 | static struct type * | |
17310 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17311 | int bits, int unsigned_p, const char *name) | |
17312 | { | |
17313 | struct type *type; | |
17314 | ||
17315 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17316 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17317 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17318 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17319 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17320 | type = objfile_type (objfile)->builtin_void; |
17321 | else | |
17322 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17323 | ||
17324 | return type; | |
17325 | } | |
17326 | ||
8bdc1658 AB |
17327 | /* Initialise and return a floating point type of size BITS suitable for |
17328 | use as a component of a complex number. The NAME_HINT is passed through | |
17329 | when initialising the floating point type and is the name of the complex | |
17330 | type. | |
17331 | ||
17332 | As DWARF doesn't currently provide an explicit name for the components | |
17333 | of a complex number, but it can be helpful to have these components | |
17334 | named, we try to select a suitable name based on the size of the | |
17335 | component. */ | |
17336 | static struct type * | |
17337 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17338 | struct objfile *objfile, | |
103a685e TT |
17339 | int bits, const char *name_hint, |
17340 | enum bfd_endian byte_order) | |
8bdc1658 | 17341 | { |
08feed99 | 17342 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17343 | struct type *tt = nullptr; |
17344 | ||
35add35e AB |
17345 | /* Try to find a suitable floating point builtin type of size BITS. |
17346 | We're going to use the name of this type as the name for the complex | |
17347 | target type that we are about to create. */ | |
1db455a7 | 17348 | switch (cu->language) |
8bdc1658 | 17349 | { |
1db455a7 AB |
17350 | case language_fortran: |
17351 | switch (bits) | |
17352 | { | |
17353 | case 32: | |
17354 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17355 | break; | |
17356 | case 64: | |
17357 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17358 | break; | |
17359 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17360 | case 128: | |
17361 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17362 | break; | |
17363 | } | |
8bdc1658 | 17364 | break; |
1db455a7 AB |
17365 | default: |
17366 | switch (bits) | |
17367 | { | |
17368 | case 32: | |
17369 | tt = builtin_type (gdbarch)->builtin_float; | |
17370 | break; | |
17371 | case 64: | |
17372 | tt = builtin_type (gdbarch)->builtin_double; | |
17373 | break; | |
17374 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17375 | case 128: | |
17376 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17377 | break; | |
17378 | } | |
8bdc1658 AB |
17379 | break; |
17380 | } | |
17381 | ||
35add35e AB |
17382 | /* If the type we found doesn't match the size we were looking for, then |
17383 | pretend we didn't find a type at all, the complex target type we | |
17384 | create will then be nameless. */ | |
a12e5744 | 17385 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17386 | tt = nullptr; |
17387 | ||
7d93a1e0 | 17388 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17389 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17390 | } |
17391 | ||
c906108c SS |
17392 | /* Find a representation of a given base type and install |
17393 | it in the TYPE field of the die. */ | |
17394 | ||
f792889a | 17395 | static struct type * |
e7c27a73 | 17396 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17397 | { |
5e22e966 | 17398 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17399 | struct type *type; |
17400 | struct attribute *attr; | |
19f392bc | 17401 | int encoding = 0, bits = 0; |
15d034d0 | 17402 | const char *name; |
34877895 | 17403 | gdbarch *arch; |
c906108c | 17404 | |
e142c38c | 17405 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17406 | if (attr != nullptr) |
34877895 | 17407 | encoding = DW_UNSND (attr); |
e142c38c | 17408 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17409 | if (attr != nullptr) |
34877895 | 17410 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17411 | name = dwarf2_name (die, cu); |
6ccb9162 | 17412 | if (!name) |
34877895 | 17413 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17414 | |
08feed99 | 17415 | arch = objfile->arch (); |
103a685e TT |
17416 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17417 | ||
34877895 PJ |
17418 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17419 | if (attr) | |
103a685e TT |
17420 | { |
17421 | int endianity = DW_UNSND (attr); | |
17422 | ||
17423 | switch (endianity) | |
17424 | { | |
17425 | case DW_END_big: | |
17426 | byte_order = BFD_ENDIAN_BIG; | |
17427 | break; | |
17428 | case DW_END_little: | |
17429 | byte_order = BFD_ENDIAN_LITTLE; | |
17430 | break; | |
17431 | default: | |
17432 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17433 | break; | |
17434 | } | |
17435 | } | |
6ccb9162 UW |
17436 | |
17437 | switch (encoding) | |
c906108c | 17438 | { |
6ccb9162 UW |
17439 | case DW_ATE_address: |
17440 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17441 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17442 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17443 | break; |
17444 | case DW_ATE_boolean: | |
19f392bc | 17445 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17446 | break; |
17447 | case DW_ATE_complex_float: | |
103a685e TT |
17448 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17449 | byte_order); | |
78134374 | 17450 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17451 | { |
17452 | if (name == nullptr) | |
17453 | { | |
17454 | struct obstack *obstack | |
5e22e966 | 17455 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17456 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17457 | nullptr); |
17458 | } | |
17459 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17460 | } | |
17461 | else | |
17462 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17463 | break; |
17464 | case DW_ATE_decimal_float: | |
19f392bc | 17465 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17466 | break; |
17467 | case DW_ATE_float: | |
103a685e | 17468 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17469 | break; |
17470 | case DW_ATE_signed: | |
eb77c9df | 17471 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17472 | break; |
17473 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17474 | if (cu->language == language_fortran |
17475 | && name | |
61012eef | 17476 | && startswith (name, "character(")) |
19f392bc UW |
17477 | type = init_character_type (objfile, bits, 1, name); |
17478 | else | |
eb77c9df | 17479 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17480 | break; |
17481 | case DW_ATE_signed_char: | |
6e70227d | 17482 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17483 | || cu->language == language_pascal |
17484 | || cu->language == language_fortran) | |
19f392bc UW |
17485 | type = init_character_type (objfile, bits, 0, name); |
17486 | else | |
eb77c9df | 17487 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17488 | break; |
17489 | case DW_ATE_unsigned_char: | |
868a0084 | 17490 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17491 | || cu->language == language_pascal |
c44af4eb TT |
17492 | || cu->language == language_fortran |
17493 | || cu->language == language_rust) | |
19f392bc UW |
17494 | type = init_character_type (objfile, bits, 1, name); |
17495 | else | |
eb77c9df | 17496 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17497 | break; |
75079b2b | 17498 | case DW_ATE_UTF: |
53e710ac | 17499 | { |
53e710ac PA |
17500 | if (bits == 16) |
17501 | type = builtin_type (arch)->builtin_char16; | |
17502 | else if (bits == 32) | |
17503 | type = builtin_type (arch)->builtin_char32; | |
17504 | else | |
17505 | { | |
b98664d3 | 17506 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17507 | bits); |
eb77c9df | 17508 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17509 | } |
17510 | return set_die_type (die, type, cu); | |
17511 | } | |
75079b2b TT |
17512 | break; |
17513 | ||
6ccb9162 | 17514 | default: |
b98664d3 | 17515 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17516 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17517 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17518 | break; |
c906108c | 17519 | } |
6ccb9162 | 17520 | |
0114d602 | 17521 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17522 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17523 | |
2b4424c3 TT |
17524 | maybe_set_alignment (cu, die, type); |
17525 | ||
103a685e | 17526 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17527 | |
f792889a | 17528 | return set_die_type (die, type, cu); |
c906108c SS |
17529 | } |
17530 | ||
80180f79 SA |
17531 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17532 | resulting value of the attribute into struct bound_prop. | |
17533 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17534 | ||
17535 | static int | |
17536 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17537 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17538 | struct type *default_type) | |
80180f79 SA |
17539 | { |
17540 | struct dwarf2_property_baton *baton; | |
5e22e966 | 17541 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
17542 | struct objfile *objfile = per_objfile->objfile; |
17543 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 17544 | |
9a49df9d AB |
17545 | gdb_assert (default_type != NULL); |
17546 | ||
80180f79 SA |
17547 | if (attr == NULL || prop == NULL) |
17548 | return 0; | |
17549 | ||
4fc6c0d5 | 17550 | if (attr->form_is_block ()) |
80180f79 | 17551 | { |
8d749320 | 17552 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17553 | baton->property_type = default_type; |
80180f79 | 17554 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17555 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
17556 | baton->locexpr.size = DW_BLOCK (attr)->size; |
17557 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17558 | switch (attr->name) |
17559 | { | |
17560 | case DW_AT_string_length: | |
17561 | baton->locexpr.is_reference = true; | |
17562 | break; | |
17563 | default: | |
17564 | baton->locexpr.is_reference = false; | |
17565 | break; | |
17566 | } | |
80180f79 SA |
17567 | prop->data.baton = baton; |
17568 | prop->kind = PROP_LOCEXPR; | |
17569 | gdb_assert (prop->data.baton != NULL); | |
17570 | } | |
cd6c91b4 | 17571 | else if (attr->form_is_ref ()) |
80180f79 SA |
17572 | { |
17573 | struct dwarf2_cu *target_cu = cu; | |
17574 | struct die_info *target_die; | |
17575 | struct attribute *target_attr; | |
17576 | ||
17577 | target_die = follow_die_ref (die, attr, &target_cu); | |
17578 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17579 | if (target_attr == NULL) |
17580 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17581 | target_cu); | |
80180f79 SA |
17582 | if (target_attr == NULL) |
17583 | return 0; | |
17584 | ||
df25ebbd | 17585 | switch (target_attr->name) |
80180f79 | 17586 | { |
df25ebbd | 17587 | case DW_AT_location: |
cd6c91b4 | 17588 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17589 | { |
8d749320 | 17590 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17591 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17592 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17593 | prop->data.baton = baton; | |
17594 | prop->kind = PROP_LOCLIST; | |
17595 | gdb_assert (prop->data.baton != NULL); | |
17596 | } | |
4fc6c0d5 | 17597 | else if (target_attr->form_is_block ()) |
df25ebbd | 17598 | { |
8d749320 | 17599 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17600 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 17601 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17602 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
17603 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
17604 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17605 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17606 | prop->data.baton = baton; |
17607 | prop->kind = PROP_LOCEXPR; | |
17608 | gdb_assert (prop->data.baton != NULL); | |
17609 | } | |
17610 | else | |
17611 | { | |
17612 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17613 | "dynamic property"); | |
17614 | return 0; | |
17615 | } | |
17616 | break; | |
17617 | case DW_AT_data_member_location: | |
17618 | { | |
17619 | LONGEST offset; | |
17620 | ||
17621 | if (!handle_data_member_location (target_die, target_cu, | |
17622 | &offset)) | |
17623 | return 0; | |
17624 | ||
8d749320 | 17625 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17626 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17627 | target_cu); |
df25ebbd JB |
17628 | baton->offset_info.offset = offset; |
17629 | baton->offset_info.type = die_type (target_die, target_cu); | |
17630 | prop->data.baton = baton; | |
17631 | prop->kind = PROP_ADDR_OFFSET; | |
17632 | break; | |
17633 | } | |
80180f79 SA |
17634 | } |
17635 | } | |
cd6c91b4 | 17636 | else if (attr->form_is_constant ()) |
80180f79 | 17637 | { |
0826b30a | 17638 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17639 | prop->kind = PROP_CONST; |
17640 | } | |
17641 | else | |
17642 | { | |
17643 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17644 | dwarf2_name (die, cu)); | |
17645 | return 0; | |
17646 | } | |
17647 | ||
17648 | return 1; | |
17649 | } | |
17650 | ||
09ba997f | 17651 | /* See read.h. */ |
9a49df9d | 17652 | |
09ba997f | 17653 | struct type * |
293e7e51 | 17654 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 17655 | { |
9a49df9d AB |
17656 | struct type *int_type; |
17657 | ||
17658 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17659 | #define TRY_TYPE(F) \ |
17660 | int_type = (unsigned_p \ | |
17661 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17662 | : objfile_type (objfile)->builtin_ ## F); \ | |
17663 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17664 | return int_type |
17665 | ||
17666 | TRY_TYPE (char); | |
17667 | TRY_TYPE (short); | |
17668 | TRY_TYPE (int); | |
17669 | TRY_TYPE (long); | |
17670 | TRY_TYPE (long_long); | |
17671 | ||
17672 | #undef TRY_TYPE | |
17673 | ||
17674 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17675 | } | |
17676 | ||
09ba997f | 17677 | /* See read.h. */ |
11a8b164 | 17678 | |
09ba997f | 17679 | struct type * |
293e7e51 | 17680 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 17681 | { |
293e7e51 SM |
17682 | int addr_size = this->per_cu->addr_size (); |
17683 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17684 | } |
17685 | ||
b86352cf AB |
17686 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17687 | present (which is valid) then compute the default type based on the | |
17688 | compilation units address size. */ | |
17689 | ||
17690 | static struct type * | |
17691 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17692 | { | |
17693 | struct type *index_type = die_type (die, cu); | |
17694 | ||
17695 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17696 | without specifying a base type. | |
17697 | In that case, the base type must be set to the type of | |
17698 | the lower bound, upper bound or count, in that order, if any of these | |
17699 | three attributes references an object that has a type. | |
17700 | If no base type is found, the Dwarf-2 specifications say that | |
17701 | a signed integer type of size equal to the size of an address should | |
17702 | be used. | |
17703 | For the following C code: `extern char gdb_int [];' | |
17704 | GCC produces an empty range DIE. | |
17705 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17706 | high bound or count are not yet handled by this code. */ | |
78134374 | 17707 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 17708 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
17709 | |
17710 | return index_type; | |
17711 | } | |
17712 | ||
a02abb62 JB |
17713 | /* Read the given DW_AT_subrange DIE. */ |
17714 | ||
f792889a | 17715 | static struct type * |
a02abb62 JB |
17716 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17717 | { | |
4c9ad8c2 | 17718 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17719 | struct type *range_type; |
17720 | struct attribute *attr; | |
729efb13 | 17721 | struct dynamic_prop low, high; |
4fae6e18 | 17722 | int low_default_is_valid; |
c451ebe5 | 17723 | int high_bound_is_count = 0; |
15d034d0 | 17724 | const char *name; |
d359392f | 17725 | ULONGEST negative_mask; |
e77813c8 | 17726 | |
b86352cf AB |
17727 | orig_base_type = read_subrange_index_type (die, cu); |
17728 | ||
4c9ad8c2 TT |
17729 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17730 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17731 | creating the range type, but we use the result of check_typedef | |
17732 | when examining properties of the type. */ | |
17733 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17734 | |
7e314c57 JK |
17735 | /* The die_type call above may have already set the type for this DIE. */ |
17736 | range_type = get_die_type (die, cu); | |
17737 | if (range_type) | |
17738 | return range_type; | |
17739 | ||
729efb13 SA |
17740 | low.kind = PROP_CONST; |
17741 | high.kind = PROP_CONST; | |
17742 | high.data.const_val = 0; | |
17743 | ||
4fae6e18 JK |
17744 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17745 | omitting DW_AT_lower_bound. */ | |
17746 | switch (cu->language) | |
6e70227d | 17747 | { |
4fae6e18 JK |
17748 | case language_c: |
17749 | case language_cplus: | |
729efb13 | 17750 | low.data.const_val = 0; |
4fae6e18 JK |
17751 | low_default_is_valid = 1; |
17752 | break; | |
17753 | case language_fortran: | |
729efb13 | 17754 | low.data.const_val = 1; |
4fae6e18 JK |
17755 | low_default_is_valid = 1; |
17756 | break; | |
17757 | case language_d: | |
4fae6e18 | 17758 | case language_objc: |
c44af4eb | 17759 | case language_rust: |
729efb13 | 17760 | low.data.const_val = 0; |
4fae6e18 JK |
17761 | low_default_is_valid = (cu->header.version >= 4); |
17762 | break; | |
17763 | case language_ada: | |
17764 | case language_m2: | |
17765 | case language_pascal: | |
729efb13 | 17766 | low.data.const_val = 1; |
4fae6e18 JK |
17767 | low_default_is_valid = (cu->header.version >= 4); |
17768 | break; | |
17769 | default: | |
729efb13 | 17770 | low.data.const_val = 0; |
4fae6e18 JK |
17771 | low_default_is_valid = 0; |
17772 | break; | |
a02abb62 JB |
17773 | } |
17774 | ||
e142c38c | 17775 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17776 | if (attr != nullptr) |
9a49df9d | 17777 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17778 | else if (!low_default_is_valid) |
b98664d3 | 17779 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17780 | "- DIE at %s [in module %s]"), |
17781 | sect_offset_str (die->sect_off), | |
5e22e966 | 17782 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 17783 | |
506f5c41 TV |
17784 | struct attribute *attr_ub, *attr_count; |
17785 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17786 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17787 | { |
506f5c41 | 17788 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17789 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17790 | { |
c451ebe5 SA |
17791 | /* If bounds are constant do the final calculation here. */ |
17792 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17793 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17794 | else | |
17795 | high_bound_is_count = 1; | |
c2ff108b | 17796 | } |
506f5c41 TV |
17797 | else |
17798 | { | |
17799 | if (attr_ub != NULL) | |
17800 | complaint (_("Unresolved DW_AT_upper_bound " | |
17801 | "- DIE at %s [in module %s]"), | |
17802 | sect_offset_str (die->sect_off), | |
5e22e966 | 17803 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
17804 | if (attr_count != NULL) |
17805 | complaint (_("Unresolved DW_AT_count " | |
17806 | "- DIE at %s [in module %s]"), | |
17807 | sect_offset_str (die->sect_off), | |
5e22e966 | 17808 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 17809 | } |
e77813c8 | 17810 | } |
a02abb62 | 17811 | |
4e962e74 TT |
17812 | LONGEST bias = 0; |
17813 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17814 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17815 | bias = bias_attr->constant_value (0); |
4e962e74 | 17816 | |
dbb9c2b1 JB |
17817 | /* Normally, the DWARF producers are expected to use a signed |
17818 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17819 | But this is unfortunately not always the case, as witnessed | |
17820 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17821 | is used instead. To work around that ambiguity, we treat | |
17822 | the bounds as signed, and thus sign-extend their values, when | |
17823 | the base type is signed. */ | |
6e70227d | 17824 | negative_mask = |
d359392f | 17825 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17826 | if (low.kind == PROP_CONST |
17827 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17828 | low.data.const_val |= negative_mask; | |
17829 | if (high.kind == PROP_CONST | |
17830 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17831 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17832 | |
5bbd8269 AB |
17833 | /* Check for bit and byte strides. */ |
17834 | struct dynamic_prop byte_stride_prop; | |
17835 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17836 | if (attr_byte_stride != nullptr) | |
17837 | { | |
293e7e51 | 17838 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17839 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17840 | prop_type); | |
17841 | } | |
17842 | ||
17843 | struct dynamic_prop bit_stride_prop; | |
17844 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17845 | if (attr_bit_stride != nullptr) | |
17846 | { | |
17847 | /* It only makes sense to have either a bit or byte stride. */ | |
17848 | if (attr_byte_stride != nullptr) | |
17849 | { | |
17850 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17851 | "- DIE at %s [in module %s]"), | |
17852 | sect_offset_str (die->sect_off), | |
5e22e966 | 17853 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
17854 | attr_bit_stride = nullptr; |
17855 | } | |
17856 | else | |
17857 | { | |
293e7e51 | 17858 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17859 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17860 | prop_type); | |
17861 | } | |
17862 | } | |
17863 | ||
17864 | if (attr_byte_stride != nullptr | |
17865 | || attr_bit_stride != nullptr) | |
17866 | { | |
17867 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17868 | struct dynamic_prop *stride | |
17869 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17870 | ||
17871 | range_type | |
17872 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17873 | &high, bias, stride, byte_stride_p); | |
17874 | } | |
17875 | else | |
17876 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17877 | |
c451ebe5 SA |
17878 | if (high_bound_is_count) |
17879 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17880 | ||
c2ff108b JK |
17881 | /* Ada expects an empty array on no boundary attributes. */ |
17882 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17883 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17884 | |
39cbfefa DJ |
17885 | name = dwarf2_name (die, cu); |
17886 | if (name) | |
d0e39ea2 | 17887 | range_type->set_name (name); |
6e70227d | 17888 | |
e142c38c | 17889 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17890 | if (attr != nullptr) |
a02abb62 JB |
17891 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17892 | ||
2b4424c3 TT |
17893 | maybe_set_alignment (cu, die, range_type); |
17894 | ||
7e314c57 JK |
17895 | set_die_type (die, range_type, cu); |
17896 | ||
17897 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17898 | set_descriptive_type (range_type, die, cu); |
17899 | ||
7e314c57 | 17900 | return range_type; |
a02abb62 | 17901 | } |
6e70227d | 17902 | |
f792889a | 17903 | static struct type * |
81a17f79 JB |
17904 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17905 | { | |
17906 | struct type *type; | |
81a17f79 | 17907 | |
5e22e966 | 17908 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 17909 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 17910 | |
74a2f8ff | 17911 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17912 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17913 | such a type, we treat it as a stub, and try to resolve it later on, |
17914 | when needed. */ | |
17915 | if (cu->language == language_ada) | |
17916 | TYPE_STUB (type) = 1; | |
17917 | ||
f792889a | 17918 | return set_die_type (die, type, cu); |
81a17f79 | 17919 | } |
a02abb62 | 17920 | |
639d11d3 DC |
17921 | /* Read a single die and all its descendents. Set the die's sibling |
17922 | field to NULL; set other fields in the die correctly, and set all | |
17923 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17924 | location of the info_ptr after reading all of those dies. PARENT | |
17925 | is the parent of the die in question. */ | |
17926 | ||
17927 | static struct die_info * | |
dee91e82 | 17928 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17929 | const gdb_byte *info_ptr, |
17930 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17931 | struct die_info *parent) |
639d11d3 DC |
17932 | { |
17933 | struct die_info *die; | |
d521ce57 | 17934 | const gdb_byte *cur_ptr; |
639d11d3 | 17935 | |
3e225074 | 17936 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17937 | if (die == NULL) |
17938 | { | |
17939 | *new_info_ptr = cur_ptr; | |
17940 | return NULL; | |
17941 | } | |
93311388 | 17942 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17943 | |
3e225074 | 17944 | if (die->has_children) |
bf6af496 | 17945 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17946 | else |
17947 | { | |
17948 | die->child = NULL; | |
17949 | *new_info_ptr = cur_ptr; | |
17950 | } | |
17951 | ||
17952 | die->sibling = NULL; | |
17953 | die->parent = parent; | |
17954 | return die; | |
17955 | } | |
17956 | ||
17957 | /* Read a die, all of its descendents, and all of its siblings; set | |
17958 | all of the fields of all of the dies correctly. Arguments are as | |
17959 | in read_die_and_children. */ | |
17960 | ||
17961 | static struct die_info * | |
bf6af496 | 17962 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17963 | const gdb_byte *info_ptr, |
17964 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17965 | struct die_info *parent) |
639d11d3 DC |
17966 | { |
17967 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17968 | const gdb_byte *cur_ptr; |
639d11d3 | 17969 | |
c906108c | 17970 | cur_ptr = info_ptr; |
639d11d3 DC |
17971 | first_die = last_sibling = NULL; |
17972 | ||
17973 | while (1) | |
c906108c | 17974 | { |
639d11d3 | 17975 | struct die_info *die |
dee91e82 | 17976 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17977 | |
1d325ec1 | 17978 | if (die == NULL) |
c906108c | 17979 | { |
639d11d3 DC |
17980 | *new_info_ptr = cur_ptr; |
17981 | return first_die; | |
c906108c | 17982 | } |
1d325ec1 DJ |
17983 | |
17984 | if (!first_die) | |
17985 | first_die = die; | |
c906108c | 17986 | else |
1d325ec1 DJ |
17987 | last_sibling->sibling = die; |
17988 | ||
17989 | last_sibling = die; | |
c906108c | 17990 | } |
c906108c SS |
17991 | } |
17992 | ||
bf6af496 DE |
17993 | /* Read a die, all of its descendents, and all of its siblings; set |
17994 | all of the fields of all of the dies correctly. Arguments are as | |
17995 | in read_die_and_children. | |
17996 | This the main entry point for reading a DIE and all its children. */ | |
17997 | ||
17998 | static struct die_info * | |
17999 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18000 | const gdb_byte *info_ptr, |
18001 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18002 | struct die_info *parent) |
18003 | { | |
18004 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18005 | new_info_ptr, parent); | |
18006 | ||
b4f54984 | 18007 | if (dwarf_die_debug) |
bf6af496 DE |
18008 | { |
18009 | fprintf_unfiltered (gdb_stdlog, | |
18010 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18011 | reader->die_section->get_name (), |
bf6af496 DE |
18012 | (unsigned) (info_ptr - reader->die_section->buffer), |
18013 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18014 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18015 | } |
18016 | ||
18017 | return die; | |
18018 | } | |
18019 | ||
3019eac3 DE |
18020 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18021 | attributes. | |
18022 | The caller is responsible for filling in the extra attributes | |
18023 | and updating (*DIEP)->num_attrs. | |
18024 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18025 | except for its child, sibling, and parent fields. */ |
93311388 | 18026 | |
d521ce57 | 18027 | static const gdb_byte * |
3019eac3 | 18028 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18029 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18030 | int num_extra_attrs) |
93311388 | 18031 | { |
b64f50a1 | 18032 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18033 | struct abbrev_info *abbrev; |
18034 | struct die_info *die; | |
18035 | struct dwarf2_cu *cu = reader->cu; | |
18036 | bfd *abfd = reader->abfd; | |
18037 | ||
9c541725 | 18038 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18039 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18040 | info_ptr += bytes_read; | |
18041 | if (!abbrev_number) | |
18042 | { | |
18043 | *diep = NULL; | |
93311388 DE |
18044 | return info_ptr; |
18045 | } | |
18046 | ||
685af9cd | 18047 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18048 | if (!abbrev) |
348e048f DE |
18049 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18050 | abbrev_number, | |
18051 | bfd_get_filename (abfd)); | |
18052 | ||
3019eac3 | 18053 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18054 | die->sect_off = sect_off; |
93311388 DE |
18055 | die->tag = abbrev->tag; |
18056 | die->abbrev = abbrev_number; | |
3e225074 | 18057 | die->has_children = abbrev->has_children; |
93311388 | 18058 | |
3019eac3 DE |
18059 | /* Make the result usable. |
18060 | The caller needs to update num_attrs after adding the extra | |
18061 | attributes. */ | |
93311388 DE |
18062 | die->num_attrs = abbrev->num_attrs; |
18063 | ||
18a8505e | 18064 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18065 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18066 | { |
18067 | bool need_reprocess; | |
18068 | info_ptr = | |
18069 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18070 | info_ptr, &need_reprocess); | |
18071 | if (need_reprocess) | |
18072 | indexes_that_need_reprocess.push_back (i); | |
18073 | } | |
18074 | ||
052c8bb8 | 18075 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18076 | if (attr != nullptr) |
18077 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18078 | |
41144253 | 18079 | attr = die->attr (DW_AT_loclists_base); |
18080 | if (attr != nullptr) | |
18081 | cu->loclist_base = DW_UNSND (attr); | |
18082 | ||
a39fdb41 | 18083 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18084 | if (maybe_addr_base.has_value ()) |
18085 | cu->addr_base = *maybe_addr_base; | |
18086 | for (int index : indexes_that_need_reprocess) | |
18087 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18088 | *diep = die; |
93311388 DE |
18089 | return info_ptr; |
18090 | } | |
18091 | ||
3019eac3 DE |
18092 | /* Read a die and all its attributes. |
18093 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18094 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18095 | |
d521ce57 | 18096 | static const gdb_byte * |
3019eac3 | 18097 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18098 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18099 | { |
d521ce57 | 18100 | const gdb_byte *result; |
bf6af496 | 18101 | |
3e225074 | 18102 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18103 | |
b4f54984 | 18104 | if (dwarf_die_debug) |
bf6af496 DE |
18105 | { |
18106 | fprintf_unfiltered (gdb_stdlog, | |
18107 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18108 | reader->die_section->get_name (), |
bf6af496 DE |
18109 | (unsigned) (info_ptr - reader->die_section->buffer), |
18110 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18111 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18112 | } |
18113 | ||
18114 | return result; | |
3019eac3 | 18115 | } |
433df2d4 | 18116 | \f |
c906108c | 18117 | |
72bf9492 DJ |
18118 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18119 | symbol for. */ | |
18120 | ||
18121 | static int | |
18122 | is_type_tag_for_partial (int tag) | |
18123 | { | |
18124 | switch (tag) | |
18125 | { | |
18126 | #if 0 | |
18127 | /* Some types that would be reasonable to generate partial symbols for, | |
18128 | that we don't at present. */ | |
18129 | case DW_TAG_array_type: | |
18130 | case DW_TAG_file_type: | |
18131 | case DW_TAG_ptr_to_member_type: | |
18132 | case DW_TAG_set_type: | |
18133 | case DW_TAG_string_type: | |
18134 | case DW_TAG_subroutine_type: | |
18135 | #endif | |
18136 | case DW_TAG_base_type: | |
18137 | case DW_TAG_class_type: | |
680b30c7 | 18138 | case DW_TAG_interface_type: |
72bf9492 DJ |
18139 | case DW_TAG_enumeration_type: |
18140 | case DW_TAG_structure_type: | |
18141 | case DW_TAG_subrange_type: | |
18142 | case DW_TAG_typedef: | |
18143 | case DW_TAG_union_type: | |
18144 | return 1; | |
18145 | default: | |
18146 | return 0; | |
18147 | } | |
18148 | } | |
18149 | ||
18150 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18151 | ||
18152 | static struct partial_die_info * | |
dee91e82 | 18153 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18154 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18155 | { |
dee91e82 | 18156 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18157 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18158 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18159 | unsigned int bytes_read; |
5afb4e99 | 18160 | unsigned int load_all = 0; |
72bf9492 DJ |
18161 | int nesting_level = 1; |
18162 | ||
18163 | parent_die = NULL; | |
18164 | last_die = NULL; | |
18165 | ||
7adf1e79 DE |
18166 | gdb_assert (cu->per_cu != NULL); |
18167 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18168 | load_all = 1; |
18169 | ||
72bf9492 DJ |
18170 | cu->partial_dies |
18171 | = htab_create_alloc_ex (cu->header.length / 12, | |
18172 | partial_die_hash, | |
18173 | partial_die_eq, | |
18174 | NULL, | |
18175 | &cu->comp_unit_obstack, | |
18176 | hashtab_obstack_allocate, | |
18177 | dummy_obstack_deallocate); | |
18178 | ||
72bf9492 DJ |
18179 | while (1) |
18180 | { | |
685af9cd | 18181 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18182 | |
18183 | /* A NULL abbrev means the end of a series of children. */ | |
18184 | if (abbrev == NULL) | |
18185 | { | |
18186 | if (--nesting_level == 0) | |
cd9983dd YQ |
18187 | return first_die; |
18188 | ||
72bf9492 DJ |
18189 | info_ptr += bytes_read; |
18190 | last_die = parent_die; | |
18191 | parent_die = parent_die->die_parent; | |
18192 | continue; | |
18193 | } | |
18194 | ||
98bfdba5 PA |
18195 | /* Check for template arguments. We never save these; if |
18196 | they're seen, we just mark the parent, and go on our way. */ | |
18197 | if (parent_die != NULL | |
18198 | && cu->language == language_cplus | |
18199 | && (abbrev->tag == DW_TAG_template_type_param | |
18200 | || abbrev->tag == DW_TAG_template_value_param)) | |
18201 | { | |
18202 | parent_die->has_template_arguments = 1; | |
18203 | ||
18204 | if (!load_all) | |
18205 | { | |
18206 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18207 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18208 | continue; |
18209 | } | |
18210 | } | |
18211 | ||
0d99eb77 | 18212 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18213 | Skip their other children. */ |
18214 | if (!load_all | |
18215 | && cu->language == language_cplus | |
18216 | && parent_die != NULL | |
18217 | && parent_die->tag == DW_TAG_subprogram) | |
18218 | { | |
dee91e82 | 18219 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18220 | continue; |
18221 | } | |
18222 | ||
5afb4e99 DJ |
18223 | /* Check whether this DIE is interesting enough to save. Normally |
18224 | we would not be interested in members here, but there may be | |
18225 | later variables referencing them via DW_AT_specification (for | |
18226 | static members). */ | |
18227 | if (!load_all | |
18228 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18229 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18230 | && abbrev->tag != DW_TAG_enumerator |
18231 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18232 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18233 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18234 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18235 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18236 | && abbrev->tag != DW_TAG_module |
95554aad | 18237 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18238 | && abbrev->tag != DW_TAG_imported_unit |
18239 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18240 | { |
18241 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18242 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18243 | continue; |
18244 | } | |
18245 | ||
6f06d47b YQ |
18246 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18247 | abbrev); | |
cd9983dd | 18248 | |
48fbe735 | 18249 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18250 | |
18251 | /* This two-pass algorithm for processing partial symbols has a | |
18252 | high cost in cache pressure. Thus, handle some simple cases | |
18253 | here which cover the majority of C partial symbols. DIEs | |
18254 | which neither have specification tags in them, nor could have | |
18255 | specification tags elsewhere pointing at them, can simply be | |
18256 | processed and discarded. | |
18257 | ||
18258 | This segment is also optional; scan_partial_symbols and | |
18259 | add_partial_symbol will handle these DIEs if we chain | |
18260 | them in normally. When compilers which do not emit large | |
18261 | quantities of duplicate debug information are more common, | |
18262 | this code can probably be removed. */ | |
18263 | ||
18264 | /* Any complete simple types at the top level (pretty much all | |
18265 | of them, for a language without namespaces), can be processed | |
18266 | directly. */ | |
18267 | if (parent_die == NULL | |
cd9983dd YQ |
18268 | && pdi.has_specification == 0 |
18269 | && pdi.is_declaration == 0 | |
18270 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18271 | || pdi.tag == DW_TAG_base_type | |
18272 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18273 | { |
cd9983dd | 18274 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18275 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18276 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18277 | psymbol_placement::STATIC, |
1762568f | 18278 | 0, cu->language, objfile); |
cd9983dd | 18279 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18280 | continue; |
18281 | } | |
18282 | ||
d8228535 JK |
18283 | /* The exception for DW_TAG_typedef with has_children above is |
18284 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18285 | type_name_or_error will error on such types later. |
d8228535 JK |
18286 | |
18287 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18288 | it could not find the child DIEs referenced later, this is checked | |
18289 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18290 | ||
cd9983dd | 18291 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18292 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18293 | "- DIE at %s [in module %s]"), |
cd9983dd | 18294 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18295 | |
72bf9492 DJ |
18296 | /* If we're at the second level, and we're an enumerator, and |
18297 | our parent has no specification (meaning possibly lives in a | |
18298 | namespace elsewhere), then we can add the partial symbol now | |
18299 | instead of queueing it. */ | |
cd9983dd | 18300 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18301 | && parent_die != NULL |
18302 | && parent_die->die_parent == NULL | |
18303 | && parent_die->tag == DW_TAG_enumeration_type | |
18304 | && parent_die->has_specification == 0) | |
18305 | { | |
cd9983dd | 18306 | if (pdi.name == NULL) |
b98664d3 | 18307 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18308 | else if (building_psymtab) |
31edb802 | 18309 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18310 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18311 | cu->language == language_cplus |
75aedd27 TT |
18312 | ? psymbol_placement::GLOBAL |
18313 | : psymbol_placement::STATIC, | |
1762568f | 18314 | 0, cu->language, objfile); |
72bf9492 | 18315 | |
cd9983dd | 18316 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18317 | continue; |
18318 | } | |
18319 | ||
cd9983dd | 18320 | struct partial_die_info *part_die |
6f06d47b | 18321 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18322 | |
72bf9492 DJ |
18323 | /* We'll save this DIE so link it in. */ |
18324 | part_die->die_parent = parent_die; | |
18325 | part_die->die_sibling = NULL; | |
18326 | part_die->die_child = NULL; | |
18327 | ||
18328 | if (last_die && last_die == parent_die) | |
18329 | last_die->die_child = part_die; | |
18330 | else if (last_die) | |
18331 | last_die->die_sibling = part_die; | |
18332 | ||
18333 | last_die = part_die; | |
18334 | ||
18335 | if (first_die == NULL) | |
18336 | first_die = part_die; | |
18337 | ||
18338 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18339 | find interesting need to be in the hash table, because we | |
18340 | also have the parent/sibling/child chains; only those that we | |
18341 | might refer to by offset later during partial symbol reading. | |
18342 | ||
18343 | For now this means things that might have be the target of a | |
18344 | DW_AT_specification, DW_AT_abstract_origin, or | |
18345 | DW_AT_extension. DW_AT_extension will refer only to | |
18346 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18347 | many things under the function DIE, but we do not recurse | |
18348 | into function DIEs during partial symbol reading) and | |
18349 | possibly variables as well; DW_AT_specification refers to | |
18350 | declarations. Declarations ought to have the DW_AT_declaration | |
18351 | flag. It happens that GCC forgets to put it in sometimes, but | |
18352 | only for functions, not for types. | |
18353 | ||
18354 | Adding more things than necessary to the hash table is harmless | |
18355 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18356 | wasted time in find_partial_die, when we reread the compilation |
18357 | unit with load_all_dies set. */ | |
72bf9492 | 18358 | |
5afb4e99 | 18359 | if (load_all |
72929c62 | 18360 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18361 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18362 | || abbrev->tag == DW_TAG_variable |
18363 | || abbrev->tag == DW_TAG_namespace | |
18364 | || part_die->is_declaration) | |
18365 | { | |
18366 | void **slot; | |
18367 | ||
18368 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18369 | to_underlying (part_die->sect_off), |
18370 | INSERT); | |
72bf9492 DJ |
18371 | *slot = part_die; |
18372 | } | |
18373 | ||
72bf9492 | 18374 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18375 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18376 | languages we have to, so that we can get at method physnames |
18377 | to infer fully qualified class names, for DW_AT_specification, | |
18378 | and for C++ template arguments. For C++, we also look one level | |
18379 | inside functions to find template arguments (if the name of the | |
18380 | function does not already contain the template arguments). | |
bc30ff58 | 18381 | |
0a4b0913 AB |
18382 | For Ada and Fortran, we need to scan the children of subprograms |
18383 | and lexical blocks as well because these languages allow the | |
18384 | definition of nested entities that could be interesting for the | |
18385 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18386 | if (last_die->has_children |
5afb4e99 DJ |
18387 | && (load_all |
18388 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18389 | || last_die->tag == DW_TAG_module |
72bf9492 | 18390 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18391 | || (cu->language == language_cplus |
18392 | && last_die->tag == DW_TAG_subprogram | |
18393 | && (last_die->name == NULL | |
18394 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18395 | || (cu->language != language_c |
18396 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18397 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18398 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18399 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18400 | || ((cu->language == language_ada |
18401 | || cu->language == language_fortran) | |
bc30ff58 JB |
18402 | && (last_die->tag == DW_TAG_subprogram |
18403 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18404 | { |
18405 | nesting_level++; | |
18406 | parent_die = last_die; | |
18407 | continue; | |
18408 | } | |
18409 | ||
18410 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18411 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18412 | |
18413 | /* Back to the top, do it again. */ | |
18414 | } | |
18415 | } | |
18416 | ||
6f06d47b YQ |
18417 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18418 | struct abbrev_info *abbrev) | |
18419 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18420 | { | |
18421 | } | |
18422 | ||
35cc7ed7 YQ |
18423 | /* Read a minimal amount of information into the minimal die structure. |
18424 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18425 | |
48fbe735 YQ |
18426 | const gdb_byte * |
18427 | partial_die_info::read (const struct die_reader_specs *reader, | |
18428 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18429 | { |
dee91e82 | 18430 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18431 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
fa238c03 | 18432 | unsigned int i; |
c5aa993b | 18433 | int has_low_pc_attr = 0; |
c906108c | 18434 | int has_high_pc_attr = 0; |
91da1414 | 18435 | int high_pc_relative = 0; |
c906108c | 18436 | |
fd0a254f | 18437 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18438 | { |
e7da7f8f | 18439 | attribute attr; |
18a8505e | 18440 | bool need_reprocess; |
e7da7f8f | 18441 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18442 | info_ptr, &need_reprocess); |
18443 | /* String and address offsets that need to do the reprocessing have | |
18444 | already been read at this point, so there is no need to wait until | |
18445 | the loop terminates to do the reprocessing. */ | |
18446 | if (need_reprocess) | |
e7da7f8f | 18447 | read_attribute_reprocess (reader, &attr); |
c906108c | 18448 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18449 | partial symbol table. */ |
c906108c SS |
18450 | switch (attr.name) |
18451 | { | |
18452 | case DW_AT_name: | |
48fbe735 | 18453 | switch (tag) |
71c25dea TT |
18454 | { |
18455 | case DW_TAG_compile_unit: | |
95554aad | 18456 | case DW_TAG_partial_unit: |
348e048f | 18457 | case DW_TAG_type_unit: |
71c25dea TT |
18458 | /* Compilation units have a DW_AT_name that is a filename, not |
18459 | a source language identifier. */ | |
18460 | case DW_TAG_enumeration_type: | |
18461 | case DW_TAG_enumerator: | |
18462 | /* These tags always have simple identifiers already; no need | |
18463 | to canonicalize them. */ | |
48fbe735 | 18464 | name = DW_STRING (&attr); |
71c25dea TT |
18465 | break; |
18466 | default: | |
48fbe735 YQ |
18467 | { |
18468 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18469 | ||
18470 | name | |
be1e3d3e | 18471 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 18472 | } |
71c25dea TT |
18473 | break; |
18474 | } | |
c906108c | 18475 | break; |
31ef98ae | 18476 | case DW_AT_linkage_name: |
c906108c | 18477 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18478 | /* Note that both forms of linkage name might appear. We |
18479 | assume they will be the same, and we only store the last | |
18480 | one we see. */ | |
e61108c9 | 18481 | linkage_name = attr.value_as_string (); |
787de330 TT |
18482 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18483 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18484 | if (cu->language == language_rust && linkage_name != NULL | |
18485 | && strchr (linkage_name, '{') != NULL) | |
18486 | linkage_name = NULL; | |
c906108c SS |
18487 | break; |
18488 | case DW_AT_low_pc: | |
18489 | has_low_pc_attr = 1; | |
cd6c91b4 | 18490 | lowpc = attr.value_as_address (); |
c906108c SS |
18491 | break; |
18492 | case DW_AT_high_pc: | |
18493 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18494 | highpc = attr.value_as_address (); |
18495 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18496 | high_pc_relative = 1; |
c906108c SS |
18497 | break; |
18498 | case DW_AT_location: | |
0963b4bd | 18499 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18500 | if (attr.form_is_block ()) |
8e19ed76 | 18501 | { |
48fbe735 | 18502 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18503 | } |
cd6c91b4 | 18504 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18505 | { |
4d3c2250 | 18506 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18507 | } |
18508 | else | |
18509 | { | |
4d3c2250 KB |
18510 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18511 | "partial symbol information"); | |
8e19ed76 | 18512 | } |
c906108c | 18513 | break; |
c906108c | 18514 | case DW_AT_external: |
48fbe735 | 18515 | is_external = DW_UNSND (&attr); |
c906108c SS |
18516 | break; |
18517 | case DW_AT_declaration: | |
48fbe735 | 18518 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18519 | break; |
18520 | case DW_AT_type: | |
48fbe735 | 18521 | has_type = 1; |
c906108c SS |
18522 | break; |
18523 | case DW_AT_abstract_origin: | |
18524 | case DW_AT_specification: | |
72bf9492 | 18525 | case DW_AT_extension: |
48fbe735 | 18526 | has_specification = 1; |
0826b30a | 18527 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18528 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18529 | || cu->per_cu->is_dwz); |
c906108c SS |
18530 | break; |
18531 | case DW_AT_sibling: | |
18532 | /* Ignore absolute siblings, they might point outside of | |
18533 | the current compile unit. */ | |
18534 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18535 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18536 | else |
b9502d3f | 18537 | { |
48fbe735 | 18538 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18539 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18540 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18541 | |
18542 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18543 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18544 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18545 | reader->die_section->overflow_complaint (); |
b9502d3f | 18546 | else |
48fbe735 | 18547 | sibling = sibling_ptr; |
b9502d3f | 18548 | } |
c906108c | 18549 | break; |
fa4028e9 | 18550 | case DW_AT_byte_size: |
48fbe735 | 18551 | has_byte_size = 1; |
fa4028e9 | 18552 | break; |
ff908ebf | 18553 | case DW_AT_const_value: |
48fbe735 | 18554 | has_const_value = 1; |
ff908ebf | 18555 | break; |
68511cec CES |
18556 | case DW_AT_calling_convention: |
18557 | /* DWARF doesn't provide a way to identify a program's source-level | |
18558 | entry point. DW_AT_calling_convention attributes are only meant | |
18559 | to describe functions' calling conventions. | |
18560 | ||
18561 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18562 | Fortran, and before DWARF 4 DW_CC_program was the only |
18563 | piece of debugging information whose definition refers to | |
18564 | a 'main program' at all, several compilers marked Fortran | |
18565 | main programs with DW_CC_program --- even when those | |
18566 | functions use the standard calling conventions. | |
18567 | ||
18568 | Although DWARF now specifies a way to provide this | |
18569 | information, we support this practice for backward | |
18570 | compatibility. */ | |
68511cec | 18571 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18572 | && cu->language == language_fortran) |
48fbe735 | 18573 | main_subprogram = 1; |
68511cec | 18574 | break; |
481860b3 GB |
18575 | case DW_AT_inline: |
18576 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18577 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18578 | may_be_inlined = 1; |
481860b3 | 18579 | break; |
95554aad TT |
18580 | |
18581 | case DW_AT_import: | |
48fbe735 | 18582 | if (tag == DW_TAG_imported_unit) |
36586728 | 18583 | { |
0826b30a | 18584 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18585 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18586 | || cu->per_cu->is_dwz); |
18587 | } | |
95554aad TT |
18588 | break; |
18589 | ||
0c1b455e | 18590 | case DW_AT_main_subprogram: |
48fbe735 | 18591 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18592 | break; |
18593 | ||
05caa1d2 TT |
18594 | case DW_AT_ranges: |
18595 | { | |
18596 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18597 | but that requires a full DIE, so instead we just | |
18598 | reimplement it. */ | |
18599 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18600 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18601 | + (need_ranges_base | |
18602 | ? cu->ranges_base | |
18603 | : 0)); | |
18604 | ||
18605 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18606 | .debug_ranges section. */ | |
18607 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18608 | nullptr)) | |
18609 | has_pc_info = 1; | |
18610 | } | |
18611 | break; | |
18612 | ||
c906108c SS |
18613 | default: |
18614 | break; | |
18615 | } | |
18616 | } | |
18617 | ||
10d06d82 TT |
18618 | /* For Ada, if both the name and the linkage name appear, we prefer |
18619 | the latter. This lets "catch exception" work better, regardless | |
18620 | of the order in which the name and linkage name were emitted. | |
18621 | Really, though, this is just a workaround for the fact that gdb | |
18622 | doesn't store both the name and the linkage name. */ | |
18623 | if (cu->language == language_ada && linkage_name != nullptr) | |
18624 | name = linkage_name; | |
18625 | ||
91da1414 | 18626 | if (high_pc_relative) |
48fbe735 | 18627 | highpc += lowpc; |
91da1414 | 18628 | |
9373cf26 JK |
18629 | if (has_low_pc_attr && has_high_pc_attr) |
18630 | { | |
18631 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18632 | eliminate duplicate copies of functions and vtables and such. | |
18633 | The linker will arbitrarily choose one and discard the others. | |
18634 | The AT_*_pc values for such functions refer to local labels in | |
18635 | these sections. If the section from that file was discarded, the | |
18636 | labels are not in the output, so the relocs get a value of 0. | |
18637 | If this is a discarded function, mark the pc bounds as invalid, | |
18638 | so that GDB will ignore it. */ | |
5989a64e | 18639 | if (lowpc == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 18640 | { |
48fbe735 | 18641 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18642 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18643 | |
b98664d3 | 18644 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18645 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18646 | paddress (gdbarch, lowpc), |
18647 | sect_offset_str (sect_off), | |
9d8780f0 | 18648 | objfile_name (objfile)); |
9373cf26 JK |
18649 | } |
18650 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18651 | else if (lowpc >= highpc) |
9373cf26 | 18652 | { |
48fbe735 | 18653 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18654 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18655 | |
b98664d3 | 18656 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18657 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18658 | paddress (gdbarch, lowpc), |
18659 | paddress (gdbarch, highpc), | |
18660 | sect_offset_str (sect_off), | |
9c541725 | 18661 | objfile_name (objfile)); |
9373cf26 JK |
18662 | } |
18663 | else | |
48fbe735 | 18664 | has_pc_info = 1; |
9373cf26 | 18665 | } |
85cbf3d3 | 18666 | |
c906108c SS |
18667 | return info_ptr; |
18668 | } | |
18669 | ||
72bf9492 DJ |
18670 | /* Find a cached partial DIE at OFFSET in CU. */ |
18671 | ||
d590ff25 YQ |
18672 | struct partial_die_info * |
18673 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18674 | { |
18675 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18676 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18677 | |
9a3c8263 | 18678 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18679 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18680 | to_underlying (sect_off))); |
72bf9492 | 18681 | |
72bf9492 DJ |
18682 | return lookup_die; |
18683 | } | |
18684 | ||
348e048f DE |
18685 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18686 | except in the case of .debug_types DIEs which do not reference | |
18687 | outside their CU (they do however referencing other types via | |
55f1336d | 18688 | DW_FORM_ref_sig8). */ |
72bf9492 | 18689 | |
122cf0f2 | 18690 | static const struct cu_partial_die_info |
9c541725 | 18691 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18692 | { |
5e22e966 | 18693 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 18694 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18695 | struct dwarf2_per_cu_data *per_cu = NULL; |
18696 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18697 | |
36586728 | 18698 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18699 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18700 | { |
d590ff25 | 18701 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18702 | if (pd != NULL) |
fb816e8b | 18703 | return { cu, pd }; |
0d99eb77 DE |
18704 | /* We missed recording what we needed. |
18705 | Load all dies and try again. */ | |
18706 | per_cu = cu->per_cu; | |
5afb4e99 | 18707 | } |
0d99eb77 DE |
18708 | else |
18709 | { | |
18710 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18711 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18712 | { |
9d8780f0 SM |
18713 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18714 | " external reference to offset %s [in module %s].\n"), | |
18715 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18716 | bfd_get_filename (objfile->obfd)); |
18717 | } | |
9c541725 | 18718 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18719 | dwarf2_per_objfile); |
72bf9492 | 18720 | |
0d99eb77 | 18721 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
ab432490 | 18722 | load_partial_comp_unit (per_cu, cu->per_objfile); |
ae038cb0 | 18723 | |
0d99eb77 | 18724 | per_cu->cu->last_used = 0; |
d590ff25 | 18725 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18726 | } |
5afb4e99 | 18727 | |
dee91e82 DE |
18728 | /* If we didn't find it, and not all dies have been loaded, |
18729 | load them all and try again. */ | |
18730 | ||
5afb4e99 DJ |
18731 | if (pd == NULL && per_cu->load_all_dies == 0) |
18732 | { | |
5afb4e99 | 18733 | per_cu->load_all_dies = 1; |
fd820528 DE |
18734 | |
18735 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18736 | THIS_CU->cu may already be in use. So we can't just free it and | |
18737 | replace its DIEs with the ones we read in. Instead, we leave those | |
18738 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18739 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18740 | set. */ | |
ab432490 | 18741 | load_partial_comp_unit (per_cu, cu->per_objfile); |
5afb4e99 | 18742 | |
d590ff25 | 18743 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18744 | } |
18745 | ||
18746 | if (pd == NULL) | |
18747 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18748 | _("could not find partial DIE %s " |
3e43a32a | 18749 | "in cache [from module %s]\n"), |
9d8780f0 | 18750 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18751 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18752 | } |
18753 | ||
abc72ce4 DE |
18754 | /* See if we can figure out if the class lives in a namespace. We do |
18755 | this by looking for a member function; its demangled name will | |
18756 | contain namespace info, if there is any. */ | |
18757 | ||
18758 | static void | |
18759 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18760 | struct dwarf2_cu *cu) | |
18761 | { | |
18762 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18763 | what template types look like, because the demangler | |
18764 | frequently doesn't give the same name as the debug info. We | |
18765 | could fix this by only using the demangled name to get the | |
18766 | prefix (but see comment in read_structure_type). */ | |
18767 | ||
18768 | struct partial_die_info *real_pdi; | |
18769 | struct partial_die_info *child_pdi; | |
18770 | ||
18771 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18772 | we should not do this. We'll prepend the parent's fully qualified | |
18773 | name when we create the partial symbol. */ | |
18774 | ||
18775 | real_pdi = struct_pdi; | |
18776 | while (real_pdi->has_specification) | |
fb816e8b | 18777 | { |
122cf0f2 AB |
18778 | auto res = find_partial_die (real_pdi->spec_offset, |
18779 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18780 | real_pdi = res.pdi; |
18781 | cu = res.cu; | |
18782 | } | |
abc72ce4 DE |
18783 | |
18784 | if (real_pdi->die_parent != NULL) | |
18785 | return; | |
18786 | ||
18787 | for (child_pdi = struct_pdi->die_child; | |
18788 | child_pdi != NULL; | |
18789 | child_pdi = child_pdi->die_sibling) | |
18790 | { | |
18791 | if (child_pdi->tag == DW_TAG_subprogram | |
18792 | && child_pdi->linkage_name != NULL) | |
18793 | { | |
43816ebc TT |
18794 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18795 | (language_class_name_from_physname (cu->language_defn, | |
18796 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18797 | if (actual_class_name != NULL) |
18798 | { | |
5e22e966 | 18799 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18800 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18801 | } |
18802 | break; | |
18803 | } | |
18804 | } | |
18805 | } | |
18806 | ||
25c11aca TV |
18807 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18808 | attribute. */ | |
18809 | ||
18810 | static bool | |
18811 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18812 | { | |
18813 | switch (tag) | |
18814 | { | |
18815 | case DW_TAG_constant: | |
18816 | case DW_TAG_enumerator: | |
18817 | case DW_TAG_formal_parameter: | |
18818 | case DW_TAG_template_value_param: | |
18819 | case DW_TAG_variable: | |
18820 | return true; | |
18821 | } | |
18822 | ||
18823 | return false; | |
18824 | } | |
18825 | ||
52356b79 YQ |
18826 | void |
18827 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18828 | { |
abc72ce4 DE |
18829 | /* Once we've fixed up a die, there's no point in doing so again. |
18830 | This also avoids a memory leak if we were to call | |
18831 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18832 | if (fixup_called) |
abc72ce4 DE |
18833 | return; |
18834 | ||
72bf9492 DJ |
18835 | /* If we found a reference attribute and the DIE has no name, try |
18836 | to find a name in the referred to DIE. */ | |
18837 | ||
52356b79 | 18838 | if (name == NULL && has_specification) |
72bf9492 DJ |
18839 | { |
18840 | struct partial_die_info *spec_die; | |
72bf9492 | 18841 | |
122cf0f2 | 18842 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18843 | spec_die = res.pdi; |
18844 | cu = res.cu; | |
72bf9492 | 18845 | |
52356b79 | 18846 | spec_die->fixup (cu); |
72bf9492 DJ |
18847 | |
18848 | if (spec_die->name) | |
18849 | { | |
52356b79 | 18850 | name = spec_die->name; |
72bf9492 DJ |
18851 | |
18852 | /* Copy DW_AT_external attribute if it is set. */ | |
18853 | if (spec_die->is_external) | |
52356b79 | 18854 | is_external = spec_die->is_external; |
72bf9492 DJ |
18855 | } |
18856 | } | |
18857 | ||
25c11aca TV |
18858 | if (!has_const_value && has_specification |
18859 | && can_have_DW_AT_const_value_p (tag)) | |
18860 | { | |
18861 | struct partial_die_info *spec_die; | |
18862 | ||
18863 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18864 | spec_die = res.pdi; | |
18865 | cu = res.cu; | |
18866 | ||
18867 | spec_die->fixup (cu); | |
18868 | ||
18869 | if (spec_die->has_const_value) | |
18870 | { | |
18871 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18872 | has_const_value = spec_die->has_const_value; | |
18873 | } | |
18874 | } | |
18875 | ||
72bf9492 | 18876 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18877 | |
52356b79 YQ |
18878 | if (name == NULL && tag == DW_TAG_namespace) |
18879 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18880 | |
abc72ce4 DE |
18881 | /* If there is no parent die to provide a namespace, and there are |
18882 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18883 | name. */ |
abc72ce4 | 18884 | if (cu->language == language_cplus |
5e22e966 | 18885 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
18886 | && die_parent == NULL |
18887 | && has_children | |
18888 | && (tag == DW_TAG_class_type | |
18889 | || tag == DW_TAG_structure_type | |
18890 | || tag == DW_TAG_union_type)) | |
18891 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18892 | |
53832f31 TT |
18893 | /* GCC might emit a nameless struct or union that has a linkage |
18894 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18895 | if (name == NULL |
18896 | && (tag == DW_TAG_class_type | |
18897 | || tag == DW_TAG_interface_type | |
18898 | || tag == DW_TAG_structure_type | |
18899 | || tag == DW_TAG_union_type) | |
18900 | && linkage_name != NULL) | |
53832f31 | 18901 | { |
43816ebc TT |
18902 | gdb::unique_xmalloc_ptr<char> demangled |
18903 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18904 | if (demangled != nullptr) | |
53832f31 | 18905 | { |
96408a79 SA |
18906 | const char *base; |
18907 | ||
18908 | /* Strip any leading namespaces/classes, keep only the base name. | |
18909 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18910 | base = strrchr (demangled.get (), ':'); |
18911 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18912 | base++; |
18913 | else | |
43816ebc | 18914 | base = demangled.get (); |
96408a79 | 18915 | |
5e22e966 | 18916 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18917 | name = objfile->intern (base); |
53832f31 TT |
18918 | } |
18919 | } | |
18920 | ||
52356b79 | 18921 | fixup_called = 1; |
72bf9492 DJ |
18922 | } |
18923 | ||
41144253 | 18924 | /* Read the .debug_loclists header contents from the given SECTION in the |
18925 | HEADER. */ | |
18926 | static void | |
18927 | read_loclist_header (struct loclist_header *header, | |
18928 | struct dwarf2_section_info *section) | |
18929 | { | |
18930 | unsigned int bytes_read; | |
18931 | bfd *abfd = section->get_bfd_owner (); | |
18932 | const gdb_byte *info_ptr = section->buffer; | |
18933 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
18934 | info_ptr += bytes_read; | |
18935 | header->version = read_2_bytes (abfd, info_ptr); | |
18936 | info_ptr += 2; | |
18937 | header->addr_size = read_1_byte (abfd, info_ptr); | |
18938 | info_ptr += 1; | |
18939 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
18940 | info_ptr += 1; | |
18941 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
18942 | } | |
18943 | ||
18944 | /* Return the DW_AT_loclists_base value for the CU. */ | |
18945 | static ULONGEST | |
18946 | lookup_loclist_base (struct dwarf2_cu *cu) | |
18947 | { | |
18948 | /* For the .dwo unit, the loclist_base points to the first offset following | |
18949 | the header. The header consists of the following entities- | |
18950 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
18951 | bit format) | |
18952 | 2. version (2 bytes) | |
18953 | 3. address size (1 byte) | |
18954 | 4. segment selector size (1 byte) | |
18955 | 5. offset entry count (4 bytes) | |
18956 | These sizes are derived as per the DWARFv5 standard. */ | |
18957 | if (cu->dwo_unit != nullptr) | |
18958 | { | |
18959 | if (cu->header.initial_length_size == 4) | |
18960 | return LOCLIST_HEADER_SIZE32; | |
18961 | return LOCLIST_HEADER_SIZE64; | |
18962 | } | |
18963 | return cu->loclist_base; | |
18964 | } | |
18965 | ||
18966 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
18967 | array of offsets in the .debug_loclists section. */ | |
18968 | static CORE_ADDR | |
18969 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
18970 | { | |
5e22e966 | 18971 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
41144253 | 18972 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
18973 | bfd *abfd = objfile->obfd; | |
18974 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
18975 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
18976 | ||
18977 | section->read (objfile); | |
18978 | if (section->buffer == NULL) | |
18979 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
18980 | "section [in module %s]"), objfile_name (objfile)); | |
18981 | struct loclist_header header; | |
18982 | read_loclist_header (&header, section); | |
18983 | if (loclist_index >= header.offset_entry_count) | |
18984 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18985 | ".debug_loclists offset array [in module %s]"), | |
18986 | objfile_name (objfile)); | |
18987 | if (loclist_base + loclist_index * cu->header.offset_size | |
18988 | >= section->size) | |
18989 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18990 | ".debug_loclists section [in module %s]"), | |
18991 | objfile_name (objfile)); | |
18992 | const gdb_byte *info_ptr | |
18993 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
18994 | ||
18995 | if (cu->header.offset_size == 4) | |
18996 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
18997 | else | |
18998 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
18999 | } | |
19000 | ||
18a8505e AT |
19001 | /* Process the attributes that had to be skipped in the first round. These |
19002 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19003 | They could not have been processed in the first round, because at the time | |
19004 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
19005 | static void |
19006 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
19007 | struct attribute *attr) | |
18a8505e AT |
19008 | { |
19009 | struct dwarf2_cu *cu = reader->cu; | |
19010 | switch (attr->form) | |
19011 | { | |
19012 | case DW_FORM_addrx: | |
19013 | case DW_FORM_GNU_addr_index: | |
19014 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19015 | break; | |
41144253 | 19016 | case DW_FORM_loclistx: |
19017 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19018 | break; | |
18a8505e AT |
19019 | case DW_FORM_strx: |
19020 | case DW_FORM_strx1: | |
19021 | case DW_FORM_strx2: | |
19022 | case DW_FORM_strx3: | |
19023 | case DW_FORM_strx4: | |
19024 | case DW_FORM_GNU_str_index: | |
19025 | { | |
19026 | unsigned int str_index = DW_UNSND (attr); | |
19027 | if (reader->dwo_file != NULL) | |
19028 | { | |
19029 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19030 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19031 | } | |
19032 | else | |
19033 | { | |
19034 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19035 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19036 | } | |
19037 | break; | |
19038 | } | |
19039 | default: | |
19040 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19041 | } | |
19042 | } | |
19043 | ||
a8329558 | 19044 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19045 | |
d521ce57 | 19046 | static const gdb_byte * |
dee91e82 DE |
19047 | read_attribute_value (const struct die_reader_specs *reader, |
19048 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19049 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19050 | bool *need_reprocess) | |
c906108c | 19051 | { |
dee91e82 | 19052 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19053 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 19054 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
dee91e82 | 19055 | bfd *abfd = reader->abfd; |
e7c27a73 | 19056 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19057 | unsigned int bytes_read; |
19058 | struct dwarf_block *blk; | |
18a8505e | 19059 | *need_reprocess = false; |
c906108c | 19060 | |
aead7601 | 19061 | attr->form = (enum dwarf_form) form; |
a8329558 | 19062 | switch (form) |
c906108c | 19063 | { |
c906108c | 19064 | case DW_FORM_ref_addr: |
ae411497 | 19065 | if (cu->header.version == 2) |
c8a7a66f TT |
19066 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19067 | &bytes_read); | |
ae411497 | 19068 | else |
8266302d TT |
19069 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19070 | &bytes_read); | |
ae411497 TT |
19071 | info_ptr += bytes_read; |
19072 | break; | |
36586728 | 19073 | case DW_FORM_GNU_ref_alt: |
8266302d | 19074 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19075 | info_ptr += bytes_read; |
19076 | break; | |
ae411497 | 19077 | case DW_FORM_addr: |
08feed99 TT |
19078 | { |
19079 | struct gdbarch *gdbarch = objfile->arch (); | |
19080 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19081 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19082 | info_ptr += bytes_read; | |
19083 | } | |
c906108c SS |
19084 | break; |
19085 | case DW_FORM_block2: | |
7b5a2f43 | 19086 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19087 | blk->size = read_2_bytes (abfd, info_ptr); |
19088 | info_ptr += 2; | |
19089 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19090 | info_ptr += blk->size; | |
19091 | DW_BLOCK (attr) = blk; | |
19092 | break; | |
19093 | case DW_FORM_block4: | |
7b5a2f43 | 19094 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19095 | blk->size = read_4_bytes (abfd, info_ptr); |
19096 | info_ptr += 4; | |
19097 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19098 | info_ptr += blk->size; | |
19099 | DW_BLOCK (attr) = blk; | |
19100 | break; | |
19101 | case DW_FORM_data2: | |
19102 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19103 | info_ptr += 2; | |
19104 | break; | |
19105 | case DW_FORM_data4: | |
19106 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19107 | info_ptr += 4; | |
19108 | break; | |
19109 | case DW_FORM_data8: | |
19110 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19111 | info_ptr += 8; | |
19112 | break; | |
0224619f JK |
19113 | case DW_FORM_data16: |
19114 | blk = dwarf_alloc_block (cu); | |
19115 | blk->size = 16; | |
19116 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19117 | info_ptr += 16; | |
19118 | DW_BLOCK (attr) = blk; | |
19119 | break; | |
2dc7f7b3 | 19120 | case DW_FORM_sec_offset: |
8266302d | 19121 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19122 | info_ptr += bytes_read; |
19123 | break; | |
41144253 | 19124 | case DW_FORM_loclistx: |
19125 | { | |
19126 | *need_reprocess = true; | |
19127 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19128 | info_ptr += bytes_read; | |
19129 | } | |
19130 | break; | |
c906108c | 19131 | case DW_FORM_string: |
9b1c24c8 | 19132 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19133 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19134 | info_ptr += bytes_read; |
19135 | break; | |
4bdf3d34 | 19136 | case DW_FORM_strp: |
36586728 TT |
19137 | if (!cu->per_cu->is_dwz) |
19138 | { | |
ed2dc618 SM |
19139 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19140 | abfd, info_ptr, cu_header, | |
36586728 TT |
19141 | &bytes_read); |
19142 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19143 | info_ptr += bytes_read; | |
19144 | break; | |
19145 | } | |
19146 | /* FALLTHROUGH */ | |
43988095 JK |
19147 | case DW_FORM_line_strp: |
19148 | if (!cu->per_cu->is_dwz) | |
19149 | { | |
86c0bb4c TT |
19150 | DW_STRING (attr) |
19151 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
19152 | &bytes_read); | |
43988095 JK |
19153 | DW_STRING_IS_CANONICAL (attr) = 0; |
19154 | info_ptr += bytes_read; | |
19155 | break; | |
19156 | } | |
19157 | /* FALLTHROUGH */ | |
36586728 TT |
19158 | case DW_FORM_GNU_strp_alt: |
19159 | { | |
c3699833 | 19160 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
8266302d TT |
19161 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19162 | &bytes_read); | |
36586728 | 19163 | |
0314b390 | 19164 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19165 | DW_STRING_IS_CANONICAL (attr) = 0; |
19166 | info_ptr += bytes_read; | |
19167 | } | |
4bdf3d34 | 19168 | break; |
2dc7f7b3 | 19169 | case DW_FORM_exprloc: |
c906108c | 19170 | case DW_FORM_block: |
7b5a2f43 | 19171 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19172 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19173 | info_ptr += bytes_read; | |
19174 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19175 | info_ptr += blk->size; | |
19176 | DW_BLOCK (attr) = blk; | |
19177 | break; | |
19178 | case DW_FORM_block1: | |
7b5a2f43 | 19179 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19180 | blk->size = read_1_byte (abfd, info_ptr); |
19181 | info_ptr += 1; | |
19182 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19183 | info_ptr += blk->size; | |
19184 | DW_BLOCK (attr) = blk; | |
19185 | break; | |
19186 | case DW_FORM_data1: | |
19187 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19188 | info_ptr += 1; | |
19189 | break; | |
19190 | case DW_FORM_flag: | |
19191 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19192 | info_ptr += 1; | |
19193 | break; | |
2dc7f7b3 TT |
19194 | case DW_FORM_flag_present: |
19195 | DW_UNSND (attr) = 1; | |
19196 | break; | |
c906108c SS |
19197 | case DW_FORM_sdata: |
19198 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19199 | info_ptr += bytes_read; | |
19200 | break; | |
19201 | case DW_FORM_udata: | |
18a8505e | 19202 | case DW_FORM_rnglistx: |
c906108c SS |
19203 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19204 | info_ptr += bytes_read; | |
19205 | break; | |
19206 | case DW_FORM_ref1: | |
9c541725 | 19207 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19208 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19209 | info_ptr += 1; |
19210 | break; | |
19211 | case DW_FORM_ref2: | |
9c541725 | 19212 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19213 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19214 | info_ptr += 2; |
19215 | break; | |
19216 | case DW_FORM_ref4: | |
9c541725 | 19217 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19218 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19219 | info_ptr += 4; |
19220 | break; | |
613e1657 | 19221 | case DW_FORM_ref8: |
9c541725 | 19222 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19223 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19224 | info_ptr += 8; |
19225 | break; | |
55f1336d | 19226 | case DW_FORM_ref_sig8: |
ac9ec31b | 19227 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19228 | info_ptr += 8; |
19229 | break; | |
c906108c | 19230 | case DW_FORM_ref_udata: |
9c541725 | 19231 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19232 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19233 | info_ptr += bytes_read; |
19234 | break; | |
c906108c | 19235 | case DW_FORM_indirect: |
a8329558 KW |
19236 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19237 | info_ptr += bytes_read; | |
43988095 JK |
19238 | if (form == DW_FORM_implicit_const) |
19239 | { | |
19240 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19241 | info_ptr += bytes_read; | |
19242 | } | |
19243 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19244 | info_ptr, need_reprocess); |
43988095 JK |
19245 | break; |
19246 | case DW_FORM_implicit_const: | |
19247 | DW_SND (attr) = implicit_const; | |
a8329558 | 19248 | break; |
336d760d | 19249 | case DW_FORM_addrx: |
3019eac3 | 19250 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19251 | *need_reprocess = true; |
19252 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19253 | info_ptr += bytes_read; |
19254 | break; | |
cf532bd1 | 19255 | case DW_FORM_strx: |
15f18d14 AT |
19256 | case DW_FORM_strx1: |
19257 | case DW_FORM_strx2: | |
19258 | case DW_FORM_strx3: | |
19259 | case DW_FORM_strx4: | |
3019eac3 | 19260 | case DW_FORM_GNU_str_index: |
3019eac3 | 19261 | { |
15f18d14 AT |
19262 | ULONGEST str_index; |
19263 | if (form == DW_FORM_strx1) | |
19264 | { | |
19265 | str_index = read_1_byte (abfd, info_ptr); | |
19266 | info_ptr += 1; | |
19267 | } | |
19268 | else if (form == DW_FORM_strx2) | |
19269 | { | |
19270 | str_index = read_2_bytes (abfd, info_ptr); | |
19271 | info_ptr += 2; | |
19272 | } | |
19273 | else if (form == DW_FORM_strx3) | |
19274 | { | |
19275 | str_index = read_3_bytes (abfd, info_ptr); | |
19276 | info_ptr += 3; | |
19277 | } | |
19278 | else if (form == DW_FORM_strx4) | |
19279 | { | |
19280 | str_index = read_4_bytes (abfd, info_ptr); | |
19281 | info_ptr += 4; | |
19282 | } | |
19283 | else | |
19284 | { | |
19285 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19286 | info_ptr += bytes_read; | |
19287 | } | |
18a8505e AT |
19288 | *need_reprocess = true; |
19289 | DW_UNSND (attr) = str_index; | |
19290 | } | |
3019eac3 | 19291 | break; |
c906108c | 19292 | default: |
8a3fe4f8 | 19293 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19294 | dwarf_form_name (form), |
19295 | bfd_get_filename (abfd)); | |
c906108c | 19296 | } |
28e94949 | 19297 | |
36586728 | 19298 | /* Super hack. */ |
cd6c91b4 | 19299 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19300 | attr->form = DW_FORM_GNU_ref_alt; |
19301 | ||
28e94949 JB |
19302 | /* We have seen instances where the compiler tried to emit a byte |
19303 | size attribute of -1 which ended up being encoded as an unsigned | |
19304 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19305 | an object of this size seems pretty unlikely so we can relatively | |
19306 | safely treat these cases as if the size attribute was invalid and | |
19307 | treat them as zero by default. */ | |
19308 | if (attr->name == DW_AT_byte_size | |
19309 | && form == DW_FORM_data4 | |
19310 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19311 | { |
19312 | complaint | |
b98664d3 | 19313 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19314 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19315 | DW_UNSND (attr) = 0; |
19316 | } | |
28e94949 | 19317 | |
c906108c SS |
19318 | return info_ptr; |
19319 | } | |
19320 | ||
a8329558 KW |
19321 | /* Read an attribute described by an abbreviated attribute. */ |
19322 | ||
d521ce57 | 19323 | static const gdb_byte * |
dee91e82 DE |
19324 | read_attribute (const struct die_reader_specs *reader, |
19325 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19326 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19327 | { |
19328 | attr->name = abbrev->name; | |
43988095 | 19329 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19330 | abbrev->implicit_const, info_ptr, |
19331 | need_reprocess); | |
a8329558 KW |
19332 | } |
19333 | ||
43988095 JK |
19334 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19335 | ||
19336 | static const char * | |
ed2dc618 | 19337 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 19338 | LONGEST str_offset) |
43988095 | 19339 | { |
5989a64e SM |
19340 | return dwarf2_per_objfile->per_bfd->str.read_string |
19341 | (dwarf2_per_objfile->objfile, str_offset, "DW_FORM_strp"); | |
c906108c SS |
19342 | } |
19343 | ||
43988095 JK |
19344 | /* Return pointer to string at .debug_str offset as read from BUF. |
19345 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19346 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19347 | ||
d521ce57 | 19348 | static const char * |
ed2dc618 SM |
19349 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19350 | const gdb_byte *buf, | |
cf2c3c16 TT |
19351 | const struct comp_unit_head *cu_header, |
19352 | unsigned int *bytes_read_ptr) | |
19353 | { | |
8266302d | 19354 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19355 | |
4f44ae6c | 19356 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
19357 | } |
19358 | ||
86c0bb4c | 19359 | /* See read.h. */ |
43988095 | 19360 | |
86c0bb4c TT |
19361 | const char * |
19362 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19363 | const struct comp_unit_head *cu_header, |
19364 | unsigned int *bytes_read_ptr) | |
43988095 | 19365 | { |
86c0bb4c | 19366 | bfd *abfd = objfile->obfd; |
8266302d | 19367 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19368 | |
5989a64e | 19369 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19370 | } |
19371 | ||
3019eac3 | 19372 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19373 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19374 | ADDR_SIZE is the size of addresses from the CU header. */ |
19375 | ||
19376 | static CORE_ADDR | |
ed2dc618 | 19377 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19378 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19379 | int addr_size) | |
3019eac3 DE |
19380 | { |
19381 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19382 | bfd *abfd = objfile->obfd; | |
19383 | const gdb_byte *info_ptr; | |
18a8505e | 19384 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19385 | |
5989a64e SM |
19386 | dwarf2_per_objfile->per_bfd->addr.read (objfile); |
19387 | if (dwarf2_per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 19388 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 19389 | objfile_name (objfile)); |
18a8505e | 19390 | if (addr_base_or_zero + addr_index * addr_size |
5989a64e | 19391 | >= dwarf2_per_objfile->per_bfd->addr.size) |
3019eac3 DE |
19392 | error (_("DW_FORM_addr_index pointing outside of " |
19393 | ".debug_addr section [in module %s]"), | |
4262abfb | 19394 | objfile_name (objfile)); |
5989a64e | 19395 | info_ptr = (dwarf2_per_objfile->per_bfd->addr.buffer |
18a8505e | 19396 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19397 | if (addr_size == 4) |
19398 | return bfd_get_32 (abfd, info_ptr); | |
19399 | else | |
19400 | return bfd_get_64 (abfd, info_ptr); | |
19401 | } | |
19402 | ||
19403 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19404 | ||
19405 | static CORE_ADDR | |
19406 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19407 | { | |
5e22e966 | 19408 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 19409 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
19410 | } |
19411 | ||
19412 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19413 | ||
19414 | static CORE_ADDR | |
d521ce57 | 19415 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19416 | unsigned int *bytes_read) |
19417 | { | |
5e22e966 | 19418 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
19419 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19420 | ||
19421 | return read_addr_index (cu, addr_index); | |
19422 | } | |
19423 | ||
450a1bfc | 19424 | /* See read.h. */ |
3019eac3 DE |
19425 | |
19426 | CORE_ADDR | |
82ca3f51 SM |
19427 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
19428 | dwarf2_per_objfile *dwarf2_per_objfile, | |
19429 | unsigned int addr_index) | |
3019eac3 | 19430 | { |
3019eac3 | 19431 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 19432 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19433 | int addr_size; |
19434 | ||
3019eac3 DE |
19435 | /* We need addr_base and addr_size. |
19436 | If we don't have PER_CU->cu, we have to get it. | |
19437 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19438 | which at this point doesn't seem justified: it's not clear how frequently | |
19439 | it would get used and it would increase the size of every PER_CU. | |
19440 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19441 | so we're not in uncharted territory here. | |
19442 | Alas we need to be a bit more complicated as addr_base is contained | |
19443 | in the DIE. | |
19444 | ||
19445 | We don't need to read the entire CU(/TU). | |
19446 | We just need the header and top level die. | |
a1b64ce1 | 19447 | |
3019eac3 | 19448 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19449 | For now we skip this optimization. */ |
3019eac3 DE |
19450 | |
19451 | if (cu != NULL) | |
19452 | { | |
19453 | addr_base = cu->addr_base; | |
19454 | addr_size = cu->header.addr_size; | |
19455 | } | |
19456 | else | |
19457 | { | |
ab432490 | 19458 | cutu_reader reader (per_cu, dwarf2_per_objfile, NULL, 0, false); |
c0ab21c2 TT |
19459 | addr_base = reader.cu->addr_base; |
19460 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19461 | } |
19462 | ||
ed2dc618 SM |
19463 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19464 | addr_size); | |
3019eac3 DE |
19465 | } |
19466 | ||
18a8505e AT |
19467 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19468 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19469 | DWO file. */ | |
3019eac3 | 19470 | |
d521ce57 | 19471 | static const char * |
18a8505e AT |
19472 | read_str_index (struct dwarf2_cu *cu, |
19473 | struct dwarf2_section_info *str_section, | |
19474 | struct dwarf2_section_info *str_offsets_section, | |
19475 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19476 | { |
5e22e966 | 19477 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19478 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19479 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19480 | bfd *abfd = objfile->obfd; |
d521ce57 | 19481 | const gdb_byte *info_ptr; |
3019eac3 | 19482 | ULONGEST str_offset; |
cf532bd1 | 19483 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19484 | |
96b79293 TT |
19485 | str_section->read (objfile); |
19486 | str_offsets_section->read (objfile); | |
73869dc2 | 19487 | if (str_section->buffer == NULL) |
18a8505e | 19488 | error (_("%s used without %s section" |
9d8780f0 | 19489 | " in CU at offset %s [in module %s]"), |
96b79293 | 19490 | form_name, str_section->get_name (), |
18a8505e | 19491 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19492 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19493 | error (_("%s used without %s section" |
9d8780f0 | 19494 | " in CU at offset %s [in module %s]"), |
96b79293 | 19495 | form_name, str_section->get_name (), |
18a8505e | 19496 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19497 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19498 | + str_offsets_base |
3019eac3 DE |
19499 | + str_index * cu->header.offset_size); |
19500 | if (cu->header.offset_size == 4) | |
19501 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19502 | else | |
19503 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19504 | if (str_offset >= str_section->size) |
57d63ce2 | 19505 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19506 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19507 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19508 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19509 | } |
19510 | ||
18a8505e AT |
19511 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19512 | ||
19513 | static const char * | |
19514 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19515 | { | |
19516 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19517 | ? reader->cu->header.addr_size : 0; | |
19518 | return read_str_index (reader->cu, | |
19519 | &reader->dwo_file->sections.str, | |
19520 | &reader->dwo_file->sections.str_offsets, | |
19521 | str_offsets_base, str_index); | |
19522 | } | |
19523 | ||
19524 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19525 | ||
19526 | static const char * | |
19527 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19528 | { | |
5e22e966 | 19529 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
19530 | const char *objf_name = objfile_name (objfile); |
19531 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19532 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19533 | ||
19534 | if (!cu->str_offsets_base.has_value ()) | |
19535 | error (_("%s used in Fission stub without %s" | |
19536 | " in CU at offset 0x%lx [in module %s]"), | |
19537 | form_name, str_offsets_attr_name, | |
19538 | (long) cu->header.offset_size, objf_name); | |
19539 | ||
19540 | return read_str_index (cu, | |
5e22e966 SM |
19541 | &cu->per_objfile->per_bfd->str, |
19542 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
19543 | *cu->str_offsets_base, str_index); |
19544 | } | |
19545 | ||
3019eac3 DE |
19546 | /* Return the length of an LEB128 number in BUF. */ |
19547 | ||
19548 | static int | |
19549 | leb128_size (const gdb_byte *buf) | |
19550 | { | |
19551 | const gdb_byte *begin = buf; | |
19552 | gdb_byte byte; | |
19553 | ||
19554 | while (1) | |
19555 | { | |
19556 | byte = *buf++; | |
19557 | if ((byte & 128) == 0) | |
19558 | return buf - begin; | |
19559 | } | |
19560 | } | |
19561 | ||
c906108c | 19562 | static void |
e142c38c | 19563 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19564 | { |
19565 | switch (lang) | |
19566 | { | |
19567 | case DW_LANG_C89: | |
76bee0cc | 19568 | case DW_LANG_C99: |
0cfd832f | 19569 | case DW_LANG_C11: |
c906108c | 19570 | case DW_LANG_C: |
d1be3247 | 19571 | case DW_LANG_UPC: |
e142c38c | 19572 | cu->language = language_c; |
c906108c | 19573 | break; |
9c37b5ae | 19574 | case DW_LANG_Java: |
c906108c | 19575 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19576 | case DW_LANG_C_plus_plus_11: |
19577 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19578 | cu->language = language_cplus; |
c906108c | 19579 | break; |
6aecb9c2 JB |
19580 | case DW_LANG_D: |
19581 | cu->language = language_d; | |
19582 | break; | |
c906108c SS |
19583 | case DW_LANG_Fortran77: |
19584 | case DW_LANG_Fortran90: | |
b21b22e0 | 19585 | case DW_LANG_Fortran95: |
f7de9aab MW |
19586 | case DW_LANG_Fortran03: |
19587 | case DW_LANG_Fortran08: | |
e142c38c | 19588 | cu->language = language_fortran; |
c906108c | 19589 | break; |
a766d390 DE |
19590 | case DW_LANG_Go: |
19591 | cu->language = language_go; | |
19592 | break; | |
c906108c | 19593 | case DW_LANG_Mips_Assembler: |
e142c38c | 19594 | cu->language = language_asm; |
c906108c SS |
19595 | break; |
19596 | case DW_LANG_Ada83: | |
8aaf0b47 | 19597 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19598 | cu->language = language_ada; |
19599 | break; | |
72019c9c GM |
19600 | case DW_LANG_Modula2: |
19601 | cu->language = language_m2; | |
19602 | break; | |
fe8e67fd PM |
19603 | case DW_LANG_Pascal83: |
19604 | cu->language = language_pascal; | |
19605 | break; | |
22566fbd DJ |
19606 | case DW_LANG_ObjC: |
19607 | cu->language = language_objc; | |
19608 | break; | |
c44af4eb TT |
19609 | case DW_LANG_Rust: |
19610 | case DW_LANG_Rust_old: | |
19611 | cu->language = language_rust; | |
19612 | break; | |
c906108c SS |
19613 | case DW_LANG_Cobol74: |
19614 | case DW_LANG_Cobol85: | |
c906108c | 19615 | default: |
e142c38c | 19616 | cu->language = language_minimal; |
c906108c SS |
19617 | break; |
19618 | } | |
e142c38c | 19619 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19620 | } |
19621 | ||
19622 | /* Return the named attribute or NULL if not there. */ | |
19623 | ||
19624 | static struct attribute * | |
e142c38c | 19625 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19626 | { |
a48e046c | 19627 | for (;;) |
c906108c | 19628 | { |
a48e046c TT |
19629 | unsigned int i; |
19630 | struct attribute *spec = NULL; | |
19631 | ||
19632 | for (i = 0; i < die->num_attrs; ++i) | |
19633 | { | |
19634 | if (die->attrs[i].name == name) | |
19635 | return &die->attrs[i]; | |
19636 | if (die->attrs[i].name == DW_AT_specification | |
19637 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19638 | spec = &die->attrs[i]; | |
19639 | } | |
19640 | ||
19641 | if (!spec) | |
19642 | break; | |
c906108c | 19643 | |
f2f0e013 | 19644 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19645 | } |
c5aa993b | 19646 | |
c906108c SS |
19647 | return NULL; |
19648 | } | |
19649 | ||
7d45c7c3 KB |
19650 | /* Return the string associated with a string-typed attribute, or NULL if it |
19651 | is either not found or is of an incorrect type. */ | |
19652 | ||
19653 | static const char * | |
19654 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19655 | { | |
19656 | struct attribute *attr; | |
19657 | const char *str = NULL; | |
19658 | ||
19659 | attr = dwarf2_attr (die, name, cu); | |
19660 | ||
19661 | if (attr != NULL) | |
19662 | { | |
e61108c9 TT |
19663 | str = attr->value_as_string (); |
19664 | if (str == nullptr) | |
b98664d3 | 19665 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19666 | "DIE at %s in module %s"), |
19667 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 19668 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
19669 | } |
19670 | ||
19671 | return str; | |
19672 | } | |
19673 | ||
a084a2a6 | 19674 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19675 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19676 | static const char * |
19677 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19678 | { | |
19679 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19680 | if (dwo_name == nullptr) | |
19681 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19682 | return dwo_name; | |
19683 | } | |
19684 | ||
05cf31d1 JB |
19685 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19686 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19687 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19688 | |
19689 | static int | |
19690 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19691 | { | |
19692 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19693 | ||
19694 | return (attr && DW_UNSND (attr)); | |
19695 | } | |
19696 | ||
3ca72b44 | 19697 | static int |
e142c38c | 19698 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19699 | { |
05cf31d1 JB |
19700 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19701 | which value is non-zero. However, we have to be careful with | |
19702 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19703 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19704 | end up accidently finding a declaration attribute that belongs | |
19705 | to a different DIE referenced by the specification attribute, | |
19706 | even though the given DIE does not have a declaration attribute. */ | |
19707 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19708 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19709 | } |
19710 | ||
63d06c5c | 19711 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19712 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19713 | containing the return value on output. If there is no |
19714 | specification, but there is an abstract origin, that is | |
19715 | returned. */ | |
63d06c5c DC |
19716 | |
19717 | static struct die_info * | |
f2f0e013 | 19718 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19719 | { |
f2f0e013 DJ |
19720 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19721 | *spec_cu); | |
63d06c5c | 19722 | |
edb3359d DJ |
19723 | if (spec_attr == NULL) |
19724 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19725 | ||
63d06c5c DC |
19726 | if (spec_attr == NULL) |
19727 | return NULL; | |
19728 | else | |
f2f0e013 | 19729 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19730 | } |
c906108c | 19731 | |
527f3840 JK |
19732 | /* Stub for free_line_header to match void * callback types. */ |
19733 | ||
19734 | static void | |
19735 | free_line_header_voidp (void *arg) | |
19736 | { | |
9a3c8263 | 19737 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19738 | |
fff8551c | 19739 | delete lh; |
527f3840 JK |
19740 | } |
19741 | ||
83769d0b | 19742 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19743 | |
19744 | static struct dwarf2_section_info * | |
19745 | get_debug_line_section (struct dwarf2_cu *cu) | |
19746 | { | |
19747 | struct dwarf2_section_info *section; | |
5e22e966 | 19748 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
36586728 TT |
19749 | |
19750 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19751 | DWO file. */ | |
19752 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19753 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19754 | else if (cu->per_cu->is_dwz) | |
19755 | { | |
c3699833 | 19756 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
36586728 TT |
19757 | |
19758 | section = &dwz->line; | |
19759 | } | |
19760 | else | |
5989a64e | 19761 | section = &dwarf2_per_objfile->per_bfd->line; |
36586728 TT |
19762 | |
19763 | return section; | |
19764 | } | |
19765 | ||
debd256d | 19766 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19767 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19768 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19769 | Returns NULL if there is a problem reading the header, e.g., if it |
19770 | has a version we don't understand. | |
debd256d JB |
19771 | |
19772 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19773 | the returned object point into the dwarf line section buffer, |
19774 | and must not be freed. */ | |
ae2de4f8 | 19775 | |
fff8551c | 19776 | static line_header_up |
9c541725 | 19777 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19778 | { |
3019eac3 | 19779 | struct dwarf2_section_info *section; |
5e22e966 | 19780 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19781 | |
36586728 | 19782 | section = get_debug_line_section (cu); |
96b79293 | 19783 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19784 | if (section->buffer == NULL) |
debd256d | 19785 | { |
3019eac3 | 19786 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19787 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19788 | else |
b98664d3 | 19789 | complaint (_("missing .debug_line section")); |
debd256d JB |
19790 | return 0; |
19791 | } | |
19792 | ||
0df7ad3a TT |
19793 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19794 | dwarf2_per_objfile, section, | |
19795 | &cu->header); | |
debd256d | 19796 | } |
c906108c | 19797 | |
c6da4cef | 19798 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19799 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19800 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19801 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19802 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19803 | |
d521ce57 | 19804 | static const char * |
7ba99d21 | 19805 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19806 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19807 | const char *comp_dir, |
19808 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19809 | { |
d521ce57 TT |
19810 | const char *include_name = fe.name; |
19811 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19812 | const char *pst_filename; |
c6da4cef DE |
19813 | int file_is_pst; |
19814 | ||
8c43009f | 19815 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19816 | |
c89b44cd | 19817 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19818 | if (!IS_ABSOLUTE_PATH (include_name) |
19819 | && (dir_name != NULL || comp_dir != NULL)) | |
19820 | { | |
19821 | /* Avoid creating a duplicate psymtab for PST. | |
19822 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19823 | Before we do the comparison, however, we need to account | |
19824 | for DIR_NAME and COMP_DIR. | |
19825 | First prepend dir_name (if non-NULL). If we still don't | |
19826 | have an absolute path prepend comp_dir (if non-NULL). | |
19827 | However, the directory we record in the include-file's | |
19828 | psymtab does not contain COMP_DIR (to match the | |
19829 | corresponding symtab(s)). | |
19830 | ||
19831 | Example: | |
19832 | ||
19833 | bash$ cd /tmp | |
19834 | bash$ gcc -g ./hello.c | |
19835 | include_name = "hello.c" | |
19836 | dir_name = "." | |
19837 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19838 | DW_AT_name = "./hello.c" |
19839 | ||
19840 | */ | |
c6da4cef DE |
19841 | |
19842 | if (dir_name != NULL) | |
19843 | { | |
c89b44cd TT |
19844 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19845 | include_name, (char *) NULL)); | |
19846 | include_name = name_holder->get (); | |
c6da4cef | 19847 | include_name_to_compare = include_name; |
c6da4cef DE |
19848 | } |
19849 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19850 | { | |
c89b44cd TT |
19851 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19852 | include_name, (char *) NULL)); | |
19853 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19854 | } |
19855 | } | |
19856 | ||
19857 | pst_filename = pst->filename; | |
c89b44cd | 19858 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19859 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19860 | { | |
c89b44cd TT |
19861 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19862 | pst_filename, (char *) NULL)); | |
19863 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19864 | } |
19865 | ||
1e3fad37 | 19866 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19867 | |
c6da4cef DE |
19868 | if (file_is_pst) |
19869 | return NULL; | |
19870 | return include_name; | |
19871 | } | |
19872 | ||
d9b3de22 DE |
19873 | /* State machine to track the state of the line number program. */ |
19874 | ||
6f77053d | 19875 | class lnp_state_machine |
d9b3de22 | 19876 | { |
6f77053d PA |
19877 | public: |
19878 | /* Initialize a machine state for the start of a line number | |
19879 | program. */ | |
804d2729 TT |
19880 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19881 | bool record_lines_p); | |
6f77053d | 19882 | |
8c43009f PA |
19883 | file_entry *current_file () |
19884 | { | |
19885 | /* lh->file_names is 0-based, but the file name numbers in the | |
19886 | statement program are 1-based. */ | |
6f77053d PA |
19887 | return m_line_header->file_name_at (m_file); |
19888 | } | |
19889 | ||
19890 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19891 | we're processing the end of a sequence. */ | |
19892 | void record_line (bool end_sequence); | |
19893 | ||
7ab6656f OJ |
19894 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19895 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19896 | void check_line_address (struct dwarf2_cu *cu, |
19897 | const gdb_byte *line_ptr, | |
7ab6656f | 19898 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19899 | |
19900 | void handle_set_discriminator (unsigned int discriminator) | |
19901 | { | |
19902 | m_discriminator = discriminator; | |
19903 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19904 | } | |
19905 | ||
19906 | /* Handle DW_LNE_set_address. */ | |
19907 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19908 | { | |
19909 | m_op_index = 0; | |
19910 | address += baseaddr; | |
19911 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19912 | } | |
19913 | ||
19914 | /* Handle DW_LNS_advance_pc. */ | |
19915 | void handle_advance_pc (CORE_ADDR adjust); | |
19916 | ||
19917 | /* Handle a special opcode. */ | |
19918 | void handle_special_opcode (unsigned char op_code); | |
19919 | ||
19920 | /* Handle DW_LNS_advance_line. */ | |
19921 | void handle_advance_line (int line_delta) | |
19922 | { | |
19923 | advance_line (line_delta); | |
19924 | } | |
19925 | ||
19926 | /* Handle DW_LNS_set_file. */ | |
19927 | void handle_set_file (file_name_index file); | |
19928 | ||
19929 | /* Handle DW_LNS_negate_stmt. */ | |
19930 | void handle_negate_stmt () | |
19931 | { | |
19932 | m_is_stmt = !m_is_stmt; | |
19933 | } | |
19934 | ||
19935 | /* Handle DW_LNS_const_add_pc. */ | |
19936 | void handle_const_add_pc (); | |
19937 | ||
19938 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19939 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19940 | { | |
19941 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19942 | m_op_index = 0; | |
19943 | } | |
19944 | ||
19945 | /* Handle DW_LNS_copy. */ | |
19946 | void handle_copy () | |
19947 | { | |
19948 | record_line (false); | |
19949 | m_discriminator = 0; | |
19950 | } | |
19951 | ||
19952 | /* Handle DW_LNE_end_sequence. */ | |
19953 | void handle_end_sequence () | |
19954 | { | |
804d2729 | 19955 | m_currently_recording_lines = true; |
6f77053d PA |
19956 | } |
19957 | ||
19958 | private: | |
19959 | /* Advance the line by LINE_DELTA. */ | |
19960 | void advance_line (int line_delta) | |
19961 | { | |
19962 | m_line += line_delta; | |
19963 | ||
19964 | if (line_delta != 0) | |
19965 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19966 | } |
19967 | ||
804d2729 TT |
19968 | struct dwarf2_cu *m_cu; |
19969 | ||
6f77053d PA |
19970 | gdbarch *m_gdbarch; |
19971 | ||
19972 | /* True if we're recording lines. | |
19973 | Otherwise we're building partial symtabs and are just interested in | |
19974 | finding include files mentioned by the line number program. */ | |
19975 | bool m_record_lines_p; | |
19976 | ||
8c43009f | 19977 | /* The line number header. */ |
6f77053d | 19978 | line_header *m_line_header; |
8c43009f | 19979 | |
6f77053d PA |
19980 | /* These are part of the standard DWARF line number state machine, |
19981 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19982 | |
6f77053d | 19983 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19984 | /* The line table index of the current file. */ |
19985 | file_name_index m_file = 1; | |
6f77053d PA |
19986 | unsigned int m_line = 1; |
19987 | ||
19988 | /* These are initialized in the constructor. */ | |
19989 | ||
19990 | CORE_ADDR m_address; | |
19991 | bool m_is_stmt; | |
19992 | unsigned int m_discriminator; | |
d9b3de22 DE |
19993 | |
19994 | /* Additional bits of state we need to track. */ | |
19995 | ||
19996 | /* The last file that we called dwarf2_start_subfile for. | |
19997 | This is only used for TLLs. */ | |
6f77053d | 19998 | unsigned int m_last_file = 0; |
d9b3de22 | 19999 | /* The last file a line number was recorded for. */ |
6f77053d | 20000 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20001 | |
804d2729 TT |
20002 | /* When true, record the lines we decode. */ |
20003 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20004 | |
20005 | /* The last line number that was recorded, used to coalesce | |
20006 | consecutive entries for the same line. This can happen, for | |
20007 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20008 | unsigned int m_last_line = 0; |
20009 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20010 | }; |
d9b3de22 | 20011 | |
6f77053d PA |
20012 | void |
20013 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20014 | { | |
20015 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20016 | / m_line_header->maximum_ops_per_instruction) | |
20017 | * m_line_header->minimum_instruction_length); | |
20018 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20019 | m_op_index = ((m_op_index + adjust) | |
20020 | % m_line_header->maximum_ops_per_instruction); | |
20021 | } | |
d9b3de22 | 20022 | |
6f77053d PA |
20023 | void |
20024 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20025 | { |
6f77053d | 20026 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20027 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20028 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20029 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20030 | / m_line_header->maximum_ops_per_instruction) |
20031 | * m_line_header->minimum_instruction_length); | |
20032 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20033 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20034 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20035 | |
258bf0ee | 20036 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20037 | advance_line (line_delta); |
20038 | record_line (false); | |
20039 | m_discriminator = 0; | |
20040 | } | |
d9b3de22 | 20041 | |
6f77053d PA |
20042 | void |
20043 | lnp_state_machine::handle_set_file (file_name_index file) | |
20044 | { | |
20045 | m_file = file; | |
20046 | ||
20047 | const file_entry *fe = current_file (); | |
20048 | if (fe == NULL) | |
20049 | dwarf2_debug_line_missing_file_complaint (); | |
20050 | else if (m_record_lines_p) | |
20051 | { | |
20052 | const char *dir = fe->include_dir (m_line_header); | |
20053 | ||
c24bdb02 | 20054 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20055 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20056 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20057 | } |
20058 | } | |
20059 | ||
20060 | void | |
20061 | lnp_state_machine::handle_const_add_pc () | |
20062 | { | |
20063 | CORE_ADDR adjust | |
20064 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20065 | ||
20066 | CORE_ADDR addr_adj | |
20067 | = (((m_op_index + adjust) | |
20068 | / m_line_header->maximum_ops_per_instruction) | |
20069 | * m_line_header->minimum_instruction_length); | |
20070 | ||
20071 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20072 | m_op_index = ((m_op_index + adjust) | |
20073 | % m_line_header->maximum_ops_per_instruction); | |
20074 | } | |
d9b3de22 | 20075 | |
a05a36a5 DE |
20076 | /* Return non-zero if we should add LINE to the line number table. |
20077 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20078 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20079 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20080 | had a non-zero discriminator. | |
20081 | ||
20082 | We have to be careful in the presence of discriminators. | |
20083 | E.g., for this line: | |
20084 | ||
20085 | for (i = 0; i < 100000; i++); | |
20086 | ||
20087 | clang can emit four line number entries for that one line, | |
20088 | each with a different discriminator. | |
20089 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20090 | ||
20091 | However, we want gdb to coalesce all four entries into one. | |
20092 | Otherwise the user could stepi into the middle of the line and | |
20093 | gdb would get confused about whether the pc really was in the | |
20094 | middle of the line. | |
20095 | ||
20096 | Things are further complicated by the fact that two consecutive | |
20097 | line number entries for the same line is a heuristic used by gcc | |
20098 | to denote the end of the prologue. So we can't just discard duplicate | |
20099 | entries, we have to be selective about it. The heuristic we use is | |
20100 | that we only collapse consecutive entries for the same line if at least | |
20101 | one of those entries has a non-zero discriminator. PR 17276. | |
20102 | ||
20103 | Note: Addresses in the line number state machine can never go backwards | |
20104 | within one sequence, thus this coalescing is ok. */ | |
20105 | ||
20106 | static int | |
804d2729 TT |
20107 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20108 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20109 | int line_has_non_zero_discriminator, |
20110 | struct subfile *last_subfile) | |
20111 | { | |
c24bdb02 | 20112 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20113 | return 1; |
20114 | if (line != last_line) | |
20115 | return 1; | |
20116 | /* Same line for the same file that we've seen already. | |
20117 | As a last check, for pr 17276, only record the line if the line | |
20118 | has never had a non-zero discriminator. */ | |
20119 | if (!line_has_non_zero_discriminator) | |
20120 | return 1; | |
20121 | return 0; | |
20122 | } | |
20123 | ||
804d2729 TT |
20124 | /* Use the CU's builder to record line number LINE beginning at |
20125 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20126 | |
20127 | static void | |
d9b3de22 | 20128 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20129 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20130 | struct dwarf2_cu *cu) |
252a6764 DE |
20131 | { |
20132 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20133 | ||
27e0867f DE |
20134 | if (dwarf_line_debug) |
20135 | { | |
20136 | fprintf_unfiltered (gdb_stdlog, | |
20137 | "Recording line %u, file %s, address %s\n", | |
20138 | line, lbasename (subfile->name), | |
20139 | paddress (gdbarch, address)); | |
20140 | } | |
20141 | ||
804d2729 | 20142 | if (cu != nullptr) |
8c95582d | 20143 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20144 | } |
20145 | ||
20146 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20147 | Mark the end of a set of line number records. | |
d9b3de22 | 20148 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20149 | If SUBFILE is NULL the request is ignored. */ |
20150 | ||
20151 | static void | |
20152 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20153 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20154 | { |
27e0867f DE |
20155 | if (subfile == NULL) |
20156 | return; | |
20157 | ||
20158 | if (dwarf_line_debug) | |
20159 | { | |
20160 | fprintf_unfiltered (gdb_stdlog, | |
20161 | "Finishing current line, file %s, address %s\n", | |
20162 | lbasename (subfile->name), | |
20163 | paddress (gdbarch, address)); | |
20164 | } | |
20165 | ||
8c95582d | 20166 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20167 | } |
20168 | ||
6f77053d PA |
20169 | void |
20170 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20171 | { |
d9b3de22 DE |
20172 | if (dwarf_line_debug) |
20173 | { | |
20174 | fprintf_unfiltered (gdb_stdlog, | |
20175 | "Processing actual line %u: file %u," | |
94a72be7 | 20176 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20177 | m_line, m_file, |
6f77053d | 20178 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20179 | m_is_stmt, m_discriminator, |
20180 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20181 | } |
20182 | ||
6f77053d | 20183 | file_entry *fe = current_file (); |
8c43009f PA |
20184 | |
20185 | if (fe == NULL) | |
d9b3de22 DE |
20186 | dwarf2_debug_line_missing_file_complaint (); |
20187 | /* For now we ignore lines not starting on an instruction boundary. | |
20188 | But not when processing end_sequence for compatibility with the | |
20189 | previous version of the code. */ | |
6f77053d | 20190 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20191 | { |
8c43009f | 20192 | fe->included_p = 1; |
8c95582d | 20193 | if (m_record_lines_p) |
d9b3de22 | 20194 | { |
c24bdb02 | 20195 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20196 | || end_sequence) |
d9b3de22 | 20197 | { |
804d2729 TT |
20198 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20199 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20200 | } |
20201 | ||
20202 | if (!end_sequence) | |
20203 | { | |
8c95582d AB |
20204 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20205 | ||
804d2729 | 20206 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20207 | m_line_has_non_zero_discriminator, |
20208 | m_last_subfile)) | |
d9b3de22 | 20209 | { |
c24bdb02 | 20210 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20211 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20212 | builder->get_current_subfile (), |
8c95582d | 20213 | m_line, m_address, is_stmt, |
804d2729 | 20214 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20215 | } |
c24bdb02 | 20216 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20217 | m_last_line = m_line; |
d9b3de22 DE |
20218 | } |
20219 | } | |
20220 | } | |
20221 | } | |
20222 | ||
804d2729 TT |
20223 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20224 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20225 | { |
804d2729 | 20226 | m_cu = cu; |
6f77053d PA |
20227 | m_gdbarch = arch; |
20228 | m_record_lines_p = record_lines_p; | |
20229 | m_line_header = lh; | |
d9b3de22 | 20230 | |
804d2729 | 20231 | m_currently_recording_lines = true; |
d9b3de22 | 20232 | |
d9b3de22 DE |
20233 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20234 | was a line entry for it so that the backend has a chance to adjust it | |
20235 | and also record it in case it needs it. This is currently used by MIPS | |
20236 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20237 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20238 | m_is_stmt = lh->default_is_stmt; | |
20239 | m_discriminator = 0; | |
252a6764 DE |
20240 | } |
20241 | ||
6f77053d PA |
20242 | void |
20243 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20244 | const gdb_byte *line_ptr, | |
7ab6656f | 20245 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20246 | { |
7ab6656f OJ |
20247 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20248 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20249 | values of zero to preserve GDB's previous behaviour which is to handle | |
20250 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20251 | |
7ab6656f | 20252 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20253 | { |
20254 | /* This line table is for a function which has been | |
20255 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20256 | ||
5e22e966 | 20257 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20258 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20259 | ||
b98664d3 | 20260 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20261 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20262 | m_currently_recording_lines = false; |
20263 | /* Note: m_currently_recording_lines is left as false until we see | |
20264 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20265 | } |
20266 | } | |
20267 | ||
f3f5162e | 20268 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20269 | Process the line number information in LH. |
20270 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20271 | program in order to set included_p for every referenced header. */ | |
debd256d | 20272 | |
c906108c | 20273 | static void |
43f3e411 DE |
20274 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20275 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20276 | { |
d521ce57 TT |
20277 | const gdb_byte *line_ptr, *extended_end; |
20278 | const gdb_byte *line_end; | |
a8c50c1f | 20279 | unsigned int bytes_read, extended_len; |
699ca60a | 20280 | unsigned char op_code, extended_op; |
e142c38c | 20281 | CORE_ADDR baseaddr; |
5e22e966 | 20282 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20283 | bfd *abfd = objfile->obfd; |
08feed99 | 20284 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20285 | /* True if we're recording line info (as opposed to building partial |
20286 | symtabs and just interested in finding include files mentioned by | |
20287 | the line number program). */ | |
20288 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20289 | |
b3b3bada | 20290 | baseaddr = objfile->text_section_offset (); |
c906108c | 20291 | |
debd256d JB |
20292 | line_ptr = lh->statement_program_start; |
20293 | line_end = lh->statement_program_end; | |
c906108c SS |
20294 | |
20295 | /* Read the statement sequences until there's nothing left. */ | |
20296 | while (line_ptr < line_end) | |
20297 | { | |
6f77053d PA |
20298 | /* The DWARF line number program state machine. Reset the state |
20299 | machine at the start of each sequence. */ | |
804d2729 | 20300 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20301 | bool end_sequence = false; |
d9b3de22 | 20302 | |
8c43009f | 20303 | if (record_lines_p) |
c906108c | 20304 | { |
8c43009f PA |
20305 | /* Start a subfile for the current file of the state |
20306 | machine. */ | |
20307 | const file_entry *fe = state_machine.current_file (); | |
20308 | ||
20309 | if (fe != NULL) | |
804d2729 | 20310 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20311 | } |
20312 | ||
a738430d | 20313 | /* Decode the table. */ |
d9b3de22 | 20314 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20315 | { |
20316 | op_code = read_1_byte (abfd, line_ptr); | |
20317 | line_ptr += 1; | |
9aa1fe7e | 20318 | |
debd256d | 20319 | if (op_code >= lh->opcode_base) |
6e70227d | 20320 | { |
8e07a239 | 20321 | /* Special opcode. */ |
6f77053d | 20322 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20323 | } |
20324 | else switch (op_code) | |
c906108c SS |
20325 | { |
20326 | case DW_LNS_extended_op: | |
3e43a32a MS |
20327 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20328 | &bytes_read); | |
473b7be6 | 20329 | line_ptr += bytes_read; |
a8c50c1f | 20330 | extended_end = line_ptr + extended_len; |
c906108c SS |
20331 | extended_op = read_1_byte (abfd, line_ptr); |
20332 | line_ptr += 1; | |
20333 | switch (extended_op) | |
20334 | { | |
20335 | case DW_LNE_end_sequence: | |
6f77053d PA |
20336 | state_machine.handle_end_sequence (); |
20337 | end_sequence = true; | |
c906108c SS |
20338 | break; |
20339 | case DW_LNE_set_address: | |
d9b3de22 DE |
20340 | { |
20341 | CORE_ADDR address | |
c8a7a66f | 20342 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20343 | line_ptr += bytes_read; |
6f77053d PA |
20344 | |
20345 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20346 | lowpc - baseaddr, address); |
6f77053d | 20347 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20348 | } |
c906108c SS |
20349 | break; |
20350 | case DW_LNE_define_file: | |
debd256d | 20351 | { |
d521ce57 | 20352 | const char *cur_file; |
ecfb656c PA |
20353 | unsigned int mod_time, length; |
20354 | dir_index dindex; | |
6e70227d | 20355 | |
3e43a32a MS |
20356 | cur_file = read_direct_string (abfd, line_ptr, |
20357 | &bytes_read); | |
debd256d | 20358 | line_ptr += bytes_read; |
ecfb656c | 20359 | dindex = (dir_index) |
debd256d JB |
20360 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20361 | line_ptr += bytes_read; | |
20362 | mod_time = | |
20363 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20364 | line_ptr += bytes_read; | |
20365 | length = | |
20366 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20367 | line_ptr += bytes_read; | |
ecfb656c | 20368 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20369 | } |
c906108c | 20370 | break; |
d0c6ba3d | 20371 | case DW_LNE_set_discriminator: |
6f77053d PA |
20372 | { |
20373 | /* The discriminator is not interesting to the | |
20374 | debugger; just ignore it. We still need to | |
20375 | check its value though: | |
20376 | if there are consecutive entries for the same | |
20377 | (non-prologue) line we want to coalesce them. | |
20378 | PR 17276. */ | |
20379 | unsigned int discr | |
20380 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20381 | line_ptr += bytes_read; | |
20382 | ||
20383 | state_machine.handle_set_discriminator (discr); | |
20384 | } | |
d0c6ba3d | 20385 | break; |
c906108c | 20386 | default: |
b98664d3 | 20387 | complaint (_("mangled .debug_line section")); |
debd256d | 20388 | return; |
c906108c | 20389 | } |
a8c50c1f DJ |
20390 | /* Make sure that we parsed the extended op correctly. If e.g. |
20391 | we expected a different address size than the producer used, | |
20392 | we may have read the wrong number of bytes. */ | |
20393 | if (line_ptr != extended_end) | |
20394 | { | |
b98664d3 | 20395 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20396 | return; |
20397 | } | |
c906108c SS |
20398 | break; |
20399 | case DW_LNS_copy: | |
6f77053d | 20400 | state_machine.handle_copy (); |
c906108c SS |
20401 | break; |
20402 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20403 | { |
20404 | CORE_ADDR adjust | |
20405 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20406 | line_ptr += bytes_read; |
6f77053d PA |
20407 | |
20408 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20409 | } |
c906108c SS |
20410 | break; |
20411 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20412 | { |
20413 | int line_delta | |
20414 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20415 | line_ptr += bytes_read; |
6f77053d PA |
20416 | |
20417 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20418 | } |
c906108c SS |
20419 | break; |
20420 | case DW_LNS_set_file: | |
d9b3de22 | 20421 | { |
6f77053d | 20422 | file_name_index file |
ecfb656c PA |
20423 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20424 | &bytes_read); | |
d9b3de22 | 20425 | line_ptr += bytes_read; |
8c43009f | 20426 | |
6f77053d | 20427 | state_machine.handle_set_file (file); |
d9b3de22 | 20428 | } |
c906108c SS |
20429 | break; |
20430 | case DW_LNS_set_column: | |
0ad93d4f | 20431 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20432 | line_ptr += bytes_read; |
20433 | break; | |
20434 | case DW_LNS_negate_stmt: | |
6f77053d | 20435 | state_machine.handle_negate_stmt (); |
c906108c SS |
20436 | break; |
20437 | case DW_LNS_set_basic_block: | |
c906108c | 20438 | break; |
c2c6d25f JM |
20439 | /* Add to the address register of the state machine the |
20440 | address increment value corresponding to special opcode | |
a738430d MK |
20441 | 255. I.e., this value is scaled by the minimum |
20442 | instruction length since special opcode 255 would have | |
b021a221 | 20443 | scaled the increment. */ |
c906108c | 20444 | case DW_LNS_const_add_pc: |
6f77053d | 20445 | state_machine.handle_const_add_pc (); |
c906108c SS |
20446 | break; |
20447 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20448 | { |
6f77053d | 20449 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20450 | line_ptr += 2; |
6f77053d PA |
20451 | |
20452 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20453 | } |
c906108c | 20454 | break; |
9aa1fe7e | 20455 | default: |
a738430d MK |
20456 | { |
20457 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20458 | int i; |
a738430d | 20459 | |
debd256d | 20460 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20461 | { |
20462 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20463 | line_ptr += bytes_read; | |
20464 | } | |
20465 | } | |
c906108c SS |
20466 | } |
20467 | } | |
d9b3de22 DE |
20468 | |
20469 | if (!end_sequence) | |
20470 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20471 | ||
20472 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20473 | in which case we still finish recording the last line). */ | |
6f77053d | 20474 | state_machine.record_line (true); |
c906108c | 20475 | } |
f3f5162e DE |
20476 | } |
20477 | ||
20478 | /* Decode the Line Number Program (LNP) for the given line_header | |
20479 | structure and CU. The actual information extracted and the type | |
20480 | of structures created from the LNP depends on the value of PST. | |
20481 | ||
20482 | 1. If PST is NULL, then this procedure uses the data from the program | |
20483 | to create all necessary symbol tables, and their linetables. | |
20484 | ||
20485 | 2. If PST is not NULL, this procedure reads the program to determine | |
20486 | the list of files included by the unit represented by PST, and | |
20487 | builds all the associated partial symbol tables. | |
20488 | ||
20489 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20490 | It is used for relative paths in the line table. | |
20491 | NOTE: When processing partial symtabs (pst != NULL), | |
20492 | comp_dir == pst->dirname. | |
20493 | ||
20494 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20495 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20496 | symtab we don't use it in the name of the psymtabs we create. | |
20497 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20498 | A good testcase for this is mb-inline.exp. |
20499 | ||
527f3840 JK |
20500 | LOWPC is the lowest address in CU (or 0 if not known). |
20501 | ||
20502 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20503 | for its PC<->lines mapping information. Otherwise only the filename | |
20504 | table is read in. */ | |
f3f5162e DE |
20505 | |
20506 | static void | |
20507 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20508 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20509 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20510 | { |
5e22e966 | 20511 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20512 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20513 | |
527f3840 JK |
20514 | if (decode_mapping) |
20515 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20516 | |
20517 | if (decode_for_pst_p) | |
20518 | { | |
aaa75496 JB |
20519 | /* Now that we're done scanning the Line Header Program, we can |
20520 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20521 | for (auto &file_entry : lh->file_names ()) |
20522 | if (file_entry.included_p == 1) | |
aaa75496 | 20523 | { |
c89b44cd | 20524 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20525 | const char *include_name = |
7ba99d21 AT |
20526 | psymtab_include_file_name (lh, file_entry, pst, |
20527 | comp_dir, &name_holder); | |
c6da4cef | 20528 | if (include_name != NULL) |
aaa75496 JB |
20529 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20530 | } | |
20531 | } | |
cb1df416 DJ |
20532 | else |
20533 | { | |
20534 | /* Make sure a symtab is created for every file, even files | |
20535 | which contain only variables (i.e. no code with associated | |
20536 | line numbers). */ | |
c24bdb02 KS |
20537 | buildsym_compunit *builder = cu->get_builder (); |
20538 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20539 | |
7ba99d21 | 20540 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20541 | { |
804d2729 | 20542 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20543 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20544 | { |
c24bdb02 | 20545 | builder->get_current_subfile ()->symtab |
804d2729 | 20546 | = allocate_symtab (cust, |
c24bdb02 | 20547 | builder->get_current_subfile ()->name); |
43f3e411 | 20548 | } |
c24bdb02 | 20549 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20550 | } |
20551 | } | |
c906108c SS |
20552 | } |
20553 | ||
20554 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20555 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20556 | or NULL if not known. |
c906108c SS |
20557 | This routine tries to keep line numbers from identical absolute and |
20558 | relative file names in a common subfile. | |
20559 | ||
20560 | Using the `list' example from the GDB testsuite, which resides in | |
20561 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20562 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20563 | ||
c5aa993b | 20564 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20565 | DW_AT_comp_dir: /compdir |
357e46e7 | 20566 | files.files[0].name: list0.h |
c5aa993b | 20567 | files.files[0].dir: /srcdir |
357e46e7 | 20568 | files.files[1].name: list0.c |
c5aa993b | 20569 | files.files[1].dir: /srcdir |
c906108c SS |
20570 | |
20571 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20572 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20573 | start_subfile will ensure that this happens provided that we pass the | |
20574 | concatenation of files.files[1].dir and files.files[1].name as the | |
20575 | subfile's name. */ | |
c906108c SS |
20576 | |
20577 | static void | |
804d2729 TT |
20578 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20579 | const char *dirname) | |
c906108c | 20580 | { |
43816ebc | 20581 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20582 | |
4d663531 | 20583 | /* In order not to lose the line information directory, |
4f1520fb FR |
20584 | we concatenate it to the filename when it makes sense. |
20585 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20586 | information): ``The directory index is ignored for file names | |
20587 | that represent full path names''. Thus ignoring dirname in the | |
20588 | `else' branch below isn't an issue. */ | |
c906108c | 20589 | |
d5166ae1 | 20590 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20591 | { |
43816ebc TT |
20592 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20593 | filename = copy.get (); | |
d521ce57 | 20594 | } |
c906108c | 20595 | |
c24bdb02 | 20596 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20597 | } |
20598 | ||
804d2729 TT |
20599 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20600 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20601 | |
c24bdb02 KS |
20602 | struct compunit_symtab * |
20603 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20604 | CORE_ADDR low_pc) | |
f4dc4d17 | 20605 | { |
c24bdb02 | 20606 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20607 | |
c24bdb02 | 20608 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 20609 | (this->per_objfile->objfile, |
c24bdb02 | 20610 | name, comp_dir, language, low_pc)); |
93b8bea4 | 20611 | |
c24bdb02 | 20612 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20613 | |
c24bdb02 KS |
20614 | get_builder ()->record_debugformat ("DWARF 2"); |
20615 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20616 | |
c24bdb02 | 20617 | processing_has_namespace_info = false; |
43f3e411 | 20618 | |
c24bdb02 | 20619 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20620 | } |
20621 | ||
4c2df51b DJ |
20622 | static void |
20623 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20624 | struct dwarf2_cu *cu) |
4c2df51b | 20625 | { |
5e22e966 | 20626 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
20627 | struct comp_unit_head *cu_header = &cu->header; |
20628 | ||
4c2df51b DJ |
20629 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20630 | code here to turn a symbol with DW_AT_external and a | |
20631 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20632 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20633 | with some versions of binutils) where shared libraries could have | |
20634 | relocations against symbols in their debug information - the | |
20635 | minimal symbol would have the right address, but the debug info | |
20636 | would not. It's no longer necessary, because we will explicitly | |
20637 | apply relocations when we read in the debug information now. */ | |
20638 | ||
20639 | /* A DW_AT_location attribute with no contents indicates that a | |
20640 | variable has been optimized away. */ | |
4fc6c0d5 | 20641 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20642 | { |
f1e6e072 | 20643 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20644 | return; |
20645 | } | |
20646 | ||
20647 | /* Handle one degenerate form of location expression specially, to | |
20648 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20649 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20650 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20651 | |
4fc6c0d5 | 20652 | if (attr->form_is_block () |
3019eac3 DE |
20653 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20654 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20655 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20656 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20657 | && (DW_BLOCK (attr)->size |
20658 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20659 | { |
891d2f0b | 20660 | unsigned int dummy; |
4c2df51b | 20661 | |
3019eac3 | 20662 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20663 | SET_SYMBOL_VALUE_ADDRESS |
20664 | (sym, cu->header.read_address (objfile->obfd, | |
20665 | DW_BLOCK (attr)->data + 1, | |
20666 | &dummy)); | |
3019eac3 | 20667 | else |
38583298 TT |
20668 | SET_SYMBOL_VALUE_ADDRESS |
20669 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20670 | &dummy)); | |
f1e6e072 | 20671 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20672 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20673 | SET_SYMBOL_VALUE_ADDRESS |
20674 | (sym, | |
20675 | SYMBOL_VALUE_ADDRESS (sym) | |
20676 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20677 | return; |
20678 | } | |
20679 | ||
20680 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20681 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20682 | (i.e. when the value of a register or memory location is | |
20683 | referenced, or a thread-local block, etc.). Then again, it might | |
20684 | not be worthwhile. I'm assuming that it isn't unless performance | |
20685 | or memory numbers show me otherwise. */ | |
20686 | ||
f1e6e072 | 20687 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20688 | |
f1e6e072 | 20689 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20690 | cu->has_loclist = true; |
4c2df51b DJ |
20691 | } |
20692 | ||
c906108c SS |
20693 | /* Given a pointer to a DWARF information entry, figure out if we need |
20694 | to make a symbol table entry for it, and if so, create a new entry | |
20695 | and return a pointer to it. | |
20696 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20697 | used the passed type. |
20698 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20699 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20700 | |
20701 | static struct symbol * | |
5e2db402 TT |
20702 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20703 | struct symbol *space) | |
c906108c | 20704 | { |
5e22e966 | 20705 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 20706 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 20707 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20708 | struct symbol *sym = NULL; |
15d034d0 | 20709 | const char *name; |
c906108c SS |
20710 | struct attribute *attr = NULL; |
20711 | struct attribute *attr2 = NULL; | |
e142c38c | 20712 | CORE_ADDR baseaddr; |
e37fd15a SW |
20713 | struct pending **list_to_add = NULL; |
20714 | ||
edb3359d | 20715 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20716 | |
b3b3bada | 20717 | baseaddr = objfile->text_section_offset (); |
c906108c | 20718 | |
94af9270 | 20719 | name = dwarf2_name (die, cu); |
c906108c SS |
20720 | if (name) |
20721 | { | |
34eaf542 | 20722 | int suppress_add = 0; |
94af9270 | 20723 | |
34eaf542 TT |
20724 | if (space) |
20725 | sym = space; | |
20726 | else | |
8c14c3a3 | 20727 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 20728 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20729 | |
20730 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20731 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
20732 | /* Fortran does not have mangling standard and the mangling does differ |
20733 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
20734 | const char *physname |
20735 | = (cu->language == language_fortran | |
20736 | ? dwarf2_full_name (name, die, cu) | |
20737 | : dwarf2_physname (name, die, cu)); | |
20738 | const char *linkagename = dw2_linkage_name (die, cu); | |
20739 | ||
20740 | if (linkagename == nullptr || cu->language == language_ada) | |
20741 | sym->set_linkage_name (physname); | |
20742 | else | |
20743 | { | |
20744 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
20745 | sym->set_linkage_name (linkagename); | |
20746 | } | |
f55ee35c | 20747 | |
c906108c | 20748 | /* Default assumptions. |
c5aa993b | 20749 | Use the passed type or decode it from the die. */ |
176620f1 | 20750 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20751 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20752 | if (type != NULL) |
20753 | SYMBOL_TYPE (sym) = type; | |
20754 | else | |
e7c27a73 | 20755 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20756 | attr = dwarf2_attr (die, |
20757 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20758 | cu); | |
435d3d88 | 20759 | if (attr != nullptr) |
c906108c SS |
20760 | { |
20761 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20762 | } | |
cb1df416 | 20763 | |
edb3359d DJ |
20764 | attr = dwarf2_attr (die, |
20765 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20766 | cu); | |
435d3d88 | 20767 | if (attr != nullptr) |
cb1df416 | 20768 | { |
ecfb656c | 20769 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20770 | struct file_entry *fe; |
9a619af0 | 20771 | |
ecfb656c PA |
20772 | if (cu->line_header != NULL) |
20773 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20774 | else |
20775 | fe = NULL; | |
20776 | ||
20777 | if (fe == NULL) | |
b98664d3 | 20778 | complaint (_("file index out of range")); |
8c43009f PA |
20779 | else |
20780 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20781 | } |
20782 | ||
c906108c SS |
20783 | switch (die->tag) |
20784 | { | |
20785 | case DW_TAG_label: | |
e142c38c | 20786 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20787 | if (attr != nullptr) |
3e29f34a MR |
20788 | { |
20789 | CORE_ADDR addr; | |
20790 | ||
cd6c91b4 | 20791 | addr = attr->value_as_address (); |
3e29f34a | 20792 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20793 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20794 | } |
0f5238ed TT |
20795 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20796 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20797 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20798 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20799 | break; |
20800 | case DW_TAG_subprogram: | |
20801 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20802 | finish_block. */ | |
f1e6e072 | 20803 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20804 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20805 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20806 | || cu->language == language_ada |
20807 | || cu->language == language_fortran) | |
c906108c | 20808 | { |
2cfa0c8d | 20809 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20810 | Ada and Fortran subprograms, whether marked external or |
20811 | not, are always stored as a global symbol, because we want | |
20812 | to be able to access them globally. For instance, we want | |
20813 | to be able to break on a nested subprogram without having | |
20814 | to specify the context. */ | |
c24bdb02 | 20815 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20816 | } |
20817 | else | |
20818 | { | |
e37fd15a | 20819 | list_to_add = cu->list_in_scope; |
c906108c SS |
20820 | } |
20821 | break; | |
edb3359d DJ |
20822 | case DW_TAG_inlined_subroutine: |
20823 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20824 | finish_block. */ | |
f1e6e072 | 20825 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20826 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20827 | list_to_add = cu->list_in_scope; |
edb3359d | 20828 | break; |
34eaf542 TT |
20829 | case DW_TAG_template_value_param: |
20830 | suppress_add = 1; | |
20831 | /* Fall through. */ | |
72929c62 | 20832 | case DW_TAG_constant: |
c906108c | 20833 | case DW_TAG_variable: |
254e6b9e | 20834 | case DW_TAG_member: |
0963b4bd MS |
20835 | /* Compilation with minimal debug info may result in |
20836 | variables with missing type entries. Change the | |
20837 | misleading `void' type to something sensible. */ | |
78134374 | 20838 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 20839 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20840 | |
e142c38c | 20841 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20842 | /* In the case of DW_TAG_member, we should only be called for |
20843 | static const members. */ | |
20844 | if (die->tag == DW_TAG_member) | |
20845 | { | |
3863f96c DE |
20846 | /* dwarf2_add_field uses die_is_declaration, |
20847 | so we do the same. */ | |
254e6b9e DE |
20848 | gdb_assert (die_is_declaration (die, cu)); |
20849 | gdb_assert (attr); | |
20850 | } | |
435d3d88 | 20851 | if (attr != nullptr) |
c906108c | 20852 | { |
e7c27a73 | 20853 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20854 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20855 | if (!suppress_add) |
34eaf542 TT |
20856 | { |
20857 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20858 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20859 | else |
e37fd15a | 20860 | list_to_add = cu->list_in_scope; |
34eaf542 | 20861 | } |
c906108c SS |
20862 | break; |
20863 | } | |
e142c38c | 20864 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20865 | if (attr != nullptr) |
c906108c | 20866 | { |
e7c27a73 | 20867 | var_decode_location (attr, sym, cu); |
e142c38c | 20868 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20869 | |
20870 | /* Fortran explicitly imports any global symbols to the local | |
20871 | scope by DW_TAG_common_block. */ | |
20872 | if (cu->language == language_fortran && die->parent | |
20873 | && die->parent->tag == DW_TAG_common_block) | |
20874 | attr2 = NULL; | |
20875 | ||
caac4577 JG |
20876 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20877 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
5989a64e | 20878 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
20879 | { |
20880 | /* When a static variable is eliminated by the linker, | |
20881 | the corresponding debug information is not stripped | |
20882 | out, but the variable address is set to null; | |
20883 | do not add such variables into symbol table. */ | |
20884 | } | |
20885 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20886 | { |
4b610737 TT |
20887 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20888 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
5989a64e | 20889 | && dwarf2_per_objfile->per_bfd->can_copy) |
4b610737 TT |
20890 | { |
20891 | /* A global static variable might be subject to | |
20892 | copy relocation. We first check for a local | |
20893 | minsym, though, because maybe the symbol was | |
20894 | marked hidden, in which case this would not | |
20895 | apply. */ | |
20896 | bound_minimal_symbol found | |
20897 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20898 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20899 | if (found.minsym != nullptr) |
20900 | sym->maybe_copied = 1; | |
20901 | } | |
f55ee35c | 20902 | |
1c809c68 TT |
20903 | /* A variable with DW_AT_external is never static, |
20904 | but it may be block-scoped. */ | |
804d2729 | 20905 | list_to_add |
c24bdb02 KS |
20906 | = ((cu->list_in_scope |
20907 | == cu->get_builder ()->get_file_symbols ()) | |
20908 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20909 | : cu->list_in_scope); |
1c809c68 | 20910 | } |
c906108c | 20911 | else |
e37fd15a | 20912 | list_to_add = cu->list_in_scope; |
c906108c SS |
20913 | } |
20914 | else | |
20915 | { | |
20916 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20917 | If it is an external symbol and we have type information |
20918 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20919 | The address of the variable will then be determined from | |
20920 | the minimal symbol table whenever the variable is | |
20921 | referenced. */ | |
e142c38c | 20922 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20923 | |
20924 | /* Fortran explicitly imports any global symbols to the local | |
20925 | scope by DW_TAG_common_block. */ | |
20926 | if (cu->language == language_fortran && die->parent | |
20927 | && die->parent->tag == DW_TAG_common_block) | |
20928 | { | |
20929 | /* SYMBOL_CLASS doesn't matter here because | |
20930 | read_common_block is going to reset it. */ | |
20931 | if (!suppress_add) | |
20932 | list_to_add = cu->list_in_scope; | |
20933 | } | |
20934 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20935 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20936 | { |
0fe7935b DJ |
20937 | /* A variable with DW_AT_external is never static, but it |
20938 | may be block-scoped. */ | |
804d2729 | 20939 | list_to_add |
c24bdb02 KS |
20940 | = ((cu->list_in_scope |
20941 | == cu->get_builder ()->get_file_symbols ()) | |
20942 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20943 | : cu->list_in_scope); |
0fe7935b | 20944 | |
f1e6e072 | 20945 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20946 | } |
442ddf59 JK |
20947 | else if (!die_is_declaration (die, cu)) |
20948 | { | |
20949 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20950 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20951 | if (!suppress_add) |
20952 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20953 | } |
c906108c SS |
20954 | } |
20955 | break; | |
20956 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20957 | { |
20958 | /* If we are inside a function, mark this as an argument. If | |
20959 | not, we might be looking at an argument to an inlined function | |
20960 | when we do not have enough information to show inlined frames; | |
20961 | pretend it's a local variable in that case so that the user can | |
20962 | still see it. */ | |
804d2729 | 20963 | struct context_stack *curr |
c24bdb02 | 20964 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20965 | if (curr != nullptr && curr->name != nullptr) |
20966 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20967 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20968 | if (attr != nullptr) |
a60f3166 TT |
20969 | { |
20970 | var_decode_location (attr, sym, cu); | |
20971 | } | |
20972 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20973 | if (attr != nullptr) |
a60f3166 TT |
20974 | { |
20975 | dwarf2_const_value (attr, sym, cu); | |
20976 | } | |
f346a30d | 20977 | |
a60f3166 TT |
20978 | list_to_add = cu->list_in_scope; |
20979 | } | |
c906108c SS |
20980 | break; |
20981 | case DW_TAG_unspecified_parameters: | |
20982 | /* From varargs functions; gdb doesn't seem to have any | |
20983 | interest in this information, so just ignore it for now. | |
20984 | (FIXME?) */ | |
20985 | break; | |
34eaf542 TT |
20986 | case DW_TAG_template_type_param: |
20987 | suppress_add = 1; | |
20988 | /* Fall through. */ | |
c906108c | 20989 | case DW_TAG_class_type: |
680b30c7 | 20990 | case DW_TAG_interface_type: |
c906108c SS |
20991 | case DW_TAG_structure_type: |
20992 | case DW_TAG_union_type: | |
72019c9c | 20993 | case DW_TAG_set_type: |
c906108c | 20994 | case DW_TAG_enumeration_type: |
f1e6e072 | 20995 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20996 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20997 | |
63d06c5c | 20998 | { |
9c37b5ae | 20999 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21000 | really ever be static objects: otherwise, if you try |
21001 | to, say, break of a class's method and you're in a file | |
21002 | which doesn't mention that class, it won't work unless | |
21003 | the check for all static symbols in lookup_symbol_aux | |
21004 | saves you. See the OtherFileClass tests in | |
21005 | gdb.c++/namespace.exp. */ | |
21006 | ||
e37fd15a | 21007 | if (!suppress_add) |
34eaf542 | 21008 | { |
c24bdb02 | 21009 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21010 | list_to_add |
c24bdb02 | 21011 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21012 | && cu->language == language_cplus |
c24bdb02 | 21013 | ? builder->get_global_symbols () |
804d2729 | 21014 | : cu->list_in_scope); |
63d06c5c | 21015 | |
64382290 | 21016 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21017 | ... }" also defines a typedef for "foo". */ |
64382290 | 21018 | if (cu->language == language_cplus |
45280282 | 21019 | || cu->language == language_ada |
c44af4eb TT |
21020 | || cu->language == language_d |
21021 | || cu->language == language_rust) | |
64382290 TT |
21022 | { |
21023 | /* The symbol's name is already allocated along | |
21024 | with this objfile, so we don't need to | |
21025 | duplicate it for the type. */ | |
7d93a1e0 | 21026 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21027 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21028 | } |
63d06c5c DC |
21029 | } |
21030 | } | |
c906108c SS |
21031 | break; |
21032 | case DW_TAG_typedef: | |
f1e6e072 | 21033 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21034 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21035 | list_to_add = cu->list_in_scope; |
63d06c5c | 21036 | break; |
c906108c | 21037 | case DW_TAG_base_type: |
a02abb62 | 21038 | case DW_TAG_subrange_type: |
f1e6e072 | 21039 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21040 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21041 | list_to_add = cu->list_in_scope; |
c906108c SS |
21042 | break; |
21043 | case DW_TAG_enumerator: | |
e142c38c | 21044 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21045 | if (attr != nullptr) |
c906108c | 21046 | { |
e7c27a73 | 21047 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21048 | } |
63d06c5c DC |
21049 | { |
21050 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21051 | DW_TAG_class_type, etc. block. */ | |
21052 | ||
804d2729 | 21053 | list_to_add |
c24bdb02 | 21054 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21055 | && cu->language == language_cplus |
c24bdb02 | 21056 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21057 | : cu->list_in_scope); |
63d06c5c | 21058 | } |
c906108c | 21059 | break; |
74921315 | 21060 | case DW_TAG_imported_declaration: |
5c4e30ca | 21061 | case DW_TAG_namespace: |
f1e6e072 | 21062 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21063 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21064 | break; |
530e8392 KB |
21065 | case DW_TAG_module: |
21066 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21067 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21068 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21069 | break; |
4357ac6c | 21070 | case DW_TAG_common_block: |
f1e6e072 | 21071 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21072 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21073 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21074 | break; |
c906108c SS |
21075 | default: |
21076 | /* Not a tag we recognize. Hopefully we aren't processing | |
21077 | trash data, but since we must specifically ignore things | |
21078 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21079 | this point. */ |
b98664d3 | 21080 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21081 | dwarf_tag_name (die->tag)); |
c906108c SS |
21082 | break; |
21083 | } | |
df8a16a1 | 21084 | |
e37fd15a SW |
21085 | if (suppress_add) |
21086 | { | |
21087 | sym->hash_next = objfile->template_symbols; | |
21088 | objfile->template_symbols = sym; | |
21089 | list_to_add = NULL; | |
21090 | } | |
21091 | ||
21092 | if (list_to_add != NULL) | |
d3cb6808 | 21093 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21094 | |
df8a16a1 DJ |
21095 | /* For the benefit of old versions of GCC, check for anonymous |
21096 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21097 | if (!cu->processing_has_namespace_info |
94af9270 | 21098 | && cu->language == language_cplus) |
c24bdb02 | 21099 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21100 | } |
21101 | return (sym); | |
21102 | } | |
21103 | ||
98bfdba5 PA |
21104 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21105 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21106 | standard (v4) is not entirely clear about the meaning of using | |
21107 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21108 | wider than the data. The conclusion of a discussion on the DWARF | |
21109 | list was that this is unspecified. We choose to always zero-extend | |
21110 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21111 | |
98bfdba5 | 21112 | static gdb_byte * |
ff39bb5e | 21113 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21114 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21115 | { |
5e22e966 | 21116 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21117 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21118 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21119 | LONGEST l = DW_UNSND (attr); |
21120 | ||
21121 | if (bits < sizeof (*value) * 8) | |
21122 | { | |
21123 | l &= ((LONGEST) 1 << bits) - 1; | |
21124 | *value = l; | |
21125 | } | |
21126 | else if (bits == sizeof (*value) * 8) | |
21127 | *value = l; | |
21128 | else | |
21129 | { | |
224c3ddb | 21130 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21131 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21132 | return bytes; | |
21133 | } | |
21134 | ||
21135 | return NULL; | |
21136 | } | |
21137 | ||
21138 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21139 | the value does not fit in *VALUE, set *BYTES - either already | |
21140 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21141 | or, set *BATON, if we translated the constant to a location | |
21142 | expression. */ | |
21143 | ||
21144 | static void | |
ff39bb5e | 21145 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21146 | const char *name, struct obstack *obstack, |
21147 | struct dwarf2_cu *cu, | |
d521ce57 | 21148 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21149 | struct dwarf2_locexpr_baton **baton) |
21150 | { | |
5e22e966 | 21151 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21152 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21153 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21154 | struct dwarf_block *blk; |
98bfdba5 PA |
21155 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21156 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21157 | ||
21158 | *value = 0; | |
21159 | *bytes = NULL; | |
21160 | *baton = NULL; | |
c906108c SS |
21161 | |
21162 | switch (attr->form) | |
21163 | { | |
21164 | case DW_FORM_addr: | |
336d760d | 21165 | case DW_FORM_addrx: |
3019eac3 | 21166 | case DW_FORM_GNU_addr_index: |
ac56253d | 21167 | { |
ac56253d TT |
21168 | gdb_byte *data; |
21169 | ||
98bfdba5 PA |
21170 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21171 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21172 | cu_header->addr_size, |
98bfdba5 | 21173 | TYPE_LENGTH (type)); |
ac56253d TT |
21174 | /* Symbols of this form are reasonably rare, so we just |
21175 | piggyback on the existing location code rather than writing | |
21176 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21177 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21178 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21179 | (*baton)->per_cu = cu->per_cu; |
21180 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21181 | |
98bfdba5 | 21182 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21183 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21184 | (*baton)->data = data; |
ac56253d TT |
21185 | |
21186 | data[0] = DW_OP_addr; | |
21187 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21188 | byte_order, DW_ADDR (attr)); | |
21189 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21190 | } |
c906108c | 21191 | break; |
4ac36638 | 21192 | case DW_FORM_string: |
93b5768b | 21193 | case DW_FORM_strp: |
cf532bd1 | 21194 | case DW_FORM_strx: |
3019eac3 | 21195 | case DW_FORM_GNU_str_index: |
36586728 | 21196 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21197 | /* DW_STRING is already allocated on the objfile obstack, point |
21198 | directly to it. */ | |
d521ce57 | 21199 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21200 | break; |
c906108c SS |
21201 | case DW_FORM_block1: |
21202 | case DW_FORM_block2: | |
21203 | case DW_FORM_block4: | |
21204 | case DW_FORM_block: | |
2dc7f7b3 | 21205 | case DW_FORM_exprloc: |
0224619f | 21206 | case DW_FORM_data16: |
c906108c | 21207 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21208 | if (TYPE_LENGTH (type) != blk->size) |
21209 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21210 | TYPE_LENGTH (type)); | |
21211 | *bytes = blk->data; | |
c906108c | 21212 | break; |
2df3850c JM |
21213 | |
21214 | /* The DW_AT_const_value attributes are supposed to carry the | |
21215 | symbol's value "represented as it would be on the target | |
21216 | architecture." By the time we get here, it's already been | |
21217 | converted to host endianness, so we just need to sign- or | |
21218 | zero-extend it as appropriate. */ | |
21219 | case DW_FORM_data1: | |
3aef2284 | 21220 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21221 | break; |
c906108c | 21222 | case DW_FORM_data2: |
3aef2284 | 21223 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21224 | break; |
c906108c | 21225 | case DW_FORM_data4: |
3aef2284 | 21226 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21227 | break; |
c906108c | 21228 | case DW_FORM_data8: |
3aef2284 | 21229 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21230 | break; |
21231 | ||
c906108c | 21232 | case DW_FORM_sdata: |
663c44ac | 21233 | case DW_FORM_implicit_const: |
98bfdba5 | 21234 | *value = DW_SND (attr); |
2df3850c JM |
21235 | break; |
21236 | ||
c906108c | 21237 | case DW_FORM_udata: |
98bfdba5 | 21238 | *value = DW_UNSND (attr); |
c906108c | 21239 | break; |
2df3850c | 21240 | |
c906108c | 21241 | default: |
b98664d3 | 21242 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21243 | dwarf_form_name (attr->form)); |
98bfdba5 | 21244 | *value = 0; |
c906108c SS |
21245 | break; |
21246 | } | |
21247 | } | |
21248 | ||
2df3850c | 21249 | |
98bfdba5 PA |
21250 | /* Copy constant value from an attribute to a symbol. */ |
21251 | ||
2df3850c | 21252 | static void |
ff39bb5e | 21253 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21254 | struct dwarf2_cu *cu) |
2df3850c | 21255 | { |
5e22e966 | 21256 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21257 | LONGEST value; |
d521ce57 | 21258 | const gdb_byte *bytes; |
98bfdba5 | 21259 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21260 | |
98bfdba5 | 21261 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21262 | sym->print_name (), |
98bfdba5 PA |
21263 | &objfile->objfile_obstack, cu, |
21264 | &value, &bytes, &baton); | |
2df3850c | 21265 | |
98bfdba5 PA |
21266 | if (baton != NULL) |
21267 | { | |
98bfdba5 | 21268 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21269 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21270 | } |
21271 | else if (bytes != NULL) | |
21272 | { | |
21273 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21274 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21275 | } |
21276 | else | |
21277 | { | |
21278 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21279 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21280 | } |
2df3850c JM |
21281 | } |
21282 | ||
c906108c SS |
21283 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21284 | ||
21285 | static struct type * | |
e7c27a73 | 21286 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21287 | { |
c906108c | 21288 | struct attribute *type_attr; |
c906108c | 21289 | |
e142c38c | 21290 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21291 | if (!type_attr) |
21292 | { | |
5e22e966 | 21293 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21294 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21295 | return objfile_type (objfile)->builtin_void; |
c906108c | 21296 | } |
348e048f | 21297 | |
673bfd45 | 21298 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21299 | } |
21300 | ||
b4ba55a1 JB |
21301 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21302 | that allows to find parallel types through that information instead | |
21303 | of having to do expensive parallel lookups by type name. */ | |
21304 | ||
21305 | static int | |
21306 | need_gnat_info (struct dwarf2_cu *cu) | |
21307 | { | |
de4cb04a JB |
21308 | /* Assume that the Ada compiler was GNAT, which always produces |
21309 | the auxiliary information. */ | |
21310 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21311 | } |
21312 | ||
b4ba55a1 JB |
21313 | /* Return the auxiliary type of the die in question using its |
21314 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21315 | attribute is not present. */ | |
21316 | ||
21317 | static struct type * | |
21318 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21319 | { | |
b4ba55a1 | 21320 | struct attribute *type_attr; |
b4ba55a1 JB |
21321 | |
21322 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21323 | if (!type_attr) | |
21324 | return NULL; | |
21325 | ||
673bfd45 | 21326 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21327 | } |
21328 | ||
21329 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21330 | descriptive type accordingly. */ | |
21331 | ||
21332 | static void | |
21333 | set_descriptive_type (struct type *type, struct die_info *die, | |
21334 | struct dwarf2_cu *cu) | |
21335 | { | |
21336 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21337 | ||
21338 | if (descriptive_type) | |
21339 | { | |
21340 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21341 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21342 | } | |
21343 | } | |
21344 | ||
c906108c SS |
21345 | /* Return the containing type of the die in question using its |
21346 | DW_AT_containing_type attribute. */ | |
21347 | ||
21348 | static struct type * | |
e7c27a73 | 21349 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21350 | { |
c906108c | 21351 | struct attribute *type_attr; |
5e22e966 | 21352 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21353 | |
e142c38c | 21354 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21355 | if (!type_attr) |
21356 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21357 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21358 | |
673bfd45 | 21359 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21360 | } |
21361 | ||
ac9ec31b DE |
21362 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21363 | ||
21364 | static struct type * | |
21365 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21366 | { | |
5e22e966 | 21367 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b | 21368 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21369 | char *saved; |
ac9ec31b | 21370 | |
528e1572 SM |
21371 | std::string message |
21372 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21373 | objfile_name (objfile), | |
21374 | sect_offset_str (cu->header.sect_off), | |
21375 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21376 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21377 | |
19f392bc | 21378 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21379 | } |
21380 | ||
673bfd45 | 21381 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21382 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21383 | DW_AT_containing_type. | |
673bfd45 DE |
21384 | If there is no type substitute an error marker. */ |
21385 | ||
c906108c | 21386 | static struct type * |
ff39bb5e | 21387 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21388 | struct dwarf2_cu *cu) |
c906108c | 21389 | { |
5e22e966 | 21390 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 21391 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21392 | struct type *this_type; |
21393 | ||
ac9ec31b DE |
21394 | gdb_assert (attr->name == DW_AT_type |
21395 | || attr->name == DW_AT_GNAT_descriptive_type | |
21396 | || attr->name == DW_AT_containing_type); | |
21397 | ||
673bfd45 DE |
21398 | /* First see if we have it cached. */ |
21399 | ||
36586728 TT |
21400 | if (attr->form == DW_FORM_GNU_ref_alt) |
21401 | { | |
21402 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21403 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21404 | |
ed2dc618 SM |
21405 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21406 | dwarf2_per_objfile); | |
aa66c379 | 21407 | this_type = get_die_type_at_offset (sect_off, per_cu, dwarf2_per_objfile); |
36586728 | 21408 | } |
cd6c91b4 | 21409 | else if (attr->form_is_ref ()) |
673bfd45 | 21410 | { |
0826b30a | 21411 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21412 | |
aa66c379 SM |
21413 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, |
21414 | dwarf2_per_objfile); | |
673bfd45 | 21415 | } |
55f1336d | 21416 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21417 | { |
ac9ec31b | 21418 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21419 | |
ac9ec31b | 21420 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21421 | } |
21422 | else | |
21423 | { | |
b98664d3 | 21424 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21425 | " at %s [in module %s]"), |
21426 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21427 | objfile_name (objfile)); |
ac9ec31b | 21428 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21429 | } |
21430 | ||
21431 | /* If not cached we need to read it in. */ | |
21432 | ||
21433 | if (this_type == NULL) | |
21434 | { | |
ac9ec31b | 21435 | struct die_info *type_die = NULL; |
673bfd45 DE |
21436 | struct dwarf2_cu *type_cu = cu; |
21437 | ||
cd6c91b4 | 21438 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21439 | type_die = follow_die_ref (die, attr, &type_cu); |
21440 | if (type_die == NULL) | |
21441 | return build_error_marker_type (cu, die); | |
21442 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21443 | from an inter-CU reference and the type's CU got expanded before |
21444 | ours. */ | |
ac9ec31b | 21445 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21446 | } |
21447 | ||
21448 | /* If we still don't have a type use an error marker. */ | |
21449 | ||
21450 | if (this_type == NULL) | |
ac9ec31b | 21451 | return build_error_marker_type (cu, die); |
673bfd45 | 21452 | |
f792889a | 21453 | return this_type; |
c906108c SS |
21454 | } |
21455 | ||
673bfd45 DE |
21456 | /* Return the type in DIE, CU. |
21457 | Returns NULL for invalid types. | |
21458 | ||
02142a6c | 21459 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21460 | and only reads the die in if necessary. |
21461 | ||
21462 | NOTE: This can be called when reading in partial or full symbols. */ | |
21463 | ||
f792889a | 21464 | static struct type * |
e7c27a73 | 21465 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21466 | { |
f792889a DJ |
21467 | struct type *this_type; |
21468 | ||
21469 | this_type = get_die_type (die, cu); | |
21470 | if (this_type) | |
21471 | return this_type; | |
21472 | ||
673bfd45 DE |
21473 | return read_type_die_1 (die, cu); |
21474 | } | |
21475 | ||
21476 | /* Read the type in DIE, CU. | |
21477 | Returns NULL for invalid types. */ | |
21478 | ||
21479 | static struct type * | |
21480 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21481 | { | |
21482 | struct type *this_type = NULL; | |
21483 | ||
c906108c SS |
21484 | switch (die->tag) |
21485 | { | |
21486 | case DW_TAG_class_type: | |
680b30c7 | 21487 | case DW_TAG_interface_type: |
c906108c SS |
21488 | case DW_TAG_structure_type: |
21489 | case DW_TAG_union_type: | |
f792889a | 21490 | this_type = read_structure_type (die, cu); |
c906108c SS |
21491 | break; |
21492 | case DW_TAG_enumeration_type: | |
f792889a | 21493 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21494 | break; |
21495 | case DW_TAG_subprogram: | |
21496 | case DW_TAG_subroutine_type: | |
edb3359d | 21497 | case DW_TAG_inlined_subroutine: |
f792889a | 21498 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21499 | break; |
21500 | case DW_TAG_array_type: | |
f792889a | 21501 | this_type = read_array_type (die, cu); |
c906108c | 21502 | break; |
72019c9c | 21503 | case DW_TAG_set_type: |
f792889a | 21504 | this_type = read_set_type (die, cu); |
72019c9c | 21505 | break; |
c906108c | 21506 | case DW_TAG_pointer_type: |
f792889a | 21507 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21508 | break; |
21509 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21510 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21511 | break; |
21512 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21513 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21514 | break; | |
21515 | case DW_TAG_rvalue_reference_type: | |
21516 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21517 | break; |
21518 | case DW_TAG_const_type: | |
f792889a | 21519 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21520 | break; |
21521 | case DW_TAG_volatile_type: | |
f792889a | 21522 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21523 | break; |
06d66ee9 TT |
21524 | case DW_TAG_restrict_type: |
21525 | this_type = read_tag_restrict_type (die, cu); | |
21526 | break; | |
c906108c | 21527 | case DW_TAG_string_type: |
f792889a | 21528 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21529 | break; |
21530 | case DW_TAG_typedef: | |
f792889a | 21531 | this_type = read_typedef (die, cu); |
c906108c | 21532 | break; |
a02abb62 | 21533 | case DW_TAG_subrange_type: |
f792889a | 21534 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21535 | break; |
c906108c | 21536 | case DW_TAG_base_type: |
f792889a | 21537 | this_type = read_base_type (die, cu); |
c906108c | 21538 | break; |
81a17f79 | 21539 | case DW_TAG_unspecified_type: |
f792889a | 21540 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21541 | break; |
0114d602 DJ |
21542 | case DW_TAG_namespace: |
21543 | this_type = read_namespace_type (die, cu); | |
21544 | break; | |
f55ee35c JK |
21545 | case DW_TAG_module: |
21546 | this_type = read_module_type (die, cu); | |
21547 | break; | |
a2c2acaf MW |
21548 | case DW_TAG_atomic_type: |
21549 | this_type = read_tag_atomic_type (die, cu); | |
21550 | break; | |
c906108c | 21551 | default: |
b98664d3 | 21552 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21553 | dwarf_tag_name (die->tag)); |
c906108c SS |
21554 | break; |
21555 | } | |
63d06c5c | 21556 | |
f792889a | 21557 | return this_type; |
63d06c5c DC |
21558 | } |
21559 | ||
abc72ce4 DE |
21560 | /* See if we can figure out if the class lives in a namespace. We do |
21561 | this by looking for a member function; its demangled name will | |
21562 | contain namespace info, if there is any. | |
21563 | Return the computed name or NULL. | |
21564 | Space for the result is allocated on the objfile's obstack. | |
21565 | This is the full-die version of guess_partial_die_structure_name. | |
21566 | In this case we know DIE has no useful parent. */ | |
21567 | ||
43816ebc | 21568 | static const char * |
abc72ce4 DE |
21569 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21570 | { | |
21571 | struct die_info *spec_die; | |
21572 | struct dwarf2_cu *spec_cu; | |
21573 | struct die_info *child; | |
5e22e966 | 21574 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
21575 | |
21576 | spec_cu = cu; | |
21577 | spec_die = die_specification (die, &spec_cu); | |
21578 | if (spec_die != NULL) | |
21579 | { | |
21580 | die = spec_die; | |
21581 | cu = spec_cu; | |
21582 | } | |
21583 | ||
21584 | for (child = die->child; | |
21585 | child != NULL; | |
21586 | child = child->sibling) | |
21587 | { | |
21588 | if (child->tag == DW_TAG_subprogram) | |
21589 | { | |
73b9be8b | 21590 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21591 | |
7d45c7c3 | 21592 | if (linkage_name != NULL) |
abc72ce4 | 21593 | { |
43816ebc TT |
21594 | gdb::unique_xmalloc_ptr<char> actual_name |
21595 | (language_class_name_from_physname (cu->language_defn, | |
21596 | linkage_name)); | |
21597 | const char *name = NULL; | |
abc72ce4 DE |
21598 | |
21599 | if (actual_name != NULL) | |
21600 | { | |
15d034d0 | 21601 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21602 | |
21603 | if (die_name != NULL | |
43816ebc | 21604 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21605 | { |
21606 | /* Strip off the class name from the full name. | |
21607 | We want the prefix. */ | |
21608 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21609 | int actual_name_len = strlen (actual_name.get ()); |
21610 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21611 | |
21612 | /* Test for '::' as a sanity check. */ | |
21613 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21614 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21615 | name = obstack_strndup ( |
e3b94546 | 21616 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21617 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21618 | } |
21619 | } | |
abc72ce4 DE |
21620 | return name; |
21621 | } | |
21622 | } | |
21623 | } | |
21624 | ||
21625 | return NULL; | |
21626 | } | |
21627 | ||
96408a79 SA |
21628 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21629 | prefix part in such case. See | |
21630 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21631 | ||
a121b7c1 | 21632 | static const char * |
96408a79 SA |
21633 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21634 | { | |
21635 | struct attribute *attr; | |
e6a959d6 | 21636 | const char *base; |
96408a79 SA |
21637 | |
21638 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21639 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21640 | return NULL; | |
21641 | ||
7d45c7c3 | 21642 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21643 | return NULL; |
21644 | ||
73b9be8b | 21645 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21646 | if (attr == NULL || DW_STRING (attr) == NULL) |
21647 | return NULL; | |
21648 | ||
21649 | /* dwarf2_name had to be already called. */ | |
21650 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21651 | ||
21652 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21653 | base = strrchr (DW_STRING (attr), ':'); | |
21654 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21655 | return ""; | |
21656 | ||
5e22e966 | 21657 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
21658 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21659 | DW_STRING (attr), | |
21660 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21661 | } |
21662 | ||
fdde2d81 | 21663 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21664 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21665 | |
0114d602 DJ |
21666 | For example, if we're within the method foo() in the following |
21667 | code: | |
21668 | ||
21669 | namespace N { | |
21670 | class C { | |
21671 | void foo () { | |
21672 | } | |
21673 | }; | |
21674 | } | |
21675 | ||
21676 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21677 | |
0d5cff50 | 21678 | static const char * |
e142c38c | 21679 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21680 | { |
5e22e966 | 21681 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
0114d602 DJ |
21682 | struct die_info *parent, *spec_die; |
21683 | struct dwarf2_cu *spec_cu; | |
21684 | struct type *parent_type; | |
a121b7c1 | 21685 | const char *retval; |
63d06c5c | 21686 | |
9c37b5ae | 21687 | if (cu->language != language_cplus |
c44af4eb TT |
21688 | && cu->language != language_fortran && cu->language != language_d |
21689 | && cu->language != language_rust) | |
0114d602 DJ |
21690 | return ""; |
21691 | ||
96408a79 SA |
21692 | retval = anonymous_struct_prefix (die, cu); |
21693 | if (retval) | |
21694 | return retval; | |
21695 | ||
0114d602 DJ |
21696 | /* We have to be careful in the presence of DW_AT_specification. |
21697 | For example, with GCC 3.4, given the code | |
21698 | ||
21699 | namespace N { | |
21700 | void foo() { | |
21701 | // Definition of N::foo. | |
21702 | } | |
21703 | } | |
21704 | ||
21705 | then we'll have a tree of DIEs like this: | |
21706 | ||
21707 | 1: DW_TAG_compile_unit | |
21708 | 2: DW_TAG_namespace // N | |
21709 | 3: DW_TAG_subprogram // declaration of N::foo | |
21710 | 4: DW_TAG_subprogram // definition of N::foo | |
21711 | DW_AT_specification // refers to die #3 | |
21712 | ||
21713 | Thus, when processing die #4, we have to pretend that we're in | |
21714 | the context of its DW_AT_specification, namely the contex of die | |
21715 | #3. */ | |
21716 | spec_cu = cu; | |
21717 | spec_die = die_specification (die, &spec_cu); | |
21718 | if (spec_die == NULL) | |
21719 | parent = die->parent; | |
21720 | else | |
63d06c5c | 21721 | { |
0114d602 DJ |
21722 | parent = spec_die->parent; |
21723 | cu = spec_cu; | |
63d06c5c | 21724 | } |
0114d602 DJ |
21725 | |
21726 | if (parent == NULL) | |
21727 | return ""; | |
98bfdba5 PA |
21728 | else if (parent->building_fullname) |
21729 | { | |
21730 | const char *name; | |
21731 | const char *parent_name; | |
21732 | ||
21733 | /* It has been seen on RealView 2.2 built binaries, | |
21734 | DW_TAG_template_type_param types actually _defined_ as | |
21735 | children of the parent class: | |
21736 | ||
21737 | enum E {}; | |
21738 | template class <class Enum> Class{}; | |
21739 | Class<enum E> class_e; | |
21740 | ||
21741 | 1: DW_TAG_class_type (Class) | |
21742 | 2: DW_TAG_enumeration_type (E) | |
21743 | 3: DW_TAG_enumerator (enum1:0) | |
21744 | 3: DW_TAG_enumerator (enum2:1) | |
21745 | ... | |
21746 | 2: DW_TAG_template_type_param | |
21747 | DW_AT_type DW_FORM_ref_udata (E) | |
21748 | ||
21749 | Besides being broken debug info, it can put GDB into an | |
21750 | infinite loop. Consider: | |
21751 | ||
21752 | When we're building the full name for Class<E>, we'll start | |
21753 | at Class, and go look over its template type parameters, | |
21754 | finding E. We'll then try to build the full name of E, and | |
21755 | reach here. We're now trying to build the full name of E, | |
21756 | and look over the parent DIE for containing scope. In the | |
21757 | broken case, if we followed the parent DIE of E, we'd again | |
21758 | find Class, and once again go look at its template type | |
21759 | arguments, etc., etc. Simply don't consider such parent die | |
21760 | as source-level parent of this die (it can't be, the language | |
21761 | doesn't allow it), and break the loop here. */ | |
21762 | name = dwarf2_name (die, cu); | |
21763 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21764 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21765 | name ? name : "<unknown>", |
21766 | parent_name ? parent_name : "<unknown>"); | |
21767 | return ""; | |
21768 | } | |
63d06c5c | 21769 | else |
0114d602 DJ |
21770 | switch (parent->tag) |
21771 | { | |
63d06c5c | 21772 | case DW_TAG_namespace: |
0114d602 | 21773 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21774 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21775 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21776 | Work around this problem here. */ | |
21777 | if (cu->language == language_cplus | |
7d93a1e0 | 21778 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 21779 | return ""; |
0114d602 | 21780 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 21781 | return parent_type->name (); |
63d06c5c | 21782 | case DW_TAG_class_type: |
680b30c7 | 21783 | case DW_TAG_interface_type: |
63d06c5c | 21784 | case DW_TAG_structure_type: |
0114d602 | 21785 | case DW_TAG_union_type: |
f55ee35c | 21786 | case DW_TAG_module: |
0114d602 | 21787 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
21788 | if (parent_type->name () != NULL) |
21789 | return parent_type->name (); | |
0114d602 DJ |
21790 | else |
21791 | /* An anonymous structure is only allowed non-static data | |
21792 | members; no typedefs, no member functions, et cetera. | |
21793 | So it does not need a prefix. */ | |
21794 | return ""; | |
abc72ce4 | 21795 | case DW_TAG_compile_unit: |
95554aad | 21796 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21797 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21798 | if (cu->language == language_cplus | |
5989a64e | 21799 | && !dwarf2_per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
21800 | && die->child != NULL |
21801 | && (die->tag == DW_TAG_class_type | |
21802 | || die->tag == DW_TAG_structure_type | |
21803 | || die->tag == DW_TAG_union_type)) | |
21804 | { | |
43816ebc | 21805 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21806 | if (name != NULL) |
21807 | return name; | |
21808 | } | |
21809 | return ""; | |
0a4b0913 AB |
21810 | case DW_TAG_subprogram: |
21811 | /* Nested subroutines in Fortran get a prefix with the name | |
21812 | of the parent's subroutine. */ | |
21813 | if (cu->language == language_fortran) | |
21814 | { | |
21815 | if ((die->tag == DW_TAG_subprogram) | |
21816 | && (dwarf2_name (parent, cu) != NULL)) | |
21817 | return dwarf2_name (parent, cu); | |
21818 | } | |
21819 | return determine_prefix (parent, cu); | |
3d567982 TT |
21820 | case DW_TAG_enumeration_type: |
21821 | parent_type = read_type_die (parent, cu); | |
21822 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21823 | { | |
7d93a1e0 SM |
21824 | if (parent_type->name () != NULL) |
21825 | return parent_type->name (); | |
3d567982 TT |
21826 | return ""; |
21827 | } | |
21828 | /* Fall through. */ | |
63d06c5c | 21829 | default: |
8176b9b8 | 21830 | return determine_prefix (parent, cu); |
63d06c5c | 21831 | } |
63d06c5c DC |
21832 | } |
21833 | ||
3e43a32a MS |
21834 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21835 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21836 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21837 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21838 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21839 | |
f55ee35c | 21840 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21841 | |
21842 | static char * | |
f55ee35c JK |
21843 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21844 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21845 | { |
f55ee35c | 21846 | const char *lead = ""; |
5c315b68 | 21847 | const char *sep; |
63d06c5c | 21848 | |
3e43a32a MS |
21849 | if (suffix == NULL || suffix[0] == '\0' |
21850 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21851 | sep = ""; |
45280282 IB |
21852 | else if (cu->language == language_d) |
21853 | { | |
21854 | /* For D, the 'main' function could be defined in any module, but it | |
21855 | should never be prefixed. */ | |
21856 | if (strcmp (suffix, "D main") == 0) | |
21857 | { | |
21858 | prefix = ""; | |
21859 | sep = ""; | |
21860 | } | |
21861 | else | |
21862 | sep = "."; | |
21863 | } | |
f55ee35c JK |
21864 | else if (cu->language == language_fortran && physname) |
21865 | { | |
21866 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21867 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21868 | ||
21869 | lead = "__"; | |
21870 | sep = "_MOD_"; | |
21871 | } | |
987504bb JJ |
21872 | else |
21873 | sep = "::"; | |
63d06c5c | 21874 | |
6dd47d34 DE |
21875 | if (prefix == NULL) |
21876 | prefix = ""; | |
21877 | if (suffix == NULL) | |
21878 | suffix = ""; | |
21879 | ||
987504bb JJ |
21880 | if (obs == NULL) |
21881 | { | |
3e43a32a | 21882 | char *retval |
224c3ddb SM |
21883 | = ((char *) |
21884 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21885 | |
f55ee35c JK |
21886 | strcpy (retval, lead); |
21887 | strcat (retval, prefix); | |
6dd47d34 DE |
21888 | strcat (retval, sep); |
21889 | strcat (retval, suffix); | |
63d06c5c DC |
21890 | return retval; |
21891 | } | |
987504bb JJ |
21892 | else |
21893 | { | |
21894 | /* We have an obstack. */ | |
f55ee35c | 21895 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21896 | } |
63d06c5c DC |
21897 | } |
21898 | ||
71c25dea TT |
21899 | /* Get name of a die, return NULL if not found. */ |
21900 | ||
15d034d0 TT |
21901 | static const char * |
21902 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21903 | struct objfile *objfile) |
71c25dea TT |
21904 | { |
21905 | if (name && cu->language == language_cplus) | |
21906 | { | |
596dc4ad TT |
21907 | gdb::unique_xmalloc_ptr<char> canon_name |
21908 | = cp_canonicalize_string (name); | |
71c25dea | 21909 | |
596dc4ad TT |
21910 | if (canon_name != nullptr) |
21911 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
21912 | } |
21913 | ||
21914 | return name; | |
c906108c SS |
21915 | } |
21916 | ||
96553a0c DE |
21917 | /* Get name of a die, return NULL if not found. |
21918 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21919 | |
15d034d0 | 21920 | static const char * |
e142c38c | 21921 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21922 | { |
21923 | struct attribute *attr; | |
5e22e966 | 21924 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 21925 | |
e142c38c | 21926 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21927 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21928 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21929 | && die->tag != DW_TAG_class_type |
21930 | && die->tag != DW_TAG_interface_type | |
21931 | && die->tag != DW_TAG_structure_type | |
21932 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21933 | return NULL; |
21934 | ||
21935 | switch (die->tag) | |
21936 | { | |
21937 | case DW_TAG_compile_unit: | |
95554aad | 21938 | case DW_TAG_partial_unit: |
71c25dea TT |
21939 | /* Compilation units have a DW_AT_name that is a filename, not |
21940 | a source language identifier. */ | |
21941 | case DW_TAG_enumeration_type: | |
21942 | case DW_TAG_enumerator: | |
21943 | /* These tags always have simple identifiers already; no need | |
21944 | to canonicalize them. */ | |
21945 | return DW_STRING (attr); | |
907af001 | 21946 | |
96553a0c DE |
21947 | case DW_TAG_namespace: |
21948 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21949 | return DW_STRING (attr); | |
21950 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21951 | ||
907af001 UW |
21952 | case DW_TAG_class_type: |
21953 | case DW_TAG_interface_type: | |
21954 | case DW_TAG_structure_type: | |
21955 | case DW_TAG_union_type: | |
21956 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21957 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21958 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21959 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21960 | if (attr && DW_STRING (attr) |
61012eef GB |
21961 | && (startswith (DW_STRING (attr), "._") |
21962 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21963 | return NULL; |
53832f31 TT |
21964 | |
21965 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21966 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21967 | if (!attr || DW_STRING (attr) == NULL) | |
21968 | { | |
73b9be8b | 21969 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21970 | if (attr == NULL || DW_STRING (attr) == NULL) |
21971 | return NULL; | |
21972 | ||
df5c6c50 JK |
21973 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21974 | call for the same DIE. */ | |
21975 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21976 | { |
43816ebc TT |
21977 | gdb::unique_xmalloc_ptr<char> demangled |
21978 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21979 | if (demangled == nullptr) |
21980 | return nullptr; | |
43816ebc | 21981 | |
be1e3d3e | 21982 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21983 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21984 | } |
67430cd0 TT |
21985 | |
21986 | /* Strip any leading namespaces/classes, keep only the base name. | |
21987 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21988 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21989 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21990 | return &base[1]; | |
21991 | else | |
21992 | return DW_STRING (attr); | |
53832f31 | 21993 | } |
907af001 UW |
21994 | break; |
21995 | ||
71c25dea | 21996 | default: |
907af001 UW |
21997 | break; |
21998 | } | |
21999 | ||
22000 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22001 | { | |
be1e3d3e TT |
22002 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
22003 | objfile); | |
907af001 | 22004 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22005 | } |
907af001 | 22006 | return DW_STRING (attr); |
9219021c DC |
22007 | } |
22008 | ||
22009 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22010 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22011 | containing the return value on output. */ | |
9219021c DC |
22012 | |
22013 | static struct die_info * | |
f2f0e013 | 22014 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22015 | { |
22016 | struct attribute *attr; | |
9219021c | 22017 | |
f2f0e013 | 22018 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22019 | if (attr == NULL) |
22020 | return NULL; | |
22021 | ||
f2f0e013 | 22022 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22023 | } |
22024 | ||
f9aca02d | 22025 | static void |
d97bc12b | 22026 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22027 | { |
22028 | unsigned int i; | |
22029 | ||
d97bc12b | 22030 | print_spaces (indent, f); |
9d8780f0 | 22031 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22032 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22033 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22034 | |
22035 | if (die->parent != NULL) | |
22036 | { | |
22037 | print_spaces (indent, f); | |
9d8780f0 SM |
22038 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22039 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22040 | } |
22041 | ||
22042 | print_spaces (indent, f); | |
22043 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22044 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22045 | |
d97bc12b DE |
22046 | print_spaces (indent, f); |
22047 | fprintf_unfiltered (f, " attributes:\n"); | |
22048 | ||
c906108c SS |
22049 | for (i = 0; i < die->num_attrs; ++i) |
22050 | { | |
d97bc12b DE |
22051 | print_spaces (indent, f); |
22052 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22053 | dwarf_attr_name (die->attrs[i].name), |
22054 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22055 | |
c906108c SS |
22056 | switch (die->attrs[i].form) |
22057 | { | |
c906108c | 22058 | case DW_FORM_addr: |
336d760d | 22059 | case DW_FORM_addrx: |
3019eac3 | 22060 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22061 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22062 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22063 | break; |
22064 | case DW_FORM_block2: | |
22065 | case DW_FORM_block4: | |
22066 | case DW_FORM_block: | |
22067 | case DW_FORM_block1: | |
56eb65bd SP |
22068 | fprintf_unfiltered (f, "block: size %s", |
22069 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22070 | break; |
2dc7f7b3 | 22071 | case DW_FORM_exprloc: |
56eb65bd SP |
22072 | fprintf_unfiltered (f, "expression: size %s", |
22073 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22074 | break; |
0224619f JK |
22075 | case DW_FORM_data16: |
22076 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22077 | break; | |
4568ecf9 DE |
22078 | case DW_FORM_ref_addr: |
22079 | fprintf_unfiltered (f, "ref address: "); | |
22080 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22081 | break; | |
36586728 TT |
22082 | case DW_FORM_GNU_ref_alt: |
22083 | fprintf_unfiltered (f, "alt ref address: "); | |
22084 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22085 | break; | |
10b3939b DJ |
22086 | case DW_FORM_ref1: |
22087 | case DW_FORM_ref2: | |
22088 | case DW_FORM_ref4: | |
4568ecf9 DE |
22089 | case DW_FORM_ref8: |
22090 | case DW_FORM_ref_udata: | |
d97bc12b | 22091 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22092 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22093 | break; |
c906108c SS |
22094 | case DW_FORM_data1: |
22095 | case DW_FORM_data2: | |
22096 | case DW_FORM_data4: | |
ce5d95e1 | 22097 | case DW_FORM_data8: |
c906108c SS |
22098 | case DW_FORM_udata: |
22099 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22100 | fprintf_unfiltered (f, "constant: %s", |
22101 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22102 | break; |
2dc7f7b3 TT |
22103 | case DW_FORM_sec_offset: |
22104 | fprintf_unfiltered (f, "section offset: %s", | |
22105 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22106 | break; | |
55f1336d | 22107 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22108 | fprintf_unfiltered (f, "signature: %s", |
22109 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22110 | break; |
c906108c | 22111 | case DW_FORM_string: |
4bdf3d34 | 22112 | case DW_FORM_strp: |
43988095 | 22113 | case DW_FORM_line_strp: |
cf532bd1 | 22114 | case DW_FORM_strx: |
3019eac3 | 22115 | case DW_FORM_GNU_str_index: |
36586728 | 22116 | case DW_FORM_GNU_strp_alt: |
8285870a | 22117 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22118 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22119 | ? DW_STRING (&die->attrs[i]) : "", |
22120 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22121 | break; |
22122 | case DW_FORM_flag: | |
22123 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22124 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22125 | else |
d97bc12b | 22126 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22127 | break; |
2dc7f7b3 TT |
22128 | case DW_FORM_flag_present: |
22129 | fprintf_unfiltered (f, "flag: TRUE"); | |
22130 | break; | |
a8329558 | 22131 | case DW_FORM_indirect: |
0963b4bd MS |
22132 | /* The reader will have reduced the indirect form to |
22133 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22134 | fprintf_unfiltered (f, |
3e43a32a | 22135 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22136 | break; |
663c44ac JK |
22137 | case DW_FORM_implicit_const: |
22138 | fprintf_unfiltered (f, "constant: %s", | |
22139 | plongest (DW_SND (&die->attrs[i]))); | |
22140 | break; | |
c906108c | 22141 | default: |
d97bc12b | 22142 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22143 | die->attrs[i].form); |
d97bc12b | 22144 | break; |
c906108c | 22145 | } |
d97bc12b | 22146 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22147 | } |
22148 | } | |
22149 | ||
f9aca02d | 22150 | static void |
d97bc12b | 22151 | dump_die_for_error (struct die_info *die) |
c906108c | 22152 | { |
d97bc12b DE |
22153 | dump_die_shallow (gdb_stderr, 0, die); |
22154 | } | |
22155 | ||
22156 | static void | |
22157 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22158 | { | |
22159 | int indent = level * 4; | |
22160 | ||
22161 | gdb_assert (die != NULL); | |
22162 | ||
22163 | if (level >= max_level) | |
22164 | return; | |
22165 | ||
22166 | dump_die_shallow (f, indent, die); | |
22167 | ||
22168 | if (die->child != NULL) | |
c906108c | 22169 | { |
d97bc12b DE |
22170 | print_spaces (indent, f); |
22171 | fprintf_unfiltered (f, " Children:"); | |
22172 | if (level + 1 < max_level) | |
22173 | { | |
22174 | fprintf_unfiltered (f, "\n"); | |
22175 | dump_die_1 (f, level + 1, max_level, die->child); | |
22176 | } | |
22177 | else | |
22178 | { | |
3e43a32a MS |
22179 | fprintf_unfiltered (f, |
22180 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22181 | } |
22182 | } | |
22183 | ||
22184 | if (die->sibling != NULL && level > 0) | |
22185 | { | |
22186 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22187 | } |
22188 | } | |
22189 | ||
d97bc12b DE |
22190 | /* This is called from the pdie macro in gdbinit.in. |
22191 | It's not static so gcc will keep a copy callable from gdb. */ | |
22192 | ||
22193 | void | |
22194 | dump_die (struct die_info *die, int max_level) | |
22195 | { | |
22196 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22197 | } | |
22198 | ||
f9aca02d | 22199 | static void |
51545339 | 22200 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22201 | { |
51545339 | 22202 | void **slot; |
c906108c | 22203 | |
9c541725 PA |
22204 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22205 | to_underlying (die->sect_off), | |
b64f50a1 | 22206 | INSERT); |
51545339 DJ |
22207 | |
22208 | *slot = die; | |
c906108c SS |
22209 | } |
22210 | ||
348e048f DE |
22211 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22212 | On entry *REF_CU is the CU of SRC_DIE. | |
22213 | On exit *REF_CU is the CU of the result. */ | |
22214 | ||
22215 | static struct die_info * | |
ff39bb5e | 22216 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22217 | struct dwarf2_cu **ref_cu) |
22218 | { | |
22219 | struct die_info *die; | |
22220 | ||
cd6c91b4 | 22221 | if (attr->form_is_ref ()) |
348e048f | 22222 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22223 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22224 | die = follow_die_sig (src_die, attr, ref_cu); |
22225 | else | |
22226 | { | |
22227 | dump_die_for_error (src_die); | |
22228 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22229 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22230 | } |
22231 | ||
22232 | return die; | |
03dd20cc DJ |
22233 | } |
22234 | ||
5c631832 | 22235 | /* Follow reference OFFSET. |
673bfd45 DE |
22236 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22237 | On exit *REF_CU is the CU of the result. | |
22238 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22239 | |
f9aca02d | 22240 | static struct die_info * |
9c541725 | 22241 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22242 | struct dwarf2_cu **ref_cu) |
c906108c | 22243 | { |
10b3939b | 22244 | struct die_info temp_die; |
f2f0e013 | 22245 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
5e22e966 | 22246 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
10b3939b | 22247 | |
348e048f DE |
22248 | gdb_assert (cu->per_cu != NULL); |
22249 | ||
98bfdba5 PA |
22250 | target_cu = cu; |
22251 | ||
3019eac3 | 22252 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22253 | { |
22254 | /* .debug_types CUs cannot reference anything outside their CU. | |
22255 | If they need to, they have to reference a signatured type via | |
55f1336d | 22256 | DW_FORM_ref_sig8. */ |
4057dfde | 22257 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22258 | return NULL; |
348e048f | 22259 | } |
36586728 | 22260 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22261 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22262 | { |
22263 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22264 | |
9c541725 | 22265 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22266 | dwarf2_per_objfile); |
03dd20cc DJ |
22267 | |
22268 | /* If necessary, add it to the queue and load its DIEs. */ | |
120ce1b5 | 22269 | if (maybe_queue_comp_unit (cu, per_cu, dwarf2_per_objfile, cu->language)) |
ab432490 | 22270 | load_full_comp_unit (per_cu, dwarf2_per_objfile, false, cu->language); |
03dd20cc | 22271 | |
10b3939b DJ |
22272 | target_cu = per_cu->cu; |
22273 | } | |
98bfdba5 PA |
22274 | else if (cu->dies == NULL) |
22275 | { | |
22276 | /* We're loading full DIEs during partial symbol reading. */ | |
5989a64e | 22277 | gdb_assert (dwarf2_per_objfile->per_bfd->reading_partial_symbols); |
ab432490 SM |
22278 | load_full_comp_unit (cu->per_cu, dwarf2_per_objfile, false, |
22279 | language_minimal); | |
98bfdba5 | 22280 | } |
c906108c | 22281 | |
f2f0e013 | 22282 | *ref_cu = target_cu; |
9c541725 | 22283 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22284 | |
22285 | if (target_cu != cu) | |
22286 | target_cu->ancestor = cu; | |
22287 | ||
9a3c8263 | 22288 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22289 | &temp_die, |
22290 | to_underlying (sect_off)); | |
5c631832 | 22291 | } |
10b3939b | 22292 | |
5c631832 JK |
22293 | /* Follow reference attribute ATTR of SRC_DIE. |
22294 | On entry *REF_CU is the CU of SRC_DIE. | |
22295 | On exit *REF_CU is the CU of the result. */ | |
22296 | ||
22297 | static struct die_info * | |
ff39bb5e | 22298 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22299 | struct dwarf2_cu **ref_cu) |
22300 | { | |
0826b30a | 22301 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22302 | struct dwarf2_cu *cu = *ref_cu; |
22303 | struct die_info *die; | |
22304 | ||
9c541725 | 22305 | die = follow_die_offset (sect_off, |
36586728 TT |
22306 | (attr->form == DW_FORM_GNU_ref_alt |
22307 | || cu->per_cu->is_dwz), | |
22308 | ref_cu); | |
5c631832 | 22309 | if (!die) |
9d8780f0 SM |
22310 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22311 | "at %s [in module %s]"), | |
22312 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22313 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22314 | |
5c631832 JK |
22315 | return die; |
22316 | } | |
22317 | ||
d4c9a4f8 | 22318 | /* See read.h. */ |
5c631832 JK |
22319 | |
22320 | struct dwarf2_locexpr_baton | |
9c541725 | 22321 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22322 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22323 | dwarf2_per_objfile *dwarf2_per_objfile, |
8b9737bf | 22324 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22325 | void *baton, bool resolve_abstract_p) |
5c631832 | 22326 | { |
918dd910 | 22327 | struct dwarf2_cu *cu; |
5c631832 JK |
22328 | struct die_info *die; |
22329 | struct attribute *attr; | |
22330 | struct dwarf2_locexpr_baton retval; | |
12359b5e | 22331 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8cf6f0b1 | 22332 | |
918dd910 | 22333 | if (per_cu->cu == NULL) |
ab432490 | 22334 | load_cu (per_cu, dwarf2_per_objfile, false); |
918dd910 | 22335 | cu = per_cu->cu; |
cc12ce38 DE |
22336 | if (cu == NULL) |
22337 | { | |
22338 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22339 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22340 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22341 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22342 | } |
918dd910 | 22343 | |
9c541725 | 22344 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22345 | if (!die) |
9d8780f0 SM |
22346 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22347 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22348 | |
22349 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22350 | if (!attr && resolve_abstract_p |
5989a64e SM |
22351 | && (dwarf2_per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
22352 | != dwarf2_per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 TV |
22353 | { |
22354 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22355 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22356 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22357 | |
3360b6e7 | 22358 | for (const auto &cand_off |
5989a64e | 22359 | : dwarf2_per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 22360 | { |
3360b6e7 TV |
22361 | struct dwarf2_cu *cand_cu = cu; |
22362 | struct die_info *cand | |
22363 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22364 | if (!cand | |
22365 | || !cand->parent | |
e4a62c65 TV |
22366 | || cand->parent->tag != DW_TAG_subprogram) |
22367 | continue; | |
22368 | ||
22369 | CORE_ADDR pc_low, pc_high; | |
22370 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22371 | if (pc_low == ((CORE_ADDR) -1)) |
22372 | continue; | |
22373 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22374 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22375 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22376 | continue; |
22377 | ||
22378 | die = cand; | |
22379 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22380 | break; | |
22381 | } | |
22382 | } | |
22383 | ||
5c631832 JK |
22384 | if (!attr) |
22385 | { | |
e103e986 JK |
22386 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22387 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22388 | |
e103e986 | 22389 | retval.data = NULL; |
5c631832 JK |
22390 | retval.size = 0; |
22391 | } | |
cd6c91b4 | 22392 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22393 | { |
22394 | struct dwarf2_loclist_baton loclist_baton; | |
22395 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22396 | size_t size; | |
22397 | ||
22398 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22399 | ||
22400 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22401 | &size, pc); | |
22402 | retval.size = size; | |
22403 | } | |
5c631832 JK |
22404 | else |
22405 | { | |
4fc6c0d5 | 22406 | if (!attr->form_is_block ()) |
9d8780f0 | 22407 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22408 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22409 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22410 | |
22411 | retval.data = DW_BLOCK (attr)->data; | |
22412 | retval.size = DW_BLOCK (attr)->size; | |
22413 | } | |
a50264ba | 22414 | retval.per_objfile = dwarf2_per_objfile; |
5c631832 | 22415 | retval.per_cu = cu->per_cu; |
918dd910 | 22416 | |
ed2dc618 | 22417 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 22418 | |
5c631832 | 22419 | return retval; |
348e048f DE |
22420 | } |
22421 | ||
d4c9a4f8 | 22422 | /* See read.h. */ |
8b9737bf TT |
22423 | |
22424 | struct dwarf2_locexpr_baton | |
22425 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22426 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22427 | dwarf2_per_objfile *per_objfile, |
8b9737bf TT |
22428 | CORE_ADDR (*get_frame_pc) (void *baton), |
22429 | void *baton) | |
22430 | { | |
9c541725 | 22431 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22432 | |
14095eb3 SM |
22433 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
22434 | get_frame_pc, baton); | |
8b9737bf TT |
22435 | } |
22436 | ||
b6807d98 TT |
22437 | /* Write a constant of a given type as target-ordered bytes into |
22438 | OBSTACK. */ | |
22439 | ||
22440 | static const gdb_byte * | |
22441 | write_constant_as_bytes (struct obstack *obstack, | |
22442 | enum bfd_endian byte_order, | |
22443 | struct type *type, | |
22444 | ULONGEST value, | |
22445 | LONGEST *len) | |
22446 | { | |
22447 | gdb_byte *result; | |
22448 | ||
22449 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22450 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22451 | store_unsigned_integer (result, *len, byte_order, value); |
22452 | ||
22453 | return result; | |
22454 | } | |
22455 | ||
d4c9a4f8 | 22456 | /* See read.h. */ |
b6807d98 TT |
22457 | |
22458 | const gdb_byte * | |
9c541725 | 22459 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 22460 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22461 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 22462 | obstack *obstack, |
b6807d98 TT |
22463 | LONGEST *len) |
22464 | { | |
22465 | struct dwarf2_cu *cu; | |
22466 | struct die_info *die; | |
22467 | struct attribute *attr; | |
22468 | const gdb_byte *result = NULL; | |
22469 | struct type *type; | |
22470 | LONGEST value; | |
22471 | enum bfd_endian byte_order; | |
14095eb3 | 22472 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 22473 | |
b6807d98 | 22474 | if (per_cu->cu == NULL) |
14095eb3 | 22475 | load_cu (per_cu, per_objfile, false); |
b6807d98 | 22476 | cu = per_cu->cu; |
cc12ce38 DE |
22477 | if (cu == NULL) |
22478 | { | |
22479 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22480 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22481 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22482 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22483 | } |
b6807d98 | 22484 | |
9c541725 | 22485 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22486 | if (!die) |
9d8780f0 SM |
22487 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22488 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22489 | |
22490 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22491 | if (attr == NULL) | |
22492 | return NULL; | |
22493 | ||
e3b94546 | 22494 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22495 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22496 | ||
22497 | switch (attr->form) | |
22498 | { | |
22499 | case DW_FORM_addr: | |
336d760d | 22500 | case DW_FORM_addrx: |
b6807d98 TT |
22501 | case DW_FORM_GNU_addr_index: |
22502 | { | |
22503 | gdb_byte *tem; | |
22504 | ||
22505 | *len = cu->header.addr_size; | |
224c3ddb | 22506 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22507 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22508 | result = tem; | |
22509 | } | |
22510 | break; | |
22511 | case DW_FORM_string: | |
22512 | case DW_FORM_strp: | |
cf532bd1 | 22513 | case DW_FORM_strx: |
b6807d98 TT |
22514 | case DW_FORM_GNU_str_index: |
22515 | case DW_FORM_GNU_strp_alt: | |
22516 | /* DW_STRING is already allocated on the objfile obstack, point | |
22517 | directly to it. */ | |
22518 | result = (const gdb_byte *) DW_STRING (attr); | |
22519 | *len = strlen (DW_STRING (attr)); | |
22520 | break; | |
22521 | case DW_FORM_block1: | |
22522 | case DW_FORM_block2: | |
22523 | case DW_FORM_block4: | |
22524 | case DW_FORM_block: | |
22525 | case DW_FORM_exprloc: | |
0224619f | 22526 | case DW_FORM_data16: |
b6807d98 TT |
22527 | result = DW_BLOCK (attr)->data; |
22528 | *len = DW_BLOCK (attr)->size; | |
22529 | break; | |
22530 | ||
22531 | /* The DW_AT_const_value attributes are supposed to carry the | |
22532 | symbol's value "represented as it would be on the target | |
22533 | architecture." By the time we get here, it's already been | |
22534 | converted to host endianness, so we just need to sign- or | |
22535 | zero-extend it as appropriate. */ | |
22536 | case DW_FORM_data1: | |
22537 | type = die_type (die, cu); | |
22538 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22539 | if (result == NULL) | |
22540 | result = write_constant_as_bytes (obstack, byte_order, | |
22541 | type, value, len); | |
22542 | break; | |
22543 | case DW_FORM_data2: | |
22544 | type = die_type (die, cu); | |
22545 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22546 | if (result == NULL) | |
22547 | result = write_constant_as_bytes (obstack, byte_order, | |
22548 | type, value, len); | |
22549 | break; | |
22550 | case DW_FORM_data4: | |
22551 | type = die_type (die, cu); | |
22552 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22553 | if (result == NULL) | |
22554 | result = write_constant_as_bytes (obstack, byte_order, | |
22555 | type, value, len); | |
22556 | break; | |
22557 | case DW_FORM_data8: | |
22558 | type = die_type (die, cu); | |
22559 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22560 | if (result == NULL) | |
22561 | result = write_constant_as_bytes (obstack, byte_order, | |
22562 | type, value, len); | |
22563 | break; | |
22564 | ||
22565 | case DW_FORM_sdata: | |
663c44ac | 22566 | case DW_FORM_implicit_const: |
b6807d98 TT |
22567 | type = die_type (die, cu); |
22568 | result = write_constant_as_bytes (obstack, byte_order, | |
22569 | type, DW_SND (attr), len); | |
22570 | break; | |
22571 | ||
22572 | case DW_FORM_udata: | |
22573 | type = die_type (die, cu); | |
22574 | result = write_constant_as_bytes (obstack, byte_order, | |
22575 | type, DW_UNSND (attr), len); | |
22576 | break; | |
22577 | ||
22578 | default: | |
b98664d3 | 22579 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22580 | dwarf_form_name (attr->form)); |
22581 | break; | |
22582 | } | |
22583 | ||
22584 | return result; | |
22585 | } | |
22586 | ||
d4c9a4f8 | 22587 | /* See read.h. */ |
7942e96e AA |
22588 | |
22589 | struct type * | |
9c541725 | 22590 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
22591 | dwarf2_per_cu_data *per_cu, |
22592 | dwarf2_per_objfile *per_objfile) | |
7942e96e AA |
22593 | { |
22594 | struct dwarf2_cu *cu; | |
22595 | struct die_info *die; | |
22596 | ||
7942e96e | 22597 | if (per_cu->cu == NULL) |
14095eb3 | 22598 | load_cu (per_cu, per_objfile, false); |
7942e96e AA |
22599 | cu = per_cu->cu; |
22600 | if (!cu) | |
22601 | return NULL; | |
22602 | ||
9c541725 | 22603 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22604 | if (!die) |
22605 | return NULL; | |
22606 | ||
22607 | return die_type (die, cu); | |
22608 | } | |
22609 | ||
8cb5117c | 22610 | /* See read.h. */ |
8a9b8146 TT |
22611 | |
22612 | struct type * | |
b64f50a1 | 22613 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
22614 | dwarf2_per_cu_data *per_cu, |
22615 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 22616 | { |
9c541725 | 22617 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 22618 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
22619 | } |
22620 | ||
ac9ec31b | 22621 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22622 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22623 | On exit *REF_CU is the CU of the result. |
22624 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22625 | |
22626 | static struct die_info * | |
ac9ec31b DE |
22627 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22628 | struct dwarf2_cu **ref_cu) | |
348e048f | 22629 | { |
348e048f | 22630 | struct die_info temp_die; |
c24bdb02 | 22631 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 22632 | struct die_info *die; |
120ce1b5 SM |
22633 | dwarf2_per_objfile *dwarf2_per_objfile = (*ref_cu)->per_objfile; |
22634 | ||
348e048f | 22635 | |
ac9ec31b DE |
22636 | /* While it might be nice to assert sig_type->type == NULL here, |
22637 | we can get here for DW_AT_imported_declaration where we need | |
22638 | the DIE not the type. */ | |
348e048f DE |
22639 | |
22640 | /* If necessary, add it to the queue and load its DIEs. */ | |
22641 | ||
120ce1b5 SM |
22642 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, dwarf2_per_objfile, |
22643 | language_minimal)) | |
22644 | read_signatured_type (sig_type, dwarf2_per_objfile); | |
348e048f | 22645 | |
348e048f | 22646 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 22647 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22648 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22649 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22650 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22651 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22652 | if (die) |
22653 | { | |
796a7ff8 DE |
22654 | /* For .gdb_index version 7 keep track of included TUs. |
22655 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
5989a64e SM |
22656 | if (dwarf2_per_objfile->per_bfd->index_table != NULL |
22657 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 22658 | { |
ae640021 | 22659 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22660 | } |
22661 | ||
348e048f | 22662 | *ref_cu = sig_cu; |
c24bdb02 KS |
22663 | if (sig_cu != cu) |
22664 | sig_cu->ancestor = cu; | |
22665 | ||
348e048f DE |
22666 | return die; |
22667 | } | |
22668 | ||
ac9ec31b DE |
22669 | return NULL; |
22670 | } | |
22671 | ||
22672 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22673 | On entry *REF_CU is the CU of SRC_DIE. | |
22674 | On exit *REF_CU is the CU of the result. | |
22675 | The result is the DIE of the type. | |
22676 | If the referenced type cannot be found an error is thrown. */ | |
22677 | ||
22678 | static struct die_info * | |
ff39bb5e | 22679 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22680 | struct dwarf2_cu **ref_cu) |
22681 | { | |
22682 | ULONGEST signature = DW_SIGNATURE (attr); | |
22683 | struct signatured_type *sig_type; | |
22684 | struct die_info *die; | |
22685 | ||
22686 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22687 | ||
a2ce51a0 | 22688 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22689 | /* sig_type will be NULL if the signatured type is missing from |
22690 | the debug info. */ | |
22691 | if (sig_type == NULL) | |
22692 | { | |
22693 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22694 | " from DIE at %s [in module %s]"), |
22695 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22696 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22697 | } |
22698 | ||
22699 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22700 | if (die == NULL) | |
22701 | { | |
22702 | dump_die_for_error (src_die); | |
22703 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22704 | " from DIE at %s [in module %s]"), |
22705 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22706 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22707 | } |
22708 | ||
22709 | return die; | |
22710 | } | |
22711 | ||
22712 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22713 | reading in and processing the type unit if necessary. */ | |
22714 | ||
22715 | static struct type * | |
22716 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22717 | struct dwarf2_cu *cu) | |
22718 | { | |
5e22e966 | 22719 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b DE |
22720 | struct signatured_type *sig_type; |
22721 | struct dwarf2_cu *type_cu; | |
22722 | struct die_info *type_die; | |
22723 | struct type *type; | |
22724 | ||
a2ce51a0 | 22725 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22726 | /* sig_type will be NULL if the signatured type is missing from |
22727 | the debug info. */ | |
22728 | if (sig_type == NULL) | |
22729 | { | |
b98664d3 | 22730 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22731 | " from DIE at %s [in module %s]"), |
22732 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22733 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22734 | return build_error_marker_type (cu, die); |
22735 | } | |
22736 | ||
22737 | /* If we already know the type we're done. */ | |
e286671b TT |
22738 | type = dwarf2_per_objfile->get_type_for_signatured_type (sig_type); |
22739 | if (type != nullptr) | |
22740 | return type; | |
ac9ec31b DE |
22741 | |
22742 | type_cu = cu; | |
22743 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22744 | if (type_die != NULL) | |
22745 | { | |
22746 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22747 | is created. This is important, for example, because for c++ classes | |
22748 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22749 | type = read_type_die (type_die, type_cu); | |
22750 | if (type == NULL) | |
22751 | { | |
b98664d3 | 22752 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22753 | " referenced from DIE at %s [in module %s]"), |
22754 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22755 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22756 | type = build_error_marker_type (cu, die); |
22757 | } | |
22758 | } | |
22759 | else | |
22760 | { | |
b98664d3 | 22761 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22762 | " from DIE at %s [in module %s]"), |
22763 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22764 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22765 | type = build_error_marker_type (cu, die); |
22766 | } | |
e286671b TT |
22767 | |
22768 | dwarf2_per_objfile->set_type_for_signatured_type (sig_type, type); | |
ac9ec31b DE |
22769 | |
22770 | return type; | |
22771 | } | |
22772 | ||
22773 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22774 | reading in and processing the type unit if necessary. */ | |
22775 | ||
22776 | static struct type * | |
ff39bb5e | 22777 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22778 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22779 | { |
22780 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22781 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22782 | { |
22783 | struct dwarf2_cu *type_cu = cu; | |
22784 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22785 | ||
22786 | return read_type_die (type_die, type_cu); | |
22787 | } | |
22788 | else if (attr->form == DW_FORM_ref_sig8) | |
22789 | { | |
22790 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22791 | } | |
22792 | else | |
22793 | { | |
5e22e966 | 22794 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 22795 | |
b98664d3 | 22796 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22797 | " at %s [in module %s]"), |
22798 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22799 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22800 | return build_error_marker_type (cu, die); |
22801 | } | |
348e048f DE |
22802 | } |
22803 | ||
e5fe5e75 | 22804 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22805 | |
22806 | static void | |
ab432490 SM |
22807 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
22808 | dwarf2_per_objfile *per_objfile) | |
348e048f | 22809 | { |
52dc124a | 22810 | struct signatured_type *sig_type; |
348e048f | 22811 | |
f4dc4d17 | 22812 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22813 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22814 | |
6721b2ec DE |
22815 | /* We have the per_cu, but we need the signatured_type. |
22816 | Fortunately this is an easy translation. */ | |
22817 | gdb_assert (per_cu->is_debug_types); | |
22818 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22819 | |
6721b2ec | 22820 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22821 | |
ab432490 | 22822 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22823 | |
6721b2ec | 22824 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22825 | } |
22826 | ||
3019eac3 DE |
22827 | /* Read in a signatured type and build its CU and DIEs. |
22828 | If the type is a stub for the real type in a DWO file, | |
22829 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22830 | |
22831 | static void | |
ab432490 SM |
22832 | read_signatured_type (signatured_type *sig_type, |
22833 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
22834 | { |
22835 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22836 | |
3019eac3 | 22837 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22838 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22839 | |
ab432490 | 22840 | cutu_reader reader (per_cu, per_objfile, NULL, 0, false); |
c0ab21c2 TT |
22841 | |
22842 | if (!reader.dummy_p) | |
22843 | { | |
22844 | struct dwarf2_cu *cu = reader.cu; | |
22845 | const gdb_byte *info_ptr = reader.info_ptr; | |
22846 | ||
22847 | gdb_assert (cu->die_hash == NULL); | |
22848 | cu->die_hash = | |
22849 | htab_create_alloc_ex (cu->header.length / 12, | |
22850 | die_hash, | |
22851 | die_eq, | |
22852 | NULL, | |
22853 | &cu->comp_unit_obstack, | |
22854 | hashtab_obstack_allocate, | |
22855 | dummy_obstack_deallocate); | |
22856 | ||
3e225074 | 22857 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22858 | reader.comp_unit_die->child |
22859 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22860 | reader.comp_unit_die); | |
22861 | cu->dies = reader.comp_unit_die; | |
22862 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22863 | ||
22864 | /* We try not to read any attributes in this function, because | |
22865 | not all CUs needed for references have been loaded yet, and | |
22866 | symbol table processing isn't initialized. But we have to | |
22867 | set the CU language, or we won't be able to build types | |
22868 | correctly. Similarly, if we do not read the producer, we can | |
22869 | not apply producer-specific interpretation. */ | |
22870 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22871 | |
22872 | reader.keep (); | |
c0ab21c2 TT |
22873 | } |
22874 | ||
7ee85ab1 | 22875 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22876 | } |
22877 | ||
c906108c SS |
22878 | /* Decode simple location descriptions. |
22879 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
22880 | the location and return the value. If COMPUTED is non-null, it is |
22881 | set to true to indicate that decoding was successful, and false | |
22882 | otherwise. If COMPUTED is null, then this function may emit a | |
22883 | complaint. */ | |
c906108c SS |
22884 | |
22885 | static CORE_ADDR | |
7d79de9a | 22886 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 22887 | { |
5e22e966 | 22888 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
22889 | size_t i; |
22890 | size_t size = blk->size; | |
d521ce57 | 22891 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22892 | CORE_ADDR stack[64]; |
22893 | int stacki; | |
22894 | unsigned int bytes_read, unsnd; | |
22895 | gdb_byte op; | |
c906108c | 22896 | |
7d79de9a TT |
22897 | if (computed != nullptr) |
22898 | *computed = false; | |
22899 | ||
21ae7a4d JK |
22900 | i = 0; |
22901 | stacki = 0; | |
22902 | stack[stacki] = 0; | |
22903 | stack[++stacki] = 0; | |
22904 | ||
22905 | while (i < size) | |
22906 | { | |
22907 | op = data[i++]; | |
22908 | switch (op) | |
22909 | { | |
22910 | case DW_OP_lit0: | |
22911 | case DW_OP_lit1: | |
22912 | case DW_OP_lit2: | |
22913 | case DW_OP_lit3: | |
22914 | case DW_OP_lit4: | |
22915 | case DW_OP_lit5: | |
22916 | case DW_OP_lit6: | |
22917 | case DW_OP_lit7: | |
22918 | case DW_OP_lit8: | |
22919 | case DW_OP_lit9: | |
22920 | case DW_OP_lit10: | |
22921 | case DW_OP_lit11: | |
22922 | case DW_OP_lit12: | |
22923 | case DW_OP_lit13: | |
22924 | case DW_OP_lit14: | |
22925 | case DW_OP_lit15: | |
22926 | case DW_OP_lit16: | |
22927 | case DW_OP_lit17: | |
22928 | case DW_OP_lit18: | |
22929 | case DW_OP_lit19: | |
22930 | case DW_OP_lit20: | |
22931 | case DW_OP_lit21: | |
22932 | case DW_OP_lit22: | |
22933 | case DW_OP_lit23: | |
22934 | case DW_OP_lit24: | |
22935 | case DW_OP_lit25: | |
22936 | case DW_OP_lit26: | |
22937 | case DW_OP_lit27: | |
22938 | case DW_OP_lit28: | |
22939 | case DW_OP_lit29: | |
22940 | case DW_OP_lit30: | |
22941 | case DW_OP_lit31: | |
22942 | stack[++stacki] = op - DW_OP_lit0; | |
22943 | break; | |
f1bea926 | 22944 | |
21ae7a4d JK |
22945 | case DW_OP_reg0: |
22946 | case DW_OP_reg1: | |
22947 | case DW_OP_reg2: | |
22948 | case DW_OP_reg3: | |
22949 | case DW_OP_reg4: | |
22950 | case DW_OP_reg5: | |
22951 | case DW_OP_reg6: | |
22952 | case DW_OP_reg7: | |
22953 | case DW_OP_reg8: | |
22954 | case DW_OP_reg9: | |
22955 | case DW_OP_reg10: | |
22956 | case DW_OP_reg11: | |
22957 | case DW_OP_reg12: | |
22958 | case DW_OP_reg13: | |
22959 | case DW_OP_reg14: | |
22960 | case DW_OP_reg15: | |
22961 | case DW_OP_reg16: | |
22962 | case DW_OP_reg17: | |
22963 | case DW_OP_reg18: | |
22964 | case DW_OP_reg19: | |
22965 | case DW_OP_reg20: | |
22966 | case DW_OP_reg21: | |
22967 | case DW_OP_reg22: | |
22968 | case DW_OP_reg23: | |
22969 | case DW_OP_reg24: | |
22970 | case DW_OP_reg25: | |
22971 | case DW_OP_reg26: | |
22972 | case DW_OP_reg27: | |
22973 | case DW_OP_reg28: | |
22974 | case DW_OP_reg29: | |
22975 | case DW_OP_reg30: | |
22976 | case DW_OP_reg31: | |
22977 | stack[++stacki] = op - DW_OP_reg0; | |
22978 | if (i < size) | |
7d79de9a TT |
22979 | { |
22980 | if (computed == nullptr) | |
22981 | dwarf2_complex_location_expr_complaint (); | |
22982 | else | |
22983 | return 0; | |
22984 | } | |
21ae7a4d | 22985 | break; |
c906108c | 22986 | |
21ae7a4d JK |
22987 | case DW_OP_regx: |
22988 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22989 | i += bytes_read; | |
22990 | stack[++stacki] = unsnd; | |
22991 | if (i < size) | |
7d79de9a TT |
22992 | { |
22993 | if (computed == nullptr) | |
22994 | dwarf2_complex_location_expr_complaint (); | |
22995 | else | |
22996 | return 0; | |
22997 | } | |
21ae7a4d | 22998 | break; |
c906108c | 22999 | |
21ae7a4d | 23000 | case DW_OP_addr: |
c8a7a66f TT |
23001 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
23002 | &bytes_read); | |
21ae7a4d JK |
23003 | i += bytes_read; |
23004 | break; | |
d53d4ac5 | 23005 | |
21ae7a4d JK |
23006 | case DW_OP_const1u: |
23007 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23008 | i += 1; | |
23009 | break; | |
23010 | ||
23011 | case DW_OP_const1s: | |
23012 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23013 | i += 1; | |
23014 | break; | |
23015 | ||
23016 | case DW_OP_const2u: | |
23017 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23018 | i += 2; | |
23019 | break; | |
23020 | ||
23021 | case DW_OP_const2s: | |
23022 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23023 | i += 2; | |
23024 | break; | |
d53d4ac5 | 23025 | |
21ae7a4d JK |
23026 | case DW_OP_const4u: |
23027 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23028 | i += 4; | |
23029 | break; | |
23030 | ||
23031 | case DW_OP_const4s: | |
23032 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23033 | i += 4; | |
23034 | break; | |
23035 | ||
585861ea JK |
23036 | case DW_OP_const8u: |
23037 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23038 | i += 8; | |
23039 | break; | |
23040 | ||
21ae7a4d JK |
23041 | case DW_OP_constu: |
23042 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23043 | &bytes_read); | |
23044 | i += bytes_read; | |
23045 | break; | |
23046 | ||
23047 | case DW_OP_consts: | |
23048 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23049 | i += bytes_read; | |
23050 | break; | |
23051 | ||
23052 | case DW_OP_dup: | |
23053 | stack[stacki + 1] = stack[stacki]; | |
23054 | stacki++; | |
23055 | break; | |
23056 | ||
23057 | case DW_OP_plus: | |
23058 | stack[stacki - 1] += stack[stacki]; | |
23059 | stacki--; | |
23060 | break; | |
23061 | ||
23062 | case DW_OP_plus_uconst: | |
23063 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23064 | &bytes_read); | |
23065 | i += bytes_read; | |
23066 | break; | |
23067 | ||
23068 | case DW_OP_minus: | |
23069 | stack[stacki - 1] -= stack[stacki]; | |
23070 | stacki--; | |
23071 | break; | |
23072 | ||
23073 | case DW_OP_deref: | |
23074 | /* If we're not the last op, then we definitely can't encode | |
23075 | this using GDB's address_class enum. This is valid for partial | |
23076 | global symbols, although the variable's address will be bogus | |
23077 | in the psymtab. */ | |
23078 | if (i < size) | |
7d79de9a TT |
23079 | { |
23080 | if (computed == nullptr) | |
23081 | dwarf2_complex_location_expr_complaint (); | |
23082 | else | |
23083 | return 0; | |
23084 | } | |
21ae7a4d JK |
23085 | break; |
23086 | ||
23087 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23088 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23089 | /* The top of the stack has the offset from the beginning |
23090 | of the thread control block at which the variable is located. */ | |
23091 | /* Nothing should follow this operator, so the top of stack would | |
23092 | be returned. */ | |
23093 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23094 | address will be bogus in the psymtab. Make it always at least |
23095 | non-zero to not look as a variable garbage collected by linker | |
23096 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23097 | if (i < size) |
7d79de9a TT |
23098 | { |
23099 | if (computed == nullptr) | |
23100 | dwarf2_complex_location_expr_complaint (); | |
23101 | else | |
23102 | return 0; | |
23103 | } | |
585861ea | 23104 | stack[stacki]++; |
21ae7a4d JK |
23105 | break; |
23106 | ||
23107 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23108 | if (computed != nullptr) |
23109 | return 0; | |
21ae7a4d JK |
23110 | break; |
23111 | ||
336d760d | 23112 | case DW_OP_addrx: |
3019eac3 | 23113 | case DW_OP_GNU_addr_index: |
49f6c839 | 23114 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23115 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23116 | &bytes_read); | |
23117 | i += bytes_read; | |
23118 | break; | |
23119 | ||
21ae7a4d | 23120 | default: |
7d79de9a TT |
23121 | if (computed == nullptr) |
23122 | { | |
23123 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23124 | |
7d79de9a TT |
23125 | if (name) |
23126 | complaint (_("unsupported stack op: '%s'"), | |
23127 | name); | |
23128 | else | |
23129 | complaint (_("unsupported stack op: '%02x'"), | |
23130 | op); | |
23131 | } | |
21ae7a4d JK |
23132 | |
23133 | return (stack[stacki]); | |
d53d4ac5 | 23134 | } |
3c6e0cb3 | 23135 | |
21ae7a4d JK |
23136 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23137 | outside of the allocated space. Also enforce minimum>0. */ | |
23138 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23139 | { | |
7d79de9a TT |
23140 | if (computed == nullptr) |
23141 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23142 | return 0; |
23143 | } | |
23144 | ||
23145 | if (stacki <= 0) | |
23146 | { | |
7d79de9a TT |
23147 | if (computed == nullptr) |
23148 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23149 | return 0; |
23150 | } | |
23151 | } | |
7d79de9a TT |
23152 | |
23153 | if (computed != nullptr) | |
23154 | *computed = true; | |
21ae7a4d | 23155 | return (stack[stacki]); |
c906108c SS |
23156 | } |
23157 | ||
23158 | /* memory allocation interface */ | |
23159 | ||
c906108c | 23160 | static struct dwarf_block * |
7b5a2f43 | 23161 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23162 | { |
8d749320 | 23163 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23164 | } |
23165 | ||
c906108c | 23166 | static struct die_info * |
b60c80d6 | 23167 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23168 | { |
23169 | struct die_info *die; | |
b60c80d6 DJ |
23170 | size_t size = sizeof (struct die_info); |
23171 | ||
23172 | if (num_attrs > 1) | |
23173 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23174 | |
b60c80d6 | 23175 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23176 | memset (die, 0, sizeof (struct die_info)); |
23177 | return (die); | |
23178 | } | |
2e276125 JB |
23179 | |
23180 | \f | |
a036ba48 | 23181 | |
c90ec28a | 23182 | /* Macro support. */ |
cf2c3c16 | 23183 | |
9eac9650 TT |
23184 | /* An overload of dwarf_decode_macros that finds the correct section |
23185 | and ensures it is read in before calling the other overload. */ | |
23186 | ||
23187 | static void | |
23188 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23189 | int section_is_gnu) | |
23190 | { | |
5e22e966 | 23191 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
9eac9650 | 23192 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5a0e026f | 23193 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23194 | unsigned int offset_size = cu->header.offset_size; |
23195 | struct dwarf2_section_info *section; | |
23196 | const char *section_name; | |
23197 | ||
23198 | if (cu->dwo_unit != nullptr) | |
23199 | { | |
23200 | if (section_is_gnu) | |
23201 | { | |
23202 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23203 | section_name = ".debug_macro.dwo"; | |
23204 | } | |
23205 | else | |
23206 | { | |
23207 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23208 | section_name = ".debug_macinfo.dwo"; | |
23209 | } | |
23210 | } | |
23211 | else | |
23212 | { | |
23213 | if (section_is_gnu) | |
23214 | { | |
5989a64e | 23215 | section = &dwarf2_per_objfile->per_bfd->macro; |
9eac9650 TT |
23216 | section_name = ".debug_macro"; |
23217 | } | |
23218 | else | |
23219 | { | |
5989a64e | 23220 | section = &dwarf2_per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23221 | section_name = ".debug_macinfo"; |
23222 | } | |
23223 | } | |
23224 | ||
23225 | section->read (objfile); | |
23226 | if (section->buffer == nullptr) | |
23227 | { | |
23228 | complaint (_("missing %s section"), section_name); | |
23229 | return; | |
23230 | } | |
23231 | ||
23232 | buildsym_compunit *builder = cu->get_builder (); | |
23233 | ||
23234 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
23235 | offset_size, offset, section_is_gnu); | |
23236 | } | |
23237 | ||
3019eac3 DE |
23238 | /* Return the .debug_loc section to use for CU. |
23239 | For DWO files use .debug_loc.dwo. */ | |
23240 | ||
23241 | static struct dwarf2_section_info * | |
23242 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23243 | { | |
5e22e966 | 23244 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 23245 | |
3019eac3 | 23246 | if (cu->dwo_unit) |
43988095 JK |
23247 | { |
23248 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23249 | |
43988095 JK |
23250 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23251 | } | |
5989a64e SM |
23252 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->per_bfd->loclists |
23253 | : &dwarf2_per_objfile->per_bfd->loc); | |
3019eac3 DE |
23254 | } |
23255 | ||
8cf6f0b1 TT |
23256 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23257 | ||
23258 | static void | |
23259 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23260 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23261 | const struct attribute *attr) |
8cf6f0b1 | 23262 | { |
5e22e966 | 23263 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 DE |
23264 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23265 | ||
96b79293 | 23266 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 | 23267 | |
a50264ba | 23268 | baton->per_objfile = dwarf2_per_objfile; |
8cf6f0b1 TT |
23269 | baton->per_cu = cu->per_cu; |
23270 | gdb_assert (baton->per_cu); | |
23271 | /* We don't know how long the location list is, but make sure we | |
23272 | don't run off the edge of the section. */ | |
3019eac3 DE |
23273 | baton->size = section->size - DW_UNSND (attr); |
23274 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23275 | if (cu->base_address.has_value ()) |
23276 | baton->base_address = *cu->base_address; | |
23277 | else | |
23278 | baton->base_address = 0; | |
f664829e | 23279 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23280 | } |
23281 | ||
4c2df51b | 23282 | static void |
ff39bb5e | 23283 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23284 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23285 | { |
5e22e966 | 23286 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
bb5ed363 | 23287 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 23288 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23289 | |
cd6c91b4 | 23290 | if (attr->form_is_section_offset () |
3019eac3 | 23291 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23292 | the section. If so, fall through to the complaint in the |
23293 | other branch. */ | |
2c7d5afc | 23294 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23295 | { |
0d53c4c4 | 23296 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23297 | |
8d749320 | 23298 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23299 | |
8cf6f0b1 | 23300 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23301 | |
2b24b6e4 | 23302 | if (!cu->base_address.has_value ()) |
b98664d3 | 23303 | complaint (_("Location list used without " |
3e43a32a | 23304 | "specifying the CU base address.")); |
4c2df51b | 23305 | |
f1e6e072 TT |
23306 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23307 | ? dwarf2_loclist_block_index | |
23308 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23309 | SYMBOL_LOCATION_BATON (sym) = baton; |
23310 | } | |
23311 | else | |
23312 | { | |
23313 | struct dwarf2_locexpr_baton *baton; | |
23314 | ||
8d749320 | 23315 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 23316 | baton->per_objfile = dwarf2_per_objfile; |
ae0d2f24 UW |
23317 | baton->per_cu = cu->per_cu; |
23318 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23319 | |
4fc6c0d5 | 23320 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23321 | { |
23322 | /* Note that we're just copying the block's data pointer | |
23323 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23324 | info_buffer for SYM's objfile; right now we never release |
23325 | that buffer, but when we do clean up properly this may | |
23326 | need to change. */ | |
0d53c4c4 DJ |
23327 | baton->size = DW_BLOCK (attr)->size; |
23328 | baton->data = DW_BLOCK (attr)->data; | |
23329 | } | |
23330 | else | |
23331 | { | |
23332 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23333 | sym->natural_name ()); |
0d53c4c4 | 23334 | baton->size = 0; |
0d53c4c4 | 23335 | } |
6e70227d | 23336 | |
f1e6e072 TT |
23337 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23338 | ? dwarf2_locexpr_block_index | |
23339 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23340 | SYMBOL_LOCATION_BATON (sym) = baton; |
23341 | } | |
4c2df51b | 23342 | } |
6502dd73 | 23343 | |
96408a79 SA |
23344 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
23345 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
23346 | CU_HEADERP first. */ | |
23347 | ||
23348 | static const struct comp_unit_head * | |
23349 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 23350 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 23351 | { |
d521ce57 | 23352 | const gdb_byte *info_ptr; |
96408a79 SA |
23353 | |
23354 | if (per_cu->cu) | |
23355 | return &per_cu->cu->header; | |
23356 | ||
9c541725 | 23357 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
23358 | |
23359 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
23360 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
23361 | rcuh_kind::COMPILE); | |
96408a79 SA |
23362 | |
23363 | return cu_headerp; | |
23364 | } | |
23365 | ||
09ba997f | 23366 | /* See read.h. */ |
ae0d2f24 | 23367 | |
98714339 | 23368 | int |
09ba997f | 23369 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23370 | { |
96408a79 SA |
23371 | struct comp_unit_head cu_header_local; |
23372 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 23373 | |
09ba997f | 23374 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23375 | |
23376 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
23377 | } |
23378 | ||
09ba997f | 23379 | /* See read.h. */ |
9eae7c52 TT |
23380 | |
23381 | int | |
09ba997f | 23382 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23383 | { |
96408a79 SA |
23384 | struct comp_unit_head cu_header_local; |
23385 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 23386 | |
09ba997f | 23387 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23388 | |
23389 | return cu_headerp->offset_size; | |
23390 | } | |
23391 | ||
09ba997f | 23392 | /* See read.h. */ |
96408a79 SA |
23393 | |
23394 | int | |
09ba997f | 23395 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
23396 | { |
23397 | struct comp_unit_head cu_header_local; | |
23398 | const struct comp_unit_head *cu_headerp; | |
23399 | ||
09ba997f | 23400 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23401 | |
23402 | if (cu_headerp->version == 2) | |
23403 | return cu_headerp->addr_size; | |
23404 | else | |
23405 | return cu_headerp->offset_size; | |
181cebd4 JK |
23406 | } |
23407 | ||
09ba997f | 23408 | /* See read.h. */ |
9aa1f1e3 | 23409 | |
09ba997f | 23410 | struct type * |
293e7e51 | 23411 | dwarf2_cu::addr_type () const |
9a49df9d | 23412 | { |
293e7e51 | 23413 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
23414 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23415 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 23416 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
23417 | |
23418 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23419 | return addr_type; | |
23420 | ||
09ba997f | 23421 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23422 | return addr_type; |
23423 | } | |
23424 | ||
22b6cd70 TT |
23425 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23426 | the index of the result, and that searches a vector. It will | |
23427 | return a result even if the offset in question does not actually | |
23428 | occur in any CU. This is separate so that it can be unit | |
23429 | tested. */ | |
ae038cb0 | 23430 | |
22b6cd70 TT |
23431 | static int |
23432 | dwarf2_find_containing_comp_unit | |
23433 | (sect_offset sect_off, | |
23434 | unsigned int offset_in_dwz, | |
23435 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23436 | { |
ae038cb0 DJ |
23437 | int low, high; |
23438 | ||
ae038cb0 | 23439 | low = 0; |
22b6cd70 | 23440 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23441 | while (high > low) |
23442 | { | |
36586728 | 23443 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23444 | int mid = low + (high - low) / 2; |
9a619af0 | 23445 | |
22b6cd70 | 23446 | mid_cu = all_comp_units[mid]; |
36586728 | 23447 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23448 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23449 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23450 | high = mid; |
23451 | else | |
23452 | low = mid + 1; | |
23453 | } | |
23454 | gdb_assert (low == high); | |
22b6cd70 TT |
23455 | return low; |
23456 | } | |
23457 | ||
23458 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23459 | the DIE at OFFSET. Raises an error on failure. */ | |
23460 | ||
23461 | static struct dwarf2_per_cu_data * | |
23462 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23463 | unsigned int offset_in_dwz, | |
23464 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
23465 | { | |
23466 | int low | |
23467 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
5989a64e | 23468 | dwarf2_per_objfile->per_bfd->all_comp_units); |
22b6cd70 | 23469 | struct dwarf2_per_cu_data *this_cu |
5989a64e | 23470 | = dwarf2_per_objfile->per_bfd->all_comp_units[low]; |
22b6cd70 | 23471 | |
45b8ae0c | 23472 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23473 | { |
36586728 | 23474 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23475 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23476 | "offset %s [in module %s]"), |
23477 | sect_offset_str (sect_off), | |
ed2dc618 | 23478 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 23479 | |
5989a64e | 23480 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 23481 | <= sect_off); |
5989a64e | 23482 | return dwarf2_per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
23483 | } |
23484 | else | |
23485 | { | |
5989a64e | 23486 | if (low == dwarf2_per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 23487 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23488 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23489 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23490 | return this_cu; |
23491 | } | |
23492 | } | |
23493 | ||
22b6cd70 TT |
23494 | #if GDB_SELF_TEST |
23495 | ||
23496 | namespace selftests { | |
23497 | namespace find_containing_comp_unit { | |
23498 | ||
23499 | static void | |
23500 | run_test () | |
23501 | { | |
23502 | struct dwarf2_per_cu_data one {}; | |
23503 | struct dwarf2_per_cu_data two {}; | |
23504 | struct dwarf2_per_cu_data three {}; | |
23505 | struct dwarf2_per_cu_data four {}; | |
23506 | ||
23507 | one.length = 5; | |
23508 | two.sect_off = sect_offset (one.length); | |
23509 | two.length = 7; | |
23510 | ||
23511 | three.length = 5; | |
23512 | three.is_dwz = 1; | |
23513 | four.sect_off = sect_offset (three.length); | |
23514 | four.length = 7; | |
23515 | four.is_dwz = 1; | |
23516 | ||
23517 | std::vector<dwarf2_per_cu_data *> units; | |
23518 | units.push_back (&one); | |
23519 | units.push_back (&two); | |
23520 | units.push_back (&three); | |
23521 | units.push_back (&four); | |
23522 | ||
23523 | int result; | |
23524 | ||
23525 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23526 | SELF_CHECK (units[result] == &one); | |
23527 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23528 | SELF_CHECK (units[result] == &one); | |
23529 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23530 | SELF_CHECK (units[result] == &two); | |
23531 | ||
23532 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23533 | SELF_CHECK (units[result] == &three); | |
23534 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23535 | SELF_CHECK (units[result] == &three); | |
23536 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23537 | SELF_CHECK (units[result] == &four); | |
23538 | } | |
23539 | ||
23540 | } | |
23541 | } | |
23542 | ||
23543 | #endif /* GDB_SELF_TEST */ | |
23544 | ||
9e021579 | 23545 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 23546 | |
9e021579 SM |
23547 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
23548 | dwarf2_per_objfile *per_objfile) | |
23549 | : per_cu (per_cu), | |
23550 | per_objfile (per_objfile), | |
9068261f AB |
23551 | mark (false), |
23552 | has_loclist (false), | |
23553 | checked_producer (false), | |
23554 | producer_is_gxx_lt_4_6 (false), | |
23555 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23556 | producer_is_icc (false), |
9068261f | 23557 | producer_is_icc_lt_14 (false), |
c258c396 | 23558 | producer_is_codewarrior (false), |
9068261f | 23559 | processing_has_namespace_info (false) |
93311388 | 23560 | { |
fcd3b13d SM |
23561 | per_cu->cu = this; |
23562 | } | |
23563 | ||
23564 | /* Destroy a dwarf2_cu. */ | |
23565 | ||
23566 | dwarf2_cu::~dwarf2_cu () | |
23567 | { | |
23568 | per_cu->cu = NULL; | |
9816fde3 JK |
23569 | } |
23570 | ||
23571 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23572 | ||
23573 | static void | |
95554aad TT |
23574 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23575 | enum language pretend_language) | |
9816fde3 JK |
23576 | { |
23577 | struct attribute *attr; | |
23578 | ||
23579 | /* Set the language we're debugging. */ | |
23580 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23581 | if (attr != nullptr) |
9816fde3 JK |
23582 | set_cu_language (DW_UNSND (attr), cu); |
23583 | else | |
9cded63f | 23584 | { |
95554aad | 23585 | cu->language = pretend_language; |
9cded63f TT |
23586 | cu->language_defn = language_def (cu->language); |
23587 | } | |
dee91e82 | 23588 | |
7d45c7c3 | 23589 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23590 | } |
23591 | ||
ae038cb0 DJ |
23592 | /* Increase the age counter on each cached compilation unit, and free |
23593 | any that are too old. */ | |
23594 | ||
23595 | static void | |
ed2dc618 | 23596 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
23597 | { |
23598 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
23599 | ||
5989a64e SM |
23600 | dwarf2_clear_marks (dwarf2_per_objfile->per_bfd->read_in_chain); |
23601 | per_cu = dwarf2_per_objfile->per_bfd->read_in_chain; | |
ae038cb0 DJ |
23602 | while (per_cu != NULL) |
23603 | { | |
23604 | per_cu->cu->last_used ++; | |
b4f54984 | 23605 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
23606 | dwarf2_mark (per_cu->cu); |
23607 | per_cu = per_cu->cu->read_in_chain; | |
23608 | } | |
23609 | ||
5989a64e SM |
23610 | per_cu = dwarf2_per_objfile->per_bfd->read_in_chain; |
23611 | last_chain = &dwarf2_per_objfile->per_bfd->read_in_chain; | |
ae038cb0 DJ |
23612 | while (per_cu != NULL) |
23613 | { | |
23614 | struct dwarf2_per_cu_data *next_cu; | |
23615 | ||
23616 | next_cu = per_cu->cu->read_in_chain; | |
23617 | ||
23618 | if (!per_cu->cu->mark) | |
23619 | { | |
fcd3b13d | 23620 | delete per_cu->cu; |
ae038cb0 DJ |
23621 | *last_chain = next_cu; |
23622 | } | |
23623 | else | |
23624 | last_chain = &per_cu->cu->read_in_chain; | |
23625 | ||
23626 | per_cu = next_cu; | |
23627 | } | |
23628 | } | |
23629 | ||
23630 | /* Remove a single compilation unit from the cache. */ | |
23631 | ||
23632 | static void | |
120ce1b5 SM |
23633 | free_one_cached_comp_unit (dwarf2_per_cu_data *target_per_cu, |
23634 | dwarf2_per_objfile *dwarf2_per_objfile) | |
ae038cb0 DJ |
23635 | { |
23636 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
23637 | ||
5989a64e SM |
23638 | per_cu = dwarf2_per_objfile->per_bfd->read_in_chain; |
23639 | last_chain = &dwarf2_per_objfile->per_bfd->read_in_chain; | |
ae038cb0 DJ |
23640 | while (per_cu != NULL) |
23641 | { | |
23642 | struct dwarf2_per_cu_data *next_cu; | |
23643 | ||
23644 | next_cu = per_cu->cu->read_in_chain; | |
23645 | ||
dee91e82 | 23646 | if (per_cu == target_per_cu) |
ae038cb0 | 23647 | { |
fcd3b13d | 23648 | delete per_cu->cu; |
dee91e82 | 23649 | per_cu->cu = NULL; |
ae038cb0 DJ |
23650 | *last_chain = next_cu; |
23651 | break; | |
23652 | } | |
23653 | else | |
23654 | last_chain = &per_cu->cu->read_in_chain; | |
23655 | ||
23656 | per_cu = next_cu; | |
23657 | } | |
23658 | } | |
23659 | ||
dee91e82 DE |
23660 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23661 | We store these in a hash table separate from the DIEs, and preserve them | |
23662 | when the DIEs are flushed out of cache. | |
23663 | ||
23664 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23665 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23666 | or the type may come from a DWO file. Furthermore, while it's more logical |
23667 | to use per_cu->section+offset, with Fission the section with the data is in | |
23668 | the DWO file but we don't know that section at the point we need it. | |
23669 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23670 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23671 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23672 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23673 | |
dee91e82 | 23674 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23675 | { |
dee91e82 | 23676 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23677 | sect_offset sect_off; |
1c379e20 DJ |
23678 | struct type *type; |
23679 | }; | |
23680 | ||
dee91e82 | 23681 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23682 | |
23683 | static hashval_t | |
dee91e82 | 23684 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23685 | { |
9a3c8263 SM |
23686 | const struct dwarf2_per_cu_offset_and_type *ofs |
23687 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23688 | |
9c541725 | 23689 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23690 | } |
23691 | ||
dee91e82 | 23692 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23693 | |
23694 | static int | |
dee91e82 | 23695 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23696 | { |
9a3c8263 SM |
23697 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23698 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23699 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23700 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23701 | |
dee91e82 | 23702 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23703 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23704 | } |
23705 | ||
23706 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23707 | table if necessary. For convenience, return TYPE. |
23708 | ||
23709 | The DIEs reading must have careful ordering to: | |
85102364 | 23710 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23711 | reading current DIE. |
23712 | * Not trying to dereference contents of still incompletely read in types | |
23713 | while reading in other DIEs. | |
23714 | * Enable referencing still incompletely read in types just by a pointer to | |
23715 | the type without accessing its fields. | |
23716 | ||
23717 | Therefore caller should follow these rules: | |
23718 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23719 | before building the type and calling set_die_type. | |
e71ec853 | 23720 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23721 | possible before fetching more types to complete the current type. |
23722 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23723 | |
f792889a | 23724 | static struct type * |
1c379e20 DJ |
23725 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23726 | { | |
5e22e966 | 23727 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 23728 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23729 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23730 | struct attribute *attr; |
23731 | struct dynamic_prop prop; | |
1c379e20 | 23732 | |
b4ba55a1 JB |
23733 | /* For Ada types, make sure that the gnat-specific data is always |
23734 | initialized (if not already set). There are a few types where | |
23735 | we should not be doing so, because the type-specific area is | |
23736 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23737 | where the type-specific area is used to store the floatformat). | |
23738 | But this is not a problem, because the gnat-specific information | |
23739 | is actually not needed for these types. */ | |
23740 | if (need_gnat_info (cu) | |
78134374 SM |
23741 | && type->code () != TYPE_CODE_FUNC |
23742 | && type->code () != TYPE_CODE_FLT | |
23743 | && type->code () != TYPE_CODE_METHODPTR | |
23744 | && type->code () != TYPE_CODE_MEMBERPTR | |
23745 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23746 | && !HAVE_GNAT_AUX_INFO (type)) |
23747 | INIT_GNAT_SPECIFIC (type); | |
23748 | ||
3f2f83dd KB |
23749 | /* Read DW_AT_allocated and set in type. */ |
23750 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23751 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23752 | { |
293e7e51 | 23753 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23754 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23755 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd KB |
23756 | } |
23757 | else if (attr != NULL) | |
23758 | { | |
b98664d3 | 23759 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23760 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23761 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23762 | } |
23763 | ||
23764 | /* Read DW_AT_associated and set in type. */ | |
23765 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23766 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23767 | { |
293e7e51 | 23768 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23769 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23770 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd KB |
23771 | } |
23772 | else if (attr != NULL) | |
23773 | { | |
b98664d3 | 23774 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23775 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23776 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23777 | } |
23778 | ||
3cdcd0ce JB |
23779 | /* Read DW_AT_data_location and set in type. */ |
23780 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 23781 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 23782 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 23783 | |
ae090bdb SM |
23784 | if (dwarf2_per_objfile->die_type_hash == NULL) |
23785 | dwarf2_per_objfile->die_type_hash | |
0335378b TT |
23786 | = htab_up (htab_create_alloc (127, |
23787 | per_cu_offset_and_type_hash, | |
23788 | per_cu_offset_and_type_eq, | |
23789 | NULL, xcalloc, xfree)); | |
1c379e20 | 23790 | |
dee91e82 | 23791 | ofs.per_cu = cu->per_cu; |
9c541725 | 23792 | ofs.sect_off = die->sect_off; |
1c379e20 | 23793 | ofs.type = type; |
dee91e82 | 23794 | slot = (struct dwarf2_per_cu_offset_and_type **) |
ae090bdb | 23795 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23796 | if (*slot) |
b98664d3 | 23797 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23798 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23799 | *slot = XOBNEW (&objfile->objfile_obstack, |
23800 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23801 | **slot = ofs; |
f792889a | 23802 | return type; |
1c379e20 DJ |
23803 | } |
23804 | ||
9c541725 | 23805 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23806 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23807 | |
23808 | static struct type * | |
9c541725 | 23809 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 SM |
23810 | dwarf2_per_cu_data *per_cu, |
23811 | dwarf2_per_objfile *dwarf2_per_objfile) | |
1c379e20 | 23812 | { |
dee91e82 | 23813 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 23814 | |
ae090bdb | 23815 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23816 | return NULL; |
1c379e20 | 23817 | |
dee91e82 | 23818 | ofs.per_cu = per_cu; |
9c541725 | 23819 | ofs.sect_off = sect_off; |
9a3c8263 | 23820 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
ae090bdb | 23821 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23822 | if (slot) |
23823 | return slot->type; | |
23824 | else | |
23825 | return NULL; | |
23826 | } | |
23827 | ||
02142a6c | 23828 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23829 | or return NULL if DIE does not have a saved type. */ |
23830 | ||
23831 | static struct type * | |
23832 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23833 | { | |
aa66c379 | 23834 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
23835 | } |
23836 | ||
10b3939b DJ |
23837 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23838 | ||
23839 | static void | |
23840 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23841 | struct dwarf2_per_cu_data *ref_per_cu) | |
23842 | { | |
23843 | void **slot; | |
23844 | ||
23845 | if (cu->dependencies == NULL) | |
23846 | cu->dependencies | |
23847 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23848 | NULL, &cu->comp_unit_obstack, | |
23849 | hashtab_obstack_allocate, | |
23850 | dummy_obstack_deallocate); | |
23851 | ||
23852 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23853 | if (*slot == NULL) | |
23854 | *slot = ref_per_cu; | |
23855 | } | |
1c379e20 | 23856 | |
f504f079 DE |
23857 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23858 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23859 | cache that we must keep because we are keeping CU. */ |
23860 | ||
10b3939b DJ |
23861 | static int |
23862 | dwarf2_mark_helper (void **slot, void *data) | |
23863 | { | |
23864 | struct dwarf2_per_cu_data *per_cu; | |
23865 | ||
23866 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23867 | |
23868 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23869 | reading of the chain. As such dependencies remain valid it is not much | |
23870 | useful to track and undo them during QUIT cleanups. */ | |
23871 | if (per_cu->cu == NULL) | |
23872 | return 1; | |
23873 | ||
10b3939b DJ |
23874 | if (per_cu->cu->mark) |
23875 | return 1; | |
9068261f | 23876 | per_cu->cu->mark = true; |
10b3939b DJ |
23877 | |
23878 | if (per_cu->cu->dependencies != NULL) | |
23879 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23880 | ||
23881 | return 1; | |
23882 | } | |
23883 | ||
f504f079 DE |
23884 | /* Set the mark field in CU and in every other compilation unit in the |
23885 | cache that we must keep because we are keeping CU. */ | |
23886 | ||
ae038cb0 DJ |
23887 | static void |
23888 | dwarf2_mark (struct dwarf2_cu *cu) | |
23889 | { | |
23890 | if (cu->mark) | |
23891 | return; | |
9068261f | 23892 | cu->mark = true; |
10b3939b DJ |
23893 | if (cu->dependencies != NULL) |
23894 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23895 | } |
23896 | ||
23897 | static void | |
23898 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23899 | { | |
23900 | while (per_cu) | |
23901 | { | |
9068261f | 23902 | per_cu->cu->mark = false; |
ae038cb0 DJ |
23903 | per_cu = per_cu->cu->read_in_chain; |
23904 | } | |
72bf9492 DJ |
23905 | } |
23906 | ||
72bf9492 DJ |
23907 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23908 | is its offset in .debug_info for this objfile. */ | |
23909 | ||
23910 | static hashval_t | |
23911 | partial_die_hash (const void *item) | |
23912 | { | |
9a3c8263 SM |
23913 | const struct partial_die_info *part_die |
23914 | = (const struct partial_die_info *) item; | |
9a619af0 | 23915 | |
9c541725 | 23916 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23917 | } |
23918 | ||
23919 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23920 | are equal if they have the same offset. */ | |
23921 | ||
23922 | static int | |
23923 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23924 | { | |
9a3c8263 SM |
23925 | const struct partial_die_info *part_die_lhs |
23926 | = (const struct partial_die_info *) item_lhs; | |
23927 | const struct partial_die_info *part_die_rhs | |
23928 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23929 | |
9c541725 | 23930 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23931 | } |
23932 | ||
3c3bb058 AB |
23933 | struct cmd_list_element *set_dwarf_cmdlist; |
23934 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 23935 | |
9291a0cd | 23936 | static void |
cd4fb1b2 SM |
23937 | show_check_physname (struct ui_file *file, int from_tty, |
23938 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23939 | { |
cd4fb1b2 SM |
23940 | fprintf_filtered (file, |
23941 | _("Whether to check \"physname\" is %s.\n"), | |
23942 | value); | |
9291a0cd TT |
23943 | } |
23944 | ||
6c265988 | 23945 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23946 | void |
6c265988 | 23947 | _initialize_dwarf2_read () |
9291a0cd | 23948 | { |
0743fc83 | 23949 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 23950 | Set DWARF specific variables.\n\ |
590042fc | 23951 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
23952 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23953 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23954 | |
0743fc83 | 23955 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
23956 | Show DWARF specific variables.\n\ |
23957 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
23958 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23959 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23960 | |
cd4fb1b2 SM |
23961 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23962 | &dwarf_max_cache_age, _("\ | |
23963 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23964 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23965 | A higher limit means that cached compilation units will be stored\n\ | |
23966 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23967 | caching, which can slow down startup."), | |
23968 | NULL, | |
23969 | show_dwarf_max_cache_age, | |
23970 | &set_dwarf_cmdlist, | |
23971 | &show_dwarf_cmdlist); | |
156942c7 | 23972 | |
cd4fb1b2 SM |
23973 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23974 | Set debugging of the DWARF reader."), _("\ | |
23975 | Show debugging of the DWARF reader."), _("\ | |
23976 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23977 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23978 | information. A value greater than 1 provides more verbose information."), | |
23979 | NULL, | |
23980 | NULL, | |
23981 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23982 | |
cd4fb1b2 SM |
23983 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23984 | Set debugging of the DWARF DIE reader."), _("\ | |
23985 | Show debugging of the DWARF DIE reader."), _("\ | |
23986 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23987 | The value is the maximum depth to print."), | |
23988 | NULL, | |
23989 | NULL, | |
23990 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23991 | |
cd4fb1b2 SM |
23992 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23993 | Set debugging of the dwarf line reader."), _("\ | |
23994 | Show debugging of the dwarf line reader."), _("\ | |
23995 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23996 | A value of 1 (one) provides basic information.\n\ | |
23997 | A value greater than 1 provides more verbose information."), | |
23998 | NULL, | |
23999 | NULL, | |
24000 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24001 | |
cd4fb1b2 SM |
24002 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24003 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24004 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24005 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24006 | the demangler."), | |
24007 | NULL, show_check_physname, | |
24008 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24009 | |
e615022a DE |
24010 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24011 | no_class, &use_deprecated_index_sections, _("\ | |
24012 | Set whether to use deprecated gdb_index sections."), _("\ | |
24013 | Show whether to use deprecated gdb_index sections."), _("\ | |
24014 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24015 | Normally they are ignored either because of a missing feature or\n\ | |
24016 | performance issue.\n\ | |
24017 | Warning: This option must be enabled before gdb reads the file."), | |
24018 | NULL, | |
24019 | NULL, | |
24020 | &setlist, &showlist); | |
24021 | ||
f1e6e072 TT |
24022 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24023 | &dwarf2_locexpr_funcs); | |
24024 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24025 | &dwarf2_loclist_funcs); | |
24026 | ||
24027 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24028 | &dwarf2_block_frame_base_locexpr_funcs); | |
24029 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24030 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24031 | |
24032 | #if GDB_SELF_TEST | |
24033 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24034 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24035 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24036 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24037 | #endif |
6502dd73 | 24038 | } |