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 | |
405 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
406 | ||
c24bdb02 KS |
407 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
408 | Create the set of symtabs used by this TU, or if this TU is sharing | |
409 | symtabs with another TU and the symtabs have already been created | |
410 | then restore those symtabs in the line header. | |
411 | We don't need the pc/line-number mapping for type units. */ | |
412 | void setup_type_unit_groups (struct die_info *die); | |
413 | ||
414 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
415 | buildsym_compunit constructor. */ | |
416 | struct compunit_symtab *start_symtab (const char *name, | |
417 | const char *comp_dir, | |
418 | CORE_ADDR low_pc); | |
419 | ||
420 | /* Reset the builder. */ | |
421 | void reset_builder () { m_builder.reset (); } | |
422 | ||
293e7e51 SM |
423 | /* Return a type that is a generic pointer type, the size of which |
424 | matches the address size given in the compilation unit header for | |
425 | this CU. */ | |
426 | struct type *addr_type () const; | |
427 | ||
428 | /* Find an integer type the same size as the address size given in | |
429 | the compilation unit header for this CU. UNSIGNED_P controls if | |
430 | the integer is unsigned or not. */ | |
431 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
432 | ||
d00adf39 | 433 | /* The header of the compilation unit. */ |
fcd3b13d | 434 | struct comp_unit_head header {}; |
e142c38c | 435 | |
d00adf39 | 436 | /* Base address of this compilation unit. */ |
2b24b6e4 | 437 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 438 | |
e142c38c | 439 | /* The language we are debugging. */ |
fcd3b13d SM |
440 | enum language language = language_unknown; |
441 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 442 | |
fcd3b13d | 443 | const char *producer = nullptr; |
b0f35d58 | 444 | |
c24bdb02 | 445 | private: |
804d2729 TT |
446 | /* The symtab builder for this CU. This is only non-NULL when full |
447 | symbols are being read. */ | |
c24bdb02 | 448 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 449 | |
c24bdb02 | 450 | public: |
e142c38c DJ |
451 | /* The generic symbol table building routines have separate lists for |
452 | file scope symbols and all all other scopes (local scopes). So | |
453 | we need to select the right one to pass to add_symbol_to_list(). | |
454 | We do it by keeping a pointer to the correct list in list_in_scope. | |
455 | ||
456 | FIXME: The original dwarf code just treated the file scope as the | |
457 | first local scope, and all other local scopes as nested local | |
458 | scopes, and worked fine. Check to see if we really need to | |
459 | distinguish these in buildsym.c. */ | |
fcd3b13d | 460 | struct pending **list_in_scope = nullptr; |
e142c38c | 461 | |
b64f50a1 JK |
462 | /* Hash table holding all the loaded partial DIEs |
463 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 464 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
465 | |
466 | /* Storage for things with the same lifetime as this read-in compilation | |
467 | unit, including partial DIEs. */ | |
fcd3b13d | 468 | auto_obstack comp_unit_obstack; |
72bf9492 | 469 | |
69d751e3 | 470 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
471 | struct dwarf2_per_cu_data *per_cu; |
472 | ||
9e021579 SM |
473 | /* The dwarf2_per_objfile that owns this. */ |
474 | struct dwarf2_per_objfile *per_objfile; | |
475 | ||
ae038cb0 | 476 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 477 | int last_used = 0; |
ae038cb0 | 478 | |
b64f50a1 JK |
479 | /* A hash table of DIE cu_offset for following references with |
480 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 481 | htab_t die_hash = nullptr; |
10b3939b DJ |
482 | |
483 | /* Full DIEs if read in. */ | |
fcd3b13d | 484 | struct die_info *dies = nullptr; |
10b3939b DJ |
485 | |
486 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
487 | units referenced by this one. Only set during full symbol processing; | |
488 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 489 | htab_t dependencies = nullptr; |
10b3939b | 490 | |
cb1df416 | 491 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 492 | struct line_header *line_header = nullptr; |
4c8aa72d | 493 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 494 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
495 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
496 | to the line header as long as this DIE is being processed. See | |
497 | process_die_scope. */ | |
fcd3b13d | 498 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 499 | |
3da10d80 KS |
500 | /* A list of methods which need to have physnames computed |
501 | after all type information has been read. */ | |
c89b44cd | 502 | std::vector<delayed_method_info> method_list; |
3da10d80 | 503 | |
96408a79 | 504 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 505 | htab_t call_site_htab = nullptr; |
96408a79 | 506 | |
034e5797 DE |
507 | /* Non-NULL if this CU came from a DWO file. |
508 | There is an invariant here that is important to remember: | |
509 | Except for attributes copied from the top level DIE in the "main" | |
510 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 511 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
512 | Either there isn't a DWO file (in which case this is NULL and the point |
513 | is moot), or there is and either we're not going to read it (in which | |
514 | case this is NULL) or there is and we are reading it (in which case this | |
515 | is non-NULL). */ | |
fcd3b13d | 516 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 517 | |
18a8505e | 518 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 519 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 520 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 521 | |
18a8505e | 522 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 523 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 524 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
525 | be used without needing to know whether DWO files are in use or not. |
526 | N.B. This does not apply to DW_AT_ranges appearing in | |
527 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
528 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 529 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 530 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 531 | ULONGEST ranges_base = 0; |
2e3cf129 | 532 | |
41144253 | 533 | /* The DW_AT_loclists_base attribute if present. */ |
534 | ULONGEST loclist_base = 0; | |
535 | ||
c9317f21 TT |
536 | /* When reading debug info generated by older versions of rustc, we |
537 | have to rewrite some union types to be struct types with a | |
538 | variant part. This rewriting must be done after the CU is fully | |
539 | read in, because otherwise at the point of rewriting some struct | |
540 | type might not have been fully processed. So, we keep a list of | |
541 | all such types here and process them after expansion. */ | |
542 | std::vector<struct type *> rust_unions; | |
543 | ||
18a8505e AT |
544 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
545 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
546 | value is often implicit and is the size of the header of | |
547 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
548 | gdb::optional<ULONGEST> str_offsets_base; | |
549 | ||
ae038cb0 | 550 | /* Mark used when releasing cached dies. */ |
9068261f | 551 | bool mark : 1; |
ae038cb0 | 552 | |
8be455d7 JK |
553 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
554 | This test is imperfect as there may exist optimized debug code not using | |
555 | any location list and still facing inlining issues if handled as | |
556 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 557 | bool has_loclist : 1; |
ba919b58 | 558 | |
9068261f | 559 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
560 | if all the producer_is_* fields are valid. This information is cached |
561 | because profiling CU expansion showed excessive time spent in | |
562 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
563 | bool checked_producer : 1; |
564 | bool producer_is_gxx_lt_4_6 : 1; | |
565 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 566 | bool producer_is_icc : 1; |
9068261f | 567 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 568 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 569 | |
9068261f | 570 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
571 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
572 | this information, but later versions do. */ | |
573 | ||
9068261f | 574 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
575 | |
576 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
577 | |
578 | /* If this CU was inherited by another CU (via specification, | |
579 | abstract_origin, etc), this is the ancestor CU. */ | |
580 | dwarf2_cu *ancestor; | |
581 | ||
582 | /* Get the buildsym_compunit for this CU. */ | |
583 | buildsym_compunit *get_builder () | |
584 | { | |
585 | /* If this CU has a builder associated with it, use that. */ | |
586 | if (m_builder != nullptr) | |
587 | return m_builder.get (); | |
588 | ||
589 | /* Otherwise, search ancestors for a valid builder. */ | |
590 | if (ancestor != nullptr) | |
591 | return ancestor->get_builder (); | |
592 | ||
593 | return nullptr; | |
594 | } | |
e7c27a73 DJ |
595 | }; |
596 | ||
094b34ac DE |
597 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
598 | This includes type_unit_group and quick_file_names. */ | |
599 | ||
600 | struct stmt_list_hash | |
601 | { | |
602 | /* The DWO unit this table is from or NULL if there is none. */ | |
603 | struct dwo_unit *dwo_unit; | |
604 | ||
605 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 606 | sect_offset line_sect_off; |
094b34ac DE |
607 | }; |
608 | ||
5989a64e | 609 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
610 | an object of this type. This contains elements of type unit groups |
611 | that can be shared across objfiles. The non-shareable parts are in | |
612 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
613 | |
614 | struct type_unit_group | |
615 | { | |
0186c6a7 | 616 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
617 | To simplify things we create an artificial CU that "includes" all the |
618 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 619 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
620 | struct dwarf2_per_cu_data per_cu; |
621 | ||
0186c6a7 DE |
622 | /* The TUs that share this DW_AT_stmt_list entry. |
623 | This is added to while parsing type units to build partial symtabs, | |
624 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 625 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 626 | |
094b34ac DE |
627 | /* The data used to construct the hash key. */ |
628 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
629 | }; |
630 | ||
73869dc2 | 631 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
632 | |
633 | struct dwo_sections | |
634 | { | |
635 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
636 | struct dwarf2_section_info line; |
637 | struct dwarf2_section_info loc; | |
43988095 | 638 | struct dwarf2_section_info loclists; |
09262596 DE |
639 | struct dwarf2_section_info macinfo; |
640 | struct dwarf2_section_info macro; | |
3019eac3 DE |
641 | struct dwarf2_section_info str; |
642 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
643 | /* In the case of a virtual DWO file, these two are unused. */ |
644 | struct dwarf2_section_info info; | |
fd5866f6 | 645 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
646 | }; |
647 | ||
c88ee1f0 | 648 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
649 | |
650 | struct dwo_unit | |
651 | { | |
652 | /* Backlink to the containing struct dwo_file. */ | |
653 | struct dwo_file *dwo_file; | |
654 | ||
655 | /* The "id" that distinguishes this CU/TU. | |
656 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
657 | Since signatures came first, we stick with it for consistency. */ | |
658 | ULONGEST signature; | |
659 | ||
660 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 661 | struct dwarf2_section_info *section; |
3019eac3 | 662 | |
9c541725 PA |
663 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
664 | sect_offset sect_off; | |
3019eac3 DE |
665 | unsigned int length; |
666 | ||
667 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
668 | cu_offset type_offset_in_tu; | |
669 | }; | |
670 | ||
73869dc2 DE |
671 | /* include/dwarf2.h defines the DWP section codes. |
672 | It defines a max value but it doesn't define a min value, which we | |
673 | use for error checking, so provide one. */ | |
674 | ||
675 | enum dwp_v2_section_ids | |
676 | { | |
677 | DW_SECT_MIN = 1 | |
678 | }; | |
679 | ||
80626a55 | 680 | /* Data for one DWO file. |
57d63ce2 DE |
681 | |
682 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
683 | appears in a DWP file). DWP files don't really have DWO files per se - | |
684 | comdat folding of types "loses" the DWO file they came from, and from | |
685 | a high level view DWP files appear to contain a mass of random types. | |
686 | However, to maintain consistency with the non-DWP case we pretend DWP | |
687 | files contain virtual DWO files, and we assign each TU with one virtual | |
688 | DWO file (generally based on the line and abbrev section offsets - | |
689 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
690 | |
691 | struct dwo_file | |
692 | { | |
51ac9db5 SM |
693 | dwo_file () = default; |
694 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
695 | ||
18a8505e | 696 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
697 | For virtual DWO files the name is constructed from the section offsets |
698 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
699 | from related CU+TUs. */ | |
51ac9db5 | 700 | const char *dwo_name = nullptr; |
0ac5b59e DE |
701 | |
702 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 703 | const char *comp_dir = nullptr; |
3019eac3 | 704 | |
80626a55 DE |
705 | /* The bfd, when the file is open. Otherwise this is NULL. |
706 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 707 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 708 | |
73869dc2 DE |
709 | /* The sections that make up this DWO file. |
710 | Remember that for virtual DWO files in DWP V2, these are virtual | |
711 | sections (for lack of a better name). */ | |
51ac9db5 | 712 | struct dwo_sections sections {}; |
3019eac3 | 713 | |
33c5cd75 DB |
714 | /* The CUs in the file. |
715 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
716 | an extension to handle LLVM's Link Time Optimization output (where | |
717 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 718 | htab_up cus; |
3019eac3 DE |
719 | |
720 | /* Table of TUs in the file. | |
721 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 722 | htab_up tus; |
3019eac3 DE |
723 | }; |
724 | ||
80626a55 DE |
725 | /* These sections are what may appear in a DWP file. */ |
726 | ||
727 | struct dwp_sections | |
728 | { | |
73869dc2 | 729 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
730 | struct dwarf2_section_info str; |
731 | struct dwarf2_section_info cu_index; | |
732 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
733 | |
734 | /* These are only used by DWP version 2 files. | |
735 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
736 | sections are referenced by section number, and are not recorded here. | |
737 | In DWP version 2 there is at most one copy of all these sections, each | |
738 | section being (effectively) comprised of the concatenation of all of the | |
739 | individual sections that exist in the version 1 format. | |
740 | To keep the code simple we treat each of these concatenated pieces as a | |
741 | section itself (a virtual section?). */ | |
742 | struct dwarf2_section_info abbrev; | |
743 | struct dwarf2_section_info info; | |
744 | struct dwarf2_section_info line; | |
745 | struct dwarf2_section_info loc; | |
746 | struct dwarf2_section_info macinfo; | |
747 | struct dwarf2_section_info macro; | |
748 | struct dwarf2_section_info str_offsets; | |
749 | struct dwarf2_section_info types; | |
80626a55 DE |
750 | }; |
751 | ||
73869dc2 DE |
752 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
753 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 754 | |
73869dc2 | 755 | struct virtual_v1_dwo_sections |
80626a55 DE |
756 | { |
757 | struct dwarf2_section_info abbrev; | |
758 | struct dwarf2_section_info line; | |
759 | struct dwarf2_section_info loc; | |
760 | struct dwarf2_section_info macinfo; | |
761 | struct dwarf2_section_info macro; | |
762 | struct dwarf2_section_info str_offsets; | |
763 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 764 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
765 | struct dwarf2_section_info info_or_types; |
766 | }; | |
767 | ||
73869dc2 DE |
768 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
769 | In version 2, the sections of the DWO files are concatenated together | |
770 | and stored in one section of that name. Thus each ELF section contains | |
771 | several "virtual" sections. */ | |
772 | ||
773 | struct virtual_v2_dwo_sections | |
774 | { | |
775 | bfd_size_type abbrev_offset; | |
776 | bfd_size_type abbrev_size; | |
777 | ||
778 | bfd_size_type line_offset; | |
779 | bfd_size_type line_size; | |
780 | ||
781 | bfd_size_type loc_offset; | |
782 | bfd_size_type loc_size; | |
783 | ||
784 | bfd_size_type macinfo_offset; | |
785 | bfd_size_type macinfo_size; | |
786 | ||
787 | bfd_size_type macro_offset; | |
788 | bfd_size_type macro_size; | |
789 | ||
790 | bfd_size_type str_offsets_offset; | |
791 | bfd_size_type str_offsets_size; | |
792 | ||
793 | /* Each DWP hash table entry records one CU or one TU. | |
794 | That is recorded here, and copied to dwo_unit.section. */ | |
795 | bfd_size_type info_or_types_offset; | |
796 | bfd_size_type info_or_types_size; | |
797 | }; | |
798 | ||
80626a55 DE |
799 | /* Contents of DWP hash tables. */ |
800 | ||
801 | struct dwp_hash_table | |
802 | { | |
73869dc2 | 803 | uint32_t version, nr_columns; |
80626a55 | 804 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
805 | const gdb_byte *hash_table, *unit_table; |
806 | union | |
807 | { | |
808 | struct | |
809 | { | |
810 | const gdb_byte *indices; | |
811 | } v1; | |
812 | struct | |
813 | { | |
814 | /* This is indexed by column number and gives the id of the section | |
815 | in that column. */ | |
816 | #define MAX_NR_V2_DWO_SECTIONS \ | |
817 | (1 /* .debug_info or .debug_types */ \ | |
818 | + 1 /* .debug_abbrev */ \ | |
819 | + 1 /* .debug_line */ \ | |
820 | + 1 /* .debug_loc */ \ | |
821 | + 1 /* .debug_str_offsets */ \ | |
822 | + 1 /* .debug_macro or .debug_macinfo */) | |
823 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
824 | const gdb_byte *offsets; | |
825 | const gdb_byte *sizes; | |
826 | } v2; | |
827 | } section_pool; | |
80626a55 DE |
828 | }; |
829 | ||
830 | /* Data for one DWP file. */ | |
831 | ||
832 | struct dwp_file | |
833 | { | |
400174b1 TT |
834 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
835 | : name (name_), | |
836 | dbfd (std::move (abfd)) | |
837 | { | |
838 | } | |
839 | ||
80626a55 DE |
840 | /* Name of the file. */ |
841 | const char *name; | |
842 | ||
73869dc2 | 843 | /* File format version. */ |
400174b1 | 844 | int version = 0; |
73869dc2 | 845 | |
93417882 | 846 | /* The bfd. */ |
400174b1 | 847 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
848 | |
849 | /* Section info for this file. */ | |
400174b1 | 850 | struct dwp_sections sections {}; |
80626a55 | 851 | |
57d63ce2 | 852 | /* Table of CUs in the file. */ |
400174b1 | 853 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
854 | |
855 | /* Table of TUs in the file. */ | |
400174b1 | 856 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 857 | |
19ac8c2e | 858 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
859 | htab_up loaded_cus; |
860 | htab_up loaded_tus; | |
80626a55 | 861 | |
73869dc2 DE |
862 | /* Table to map ELF section numbers to their sections. |
863 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
864 | unsigned int num_sections = 0; |
865 | asection **elf_sections = nullptr; | |
80626a55 DE |
866 | }; |
867 | ||
0963b4bd MS |
868 | /* Struct used to pass misc. parameters to read_die_and_children, et |
869 | al. which are used for both .debug_info and .debug_types dies. | |
870 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 871 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
872 | |
873 | struct die_reader_specs | |
874 | { | |
a32a8923 | 875 | /* The bfd of die_section. */ |
93311388 DE |
876 | bfd* abfd; |
877 | ||
878 | /* The CU of the DIE we are parsing. */ | |
879 | struct dwarf2_cu *cu; | |
880 | ||
80626a55 | 881 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
882 | struct dwo_file *dwo_file; |
883 | ||
dee91e82 | 884 | /* The section the die comes from. |
3019eac3 | 885 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
886 | struct dwarf2_section_info *die_section; |
887 | ||
888 | /* die_section->buffer. */ | |
d521ce57 | 889 | const gdb_byte *buffer; |
f664829e DE |
890 | |
891 | /* The end of the buffer. */ | |
892 | const gdb_byte *buffer_end; | |
a2ce51a0 | 893 | |
685af9cd TT |
894 | /* The abbreviation table to use when reading the DIEs. */ |
895 | struct abbrev_table *abbrev_table; | |
93311388 DE |
896 | }; |
897 | ||
c0ab21c2 TT |
898 | /* A subclass of die_reader_specs that holds storage and has complex |
899 | constructor and destructor behavior. */ | |
900 | ||
901 | class cutu_reader : public die_reader_specs | |
902 | { | |
903 | public: | |
904 | ||
ab432490 SM |
905 | cutu_reader (dwarf2_per_cu_data *this_cu, |
906 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 907 | struct abbrev_table *abbrev_table, |
2e671100 | 908 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
909 | bool skip_partial); |
910 | ||
911 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 912 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
913 | struct dwarf2_cu *parent_cu = nullptr, |
914 | struct dwo_file *dwo_file = nullptr); | |
915 | ||
c0ab21c2 TT |
916 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
917 | ||
918 | const gdb_byte *info_ptr = nullptr; | |
919 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
920 | bool dummy_p = false; |
921 | ||
6751ebae TT |
922 | /* Release the new CU, putting it on the chain. This cannot be done |
923 | for dummy CUs. */ | |
924 | void keep (); | |
925 | ||
c0ab21c2 | 926 | private: |
9e021579 SM |
927 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
928 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 929 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
930 | |
931 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
932 | std::unique_ptr<dwarf2_cu> m_new_cu; |
933 | ||
934 | /* The ordinary abbreviation table. */ | |
935 | abbrev_table_up m_abbrev_table_holder; | |
936 | ||
937 | /* The DWO abbreviation table. */ | |
938 | abbrev_table_up m_dwo_abbrev_table; | |
939 | }; | |
dee91e82 | 940 | |
c906108c | 941 | /* When we construct a partial symbol table entry we only |
0963b4bd | 942 | need this much information. */ |
6f06d47b | 943 | struct partial_die_info : public allocate_on_obstack |
c906108c | 944 | { |
6f06d47b YQ |
945 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
946 | ||
947 | /* Disable assign but still keep copy ctor, which is needed | |
948 | load_partial_dies. */ | |
949 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
950 | ||
52356b79 YQ |
951 | /* Adjust the partial die before generating a symbol for it. This |
952 | function may set the is_external flag or change the DIE's | |
953 | name. */ | |
954 | void fixup (struct dwarf2_cu *cu); | |
955 | ||
48fbe735 YQ |
956 | /* Read a minimal amount of information into the minimal die |
957 | structure. */ | |
958 | const gdb_byte *read (const struct die_reader_specs *reader, | |
959 | const struct abbrev_info &abbrev, | |
960 | const gdb_byte *info_ptr); | |
961 | ||
72bf9492 | 962 | /* Offset of this DIE. */ |
6f06d47b | 963 | const sect_offset sect_off; |
72bf9492 DJ |
964 | |
965 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 966 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 967 | |
72bf9492 | 968 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
969 | const unsigned int has_children : 1; |
970 | ||
72bf9492 DJ |
971 | unsigned int is_external : 1; |
972 | unsigned int is_declaration : 1; | |
973 | unsigned int has_type : 1; | |
974 | unsigned int has_specification : 1; | |
975 | unsigned int has_pc_info : 1; | |
481860b3 | 976 | unsigned int may_be_inlined : 1; |
72bf9492 | 977 | |
0c1b455e TT |
978 | /* This DIE has been marked DW_AT_main_subprogram. */ |
979 | unsigned int main_subprogram : 1; | |
980 | ||
72bf9492 DJ |
981 | /* Flag set if the SCOPE field of this structure has been |
982 | computed. */ | |
983 | unsigned int scope_set : 1; | |
984 | ||
fa4028e9 JB |
985 | /* Flag set if the DIE has a byte_size attribute. */ |
986 | unsigned int has_byte_size : 1; | |
987 | ||
ff908ebf AW |
988 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
989 | unsigned int has_const_value : 1; | |
990 | ||
98bfdba5 PA |
991 | /* Flag set if any of the DIE's children are template arguments. */ |
992 | unsigned int has_template_arguments : 1; | |
993 | ||
52356b79 | 994 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
995 | unsigned int fixup_called : 1; |
996 | ||
36586728 TT |
997 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
998 | unsigned int is_dwz : 1; | |
999 | ||
1000 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1001 | unsigned int spec_is_dwz : 1; | |
1002 | ||
72bf9492 | 1003 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1004 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1005 | const char *name = nullptr; |
72bf9492 | 1006 | |
abc72ce4 | 1007 | /* The linkage name, if present. */ |
6f06d47b | 1008 | const char *linkage_name = nullptr; |
abc72ce4 | 1009 | |
72bf9492 DJ |
1010 | /* The scope to prepend to our children. This is generally |
1011 | allocated on the comp_unit_obstack, so will disappear | |
1012 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1013 | const char *scope = nullptr; |
72bf9492 | 1014 | |
95554aad TT |
1015 | /* Some data associated with the partial DIE. The tag determines |
1016 | which field is live. */ | |
1017 | union | |
1018 | { | |
1019 | /* The location description associated with this DIE, if any. */ | |
1020 | struct dwarf_block *locdesc; | |
1021 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1022 | sect_offset sect_off; |
6f06d47b | 1023 | } d {}; |
72bf9492 DJ |
1024 | |
1025 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1026 | CORE_ADDR lowpc = 0; |
1027 | CORE_ADDR highpc = 0; | |
72bf9492 | 1028 | |
93311388 | 1029 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1030 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1031 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1032 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1033 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1034 | |
1035 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1036 | DW_AT_specification (or DW_AT_abstract_origin or | |
1037 | DW_AT_extension). */ | |
6f06d47b | 1038 | sect_offset spec_offset {}; |
72bf9492 DJ |
1039 | |
1040 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1041 | if any. */ | |
6f06d47b YQ |
1042 | struct partial_die_info *die_parent = nullptr; |
1043 | struct partial_die_info *die_child = nullptr; | |
1044 | struct partial_die_info *die_sibling = nullptr; | |
1045 | ||
1046 | friend struct partial_die_info * | |
1047 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1048 | ||
1049 | private: | |
1050 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1051 | partial_die_info (sect_offset sect_off) | |
1052 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1053 | { | |
1054 | } | |
1055 | ||
1056 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1057 | int has_children_) | |
1058 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1059 | { | |
1060 | is_external = 0; | |
1061 | is_declaration = 0; | |
1062 | has_type = 0; | |
1063 | has_specification = 0; | |
1064 | has_pc_info = 0; | |
1065 | may_be_inlined = 0; | |
1066 | main_subprogram = 0; | |
1067 | scope_set = 0; | |
1068 | has_byte_size = 0; | |
1069 | has_const_value = 0; | |
1070 | has_template_arguments = 0; | |
1071 | fixup_called = 0; | |
1072 | is_dwz = 0; | |
1073 | spec_is_dwz = 0; | |
1074 | } | |
c906108c SS |
1075 | }; |
1076 | ||
c906108c SS |
1077 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1078 | but this would require a corresponding change in unpack_field_as_long | |
1079 | and friends. */ | |
1080 | static int bits_per_byte = 8; | |
1081 | ||
9c6a1327 TT |
1082 | struct variant_part_builder; |
1083 | ||
1084 | /* When reading a variant, we track a bit more information about the | |
1085 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1086 | |
1087 | struct variant_field | |
1088 | { | |
9c6a1327 TT |
1089 | int first_field = -1; |
1090 | int last_field = -1; | |
1091 | ||
1092 | /* A variant can contain other variant parts. */ | |
1093 | std::vector<variant_part_builder> variant_parts; | |
1094 | ||
2ddeaf8a TT |
1095 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1096 | default branch. */ | |
9c6a1327 TT |
1097 | bool default_branch = false; |
1098 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1099 | value. */ | |
1100 | ULONGEST discriminant_value = 0; | |
1101 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1102 | data. */ | |
1103 | struct dwarf_block *discr_list_data = nullptr; | |
1104 | }; | |
1105 | ||
1106 | /* This represents a DW_TAG_variant_part. */ | |
1107 | ||
1108 | struct variant_part_builder | |
1109 | { | |
1110 | /* The offset of the discriminant field. */ | |
1111 | sect_offset discriminant_offset {}; | |
1112 | ||
1113 | /* Variants that are direct children of this variant part. */ | |
1114 | std::vector<variant_field> variants; | |
1115 | ||
1116 | /* True if we're currently reading a variant. */ | |
1117 | bool processing_variant = false; | |
2ddeaf8a TT |
1118 | }; |
1119 | ||
52059ffd TT |
1120 | struct nextfield |
1121 | { | |
be2daae6 TT |
1122 | int accessibility = 0; |
1123 | int virtuality = 0; | |
9c6a1327 TT |
1124 | /* Variant parts need to find the discriminant, which is a DIE |
1125 | reference. We track the section offset of each field to make | |
1126 | this link. */ | |
1127 | sect_offset offset; | |
be2daae6 | 1128 | struct field field {}; |
52059ffd TT |
1129 | }; |
1130 | ||
1131 | struct fnfieldlist | |
1132 | { | |
be2daae6 TT |
1133 | const char *name = nullptr; |
1134 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1135 | }; |
1136 | ||
c906108c SS |
1137 | /* The routines that read and process dies for a C struct or C++ class |
1138 | pass lists of data member fields and lists of member function fields | |
1139 | in an instance of a field_info structure, as defined below. */ | |
1140 | struct field_info | |
c5aa993b | 1141 | { |
0963b4bd | 1142 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1143 | std::vector<struct nextfield> fields; |
1144 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1145 | |
85102364 | 1146 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1147 | int non_public_fields = 0; |
c906108c | 1148 | |
c5aa993b JM |
1149 | /* Member function fieldlist array, contains name of possibly overloaded |
1150 | member function, number of overloaded member functions and a pointer | |
1151 | to the head of the member function field chain. */ | |
be2daae6 | 1152 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1153 | |
1154 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1155 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1156 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1157 | |
1158 | /* Nested types defined by this class and the number of elements in this | |
1159 | list. */ | |
be2daae6 | 1160 | std::vector<struct decl_field> nested_types_list; |
317f7127 | 1161 | |
9c6a1327 TT |
1162 | /* If non-null, this is the variant part we are currently |
1163 | reading. */ | |
1164 | variant_part_builder *current_variant_part = nullptr; | |
1165 | /* This holds all the top-level variant parts attached to the type | |
1166 | we're reading. */ | |
1167 | std::vector<variant_part_builder> variant_parts; | |
1168 | ||
317f7127 TT |
1169 | /* Return the total number of fields (including baseclasses). */ |
1170 | int nfields () const | |
1171 | { | |
1172 | return fields.size () + baseclasses.size (); | |
1173 | } | |
c5aa993b | 1174 | }; |
c906108c | 1175 | |
ae038cb0 DJ |
1176 | /* Loaded secondary compilation units are kept in memory until they |
1177 | have not been referenced for the processing of this many | |
1178 | compilation units. Set this to zero to disable caching. Cache | |
1179 | sizes of up to at least twenty will improve startup time for | |
1180 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1181 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1182 | static void |
b4f54984 DE |
1183 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1184 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1185 | { |
3e43a32a | 1186 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1187 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1188 | value); |
1189 | } | |
4390d890 | 1190 | \f |
c906108c SS |
1191 | /* local function prototypes */ |
1192 | ||
918dd910 JK |
1193 | static void dwarf2_find_base_address (struct die_info *die, |
1194 | struct dwarf2_cu *cu); | |
1195 | ||
891813be | 1196 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1197 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1198 | const char *name); | |
0018ea6f | 1199 | |
f1902523 JK |
1200 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1201 | const gdb_byte *info_ptr, | |
3e225074 | 1202 | struct die_info *type_unit_die); |
f1902523 | 1203 | |
ed2dc618 SM |
1204 | static void dwarf2_build_psymtabs_hard |
1205 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1206 | |
72bf9492 DJ |
1207 | static void scan_partial_symbols (struct partial_die_info *, |
1208 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1209 | int, struct dwarf2_cu *); |
c906108c | 1210 | |
72bf9492 DJ |
1211 | static void add_partial_symbol (struct partial_die_info *, |
1212 | struct dwarf2_cu *); | |
63d06c5c | 1213 | |
72bf9492 DJ |
1214 | static void add_partial_namespace (struct partial_die_info *pdi, |
1215 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1216 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1217 | |
5d7cb8df | 1218 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1219 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1220 | struct dwarf2_cu *cu); |
1221 | ||
72bf9492 DJ |
1222 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1223 | struct dwarf2_cu *cu); | |
91c24f0a | 1224 | |
bc30ff58 JB |
1225 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1226 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1227 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1228 | |
d521ce57 | 1229 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1230 | |
dee91e82 | 1231 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1232 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1233 | |
fb816e8b TV |
1234 | /* A pair of partial_die_info and compilation unit. */ |
1235 | struct cu_partial_die_info | |
1236 | { | |
1237 | /* The compilation unit of the partial_die_info. */ | |
1238 | struct dwarf2_cu *cu; | |
1239 | /* A partial_die_info. */ | |
1240 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1241 | |
1242 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1243 | : cu (cu), | |
1244 | pdi (pdi) | |
405feb71 | 1245 | { /* Nothing. */ } |
122cf0f2 AB |
1246 | |
1247 | private: | |
1248 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1249 | }; |
1250 | ||
122cf0f2 AB |
1251 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1252 | struct dwarf2_cu *); | |
72bf9492 | 1253 | |
d521ce57 TT |
1254 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1255 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1256 | const gdb_byte *, bool *need_reprocess); |
1257 | ||
1258 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1259 | struct attribute *attr); | |
1260 | ||
1261 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1262 | |
ed2dc618 SM |
1263 | static sect_offset read_abbrev_offset |
1264 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1265 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1266 | |
ed2dc618 SM |
1267 | static const char *read_indirect_string |
1268 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1269 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1270 | |
ed2dc618 | 1271 | static const char *read_indirect_string_at_offset |
4f44ae6c | 1272 | (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset); |
927aa2e7 | 1273 | |
d521ce57 TT |
1274 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1275 | const gdb_byte *, | |
3019eac3 DE |
1276 | unsigned int *); |
1277 | ||
18a8505e AT |
1278 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1279 | ULONGEST str_index); | |
1280 | ||
1281 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1282 | ULONGEST str_index); | |
3019eac3 | 1283 | |
e142c38c | 1284 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1285 | |
e142c38c DJ |
1286 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1287 | struct dwarf2_cu *); | |
c906108c | 1288 | |
7d45c7c3 KB |
1289 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1290 | struct dwarf2_cu *cu); | |
1291 | ||
a084a2a6 AT |
1292 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1293 | ||
05cf31d1 JB |
1294 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1295 | struct dwarf2_cu *cu); | |
1296 | ||
e142c38c | 1297 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1298 | |
e142c38c | 1299 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1300 | struct dwarf2_cu **); |
63d06c5c | 1301 | |
9c541725 | 1302 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1303 | struct dwarf2_cu *cu); |
debd256d | 1304 | |
f3f5162e | 1305 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1306 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1307 | CORE_ADDR, int decode_mapping); |
c906108c | 1308 | |
804d2729 TT |
1309 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1310 | const char *); | |
c906108c | 1311 | |
a14ed312 | 1312 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1313 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1314 | |
ff39bb5e | 1315 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1316 | struct dwarf2_cu *); |
c906108c | 1317 | |
ff39bb5e | 1318 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1319 | struct type *type, |
1320 | const char *name, | |
1321 | struct obstack *obstack, | |
12df843f | 1322 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1323 | const gdb_byte **bytes, |
98bfdba5 | 1324 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1325 | |
e7c27a73 | 1326 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1327 | |
b4ba55a1 JB |
1328 | static int need_gnat_info (struct dwarf2_cu *); |
1329 | ||
3e43a32a MS |
1330 | static struct type *die_descriptive_type (struct die_info *, |
1331 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1332 | |
1333 | static void set_descriptive_type (struct type *, struct die_info *, | |
1334 | struct dwarf2_cu *); | |
1335 | ||
e7c27a73 DJ |
1336 | static struct type *die_containing_type (struct die_info *, |
1337 | struct dwarf2_cu *); | |
c906108c | 1338 | |
ff39bb5e | 1339 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1340 | struct dwarf2_cu *); |
c906108c | 1341 | |
f792889a | 1342 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1343 | |
673bfd45 DE |
1344 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1345 | ||
0d5cff50 | 1346 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1347 | |
6e70227d | 1348 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1349 | const char *suffix, int physname, |
1350 | struct dwarf2_cu *cu); | |
63d06c5c | 1351 | |
e7c27a73 | 1352 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1353 | |
348e048f DE |
1354 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1355 | ||
e7c27a73 | 1356 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1357 | |
e7c27a73 | 1358 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1359 | |
96408a79 SA |
1360 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1361 | ||
71a3c369 TT |
1362 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1363 | ||
ff013f42 | 1364 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1365 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1366 | |
41144253 | 1367 | /* Return the .debug_loclists section to use for cu. */ |
1368 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1369 | ||
3a2b436a | 1370 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1371 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1372 | enum pc_bounds_kind |
1373 | { | |
e385593e | 1374 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1375 | PC_BOUNDS_NOT_PRESENT, |
1376 | ||
e385593e JK |
1377 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1378 | were present but they do not form a valid range of PC addresses. */ | |
1379 | PC_BOUNDS_INVALID, | |
1380 | ||
3a2b436a JK |
1381 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1382 | PC_BOUNDS_RANGES, | |
1383 | ||
1384 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1385 | PC_BOUNDS_HIGH_LOW, | |
1386 | }; | |
1387 | ||
1388 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1389 | CORE_ADDR *, CORE_ADDR *, | |
1390 | struct dwarf2_cu *, | |
891813be | 1391 | dwarf2_psymtab *); |
c906108c | 1392 | |
fae299cd DC |
1393 | static void get_scope_pc_bounds (struct die_info *, |
1394 | CORE_ADDR *, CORE_ADDR *, | |
1395 | struct dwarf2_cu *); | |
1396 | ||
801e3a5b JB |
1397 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1398 | CORE_ADDR, struct dwarf2_cu *); | |
1399 | ||
a14ed312 | 1400 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1401 | struct dwarf2_cu *); |
c906108c | 1402 | |
a14ed312 | 1403 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1404 | struct type *, struct dwarf2_cu *); |
c906108c | 1405 | |
a14ed312 | 1406 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1407 | struct die_info *, struct type *, |
e7c27a73 | 1408 | struct dwarf2_cu *); |
c906108c | 1409 | |
a14ed312 | 1410 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1411 | struct type *, |
1412 | struct dwarf2_cu *); | |
c906108c | 1413 | |
134d01f1 | 1414 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1415 | |
e7c27a73 | 1416 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1417 | |
e7c27a73 | 1418 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1419 | |
5d7cb8df JK |
1420 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1421 | ||
804d2729 | 1422 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1423 | |
27aa8d6a SW |
1424 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1425 | ||
74921315 KS |
1426 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1427 | ||
f55ee35c JK |
1428 | static struct type *read_module_type (struct die_info *die, |
1429 | struct dwarf2_cu *cu); | |
1430 | ||
38d518c9 | 1431 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1432 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1433 | |
134d01f1 | 1434 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1435 | |
7d79de9a TT |
1436 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1437 | bool * = nullptr); | |
c906108c | 1438 | |
6e70227d | 1439 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1440 | struct dwarf2_cu *); |
1441 | ||
bf6af496 | 1442 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1443 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1444 | struct die_info *); |
639d11d3 | 1445 | |
dee91e82 | 1446 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1447 | const gdb_byte *info_ptr, |
1448 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1449 | struct die_info *parent); |
1450 | ||
d521ce57 TT |
1451 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1452 | struct die_info **, const gdb_byte *, | |
3e225074 | 1453 | int); |
3019eac3 | 1454 | |
d521ce57 | 1455 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1456 | struct die_info **, const gdb_byte *); |
93311388 | 1457 | |
e7c27a73 | 1458 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1459 | |
15d034d0 | 1460 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1461 | struct objfile *); |
71c25dea | 1462 | |
15d034d0 | 1463 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1464 | |
15d034d0 | 1465 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1466 | struct die_info *die, |
1467 | struct dwarf2_cu *cu); | |
1468 | ||
ca69b9e6 DE |
1469 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1470 | struct dwarf2_cu *cu); | |
1471 | ||
e142c38c | 1472 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1473 | struct dwarf2_cu **); |
9219021c | 1474 | |
d97bc12b DE |
1475 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1476 | ||
1477 | static void dump_die_for_error (struct die_info *); | |
1478 | ||
1479 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1480 | struct die_info *); | |
c906108c | 1481 | |
d97bc12b | 1482 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1483 | |
51545339 | 1484 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1485 | struct dwarf2_cu *); |
c906108c | 1486 | |
348e048f | 1487 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1488 | const struct attribute *, |
348e048f DE |
1489 | struct dwarf2_cu **); |
1490 | ||
10b3939b | 1491 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1492 | const struct attribute *, |
f2f0e013 | 1493 | struct dwarf2_cu **); |
c906108c | 1494 | |
348e048f | 1495 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1496 | const struct attribute *, |
348e048f DE |
1497 | struct dwarf2_cu **); |
1498 | ||
ac9ec31b DE |
1499 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1500 | struct dwarf2_cu *); | |
1501 | ||
1502 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1503 | const struct attribute *, |
ac9ec31b DE |
1504 | struct dwarf2_cu *); |
1505 | ||
ab432490 SM |
1506 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1507 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1508 | |
ab432490 SM |
1509 | static void read_signatured_type (signatured_type *sig_type, |
1510 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1511 | |
63e43d3a PMR |
1512 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1513 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1514 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1515 | |
c906108c SS |
1516 | /* memory allocation interface */ |
1517 | ||
7b5a2f43 | 1518 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1519 | |
b60c80d6 | 1520 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1521 | |
43f3e411 | 1522 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1523 | |
8cf6f0b1 TT |
1524 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1525 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1526 | const struct attribute *attr); |
8cf6f0b1 | 1527 | |
ff39bb5e | 1528 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1529 | struct symbol *sym, |
f1e6e072 TT |
1530 | struct dwarf2_cu *cu, |
1531 | int is_block); | |
4c2df51b | 1532 | |
d521ce57 TT |
1533 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1534 | const gdb_byte *info_ptr, | |
1535 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1536 | |
72bf9492 DJ |
1537 | static hashval_t partial_die_hash (const void *item); |
1538 | ||
1539 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1540 | ||
ae038cb0 | 1541 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1542 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1543 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1544 | |
9816fde3 | 1545 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1546 | struct die_info *comp_unit_die, |
1547 | enum language pretend_language); | |
93311388 | 1548 | |
f792889a DJ |
1549 | static struct type *set_die_type (struct die_info *, struct type *, |
1550 | struct dwarf2_cu *); | |
1c379e20 | 1551 | |
ed2dc618 | 1552 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1553 | |
ed2dc618 | 1554 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1555 | |
ab432490 SM |
1556 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1557 | dwarf2_per_objfile *per_objfile, | |
1558 | bool skip_partial, | |
1559 | enum language pretend_language); | |
10b3939b | 1560 | |
8fc0b21d | 1561 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1562 | enum language pretend_language); |
10b3939b | 1563 | |
8fc0b21d | 1564 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1565 | enum language pretend_language); |
f4dc4d17 | 1566 | |
10b3939b DJ |
1567 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1568 | struct dwarf2_per_cu_data *); | |
1569 | ||
ae038cb0 DJ |
1570 | static void dwarf2_mark (struct dwarf2_cu *); |
1571 | ||
b64f50a1 | 1572 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1573 | dwarf2_per_cu_data *per_cu, |
1574 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1575 | |
f792889a | 1576 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1577 | |
120ce1b5 SM |
1578 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1579 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1580 | enum language pretend_language); |
1581 | ||
ed2dc618 | 1582 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1583 | |
b303c6f6 AB |
1584 | /* Class, the destructor of which frees all allocated queue entries. This |
1585 | will only have work to do if an error was thrown while processing the | |
1586 | dwarf. If no error was thrown then the queue entries should have all | |
1587 | been processed, and freed, as we went along. */ | |
1588 | ||
1589 | class dwarf2_queue_guard | |
1590 | { | |
1591 | public: | |
39856def TT |
1592 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1593 | : m_per_objfile (per_objfile) | |
1594 | { | |
1595 | } | |
b303c6f6 AB |
1596 | |
1597 | /* Free any entries remaining on the queue. There should only be | |
1598 | entries left if we hit an error while processing the dwarf. */ | |
1599 | ~dwarf2_queue_guard () | |
1600 | { | |
39856def TT |
1601 | /* Ensure that no memory is allocated by the queue. */ |
1602 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1603 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1604 | } |
b303c6f6 | 1605 | |
39856def | 1606 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1607 | |
39856def TT |
1608 | private: |
1609 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1610 | }; |
1611 | ||
39856def TT |
1612 | dwarf2_queue_item::~dwarf2_queue_item () |
1613 | { | |
1614 | /* Anything still marked queued is likely to be in an | |
1615 | inconsistent state, so discard it. */ | |
1616 | if (per_cu->queued) | |
1617 | { | |
7188ed02 | 1618 | per_objfile->remove_cu (per_cu); |
39856def TT |
1619 | per_cu->queued = 0; |
1620 | } | |
1621 | } | |
1622 | ||
d721ba37 PA |
1623 | /* The return type of find_file_and_directory. Note, the enclosed |
1624 | string pointers are only valid while this object is valid. */ | |
1625 | ||
1626 | struct file_and_directory | |
1627 | { | |
1628 | /* The filename. This is never NULL. */ | |
1629 | const char *name; | |
1630 | ||
1631 | /* The compilation directory. NULL if not known. If we needed to | |
1632 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1633 | points directly to the DW_AT_comp_dir string attribute owned by | |
1634 | the obstack that owns the DIE. */ | |
1635 | const char *comp_dir; | |
1636 | ||
1637 | /* If we needed to build a new string for comp_dir, this is what | |
1638 | owns the storage. */ | |
1639 | std::string comp_dir_storage; | |
1640 | }; | |
1641 | ||
1642 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1643 | struct dwarf2_cu *cu); | |
9291a0cd | 1644 | |
298e9637 | 1645 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1646 | |
298e9637 | 1647 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1648 | |
57d63ce2 | 1649 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1650 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1651 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1652 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1653 | |
ed2dc618 SM |
1654 | static struct dwp_file *get_dwp_file |
1655 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1656 | |
3019eac3 | 1657 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1658 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1659 | ULONGEST signature); | |
3019eac3 DE |
1660 | |
1661 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1662 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1663 | |
1b555f17 | 1664 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1665 | |
263db9a1 TT |
1666 | /* A unique pointer to a dwo_file. */ |
1667 | ||
51ac9db5 | 1668 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1669 | |
ed2dc618 | 1670 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1671 | |
1b80a9fa | 1672 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1673 | |
1674 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1675 | \f |
1676 | /* Various complaints about symbol reading that don't abort the process. */ | |
1677 | ||
4390d890 DE |
1678 | static void |
1679 | dwarf2_debug_line_missing_file_complaint (void) | |
1680 | { | |
b98664d3 | 1681 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1682 | } |
1683 | ||
1684 | static void | |
1685 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1686 | { | |
b98664d3 | 1687 | complaint (_(".debug_line section has line " |
4390d890 DE |
1688 | "program sequence without an end")); |
1689 | } | |
1690 | ||
1691 | static void | |
1692 | dwarf2_complex_location_expr_complaint (void) | |
1693 | { | |
b98664d3 | 1694 | complaint (_("location expression too complex")); |
4390d890 DE |
1695 | } |
1696 | ||
1697 | static void | |
1698 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1699 | int arg3) | |
1700 | { | |
b98664d3 | 1701 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1702 | arg1, arg2, arg3); |
1703 | } | |
1704 | ||
4390d890 DE |
1705 | static void |
1706 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1707 | { | |
b98664d3 | 1708 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1709 | arg1, arg2); |
1710 | } | |
527f3840 JK |
1711 | |
1712 | /* Hash function for line_header_hash. */ | |
1713 | ||
1714 | static hashval_t | |
1715 | line_header_hash (const struct line_header *ofs) | |
1716 | { | |
9c541725 | 1717 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1718 | } |
1719 | ||
1720 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1721 | ||
1722 | static hashval_t | |
1723 | line_header_hash_voidp (const void *item) | |
1724 | { | |
9a3c8263 | 1725 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1726 | |
1727 | return line_header_hash (ofs); | |
1728 | } | |
1729 | ||
1730 | /* Equality function for line_header_hash. */ | |
1731 | ||
1732 | static int | |
1733 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1734 | { | |
9a3c8263 SM |
1735 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1736 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1737 | |
9c541725 | 1738 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1739 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1740 | } | |
1741 | ||
4390d890 | 1742 | \f |
9291a0cd | 1743 | |
330cdd98 PA |
1744 | /* See declaration. */ |
1745 | ||
5989a64e SM |
1746 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1747 | bool can_copy_) | |
c3699833 SM |
1748 | : obfd (obfd), |
1749 | can_copy (can_copy_) | |
330cdd98 PA |
1750 | { |
1751 | if (names == NULL) | |
1752 | names = &dwarf2_elf_names; | |
1753 | ||
330cdd98 PA |
1754 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1755 | locate_sections (obfd, sec, *names); | |
1756 | } | |
1757 | ||
5989a64e | 1758 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1759 | { |
b76e467d | 1760 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1761 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1762 | |
b2bdb8cf | 1763 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1764 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1765 | |
5989a64e | 1766 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1767 | } |
1768 | ||
7188ed02 | 1769 | /* See read.h. */ |
330cdd98 PA |
1770 | |
1771 | void | |
7188ed02 | 1772 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1773 | { |
7188ed02 SM |
1774 | for (auto pair : m_dwarf2_cus) |
1775 | delete pair.second; | |
330cdd98 | 1776 | |
7188ed02 | 1777 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1778 | } |
1779 | ||
11ed8cad TT |
1780 | /* A helper class that calls free_cached_comp_units on |
1781 | destruction. */ | |
1782 | ||
1783 | class free_cached_comp_units | |
1784 | { | |
1785 | public: | |
1786 | ||
1787 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1788 | : m_per_objfile (per_objfile) | |
1789 | { | |
1790 | } | |
1791 | ||
1792 | ~free_cached_comp_units () | |
1793 | { | |
7188ed02 | 1794 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1795 | } |
1796 | ||
1797 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1798 | ||
1799 | private: | |
1800 | ||
1801 | dwarf2_per_objfile *m_per_objfile; | |
1802 | }; | |
1803 | ||
af758d11 SM |
1804 | /* See read.h. */ |
1805 | ||
1806 | bool | |
1807 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1808 | { | |
1809 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1810 | ||
1811 | return this->m_symtabs[per_cu->index] != nullptr; | |
1812 | } | |
1813 | ||
1814 | /* See read.h. */ | |
1815 | ||
1816 | compunit_symtab * | |
1817 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1818 | { | |
1819 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1820 | ||
1821 | return this->m_symtabs[per_cu->index]; | |
1822 | } | |
1823 | ||
1824 | /* See read.h. */ | |
1825 | ||
1826 | void | |
1827 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1828 | compunit_symtab *symtab) | |
1829 | { | |
1830 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1831 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1832 | ||
1833 | this->m_symtabs[per_cu->index] = symtab; | |
1834 | } | |
1835 | ||
c906108c | 1836 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1837 | information and return true if we have enough to do something. |
1838 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1839 | ELF names are used. CAN_COPY is true for formats where symbol |
1840 | interposition is possible and so symbol values must follow copy | |
1841 | relocation rules. */ | |
c906108c SS |
1842 | |
1843 | int | |
251d32d9 | 1844 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1845 | const struct dwarf2_debug_sections *names, |
1846 | bool can_copy) | |
c906108c | 1847 | { |
97cbe998 SDJ |
1848 | if (objfile->flags & OBJF_READNEVER) |
1849 | return 0; | |
1850 | ||
ed2dc618 SM |
1851 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1852 | = get_dwarf2_per_objfile (objfile); | |
1853 | ||
1854 | if (dwarf2_per_objfile == NULL) | |
5989a64e SM |
1855 | { |
1856 | /* For now, each dwarf2_per_objfile owns its own dwarf2_per_bfd (no | |
1857 | sharing yet). */ | |
1858 | dwarf2_per_bfd *per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1859 | ||
1860 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); | |
1861 | } | |
5bfd760d | 1862 | |
5989a64e SM |
1863 | return (!dwarf2_per_objfile->per_bfd->info.is_virtual |
1864 | && dwarf2_per_objfile->per_bfd->info.s.section != NULL | |
1865 | && !dwarf2_per_objfile->per_bfd->abbrev.is_virtual | |
1866 | && dwarf2_per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1867 | } |
1868 | ||
251d32d9 TG |
1869 | /* When loading sections, we look either for uncompressed section or for |
1870 | compressed section names. */ | |
233a11ab CS |
1871 | |
1872 | static int | |
251d32d9 TG |
1873 | section_is_p (const char *section_name, |
1874 | const struct dwarf2_section_names *names) | |
233a11ab | 1875 | { |
251d32d9 TG |
1876 | if (names->normal != NULL |
1877 | && strcmp (section_name, names->normal) == 0) | |
1878 | return 1; | |
1879 | if (names->compressed != NULL | |
1880 | && strcmp (section_name, names->compressed) == 0) | |
1881 | return 1; | |
1882 | return 0; | |
233a11ab CS |
1883 | } |
1884 | ||
330cdd98 | 1885 | /* See declaration. */ |
c906108c | 1886 | |
330cdd98 | 1887 | void |
5989a64e SM |
1888 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1889 | const dwarf2_debug_sections &names) | |
c906108c | 1890 | { |
fd361982 | 1891 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1892 | |
dc7650b8 JK |
1893 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1894 | { | |
1895 | } | |
950b7495 KS |
1896 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1897 | > bfd_get_file_size (abfd)) | |
1898 | { | |
1899 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1900 | warning (_("Discarding section %s which has a section size (%s" | |
1901 | ") larger than the file size [in module %s]"), | |
1902 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1903 | bfd_get_filename (abfd)); | |
1904 | } | |
330cdd98 | 1905 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1906 | { |
330cdd98 | 1907 | this->info.s.section = sectp; |
fd361982 | 1908 | this->info.size = bfd_section_size (sectp); |
c906108c | 1909 | } |
330cdd98 | 1910 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1911 | { |
330cdd98 | 1912 | this->abbrev.s.section = sectp; |
fd361982 | 1913 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1914 | } |
330cdd98 | 1915 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1916 | { |
330cdd98 | 1917 | this->line.s.section = sectp; |
fd361982 | 1918 | this->line.size = bfd_section_size (sectp); |
c906108c | 1919 | } |
330cdd98 | 1920 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1921 | { |
330cdd98 | 1922 | this->loc.s.section = sectp; |
fd361982 | 1923 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1924 | } |
330cdd98 | 1925 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1926 | { |
330cdd98 | 1927 | this->loclists.s.section = sectp; |
fd361982 | 1928 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1929 | } |
330cdd98 | 1930 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1931 | { |
330cdd98 | 1932 | this->macinfo.s.section = sectp; |
fd361982 | 1933 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1934 | } |
330cdd98 | 1935 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1936 | { |
330cdd98 | 1937 | this->macro.s.section = sectp; |
fd361982 | 1938 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1939 | } |
330cdd98 | 1940 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1941 | { |
330cdd98 | 1942 | this->str.s.section = sectp; |
fd361982 | 1943 | this->str.size = bfd_section_size (sectp); |
c906108c | 1944 | } |
18a8505e AT |
1945 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1946 | { | |
1947 | this->str_offsets.s.section = sectp; | |
1948 | this->str_offsets.size = bfd_section_size (sectp); | |
1949 | } | |
330cdd98 | 1950 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1951 | { |
330cdd98 | 1952 | this->line_str.s.section = sectp; |
fd361982 | 1953 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1954 | } |
330cdd98 | 1955 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1956 | { |
330cdd98 | 1957 | this->addr.s.section = sectp; |
fd361982 | 1958 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1959 | } |
330cdd98 | 1960 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1961 | { |
330cdd98 | 1962 | this->frame.s.section = sectp; |
fd361982 | 1963 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1964 | } |
330cdd98 | 1965 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1966 | { |
330cdd98 | 1967 | this->eh_frame.s.section = sectp; |
fd361982 | 1968 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1969 | } |
330cdd98 | 1970 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1971 | { |
330cdd98 | 1972 | this->ranges.s.section = sectp; |
fd361982 | 1973 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 1974 | } |
330cdd98 | 1975 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 1976 | { |
330cdd98 | 1977 | this->rnglists.s.section = sectp; |
fd361982 | 1978 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 1979 | } |
330cdd98 | 1980 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 1981 | { |
8b70b953 TT |
1982 | struct dwarf2_section_info type_section; |
1983 | ||
1984 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 1985 | type_section.s.section = sectp; |
fd361982 | 1986 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 1987 | |
fd5866f6 | 1988 | this->types.push_back (type_section); |
348e048f | 1989 | } |
330cdd98 | 1990 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 1991 | { |
330cdd98 | 1992 | this->gdb_index.s.section = sectp; |
fd361982 | 1993 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 1994 | } |
927aa2e7 JK |
1995 | else if (section_is_p (sectp->name, &names.debug_names)) |
1996 | { | |
1997 | this->debug_names.s.section = sectp; | |
fd361982 | 1998 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
1999 | } |
2000 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2001 | { | |
2002 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2003 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2004 | } |
dce234bc | 2005 | |
fd361982 AM |
2006 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2007 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2008 | this->has_section_at_zero = true; |
c906108c SS |
2009 | } |
2010 | ||
dce234bc | 2011 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2012 | SECTION_NAME. */ |
af34e669 | 2013 | |
dce234bc | 2014 | void |
3017a003 TG |
2015 | dwarf2_get_section_info (struct objfile *objfile, |
2016 | enum dwarf2_section_enum sect, | |
d521ce57 | 2017 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2018 | bfd_size_type *sizep) |
2019 | { | |
5bfd760d | 2020 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2021 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2022 | |
2023 | /* We may see an objfile without any DWARF, in which case we just | |
2024 | return nothing. */ | |
2025 | if (data == NULL) | |
2026 | { | |
2027 | *sectp = NULL; | |
2028 | *bufp = NULL; | |
2029 | *sizep = 0; | |
2030 | return; | |
2031 | } | |
3017a003 TG |
2032 | switch (sect) |
2033 | { | |
2034 | case DWARF2_DEBUG_FRAME: | |
5989a64e | 2035 | info = &data->per_bfd->frame; |
3017a003 TG |
2036 | break; |
2037 | case DWARF2_EH_FRAME: | |
5989a64e | 2038 | info = &data->per_bfd->eh_frame; |
3017a003 TG |
2039 | break; |
2040 | default: | |
2041 | gdb_assert_not_reached ("unexpected section"); | |
2042 | } | |
dce234bc | 2043 | |
96b79293 | 2044 | info->read (objfile); |
dce234bc | 2045 | |
96b79293 | 2046 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2047 | *bufp = info->buffer; |
2048 | *sizep = info->size; | |
2049 | } | |
2050 | ||
36586728 TT |
2051 | /* A helper function to find the sections for a .dwz file. */ |
2052 | ||
2053 | static void | |
2054 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2055 | { | |
9a3c8263 | 2056 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2057 | |
2058 | /* Note that we only support the standard ELF names, because .dwz | |
2059 | is ELF-only (at the time of writing). */ | |
2060 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2061 | { | |
049412e3 | 2062 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2063 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2064 | } |
2065 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2066 | { | |
049412e3 | 2067 | dwz_file->info.s.section = sectp; |
fd361982 | 2068 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2069 | } |
2070 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2071 | { | |
049412e3 | 2072 | dwz_file->str.s.section = sectp; |
fd361982 | 2073 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2074 | } |
2075 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2076 | { | |
049412e3 | 2077 | dwz_file->line.s.section = sectp; |
fd361982 | 2078 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2079 | } |
2080 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2081 | { | |
049412e3 | 2082 | dwz_file->macro.s.section = sectp; |
fd361982 | 2083 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2084 | } |
2ec9a5e0 TT |
2085 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2086 | { | |
049412e3 | 2087 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2088 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2089 | } |
927aa2e7 JK |
2090 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2091 | { | |
2092 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2093 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2094 | } |
36586728 TT |
2095 | } |
2096 | ||
c4973306 | 2097 | /* See dwarf2read.h. */ |
36586728 | 2098 | |
c4973306 | 2099 | struct dwz_file * |
c3699833 | 2100 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2101 | { |
36586728 | 2102 | const char *filename; |
acd13123 | 2103 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2104 | size_t buildid_len; |
2105 | bfd_byte *buildid; | |
36586728 | 2106 | |
c3699833 SM |
2107 | if (per_bfd->dwz_file != NULL) |
2108 | return per_bfd->dwz_file.get (); | |
36586728 | 2109 | |
4db1a1dc | 2110 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2111 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2112 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2113 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2114 | if (data == NULL) |
2115 | { | |
2116 | if (bfd_get_error () == bfd_error_no_error) | |
2117 | return NULL; | |
2118 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2119 | bfd_errmsg (bfd_get_error ())); | |
2120 | } | |
791afaa2 TT |
2121 | |
2122 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2123 | |
acd13123 TT |
2124 | buildid_len = (size_t) buildid_len_arg; |
2125 | ||
791afaa2 | 2126 | filename = data.get (); |
d721ba37 PA |
2127 | |
2128 | std::string abs_storage; | |
36586728 TT |
2129 | if (!IS_ABSOLUTE_PATH (filename)) |
2130 | { | |
14278e1f | 2131 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2132 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2133 | |
14278e1f | 2134 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2135 | filename = abs_storage.c_str (); |
36586728 TT |
2136 | } |
2137 | ||
dc294be5 TT |
2138 | /* First try the file name given in the section. If that doesn't |
2139 | work, try to use the build-id instead. */ | |
ad80db5b | 2140 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2141 | if (dwz_bfd != NULL) |
36586728 | 2142 | { |
192b62ce | 2143 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2144 | dwz_bfd.reset (nullptr); |
36586728 TT |
2145 | } |
2146 | ||
dc294be5 TT |
2147 | if (dwz_bfd == NULL) |
2148 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2149 | ||
0d79cdc4 AM |
2150 | if (dwz_bfd == nullptr) |
2151 | { | |
2152 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2153 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2154 | |
2155 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2156 | buildid_len, | |
2157 | origname, | |
2158 | &alt_filename)); | |
2159 | ||
2160 | if (fd.get () >= 0) | |
2161 | { | |
2162 | /* File successfully retrieved from server. */ | |
ad80db5b | 2163 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2164 | |
2165 | if (dwz_bfd == nullptr) | |
2166 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2167 | alt_filename.get ()); | |
2168 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2169 | dwz_bfd.reset (nullptr); | |
2170 | } | |
2171 | } | |
2172 | ||
dc294be5 TT |
2173 | if (dwz_bfd == NULL) |
2174 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2175 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2176 | |
7ff8cb8c TT |
2177 | std::unique_ptr<struct dwz_file> result |
2178 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2179 | |
7ff8cb8c TT |
2180 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2181 | result.get ()); | |
36586728 | 2182 | |
c3699833 SM |
2183 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2184 | per_bfd->dwz_file = std::move (result); | |
2185 | return per_bfd->dwz_file.get (); | |
36586728 | 2186 | } |
9291a0cd | 2187 | \f |
7b9f3c50 DE |
2188 | /* DWARF quick_symbols_functions support. */ |
2189 | ||
2190 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2191 | unique line tables, so we maintain a separate table of all .debug_line | |
2192 | derived entries to support the sharing. | |
2193 | All the quick functions need is the list of file names. We discard the | |
2194 | line_header when we're done and don't need to record it here. */ | |
2195 | struct quick_file_names | |
2196 | { | |
094b34ac DE |
2197 | /* The data used to construct the hash key. */ |
2198 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2199 | |
2200 | /* The number of entries in file_names, real_names. */ | |
2201 | unsigned int num_file_names; | |
2202 | ||
2203 | /* The file names from the line table, after being run through | |
2204 | file_full_name. */ | |
2205 | const char **file_names; | |
2206 | ||
2207 | /* The file names from the line table after being run through | |
2208 | gdb_realpath. These are computed lazily. */ | |
2209 | const char **real_names; | |
2210 | }; | |
2211 | ||
2212 | /* When using the index (and thus not using psymtabs), each CU has an | |
2213 | object of this type. This is used to hold information needed by | |
2214 | the various "quick" methods. */ | |
2215 | struct dwarf2_per_cu_quick_data | |
2216 | { | |
2217 | /* The file table. This can be NULL if there was no file table | |
2218 | or it's currently not read in. | |
5989a64e | 2219 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2220 | struct quick_file_names *file_names; |
2221 | ||
7b9f3c50 DE |
2222 | /* A temporary mark bit used when iterating over all CUs in |
2223 | expand_symtabs_matching. */ | |
2224 | unsigned int mark : 1; | |
2225 | ||
2226 | /* True if we've tried to read the file table and found there isn't one. | |
2227 | There will be no point in trying to read it again next time. */ | |
2228 | unsigned int no_file_data : 1; | |
2229 | }; | |
2230 | ||
094b34ac DE |
2231 | /* Utility hash function for a stmt_list_hash. */ |
2232 | ||
2233 | static hashval_t | |
2234 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2235 | { | |
2236 | hashval_t v = 0; | |
2237 | ||
2238 | if (stmt_list_hash->dwo_unit != NULL) | |
2239 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2240 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2241 | return v; |
2242 | } | |
2243 | ||
2244 | /* Utility equality function for a stmt_list_hash. */ | |
2245 | ||
2246 | static int | |
2247 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2248 | const struct stmt_list_hash *rhs) | |
2249 | { | |
2250 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2251 | return 0; | |
2252 | if (lhs->dwo_unit != NULL | |
2253 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2254 | return 0; | |
2255 | ||
9c541725 | 2256 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2257 | } |
2258 | ||
7b9f3c50 DE |
2259 | /* Hash function for a quick_file_names. */ |
2260 | ||
2261 | static hashval_t | |
2262 | hash_file_name_entry (const void *e) | |
2263 | { | |
9a3c8263 SM |
2264 | const struct quick_file_names *file_data |
2265 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2266 | |
094b34ac | 2267 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2268 | } |
2269 | ||
2270 | /* Equality function for a quick_file_names. */ | |
2271 | ||
2272 | static int | |
2273 | eq_file_name_entry (const void *a, const void *b) | |
2274 | { | |
9a3c8263 SM |
2275 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2276 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2277 | |
094b34ac | 2278 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2279 | } |
2280 | ||
2281 | /* Delete function for a quick_file_names. */ | |
2282 | ||
2283 | static void | |
2284 | delete_file_name_entry (void *e) | |
2285 | { | |
9a3c8263 | 2286 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2287 | int i; |
2288 | ||
2289 | for (i = 0; i < file_data->num_file_names; ++i) | |
2290 | { | |
2291 | xfree ((void*) file_data->file_names[i]); | |
2292 | if (file_data->real_names) | |
2293 | xfree ((void*) file_data->real_names[i]); | |
2294 | } | |
2295 | ||
45940949 TT |
2296 | /* The space for the struct itself lives on the obstack, so we don't |
2297 | free it here. */ | |
7b9f3c50 DE |
2298 | } |
2299 | ||
2300 | /* Create a quick_file_names hash table. */ | |
2301 | ||
5895093f | 2302 | static htab_up |
7b9f3c50 DE |
2303 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2304 | { | |
5895093f TT |
2305 | return htab_up (htab_create_alloc (nr_initial_entries, |
2306 | hash_file_name_entry, eq_file_name_entry, | |
2307 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2308 | } |
9291a0cd | 2309 | |
ab432490 SM |
2310 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2311 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2312 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2313 | |
1b555f17 | 2314 | static dwarf2_cu * |
ab432490 SM |
2315 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2316 | bool skip_partial) | |
918dd910 | 2317 | { |
3019eac3 | 2318 | if (per_cu->is_debug_types) |
ab432490 | 2319 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2320 | else |
ab432490 | 2321 | load_full_comp_unit (per_cu, per_objfile, skip_partial, language_minimal); |
918dd910 | 2322 | |
7188ed02 SM |
2323 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2324 | if (cu == nullptr) | |
1b555f17 | 2325 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2326 | |
7188ed02 | 2327 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2328 | |
7188ed02 | 2329 | return cu; |
918dd910 JK |
2330 | } |
2331 | ||
97a1449a | 2332 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2333 | |
9291a0cd | 2334 | static void |
97a1449a SM |
2335 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2336 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2337 | bool skip_partial) | |
9291a0cd | 2338 | { |
f4dc4d17 DE |
2339 | /* Skip type_unit_groups, reading the type units they contain |
2340 | is handled elsewhere. */ | |
197400e8 | 2341 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2342 | return; |
2343 | ||
b303c6f6 AB |
2344 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2345 | the queue. After this point we're guaranteed to leave this function | |
2346 | with the dwarf queue empty. */ | |
39856def | 2347 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2348 | |
af758d11 | 2349 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
95554aad | 2350 | { |
120ce1b5 | 2351 | queue_comp_unit (per_cu, dwarf2_per_objfile, language_minimal); |
1b555f17 | 2352 | dwarf2_cu *cu = load_cu (per_cu, dwarf2_per_objfile, skip_partial); |
89e63ee4 DE |
2353 | |
2354 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2355 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2356 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2357 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2358 | && cu != NULL |
2359 | && cu->dwo_unit != NULL | |
5989a64e SM |
2360 | && dwarf2_per_objfile->per_bfd->index_table != NULL |
2361 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2362 | /* DWP files aren't supported yet. */ |
ed2dc618 | 2363 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
1b555f17 | 2364 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2365 | } |
9291a0cd | 2366 | |
ed2dc618 | 2367 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2368 | |
2369 | /* Age the cache, releasing compilation units that have not | |
2370 | been used recently. */ | |
7188ed02 | 2371 | dwarf2_per_objfile->age_comp_units (); |
9291a0cd TT |
2372 | } |
2373 | ||
97a1449a SM |
2374 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2375 | the per-objfile for which this symtab is instantiated. | |
2376 | ||
2377 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2378 | |
43f3e411 | 2379 | static struct compunit_symtab * |
97a1449a SM |
2380 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2381 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2382 | bool skip_partial) | |
9291a0cd | 2383 | { |
5989a64e | 2384 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
af758d11 SM |
2385 | |
2386 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) | |
9291a0cd | 2387 | { |
11ed8cad | 2388 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2389 | scoped_restore decrementer = increment_reading_symtab (); |
97a1449a | 2390 | dw2_do_instantiate_symtab (per_cu, dwarf2_per_objfile, skip_partial); |
ed2dc618 | 2391 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2392 | } |
f194fefb | 2393 | |
af758d11 | 2394 | return dwarf2_per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2395 | } |
2396 | ||
ff4c9fec | 2397 | /* See declaration. */ |
f4dc4d17 | 2398 | |
ff4c9fec | 2399 | dwarf2_per_cu_data * |
5989a64e | 2400 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2401 | { |
b76e467d | 2402 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2403 | { |
b76e467d | 2404 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2405 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2406 | return &this->all_type_units[index]->per_cu; |
2407 | } | |
f4dc4d17 | 2408 | |
ff4c9fec SM |
2409 | return this->all_comp_units[index]; |
2410 | } | |
f4dc4d17 | 2411 | |
ff4c9fec | 2412 | /* See declaration. */ |
2fdf6df6 | 2413 | |
ff4c9fec | 2414 | dwarf2_per_cu_data * |
5989a64e | 2415 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2416 | { |
b76e467d | 2417 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2418 | |
ff4c9fec | 2419 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2420 | } |
2421 | ||
ff4c9fec | 2422 | /* See declaration. */ |
f4dc4d17 | 2423 | |
ff4c9fec | 2424 | signatured_type * |
5989a64e | 2425 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2426 | { |
b2bdb8cf | 2427 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2428 | |
ff4c9fec | 2429 | return this->all_type_units[index]; |
1fd400ff TT |
2430 | } |
2431 | ||
d3473f0c TT |
2432 | /* See read.h. */ |
2433 | ||
2434 | dwarf2_per_cu_data * | |
5989a64e | 2435 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2436 | { |
2437 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2438 | result->per_bfd = this; |
d3473f0c TT |
2439 | result->index = m_num_psymtabs++; |
2440 | return result; | |
2441 | } | |
2442 | ||
2443 | /* See read.h. */ | |
2444 | ||
2445 | signatured_type * | |
5989a64e | 2446 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2447 | { |
2448 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2449 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2450 | result->per_cu.index = m_num_psymtabs++; |
2451 | return result; | |
2452 | } | |
2453 | ||
168c9250 | 2454 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2455 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2456 | |
2457 | static dwarf2_per_cu_data * | |
168c9250 SM |
2458 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2459 | struct dwarf2_section_info *section, | |
2460 | int is_dwz, | |
2461 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2462 | { |
168c9250 | 2463 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2464 | the_cu->sect_off = sect_off; |
2465 | the_cu->length = length; | |
4b514bc8 | 2466 | the_cu->section = section; |
168c9250 | 2467 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2468 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2469 | the_cu->is_dwz = is_dwz; |
2470 | return the_cu; | |
2471 | } | |
2472 | ||
2ec9a5e0 TT |
2473 | /* A helper for create_cus_from_index that handles a given list of |
2474 | CUs. */ | |
2fdf6df6 | 2475 | |
74a0d9f6 | 2476 | static void |
168c9250 | 2477 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2478 | const gdb_byte *cu_list, offset_type n_elements, |
2479 | struct dwarf2_section_info *section, | |
b76e467d | 2480 | int is_dwz) |
9291a0cd | 2481 | { |
12359b5e | 2482 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2483 | { |
74a0d9f6 | 2484 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2485 | |
2486 | sect_offset sect_off | |
2487 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2488 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2489 | cu_list += 2 * 8; |
2490 | ||
b76e467d | 2491 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2492 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2493 | length); | |
2494 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2495 | } |
9291a0cd TT |
2496 | } |
2497 | ||
2ec9a5e0 | 2498 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2499 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2500 | |
74a0d9f6 | 2501 | static void |
168c9250 | 2502 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2503 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2504 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2505 | { | |
168c9250 SM |
2506 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2507 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2508 | |
168c9250 SM |
2509 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2510 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2511 | |
2512 | if (dwz_elements == 0) | |
74a0d9f6 | 2513 | return; |
2ec9a5e0 | 2514 | |
168c9250 SM |
2515 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2516 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2517 | &dwz->info, 1); |
2ec9a5e0 TT |
2518 | } |
2519 | ||
1fd400ff | 2520 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2521 | |
74a0d9f6 | 2522 | static void |
12359b5e | 2523 | create_signatured_type_table_from_index |
168c9250 SM |
2524 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2525 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2526 | { |
168c9250 SM |
2527 | gdb_assert (per_bfd->all_type_units.empty ()); |
2528 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2529 | |
298e9637 | 2530 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2531 | |
12359b5e | 2532 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2533 | { |
52dc124a | 2534 | struct signatured_type *sig_type; |
9c541725 | 2535 | ULONGEST signature; |
1fd400ff | 2536 | void **slot; |
9c541725 | 2537 | cu_offset type_offset_in_tu; |
1fd400ff | 2538 | |
74a0d9f6 | 2539 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2540 | sect_offset sect_off |
2541 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2542 | type_offset_in_tu | |
2543 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2544 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2545 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2546 | bytes += 3 * 8; | |
2547 | ||
168c9250 | 2548 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2549 | sig_type->signature = signature; |
9c541725 | 2550 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2551 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2552 | sig_type->per_cu.section = section; |
9c541725 | 2553 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2554 | sig_type->per_cu.v.quick |
168c9250 | 2555 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2556 | struct dwarf2_per_cu_quick_data); |
2557 | ||
b0b6a987 | 2558 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2559 | *slot = sig_type; |
1fd400ff | 2560 | |
168c9250 | 2561 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2562 | } |
2563 | ||
168c9250 | 2564 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2565 | } |
2566 | ||
927aa2e7 JK |
2567 | /* Create the signatured type hash table from .debug_names. */ |
2568 | ||
2569 | static void | |
2570 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2571 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2572 | const mapped_debug_names &map, |
2573 | struct dwarf2_section_info *section, | |
2574 | struct dwarf2_section_info *abbrev_section) | |
2575 | { | |
ed2dc618 SM |
2576 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2577 | ||
96b79293 TT |
2578 | section->read (objfile); |
2579 | abbrev_section->read (objfile); | |
927aa2e7 | 2580 | |
5989a64e SM |
2581 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
2582 | dwarf2_per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2583 | |
298e9637 | 2584 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2585 | |
2586 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2587 | { | |
2588 | struct signatured_type *sig_type; | |
927aa2e7 | 2589 | void **slot; |
927aa2e7 JK |
2590 | |
2591 | sect_offset sect_off | |
2592 | = (sect_offset) (extract_unsigned_integer | |
2593 | (map.tu_table_reordered + i * map.offset_size, | |
2594 | map.offset_size, | |
2595 | map.dwarf5_byte_order)); | |
2596 | ||
2597 | comp_unit_head cu_header; | |
ed2dc618 SM |
2598 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2599 | abbrev_section, | |
927aa2e7 JK |
2600 | section->buffer + to_underlying (sect_off), |
2601 | rcuh_kind::TYPE); | |
2602 | ||
5989a64e | 2603 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2604 | sig_type->signature = cu_header.signature; |
2605 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2606 | sig_type->per_cu.is_debug_types = 1; | |
2607 | sig_type->per_cu.section = section; | |
2608 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2609 | sig_type->per_cu.v.quick |
5989a64e | 2610 | = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2611 | struct dwarf2_per_cu_quick_data); |
2612 | ||
b0b6a987 | 2613 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2614 | *slot = sig_type; |
2615 | ||
5989a64e | 2616 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2617 | } |
2618 | ||
5989a64e | 2619 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2620 | } |
2621 | ||
9291a0cd TT |
2622 | /* Read the address map data from the mapped index, and use it to |
2623 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2624 | |
9291a0cd | 2625 | static void |
ed2dc618 SM |
2626 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2627 | struct mapped_index *index) | |
9291a0cd | 2628 | { |
ed2dc618 | 2629 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 2630 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2631 | const gdb_byte *iter, *end; |
9291a0cd | 2632 | struct addrmap *mutable_map; |
9291a0cd TT |
2633 | CORE_ADDR baseaddr; |
2634 | ||
8268c778 PA |
2635 | auto_obstack temp_obstack; |
2636 | ||
9291a0cd TT |
2637 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2638 | ||
f00a2de2 PA |
2639 | iter = index->address_table.data (); |
2640 | end = iter + index->address_table.size (); | |
9291a0cd | 2641 | |
b3b3bada | 2642 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2643 | |
2644 | while (iter < end) | |
2645 | { | |
2646 | ULONGEST hi, lo, cu_index; | |
2647 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2648 | iter += 8; | |
2649 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2650 | iter += 8; | |
2651 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2652 | iter += 4; | |
f652bce2 | 2653 | |
24a55014 | 2654 | if (lo > hi) |
f652bce2 | 2655 | { |
b98664d3 | 2656 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2657 | hex_string (lo), hex_string (hi)); |
24a55014 | 2658 | continue; |
f652bce2 | 2659 | } |
24a55014 | 2660 | |
5989a64e | 2661 | if (cu_index >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2662 | { |
b98664d3 | 2663 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2664 | (unsigned) cu_index); |
24a55014 | 2665 | continue; |
f652bce2 | 2666 | } |
24a55014 | 2667 | |
79748972 TT |
2668 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2669 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2670 | addrmap_set_empty (mutable_map, lo, hi - 1, |
5989a64e | 2671 | dwarf2_per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2672 | } |
2673 | ||
d320c2b5 | 2674 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2675 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2676 | } |
2677 | ||
927aa2e7 JK |
2678 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2679 | populate the objfile's psymtabs_addrmap. */ | |
2680 | ||
2681 | static void | |
ed2dc618 | 2682 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2683 | struct dwarf2_section_info *section) |
2684 | { | |
ed2dc618 | 2685 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 | 2686 | bfd *abfd = objfile->obfd; |
08feed99 | 2687 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2688 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2689 | |
2690 | auto_obstack temp_obstack; | |
2691 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2692 | ||
2693 | std::unordered_map<sect_offset, | |
2694 | dwarf2_per_cu_data *, | |
2695 | gdb::hash_enum<sect_offset>> | |
2696 | debug_info_offset_to_per_cu; | |
5989a64e | 2697 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2698 | { |
927aa2e7 JK |
2699 | const auto insertpair |
2700 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2701 | if (!insertpair.second) | |
2702 | { | |
2703 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2704 | "debug_info_offset %s, ignoring .debug_aranges."), |
2705 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2706 | return; |
2707 | } | |
2708 | } | |
2709 | ||
96b79293 | 2710 | section->read (objfile); |
927aa2e7 JK |
2711 | |
2712 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2713 | ||
2714 | const gdb_byte *addr = section->buffer; | |
2715 | ||
2716 | while (addr < section->buffer + section->size) | |
2717 | { | |
2718 | const gdb_byte *const entry_addr = addr; | |
2719 | unsigned int bytes_read; | |
2720 | ||
2721 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2722 | &bytes_read); | |
2723 | addr += bytes_read; | |
2724 | ||
2725 | const gdb_byte *const entry_end = addr + entry_length; | |
2726 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2727 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2728 | if (addr + entry_length > section->buffer + section->size) | |
2729 | { | |
47e3f474 | 2730 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2731 | "length %s exceeds section length %s, " |
2732 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2733 | objfile_name (objfile), |
2734 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2735 | plongest (bytes_read + entry_length), |
2736 | pulongest (section->size)); | |
2737 | return; | |
2738 | } | |
2739 | ||
2740 | /* The version number. */ | |
2741 | const uint16_t version = read_2_bytes (abfd, addr); | |
2742 | addr += 2; | |
2743 | if (version != 2) | |
2744 | { | |
47e3f474 | 2745 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2746 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2747 | objfile_name (objfile), |
2748 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2749 | return; |
2750 | } | |
2751 | ||
2752 | const uint64_t debug_info_offset | |
2753 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2754 | addr += offset_size; | |
2755 | const auto per_cu_it | |
2756 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2757 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2758 | { | |
47e3f474 | 2759 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2760 | "debug_info_offset %s does not exists, " |
2761 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2762 | objfile_name (objfile), |
2763 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2764 | pulongest (debug_info_offset)); |
2765 | return; | |
2766 | } | |
2767 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2768 | ||
2769 | const uint8_t address_size = *addr++; | |
2770 | if (address_size < 1 || address_size > 8) | |
2771 | { | |
47e3f474 | 2772 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2773 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2774 | objfile_name (objfile), |
2775 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2776 | return; |
2777 | } | |
2778 | ||
2779 | const uint8_t segment_selector_size = *addr++; | |
2780 | if (segment_selector_size != 0) | |
2781 | { | |
47e3f474 | 2782 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2783 | "segment_selector_size %u is not supported, " |
2784 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2785 | objfile_name (objfile), |
2786 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2787 | segment_selector_size); |
2788 | return; | |
2789 | } | |
2790 | ||
2791 | /* Must pad to an alignment boundary that is twice the address | |
2792 | size. It is undocumented by the DWARF standard but GCC does | |
2793 | use it. */ | |
2794 | for (size_t padding = ((-(addr - section->buffer)) | |
2795 | & (2 * address_size - 1)); | |
2796 | padding > 0; padding--) | |
2797 | if (*addr++ != 0) | |
2798 | { | |
47e3f474 | 2799 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2800 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2801 | objfile_name (objfile), |
2802 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2803 | return; |
2804 | } | |
2805 | ||
2806 | for (;;) | |
2807 | { | |
2808 | if (addr + 2 * address_size > entry_end) | |
2809 | { | |
47e3f474 | 2810 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2811 | "address list is not properly terminated, " |
2812 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2813 | objfile_name (objfile), |
2814 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2815 | return; |
2816 | } | |
2817 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2818 | dwarf5_byte_order); | |
2819 | addr += address_size; | |
2820 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2821 | dwarf5_byte_order); | |
2822 | addr += address_size; | |
2823 | if (start == 0 && length == 0) | |
2824 | break; | |
5989a64e | 2825 | if (start == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2826 | { |
2827 | /* Symbol was eliminated due to a COMDAT group. */ | |
2828 | continue; | |
2829 | } | |
2830 | ULONGEST end = start + length; | |
79748972 TT |
2831 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2832 | - baseaddr); | |
2833 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2834 | - baseaddr); | |
927aa2e7 JK |
2835 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2836 | } | |
2837 | } | |
2838 | ||
d320c2b5 | 2839 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2840 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2841 | } |
2842 | ||
9291a0cd TT |
2843 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2844 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2845 | constant pool and return true. If NAME cannot be found, return |
2846 | false. */ | |
2fdf6df6 | 2847 | |
109483d9 | 2848 | static bool |
9291a0cd TT |
2849 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2850 | offset_type **vec_out) | |
2851 | { | |
0cf03b49 | 2852 | offset_type hash; |
9291a0cd | 2853 | offset_type slot, step; |
559a7a62 | 2854 | int (*cmp) (const char *, const char *); |
9291a0cd | 2855 | |
791afaa2 | 2856 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2857 | if (current_language->la_language == language_cplus |
45280282 IB |
2858 | || current_language->la_language == language_fortran |
2859 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2860 | { |
2861 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2862 | not contain any. */ | |
a8719064 | 2863 | |
72998fb3 | 2864 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2865 | { |
109483d9 | 2866 | without_params = cp_remove_params (name); |
0cf03b49 | 2867 | |
72998fb3 | 2868 | if (without_params != NULL) |
791afaa2 | 2869 | name = without_params.get (); |
0cf03b49 JK |
2870 | } |
2871 | } | |
2872 | ||
559a7a62 | 2873 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2874 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2875 | simulate our NAME being searched is also lowercased. */ |
2876 | hash = mapped_index_string_hash ((index->version == 4 | |
2877 | && case_sensitivity == case_sensitive_off | |
2878 | ? 5 : index->version), | |
2879 | name); | |
2880 | ||
f00a2de2 PA |
2881 | slot = hash & (index->symbol_table.size () - 1); |
2882 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2883 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2884 | |
2885 | for (;;) | |
2886 | { | |
9291a0cd | 2887 | const char *str; |
f00a2de2 PA |
2888 | |
2889 | const auto &bucket = index->symbol_table[slot]; | |
2890 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2891 | return false; |
9291a0cd | 2892 | |
f00a2de2 | 2893 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2894 | if (!cmp (name, str)) |
9291a0cd TT |
2895 | { |
2896 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2897 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2898 | return true; |
9291a0cd TT |
2899 | } |
2900 | ||
f00a2de2 | 2901 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2902 | } |
2903 | } | |
2904 | ||
4485a1c1 SM |
2905 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2906 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2907 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2908 | ok to use deprecated sections. |
2909 | ||
2910 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2911 | out parameters that are filled in with information about the CU and | |
2912 | TU lists in the section. | |
2913 | ||
4485a1c1 | 2914 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2915 | |
d33bc52e | 2916 | static bool |
3810f182 | 2917 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2918 | bool deprecated_ok, |
2919 | gdb::array_view<const gdb_byte> buffer, | |
2920 | struct mapped_index *map, | |
2921 | const gdb_byte **cu_list, | |
2922 | offset_type *cu_list_elements, | |
2923 | const gdb_byte **types_list, | |
2924 | offset_type *types_list_elements) | |
2925 | { | |
2926 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2927 | |
9291a0cd | 2928 | /* Version check. */ |
4485a1c1 | 2929 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2930 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2931 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2932 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2933 | indices. */ |
831adc1f | 2934 | if (version < 4) |
481860b3 GB |
2935 | { |
2936 | static int warning_printed = 0; | |
2937 | if (!warning_printed) | |
2938 | { | |
2939 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2940 | filename); |
481860b3 GB |
2941 | warning_printed = 1; |
2942 | } | |
2943 | return 0; | |
2944 | } | |
2945 | /* Index version 4 uses a different hash function than index version | |
2946 | 5 and later. | |
2947 | ||
2948 | Versions earlier than 6 did not emit psymbols for inlined | |
2949 | functions. Using these files will cause GDB not to be able to | |
2950 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2951 | indices unless the user has done |
2952 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2953 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2954 | { |
2955 | static int warning_printed = 0; | |
2956 | if (!warning_printed) | |
2957 | { | |
e615022a DE |
2958 | warning (_("\ |
2959 | Skipping deprecated .gdb_index section in %s.\n\ | |
2960 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2961 | to use the section anyway."), | |
2ec9a5e0 | 2962 | filename); |
481860b3 GB |
2963 | warning_printed = 1; |
2964 | } | |
2965 | return 0; | |
2966 | } | |
796a7ff8 | 2967 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2968 | of the TU (for symbols coming from TUs), |
2969 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2970 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2971 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2972 | These are just performance bugs, and we can't distinguish gdb-generated | |
2973 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2974 | |
481860b3 | 2975 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2976 | longer backward compatible. */ |
796a7ff8 | 2977 | if (version > 8) |
594e8718 | 2978 | return 0; |
9291a0cd | 2979 | |
559a7a62 | 2980 | map->version = version; |
9291a0cd | 2981 | |
4485a1c1 | 2982 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 2983 | |
4485a1c1 | 2984 | int i = 0; |
2ec9a5e0 TT |
2985 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2986 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2987 | / 8); | |
1fd400ff TT |
2988 | ++i; |
2989 | ||
2ec9a5e0 TT |
2990 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2991 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2992 | - MAYBE_SWAP (metadata[i])) | |
2993 | / 8); | |
987d643c | 2994 | ++i; |
1fd400ff | 2995 | |
f00a2de2 PA |
2996 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
2997 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2998 | map->address_table | |
2999 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3000 | ++i; |
3001 | ||
f00a2de2 PA |
3002 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3003 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3004 | map->symbol_table | |
3005 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3006 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3007 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3008 | |
f00a2de2 | 3009 | ++i; |
f9d83a0b | 3010 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3011 | |
2ec9a5e0 TT |
3012 | return 1; |
3013 | } | |
3014 | ||
4485a1c1 SM |
3015 | /* Callback types for dwarf2_read_gdb_index. */ |
3016 | ||
3017 | typedef gdb::function_view | |
5989a64e | 3018 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3019 | get_gdb_index_contents_ftype; |
3020 | typedef gdb::function_view | |
3021 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3022 | get_gdb_index_contents_dwz_ftype; | |
3023 | ||
927aa2e7 | 3024 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3025 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3026 | ||
3027 | static int | |
4485a1c1 SM |
3028 | dwarf2_read_gdb_index |
3029 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3030 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3031 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3032 | { |
2ec9a5e0 TT |
3033 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3034 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3035 | struct dwz_file *dwz; |
12359b5e | 3036 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3037 | |
4485a1c1 | 3038 | gdb::array_view<const gdb_byte> main_index_contents |
5989a64e | 3039 | = get_gdb_index_contents (objfile, dwarf2_per_objfile->per_bfd); |
4485a1c1 SM |
3040 | |
3041 | if (main_index_contents.empty ()) | |
3042 | return 0; | |
3043 | ||
3063847f | 3044 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3045 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3046 | use_deprecated_index_sections, |
3047 | main_index_contents, map.get (), &cu_list, | |
3048 | &cu_list_elements, &types_list, | |
3049 | &types_list_elements)) | |
2ec9a5e0 TT |
3050 | return 0; |
3051 | ||
0fefef59 | 3052 | /* Don't use the index if it's empty. */ |
3063847f | 3053 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3054 | return 0; |
3055 | ||
2ec9a5e0 TT |
3056 | /* If there is a .dwz file, read it so we can get its CU list as |
3057 | well. */ | |
c3699833 | 3058 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 3059 | if (dwz != NULL) |
2ec9a5e0 | 3060 | { |
2ec9a5e0 TT |
3061 | struct mapped_index dwz_map; |
3062 | const gdb_byte *dwz_types_ignore; | |
3063 | offset_type dwz_types_elements_ignore; | |
3064 | ||
4485a1c1 SM |
3065 | gdb::array_view<const gdb_byte> dwz_index_content |
3066 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3067 | ||
3068 | if (dwz_index_content.empty ()) | |
3069 | return 0; | |
3070 | ||
3810f182 | 3071 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3072 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3073 | &dwz_list, &dwz_list_elements, |
3074 | &dwz_types_ignore, | |
3075 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3076 | { |
3077 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3078 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3079 | return 0; |
3080 | } | |
3081 | } | |
3082 | ||
168c9250 | 3083 | create_cus_from_index (dwarf2_per_objfile->per_bfd, cu_list, cu_list_elements, |
12359b5e | 3084 | dwz_list, dwz_list_elements); |
1fd400ff | 3085 | |
8b70b953 TT |
3086 | if (types_list_elements) |
3087 | { | |
8b70b953 TT |
3088 | /* We can only handle a single .debug_types when we have an |
3089 | index. */ | |
5989a64e | 3090 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
8b70b953 TT |
3091 | return 0; |
3092 | ||
5989a64e | 3093 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
8b70b953 | 3094 | |
168c9250 SM |
3095 | create_signatured_type_table_from_index (dwarf2_per_objfile->per_bfd, |
3096 | section, types_list, | |
3097 | types_list_elements); | |
8b70b953 | 3098 | } |
9291a0cd | 3099 | |
3063847f | 3100 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3101 | |
5989a64e SM |
3102 | dwarf2_per_objfile->per_bfd->index_table = std::move (map); |
3103 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
3104 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
3105 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
9291a0cd TT |
3106 | |
3107 | return 1; | |
3108 | } | |
3109 | ||
dee91e82 | 3110 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3111 | |
dee91e82 DE |
3112 | static void |
3113 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3114 | const gdb_byte *info_ptr, |
3e225074 | 3115 | struct die_info *comp_unit_die) |
9291a0cd | 3116 | { |
dee91e82 | 3117 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3118 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
5e22e966 | 3119 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
094b34ac | 3120 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3121 | struct attribute *attr; |
7b9f3c50 DE |
3122 | void **slot; |
3123 | struct quick_file_names *qfn; | |
9291a0cd | 3124 | |
0186c6a7 DE |
3125 | gdb_assert (! this_cu->is_debug_types); |
3126 | ||
07261596 TT |
3127 | /* Our callers never want to match partial units -- instead they |
3128 | will match the enclosing full CU. */ | |
3129 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3130 | { | |
3131 | this_cu->v.quick->no_file_data = 1; | |
3132 | return; | |
3133 | } | |
3134 | ||
0186c6a7 | 3135 | lh_cu = this_cu; |
7b9f3c50 | 3136 | slot = NULL; |
dee91e82 | 3137 | |
fff8551c | 3138 | line_header_up lh; |
9c541725 | 3139 | sect_offset line_offset {}; |
fff8551c | 3140 | |
dee91e82 | 3141 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3142 | if (attr != nullptr) |
9291a0cd | 3143 | { |
7b9f3c50 DE |
3144 | struct quick_file_names find_entry; |
3145 | ||
9c541725 | 3146 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3147 | |
3148 | /* We may have already read in this line header (TU line header sharing). | |
3149 | If we have we're done. */ | |
094b34ac | 3150 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3151 | find_entry.hash.line_sect_off = line_offset; |
5989a64e | 3152 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3153 | &find_entry, INSERT); |
3154 | if (*slot != NULL) | |
3155 | { | |
9a3c8263 | 3156 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3157 | return; |
7b9f3c50 DE |
3158 | } |
3159 | ||
3019eac3 | 3160 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3161 | } |
3162 | if (lh == NULL) | |
3163 | { | |
094b34ac | 3164 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3165 | return; |
9291a0cd TT |
3166 | } |
3167 | ||
5989a64e | 3168 | qfn = XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3169 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3170 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3171 | gdb_assert (slot != NULL); |
3172 | *slot = qfn; | |
9291a0cd | 3173 | |
d721ba37 | 3174 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3175 | |
aa391654 TT |
3176 | int offset = 0; |
3177 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3178 | ++offset; | |
3179 | ||
7ba99d21 | 3180 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3181 | qfn->file_names = |
5989a64e | 3182 | XOBNEWVEC (&dwarf2_per_objfile->per_bfd->obstack, const char *, |
45940949 | 3183 | qfn->num_file_names); |
aa391654 TT |
3184 | if (offset != 0) |
3185 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3186 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3187 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3188 | fnd.comp_dir).release (); | |
7b9f3c50 | 3189 | qfn->real_names = NULL; |
9291a0cd | 3190 | |
094b34ac | 3191 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3192 | } |
3193 | ||
3194 | /* A helper for the "quick" functions which attempts to read the line | |
3195 | table for THIS_CU. */ | |
3196 | ||
3197 | static struct quick_file_names * | |
ab432490 SM |
3198 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3199 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3200 | { |
0186c6a7 DE |
3201 | /* This should never be called for TUs. */ |
3202 | gdb_assert (! this_cu->is_debug_types); | |
3203 | /* Nor type unit groups. */ | |
197400e8 | 3204 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3205 | |
dee91e82 DE |
3206 | if (this_cu->v.quick->file_names != NULL) |
3207 | return this_cu->v.quick->file_names; | |
3208 | /* If we know there is no line data, no point in looking again. */ | |
3209 | if (this_cu->v.quick->no_file_data) | |
3210 | return NULL; | |
3211 | ||
ab432490 | 3212 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3213 | if (!reader.dummy_p) |
3e225074 | 3214 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3215 | |
3216 | if (this_cu->v.quick->no_file_data) | |
3217 | return NULL; | |
3218 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3219 | } |
3220 | ||
3221 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3222 | real path for a given file name from the line table. */ |
2fdf6df6 | 3223 | |
9291a0cd | 3224 | static const char * |
45940949 | 3225 | dw2_get_real_path (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7b9f3c50 | 3226 | struct quick_file_names *qfn, int index) |
9291a0cd | 3227 | { |
7b9f3c50 | 3228 | if (qfn->real_names == NULL) |
5989a64e | 3229 | qfn->real_names = OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
26f2dc30 | 3230 | qfn->num_file_names, const char *); |
9291a0cd | 3231 | |
7b9f3c50 | 3232 | if (qfn->real_names[index] == NULL) |
14278e1f | 3233 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3234 | |
7b9f3c50 | 3235 | return qfn->real_names[index]; |
9291a0cd TT |
3236 | } |
3237 | ||
3238 | static struct symtab * | |
3239 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3240 | { | |
ed2dc618 SM |
3241 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3242 | = get_dwarf2_per_objfile (objfile); | |
5989a64e | 3243 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->per_bfd->all_comp_units.back (); |
97a1449a SM |
3244 | compunit_symtab *cust |
3245 | = dw2_instantiate_symtab (dwarf_cu, dwarf2_per_objfile, false); | |
ae2de4f8 | 3246 | |
43f3e411 DE |
3247 | if (cust == NULL) |
3248 | return NULL; | |
ed2dc618 | 3249 | |
43f3e411 | 3250 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3251 | } |
3252 | ||
7b9f3c50 DE |
3253 | /* Traversal function for dw2_forget_cached_source_info. */ |
3254 | ||
3255 | static int | |
3256 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3257 | { |
7b9f3c50 | 3258 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3259 | |
7b9f3c50 | 3260 | if (file_data->real_names) |
9291a0cd | 3261 | { |
7b9f3c50 | 3262 | int i; |
9291a0cd | 3263 | |
7b9f3c50 | 3264 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3265 | { |
7b9f3c50 DE |
3266 | xfree ((void*) file_data->real_names[i]); |
3267 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3268 | } |
3269 | } | |
7b9f3c50 DE |
3270 | |
3271 | return 1; | |
3272 | } | |
3273 | ||
3274 | static void | |
3275 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3276 | { | |
ed2dc618 SM |
3277 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3278 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3279 | |
5989a64e | 3280 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3281 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3282 | } |
3283 | ||
f8eba3c6 TT |
3284 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3285 | the symtabs and calls the iterator. */ | |
3286 | ||
3287 | static int | |
3288 | dw2_map_expand_apply (struct objfile *objfile, | |
3289 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3290 | const char *name, const char *real_path, |
14bc53a8 | 3291 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3292 | { |
43f3e411 | 3293 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3294 | |
3295 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3296 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3297 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3298 | return 0; |
3299 | ||
3300 | /* This may expand more than one symtab, and we want to iterate over | |
3301 | all of them. */ | |
97a1449a | 3302 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3303 | |
14bc53a8 PA |
3304 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3305 | last_made, callback); | |
f8eba3c6 TT |
3306 | } |
3307 | ||
3308 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3309 | ||
14bc53a8 PA |
3310 | static bool |
3311 | dw2_map_symtabs_matching_filename | |
3312 | (struct objfile *objfile, const char *name, const char *real_path, | |
3313 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3314 | { |
c011a4f4 | 3315 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3316 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3317 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3318 | |
848e3e78 DE |
3319 | /* The rule is CUs specify all the files, including those used by |
3320 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3321 | |
5989a64e | 3322 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3323 | { |
3d7bb9d9 | 3324 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3325 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3326 | continue; |
3327 | ||
ab432490 SM |
3328 | quick_file_names *file_data |
3329 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
7b9f3c50 | 3330 | if (file_data == NULL) |
9291a0cd TT |
3331 | continue; |
3332 | ||
b76e467d | 3333 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3334 | { |
7b9f3c50 | 3335 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3336 | const char *this_real_name; |
9291a0cd | 3337 | |
af529f8f | 3338 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3339 | { |
f5b95b50 | 3340 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3341 | callback)) |
3342 | return true; | |
288e77a7 | 3343 | continue; |
4aac40c8 | 3344 | } |
9291a0cd | 3345 | |
c011a4f4 DE |
3346 | /* Before we invoke realpath, which can get expensive when many |
3347 | files are involved, do a quick comparison of the basenames. */ | |
3348 | if (! basenames_may_differ | |
3349 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3350 | continue; | |
3351 | ||
45940949 TT |
3352 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
3353 | file_data, j); | |
da235a7c | 3354 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3355 | { |
da235a7c | 3356 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3357 | callback)) |
3358 | return true; | |
288e77a7 | 3359 | continue; |
da235a7c | 3360 | } |
9291a0cd | 3361 | |
da235a7c JK |
3362 | if (real_path != NULL) |
3363 | { | |
af529f8f JK |
3364 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3365 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3366 | if (this_real_name != NULL |
af529f8f | 3367 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3368 | { |
f5b95b50 | 3369 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3370 | callback)) |
3371 | return true; | |
288e77a7 | 3372 | continue; |
9291a0cd TT |
3373 | } |
3374 | } | |
3375 | } | |
3376 | } | |
3377 | ||
14bc53a8 | 3378 | return false; |
9291a0cd TT |
3379 | } |
3380 | ||
da51c347 DE |
3381 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3382 | ||
3383 | struct dw2_symtab_iterator | |
9291a0cd | 3384 | { |
ed2dc618 SM |
3385 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3386 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3387 | /* If set, only look for symbols that match that block. Valid values are |
3388 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3389 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3390 | /* The kind of symbol we're looking for. */ |
3391 | domain_enum domain; | |
3392 | /* The list of CUs from the index entry of the symbol, | |
3393 | or NULL if not found. */ | |
3394 | offset_type *vec; | |
3395 | /* The next element in VEC to look at. */ | |
3396 | int next; | |
3397 | /* The number of elements in VEC, or zero if there is no match. */ | |
3398 | int length; | |
8943b874 DE |
3399 | /* Have we seen a global version of the symbol? |
3400 | If so we can ignore all further global instances. | |
3401 | This is to work around gold/15646, inefficient gold-generated | |
3402 | indices. */ | |
3403 | int global_seen; | |
da51c347 | 3404 | }; |
9291a0cd | 3405 | |
2b79f376 | 3406 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3407 | |
9291a0cd | 3408 | static void |
da51c347 | 3409 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3410 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3411 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3412 | domain_enum domain, |
3413 | const char *name) | |
3414 | { | |
ed2dc618 | 3415 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3416 | iter->block_index = block_index; |
3417 | iter->domain = domain; | |
3418 | iter->next = 0; | |
8943b874 | 3419 | iter->global_seen = 0; |
da51c347 | 3420 | |
5989a64e | 3421 | mapped_index *index = dwarf2_per_objfile->per_bfd->index_table.get (); |
ed2dc618 SM |
3422 | |
3423 | /* index is NULL if OBJF_READNOW. */ | |
3424 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3425 | iter->length = MAYBE_SWAP (*iter->vec); |
3426 | else | |
3427 | { | |
3428 | iter->vec = NULL; | |
3429 | iter->length = 0; | |
3430 | } | |
3431 | } | |
3432 | ||
3433 | /* Return the next matching CU or NULL if there are no more. */ | |
3434 | ||
3435 | static struct dwarf2_per_cu_data * | |
3436 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3437 | { | |
ed2dc618 SM |
3438 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3439 | ||
da51c347 DE |
3440 | for ( ; iter->next < iter->length; ++iter->next) |
3441 | { | |
3442 | offset_type cu_index_and_attrs = | |
3443 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3444 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3445 | gdb_index_symbol_kind symbol_kind = |
3446 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3447 | /* Only check the symbol attributes if they're present. | |
3448 | Indices prior to version 7 don't record them, | |
3449 | and indices >= 7 may elide them for certain symbols | |
3450 | (gold does this). */ | |
3451 | int attrs_valid = | |
5989a64e | 3452 | (dwarf2_per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3453 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3454 | ||
3190f0c6 | 3455 | /* Don't crash on bad data. */ |
5989a64e SM |
3456 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3457 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3458 | { |
b98664d3 | 3459 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3460 | " [in module %s]"), |
3461 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3462 | continue; |
3463 | } | |
3464 | ||
5989a64e | 3465 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3466 | |
da51c347 | 3467 | /* Skip if already read in. */ |
af758d11 | 3468 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3469 | continue; |
3470 | ||
8943b874 DE |
3471 | /* Check static vs global. */ |
3472 | if (attrs_valid) | |
3473 | { | |
2b79f376 SM |
3474 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3475 | ||
3476 | if (iter->block_index.has_value ()) | |
3477 | { | |
3478 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3479 | ||
3480 | if (is_static != want_static) | |
3481 | continue; | |
3482 | } | |
3483 | ||
8943b874 DE |
3484 | /* Work around gold/15646. */ |
3485 | if (!is_static && iter->global_seen) | |
3486 | continue; | |
3487 | if (!is_static) | |
3488 | iter->global_seen = 1; | |
3489 | } | |
da51c347 DE |
3490 | |
3491 | /* Only check the symbol's kind if it has one. */ | |
3492 | if (attrs_valid) | |
3493 | { | |
3494 | switch (iter->domain) | |
3495 | { | |
3496 | case VAR_DOMAIN: | |
3497 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3498 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3499 | /* Some types are also in VAR_DOMAIN. */ | |
3500 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3501 | continue; | |
3502 | break; | |
3503 | case STRUCT_DOMAIN: | |
3504 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3505 | continue; | |
3506 | break; | |
3507 | case LABEL_DOMAIN: | |
3508 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3509 | continue; | |
3510 | break; | |
59c35742 AB |
3511 | case MODULE_DOMAIN: |
3512 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3513 | continue; | |
3514 | break; | |
da51c347 DE |
3515 | default: |
3516 | break; | |
3517 | } | |
3518 | } | |
3519 | ||
3520 | ++iter->next; | |
3521 | return per_cu; | |
3522 | } | |
3523 | ||
3524 | return NULL; | |
3525 | } | |
3526 | ||
43f3e411 | 3527 | static struct compunit_symtab * |
c7f839cb | 3528 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3529 | const char *name, domain_enum domain) |
9291a0cd | 3530 | { |
43f3e411 | 3531 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3532 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3533 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3534 | |
b5ec771e PA |
3535 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3536 | ||
ed2dc618 SM |
3537 | struct dw2_symtab_iterator iter; |
3538 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3539 | |
2b79f376 | 3540 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3541 | |
ed2dc618 SM |
3542 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3543 | { | |
3544 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
3545 | struct compunit_symtab *stab |
3546 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
ed2dc618 | 3547 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3548 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3549 | |
ed2dc618 SM |
3550 | sym = block_find_symbol (block, name, domain, |
3551 | block_find_non_opaque_type_preferred, | |
3552 | &with_opaque); | |
b2e2f908 | 3553 | |
ed2dc618 SM |
3554 | /* Some caution must be observed with overloaded functions |
3555 | and methods, since the index will not contain any overload | |
3556 | information (but NAME might contain it). */ | |
da51c347 | 3557 | |
ed2dc618 SM |
3558 | if (sym != NULL |
3559 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3560 | return stab; | |
3561 | if (with_opaque != NULL | |
3562 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3563 | stab_best = stab; | |
da51c347 | 3564 | |
ed2dc618 | 3565 | /* Keep looking through other CUs. */ |
9291a0cd | 3566 | } |
9291a0cd | 3567 | |
da51c347 | 3568 | return stab_best; |
9291a0cd TT |
3569 | } |
3570 | ||
3571 | static void | |
3572 | dw2_print_stats (struct objfile *objfile) | |
3573 | { | |
ed2dc618 SM |
3574 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3575 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3576 | int total = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3577 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3578 | int count = 0; |
9291a0cd | 3579 | |
ed2dc618 | 3580 | for (int i = 0; i < total; ++i) |
9291a0cd | 3581 | { |
5989a64e | 3582 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3583 | |
af758d11 | 3584 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3585 | ++count; |
3586 | } | |
e4a48d9d | 3587 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3588 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3589 | } | |
3590 | ||
779bd270 DE |
3591 | /* This dumps minimal information about the index. |
3592 | It is called via "mt print objfiles". | |
3593 | One use is to verify .gdb_index has been loaded by the | |
3594 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3595 | ||
9291a0cd TT |
3596 | static void |
3597 | dw2_dump (struct objfile *objfile) | |
3598 | { | |
ed2dc618 SM |
3599 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3600 | = get_dwarf2_per_objfile (objfile); | |
3601 | ||
5989a64e | 3602 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
779bd270 | 3603 | printf_filtered (".gdb_index:"); |
5989a64e | 3604 | if (dwarf2_per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3605 | { |
3606 | printf_filtered (" version %d\n", | |
5989a64e | 3607 | dwarf2_per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3608 | } |
3609 | else | |
3610 | printf_filtered (" faked for \"readnow\"\n"); | |
3611 | printf_filtered ("\n"); | |
9291a0cd TT |
3612 | } |
3613 | ||
9291a0cd TT |
3614 | static void |
3615 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3616 | const char *func_name) | |
3617 | { | |
ed2dc618 SM |
3618 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3619 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3620 | |
ed2dc618 SM |
3621 | struct dw2_symtab_iterator iter; |
3622 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3623 | |
2b79f376 | 3624 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3625 | |
ed2dc618 | 3626 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
97a1449a | 3627 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
da51c347 | 3628 | |
9291a0cd TT |
3629 | } |
3630 | ||
3631 | static void | |
3632 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3633 | { | |
ed2dc618 SM |
3634 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3635 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3636 | int total_units = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3637 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3638 | |
ed2dc618 | 3639 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3640 | { |
5989a64e | 3641 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3642 | |
58f0c718 TT |
3643 | /* We don't want to directly expand a partial CU, because if we |
3644 | read it with the wrong language, then assertion failures can | |
3645 | be triggered later on. See PR symtab/23010. So, tell | |
3646 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3647 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
97a1449a | 3648 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, true); |
9291a0cd TT |
3649 | } |
3650 | } | |
3651 | ||
3652 | static void | |
652a8996 JK |
3653 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3654 | const char *fullname) | |
9291a0cd | 3655 | { |
ed2dc618 SM |
3656 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3657 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3658 | |
3659 | /* We don't need to consider type units here. | |
3660 | This is only called for examining code, e.g. expand_line_sal. | |
3661 | There can be an order of magnitude (or more) more type units | |
3662 | than comp units, and we avoid them if we can. */ | |
3663 | ||
5989a64e | 3664 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3665 | { |
3d7bb9d9 | 3666 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3667 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3668 | continue; |
3669 | ||
ab432490 SM |
3670 | quick_file_names *file_data |
3671 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
7b9f3c50 | 3672 | if (file_data == NULL) |
9291a0cd TT |
3673 | continue; |
3674 | ||
b76e467d | 3675 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3676 | { |
652a8996 JK |
3677 | const char *this_fullname = file_data->file_names[j]; |
3678 | ||
3679 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3680 | { |
97a1449a | 3681 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
9291a0cd TT |
3682 | break; |
3683 | } | |
3684 | } | |
3685 | } | |
3686 | } | |
3687 | ||
9a0bacfb TV |
3688 | static void |
3689 | dw2_expand_symtabs_matching_symbol | |
3690 | (mapped_index_base &index, | |
3691 | const lookup_name_info &lookup_name_in, | |
3692 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3693 | enum search_domain kind, | |
3694 | gdb::function_view<bool (offset_type)> match_callback); | |
3695 | ||
3696 | static void | |
3697 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3698 | (dwarf2_per_cu_data *per_cu, |
3699 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3700 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3701 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3702 | ||
9291a0cd | 3703 | static void |
199b4314 TT |
3704 | dw2_map_matching_symbols |
3705 | (struct objfile *objfile, | |
b054970d | 3706 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3707 | int global, |
3708 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3709 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3710 | { |
1aa98955 TV |
3711 | /* Used for Ada. */ |
3712 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3713 | = get_dwarf2_per_objfile (objfile); | |
3714 | ||
9a0bacfb TV |
3715 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3716 | ||
5989a64e | 3717 | if (dwarf2_per_objfile->per_bfd->index_table != nullptr) |
1aa98955 TV |
3718 | { |
3719 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3720 | here though if the current language is Ada for a non-Ada objfile | |
9a0bacfb | 3721 | using GNU index. */ |
5989a64e | 3722 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
1aa98955 | 3723 | |
9a0bacfb TV |
3724 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3725 | auto matcher = [&] (const char *symname) | |
3726 | { | |
3727 | if (ordered_compare == nullptr) | |
3728 | return true; | |
3729 | return ordered_compare (symname, match_name) == 0; | |
3730 | }; | |
3731 | ||
3732 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3733 | [&] (offset_type namei) | |
3734 | { | |
3735 | struct dw2_symtab_iterator iter; | |
3736 | struct dwarf2_per_cu_data *per_cu; | |
3737 | ||
3738 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_kind, domain, | |
3739 | match_name); | |
3740 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
97a1449a SM |
3741 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
3742 | nullptr); | |
9a0bacfb TV |
3743 | return true; |
3744 | }); | |
3745 | } | |
3746 | else | |
3747 | { | |
3748 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3749 | proceed assuming all symtabs have been read in. */ | |
3750 | } | |
1aa98955 TV |
3751 | |
3752 | for (compunit_symtab *cust : objfile->compunits ()) | |
3753 | { | |
3754 | const struct block *block; | |
3755 | ||
3756 | if (cust == NULL) | |
3757 | continue; | |
3758 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3759 | if (!iterate_over_symbols_terminated (block, name, | |
3760 | domain, callback)) | |
3761 | return; | |
3762 | } | |
9291a0cd TT |
3763 | } |
3764 | ||
e1ef7d7a PA |
3765 | /* Starting from a search name, return the string that finds the upper |
3766 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3767 | list. Returns the empty string to indicate that the upper bound is | |
3768 | the end of the list. */ | |
3769 | ||
3770 | static std::string | |
3771 | make_sort_after_prefix_name (const char *search_name) | |
3772 | { | |
3773 | /* When looking to complete "func", we find the upper bound of all | |
3774 | symbols that start with "func" by looking for where we'd insert | |
3775 | the closest string that would follow "func" in lexicographical | |
3776 | order. Usually, that's "func"-with-last-character-incremented, | |
3777 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3778 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3779 | Especially mind the 0xff character, which is a valid character in | |
3780 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3781 | rule out compilers allowing it in identifiers. Note that | |
3782 | conveniently, strcmp/strcasecmp are specified to compare | |
3783 | characters interpreted as unsigned char. So what we do is treat | |
3784 | the whole string as a base 256 number composed of a sequence of | |
3785 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3786 | to 0, and carries 1 to the following more-significant position. | |
3787 | If the very first character in SEARCH_NAME ends up incremented | |
3788 | and carries/overflows, then the upper bound is the end of the | |
3789 | list. The string after the empty string is also the empty | |
3790 | string. | |
3791 | ||
3792 | Some examples of this operation: | |
3793 | ||
3794 | SEARCH_NAME => "+1" RESULT | |
3795 | ||
3796 | "abc" => "abd" | |
3797 | "ab\xff" => "ac" | |
3798 | "\xff" "a" "\xff" => "\xff" "b" | |
3799 | "\xff" => "" | |
3800 | "\xff\xff" => "" | |
3801 | "" => "" | |
3802 | ||
3803 | Then, with these symbols for example: | |
3804 | ||
3805 | func | |
3806 | func1 | |
3807 | fund | |
3808 | ||
3809 | completing "func" looks for symbols between "func" and | |
3810 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3811 | which finds "func" and "func1", but not "fund". | |
3812 | ||
3813 | And with: | |
3814 | ||
3815 | funcÿ (Latin1 'ÿ' [0xff]) | |
3816 | funcÿ1 | |
3817 | fund | |
3818 | ||
3819 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3820 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3821 | ||
3822 | And with: | |
3823 | ||
3824 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3825 | ÿÿ1 | |
3826 | ||
3827 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3828 | the end of the list. | |
3829 | */ | |
3830 | std::string after = search_name; | |
3831 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3832 | after.pop_back (); | |
3833 | if (!after.empty ()) | |
3834 | after.back () = (unsigned char) after.back () + 1; | |
3835 | return after; | |
3836 | } | |
3837 | ||
5c58de74 | 3838 | /* See declaration. */ |
61d96d7e | 3839 | |
5c58de74 PA |
3840 | std::pair<std::vector<name_component>::const_iterator, |
3841 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3842 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3843 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3844 | { |
5c58de74 PA |
3845 | auto *name_cmp |
3846 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3847 | |
3b00ef10 | 3848 | const char *lang_name |
e0802d59 | 3849 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3850 | |
3f563c84 PA |
3851 | /* Comparison function object for lower_bound that matches against a |
3852 | given symbol name. */ | |
3853 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3854 | const char *name) | |
3855 | { | |
5c58de74 | 3856 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3857 | const char *elem_name = elem_qualified + elem.name_offset; |
3858 | return name_cmp (elem_name, name) < 0; | |
3859 | }; | |
3860 | ||
3861 | /* Comparison function object for upper_bound that matches against a | |
3862 | given symbol name. */ | |
3863 | auto lookup_compare_upper = [&] (const char *name, | |
3864 | const name_component &elem) | |
3865 | { | |
5c58de74 | 3866 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3867 | const char *elem_name = elem_qualified + elem.name_offset; |
3868 | return name_cmp (name, elem_name) < 0; | |
3869 | }; | |
3870 | ||
5c58de74 PA |
3871 | auto begin = this->name_components.begin (); |
3872 | auto end = this->name_components.end (); | |
3f563c84 PA |
3873 | |
3874 | /* Find the lower bound. */ | |
3875 | auto lower = [&] () | |
3876 | { | |
3b00ef10 | 3877 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3878 | return begin; |
3879 | else | |
3b00ef10 | 3880 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3881 | } (); |
3882 | ||
3883 | /* Find the upper bound. */ | |
3884 | auto upper = [&] () | |
3885 | { | |
5c58de74 | 3886 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3887 | { |
e1ef7d7a PA |
3888 | /* In completion mode, we want UPPER to point past all |
3889 | symbols names that have the same prefix. I.e., with | |
3890 | these symbols, and completing "func": | |
3891 | ||
3892 | function << lower bound | |
3893 | function1 | |
3894 | other_function << upper bound | |
3895 | ||
3896 | We find the upper bound by looking for the insertion | |
3897 | point of "func"-with-last-character-incremented, | |
3898 | i.e. "fund". */ | |
3b00ef10 | 3899 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3900 | if (after.empty ()) |
3f563c84 | 3901 | return end; |
e6b2f5ef PA |
3902 | return std::lower_bound (lower, end, after.c_str (), |
3903 | lookup_compare_lower); | |
3f563c84 PA |
3904 | } |
3905 | else | |
3b00ef10 | 3906 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3907 | } (); |
3908 | ||
5c58de74 PA |
3909 | return {lower, upper}; |
3910 | } | |
3911 | ||
3912 | /* See declaration. */ | |
3913 | ||
3914 | void | |
44ed8f3e | 3915 | mapped_index_base::build_name_components () |
5c58de74 PA |
3916 | { |
3917 | if (!this->name_components.empty ()) | |
3918 | return; | |
3919 | ||
3920 | this->name_components_casing = case_sensitivity; | |
3921 | auto *name_cmp | |
3922 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3923 | ||
3924 | /* The code below only knows how to break apart components of C++ | |
3925 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3926 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3927 | auto count = this->symbol_name_count (); |
3928 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3929 | { |
44ed8f3e | 3930 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3931 | continue; |
3932 | ||
3933 | const char *name = this->symbol_name_at (idx); | |
3934 | ||
3935 | /* Add each name component to the name component table. */ | |
3936 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3937 | |
3938 | if (strstr (name, "::") != nullptr) | |
3939 | { | |
3940 | for (unsigned int current_len = cp_find_first_component (name); | |
3941 | name[current_len] != '\0'; | |
3942 | current_len += cp_find_first_component (name + current_len)) | |
3943 | { | |
3944 | gdb_assert (name[current_len] == ':'); | |
3945 | this->name_components.push_back ({previous_len, idx}); | |
3946 | /* Skip the '::'. */ | |
3947 | current_len += 2; | |
3948 | previous_len = current_len; | |
3949 | } | |
3950 | } | |
3951 | else | |
5c58de74 | 3952 | { |
3b00ef10 TT |
3953 | /* Handle the Ada encoded (aka mangled) form here. */ |
3954 | for (const char *iter = strstr (name, "__"); | |
3955 | iter != nullptr; | |
3956 | iter = strstr (iter, "__")) | |
3957 | { | |
3958 | this->name_components.push_back ({previous_len, idx}); | |
3959 | iter += 2; | |
3960 | previous_len = iter - name; | |
3961 | } | |
5c58de74 | 3962 | } |
3b00ef10 | 3963 | |
5c58de74 PA |
3964 | this->name_components.push_back ({previous_len, idx}); |
3965 | } | |
3966 | ||
3967 | /* Sort name_components elements by name. */ | |
3968 | auto name_comp_compare = [&] (const name_component &left, | |
3969 | const name_component &right) | |
3970 | { | |
3971 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3972 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3973 | ||
3974 | const char *left_name = left_qualified + left.name_offset; | |
3975 | const char *right_name = right_qualified + right.name_offset; | |
3976 | ||
3977 | return name_cmp (left_name, right_name) < 0; | |
3978 | }; | |
3979 | ||
3980 | std::sort (this->name_components.begin (), | |
3981 | this->name_components.end (), | |
3982 | name_comp_compare); | |
3983 | } | |
3984 | ||
3985 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3986 | mapped_index_base instead of the containing objfile. This is split |
3987 | to a separate function in order to be able to unit test the | |
3988 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3989 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3990 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
3991 | |
3992 | static void | |
3993 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 3994 | (mapped_index_base &index, |
5c58de74 PA |
3995 | const lookup_name_info &lookup_name_in, |
3996 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3997 | enum search_domain kind, | |
3b00ef10 | 3998 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
3999 | { |
4000 | lookup_name_info lookup_name_without_params | |
4001 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4002 | |
4003 | /* Build the symbol name component sorted vector, if we haven't | |
4004 | yet. */ | |
4005 | index.build_name_components (); | |
4006 | ||
3f563c84 PA |
4007 | /* The same symbol may appear more than once in the range though. |
4008 | E.g., if we're looking for symbols that complete "w", and we have | |
4009 | a symbol named "w1::w2", we'll find the two name components for | |
4010 | that same symbol in the range. To be sure we only call the | |
4011 | callback once per symbol, we first collect the symbol name | |
4012 | indexes that matched in a temporary vector and ignore | |
4013 | duplicates. */ | |
4014 | std::vector<offset_type> matches; | |
3f563c84 | 4015 | |
3b00ef10 TT |
4016 | struct name_and_matcher |
4017 | { | |
4018 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4019 | const char *name; |
3b00ef10 TT |
4020 | |
4021 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4022 | { |
ecc6c606 | 4023 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4024 | } |
4025 | }; | |
4026 | ||
4027 | /* A vector holding all the different symbol name matchers, for all | |
4028 | languages. */ | |
4029 | std::vector<name_and_matcher> matchers; | |
4030 | ||
4031 | for (int i = 0; i < nr_languages; i++) | |
4032 | { | |
4033 | enum language lang_e = (enum language) i; | |
4034 | ||
4035 | const language_defn *lang = language_def (lang_e); | |
4036 | symbol_name_matcher_ftype *name_matcher | |
4037 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4038 | |
3b00ef10 TT |
4039 | name_and_matcher key { |
4040 | name_matcher, | |
4041 | lookup_name_without_params.language_lookup_name (lang_e) | |
4042 | }; | |
4043 | ||
4044 | /* Don't insert the same comparison routine more than once. | |
4045 | Note that we do this linear walk. This is not a problem in | |
4046 | practice because the number of supported languages is | |
4047 | low. */ | |
4048 | if (std::find (matchers.begin (), matchers.end (), key) | |
4049 | != matchers.end ()) | |
9291a0cd | 4050 | continue; |
3b00ef10 TT |
4051 | matchers.push_back (std::move (key)); |
4052 | ||
4053 | auto bounds | |
4054 | = index.find_name_components_bounds (lookup_name_without_params, | |
4055 | lang_e); | |
4056 | ||
4057 | /* Now for each symbol name in range, check to see if we have a name | |
4058 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4059 | ||
4060 | for (; bounds.first != bounds.second; ++bounds.first) | |
4061 | { | |
4062 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4063 | ||
4064 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4065 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4066 | continue; | |
9291a0cd | 4067 | |
3b00ef10 TT |
4068 | matches.push_back (bounds.first->idx); |
4069 | } | |
3f563c84 PA |
4070 | } |
4071 | ||
4072 | std::sort (matches.begin (), matches.end ()); | |
4073 | ||
4074 | /* Finally call the callback, once per match. */ | |
4075 | ULONGEST prev = -1; | |
4076 | for (offset_type idx : matches) | |
4077 | { | |
4078 | if (prev != idx) | |
4079 | { | |
3b00ef10 TT |
4080 | if (!match_callback (idx)) |
4081 | break; | |
3f563c84 PA |
4082 | prev = idx; |
4083 | } | |
4084 | } | |
4085 | ||
4086 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4087 | (offset_type)-1 are both possible values. */ | |
4088 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4089 | } | |
4090 | ||
c62446b1 PA |
4091 | #if GDB_SELF_TEST |
4092 | ||
4093 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4094 | ||
a3c5fafd PA |
4095 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4096 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4097 | mapped_index_base interface. Builds an index from the symbol list | |
4098 | passed as parameter to the constructor. */ | |
4099 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4100 | { |
4101 | public: | |
a3c5fafd PA |
4102 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4103 | : m_symbol_table (symbols) | |
c62446b1 PA |
4104 | {} |
4105 | ||
a3c5fafd | 4106 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4107 | |
a3c5fafd | 4108 | /* Return the number of names in the symbol table. */ |
632e107b | 4109 | size_t symbol_name_count () const override |
c62446b1 | 4110 | { |
a3c5fafd | 4111 | return m_symbol_table.size (); |
c62446b1 PA |
4112 | } |
4113 | ||
a3c5fafd | 4114 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4115 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4116 | { |
4117 | return m_symbol_table[idx]; | |
4118 | } | |
c62446b1 | 4119 | |
a3c5fafd PA |
4120 | private: |
4121 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4122 | }; |
4123 | ||
4124 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4125 | string, to pass to print routines. */ | |
4126 | ||
4127 | static const char * | |
4128 | string_or_null (const char *str) | |
4129 | { | |
4130 | return str != NULL ? str : "<null>"; | |
4131 | } | |
4132 | ||
4133 | /* Check if a lookup_name_info built from | |
4134 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4135 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4136 | matching order. If no match expected, then an empty list is | |
4137 | specified. Returns true on success. On failure prints a warning | |
4138 | indicating the file:line that failed, and returns false. */ | |
4139 | ||
4140 | static bool | |
4141 | check_match (const char *file, int line, | |
4142 | mock_mapped_index &mock_index, | |
4143 | const char *name, symbol_name_match_type match_type, | |
4144 | bool completion_mode, | |
4145 | std::initializer_list<const char *> expected_list) | |
4146 | { | |
4147 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4148 | ||
4149 | bool matched = true; | |
4150 | ||
4151 | auto mismatch = [&] (const char *expected_str, | |
4152 | const char *got) | |
4153 | { | |
4154 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4155 | "expected=\"%s\", got=\"%s\"\n"), | |
4156 | file, line, | |
4157 | (match_type == symbol_name_match_type::FULL | |
4158 | ? "FULL" : "WILD"), | |
4159 | name, string_or_null (expected_str), string_or_null (got)); | |
4160 | matched = false; | |
4161 | }; | |
4162 | ||
4163 | auto expected_it = expected_list.begin (); | |
4164 | auto expected_end = expected_list.end (); | |
4165 | ||
a3c5fafd | 4166 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4167 | NULL, ALL_DOMAIN, |
4168 | [&] (offset_type idx) | |
4169 | { | |
a3c5fafd | 4170 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4171 | const char *expected_str |
4172 | = expected_it == expected_end ? NULL : *expected_it++; | |
4173 | ||
4174 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4175 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4176 | return true; |
c62446b1 PA |
4177 | }); |
4178 | ||
4179 | const char *expected_str | |
4180 | = expected_it == expected_end ? NULL : *expected_it++; | |
4181 | if (expected_str != NULL) | |
4182 | mismatch (expected_str, NULL); | |
4183 | ||
4184 | return matched; | |
4185 | } | |
4186 | ||
4187 | /* The symbols added to the mock mapped_index for testing (in | |
4188 | canonical form). */ | |
4189 | static const char *test_symbols[] = { | |
4190 | "function", | |
4191 | "std::bar", | |
4192 | "std::zfunction", | |
4193 | "std::zfunction2", | |
4194 | "w1::w2", | |
4195 | "ns::foo<char*>", | |
4196 | "ns::foo<int>", | |
4197 | "ns::foo<long>", | |
a20714ff PA |
4198 | "ns2::tmpl<int>::foo2", |
4199 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4200 | |
e1ef7d7a PA |
4201 | /* These are used to check that the increment-last-char in the |
4202 | matching algorithm for completion doesn't match "t1_fund" when | |
4203 | completing "t1_func". */ | |
4204 | "t1_func", | |
4205 | "t1_func1", | |
4206 | "t1_fund", | |
4207 | "t1_fund1", | |
4208 | ||
4209 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4210 | cp-name-parser understands this as a single identifier ("função" | |
4211 | is "function" in PT). */ | |
4212 | u8"u8função", | |
4213 | ||
4214 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4215 | "yfunc\377", | |
4216 | ||
4217 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4218 | "\377", | |
4219 | "\377\377123", | |
4220 | ||
c62446b1 PA |
4221 | /* A name with all sorts of complications. Starts with "z" to make |
4222 | it easier for the completion tests below. */ | |
4223 | #define Z_SYM_NAME \ | |
4224 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4225 | "::tuple<(anonymous namespace)::ui*, " \ | |
4226 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4227 | ||
4228 | Z_SYM_NAME | |
4229 | }; | |
4230 | ||
a3c5fafd PA |
4231 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4232 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4233 | in completion mode. */ | |
5c58de74 PA |
4234 | |
4235 | static bool | |
a3c5fafd | 4236 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4237 | const char *search_name, |
4238 | gdb::array_view<const char *> expected_syms) | |
4239 | { | |
4240 | lookup_name_info lookup_name (search_name, | |
4241 | symbol_name_match_type::FULL, true); | |
4242 | ||
3b00ef10 TT |
4243 | auto bounds = index.find_name_components_bounds (lookup_name, |
4244 | language_cplus); | |
5c58de74 PA |
4245 | |
4246 | size_t distance = std::distance (bounds.first, bounds.second); | |
4247 | if (distance != expected_syms.size ()) | |
4248 | return false; | |
4249 | ||
4250 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4251 | { | |
4252 | auto nc_elem = bounds.first + exp_elem; | |
4253 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4254 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4255 | return false; | |
4256 | } | |
4257 | ||
4258 | return true; | |
4259 | } | |
4260 | ||
4261 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4262 | method. */ | |
4263 | ||
c62446b1 | 4264 | static void |
5c58de74 PA |
4265 | test_mapped_index_find_name_component_bounds () |
4266 | { | |
4267 | mock_mapped_index mock_index (test_symbols); | |
4268 | ||
a3c5fafd | 4269 | mock_index.build_name_components (); |
5c58de74 PA |
4270 | |
4271 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4272 | method in completion mode. */ | |
4273 | { | |
4274 | static const char *expected_syms[] = { | |
4275 | "t1_func", | |
4276 | "t1_func1", | |
5c58de74 PA |
4277 | }; |
4278 | ||
a3c5fafd | 4279 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4280 | "t1_func", expected_syms)); |
4281 | } | |
4282 | ||
4283 | /* Check that the increment-last-char in the name matching algorithm | |
4284 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4285 | { | |
4286 | static const char *expected_syms1[] = { | |
4287 | "\377", | |
4288 | "\377\377123", | |
4289 | }; | |
a3c5fafd | 4290 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4291 | "\377", expected_syms1)); |
4292 | ||
4293 | static const char *expected_syms2[] = { | |
4294 | "\377\377123", | |
4295 | }; | |
a3c5fafd | 4296 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4297 | "\377\377", expected_syms2)); |
4298 | } | |
4299 | } | |
4300 | ||
4301 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4302 | ||
4303 | static void | |
4304 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4305 | { |
4306 | mock_mapped_index mock_index (test_symbols); | |
4307 | ||
4308 | /* We let all tests run until the end even if some fails, for debug | |
4309 | convenience. */ | |
4310 | bool any_mismatch = false; | |
4311 | ||
4312 | /* Create the expected symbols list (an initializer_list). Needed | |
4313 | because lists have commas, and we need to pass them to CHECK, | |
4314 | which is a macro. */ | |
4315 | #define EXPECT(...) { __VA_ARGS__ } | |
4316 | ||
4317 | /* Wrapper for check_match that passes down the current | |
4318 | __FILE__/__LINE__. */ | |
4319 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4320 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4321 | mock_index, \ | |
4322 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4323 | EXPECTED_LIST) | |
4324 | ||
4325 | /* Identity checks. */ | |
4326 | for (const char *sym : test_symbols) | |
4327 | { | |
4328 | /* Should be able to match all existing symbols. */ | |
4329 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4330 | EXPECT (sym)); | |
4331 | ||
4332 | /* Should be able to match all existing symbols with | |
4333 | parameters. */ | |
4334 | std::string with_params = std::string (sym) + "(int)"; | |
4335 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4336 | EXPECT (sym)); | |
4337 | ||
4338 | /* Should be able to match all existing symbols with | |
4339 | parameters and qualifiers. */ | |
4340 | with_params = std::string (sym) + " ( int ) const"; | |
4341 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4342 | EXPECT (sym)); | |
4343 | ||
4344 | /* This should really find sym, but cp-name-parser.y doesn't | |
4345 | know about lvalue/rvalue qualifiers yet. */ | |
4346 | with_params = std::string (sym) + " ( int ) &&"; | |
4347 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4348 | {}); | |
4349 | } | |
4350 | ||
e1ef7d7a PA |
4351 | /* Check that the name matching algorithm for completion doesn't get |
4352 | confused with Latin1 'ÿ' / 0xff. */ | |
4353 | { | |
4354 | static const char str[] = "\377"; | |
4355 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4356 | EXPECT ("\377", "\377\377123")); | |
4357 | } | |
4358 | ||
4359 | /* Check that the increment-last-char in the matching algorithm for | |
4360 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4361 | { | |
4362 | static const char str[] = "t1_func"; | |
4363 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4364 | EXPECT ("t1_func", "t1_func1")); | |
4365 | } | |
4366 | ||
c62446b1 PA |
4367 | /* Check that completion mode works at each prefix of the expected |
4368 | symbol name. */ | |
4369 | { | |
4370 | static const char str[] = "function(int)"; | |
4371 | size_t len = strlen (str); | |
4372 | std::string lookup; | |
4373 | ||
4374 | for (size_t i = 1; i < len; i++) | |
4375 | { | |
4376 | lookup.assign (str, i); | |
4377 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4378 | EXPECT ("function")); | |
4379 | } | |
4380 | } | |
4381 | ||
4382 | /* While "w" is a prefix of both components, the match function | |
4383 | should still only be called once. */ | |
4384 | { | |
4385 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4386 | EXPECT ("w1::w2")); | |
a20714ff PA |
4387 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4388 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4389 | } |
4390 | ||
4391 | /* Same, with a "complicated" symbol. */ | |
4392 | { | |
4393 | static const char str[] = Z_SYM_NAME; | |
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 (Z_SYM_NAME)); | |
4402 | } | |
4403 | } | |
4404 | ||
4405 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4406 | { | |
4407 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4408 | {}); | |
4409 | } | |
4410 | ||
4411 | /* A complete symbol with parameters matches any overload, since the | |
4412 | index has no overload info. */ | |
4413 | { | |
4414 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4415 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4416 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4417 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4418 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4419 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4420 | } |
4421 | ||
4422 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4423 | template argument list. */ | |
4424 | { | |
4425 | static const char expected[] = "ns::foo<int>"; | |
4426 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4427 | EXPECT (expected)); | |
a20714ff PA |
4428 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4429 | EXPECT (expected)); | |
c62446b1 PA |
4430 | } |
4431 | ||
4432 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4433 | template argument list that includes a pointer. */ | |
4434 | { | |
4435 | static const char expected[] = "ns::foo<char*>"; | |
4436 | /* Try both completion and non-completion modes. */ | |
4437 | static const bool completion_mode[2] = {false, true}; | |
4438 | for (size_t i = 0; i < 2; i++) | |
4439 | { | |
4440 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4441 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4442 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4443 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4444 | |
4445 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4446 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4447 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4448 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4449 | } |
4450 | } | |
4451 | ||
4452 | { | |
4453 | /* Check method qualifiers are ignored. */ | |
4454 | static const char expected[] = "ns::foo<char*>"; | |
4455 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4456 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4457 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4458 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4459 | CHECK_MATCH ("foo < char * > ( int ) const", |
4460 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4461 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4462 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4463 | } |
4464 | ||
4465 | /* Test lookup names that don't match anything. */ | |
4466 | { | |
a20714ff PA |
4467 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4468 | {}); | |
4469 | ||
c62446b1 PA |
4470 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4471 | {}); | |
4472 | } | |
4473 | ||
a20714ff PA |
4474 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4475 | which should not be confused with a parameter list. */ | |
4476 | { | |
4477 | static const char *syms[] = { | |
4478 | "A::B::C", | |
4479 | "B::C", | |
4480 | "C", | |
4481 | "A :: B :: C ( int )", | |
4482 | "B :: C ( int )", | |
4483 | "C ( int )", | |
4484 | }; | |
4485 | ||
4486 | for (const char *s : syms) | |
4487 | { | |
4488 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4489 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4490 | } | |
4491 | } | |
4492 | ||
4493 | { | |
4494 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4495 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4496 | EXPECT (expected)); | |
4497 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4498 | EXPECT (expected)); | |
4499 | } | |
4500 | ||
c62446b1 PA |
4501 | SELF_CHECK (!any_mismatch); |
4502 | ||
4503 | #undef EXPECT | |
4504 | #undef CHECK_MATCH | |
4505 | } | |
4506 | ||
5c58de74 PA |
4507 | static void |
4508 | run_test () | |
4509 | { | |
4510 | test_mapped_index_find_name_component_bounds (); | |
4511 | test_dw2_expand_symtabs_matching_symbol (); | |
4512 | } | |
4513 | ||
c62446b1 PA |
4514 | }} // namespace selftests::dw2_expand_symtabs_matching |
4515 | ||
4516 | #endif /* GDB_SELF_TEST */ | |
4517 | ||
4b514bc8 JK |
4518 | /* If FILE_MATCHER is NULL or if PER_CU has |
4519 | dwarf2_per_cu_quick_data::MARK set (see | |
4520 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4521 | EXPANSION_NOTIFY on it. */ | |
4522 | ||
4523 | static void | |
4524 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4525 | (dwarf2_per_cu_data *per_cu, |
4526 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4527 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4528 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4529 | { | |
4530 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4531 | { | |
af758d11 | 4532 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4533 | |
97a1449a SM |
4534 | compunit_symtab *symtab |
4535 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4536 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4537 | |
af758d11 SM |
4538 | if (expansion_notify != NULL && symtab_was_null) |
4539 | expansion_notify (symtab); | |
4b514bc8 JK |
4540 | } |
4541 | } | |
4542 | ||
3f563c84 PA |
4543 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4544 | matched, to expand corresponding CUs that were marked. IDX is the | |
4545 | index of the symbol name that matched. */ | |
4546 | ||
4547 | static void | |
4548 | dw2_expand_marked_cus | |
97a1449a | 4549 | (dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4550 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4551 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4552 | search_domain kind) | |
4553 | { | |
3f563c84 PA |
4554 | offset_type *vec, vec_len, vec_idx; |
4555 | bool global_seen = false; | |
5989a64e | 4556 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
3f563c84 | 4557 | |
61920122 | 4558 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4559 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4560 | vec_len = MAYBE_SWAP (vec[0]); |
4561 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4562 | { | |
61920122 PA |
4563 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4564 | /* This value is only valid for index versions >= 7. */ | |
4565 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4566 | gdb_index_symbol_kind symbol_kind = | |
4567 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4568 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4569 | /* Only check the symbol attributes if they're present. | |
4570 | Indices prior to version 7 don't record them, | |
4571 | and indices >= 7 may elide them for certain symbols | |
4572 | (gold does this). */ | |
4573 | int attrs_valid = | |
4574 | (index.version >= 7 | |
4575 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4576 | ||
4577 | /* Work around gold/15646. */ | |
4578 | if (attrs_valid) | |
9291a0cd | 4579 | { |
61920122 PA |
4580 | if (!is_static && global_seen) |
4581 | continue; | |
4582 | if (!is_static) | |
4583 | global_seen = true; | |
4584 | } | |
3190f0c6 | 4585 | |
61920122 PA |
4586 | /* Only check the symbol's kind if it has one. */ |
4587 | if (attrs_valid) | |
4588 | { | |
4589 | switch (kind) | |
8943b874 | 4590 | { |
61920122 PA |
4591 | case VARIABLES_DOMAIN: |
4592 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4593 | continue; | |
4594 | break; | |
4595 | case FUNCTIONS_DOMAIN: | |
4596 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4597 | continue; |
61920122 PA |
4598 | break; |
4599 | case TYPES_DOMAIN: | |
4600 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4601 | continue; | |
4602 | break; | |
59c35742 AB |
4603 | case MODULES_DOMAIN: |
4604 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4605 | continue; | |
4606 | break; | |
61920122 PA |
4607 | default: |
4608 | break; | |
8943b874 | 4609 | } |
61920122 | 4610 | } |
8943b874 | 4611 | |
61920122 | 4612 | /* Don't crash on bad data. */ |
5989a64e SM |
4613 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
4614 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4615 | { |
b98664d3 | 4616 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4617 | " [in module %s]"), |
4618 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4619 | continue; |
4620 | } | |
4621 | ||
5989a64e | 4622 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
97a1449a | 4623 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, file_matcher, |
4b514bc8 | 4624 | expansion_notify); |
61920122 PA |
4625 | } |
4626 | } | |
4627 | ||
4b514bc8 JK |
4628 | /* If FILE_MATCHER is non-NULL, set all the |
4629 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4630 | that match FILE_MATCHER. */ | |
4631 | ||
61920122 | 4632 | static void |
4b514bc8 | 4633 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4634 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4635 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4636 | { |
4b514bc8 | 4637 | if (file_matcher == NULL) |
61920122 PA |
4638 | return; |
4639 | ||
4b514bc8 JK |
4640 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4641 | htab_eq_pointer, | |
4642 | NULL, xcalloc, xfree)); | |
4643 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4644 | htab_eq_pointer, |
4645 | NULL, xcalloc, xfree)); | |
61920122 | 4646 | |
4b514bc8 JK |
4647 | /* The rule is CUs specify all the files, including those used by |
4648 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4649 | |
5989a64e | 4650 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4651 | { |
927aa2e7 JK |
4652 | QUIT; |
4653 | ||
4654 | per_cu->v.quick->mark = 0; | |
4655 | ||
4656 | /* We only need to look at symtabs not already expanded. */ | |
af758d11 | 4657 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4658 | continue; |
4659 | ||
ab432490 SM |
4660 | quick_file_names *file_data |
4661 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
927aa2e7 JK |
4662 | if (file_data == NULL) |
4663 | continue; | |
4664 | ||
4665 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4666 | continue; | |
4667 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4668 | { | |
4669 | per_cu->v.quick->mark = 1; | |
4670 | continue; | |
4671 | } | |
4672 | ||
b76e467d | 4673 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4674 | { |
4675 | const char *this_real_name; | |
4676 | ||
4677 | if (file_matcher (file_data->file_names[j], false)) | |
4678 | { | |
4679 | per_cu->v.quick->mark = 1; | |
4680 | break; | |
4681 | } | |
4682 | ||
4683 | /* Before we invoke realpath, which can get expensive when many | |
4684 | files are involved, do a quick comparison of the basenames. */ | |
4685 | if (!basenames_may_differ | |
4686 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4687 | true)) | |
4688 | continue; | |
4689 | ||
45940949 TT |
4690 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
4691 | file_data, j); | |
927aa2e7 JK |
4692 | if (file_matcher (this_real_name, false)) |
4693 | { | |
4694 | per_cu->v.quick->mark = 1; | |
4695 | break; | |
4696 | } | |
4697 | } | |
4698 | ||
b76e467d SM |
4699 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4700 | ? visited_found.get () | |
4701 | : visited_not_found.get (), | |
4702 | file_data, INSERT); | |
927aa2e7 JK |
4703 | *slot = file_data; |
4704 | } | |
4705 | } | |
4706 | ||
4707 | static void | |
4708 | dw2_expand_symtabs_matching | |
4709 | (struct objfile *objfile, | |
4710 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4711 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4712 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4713 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4714 | enum search_domain kind) | |
4715 | { | |
ed2dc618 SM |
4716 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4717 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4718 | |
4719 | /* index_table is NULL if OBJF_READNOW. */ | |
5989a64e | 4720 | if (!dwarf2_per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4721 | return; |
4722 | ||
ed2dc618 | 4723 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 | 4724 | |
c1a66c06 TV |
4725 | if (symbol_matcher == NULL && lookup_name == NULL) |
4726 | { | |
5989a64e | 4727 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4728 | { |
4729 | QUIT; | |
4730 | ||
97a1449a SM |
4731 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
4732 | file_matcher, expansion_notify); | |
c1a66c06 TV |
4733 | } |
4734 | return; | |
4735 | } | |
4736 | ||
5989a64e | 4737 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
927aa2e7 | 4738 | |
c1a66c06 | 4739 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4740 | symbol_matcher, |
4741 | kind, [&] (offset_type idx) | |
4742 | { | |
ed2dc618 | 4743 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4744 | expansion_notify, kind); |
3b00ef10 | 4745 | return true; |
927aa2e7 JK |
4746 | }); |
4747 | } | |
4748 | ||
4749 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4750 | symtab. */ | |
4751 | ||
4752 | static struct compunit_symtab * | |
4753 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4754 | CORE_ADDR pc) | |
4755 | { | |
4756 | int i; | |
4757 | ||
4758 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4759 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4760 | return cust; | |
4761 | ||
4762 | if (cust->includes == NULL) | |
4763 | return NULL; | |
4764 | ||
4765 | for (i = 0; cust->includes[i]; ++i) | |
4766 | { | |
4767 | struct compunit_symtab *s = cust->includes[i]; | |
4768 | ||
4769 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4770 | if (s != NULL) | |
4771 | return s; | |
4772 | } | |
4773 | ||
4774 | return NULL; | |
4775 | } | |
4776 | ||
4777 | static struct compunit_symtab * | |
4778 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4779 | struct bound_minimal_symbol msymbol, | |
4780 | CORE_ADDR pc, | |
4781 | struct obj_section *section, | |
4782 | int warn_if_readin) | |
4783 | { | |
4784 | struct dwarf2_per_cu_data *data; | |
4785 | struct compunit_symtab *result; | |
4786 | ||
d320c2b5 | 4787 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4788 | return NULL; |
4789 | ||
b3b3bada | 4790 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4791 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4792 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4793 | if (!data) |
4794 | return NULL; | |
4795 | ||
af758d11 SM |
4796 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4797 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4798 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4799 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4800 | |
97a1449a SM |
4801 | result = recursively_find_pc_sect_compunit_symtab |
4802 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4803 | ||
927aa2e7 JK |
4804 | gdb_assert (result != NULL); |
4805 | return result; | |
4806 | } | |
4807 | ||
4808 | static void | |
4809 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4810 | void *data, int need_fullname) | |
4811 | { | |
ed2dc618 SM |
4812 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4813 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 | 4814 | |
5989a64e | 4815 | if (!dwarf2_per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4816 | { |
5989a64e | 4817 | dwarf2_per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4818 | |
4819 | htab_up visited (htab_create_alloc (10, | |
4820 | htab_hash_pointer, htab_eq_pointer, | |
4821 | NULL, xcalloc, xfree)); | |
4822 | ||
4823 | /* The rule is CUs specify all the files, including those used | |
4824 | by any TU, so there's no need to scan TUs here. We can | |
4825 | ignore file names coming from already-expanded CUs. */ | |
4826 | ||
5989a64e | 4827 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4828 | { |
af758d11 | 4829 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4830 | { |
4831 | void **slot = htab_find_slot (visited.get (), | |
4832 | per_cu->v.quick->file_names, | |
4833 | INSERT); | |
4834 | ||
4835 | *slot = per_cu->v.quick->file_names; | |
4836 | } | |
4837 | } | |
4838 | ||
5989a64e | 4839 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4840 | { |
927aa2e7 | 4841 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 4842 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4843 | continue; |
4844 | ||
ab432490 SM |
4845 | quick_file_names *file_data |
4846 | = dw2_get_file_names (per_cu, dwarf2_per_objfile); | |
927aa2e7 JK |
4847 | if (file_data == NULL) |
4848 | continue; | |
4849 | ||
b76e467d | 4850 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4851 | if (*slot) |
4852 | { | |
4853 | /* Already visited. */ | |
4854 | continue; | |
4855 | } | |
4856 | *slot = file_data; | |
4857 | ||
4858 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4859 | { | |
4860 | const char *filename = file_data->file_names[j]; | |
5989a64e | 4861 | dwarf2_per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4862 | } |
4863 | } | |
4864 | } | |
4865 | ||
5989a64e | 4866 | dwarf2_per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4867 | { |
4868 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4869 | ||
4870 | if (need_fullname) | |
4871 | this_real_name = gdb_realpath (filename); | |
4872 | (*fun) (filename, this_real_name.get (), data); | |
4873 | }); | |
4874 | } | |
4875 | ||
4876 | static int | |
4877 | dw2_has_symbols (struct objfile *objfile) | |
4878 | { | |
4879 | return 1; | |
4880 | } | |
4881 | ||
4882 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4883 | { | |
4884 | dw2_has_symbols, | |
4885 | dw2_find_last_source_symtab, | |
4886 | dw2_forget_cached_source_info, | |
4887 | dw2_map_symtabs_matching_filename, | |
4888 | dw2_lookup_symbol, | |
d3214198 | 4889 | NULL, |
927aa2e7 JK |
4890 | dw2_print_stats, |
4891 | dw2_dump, | |
927aa2e7 JK |
4892 | dw2_expand_symtabs_for_function, |
4893 | dw2_expand_all_symtabs, | |
4894 | dw2_expand_symtabs_with_fullname, | |
4895 | dw2_map_matching_symbols, | |
4896 | dw2_expand_symtabs_matching, | |
4897 | dw2_find_pc_sect_compunit_symtab, | |
4898 | NULL, | |
4899 | dw2_map_symbol_filenames | |
4900 | }; | |
4901 | ||
4902 | /* DWARF-5 debug_names reader. */ | |
4903 | ||
4904 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4905 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4906 | ||
4907 | /* A helper function that reads the .debug_names section in SECTION | |
4908 | and fills in MAP. FILENAME is the name of the file containing the | |
4909 | section; it is used for error reporting. | |
4910 | ||
4911 | Returns true if all went well, false otherwise. */ | |
4912 | ||
4913 | static bool | |
4914 | read_debug_names_from_section (struct objfile *objfile, | |
4915 | const char *filename, | |
4916 | struct dwarf2_section_info *section, | |
4917 | mapped_debug_names &map) | |
4918 | { | |
96b79293 | 4919 | if (section->empty ()) |
927aa2e7 JK |
4920 | return false; |
4921 | ||
4922 | /* Older elfutils strip versions could keep the section in the main | |
4923 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4924 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4925 | return false; |
4926 | ||
96b79293 | 4927 | section->read (objfile); |
927aa2e7 | 4928 | |
08feed99 | 4929 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4930 | |
4931 | const gdb_byte *addr = section->buffer; | |
4932 | ||
96b79293 | 4933 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4934 | |
4935 | unsigned int bytes_read; | |
4936 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4937 | addr += bytes_read; | |
4938 | ||
4939 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4940 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4941 | if (bytes_read + length != section->size) | |
4942 | { | |
4943 | /* There may be multiple per-CU indices. */ | |
4944 | warning (_("Section .debug_names in %s length %s does not match " | |
4945 | "section length %s, ignoring .debug_names."), | |
4946 | filename, plongest (bytes_read + length), | |
4947 | pulongest (section->size)); | |
4948 | return false; | |
4949 | } | |
4950 | ||
4951 | /* The version number. */ | |
4952 | uint16_t version = read_2_bytes (abfd, addr); | |
4953 | addr += 2; | |
4954 | if (version != 5) | |
4955 | { | |
4956 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4957 | "ignoring .debug_names."), | |
4958 | filename, version); | |
4959 | return false; | |
4960 | } | |
4961 | ||
4962 | /* Padding. */ | |
4963 | uint16_t padding = read_2_bytes (abfd, addr); | |
4964 | addr += 2; | |
4965 | if (padding != 0) | |
4966 | { | |
4967 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4968 | "ignoring .debug_names."), | |
4969 | filename, padding); | |
4970 | return false; | |
4971 | } | |
4972 | ||
4973 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4974 | map.cu_count = read_4_bytes (abfd, addr); | |
4975 | addr += 4; | |
4976 | ||
4977 | /* local_type_unit_count - The number of TUs in the local TU | |
4978 | list. */ | |
4979 | map.tu_count = read_4_bytes (abfd, addr); | |
4980 | addr += 4; | |
4981 | ||
4982 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4983 | list. */ | |
4984 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4985 | addr += 4; | |
4986 | if (foreign_tu_count != 0) | |
4987 | { | |
4988 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4989 | "ignoring .debug_names."), | |
4990 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4991 | return false; | |
4992 | } | |
4993 | ||
4994 | /* bucket_count - The number of hash buckets in the hash lookup | |
4995 | table. */ | |
4996 | map.bucket_count = read_4_bytes (abfd, addr); | |
4997 | addr += 4; | |
4998 | ||
4999 | /* name_count - The number of unique names in the index. */ | |
5000 | map.name_count = read_4_bytes (abfd, addr); | |
5001 | addr += 4; | |
5002 | ||
5003 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5004 | table. */ | |
5005 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5006 | addr += 4; | |
5007 | ||
5008 | /* augmentation_string_size - The size in bytes of the augmentation | |
5009 | string. This value is rounded up to a multiple of 4. */ | |
5010 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5011 | addr += 4; | |
5012 | map.augmentation_is_gdb = ((augmentation_string_size | |
5013 | == sizeof (dwarf5_augmentation)) | |
5014 | && memcmp (addr, dwarf5_augmentation, | |
5015 | sizeof (dwarf5_augmentation)) == 0); | |
5016 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5017 | addr += augmentation_string_size; | |
5018 | ||
5019 | /* List of CUs */ | |
5020 | map.cu_table_reordered = addr; | |
5021 | addr += map.cu_count * map.offset_size; | |
5022 | ||
5023 | /* List of Local TUs */ | |
5024 | map.tu_table_reordered = addr; | |
5025 | addr += map.tu_count * map.offset_size; | |
5026 | ||
5027 | /* Hash Lookup Table */ | |
5028 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5029 | addr += map.bucket_count * 4; | |
5030 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5031 | addr += map.name_count * 4; | |
5032 | ||
5033 | /* Name Table */ | |
5034 | map.name_table_string_offs_reordered = addr; | |
5035 | addr += map.name_count * map.offset_size; | |
5036 | map.name_table_entry_offs_reordered = addr; | |
5037 | addr += map.name_count * map.offset_size; | |
5038 | ||
5039 | const gdb_byte *abbrev_table_start = addr; | |
5040 | for (;;) | |
5041 | { | |
927aa2e7 JK |
5042 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5043 | addr += bytes_read; | |
5044 | if (index_num == 0) | |
5045 | break; | |
5046 | ||
5047 | const auto insertpair | |
5048 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5049 | if (!insertpair.second) | |
5050 | { | |
5051 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5052 | "ignoring .debug_names."), | |
5053 | filename, pulongest (index_num)); | |
5054 | return false; | |
5055 | } | |
5056 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5057 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5058 | addr += bytes_read; | |
5059 | ||
5060 | for (;;) | |
5061 | { | |
5062 | mapped_debug_names::index_val::attr attr; | |
5063 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5064 | addr += bytes_read; | |
5065 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5066 | addr += bytes_read; | |
5067 | if (attr.form == DW_FORM_implicit_const) | |
5068 | { | |
5069 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5070 | &bytes_read); | |
5071 | addr += bytes_read; | |
5072 | } | |
5073 | if (attr.dw_idx == 0 && attr.form == 0) | |
5074 | break; | |
5075 | indexval.attr_vec.push_back (std::move (attr)); | |
5076 | } | |
5077 | } | |
5078 | if (addr != abbrev_table_start + abbrev_table_size) | |
5079 | { | |
5080 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5081 | "of size %s vs. written as %u, ignoring .debug_names."), |
5082 | filename, plongest (addr - abbrev_table_start), | |
5083 | abbrev_table_size); | |
927aa2e7 JK |
5084 | return false; |
5085 | } | |
5086 | map.entry_pool = addr; | |
5087 | ||
5088 | return true; | |
5089 | } | |
5090 | ||
5091 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5092 | list. */ | |
5093 | ||
5094 | static void | |
168c9250 | 5095 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5096 | const mapped_debug_names &map, |
5097 | dwarf2_section_info §ion, | |
b76e467d | 5098 | bool is_dwz) |
927aa2e7 | 5099 | { |
3ee6bb11 TV |
5100 | if (!map.augmentation_is_gdb) |
5101 | { | |
5102 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5103 | { | |
5104 | sect_offset sect_off | |
5105 | = (sect_offset) (extract_unsigned_integer | |
5106 | (map.cu_table_reordered + i * map.offset_size, | |
5107 | map.offset_size, | |
5108 | map.dwarf5_byte_order)); | |
5109 | /* We don't know the length of the CU, because the CU list in a | |
5110 | .debug_names index can be incomplete, so we can't use the start of | |
5111 | the next CU as end of this CU. We create the CUs here with length 0, | |
5112 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5113 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5114 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5115 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5116 | } |
5117 | } | |
5118 | ||
927aa2e7 JK |
5119 | sect_offset sect_off_prev; |
5120 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5121 | { | |
5122 | sect_offset sect_off_next; | |
5123 | if (i < map.cu_count) | |
5124 | { | |
5125 | sect_off_next | |
5126 | = (sect_offset) (extract_unsigned_integer | |
5127 | (map.cu_table_reordered + i * map.offset_size, | |
5128 | map.offset_size, | |
5129 | map.dwarf5_byte_order)); | |
5130 | } | |
5131 | else | |
5132 | sect_off_next = (sect_offset) section.size; | |
5133 | if (i >= 1) | |
5134 | { | |
5135 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5136 | dwarf2_per_cu_data *per_cu |
168c9250 | 5137 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5138 | sect_off_prev, length); |
168c9250 | 5139 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5140 | } |
5141 | sect_off_prev = sect_off_next; | |
5142 | } | |
5143 | } | |
5144 | ||
5145 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5146 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5147 | |
5148 | static void | |
168c9250 | 5149 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5150 | const mapped_debug_names &map, |
5151 | const mapped_debug_names &dwz_map) | |
5152 | { | |
168c9250 SM |
5153 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5154 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5155 | |
168c9250 | 5156 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5157 | false /* is_dwz */); |
927aa2e7 JK |
5158 | |
5159 | if (dwz_map.cu_count == 0) | |
5160 | return; | |
5161 | ||
168c9250 SM |
5162 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5163 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5164 | true /* is_dwz */); |
927aa2e7 JK |
5165 | } |
5166 | ||
5167 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5168 | elements of all the CUs and return true. Otherwise, return false. */ | |
5169 | ||
5170 | static bool | |
ed2dc618 | 5171 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5172 | { |
22ca247e TT |
5173 | std::unique_ptr<mapped_debug_names> map |
5174 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5175 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5176 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5177 | |
5178 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5989a64e | 5179 | &dwarf2_per_objfile->per_bfd->debug_names, |
22ca247e | 5180 | *map)) |
927aa2e7 JK |
5181 | return false; |
5182 | ||
5183 | /* Don't use the index if it's empty. */ | |
22ca247e | 5184 | if (map->name_count == 0) |
927aa2e7 JK |
5185 | return false; |
5186 | ||
5187 | /* If there is a .dwz file, read it so we can get its CU list as | |
5188 | well. */ | |
c3699833 | 5189 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
927aa2e7 JK |
5190 | if (dwz != NULL) |
5191 | { | |
5192 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5193 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5194 | &dwz->debug_names, dwz_map)) |
5195 | { | |
5196 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5197 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5198 | return false; |
5199 | } | |
5200 | } | |
5201 | ||
168c9250 | 5202 | create_cus_from_debug_names (dwarf2_per_objfile->per_bfd, *map, dwz_map); |
927aa2e7 | 5203 | |
22ca247e | 5204 | if (map->tu_count != 0) |
927aa2e7 JK |
5205 | { |
5206 | /* We can only handle a single .debug_types when we have an | |
5207 | index. */ | |
5989a64e | 5208 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
927aa2e7 JK |
5209 | return false; |
5210 | ||
5989a64e | 5211 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
927aa2e7 JK |
5212 | |
5213 | create_signatured_type_table_from_debug_names | |
5989a64e | 5214 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->per_bfd->abbrev); |
927aa2e7 JK |
5215 | } |
5216 | ||
ed2dc618 | 5217 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5989a64e | 5218 | &dwarf2_per_objfile->per_bfd->debug_aranges); |
927aa2e7 | 5219 | |
5989a64e SM |
5220 | dwarf2_per_objfile->per_bfd->debug_names_table = std::move (map); |
5221 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
5222 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
5223 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
927aa2e7 JK |
5224 | |
5225 | return true; | |
5226 | } | |
5227 | ||
927aa2e7 JK |
5228 | /* Type used to manage iterating over all CUs looking for a symbol for |
5229 | .debug_names. */ | |
5230 | ||
5231 | class dw2_debug_names_iterator | |
5232 | { | |
5233 | public: | |
927aa2e7 | 5234 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5235 | gdb::optional<block_enum> block_index, |
5236 | domain_enum domain, | |
927aa2e7 | 5237 | const char *name) |
2b79f376 | 5238 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5239 | m_addr (find_vec_in_debug_names (map, name)) |
5240 | {} | |
5241 | ||
5242 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5243 | search_domain search, uint32_t namei) | |
5244 | : m_map (map), | |
5245 | m_search (search), | |
5246 | m_addr (find_vec_in_debug_names (map, namei)) | |
5247 | {} | |
5248 | ||
3b00ef10 TT |
5249 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5250 | block_enum block_index, domain_enum domain, | |
5251 | uint32_t namei) | |
5252 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5253 | m_addr (find_vec_in_debug_names (map, namei)) | |
5254 | {} | |
5255 | ||
927aa2e7 JK |
5256 | /* Return the next matching CU or NULL if there are no more. */ |
5257 | dwarf2_per_cu_data *next (); | |
5258 | ||
5259 | private: | |
5260 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5261 | const char *name); | |
5262 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5263 | uint32_t namei); | |
5264 | ||
5265 | /* The internalized form of .debug_names. */ | |
5266 | const mapped_debug_names &m_map; | |
5267 | ||
2b79f376 SM |
5268 | /* If set, only look for symbols that match that block. Valid values are |
5269 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5270 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5271 | |
5272 | /* The kind of symbol we're looking for. */ | |
5273 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5274 | const search_domain m_search = ALL_DOMAIN; | |
5275 | ||
5276 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5277 | not found. */ | |
5278 | const gdb_byte *m_addr; | |
5279 | }; | |
5280 | ||
5281 | const char * | |
5282 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5283 | { | |
5284 | const ULONGEST namei_string_offs | |
5285 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5286 | + namei * offset_size), | |
5287 | offset_size, | |
5288 | dwarf5_byte_order); | |
4f44ae6c TT |
5289 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5290 | namei_string_offs); | |
927aa2e7 JK |
5291 | } |
5292 | ||
5293 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5294 | found, return pointer to its pool data. If NAME cannot be found, | |
5295 | return NULL. */ | |
5296 | ||
5297 | const gdb_byte * | |
5298 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5299 | (const mapped_debug_names &map, const char *name) | |
5300 | { | |
5301 | int (*cmp) (const char *, const char *); | |
5302 | ||
54ee4252 | 5303 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5304 | if (current_language->la_language == language_cplus |
5305 | || current_language->la_language == language_fortran | |
5306 | || current_language->la_language == language_d) | |
5307 | { | |
5308 | /* NAME is already canonical. Drop any qualifiers as | |
5309 | .debug_names does not contain any. */ | |
5310 | ||
5311 | if (strchr (name, '(') != NULL) | |
5312 | { | |
54ee4252 | 5313 | without_params = cp_remove_params (name); |
927aa2e7 | 5314 | if (without_params != NULL) |
54ee4252 | 5315 | name = without_params.get (); |
927aa2e7 JK |
5316 | } |
5317 | } | |
5318 | ||
5319 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5320 | ||
5321 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5322 | uint32_t namei | |
5323 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5324 | (map.bucket_table_reordered | |
5325 | + (full_hash % map.bucket_count)), 4, | |
5326 | map.dwarf5_byte_order); | |
5327 | if (namei == 0) | |
5328 | return NULL; | |
5329 | --namei; | |
5330 | if (namei >= map.name_count) | |
5331 | { | |
b98664d3 | 5332 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5333 | "[in module %s]"), |
5334 | namei, map.name_count, | |
ed2dc618 | 5335 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5336 | return NULL; |
5337 | } | |
5338 | ||
5339 | for (;;) | |
5340 | { | |
5341 | const uint32_t namei_full_hash | |
5342 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5343 | (map.hash_table_reordered + namei), 4, | |
5344 | map.dwarf5_byte_order); | |
5345 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5346 | return NULL; | |
5347 | ||
5348 | if (full_hash == namei_full_hash) | |
5349 | { | |
5350 | const char *const namei_string = map.namei_to_name (namei); | |
5351 | ||
5352 | #if 0 /* An expensive sanity check. */ | |
5353 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5354 | { | |
b98664d3 | 5355 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5356 | "[in module %s]"), |
5357 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5358 | return NULL; | |
5359 | } | |
5360 | #endif | |
5361 | ||
5362 | if (cmp (namei_string, name) == 0) | |
5363 | { | |
5364 | const ULONGEST namei_entry_offs | |
5365 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5366 | + namei * map.offset_size), | |
5367 | map.offset_size, map.dwarf5_byte_order); | |
5368 | return map.entry_pool + namei_entry_offs; | |
5369 | } | |
5370 | } | |
5371 | ||
5372 | ++namei; | |
5373 | if (namei >= map.name_count) | |
5374 | return NULL; | |
5375 | } | |
5376 | } | |
5377 | ||
5378 | const gdb_byte * | |
5379 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5380 | (const mapped_debug_names &map, uint32_t namei) | |
5381 | { | |
5382 | if (namei >= map.name_count) | |
5383 | { | |
b98664d3 | 5384 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5385 | "[in module %s]"), |
5386 | namei, map.name_count, | |
ed2dc618 | 5387 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5388 | return NULL; |
5389 | } | |
5390 | ||
5391 | const ULONGEST namei_entry_offs | |
5392 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5393 | + namei * map.offset_size), | |
5394 | map.offset_size, map.dwarf5_byte_order); | |
5395 | return map.entry_pool + namei_entry_offs; | |
5396 | } | |
5397 | ||
5398 | /* See dw2_debug_names_iterator. */ | |
5399 | ||
5400 | dwarf2_per_cu_data * | |
5401 | dw2_debug_names_iterator::next () | |
5402 | { | |
5403 | if (m_addr == NULL) | |
5404 | return NULL; | |
5405 | ||
ed2dc618 SM |
5406 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5407 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5408 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5409 | |
5410 | again: | |
5411 | ||
5412 | unsigned int bytes_read; | |
5413 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5414 | m_addr += bytes_read; | |
5415 | if (abbrev == 0) | |
5416 | return NULL; | |
5417 | ||
5418 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5419 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5420 | { | |
b98664d3 | 5421 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5422 | "[in module %s]"), |
ed2dc618 | 5423 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5424 | return NULL; |
5425 | } | |
5426 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5427 | enum class symbol_linkage { |
5428 | unknown, | |
5429 | static_, | |
5430 | extern_, | |
23c13d42 | 5431 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5432 | dwarf2_per_cu_data *per_cu = NULL; |
5433 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5434 | { | |
5435 | ULONGEST ull; | |
5436 | switch (attr.form) | |
5437 | { | |
5438 | case DW_FORM_implicit_const: | |
5439 | ull = attr.implicit_const; | |
5440 | break; | |
5441 | case DW_FORM_flag_present: | |
5442 | ull = 1; | |
5443 | break; | |
5444 | case DW_FORM_udata: | |
5445 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5446 | m_addr += bytes_read; | |
5447 | break; | |
6dc55ce9 | 5448 | case DW_FORM_ref4: |
5449 | ull = read_4_bytes (abfd, m_addr); | |
5450 | m_addr += 4; | |
5451 | break; | |
5452 | case DW_FORM_ref8: | |
5453 | ull = read_8_bytes (abfd, m_addr); | |
5454 | m_addr += 8; | |
5455 | break; | |
5456 | case DW_FORM_ref_sig8: | |
5457 | ull = read_8_bytes (abfd, m_addr); | |
5458 | m_addr += 8; | |
5459 | break; | |
927aa2e7 | 5460 | default: |
b98664d3 | 5461 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5462 | dwarf_form_name (attr.form), |
ed2dc618 | 5463 | objfile_name (objfile)); |
927aa2e7 JK |
5464 | return NULL; |
5465 | } | |
5466 | switch (attr.dw_idx) | |
5467 | { | |
5468 | case DW_IDX_compile_unit: | |
5469 | /* Don't crash on bad data. */ | |
5989a64e | 5470 | if (ull >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5471 | { |
b98664d3 | 5472 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5473 | " [in module %s]"), |
5474 | pulongest (ull), | |
5475 | objfile_name (dwarf2_per_objfile->objfile)); | |
5476 | continue; | |
5477 | } | |
5989a64e | 5478 | per_cu = dwarf2_per_objfile->per_bfd->get_cutu (ull); |
927aa2e7 | 5479 | break; |
8af5c486 JK |
5480 | case DW_IDX_type_unit: |
5481 | /* Don't crash on bad data. */ | |
5989a64e | 5482 | if (ull >= dwarf2_per_objfile->per_bfd->all_type_units.size ()) |
8af5c486 | 5483 | { |
b98664d3 | 5484 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5485 | " [in module %s]"), |
5486 | pulongest (ull), | |
5487 | objfile_name (dwarf2_per_objfile->objfile)); | |
5488 | continue; | |
5489 | } | |
5989a64e | 5490 | per_cu = &dwarf2_per_objfile->per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5491 | break; |
6dc55ce9 | 5492 | case DW_IDX_die_offset: |
5493 | /* In a per-CU index (as opposed to a per-module index), index | |
5494 | entries without CU attribute implicitly refer to the single CU. */ | |
5495 | if (per_cu == NULL) | |
5989a64e | 5496 | per_cu = dwarf2_per_objfile->per_bfd->get_cu (0); |
6dc55ce9 | 5497 | break; |
927aa2e7 JK |
5498 | case DW_IDX_GNU_internal: |
5499 | if (!m_map.augmentation_is_gdb) | |
5500 | break; | |
23c13d42 | 5501 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5502 | break; |
5503 | case DW_IDX_GNU_external: | |
5504 | if (!m_map.augmentation_is_gdb) | |
5505 | break; | |
23c13d42 | 5506 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5507 | break; |
5508 | } | |
5509 | } | |
5510 | ||
5511 | /* Skip if already read in. */ | |
af758d11 | 5512 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5513 | goto again; |
5514 | ||
5515 | /* Check static vs global. */ | |
23c13d42 | 5516 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5517 | { |
2b79f376 | 5518 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5519 | const bool symbol_is_static = |
5520 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5521 | if (want_static != symbol_is_static) |
2b79f376 | 5522 | goto again; |
927aa2e7 JK |
5523 | } |
5524 | ||
5525 | /* Match dw2_symtab_iter_next, symbol_kind | |
5526 | and debug_names::psymbol_tag. */ | |
5527 | switch (m_domain) | |
5528 | { | |
5529 | case VAR_DOMAIN: | |
5530 | switch (indexval.dwarf_tag) | |
5531 | { | |
5532 | case DW_TAG_variable: | |
5533 | case DW_TAG_subprogram: | |
5534 | /* Some types are also in VAR_DOMAIN. */ | |
5535 | case DW_TAG_typedef: | |
5536 | case DW_TAG_structure_type: | |
5537 | break; | |
5538 | default: | |
5539 | goto again; | |
5540 | } | |
5541 | break; | |
5542 | case STRUCT_DOMAIN: | |
5543 | switch (indexval.dwarf_tag) | |
5544 | { | |
5545 | case DW_TAG_typedef: | |
5546 | case DW_TAG_structure_type: | |
5547 | break; | |
5548 | default: | |
5549 | goto again; | |
5550 | } | |
5551 | break; | |
5552 | case LABEL_DOMAIN: | |
5553 | switch (indexval.dwarf_tag) | |
5554 | { | |
5555 | case 0: | |
5556 | case DW_TAG_variable: | |
5557 | break; | |
5558 | default: | |
5559 | goto again; | |
5560 | } | |
5561 | break; | |
59c35742 AB |
5562 | case MODULE_DOMAIN: |
5563 | switch (indexval.dwarf_tag) | |
5564 | { | |
5565 | case DW_TAG_module: | |
5566 | break; | |
5567 | default: | |
5568 | goto again; | |
5569 | } | |
5570 | break; | |
927aa2e7 JK |
5571 | default: |
5572 | break; | |
5573 | } | |
5574 | ||
5575 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5576 | debug_names::psymbol_tag. */ | |
5577 | switch (m_search) | |
4b514bc8 | 5578 | { |
927aa2e7 JK |
5579 | case VARIABLES_DOMAIN: |
5580 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5581 | { |
927aa2e7 JK |
5582 | case DW_TAG_variable: |
5583 | break; | |
5584 | default: | |
5585 | goto again; | |
4b514bc8 | 5586 | } |
927aa2e7 JK |
5587 | break; |
5588 | case FUNCTIONS_DOMAIN: | |
5589 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5590 | { |
927aa2e7 JK |
5591 | case DW_TAG_subprogram: |
5592 | break; | |
5593 | default: | |
5594 | goto again; | |
4b514bc8 | 5595 | } |
927aa2e7 JK |
5596 | break; |
5597 | case TYPES_DOMAIN: | |
5598 | switch (indexval.dwarf_tag) | |
5599 | { | |
5600 | case DW_TAG_typedef: | |
5601 | case DW_TAG_structure_type: | |
5602 | break; | |
5603 | default: | |
5604 | goto again; | |
5605 | } | |
5606 | break; | |
59c35742 AB |
5607 | case MODULES_DOMAIN: |
5608 | switch (indexval.dwarf_tag) | |
5609 | { | |
5610 | case DW_TAG_module: | |
5611 | break; | |
5612 | default: | |
5613 | goto again; | |
5614 | } | |
927aa2e7 JK |
5615 | default: |
5616 | break; | |
4b514bc8 | 5617 | } |
927aa2e7 JK |
5618 | |
5619 | return per_cu; | |
4b514bc8 | 5620 | } |
61920122 | 5621 | |
927aa2e7 | 5622 | static struct compunit_symtab * |
c7f839cb | 5623 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5624 | const char *name, domain_enum domain) |
4b514bc8 | 5625 | { |
ed2dc618 SM |
5626 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5627 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5628 | |
5989a64e | 5629 | const auto &mapp = dwarf2_per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5630 | if (!mapp) |
61920122 | 5631 | { |
927aa2e7 JK |
5632 | /* index is NULL if OBJF_READNOW. */ |
5633 | return NULL; | |
5634 | } | |
5635 | const auto &map = *mapp; | |
9291a0cd | 5636 | |
2b79f376 | 5637 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5638 | |
927aa2e7 JK |
5639 | struct compunit_symtab *stab_best = NULL; |
5640 | struct dwarf2_per_cu_data *per_cu; | |
5641 | while ((per_cu = iter.next ()) != NULL) | |
5642 | { | |
5643 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
5644 | compunit_symtab *stab |
5645 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
927aa2e7 | 5646 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5647 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5648 | |
927aa2e7 JK |
5649 | sym = block_find_symbol (block, name, domain, |
5650 | block_find_non_opaque_type_preferred, | |
5651 | &with_opaque); | |
9703b513 | 5652 | |
927aa2e7 JK |
5653 | /* Some caution must be observed with overloaded functions and |
5654 | methods, since the index will not contain any overload | |
5655 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5656 | |
927aa2e7 | 5657 | if (sym != NULL |
987012b8 | 5658 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5659 | return stab; |
5660 | if (with_opaque != NULL | |
987012b8 | 5661 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5662 | stab_best = stab; |
9703b513 | 5663 | |
927aa2e7 | 5664 | /* Keep looking through other CUs. */ |
9703b513 TT |
5665 | } |
5666 | ||
927aa2e7 | 5667 | return stab_best; |
9703b513 TT |
5668 | } |
5669 | ||
927aa2e7 JK |
5670 | /* This dumps minimal information about .debug_names. It is called |
5671 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5672 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5673 | |
927aa2e7 JK |
5674 | static void |
5675 | dw2_debug_names_dump (struct objfile *objfile) | |
5676 | { | |
ed2dc618 SM |
5677 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5678 | = get_dwarf2_per_objfile (objfile); | |
5679 | ||
5989a64e | 5680 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
927aa2e7 | 5681 | printf_filtered (".debug_names:"); |
5989a64e | 5682 | if (dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5683 | printf_filtered (" exists\n"); |
5684 | else | |
5685 | printf_filtered (" faked for \"readnow\"\n"); | |
5686 | printf_filtered ("\n"); | |
9291a0cd TT |
5687 | } |
5688 | ||
9291a0cd | 5689 | static void |
927aa2e7 JK |
5690 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5691 | const char *func_name) | |
9291a0cd | 5692 | { |
ed2dc618 SM |
5693 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5694 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5695 | |
5989a64e SM |
5696 | /* dwarf2_per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5697 | if (dwarf2_per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5698 | { |
5989a64e | 5699 | const mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
24c79950 | 5700 | |
2b79f376 | 5701 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5702 | |
927aa2e7 JK |
5703 | struct dwarf2_per_cu_data *per_cu; |
5704 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a | 5705 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
927aa2e7 JK |
5706 | } |
5707 | } | |
24c79950 | 5708 | |
3b00ef10 TT |
5709 | static void |
5710 | dw2_debug_names_map_matching_symbols | |
5711 | (struct objfile *objfile, | |
5712 | const lookup_name_info &name, domain_enum domain, | |
5713 | int global, | |
5714 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5715 | symbol_compare_ftype *ordered_compare) | |
5716 | { | |
5717 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5718 | = get_dwarf2_per_objfile (objfile); | |
5719 | ||
5720 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5989a64e | 5721 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5722 | return; |
5723 | ||
5989a64e | 5724 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5725 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5726 | ||
5727 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5728 | auto matcher = [&] (const char *symname) | |
5729 | { | |
5730 | if (ordered_compare == nullptr) | |
5731 | return true; | |
5732 | return ordered_compare (symname, match_name) == 0; | |
5733 | }; | |
5734 | ||
5735 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5736 | [&] (offset_type namei) | |
5737 | { | |
5738 | /* The name was matched, now expand corresponding CUs that were | |
5739 | marked. */ | |
5740 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5741 | ||
5742 | struct dwarf2_per_cu_data *per_cu; | |
5743 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5744 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
5745 | nullptr); | |
3b00ef10 TT |
5746 | return true; |
5747 | }); | |
5748 | ||
5749 | /* It's a shame we couldn't do this inside the | |
5750 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5751 | that have already been expanded. Instead, this loop matches what | |
5752 | the psymtab code does. */ | |
5989a64e | 5753 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5754 | { |
af758d11 SM |
5755 | compunit_symtab *symtab = dwarf2_per_objfile->get_symtab (per_cu); |
5756 | if (symtab != nullptr) | |
3b00ef10 TT |
5757 | { |
5758 | const struct block *block | |
af758d11 | 5759 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5760 | if (!iterate_over_symbols_terminated (block, name, |
5761 | domain, callback)) | |
5762 | break; | |
5763 | } | |
5764 | } | |
5765 | } | |
5766 | ||
927aa2e7 JK |
5767 | static void |
5768 | dw2_debug_names_expand_symtabs_matching | |
5769 | (struct objfile *objfile, | |
5770 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5771 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5772 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5773 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5774 | enum search_domain kind) | |
5775 | { | |
ed2dc618 SM |
5776 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5777 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5778 | |
927aa2e7 | 5779 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5989a64e | 5780 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5781 | return; |
9291a0cd | 5782 | |
ed2dc618 | 5783 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5784 | |
c1a66c06 TV |
5785 | if (symbol_matcher == NULL && lookup_name == NULL) |
5786 | { | |
5989a64e | 5787 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5788 | { |
5789 | QUIT; | |
5790 | ||
97a1449a SM |
5791 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5792 | file_matcher, expansion_notify); | |
c1a66c06 TV |
5793 | } |
5794 | return; | |
5795 | } | |
5796 | ||
5989a64e | 5797 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5798 | |
c1a66c06 | 5799 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5800 | symbol_matcher, |
5801 | kind, [&] (offset_type namei) | |
927aa2e7 | 5802 | { |
927aa2e7 JK |
5803 | /* The name was matched, now expand corresponding CUs that were |
5804 | marked. */ | |
5805 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5806 | |
927aa2e7 JK |
5807 | struct dwarf2_per_cu_data *per_cu; |
5808 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5809 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5810 | file_matcher, expansion_notify); | |
3b00ef10 | 5811 | return true; |
44ed8f3e | 5812 | }); |
9291a0cd TT |
5813 | } |
5814 | ||
927aa2e7 | 5815 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5816 | { |
5817 | dw2_has_symbols, | |
5818 | dw2_find_last_source_symtab, | |
5819 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5820 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5821 | dw2_debug_names_lookup_symbol, |
d3214198 | 5822 | NULL, |
9291a0cd | 5823 | dw2_print_stats, |
927aa2e7 | 5824 | dw2_debug_names_dump, |
927aa2e7 | 5825 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5826 | dw2_expand_all_symtabs, |
652a8996 | 5827 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5828 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5829 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5830 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5831 | NULL, |
9291a0cd TT |
5832 | dw2_map_symbol_filenames |
5833 | }; | |
5834 | ||
4485a1c1 | 5835 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5836 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5837 | |
5838 | template <typename T> | |
5839 | static gdb::array_view<const gdb_byte> | |
5840 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5841 | { | |
5842 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5843 | ||
96b79293 | 5844 | if (section->empty ()) |
4485a1c1 SM |
5845 | return {}; |
5846 | ||
5847 | /* Older elfutils strip versions could keep the section in the main | |
5848 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5849 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5850 | return {}; |
5851 | ||
96b79293 | 5852 | section->read (obj); |
4485a1c1 | 5853 | |
8bebfcda PA |
5854 | /* dwarf2_section_info::size is a bfd_size_type, while |
5855 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5856 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5857 | is 32-bit. So we need an explicit narrowing conversion here. | |
5858 | This is fine, because it's impossible to allocate or mmap an | |
5859 | array/buffer larger than what size_t can represent. */ | |
5860 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5861 | } |
5862 | ||
87d6a7aa SM |
5863 | /* Lookup the index cache for the contents of the index associated to |
5864 | DWARF2_OBJ. */ | |
5865 | ||
5866 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5867 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5868 | { |
5869 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5870 | if (build_id == nullptr) | |
5871 | return {}; | |
5872 | ||
5873 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5874 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5875 | } |
5876 | ||
5877 | /* Same as the above, but for DWZ. */ | |
5878 | ||
5879 | static gdb::array_view<const gdb_byte> | |
5880 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5881 | { | |
5882 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5883 | if (build_id == nullptr) | |
5884 | return {}; | |
5885 | ||
5886 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5887 | } | |
5888 | ||
3c0aa29a | 5889 | /* See symfile.h. */ |
9291a0cd | 5890 | |
3c0aa29a PA |
5891 | bool |
5892 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5893 | { |
ed2dc618 SM |
5894 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5895 | = get_dwarf2_per_objfile (objfile); | |
5896 | ||
9291a0cd TT |
5897 | /* If we're about to read full symbols, don't bother with the |
5898 | indices. In this case we also don't care if some other debug | |
5899 | format is making psymtabs, because they are all about to be | |
5900 | expanded anyway. */ | |
5901 | if ((objfile->flags & OBJF_READNOW)) | |
5902 | { | |
5989a64e | 5903 | dwarf2_per_objfile->per_bfd->using_index = 1; |
ed2dc618 SM |
5904 | create_all_comp_units (dwarf2_per_objfile); |
5905 | create_all_type_units (dwarf2_per_objfile); | |
5989a64e | 5906 | dwarf2_per_objfile->per_bfd->quick_file_names_table |
b76e467d | 5907 | = create_quick_file_names_table |
5989a64e | 5908 | (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); |
af758d11 | 5909 | dwarf2_per_objfile->resize_symtabs (); |
9291a0cd | 5910 | |
5989a64e SM |
5911 | for (int i = 0; i < (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
5912 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5913 | { |
5989a64e | 5914 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 5915 | |
5989a64e | 5916 | per_cu->v.quick = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
e254ef6a | 5917 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5918 | } |
5919 | ||
5920 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5921 | these functions will be no-ops because we will have expanded | |
5922 | all symtabs. */ | |
3c0aa29a PA |
5923 | *index_kind = dw_index_kind::GDB_INDEX; |
5924 | return true; | |
9291a0cd TT |
5925 | } |
5926 | ||
ed2dc618 | 5927 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5928 | { |
5929 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
af758d11 | 5930 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
5931 | return true; |
5932 | } | |
927aa2e7 | 5933 | |
4485a1c1 | 5934 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5989a64e | 5935 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 5936 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
5937 | { |
5938 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 5939 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
5940 | return true; |
5941 | } | |
9291a0cd | 5942 | |
87d6a7aa SM |
5943 | /* ... otherwise, try to find the index in the index cache. */ |
5944 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5945 | get_gdb_index_contents_from_cache, | |
5946 | get_gdb_index_contents_from_cache_dwz)) | |
5947 | { | |
5948 | global_index_cache.hit (); | |
5949 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 5950 | dwarf2_per_objfile->resize_symtabs (); |
87d6a7aa SM |
5951 | return true; |
5952 | } | |
5953 | ||
5954 | global_index_cache.miss (); | |
3c0aa29a | 5955 | return false; |
9291a0cd TT |
5956 | } |
5957 | ||
5958 | \f | |
5959 | ||
dce234bc PP |
5960 | /* Build a partial symbol table. */ |
5961 | ||
5962 | void | |
f29dff0a | 5963 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5964 | { |
ed2dc618 SM |
5965 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5966 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5967 | |
6eee24ce | 5968 | init_psymbol_list (objfile, 1024); |
c906108c | 5969 | |
a70b8144 | 5970 | try |
c9bf0622 TT |
5971 | { |
5972 | /* This isn't really ideal: all the data we allocate on the | |
5973 | objfile's obstack is still uselessly kept around. However, | |
5974 | freeing it seems unsafe. */ | |
906768f9 | 5975 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5976 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5977 | psymtabs.keep (); |
87d6a7aa | 5978 | |
af758d11 SM |
5979 | dwarf2_per_objfile->resize_symtabs (); |
5980 | ||
87d6a7aa SM |
5981 | /* (maybe) store an index in the cache. */ |
5982 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5983 | } |
230d2906 | 5984 | catch (const gdb_exception_error &except) |
492d29ea PA |
5985 | { |
5986 | exception_print (gdb_stderr, except); | |
5987 | } | |
c906108c | 5988 | } |
c906108c | 5989 | |
3b80fe9b DE |
5990 | /* Find the base address of the compilation unit for range lists and |
5991 | location lists. It will normally be specified by DW_AT_low_pc. | |
5992 | In DWARF-3 draft 4, the base address could be overridden by | |
5993 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5994 | compilation units with discontinuous ranges. */ | |
5995 | ||
5996 | static void | |
5997 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5998 | { | |
5999 | struct attribute *attr; | |
6000 | ||
2b24b6e4 | 6001 | cu->base_address.reset (); |
3b80fe9b DE |
6002 | |
6003 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6004 | if (attr != nullptr) |
2b24b6e4 | 6005 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6006 | else |
6007 | { | |
6008 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6009 | if (attr != nullptr) |
2b24b6e4 | 6010 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6011 | } |
6012 | } | |
6013 | ||
36586728 TT |
6014 | /* Helper function that returns the proper abbrev section for |
6015 | THIS_CU. */ | |
6016 | ||
6017 | static struct dwarf2_section_info * | |
6018 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6019 | { | |
6020 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6021 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6022 | |
6023 | if (this_cu->is_dwz) | |
c3699833 | 6024 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6025 | else |
c3699833 | 6026 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6027 | |
6028 | return abbrev; | |
6029 | } | |
6030 | ||
f4dc4d17 DE |
6031 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6032 | ||
6033 | static sect_offset | |
ed2dc618 SM |
6034 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6035 | struct dwarf2_section_info *section, | |
9c541725 | 6036 | sect_offset sect_off) |
f4dc4d17 | 6037 | { |
96b79293 | 6038 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6039 | const gdb_byte *info_ptr; |
ac298888 | 6040 | unsigned int initial_length_size, offset_size; |
43988095 | 6041 | uint16_t version; |
f4dc4d17 | 6042 | |
96b79293 | 6043 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 6044 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6045 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6046 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6047 | info_ptr += initial_length_size; |
6048 | ||
6049 | version = read_2_bytes (abfd, info_ptr); | |
6050 | info_ptr += 2; | |
6051 | if (version >= 5) | |
6052 | { | |
6053 | /* Skip unit type and address size. */ | |
6054 | info_ptr += 2; | |
6055 | } | |
6056 | ||
24aa364d | 6057 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6058 | } |
6059 | ||
b83470bf TT |
6060 | /* A partial symtab that is used only for include files. */ |
6061 | struct dwarf2_include_psymtab : public partial_symtab | |
6062 | { | |
6063 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6064 | : partial_symtab (filename, objfile) | |
6065 | { | |
6066 | } | |
6067 | ||
6068 | void read_symtab (struct objfile *objfile) override | |
6069 | { | |
194d088f TV |
6070 | /* It's an include file, no symbols to read for it. |
6071 | Everything is in the includer symtab. */ | |
6072 | ||
6073 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6074 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6075 | model the includer. But if we go the regular route of calling | |
6076 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6077 | to expand the includer, we'll only use expand_psymtab on the includer | |
6078 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6079 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6080 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6081 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6082 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6083 | } |
6084 | ||
6085 | void expand_psymtab (struct objfile *objfile) override | |
6086 | { | |
194d088f TV |
6087 | /* This is not called by read_symtab, and should not be called by any |
6088 | expand_dependencies. */ | |
6089 | gdb_assert (false); | |
b83470bf TT |
6090 | } |
6091 | ||
5717c425 | 6092 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6093 | { |
5717c425 | 6094 | return includer ()->readin_p (objfile); |
b83470bf TT |
6095 | } |
6096 | ||
5717c425 | 6097 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6098 | { |
6099 | return nullptr; | |
6100 | } | |
6101 | ||
6102 | private: | |
194d088f TV |
6103 | partial_symtab *includer () const |
6104 | { | |
6105 | /* An include psymtab has exactly one dependency: the psymtab that | |
6106 | includes it. */ | |
6107 | gdb_assert (this->number_of_dependencies == 1); | |
6108 | return this->dependencies[0]; | |
6109 | } | |
b83470bf TT |
6110 | }; |
6111 | ||
aaa75496 JB |
6112 | /* Allocate a new partial symtab for file named NAME and mark this new |
6113 | partial symtab as being an include of PST. */ | |
6114 | ||
6115 | static void | |
891813be | 6116 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6117 | struct objfile *objfile) |
6118 | { | |
b83470bf | 6119 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6120 | |
fbd9ab74 | 6121 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6122 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6123 | |
a9342b62 | 6124 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6125 | subpst->dependencies[0] = pst; |
6126 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6127 | } |
6128 | ||
6129 | /* Read the Line Number Program data and extract the list of files | |
6130 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6131 | partial symtab for each of these included files. */ |
aaa75496 JB |
6132 | |
6133 | static void | |
6134 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6135 | struct die_info *die, |
891813be | 6136 | dwarf2_psymtab *pst) |
aaa75496 | 6137 | { |
fff8551c | 6138 | line_header_up lh; |
d85a05f0 | 6139 | struct attribute *attr; |
aaa75496 | 6140 | |
d85a05f0 | 6141 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6142 | if (attr != nullptr) |
9c541725 | 6143 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6144 | if (lh == NULL) |
6145 | return; /* No linetable, so no includes. */ | |
6146 | ||
79748972 TT |
6147 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6148 | that we pass in the raw text_low here; that is ok because we're | |
6149 | only decoding the line table to make include partial symtabs, and | |
6150 | so the addresses aren't really used. */ | |
4ae976d1 | 6151 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6152 | pst->raw_text_low (), 1); |
aaa75496 JB |
6153 | } |
6154 | ||
348e048f | 6155 | static hashval_t |
52dc124a | 6156 | hash_signatured_type (const void *item) |
348e048f | 6157 | { |
9a3c8263 SM |
6158 | const struct signatured_type *sig_type |
6159 | = (const struct signatured_type *) item; | |
9a619af0 | 6160 | |
348e048f | 6161 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6162 | return sig_type->signature; |
348e048f DE |
6163 | } |
6164 | ||
6165 | static int | |
52dc124a | 6166 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6167 | { |
9a3c8263 SM |
6168 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6169 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6170 | |
348e048f DE |
6171 | return lhs->signature == rhs->signature; |
6172 | } | |
6173 | ||
1fd400ff TT |
6174 | /* Allocate a hash table for signatured types. */ |
6175 | ||
b0b6a987 | 6176 | static htab_up |
298e9637 | 6177 | allocate_signatured_type_table () |
1fd400ff | 6178 | { |
b0b6a987 TT |
6179 | return htab_up (htab_create_alloc (41, |
6180 | hash_signatured_type, | |
6181 | eq_signatured_type, | |
6182 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6183 | } |
6184 | ||
d467dd73 | 6185 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6186 | |
6187 | static int | |
d467dd73 | 6188 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6189 | { |
9a3c8263 | 6190 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6191 | std::vector<signatured_type *> *all_type_units |
6192 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6193 | |
b2bdb8cf | 6194 | all_type_units->push_back (sigt); |
1fd400ff TT |
6195 | |
6196 | return 1; | |
6197 | } | |
6198 | ||
78d4d2c5 | 6199 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6200 | and fill them into TYPES_HTAB. It will process only type units, |
6201 | therefore DW_UT_type. */ | |
c88ee1f0 | 6202 | |
78d4d2c5 | 6203 | static void |
ed2dc618 SM |
6204 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6205 | struct dwo_file *dwo_file, | |
b0b6a987 | 6206 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6207 | rcuh_kind section_kind) |
348e048f | 6208 | { |
3019eac3 | 6209 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6210 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6211 | bfd *abfd; |
6212 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6213 | |
4bdcc0c1 DE |
6214 | abbrev_section = (dwo_file != NULL |
6215 | ? &dwo_file->sections.abbrev | |
5989a64e | 6216 | : &dwarf2_per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6217 | |
b4f54984 | 6218 | if (dwarf_read_debug) |
43988095 | 6219 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6220 | section->get_name (), |
6221 | abbrev_section->get_file_name ()); | |
09406207 | 6222 | |
96b79293 | 6223 | section->read (objfile); |
78d4d2c5 | 6224 | info_ptr = section->buffer; |
348e048f | 6225 | |
78d4d2c5 JK |
6226 | if (info_ptr == NULL) |
6227 | return; | |
348e048f | 6228 | |
78d4d2c5 JK |
6229 | /* We can't set abfd until now because the section may be empty or |
6230 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6231 | abfd = section->get_bfd_owner (); |
348e048f | 6232 | |
c0ab21c2 TT |
6233 | /* We don't use cutu_reader here because we don't need to read |
6234 | any dies: the signature is in the header. */ | |
3019eac3 | 6235 | |
78d4d2c5 JK |
6236 | end_ptr = info_ptr + section->size; |
6237 | while (info_ptr < end_ptr) | |
6238 | { | |
78d4d2c5 JK |
6239 | struct signatured_type *sig_type; |
6240 | struct dwo_unit *dwo_tu; | |
6241 | void **slot; | |
6242 | const gdb_byte *ptr = info_ptr; | |
6243 | struct comp_unit_head header; | |
6244 | unsigned int length; | |
8b70b953 | 6245 | |
9c541725 | 6246 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6247 | |
a49dd8dd JK |
6248 | /* Initialize it due to a false compiler warning. */ |
6249 | header.signature = -1; | |
9c541725 | 6250 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6251 | |
78d4d2c5 JK |
6252 | /* We need to read the type's signature in order to build the hash |
6253 | table, but we don't need anything else just yet. */ | |
348e048f | 6254 | |
ed2dc618 | 6255 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6256 | abbrev_section, ptr, section_kind); |
348e048f | 6257 | |
4057dfde | 6258 | length = header.get_length (); |
6caca83c | 6259 | |
78d4d2c5 JK |
6260 | /* Skip dummy type units. */ |
6261 | if (ptr >= info_ptr + length | |
43988095 JK |
6262 | || peek_abbrev_code (abfd, ptr) == 0 |
6263 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6264 | { |
6265 | info_ptr += length; | |
6266 | continue; | |
6267 | } | |
dee91e82 | 6268 | |
78d4d2c5 JK |
6269 | if (types_htab == NULL) |
6270 | { | |
6271 | if (dwo_file) | |
298e9637 | 6272 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6273 | else |
298e9637 | 6274 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6275 | } |
8b70b953 | 6276 | |
78d4d2c5 JK |
6277 | if (dwo_file) |
6278 | { | |
6279 | sig_type = NULL; | |
5989a64e | 6280 | dwo_tu = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
78d4d2c5 JK |
6281 | struct dwo_unit); |
6282 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6283 | dwo_tu->signature = header.signature; |
9c541725 | 6284 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6285 | dwo_tu->section = section; |
9c541725 | 6286 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6287 | dwo_tu->length = length; |
6288 | } | |
6289 | else | |
6290 | { | |
6291 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6292 | The real type_offset is in the DWO file. */ | |
6293 | dwo_tu = NULL; | |
5989a64e | 6294 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6295 | sig_type->signature = header.signature; |
9c541725 | 6296 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6297 | sig_type->per_cu.is_debug_types = 1; |
6298 | sig_type->per_cu.section = section; | |
9c541725 | 6299 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6300 | sig_type->per_cu.length = length; |
6301 | } | |
6302 | ||
b0b6a987 | 6303 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6304 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6305 | INSERT); | |
6306 | gdb_assert (slot != NULL); | |
6307 | if (*slot != NULL) | |
6308 | { | |
9c541725 | 6309 | sect_offset dup_sect_off; |
0349ea22 | 6310 | |
3019eac3 DE |
6311 | if (dwo_file) |
6312 | { | |
78d4d2c5 JK |
6313 | const struct dwo_unit *dup_tu |
6314 | = (const struct dwo_unit *) *slot; | |
6315 | ||
9c541725 | 6316 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6317 | } |
6318 | else | |
6319 | { | |
78d4d2c5 JK |
6320 | const struct signatured_type *dup_tu |
6321 | = (const struct signatured_type *) *slot; | |
6322 | ||
9c541725 | 6323 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6324 | } |
8b70b953 | 6325 | |
b98664d3 | 6326 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6327 | " the entry at offset %s, signature %s"), |
6328 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6329 | hex_string (header.signature)); |
78d4d2c5 JK |
6330 | } |
6331 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6332 | |
78d4d2c5 | 6333 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6334 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6335 | sect_offset_str (sect_off), | |
43988095 | 6336 | hex_string (header.signature)); |
3019eac3 | 6337 | |
78d4d2c5 JK |
6338 | info_ptr += length; |
6339 | } | |
6340 | } | |
3019eac3 | 6341 | |
78d4d2c5 JK |
6342 | /* Create the hash table of all entries in the .debug_types |
6343 | (or .debug_types.dwo) section(s). | |
6344 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6345 | otherwise it is NULL. | |
b3c8eb43 | 6346 | |
78d4d2c5 | 6347 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6348 | |
78d4d2c5 | 6349 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6350 | |
78d4d2c5 | 6351 | static void |
ed2dc618 SM |
6352 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6353 | struct dwo_file *dwo_file, | |
fd5866f6 | 6354 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6355 | htab_up &types_htab) |
78d4d2c5 | 6356 | { |
fd5866f6 SM |
6357 | for (dwarf2_section_info §ion : type_sections) |
6358 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6359 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6360 | } |
6361 | ||
6362 | /* Create the hash table of all entries in the .debug_types section, | |
6363 | and initialize all_type_units. | |
6364 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6365 | otherwise non-zero. */ | |
6366 | ||
6367 | static int | |
ed2dc618 | 6368 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6369 | { |
b0b6a987 | 6370 | htab_up types_htab; |
3019eac3 | 6371 | |
ed2dc618 | 6372 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6373 | &dwarf2_per_objfile->per_bfd->info, types_htab, |
43988095 | 6374 | rcuh_kind::COMPILE); |
ed2dc618 | 6375 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6376 | dwarf2_per_objfile->per_bfd->types, types_htab); |
3019eac3 DE |
6377 | if (types_htab == NULL) |
6378 | { | |
5989a64e | 6379 | dwarf2_per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6380 | return 0; |
6381 | } | |
6382 | ||
5989a64e | 6383 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6384 | |
5989a64e SM |
6385 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
6386 | dwarf2_per_objfile->per_bfd->all_type_units.reserve | |
6387 | (htab_elements (dwarf2_per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6388 | |
5989a64e | 6389 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6390 | add_signatured_type_cu_to_table, |
5989a64e | 6391 | &dwarf2_per_objfile->per_bfd->all_type_units); |
1fd400ff | 6392 | |
348e048f DE |
6393 | return 1; |
6394 | } | |
6395 | ||
5989a64e | 6396 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6397 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6398 | Otherwise we find one. */ | |
6399 | ||
6400 | static struct signatured_type * | |
ed2dc618 SM |
6401 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6402 | void **slot) | |
6aa5f3a6 | 6403 | { |
5989a64e SM |
6404 | if (dwarf2_per_objfile->per_bfd->all_type_units.size () |
6405 | == dwarf2_per_objfile->per_bfd->all_type_units.capacity ()) | |
6406 | ++dwarf2_per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6407 | |
5989a64e | 6408 | signatured_type *sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6409 | |
af758d11 SM |
6410 | dwarf2_per_objfile->resize_symtabs (); |
6411 | ||
5989a64e | 6412 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6413 | sig_type->signature = sig; |
6414 | sig_type->per_cu.is_debug_types = 1; | |
5989a64e | 6415 | if (dwarf2_per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6416 | { |
6417 | sig_type->per_cu.v.quick = | |
5989a64e | 6418 | OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6419 | struct dwarf2_per_cu_quick_data); |
6420 | } | |
6421 | ||
6422 | if (slot == NULL) | |
6423 | { | |
5989a64e | 6424 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6425 | sig_type, INSERT); |
6426 | } | |
6427 | gdb_assert (*slot == NULL); | |
6428 | *slot = sig_type; | |
6429 | /* The rest of sig_type must be filled in by the caller. */ | |
6430 | return sig_type; | |
6431 | } | |
6432 | ||
a2ce51a0 DE |
6433 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6434 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6435 | ||
6436 | static void | |
ed2dc618 | 6437 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6438 | struct signatured_type *sig_entry, |
6439 | struct dwo_unit *dwo_entry) | |
6440 | { | |
1859c670 SM |
6441 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
6442 | ||
7ee85ab1 | 6443 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6444 | gdb_assert (! sig_entry->per_cu.queued); |
7188ed02 | 6445 | gdb_assert (dwarf2_per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6446 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6447 | { |
6448 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
af758d11 | 6449 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6450 | } |
6451 | else | |
6452 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6453 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6454 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6455 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6456 | gdb_assert (sig_entry->dwo_unit == NULL); |
6457 | ||
6458 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6459 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6460 | sig_entry->per_cu.length = dwo_entry->length; |
6461 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6462 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6463 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6464 | sig_entry->dwo_unit = dwo_entry; | |
6465 | } | |
6466 | ||
6467 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6468 | If we haven't read the TU yet, create the signatured_type data structure |
6469 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6470 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6471 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6472 | containing that CU. Otherwise we could end up reading several other DWO | |
6473 | files (due to comdat folding) to process the transitive closure of all the | |
6474 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6475 | type signature that it needs. | |
a2ce51a0 DE |
6476 | We only do this for .gdb_index because in the psymtab case we already have |
6477 | to read all the DWOs to build the type unit groups. */ | |
6478 | ||
6479 | static struct signatured_type * | |
6480 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6481 | { | |
5e22e966 | 6482 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6483 | struct dwo_file *dwo_file; |
6484 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6485 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6486 | void **slot; |
a2ce51a0 | 6487 | |
5989a64e | 6488 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 | 6489 | |
6aa5f3a6 DE |
6490 | /* If TU skeletons have been removed then we may not have read in any |
6491 | TUs yet. */ | |
5989a64e SM |
6492 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6493 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6494 | |
6495 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6496 | Use the global signatured_types array to do our own comdat-folding |
6497 | of types. If this is the first time we're reading this TU, and | |
6498 | the TU has an entry in .gdb_index, replace the recorded data from | |
6499 | .gdb_index with this TU. */ | |
a2ce51a0 | 6500 | |
a2ce51a0 | 6501 | find_sig_entry.signature = sig; |
5989a64e | 6502 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6503 | &find_sig_entry, INSERT); |
9a3c8263 | 6504 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6505 | |
6506 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6507 | read. Don't reassign the global entry to point to this DWO if that's |
6508 | the case. Also note that if the TU is already being read, it may not | |
6509 | have come from a DWO, the program may be a mix of Fission-compiled | |
6510 | code and non-Fission-compiled code. */ | |
6511 | ||
6512 | /* Have we already tried to read this TU? | |
6513 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6514 | needn't exist in the global table yet). */ | |
6515 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6516 | return sig_entry; |
6517 | ||
6aa5f3a6 DE |
6518 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6519 | dwo_unit of the TU itself. */ | |
6520 | dwo_file = cu->dwo_unit->dwo_file; | |
6521 | ||
a2ce51a0 DE |
6522 | /* Ok, this is the first time we're reading this TU. */ |
6523 | if (dwo_file->tus == NULL) | |
6524 | return NULL; | |
6525 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6526 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6527 | &find_dwo_entry); | |
a2ce51a0 DE |
6528 | if (dwo_entry == NULL) |
6529 | return NULL; | |
6530 | ||
6aa5f3a6 DE |
6531 | /* If the global table doesn't have an entry for this TU, add one. */ |
6532 | if (sig_entry == NULL) | |
ed2dc618 | 6533 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6534 | |
ed2dc618 | 6535 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6536 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6537 | return sig_entry; |
6538 | } | |
6539 | ||
a2ce51a0 DE |
6540 | /* Subroutine of lookup_signatured_type. |
6541 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6542 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6543 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6544 | |
6545 | static struct signatured_type * | |
6546 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6547 | { | |
5e22e966 | 6548 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6549 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6550 | struct dwo_unit *dwo_entry; |
6551 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6552 | void **slot; |
a2ce51a0 | 6553 | |
5989a64e | 6554 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6555 | gdb_assert (dwp_file != NULL); |
6556 | ||
6aa5f3a6 DE |
6557 | /* If TU skeletons have been removed then we may not have read in any |
6558 | TUs yet. */ | |
5989a64e SM |
6559 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6560 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6561 | |
6aa5f3a6 | 6562 | find_sig_entry.signature = sig; |
5989a64e | 6563 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6564 | &find_sig_entry, INSERT); |
9a3c8263 | 6565 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6566 | |
6567 | /* Have we already tried to read this TU? | |
6568 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6569 | needn't exist in the global table yet). */ | |
6570 | if (sig_entry != NULL) | |
6571 | return sig_entry; | |
6572 | ||
a2ce51a0 DE |
6573 | if (dwp_file->tus == NULL) |
6574 | return NULL; | |
ed2dc618 | 6575 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6576 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6577 | if (dwo_entry == NULL) |
6578 | return NULL; | |
6579 | ||
ed2dc618 SM |
6580 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6581 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6582 | |
a2ce51a0 DE |
6583 | return sig_entry; |
6584 | } | |
6585 | ||
380bca97 | 6586 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6587 | Returns NULL if signature SIG is not present in the table. |
6588 | It is up to the caller to complain about this. */ | |
348e048f DE |
6589 | |
6590 | static struct signatured_type * | |
a2ce51a0 | 6591 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6592 | { |
5e22e966 | 6593 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6594 | |
a2ce51a0 | 6595 | if (cu->dwo_unit |
5989a64e | 6596 | && dwarf2_per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6597 | { |
6598 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6599 | These cases require special processing. */ | |
ed2dc618 | 6600 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6601 | return lookup_dwo_signatured_type (cu, sig); |
6602 | else | |
6603 | return lookup_dwp_signatured_type (cu, sig); | |
6604 | } | |
6605 | else | |
6606 | { | |
6607 | struct signatured_type find_entry, *entry; | |
348e048f | 6608 | |
5989a64e | 6609 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6610 | return NULL; |
6611 | find_entry.signature = sig; | |
9a3c8263 | 6612 | entry = ((struct signatured_type *) |
5989a64e | 6613 | htab_find (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6614 | &find_entry)); |
a2ce51a0 DE |
6615 | return entry; |
6616 | } | |
348e048f | 6617 | } |
18a8505e | 6618 | |
42e7ad6c | 6619 | /* Low level DIE reading support. */ |
348e048f | 6620 | |
d85a05f0 DJ |
6621 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6622 | ||
6623 | static void | |
6624 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6625 | struct dwarf2_cu *cu, |
3019eac3 | 6626 | struct dwarf2_section_info *section, |
685af9cd TT |
6627 | struct dwo_file *dwo_file, |
6628 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6629 | { |
fceca515 | 6630 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6631 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6632 | reader->cu = cu; |
3019eac3 | 6633 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6634 | reader->die_section = section; |
6635 | reader->buffer = section->buffer; | |
f664829e | 6636 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6637 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6638 | } |
6639 | ||
c0ab21c2 | 6640 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6641 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6642 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6643 | already. |
6644 | ||
6645 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6646 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6647 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6648 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6649 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6650 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6651 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6652 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6653 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6654 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6655 | kept around for at least as long as *RESULT_READER. | |
6656 | ||
b0c7bfa9 DE |
6657 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6658 | ||
6659 | static int | |
4ab09049 | 6660 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6661 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6662 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6663 | const char *stub_comp_dir, |
b0c7bfa9 | 6664 | struct die_reader_specs *result_reader, |
d521ce57 | 6665 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6666 | struct die_info **result_comp_unit_die, |
685af9cd | 6667 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6668 | { |
4ab09049 SM |
6669 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
6670 | dwarf2_per_cu_data *per_cu = cu->per_cu; | |
b0c7bfa9 | 6671 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
b0c7bfa9 | 6672 | bfd *abfd; |
d521ce57 | 6673 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6674 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6675 | int i,num_extra_attrs; | |
6676 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6677 | struct die_info *comp_unit_die; |
6678 | ||
b0aeadb3 DE |
6679 | /* At most one of these may be provided. */ |
6680 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6681 | |
b0c7bfa9 DE |
6682 | /* These attributes aren't processed until later: |
6683 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6684 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6685 | referenced later. However, these attributes are found in the stub | |
6686 | which we won't have later. In order to not impose this complication | |
6687 | on the rest of the code, we read them here and copy them to the | |
6688 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6689 | |
6690 | stmt_list = NULL; | |
6691 | low_pc = NULL; | |
6692 | high_pc = NULL; | |
6693 | ranges = NULL; | |
6694 | comp_dir = NULL; | |
6695 | ||
6696 | if (stub_comp_unit_die != NULL) | |
6697 | { | |
6698 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6699 | DWO file. */ | |
4ab09049 | 6700 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6701 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6702 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6703 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6704 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6705 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6706 | ||
a39fdb41 | 6707 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6708 | |
18a8505e AT |
6709 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6710 | here (if needed). We need the value before we can process | |
6711 | DW_AT_ranges. */ | |
a39fdb41 | 6712 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6713 | } |
a2ce51a0 DE |
6714 | else if (stub_comp_dir != NULL) |
6715 | { | |
6716 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6717 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6718 | comp_dir->name = DW_AT_comp_dir; |
6719 | comp_dir->form = DW_FORM_string; | |
6720 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6721 | DW_STRING (comp_dir) = stub_comp_dir; | |
6722 | } | |
b0c7bfa9 DE |
6723 | |
6724 | /* Set up for reading the DWO CU/TU. */ | |
6725 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6726 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6727 | section->read (objfile); |
6728 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6729 | begin_info_ptr = info_ptr = (section->buffer |
6730 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6731 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6732 | |
4ab09049 | 6733 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6734 | { |
4ab09049 | 6735 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6736 | |
ed2dc618 SM |
6737 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6738 | &cu->header, section, | |
b0c7bfa9 | 6739 | dwo_abbrev_section, |
43988095 | 6740 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6741 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6742 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6743 | { |
6744 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6745 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6746 | hex_string (sig_type->signature), |
43988095 | 6747 | hex_string (cu->header.signature), |
9d8780f0 | 6748 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6749 | bfd_get_filename (abfd)); |
6750 | } | |
9c541725 | 6751 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6752 | /* For DWOs coming from DWP files, we don't know the CU length |
6753 | nor the type's offset in the TU until now. */ | |
4057dfde | 6754 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6755 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6756 | |
6757 | /* Establish the type offset that can be used to lookup the type. | |
6758 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6759 | sig_type->type_offset_in_section |
6760 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6761 | } |
6762 | else | |
6763 | { | |
ed2dc618 SM |
6764 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6765 | &cu->header, section, | |
b0c7bfa9 | 6766 | dwo_abbrev_section, |
43988095 | 6767 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6768 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6769 | /* For DWOs coming from DWP files, we don't know the CU length |
6770 | until now. */ | |
4057dfde | 6771 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6772 | } |
6773 | ||
685af9cd | 6774 | *result_dwo_abbrev_table |
86de1d91 TT |
6775 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6776 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6777 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6778 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6779 | |
6780 | /* Read in the die, but leave space to copy over the attributes | |
6781 | from the stub. This has the benefit of simplifying the rest of | |
6782 | the code - all the work to maintain the illusion of a single | |
6783 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6784 | num_extra_attrs = ((stmt_list != NULL) | |
6785 | + (low_pc != NULL) | |
6786 | + (high_pc != NULL) | |
6787 | + (ranges != NULL) | |
6788 | + (comp_dir != NULL)); | |
6789 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6790 | num_extra_attrs); |
b0c7bfa9 DE |
6791 | |
6792 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6793 | comp_unit_die = *result_comp_unit_die; | |
6794 | i = comp_unit_die->num_attrs; | |
6795 | if (stmt_list != NULL) | |
6796 | comp_unit_die->attrs[i++] = *stmt_list; | |
6797 | if (low_pc != NULL) | |
6798 | comp_unit_die->attrs[i++] = *low_pc; | |
6799 | if (high_pc != NULL) | |
6800 | comp_unit_die->attrs[i++] = *high_pc; | |
6801 | if (ranges != NULL) | |
6802 | comp_unit_die->attrs[i++] = *ranges; | |
6803 | if (comp_dir != NULL) | |
6804 | comp_unit_die->attrs[i++] = *comp_dir; | |
6805 | comp_unit_die->num_attrs += num_extra_attrs; | |
6806 | ||
b4f54984 | 6807 | if (dwarf_die_debug) |
bf6af496 DE |
6808 | { |
6809 | fprintf_unfiltered (gdb_stdlog, | |
6810 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6811 | section->get_name (), |
bf6af496 DE |
6812 | (unsigned) (begin_info_ptr - section->buffer), |
6813 | bfd_get_filename (abfd)); | |
b4f54984 | 6814 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6815 | } |
6816 | ||
b0c7bfa9 DE |
6817 | /* Skip dummy compilation units. */ |
6818 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6819 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6820 | return 0; | |
6821 | ||
6822 | *result_info_ptr = info_ptr; | |
6823 | return 1; | |
6824 | } | |
6825 | ||
a084a2a6 AT |
6826 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6827 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6828 | signature is part of the header. */ | |
6829 | static gdb::optional<ULONGEST> | |
6830 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6831 | { | |
6832 | if (cu->header.version >= 5) | |
6833 | return cu->header.signature; | |
6834 | struct attribute *attr; | |
6835 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6836 | if (attr == nullptr) | |
6837 | return gdb::optional<ULONGEST> (); | |
6838 | return DW_UNSND (attr); | |
6839 | } | |
6840 | ||
c0ab21c2 | 6841 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6842 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6843 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6844 | |
6845 | static struct dwo_unit * | |
4ab09049 | 6846 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6847 | { |
4ab09049 | 6848 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 6849 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6850 | const char *comp_dir; |
b0c7bfa9 | 6851 | |
a2ce51a0 DE |
6852 | gdb_assert (cu != NULL); |
6853 | ||
b0c7bfa9 | 6854 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6855 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6856 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 6857 | |
4ab09049 SM |
6858 | if (per_cu->is_debug_types) |
6859 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
6860 | else |
6861 | { | |
a084a2a6 | 6862 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 6863 | |
a084a2a6 | 6864 | if (!signature.has_value ()) |
b0c7bfa9 DE |
6865 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6866 | " [in module %s]"), | |
4ab09049 SM |
6867 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
6868 | ||
6869 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
6870 | } |
6871 | ||
b0c7bfa9 DE |
6872 | return dwo_unit; |
6873 | } | |
6874 | ||
c0ab21c2 | 6875 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6876 | See it for a description of the parameters. |
fcd3b13d | 6877 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6878 | |
c0ab21c2 | 6879 | void |
9e021579 SM |
6880 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6881 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 6882 | dwarf2_cu *existing_cu) |
a2ce51a0 | 6883 | { |
a2ce51a0 | 6884 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6885 | |
6886 | /* Verify we can do the following downcast, and that we have the | |
6887 | data we need. */ | |
6888 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6889 | sig_type = (struct signatured_type *) this_cu; | |
6890 | gdb_assert (sig_type->dwo_unit != NULL); | |
6891 | ||
2e671100 SM |
6892 | dwarf2_cu *cu; |
6893 | ||
6894 | if (existing_cu != nullptr) | |
6aa5f3a6 | 6895 | { |
2e671100 SM |
6896 | cu = existing_cu; |
6897 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6898 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6899 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6900 | } |
6901 | else | |
6902 | { | |
7188ed02 SM |
6903 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
6904 | in per_objfile yet. */ | |
6905 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 6906 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 6907 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
6908 | } |
6909 | ||
6910 | /* A future optimization, if needed, would be to use an existing | |
6911 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6912 | could share abbrev tables. */ | |
a2ce51a0 | 6913 | |
2e671100 | 6914 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
6915 | NULL /* stub_comp_unit_die */, |
6916 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6917 | this, &info_ptr, |
3e225074 | 6918 | &comp_unit_die, |
c0ab21c2 | 6919 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6920 | { |
6921 | /* Dummy die. */ | |
c0ab21c2 | 6922 | dummy_p = true; |
a2ce51a0 | 6923 | } |
a2ce51a0 DE |
6924 | } |
6925 | ||
fd820528 | 6926 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6927 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6928 | |
f4dc4d17 DE |
6929 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6930 | Otherwise the table specified in the comp unit header is read in and used. | |
6931 | This is an optimization for when we already have the abbrev table. | |
6932 | ||
2e671100 SM |
6933 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
6934 | allocated. */ | |
aaa75496 | 6935 | |
ab432490 SM |
6936 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
6937 | dwarf2_per_objfile *dwarf2_per_objfile, | |
c0ab21c2 | 6938 | struct abbrev_table *abbrev_table, |
2e671100 | 6939 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
6940 | bool skip_partial) |
6941 | : die_reader_specs {}, | |
6751ebae | 6942 | m_this_cu (this_cu) |
c906108c | 6943 | { |
dee91e82 | 6944 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6945 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6946 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 6947 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6948 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6949 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6950 | /* Non-zero if CU currently points to a DWO file and we need to |
6951 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6952 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6953 | int rereading_dwo_cu = 0; |
c906108c | 6954 | |
b4f54984 | 6955 | if (dwarf_die_debug) |
9d8780f0 | 6956 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6957 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6958 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6959 | |
a2ce51a0 DE |
6960 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6961 | file (instead of going through the stub), short-circuit all of this. */ | |
6962 | if (this_cu->reading_dwo_directly) | |
6963 | { | |
6964 | /* Narrow down the scope of possibilities to have to understand. */ | |
6965 | gdb_assert (this_cu->is_debug_types); | |
6966 | gdb_assert (abbrev_table == NULL); | |
2e671100 | 6967 | init_tu_and_read_dwo_dies (this_cu, dwarf2_per_objfile, existing_cu); |
a2ce51a0 DE |
6968 | return; |
6969 | } | |
6970 | ||
dee91e82 | 6971 | /* This is cheap if the section is already read in. */ |
96b79293 | 6972 | section->read (objfile); |
dee91e82 | 6973 | |
9c541725 | 6974 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6975 | |
6976 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 6977 | |
2e671100 SM |
6978 | dwarf2_cu *cu; |
6979 | ||
6980 | if (existing_cu != nullptr) | |
dee91e82 | 6981 | { |
2e671100 | 6982 | cu = existing_cu; |
42e7ad6c DE |
6983 | /* If this CU is from a DWO file we need to start over, we need to |
6984 | refetch the attributes from the skeleton CU. | |
6985 | This could be optimized by retrieving those attributes from when we | |
6986 | were here the first time: the previous comp_unit_die was stored in | |
6987 | comp_unit_obstack. But there's no data yet that we need this | |
6988 | optimization. */ | |
6989 | if (cu->dwo_unit != NULL) | |
6990 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6991 | } |
6992 | else | |
6993 | { | |
7188ed02 SM |
6994 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
6995 | in per_objfile yet. */ | |
6996 | gdb_assert (dwarf2_per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 6997 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
c0ab21c2 | 6998 | cu = m_new_cu.get (); |
42e7ad6c | 6999 | } |
dee91e82 | 7000 | |
b0c7bfa9 | 7001 | /* Get the header. */ |
9c541725 | 7002 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7003 | { |
7004 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7005 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7006 | } |
7007 | else | |
7008 | { | |
3019eac3 | 7009 | if (this_cu->is_debug_types) |
dee91e82 | 7010 | { |
ed2dc618 SM |
7011 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7012 | &cu->header, section, | |
4bdcc0c1 | 7013 | abbrev_section, info_ptr, |
43988095 | 7014 | rcuh_kind::TYPE); |
dee91e82 | 7015 | |
42e7ad6c DE |
7016 | /* Since per_cu is the first member of struct signatured_type, |
7017 | we can go from a pointer to one to a pointer to the other. */ | |
7018 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7019 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7020 | gdb_assert (sig_type->type_offset_in_tu |
7021 | == cu->header.type_cu_offset_in_tu); | |
7022 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7023 | |
42e7ad6c DE |
7024 | /* LENGTH has not been set yet for type units if we're |
7025 | using .gdb_index. */ | |
4057dfde | 7026 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7027 | |
7028 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7029 | sig_type->type_offset_in_section = |
7030 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7031 | |
7032 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7033 | } |
7034 | else | |
7035 | { | |
ed2dc618 SM |
7036 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7037 | &cu->header, section, | |
4bdcc0c1 | 7038 | abbrev_section, |
43988095 JK |
7039 | info_ptr, |
7040 | rcuh_kind::COMPILE); | |
dee91e82 | 7041 | |
9c541725 | 7042 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7043 | if (this_cu->length == 0) |
7044 | this_cu->length = cu->header.get_length (); | |
7045 | else | |
7046 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7047 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7048 | } |
7049 | } | |
10b3939b | 7050 | |
6caca83c | 7051 | /* Skip dummy compilation units. */ |
dee91e82 | 7052 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7053 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7054 | { |
7055 | dummy_p = true; | |
7056 | return; | |
7057 | } | |
6caca83c | 7058 | |
433df2d4 DE |
7059 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7060 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7061 | done. */ |
f4dc4d17 | 7062 | if (abbrev_table != NULL) |
685af9cd TT |
7063 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7064 | else | |
f4dc4d17 | 7065 | { |
c0ab21c2 | 7066 | m_abbrev_table_holder |
86de1d91 TT |
7067 | = abbrev_table::read (objfile, abbrev_section, |
7068 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7069 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7070 | } |
af703f96 | 7071 | |
dee91e82 | 7072 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7073 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7074 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7075 | |
58f0c718 | 7076 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7077 | { |
7078 | dummy_p = true; | |
7079 | return; | |
7080 | } | |
58f0c718 | 7081 | |
b0c7bfa9 | 7082 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7083 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7084 | table from the DWO file and pass the ownership over to us. It will be | |
7085 | referenced from READER, so we must make sure to free it after we're done | |
7086 | with READER. | |
7087 | ||
b0c7bfa9 DE |
7088 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7089 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7090 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7091 | if (dwo_name != nullptr) |
3019eac3 | 7092 | { |
3019eac3 | 7093 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7094 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7095 | |
3e225074 | 7096 | if (comp_unit_die->has_children) |
6a506a2d | 7097 | { |
b98664d3 | 7098 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7099 | " has children (offset %s) [in module %s]"), |
7100 | sect_offset_str (this_cu->sect_off), | |
7101 | bfd_get_filename (abfd)); | |
6a506a2d | 7102 | } |
4ab09049 | 7103 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7104 | if (dwo_unit != NULL) |
3019eac3 | 7105 | { |
4ab09049 | 7106 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7107 | comp_unit_die, NULL, |
c0ab21c2 | 7108 | this, &info_ptr, |
3e225074 | 7109 | &dwo_comp_unit_die, |
c0ab21c2 | 7110 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7111 | { |
7112 | /* Dummy die. */ | |
c0ab21c2 | 7113 | dummy_p = true; |
6a506a2d DE |
7114 | return; |
7115 | } | |
7116 | comp_unit_die = dwo_comp_unit_die; | |
7117 | } | |
7118 | else | |
7119 | { | |
7120 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7121 | the stub. A complaint has already been logged. There's | |
7122 | not much more we can do except pass on the stub DIE to | |
7123 | die_reader_func. We don't want to throw an error on bad | |
7124 | debug info. */ | |
3019eac3 DE |
7125 | } |
7126 | } | |
c0ab21c2 | 7127 | } |
3019eac3 | 7128 | |
6751ebae TT |
7129 | void |
7130 | cutu_reader::keep () | |
c0ab21c2 | 7131 | { |
b0c7bfa9 | 7132 | /* Done, clean up. */ |
6751ebae TT |
7133 | gdb_assert (!dummy_p); |
7134 | if (m_new_cu != NULL) | |
348e048f | 7135 | { |
7188ed02 SM |
7136 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
7137 | now. */ | |
7138 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; | |
7139 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7140 | } |
dee91e82 DE |
7141 | } |
7142 | ||
18a8505e AT |
7143 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7144 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7145 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7146 | |
7147 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7148 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7149 | |
7150 | We fill in THIS_CU->length. | |
7151 | ||
dee91e82 | 7152 | THIS_CU->cu is always freed when done. |
3019eac3 | 7153 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7154 | to care whether it refers to the "main" CU or the DWO CU. |
7155 | ||
7156 | When parent_cu is passed, it is used to provide a default value for | |
7157 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7158 | |
ab432490 SM |
7159 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
7160 | dwarf2_per_objfile *dwarf2_per_objfile, | |
c0ab21c2 TT |
7161 | struct dwarf2_cu *parent_cu, |
7162 | struct dwo_file *dwo_file) | |
7163 | : die_reader_specs {}, | |
7164 | m_this_cu (this_cu) | |
dee91e82 DE |
7165 | { |
7166 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 7167 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7168 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7169 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7170 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7171 | |
b4f54984 | 7172 | if (dwarf_die_debug) |
9d8780f0 | 7173 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7174 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7175 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7176 | |
7188ed02 | 7177 | gdb_assert (dwarf2_per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7178 | |
33e80786 DE |
7179 | abbrev_section = (dwo_file != NULL |
7180 | ? &dwo_file->sections.abbrev | |
7181 | : get_abbrev_section_for_cu (this_cu)); | |
7182 | ||
dee91e82 | 7183 | /* This is cheap if the section is already read in. */ |
96b79293 | 7184 | section->read (objfile); |
dee91e82 | 7185 | |
9e021579 | 7186 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
dee91e82 | 7187 | |
9c541725 | 7188 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7189 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7190 | &m_new_cu->header, section, |
4bdcc0c1 | 7191 | abbrev_section, info_ptr, |
43988095 JK |
7192 | (this_cu->is_debug_types |
7193 | ? rcuh_kind::TYPE | |
7194 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7195 | |
18a8505e AT |
7196 | if (parent_cu != nullptr) |
7197 | { | |
c0ab21c2 TT |
7198 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7199 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7200 | } |
4057dfde | 7201 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7202 | |
7203 | /* Skip dummy compilation units. */ | |
7204 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7205 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7206 | { |
7207 | dummy_p = true; | |
7208 | return; | |
7209 | } | |
72bf9492 | 7210 | |
c0ab21c2 | 7211 | m_abbrev_table_holder |
86de1d91 TT |
7212 | = abbrev_table::read (objfile, abbrev_section, |
7213 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7214 | |
c0ab21c2 TT |
7215 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7216 | m_abbrev_table_holder.get ()); | |
3e225074 | 7217 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7218 | } |
7219 | ||
0018ea6f DE |
7220 | \f |
7221 | /* Type Unit Groups. | |
dee91e82 | 7222 | |
0018ea6f DE |
7223 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7224 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7225 | so that all types coming from the same compilation (.o file) are grouped | |
7226 | together. A future step could be to put the types in the same symtab as | |
7227 | the CU the types ultimately came from. */ | |
ff013f42 | 7228 | |
f4dc4d17 DE |
7229 | static hashval_t |
7230 | hash_type_unit_group (const void *item) | |
7231 | { | |
9a3c8263 SM |
7232 | const struct type_unit_group *tu_group |
7233 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7234 | |
094b34ac | 7235 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7236 | } |
348e048f DE |
7237 | |
7238 | static int | |
f4dc4d17 | 7239 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7240 | { |
9a3c8263 SM |
7241 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7242 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7243 | |
094b34ac | 7244 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7245 | } |
348e048f | 7246 | |
f4dc4d17 DE |
7247 | /* Allocate a hash table for type unit groups. */ |
7248 | ||
eaa5fa8b | 7249 | static htab_up |
298e9637 | 7250 | allocate_type_unit_groups_table () |
f4dc4d17 | 7251 | { |
eaa5fa8b TT |
7252 | return htab_up (htab_create_alloc (3, |
7253 | hash_type_unit_group, | |
7254 | eq_type_unit_group, | |
7255 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7256 | } |
dee91e82 | 7257 | |
f4dc4d17 DE |
7258 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7259 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7260 | of any one psymtab grow too big. */ | |
7261 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7262 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7263 | |
094b34ac | 7264 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7265 | Create the type_unit_group object used to hold one or more TUs. */ |
7266 | ||
7267 | static struct type_unit_group * | |
094b34ac | 7268 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7269 | { |
5e22e966 | 7270 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
1859c670 | 7271 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
094b34ac | 7272 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7273 | struct type_unit_group *tu_group; |
f4dc4d17 | 7274 | |
5989a64e | 7275 | tu_group = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
f4dc4d17 | 7276 | struct type_unit_group); |
094b34ac | 7277 | per_cu = &tu_group->per_cu; |
1859c670 | 7278 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7279 | |
1859c670 | 7280 | if (per_bfd->using_index) |
094b34ac | 7281 | { |
1859c670 | 7282 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7283 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7284 | } |
7285 | else | |
7286 | { | |
9c541725 | 7287 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7288 | dwarf2_psymtab *pst; |
528e1572 | 7289 | std::string name; |
094b34ac DE |
7290 | |
7291 | /* Give the symtab a useful name for debug purposes. */ | |
7292 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7293 | name = string_printf ("<type_units_%d>", |
7294 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7295 | else |
528e1572 | 7296 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7297 | |
7aa104c4 | 7298 | pst = create_partial_symtab (per_cu, dwarf2_per_objfile, name.c_str ()); |
6d94535f | 7299 | pst->anonymous = true; |
094b34ac | 7300 | } |
f4dc4d17 | 7301 | |
094b34ac | 7302 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7303 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7304 | |
7305 | return tu_group; | |
7306 | } | |
7307 | ||
094b34ac DE |
7308 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7309 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7310 | |
7311 | static struct type_unit_group * | |
ff39bb5e | 7312 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7313 | { |
5e22e966 | 7314 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
5989a64e | 7315 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
f4dc4d17 DE |
7316 | struct type_unit_group *tu_group; |
7317 | void **slot; | |
7318 | unsigned int line_offset; | |
7319 | struct type_unit_group type_unit_group_for_lookup; | |
7320 | ||
5989a64e SM |
7321 | if (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL) |
7322 | dwarf2_per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7323 | |
7324 | /* Do we need to create a new group, or can we use an existing one? */ | |
7325 | ||
7326 | if (stmt_list) | |
7327 | { | |
7328 | line_offset = DW_UNSND (stmt_list); | |
7329 | ++tu_stats->nr_symtab_sharers; | |
7330 | } | |
7331 | else | |
7332 | { | |
7333 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7334 | We can do various things here like create one group per TU or | |
7335 | spread them over multiple groups to split up the expansion work. | |
7336 | To avoid worst case scenarios (too many groups or too large groups) | |
7337 | we, umm, group them in bunches. */ | |
7338 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7339 | | (tu_stats->nr_stmt_less_type_units | |
7340 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7341 | ++tu_stats->nr_stmt_less_type_units; | |
7342 | } | |
7343 | ||
094b34ac | 7344 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7345 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
5989a64e | 7346 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7347 | &type_unit_group_for_lookup, INSERT); |
7348 | if (*slot != NULL) | |
7349 | { | |
9a3c8263 | 7350 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7351 | gdb_assert (tu_group != NULL); |
7352 | } | |
7353 | else | |
7354 | { | |
9c541725 | 7355 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7356 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7357 | *slot = tu_group; |
7358 | ++tu_stats->nr_symtabs; | |
7359 | } | |
7360 | ||
7361 | return tu_group; | |
7362 | } | |
0018ea6f DE |
7363 | \f |
7364 | /* Partial symbol tables. */ | |
7365 | ||
7366 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7367 | ||
7368 | The caller must fill in the following details: | |
7369 | dirname, textlow, texthigh. */ | |
7370 | ||
891813be | 7371 | static dwarf2_psymtab * |
7aa104c4 SM |
7372 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7373 | dwarf2_per_objfile *per_objfile, | |
7374 | const char *name) | |
0018ea6f | 7375 | { |
7aa104c4 | 7376 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7377 | dwarf2_psymtab *pst; |
0018ea6f | 7378 | |
9f4e76a4 | 7379 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7380 | |
6d94535f | 7381 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7382 | |
7383 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7384 | per_cu->v.psymtab = pst; |
7385 | ||
7386 | return pst; | |
7387 | } | |
7388 | ||
c0ab21c2 | 7389 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7390 | |
7391 | static void | |
7392 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7393 | const gdb_byte *info_ptr, |
0018ea6f | 7394 | struct die_info *comp_unit_die, |
c0ab21c2 | 7395 | enum language pretend_language) |
0018ea6f DE |
7396 | { |
7397 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7398 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7399 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7400 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7401 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7402 | CORE_ADDR baseaddr; |
7403 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7404 | dwarf2_psymtab *pst; |
3a2b436a | 7405 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7406 | const char *filename; |
0018ea6f | 7407 | |
0018ea6f DE |
7408 | gdb_assert (! per_cu->is_debug_types); |
7409 | ||
c0ab21c2 | 7410 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7411 | |
0018ea6f | 7412 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7413 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7414 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7415 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7416 | if (filename == NULL) | |
0018ea6f | 7417 | filename = ""; |
2e927613 TV |
7418 | else if (strcmp (filename, artificial) == 0) |
7419 | { | |
7420 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7421 | sect_offset_str (per_cu->sect_off), |
7422 | (char *) NULL)); | |
2e927613 TV |
7423 | filename = debug_filename.get (); |
7424 | } | |
0018ea6f | 7425 | |
7aa104c4 | 7426 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7427 | |
7428 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7429 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7430 | |
b3b3bada | 7431 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7432 | |
7433 | dwarf2_find_base_address (comp_unit_die, cu); | |
7434 | ||
7435 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7436 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7437 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7438 | &best_highpc, cu, pst); | |
7439 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7440 | { |
7441 | CORE_ADDR low | |
7442 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7443 | - baseaddr); | |
7444 | CORE_ADDR high | |
7445 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7446 | - baseaddr - 1); | |
7447 | /* Store the contiguous range if it is not empty; it can be | |
7448 | empty for CUs with no code. */ | |
d320c2b5 TT |
7449 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7450 | low, high, pst); | |
79748972 | 7451 | } |
0018ea6f DE |
7452 | |
7453 | /* Check if comp unit has_children. | |
7454 | If so, read the rest of the partial symbols from this comp unit. | |
7455 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7456 | if (comp_unit_die->has_children) |
0018ea6f DE |
7457 | { |
7458 | struct partial_die_info *first_die; | |
7459 | CORE_ADDR lowpc, highpc; | |
7460 | ||
7461 | lowpc = ((CORE_ADDR) -1); | |
7462 | highpc = ((CORE_ADDR) 0); | |
7463 | ||
7464 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7465 | ||
7466 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7467 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7468 | |
7469 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7470 | complaints from `maint check'. */ | |
7471 | if (lowpc == ((CORE_ADDR) -1)) | |
7472 | lowpc = highpc; | |
7473 | ||
7474 | /* If the compilation unit didn't have an explicit address range, | |
7475 | then use the information extracted from its child dies. */ | |
e385593e | 7476 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7477 | { |
7478 | best_lowpc = lowpc; | |
7479 | best_highpc = highpc; | |
7480 | } | |
7481 | } | |
4ae976d1 | 7482 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7483 | best_lowpc + baseaddr) |
7484 | - baseaddr); | |
4ae976d1 | 7485 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7486 | best_highpc + baseaddr) |
7487 | - baseaddr); | |
0018ea6f | 7488 | |
8763cede | 7489 | end_psymtab_common (objfile, pst); |
0018ea6f | 7490 | |
ae640021 | 7491 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7492 | { |
7493 | int i; | |
ae640021 | 7494 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7495 | |
7496 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7497 | post-pass. */ | |
7498 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7499 | pst->dependencies |
7500 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7501 | for (i = 0; i < len; ++i) |
7502 | { | |
7503 | pst->dependencies[i] | |
7504 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7505 | } | |
0018ea6f | 7506 | |
ae640021 | 7507 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7508 | } |
7509 | ||
7510 | /* Get the list of files included in the current compilation unit, | |
7511 | and build a psymtab for each of them. */ | |
7512 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7513 | ||
b4f54984 | 7514 | if (dwarf_read_debug) |
b926417a TT |
7515 | fprintf_unfiltered (gdb_stdlog, |
7516 | "Psymtab for %s unit @%s: %s - %s" | |
7517 | ", %d global, %d static syms\n", | |
7518 | per_cu->is_debug_types ? "type" : "comp", | |
7519 | sect_offset_str (per_cu->sect_off), | |
7520 | paddress (gdbarch, pst->text_low (objfile)), | |
7521 | paddress (gdbarch, pst->text_high (objfile)), | |
7522 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7523 | } |
7524 | ||
7525 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7526 | Process compilation unit THIS_CU for a psymtab. */ | |
7527 | ||
7528 | static void | |
ab432490 SM |
7529 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7530 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7531 | bool want_partial_unit, |
b93601f3 | 7532 | enum language pretend_language) |
0018ea6f DE |
7533 | { |
7534 | /* If this compilation unit was already read in, free the | |
7535 | cached copy in order to read it in again. This is | |
7536 | necessary because we skipped some symbols when we first | |
7537 | read in the compilation unit (see load_partial_dies). | |
7538 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7539 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7540 | |
2e671100 | 7541 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7542 | |
58990295 TV |
7543 | switch (reader.comp_unit_die->tag) |
7544 | { | |
7545 | case DW_TAG_compile_unit: | |
7546 | this_cu->unit_type = DW_UT_compile; | |
7547 | break; | |
7548 | case DW_TAG_partial_unit: | |
7549 | this_cu->unit_type = DW_UT_partial; | |
7550 | break; | |
7551 | default: | |
7552 | abort (); | |
7553 | } | |
7554 | ||
c0ab21c2 | 7555 | if (reader.dummy_p) |
f1902523 | 7556 | { |
c0ab21c2 | 7557 | /* Nothing. */ |
f1902523 | 7558 | } |
c0ab21c2 | 7559 | else if (this_cu->is_debug_types) |
3e225074 TT |
7560 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7561 | reader.comp_unit_die); | |
135f5437 TT |
7562 | else if (want_partial_unit |
7563 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7564 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7565 | reader.comp_unit_die, | |
c0ab21c2 | 7566 | pretend_language); |
0018ea6f | 7567 | |
7188ed02 | 7568 | this_cu->lang = reader.cu->language; |
58990295 | 7569 | |
0018ea6f | 7570 | /* Age out any secondary CUs. */ |
7188ed02 | 7571 | per_objfile->age_comp_units (); |
0018ea6f | 7572 | } |
f4dc4d17 DE |
7573 | |
7574 | /* Reader function for build_type_psymtabs. */ | |
7575 | ||
7576 | static void | |
7577 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7578 | const gdb_byte *info_ptr, |
3e225074 | 7579 | struct die_info *type_unit_die) |
f4dc4d17 | 7580 | { |
5e22e966 | 7581 | struct dwarf2_per_objfile *dwarf2_per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7582 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7583 | struct dwarf2_cu *cu = reader->cu; | |
7584 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7585 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7586 | struct type_unit_group *tu_group; |
7587 | struct attribute *attr; | |
7588 | struct partial_die_info *first_die; | |
7589 | CORE_ADDR lowpc, highpc; | |
891813be | 7590 | dwarf2_psymtab *pst; |
f4dc4d17 | 7591 | |
0186c6a7 DE |
7592 | gdb_assert (per_cu->is_debug_types); |
7593 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7594 | |
3e225074 | 7595 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7596 | return; |
7597 | ||
052c8bb8 | 7598 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7599 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7600 | |
df07e2c7 | 7601 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7602 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7603 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7604 | |
7605 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
7aa104c4 | 7606 | pst = create_partial_symtab (per_cu, dwarf2_per_objfile, ""); |
6d94535f | 7607 | pst->anonymous = true; |
f4dc4d17 DE |
7608 | |
7609 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7610 | ||
7611 | lowpc = (CORE_ADDR) -1; | |
7612 | highpc = (CORE_ADDR) 0; | |
7613 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7614 | ||
8763cede | 7615 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7616 | } |
7617 | ||
73051182 DE |
7618 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7619 | ||
7620 | struct tu_abbrev_offset | |
7621 | { | |
b2bdb8cf SM |
7622 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7623 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7624 | {} | |
7625 | ||
7626 | signatured_type *sig_type; | |
73051182 DE |
7627 | sect_offset abbrev_offset; |
7628 | }; | |
7629 | ||
484cf504 | 7630 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7631 | |
484cf504 TT |
7632 | static bool |
7633 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7634 | const struct tu_abbrev_offset &b) | |
73051182 | 7635 | { |
484cf504 | 7636 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7637 | } |
7638 | ||
7639 | /* Efficiently read all the type units. | |
7640 | This does the bulk of the work for build_type_psymtabs. | |
7641 | ||
7642 | The efficiency is because we sort TUs by the abbrev table they use and | |
7643 | only read each abbrev table once. In one program there are 200K TUs | |
7644 | sharing 8K abbrev tables. | |
7645 | ||
7646 | The main purpose of this function is to support building the | |
5989a64e | 7647 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7648 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7649 | can collapse the search space by grouping them by stmt_list. | |
7650 | The savings can be significant, in the same program from above the 200K TUs | |
7651 | share 8K stmt_list tables. | |
7652 | ||
7653 | FUNC is expected to call get_type_unit_group, which will create the | |
7654 | struct type_unit_group if necessary and add it to | |
5989a64e | 7655 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7656 | |
7657 | static void | |
ed2dc618 | 7658 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7659 | { |
5989a64e | 7660 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
685af9cd | 7661 | abbrev_table_up abbrev_table; |
73051182 | 7662 | sect_offset abbrev_offset; |
73051182 DE |
7663 | |
7664 | /* It's up to the caller to not call us multiple times. */ | |
5989a64e | 7665 | gdb_assert (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7666 | |
5989a64e | 7667 | if (dwarf2_per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7668 | return; |
7669 | ||
7670 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7671 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7672 | read each abbrev table in. | |
7673 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7674 | This is simpler and efficient enough for now. | |
7675 | ||
7676 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7677 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7678 | stmt_list value too so in practice this should work well. | |
7679 | ||
7680 | The basic algorithm here is: | |
7681 | ||
7682 | sort TUs by abbrev table | |
7683 | for each TU with same abbrev table: | |
7684 | read abbrev table if first user | |
7685 | read TU top level DIE | |
7686 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7687 | call FUNC */ | |
7688 | ||
b4f54984 | 7689 | if (dwarf_read_debug) |
73051182 DE |
7690 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7691 | ||
7692 | /* Sort in a separate table to maintain the order of all_type_units | |
7693 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7694 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
5989a64e | 7695 | sorted_by_abbrev.reserve (dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7696 | |
5989a64e | 7697 | for (signatured_type *sig_type : dwarf2_per_objfile->per_bfd->all_type_units) |
b2bdb8cf SM |
7698 | sorted_by_abbrev.emplace_back |
7699 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7700 | sig_type->per_cu.section, | |
7701 | sig_type->per_cu.sect_off)); | |
73051182 | 7702 | |
484cf504 TT |
7703 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7704 | sort_tu_by_abbrev_offset); | |
73051182 | 7705 | |
9c541725 | 7706 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7707 | |
b2bdb8cf | 7708 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7709 | { |
73051182 DE |
7710 | /* Switch to the next abbrev table if necessary. */ |
7711 | if (abbrev_table == NULL | |
b2bdb8cf | 7712 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7713 | { |
b2bdb8cf | 7714 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7715 | abbrev_table = |
86de1d91 | 7716 | abbrev_table::read (dwarf2_per_objfile->objfile, |
5989a64e | 7717 | &dwarf2_per_objfile->per_bfd->abbrev, |
86de1d91 | 7718 | abbrev_offset); |
73051182 DE |
7719 | ++tu_stats->nr_uniq_abbrev_tables; |
7720 | } | |
7721 | ||
ab432490 | 7722 | cutu_reader reader (&tu.sig_type->per_cu, dwarf2_per_objfile, |
2e671100 | 7723 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7724 | if (!reader.dummy_p) |
7725 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7726 | reader.comp_unit_die); |
73051182 | 7727 | } |
6aa5f3a6 | 7728 | } |
73051182 | 7729 | |
6aa5f3a6 DE |
7730 | /* Print collected type unit statistics. */ |
7731 | ||
7732 | static void | |
ed2dc618 | 7733 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 | 7734 | { |
5989a64e | 7735 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7736 | |
7737 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7738 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
5989a64e | 7739 | dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7740 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7741 | tu_stats->nr_uniq_abbrev_tables); | |
7742 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7743 | tu_stats->nr_symtabs); | |
7744 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7745 | tu_stats->nr_symtab_sharers); | |
7746 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7747 | tu_stats->nr_stmt_less_type_units); | |
7748 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7749 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7750 | } |
7751 | ||
f4dc4d17 DE |
7752 | /* Traversal function for build_type_psymtabs. */ |
7753 | ||
7754 | static int | |
7755 | build_type_psymtab_dependencies (void **slot, void *info) | |
7756 | { | |
ed2dc618 SM |
7757 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7758 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7759 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7760 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7761 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7762 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7763 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7764 | int i; |
7765 | ||
7766 | gdb_assert (len > 0); | |
197400e8 | 7767 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7768 | |
7769 | pst->number_of_dependencies = len; | |
a9342b62 | 7770 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7771 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7772 | { |
df07e2c7 | 7773 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7774 | gdb_assert (iter->per_cu.is_debug_types); |
7775 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7776 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7777 | } |
7778 | ||
df07e2c7 AB |
7779 | delete tu_group->tus; |
7780 | tu_group->tus = nullptr; | |
348e048f DE |
7781 | |
7782 | return 1; | |
7783 | } | |
7784 | ||
7785 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7786 | Build partial symbol tables for the .debug_types comp-units. */ | |
7787 | ||
7788 | static void | |
ed2dc618 | 7789 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7790 | { |
ed2dc618 | 7791 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7792 | return; |
7793 | ||
ed2dc618 | 7794 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7795 | } |
f4dc4d17 | 7796 | |
6aa5f3a6 DE |
7797 | /* Traversal function for process_skeletonless_type_unit. |
7798 | Read a TU in a DWO file and build partial symbols for it. */ | |
7799 | ||
7800 | static int | |
7801 | process_skeletonless_type_unit (void **slot, void *info) | |
7802 | { | |
7803 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7804 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7805 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7806 | struct signatured_type find_entry, *entry; |
7807 | ||
7808 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7809 | ||
5989a64e SM |
7810 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
7811 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7812 | |
7813 | find_entry.signature = dwo_unit->signature; | |
5989a64e | 7814 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7815 | &find_entry, INSERT); |
6aa5f3a6 DE |
7816 | /* If we've already seen this type there's nothing to do. What's happening |
7817 | is we're doing our own version of comdat-folding here. */ | |
7818 | if (*slot != NULL) | |
7819 | return 1; | |
7820 | ||
7821 | /* This does the job that create_all_type_units would have done for | |
7822 | this TU. */ | |
ed2dc618 SM |
7823 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7824 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7825 | *slot = entry; |
7826 | ||
7827 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
2e671100 SM |
7828 | cutu_reader reader (&entry->per_cu, dwarf2_per_objfile, nullptr, nullptr, |
7829 | false); | |
c0ab21c2 TT |
7830 | if (!reader.dummy_p) |
7831 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7832 | reader.comp_unit_die); |
6aa5f3a6 DE |
7833 | |
7834 | return 1; | |
7835 | } | |
7836 | ||
7837 | /* Traversal function for process_skeletonless_type_units. */ | |
7838 | ||
7839 | static int | |
7840 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7841 | { | |
7842 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7843 | ||
7844 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7845 | htab_traverse_noresize (dwo_file->tus.get (), |
7846 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7847 | |
7848 | return 1; | |
7849 | } | |
7850 | ||
7851 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7852 | This is needed in case a TU was emitted without its skeleton. | |
7853 | Note: This can't be done until we know what all the DWO files are. */ | |
7854 | ||
7855 | static void | |
ed2dc618 | 7856 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7857 | { |
7858 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7859 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
5989a64e | 7860 | && dwarf2_per_objfile->per_bfd->dwo_files != NULL) |
6aa5f3a6 | 7861 | { |
5989a64e | 7862 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7863 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7864 | dwarf2_per_objfile); |
6aa5f3a6 | 7865 | } |
348e048f DE |
7866 | } |
7867 | ||
ed2dc618 | 7868 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7869 | |
7870 | static void | |
ed2dc618 | 7871 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7872 | { |
5989a64e | 7873 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
95554aad | 7874 | { |
891813be | 7875 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7876 | |
36586728 TT |
7877 | if (pst == NULL) |
7878 | continue; | |
7879 | ||
b76e467d | 7880 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7881 | { |
7882 | /* Set the 'user' field only if it is not already set. */ | |
7883 | if (pst->dependencies[j]->user == NULL) | |
7884 | pst->dependencies[j]->user = pst; | |
7885 | } | |
7886 | } | |
7887 | } | |
7888 | ||
93311388 DE |
7889 | /* Build the partial symbol table by doing a quick pass through the |
7890 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7891 | |
93311388 | 7892 | static void |
ed2dc618 | 7893 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7894 | { |
ed2dc618 | 7895 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7896 | |
b4f54984 | 7897 | if (dwarf_read_debug) |
45cfd468 DE |
7898 | { |
7899 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7900 | objfile_name (objfile)); |
45cfd468 DE |
7901 | } |
7902 | ||
76935768 | 7903 | scoped_restore restore_reading_psyms |
5989a64e | 7904 | = make_scoped_restore (&dwarf2_per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 7905 | true); |
98bfdba5 | 7906 | |
5989a64e | 7907 | dwarf2_per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 7908 | |
93311388 DE |
7909 | /* Any cached compilation units will be linked by the per-objfile |
7910 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7911 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7912 | |
ed2dc618 | 7913 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7914 | |
ed2dc618 | 7915 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7916 | |
60606b2c TT |
7917 | /* Create a temporary address map on a temporary obstack. We later |
7918 | copy this to the final obstack. */ | |
8268c778 | 7919 | auto_obstack temp_obstack; |
791afaa2 TT |
7920 | |
7921 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7922 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7923 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7924 | |
5989a64e | 7925 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
7926 | { |
7927 | if (per_cu->v.psymtab != NULL) | |
7928 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7929 | continue; | |
ab432490 SM |
7930 | process_psymtab_comp_unit (per_cu, dwarf2_per_objfile, false, |
7931 | language_minimal); | |
3d5afab3 | 7932 | } |
ff013f42 | 7933 | |
6aa5f3a6 | 7934 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7935 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7936 | |
7937 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5989a64e | 7938 | if (dwarf2_per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 7939 | { |
5989a64e | 7940 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
ed2dc618 | 7941 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7942 | } |
7943 | ||
b4f54984 | 7944 | if (dwarf_read_debug) |
ed2dc618 | 7945 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7946 | |
ed2dc618 | 7947 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7948 | |
d320c2b5 TT |
7949 | objfile->partial_symtabs->psymtabs_addrmap |
7950 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7951 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7952 | /* At this point we want to keep the address map. */ |
7953 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7954 | |
b4f54984 | 7955 | if (dwarf_read_debug) |
45cfd468 | 7956 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7957 | objfile_name (objfile)); |
ae038cb0 DJ |
7958 | } |
7959 | ||
dee91e82 DE |
7960 | /* Load the partial DIEs for a secondary CU into memory. |
7961 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7962 | |
dee91e82 | 7963 | static void |
ab432490 | 7964 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
7965 | dwarf2_per_objfile *per_objfile, |
7966 | dwarf2_cu *existing_cu) | |
dee91e82 | 7967 | { |
2e671100 | 7968 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
7969 | |
7970 | if (!reader.dummy_p) | |
7971 | { | |
7972 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7973 | language_minimal); | |
7974 | ||
7975 | /* Check if comp unit has_children. | |
7976 | If so, read the rest of the partial symbols from this comp unit. | |
7977 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7978 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7979 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7980 | |
7981 | reader.keep (); | |
c0ab21c2 | 7982 | } |
ae038cb0 DJ |
7983 | } |
7984 | ||
ae038cb0 | 7985 | static void |
ed2dc618 | 7986 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 7987 | struct dwarf2_section_info *section, |
f1902523 | 7988 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7989 | unsigned int is_dwz) |
ae038cb0 | 7990 | { |
d521ce57 | 7991 | const gdb_byte *info_ptr; |
ed2dc618 | 7992 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 7993 | |
b4f54984 | 7994 | if (dwarf_read_debug) |
bf6af496 | 7995 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
7996 | section->get_name (), |
7997 | section->get_file_name ()); | |
bf6af496 | 7998 | |
96b79293 | 7999 | section->read (objfile); |
ae038cb0 | 8000 | |
36586728 | 8001 | info_ptr = section->buffer; |
6e70227d | 8002 | |
36586728 | 8003 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8004 | { |
ae038cb0 | 8005 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8006 | |
9c541725 | 8007 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8008 | |
f1902523 | 8009 | comp_unit_head cu_header; |
ed2dc618 SM |
8010 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8011 | abbrev_section, info_ptr, | |
8012 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8013 | |
8014 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8015 | if (cu_header.unit_type != DW_UT_type) |
5989a64e | 8016 | this_cu = dwarf2_per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8017 | else |
8018 | { | |
5989a64e | 8019 | auto sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8020 | sig_type->signature = cu_header.signature; |
8021 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8022 | this_cu = &sig_type->per_cu; | |
8023 | } | |
8024 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8025 | this_cu->sect_off = sect_off; |
f1902523 | 8026 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8027 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8028 | this_cu->section = section; |
ae038cb0 | 8029 | |
5989a64e | 8030 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8031 | |
8032 | info_ptr = info_ptr + this_cu->length; | |
8033 | } | |
36586728 TT |
8034 | } |
8035 | ||
8036 | /* Create a list of all compilation units in OBJFILE. | |
8037 | This is only done for -readnow and building partial symtabs. */ | |
8038 | ||
8039 | static void | |
ed2dc618 | 8040 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8041 | { |
5989a64e SM |
8042 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units.empty ()); |
8043 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->per_bfd->info, | |
8044 | &dwarf2_per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8045 | |
c3699833 | 8046 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 8047 | if (dwz != NULL) |
ed2dc618 | 8048 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8049 | 1); |
c906108c SS |
8050 | } |
8051 | ||
5734ee8b | 8052 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8053 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8054 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8055 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8056 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8057 | |
72bf9492 DJ |
8058 | static void |
8059 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8060 | CORE_ADDR *highpc, int set_addrmap, |
8061 | struct dwarf2_cu *cu) | |
c906108c | 8062 | { |
72bf9492 | 8063 | struct partial_die_info *pdi; |
c906108c | 8064 | |
91c24f0a DC |
8065 | /* Now, march along the PDI's, descending into ones which have |
8066 | interesting children but skipping the children of the other ones, | |
8067 | until we reach the end of the compilation unit. */ | |
c906108c | 8068 | |
72bf9492 | 8069 | pdi = first_die; |
91c24f0a | 8070 | |
72bf9492 DJ |
8071 | while (pdi != NULL) |
8072 | { | |
52356b79 | 8073 | pdi->fixup (cu); |
c906108c | 8074 | |
f55ee35c | 8075 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8076 | children, so we need to look at them. Ditto for anonymous |
8077 | enums. */ | |
933c6fe4 | 8078 | |
72bf9492 | 8079 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8080 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8081 | || pdi->tag == DW_TAG_imported_unit |
8082 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8083 | { |
72bf9492 | 8084 | switch (pdi->tag) |
c906108c SS |
8085 | { |
8086 | case DW_TAG_subprogram: | |
b1dc1806 | 8087 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8088 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8089 | break; |
72929c62 | 8090 | case DW_TAG_constant: |
c906108c SS |
8091 | case DW_TAG_variable: |
8092 | case DW_TAG_typedef: | |
91c24f0a | 8093 | case DW_TAG_union_type: |
317d2668 TV |
8094 | if (!pdi->is_declaration |
8095 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8096 | { |
72bf9492 | 8097 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8098 | } |
8099 | break; | |
c906108c | 8100 | case DW_TAG_class_type: |
680b30c7 | 8101 | case DW_TAG_interface_type: |
c906108c | 8102 | case DW_TAG_structure_type: |
72bf9492 | 8103 | if (!pdi->is_declaration) |
c906108c | 8104 | { |
72bf9492 | 8105 | add_partial_symbol (pdi, cu); |
c906108c | 8106 | } |
b7fee5a3 KS |
8107 | if ((cu->language == language_rust |
8108 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8109 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8110 | set_addrmap, cu); | |
c906108c | 8111 | break; |
91c24f0a | 8112 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8113 | if (!pdi->is_declaration) |
8114 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8115 | break; |
8116 | case DW_TAG_base_type: | |
a02abb62 | 8117 | case DW_TAG_subrange_type: |
c906108c | 8118 | /* File scope base type definitions are added to the partial |
c5aa993b | 8119 | symbol table. */ |
72bf9492 | 8120 | add_partial_symbol (pdi, cu); |
c906108c | 8121 | break; |
d9fa45fe | 8122 | case DW_TAG_namespace: |
cdc07690 | 8123 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8124 | break; |
5d7cb8df | 8125 | case DW_TAG_module: |
59c35742 AB |
8126 | if (!pdi->is_declaration) |
8127 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8128 | break; |
95554aad TT |
8129 | case DW_TAG_imported_unit: |
8130 | { | |
8131 | struct dwarf2_per_cu_data *per_cu; | |
8132 | ||
f4dc4d17 DE |
8133 | /* For now we don't handle imported units in type units. */ |
8134 | if (cu->per_cu->is_debug_types) | |
8135 | { | |
8136 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8137 | " supported in type units [in module %s]"), | |
5e22e966 | 8138 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8139 | } |
8140 | ||
e3b94546 | 8141 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8142 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8143 | |
8144 | /* Go read the partial unit, if needed. */ | |
8145 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8146 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8147 | cu->language); | |
95554aad | 8148 | |
ae640021 | 8149 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8150 | } |
8151 | break; | |
74921315 KS |
8152 | case DW_TAG_imported_declaration: |
8153 | add_partial_symbol (pdi, cu); | |
8154 | break; | |
c906108c SS |
8155 | default: |
8156 | break; | |
8157 | } | |
8158 | } | |
8159 | ||
72bf9492 DJ |
8160 | /* If the die has a sibling, skip to the sibling. */ |
8161 | ||
8162 | pdi = pdi->die_sibling; | |
8163 | } | |
8164 | } | |
8165 | ||
8166 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8167 | |
72bf9492 | 8168 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8169 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8170 | Enumerators are an exception; they use the scope of their parent |
8171 | enumeration type, i.e. the name of the enumeration type is not | |
8172 | prepended to the enumerator. | |
91c24f0a | 8173 | |
72bf9492 DJ |
8174 | There are two complexities. One is DW_AT_specification; in this |
8175 | case "parent" means the parent of the target of the specification, | |
8176 | instead of the direct parent of the DIE. The other is compilers | |
8177 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8178 | the fully qualified name of structure types from their members' | |
8179 | linkage names. This must be done using the DIE's children rather | |
8180 | than the children of any DW_AT_specification target. We only need | |
8181 | to do this for structures at the top level, i.e. if the target of | |
8182 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8183 | have a parent. */ | |
8184 | ||
8185 | /* Compute the scope prefix associated with PDI's parent, in | |
8186 | compilation unit CU. The result will be allocated on CU's | |
8187 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8188 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8189 | static const char * |
72bf9492 DJ |
8190 | partial_die_parent_scope (struct partial_die_info *pdi, |
8191 | struct dwarf2_cu *cu) | |
8192 | { | |
15d034d0 | 8193 | const char *grandparent_scope; |
72bf9492 | 8194 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8195 | |
72bf9492 DJ |
8196 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8197 | then this means the parent of the specification DIE. */ | |
8198 | ||
8199 | real_pdi = pdi; | |
72bf9492 | 8200 | while (real_pdi->has_specification) |
fb816e8b | 8201 | { |
122cf0f2 AB |
8202 | auto res = find_partial_die (real_pdi->spec_offset, |
8203 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8204 | real_pdi = res.pdi; |
8205 | cu = res.cu; | |
8206 | } | |
72bf9492 DJ |
8207 | |
8208 | parent = real_pdi->die_parent; | |
8209 | if (parent == NULL) | |
8210 | return NULL; | |
8211 | ||
8212 | if (parent->scope_set) | |
8213 | return parent->scope; | |
8214 | ||
52356b79 | 8215 | parent->fixup (cu); |
72bf9492 | 8216 | |
10b3939b | 8217 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8218 | |
acebe513 UW |
8219 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8220 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8221 | Work around this problem here. */ | |
8222 | if (cu->language == language_cplus | |
6e70227d | 8223 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8224 | && strcmp (parent->name, "::") == 0 |
8225 | && grandparent_scope == NULL) | |
8226 | { | |
8227 | parent->scope = NULL; | |
8228 | parent->scope_set = 1; | |
8229 | return NULL; | |
8230 | } | |
8231 | ||
0a4b0913 | 8232 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8233 | if (pdi->tag == DW_TAG_enumerator) |
8234 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8235 | parent->scope = grandparent_scope; | |
8236 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8237 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8238 | || parent->tag == DW_TAG_structure_type |
8239 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8240 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8241 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8242 | || parent->tag == DW_TAG_enumeration_type |
8243 | || (cu->language == language_fortran | |
8244 | && parent->tag == DW_TAG_subprogram | |
8245 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8246 | { |
8247 | if (grandparent_scope == NULL) | |
8248 | parent->scope = parent->name; | |
8249 | else | |
3e43a32a MS |
8250 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8251 | grandparent_scope, | |
f55ee35c | 8252 | parent->name, 0, cu); |
72bf9492 | 8253 | } |
72bf9492 DJ |
8254 | else |
8255 | { | |
8256 | /* FIXME drow/2004-04-01: What should we be doing with | |
8257 | function-local names? For partial symbols, we should probably be | |
8258 | ignoring them. */ | |
fa9c3fa0 TT |
8259 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8260 | dwarf_tag_name (parent->tag), | |
8261 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8262 | parent->scope = grandparent_scope; |
c906108c SS |
8263 | } |
8264 | ||
72bf9492 DJ |
8265 | parent->scope_set = 1; |
8266 | return parent->scope; | |
8267 | } | |
8268 | ||
8269 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8270 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8271 | |
43816ebc | 8272 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8273 | partial_die_full_name (struct partial_die_info *pdi, |
8274 | struct dwarf2_cu *cu) | |
8275 | { | |
15d034d0 | 8276 | const char *parent_scope; |
72bf9492 | 8277 | |
98bfdba5 PA |
8278 | /* If this is a template instantiation, we can not work out the |
8279 | template arguments from partial DIEs. So, unfortunately, we have | |
8280 | to go through the full DIEs. At least any work we do building | |
8281 | types here will be reused if full symbols are loaded later. */ | |
8282 | if (pdi->has_template_arguments) | |
8283 | { | |
52356b79 | 8284 | pdi->fixup (cu); |
98bfdba5 PA |
8285 | |
8286 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8287 | { | |
8288 | struct die_info *die; | |
8289 | struct attribute attr; | |
8290 | struct dwarf2_cu *ref_cu = cu; | |
8291 | ||
b64f50a1 | 8292 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8293 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8294 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8295 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8296 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8297 | ||
43816ebc | 8298 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8299 | } |
8300 | } | |
8301 | ||
72bf9492 DJ |
8302 | parent_scope = partial_die_parent_scope (pdi, cu); |
8303 | if (parent_scope == NULL) | |
8304 | return NULL; | |
8305 | else | |
43816ebc TT |
8306 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8307 | pdi->name, 0, cu)); | |
c906108c SS |
8308 | } |
8309 | ||
8310 | static void | |
72bf9492 | 8311 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8312 | { |
5e22e966 | 8313 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 8314 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 8315 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8316 | CORE_ADDR addr = 0; |
15d034d0 | 8317 | const char *actual_name = NULL; |
e142c38c DJ |
8318 | CORE_ADDR baseaddr; |
8319 | ||
b3b3bada | 8320 | baseaddr = objfile->text_section_offset (); |
c906108c | 8321 | |
43816ebc TT |
8322 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8323 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8324 | if (built_actual_name != NULL) |
43816ebc | 8325 | actual_name = built_actual_name.get (); |
63d06c5c | 8326 | |
72bf9492 DJ |
8327 | if (actual_name == NULL) |
8328 | actual_name = pdi->name; | |
8329 | ||
76e288d1 TT |
8330 | partial_symbol psymbol; |
8331 | memset (&psymbol, 0, sizeof (psymbol)); | |
8332 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8333 | psymbol.ginfo.section = -1; | |
8334 | ||
8335 | /* The code below indicates that the psymbol should be installed by | |
8336 | setting this. */ | |
8337 | gdb::optional<psymbol_placement> where; | |
8338 | ||
c906108c SS |
8339 | switch (pdi->tag) |
8340 | { | |
b1dc1806 | 8341 | case DW_TAG_inlined_subroutine: |
c906108c | 8342 | case DW_TAG_subprogram: |
79748972 TT |
8343 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8344 | - baseaddr); | |
0a4b0913 AB |
8345 | if (pdi->is_external |
8346 | || cu->language == language_ada | |
8347 | || (cu->language == language_fortran | |
8348 | && pdi->die_parent != NULL | |
8349 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8350 | { | |
8351 | /* Normally, only "external" DIEs are part of the global scope. | |
8352 | But in Ada and Fortran, we want to be able to access nested | |
8353 | procedures globally. So all Ada and Fortran subprograms are | |
8354 | stored in the global scope. */ | |
76e288d1 | 8355 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8356 | } |
8357 | else | |
76e288d1 TT |
8358 | where = psymbol_placement::STATIC; |
8359 | ||
8360 | psymbol.domain = VAR_DOMAIN; | |
8361 | psymbol.aclass = LOC_BLOCK; | |
8362 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8363 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8364 | |
8365 | if (pdi->main_subprogram && actual_name != NULL) | |
8366 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8367 | break; |
72929c62 | 8368 | case DW_TAG_constant: |
76e288d1 TT |
8369 | psymbol.domain = VAR_DOMAIN; |
8370 | psymbol.aclass = LOC_STATIC; | |
8371 | where = (pdi->is_external | |
8372 | ? psymbol_placement::GLOBAL | |
8373 | : psymbol_placement::STATIC); | |
72929c62 | 8374 | break; |
c906108c | 8375 | case DW_TAG_variable: |
95554aad TT |
8376 | if (pdi->d.locdesc) |
8377 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8378 | |
95554aad | 8379 | if (pdi->d.locdesc |
caac4577 | 8380 | && addr == 0 |
5989a64e | 8381 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8382 | { |
8383 | /* A global or static variable may also have been stripped | |
8384 | out by the linker if unused, in which case its address | |
8385 | will be nullified; do not add such variables into partial | |
8386 | symbol table then. */ | |
8387 | } | |
8388 | else if (pdi->is_external) | |
c906108c SS |
8389 | { |
8390 | /* Global Variable. | |
8391 | Don't enter into the minimal symbol tables as there is | |
8392 | a minimal symbol table entry from the ELF symbols already. | |
8393 | Enter into partial symbol table if it has a location | |
8394 | descriptor or a type. | |
8395 | If the location descriptor is missing, new_symbol will create | |
8396 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8397 | be determined from the minimal symbol table whenever the variable | |
8398 | is referenced. | |
8399 | The address for the partial symbol table entry is not | |
8400 | used by GDB, but it comes in handy for debugging partial symbol | |
8401 | table building. */ | |
8402 | ||
95554aad | 8403 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8404 | { |
8405 | psymbol.domain = VAR_DOMAIN; | |
8406 | psymbol.aclass = LOC_STATIC; | |
8407 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8408 | psymbol.ginfo.value.address = addr; | |
8409 | where = psymbol_placement::GLOBAL; | |
8410 | } | |
c906108c SS |
8411 | } |
8412 | else | |
8413 | { | |
ff908ebf AW |
8414 | int has_loc = pdi->d.locdesc != NULL; |
8415 | ||
8416 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8417 | without location descriptors or constant values). */ | |
8418 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8419 | return; |
ff908ebf | 8420 | |
76e288d1 TT |
8421 | psymbol.domain = VAR_DOMAIN; |
8422 | psymbol.aclass = LOC_STATIC; | |
8423 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8424 | if (has_loc) | |
8425 | psymbol.ginfo.value.address = addr; | |
8426 | where = psymbol_placement::STATIC; | |
c906108c SS |
8427 | } |
8428 | break; | |
8429 | case DW_TAG_typedef: | |
8430 | case DW_TAG_base_type: | |
a02abb62 | 8431 | case DW_TAG_subrange_type: |
76e288d1 TT |
8432 | psymbol.domain = VAR_DOMAIN; |
8433 | psymbol.aclass = LOC_TYPEDEF; | |
8434 | where = psymbol_placement::STATIC; | |
c906108c | 8435 | break; |
74921315 | 8436 | case DW_TAG_imported_declaration: |
72bf9492 | 8437 | case DW_TAG_namespace: |
76e288d1 TT |
8438 | psymbol.domain = VAR_DOMAIN; |
8439 | psymbol.aclass = LOC_TYPEDEF; | |
8440 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8441 | break; |
530e8392 | 8442 | case DW_TAG_module: |
a5fd13a9 BH |
8443 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8444 | available without any name. If so, we skip the module as it | |
8445 | doesn't bring any value. */ | |
8446 | if (actual_name != nullptr) | |
76e288d1 TT |
8447 | { |
8448 | psymbol.domain = MODULE_DOMAIN; | |
8449 | psymbol.aclass = LOC_TYPEDEF; | |
8450 | where = psymbol_placement::GLOBAL; | |
8451 | } | |
530e8392 | 8452 | break; |
c906108c | 8453 | case DW_TAG_class_type: |
680b30c7 | 8454 | case DW_TAG_interface_type: |
c906108c SS |
8455 | case DW_TAG_structure_type: |
8456 | case DW_TAG_union_type: | |
8457 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8458 | /* Skip external references. The DWARF standard says in the section |
8459 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8460 | structure, union or class type is represented by a structure, | |
8461 | union or class entry that does not have a byte size attribute | |
8462 | and that has a DW_AT_declaration attribute." */ | |
8463 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8464 | return; |
fa4028e9 | 8465 | |
63d06c5c DC |
8466 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8467 | static vs. global. */ | |
76e288d1 TT |
8468 | psymbol.domain = STRUCT_DOMAIN; |
8469 | psymbol.aclass = LOC_TYPEDEF; | |
8470 | where = (cu->language == language_cplus | |
8471 | ? psymbol_placement::GLOBAL | |
8472 | : psymbol_placement::STATIC); | |
c906108c SS |
8473 | break; |
8474 | case DW_TAG_enumerator: | |
76e288d1 TT |
8475 | psymbol.domain = VAR_DOMAIN; |
8476 | psymbol.aclass = LOC_CONST; | |
8477 | where = (cu->language == language_cplus | |
8478 | ? psymbol_placement::GLOBAL | |
8479 | : psymbol_placement::STATIC); | |
c906108c SS |
8480 | break; |
8481 | default: | |
8482 | break; | |
8483 | } | |
76e288d1 TT |
8484 | |
8485 | if (where.has_value ()) | |
8486 | { | |
f049a313 TT |
8487 | if (built_actual_name != nullptr) |
8488 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8489 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8490 | psymbol.ginfo.set_linkage_name (actual_name); | |
8491 | else | |
8492 | { | |
8493 | psymbol.ginfo.set_demangled_name (actual_name, | |
8494 | &objfile->objfile_obstack); | |
8495 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8496 | } | |
76e288d1 TT |
8497 | add_psymbol_to_list (psymbol, *where, objfile); |
8498 | } | |
c906108c SS |
8499 | } |
8500 | ||
5c4e30ca DC |
8501 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8502 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8503 | the name of the enclosing namespace. */ | |
91c24f0a | 8504 | |
72bf9492 DJ |
8505 | static void |
8506 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8507 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8508 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8509 | { |
72bf9492 | 8510 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8511 | |
72bf9492 | 8512 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8513 | |
8514 | /* Now scan partial symbols in that namespace. */ | |
8515 | ||
91c24f0a | 8516 | if (pdi->has_children) |
cdc07690 | 8517 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8518 | } |
8519 | ||
5d7cb8df JK |
8520 | /* Read a partial die corresponding to a Fortran module. */ |
8521 | ||
8522 | static void | |
8523 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8524 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8525 | { |
530e8392 KB |
8526 | /* Add a symbol for the namespace. */ |
8527 | ||
8528 | add_partial_symbol (pdi, cu); | |
8529 | ||
f55ee35c | 8530 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8531 | |
8532 | if (pdi->has_children) | |
cdc07690 | 8533 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8534 | } |
8535 | ||
b1dc1806 XR |
8536 | /* Read a partial die corresponding to a subprogram or an inlined |
8537 | subprogram and create a partial symbol for that subprogram. | |
8538 | When the CU language allows it, this routine also defines a partial | |
8539 | symbol for each nested subprogram that this subprogram contains. | |
8540 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8541 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8542 | |
cdc07690 YQ |
8543 | PDI may also be a lexical block, in which case we simply search |
8544 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8545 | Again, this is only performed when the CU language allows this |
8546 | type of definitions. */ | |
8547 | ||
8548 | static void | |
8549 | add_partial_subprogram (struct partial_die_info *pdi, | |
8550 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8551 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8552 | { |
b1dc1806 | 8553 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8554 | { |
8555 | if (pdi->has_pc_info) | |
8556 | { | |
8557 | if (pdi->lowpc < *lowpc) | |
8558 | *lowpc = pdi->lowpc; | |
8559 | if (pdi->highpc > *highpc) | |
8560 | *highpc = pdi->highpc; | |
cdc07690 | 8561 | if (set_addrmap) |
5734ee8b | 8562 | { |
5e22e966 | 8563 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8564 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8565 | CORE_ADDR baseaddr; |
b926417a TT |
8566 | CORE_ADDR this_highpc; |
8567 | CORE_ADDR this_lowpc; | |
5734ee8b | 8568 | |
b3b3bada | 8569 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8570 | this_lowpc |
8571 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8572 | pdi->lowpc + baseaddr) | |
8573 | - baseaddr); | |
8574 | this_highpc | |
8575 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8576 | pdi->highpc + baseaddr) | |
8577 | - baseaddr); | |
d320c2b5 | 8578 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8579 | this_lowpc, this_highpc - 1, |
9291a0cd | 8580 | cu->per_cu->v.psymtab); |
5734ee8b | 8581 | } |
481860b3 GB |
8582 | } |
8583 | ||
8584 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8585 | { | |
bc30ff58 | 8586 | if (!pdi->is_declaration) |
e8d05480 JB |
8587 | /* Ignore subprogram DIEs that do not have a name, they are |
8588 | illegal. Do not emit a complaint at this point, we will | |
8589 | do so when we convert this psymtab into a symtab. */ | |
8590 | if (pdi->name) | |
8591 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8592 | } |
8593 | } | |
6e70227d | 8594 | |
bc30ff58 JB |
8595 | if (! pdi->has_children) |
8596 | return; | |
8597 | ||
0a4b0913 | 8598 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8599 | { |
8600 | pdi = pdi->die_child; | |
8601 | while (pdi != NULL) | |
8602 | { | |
52356b79 | 8603 | pdi->fixup (cu); |
bc30ff58 | 8604 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8605 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8606 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8607 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8608 | pdi = pdi->die_sibling; |
8609 | } | |
8610 | } | |
8611 | } | |
8612 | ||
91c24f0a DC |
8613 | /* Read a partial die corresponding to an enumeration type. */ |
8614 | ||
72bf9492 DJ |
8615 | static void |
8616 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8617 | struct dwarf2_cu *cu) | |
91c24f0a | 8618 | { |
72bf9492 | 8619 | struct partial_die_info *pdi; |
91c24f0a DC |
8620 | |
8621 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8622 | add_partial_symbol (enum_pdi, cu); |
8623 | ||
8624 | pdi = enum_pdi->die_child; | |
8625 | while (pdi) | |
91c24f0a | 8626 | { |
72bf9492 | 8627 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8628 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8629 | else |
72bf9492 DJ |
8630 | add_partial_symbol (pdi, cu); |
8631 | pdi = pdi->die_sibling; | |
91c24f0a | 8632 | } |
91c24f0a DC |
8633 | } |
8634 | ||
6caca83c CC |
8635 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8636 | ||
8637 | static unsigned int | |
d521ce57 | 8638 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8639 | { |
8640 | unsigned int bytes_read; | |
8641 | ||
8642 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8643 | } | |
8644 | ||
685af9cd TT |
8645 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8646 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8647 | ||
4bb7a0a7 DJ |
8648 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8649 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8650 | the initial number. */ | |
8651 | ||
8652 | static struct abbrev_info * | |
685af9cd TT |
8653 | peek_die_abbrev (const die_reader_specs &reader, |
8654 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8655 | { |
685af9cd | 8656 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8657 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8658 | unsigned int abbrev_number |
8659 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8660 | |
8661 | if (abbrev_number == 0) | |
8662 | return NULL; | |
8663 | ||
685af9cd | 8664 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8665 | if (!abbrev) |
8666 | { | |
422b9917 | 8667 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8668 | " at offset %s [in module %s]"), |
422b9917 | 8669 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8670 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8671 | } |
8672 | ||
8673 | return abbrev; | |
8674 | } | |
8675 | ||
93311388 DE |
8676 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8677 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8678 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8679 | ||
d521ce57 TT |
8680 | static const gdb_byte * |
8681 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8682 | { |
4bb7a0a7 DJ |
8683 | while (1) |
8684 | { | |
685af9cd TT |
8685 | unsigned int bytes_read; |
8686 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8687 | ||
4bb7a0a7 DJ |
8688 | if (abbrev == NULL) |
8689 | return info_ptr + bytes_read; | |
8690 | else | |
dee91e82 | 8691 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8692 | } |
8693 | } | |
8694 | ||
93311388 DE |
8695 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8696 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8697 | abbrev corresponding to that skipped uleb128 should be passed in |
8698 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8699 | children. */ | |
8700 | ||
d521ce57 TT |
8701 | static const gdb_byte * |
8702 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8703 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8704 | { |
8705 | unsigned int bytes_read; | |
8706 | struct attribute attr; | |
dee91e82 DE |
8707 | bfd *abfd = reader->abfd; |
8708 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8709 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8710 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8711 | unsigned int form, i; |
8712 | ||
8713 | for (i = 0; i < abbrev->num_attrs; i++) | |
8714 | { | |
8715 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8716 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8717 | { | |
18a8505e AT |
8718 | bool ignored; |
8719 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8720 | &ignored); | |
4bb7a0a7 | 8721 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8722 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8723 | else |
b9502d3f | 8724 | { |
0826b30a | 8725 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8726 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8727 | |
8728 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8729 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8730 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8731 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8732 | else |
8733 | return sibling_ptr; | |
8734 | } | |
4bb7a0a7 DJ |
8735 | } |
8736 | ||
8737 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8738 | form = abbrev->attrs[i].form; | |
8739 | skip_attribute: | |
8740 | switch (form) | |
8741 | { | |
4bb7a0a7 | 8742 | case DW_FORM_ref_addr: |
ae411497 TT |
8743 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8744 | and later it is offset sized. */ | |
8745 | if (cu->header.version == 2) | |
8746 | info_ptr += cu->header.addr_size; | |
8747 | else | |
8748 | info_ptr += cu->header.offset_size; | |
8749 | break; | |
36586728 TT |
8750 | case DW_FORM_GNU_ref_alt: |
8751 | info_ptr += cu->header.offset_size; | |
8752 | break; | |
ae411497 | 8753 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8754 | info_ptr += cu->header.addr_size; |
8755 | break; | |
8756 | case DW_FORM_data1: | |
8757 | case DW_FORM_ref1: | |
8758 | case DW_FORM_flag: | |
8fe0f950 | 8759 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8760 | info_ptr += 1; |
8761 | break; | |
2dc7f7b3 | 8762 | case DW_FORM_flag_present: |
43988095 | 8763 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8764 | break; |
4bb7a0a7 DJ |
8765 | case DW_FORM_data2: |
8766 | case DW_FORM_ref2: | |
8fe0f950 | 8767 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8768 | info_ptr += 2; |
8769 | break; | |
8fe0f950 AT |
8770 | case DW_FORM_strx3: |
8771 | info_ptr += 3; | |
8772 | break; | |
4bb7a0a7 DJ |
8773 | case DW_FORM_data4: |
8774 | case DW_FORM_ref4: | |
8fe0f950 | 8775 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8776 | info_ptr += 4; |
8777 | break; | |
8778 | case DW_FORM_data8: | |
8779 | case DW_FORM_ref8: | |
55f1336d | 8780 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8781 | info_ptr += 8; |
8782 | break; | |
0224619f JK |
8783 | case DW_FORM_data16: |
8784 | info_ptr += 16; | |
8785 | break; | |
4bb7a0a7 | 8786 | case DW_FORM_string: |
9b1c24c8 | 8787 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8788 | info_ptr += bytes_read; |
8789 | break; | |
2dc7f7b3 | 8790 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8791 | case DW_FORM_strp: |
36586728 | 8792 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8793 | info_ptr += cu->header.offset_size; |
8794 | break; | |
2dc7f7b3 | 8795 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8796 | case DW_FORM_block: |
8797 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8798 | info_ptr += bytes_read; | |
8799 | break; | |
8800 | case DW_FORM_block1: | |
8801 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8802 | break; | |
8803 | case DW_FORM_block2: | |
8804 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8805 | break; | |
8806 | case DW_FORM_block4: | |
8807 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8808 | break; | |
336d760d | 8809 | case DW_FORM_addrx: |
cf532bd1 | 8810 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8811 | case DW_FORM_sdata: |
8812 | case DW_FORM_udata: | |
8813 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8814 | case DW_FORM_GNU_addr_index: |
8815 | case DW_FORM_GNU_str_index: | |
18a8505e | 8816 | case DW_FORM_rnglistx: |
41144253 | 8817 | case DW_FORM_loclistx: |
d521ce57 | 8818 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8819 | break; |
8820 | case DW_FORM_indirect: | |
8821 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8822 | info_ptr += bytes_read; | |
8823 | /* We need to continue parsing from here, so just go back to | |
8824 | the top. */ | |
8825 | goto skip_attribute; | |
8826 | ||
8827 | default: | |
3e43a32a MS |
8828 | error (_("Dwarf Error: Cannot handle %s " |
8829 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8830 | dwarf_form_name (form), |
8831 | bfd_get_filename (abfd)); | |
8832 | } | |
8833 | } | |
8834 | ||
8835 | if (abbrev->has_children) | |
dee91e82 | 8836 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8837 | else |
8838 | return info_ptr; | |
8839 | } | |
8840 | ||
93311388 | 8841 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8842 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8843 | |
d521ce57 | 8844 | static const gdb_byte * |
dee91e82 DE |
8845 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8846 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8847 | const gdb_byte *info_ptr) |
91c24f0a DC |
8848 | { |
8849 | /* Do we know the sibling already? */ | |
72bf9492 | 8850 | |
91c24f0a DC |
8851 | if (orig_pdi->sibling) |
8852 | return orig_pdi->sibling; | |
8853 | ||
8854 | /* Are there any children to deal with? */ | |
8855 | ||
8856 | if (!orig_pdi->has_children) | |
8857 | return info_ptr; | |
8858 | ||
4bb7a0a7 | 8859 | /* Skip the children the long way. */ |
91c24f0a | 8860 | |
dee91e82 | 8861 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8862 | } |
8863 | ||
257e7a09 | 8864 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8865 | not NULL. */ |
c906108c | 8866 | |
891813be TT |
8867 | void |
8868 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8869 | { |
ed2dc618 SM |
8870 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8871 | = get_dwarf2_per_objfile (objfile); | |
8872 | ||
af758d11 SM |
8873 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (per_cu_data)); |
8874 | ||
077cbab2 TT |
8875 | /* If this psymtab is constructed from a debug-only objfile, the |
8876 | has_section_at_zero flag will not necessarily be correct. We | |
8877 | can get the correct value for this flag by looking at the data | |
8878 | associated with the (presumably stripped) associated objfile. */ | |
8879 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8880 | { |
077cbab2 TT |
8881 | struct dwarf2_per_objfile *dpo_backlink |
8882 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8883 | |
5989a64e SM |
8884 | dwarf2_per_objfile->per_bfd->has_section_at_zero |
8885 | = dpo_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8886 | } |
98bfdba5 | 8887 | |
8566b89b | 8888 | expand_psymtab (objfile); |
95554aad | 8889 | |
ed2dc618 | 8890 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8891 | } |
9cdd5dbd DE |
8892 | \f |
8893 | /* Reading in full CUs. */ | |
c906108c | 8894 | |
10b3939b DJ |
8895 | /* Add PER_CU to the queue. */ |
8896 | ||
8897 | static void | |
120ce1b5 SM |
8898 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
8899 | dwarf2_per_objfile *per_objfile, | |
95554aad | 8900 | enum language pretend_language) |
10b3939b | 8901 | { |
10b3939b | 8902 | per_cu->queued = 1; |
120ce1b5 | 8903 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
8904 | } |
8905 | ||
89e63ee4 DE |
8906 | /* If PER_CU is not yet queued, add it to the queue. |
8907 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8908 | dependency. | |
0907af0c | 8909 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8910 | meaning either PER_CU is already queued or it is already loaded. |
8911 | ||
8912 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8913 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8914 | |
8915 | static int | |
89e63ee4 | 8916 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
8917 | dwarf2_per_cu_data *per_cu, |
8918 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
8919 | enum language pretend_language) |
8920 | { | |
8921 | /* We may arrive here during partial symbol reading, if we need full | |
8922 | DIEs to process an unusual case (e.g. template arguments). Do | |
8923 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8924 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 8925 | { |
7188ed02 SM |
8926 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8927 | ||
8928 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
8929 | return 1; |
8930 | return 0; | |
8931 | } | |
8932 | ||
8933 | /* Mark the dependence relation so that we don't flush PER_CU | |
8934 | too early. */ | |
89e63ee4 DE |
8935 | if (dependent_cu != NULL) |
8936 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8937 | |
8938 | /* If it's already on the queue, we have nothing to do. */ | |
8939 | if (per_cu->queued) | |
8940 | return 0; | |
8941 | ||
8942 | /* If the compilation unit is already loaded, just mark it as | |
8943 | used. */ | |
7188ed02 SM |
8944 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
8945 | if (cu != nullptr) | |
0907af0c | 8946 | { |
7188ed02 | 8947 | cu->last_used = 0; |
0907af0c DE |
8948 | return 0; |
8949 | } | |
8950 | ||
8951 | /* Add it to the queue. */ | |
120ce1b5 | 8952 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
8953 | |
8954 | return 1; | |
8955 | } | |
8956 | ||
10b3939b DJ |
8957 | /* Process the queue. */ |
8958 | ||
8959 | static void | |
ed2dc618 | 8960 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8961 | { |
b4f54984 | 8962 | if (dwarf_read_debug) |
45cfd468 DE |
8963 | { |
8964 | fprintf_unfiltered (gdb_stdlog, | |
8965 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8966 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8967 | } |
8968 | ||
03dd20cc DJ |
8969 | /* The queue starts out with one item, but following a DIE reference |
8970 | may load a new CU, adding it to the end of the queue. */ | |
5989a64e | 8971 | while (!dwarf2_per_objfile->per_bfd->queue.empty ()) |
10b3939b | 8972 | { |
5989a64e | 8973 | dwarf2_queue_item &item = dwarf2_per_objfile->per_bfd->queue.front (); |
7188ed02 | 8974 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 8975 | |
7188ed02 | 8976 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 8977 | { |
7188ed02 | 8978 | dwarf2_cu *cu = dwarf2_per_objfile->get_cu (per_cu); |
f4dc4d17 | 8979 | |
7188ed02 SM |
8980 | /* Skip dummy CUs. */ |
8981 | if (cu != nullptr) | |
73be47f5 | 8982 | { |
7188ed02 SM |
8983 | unsigned int debug_print_threshold; |
8984 | char buf[100]; | |
8985 | ||
8986 | if (per_cu->is_debug_types) | |
8987 | { | |
8988 | struct signatured_type *sig_type = | |
8989 | (struct signatured_type *) per_cu; | |
8990 | ||
8991 | sprintf (buf, "TU %s at offset %s", | |
8992 | hex_string (sig_type->signature), | |
8993 | sect_offset_str (per_cu->sect_off)); | |
8994 | /* There can be 100s of TUs. | |
8995 | Only print them in verbose mode. */ | |
8996 | debug_print_threshold = 2; | |
8997 | } | |
8998 | else | |
8999 | { | |
9000 | sprintf (buf, "CU at offset %s", | |
9001 | sect_offset_str (per_cu->sect_off)); | |
9002 | debug_print_threshold = 1; | |
9003 | } | |
247f5c4f | 9004 | |
7188ed02 SM |
9005 | if (dwarf_read_debug >= debug_print_threshold) |
9006 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 | 9007 | |
7188ed02 SM |
9008 | if (per_cu->is_debug_types) |
9009 | process_full_type_unit (cu, item.pretend_language); | |
9010 | else | |
9011 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9012 | |
7188ed02 SM |
9013 | if (dwarf_read_debug >= debug_print_threshold) |
9014 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); | |
9015 | } | |
f4dc4d17 | 9016 | } |
10b3939b | 9017 | |
7188ed02 | 9018 | per_cu->queued = 0; |
5989a64e | 9019 | dwarf2_per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9020 | } |
9021 | ||
b4f54984 | 9022 | if (dwarf_read_debug) |
45cfd468 DE |
9023 | { |
9024 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9025 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9026 | } |
10b3939b DJ |
9027 | } |
9028 | ||
10b3939b DJ |
9029 | /* Read in full symbols for PST, and anything it depends on. */ |
9030 | ||
8566b89b TT |
9031 | void |
9032 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9033 | { |
af758d11 | 9034 | gdb_assert (!readin_p (objfile)); |
95554aad | 9035 | |
48993951 | 9036 | expand_dependencies (objfile); |
aaa75496 | 9037 | |
97a1449a SM |
9038 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9039 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); | |
5717c425 | 9040 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9041 | } |
9042 | ||
af758d11 SM |
9043 | /* See psympriv.h. */ |
9044 | ||
9045 | bool | |
9046 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9047 | { | |
9048 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9049 | return per_objfile->symtab_set_p (per_cu_data); | |
9050 | } | |
9051 | ||
9052 | /* See psympriv.h. */ | |
9053 | ||
9054 | compunit_symtab * | |
9055 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9056 | { | |
9057 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9058 | return per_objfile->get_symtab (per_cu_data); | |
9059 | } | |
9060 | ||
dee91e82 DE |
9061 | /* Trivial hash function for die_info: the hash value of a DIE |
9062 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9063 | |
dee91e82 DE |
9064 | static hashval_t |
9065 | die_hash (const void *item) | |
10b3939b | 9066 | { |
9a3c8263 | 9067 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9068 | |
9c541725 | 9069 | return to_underlying (die->sect_off); |
dee91e82 | 9070 | } |
63d06c5c | 9071 | |
dee91e82 DE |
9072 | /* Trivial comparison function for die_info structures: two DIEs |
9073 | are equal if they have the same offset. */ | |
98bfdba5 | 9074 | |
dee91e82 DE |
9075 | static int |
9076 | die_eq (const void *item_lhs, const void *item_rhs) | |
9077 | { | |
9a3c8263 SM |
9078 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9079 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9080 | |
9c541725 | 9081 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9082 | } |
c906108c | 9083 | |
c0ab21c2 | 9084 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9085 | |
dee91e82 | 9086 | static void |
ab432490 SM |
9087 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9088 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9089 | bool skip_partial, |
9090 | enum language pretend_language) | |
dee91e82 | 9091 | { |
c0ab21c2 TT |
9092 | gdb_assert (! this_cu->is_debug_types); |
9093 | ||
7188ed02 SM |
9094 | dwarf2_cu *existing_cu = per_objfile->get_cu (this_cu); |
9095 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); | |
c0ab21c2 TT |
9096 | if (reader.dummy_p) |
9097 | return; | |
9098 | ||
9099 | struct dwarf2_cu *cu = reader.cu; | |
9100 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9101 | |
dee91e82 DE |
9102 | gdb_assert (cu->die_hash == NULL); |
9103 | cu->die_hash = | |
9104 | htab_create_alloc_ex (cu->header.length / 12, | |
9105 | die_hash, | |
9106 | die_eq, | |
9107 | NULL, | |
9108 | &cu->comp_unit_obstack, | |
9109 | hashtab_obstack_allocate, | |
9110 | dummy_obstack_deallocate); | |
e142c38c | 9111 | |
3e225074 | 9112 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9113 | reader.comp_unit_die->child |
9114 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9115 | &info_ptr, reader.comp_unit_die); | |
9116 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9117 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9118 | |
9119 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9120 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9121 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9122 | or we won't be able to build types correctly. |
9123 | Similarly, if we do not read the producer, we can not apply | |
9124 | producer-specific interpretation. */ | |
c0ab21c2 | 9125 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9126 | |
9127 | reader.keep (); | |
10b3939b DJ |
9128 | } |
9129 | ||
3da10d80 KS |
9130 | /* Add a DIE to the delayed physname list. */ |
9131 | ||
9132 | static void | |
9133 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9134 | const char *name, struct die_info *die, | |
9135 | struct dwarf2_cu *cu) | |
9136 | { | |
9137 | struct delayed_method_info mi; | |
9138 | mi.type = type; | |
9139 | mi.fnfield_index = fnfield_index; | |
9140 | mi.index = index; | |
9141 | mi.name = name; | |
9142 | mi.die = die; | |
c89b44cd | 9143 | cu->method_list.push_back (mi); |
3da10d80 KS |
9144 | } |
9145 | ||
3693fdb3 PA |
9146 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9147 | "const" / "volatile". If so, decrements LEN by the length of the | |
9148 | modifier and return true. Otherwise return false. */ | |
9149 | ||
9150 | template<size_t N> | |
9151 | static bool | |
9152 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9153 | { | |
9154 | size_t mod_len = sizeof (mod) - 1; | |
9155 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9156 | { | |
9157 | len -= mod_len; | |
9158 | return true; | |
9159 | } | |
9160 | return false; | |
9161 | } | |
9162 | ||
3da10d80 KS |
9163 | /* Compute the physnames of any methods on the CU's method list. |
9164 | ||
9165 | The computation of method physnames is delayed in order to avoid the | |
9166 | (bad) condition that one of the method's formal parameters is of an as yet | |
9167 | incomplete type. */ | |
9168 | ||
9169 | static void | |
9170 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9171 | { | |
3693fdb3 | 9172 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9173 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9174 | return; |
9175 | gdb_assert (cu->language == language_cplus); | |
9176 | ||
52941706 | 9177 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9178 | { |
1d06ead6 | 9179 | const char *physname; |
3da10d80 | 9180 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9181 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9182 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9183 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9184 | = physname ? physname : ""; |
3693fdb3 PA |
9185 | |
9186 | /* Since there's no tag to indicate whether a method is a | |
9187 | const/volatile overload, extract that information out of the | |
9188 | demangled name. */ | |
9189 | if (physname != NULL) | |
9190 | { | |
9191 | size_t len = strlen (physname); | |
9192 | ||
9193 | while (1) | |
9194 | { | |
9195 | if (physname[len] == ')') /* shortcut */ | |
9196 | break; | |
9197 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9198 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9199 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9200 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9201 | else |
9202 | break; | |
9203 | } | |
9204 | } | |
3da10d80 | 9205 | } |
c89b44cd TT |
9206 | |
9207 | /* The list is no longer needed. */ | |
9208 | cu->method_list.clear (); | |
3da10d80 KS |
9209 | } |
9210 | ||
a766d390 DE |
9211 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9212 | and it's not clear if/how imported objects will appear. | |
9213 | To keep Go support simple until that's worked out, | |
9214 | go back through what we've read and create something usable. | |
9215 | We could do this while processing each DIE, and feels kinda cleaner, | |
9216 | but that way is more invasive. | |
9217 | This is to, for example, allow the user to type "p var" or "b main" | |
9218 | without having to specify the package name, and allow lookups | |
9219 | of module.object to work in contexts that use the expression | |
9220 | parser. */ | |
9221 | ||
9222 | static void | |
9223 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9224 | { | |
421d1616 | 9225 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9226 | struct pending *list; |
9227 | int i; | |
9228 | ||
c24bdb02 | 9229 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9230 | list != NULL; |
9231 | list = list->next) | |
a766d390 DE |
9232 | { |
9233 | for (i = 0; i < list->nsyms; ++i) | |
9234 | { | |
9235 | struct symbol *sym = list->symbol[i]; | |
9236 | ||
c1b5c1eb | 9237 | if (sym->language () == language_go |
a766d390 DE |
9238 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9239 | { | |
421d1616 TT |
9240 | gdb::unique_xmalloc_ptr<char> this_package_name |
9241 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9242 | |
9243 | if (this_package_name == NULL) | |
9244 | continue; | |
9245 | if (package_name == NULL) | |
421d1616 | 9246 | package_name = std::move (this_package_name); |
a766d390 DE |
9247 | else |
9248 | { | |
5e22e966 | 9249 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9250 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9251 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9252 | (symbol_symtab (sym) != NULL |
9253 | ? symtab_to_filename_for_display | |
9254 | (symbol_symtab (sym)) | |
e3b94546 | 9255 | : objfile_name (objfile)), |
421d1616 | 9256 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9257 | } |
9258 | } | |
9259 | } | |
9260 | } | |
9261 | ||
9262 | if (package_name != NULL) | |
9263 | { | |
5e22e966 | 9264 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9265 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9266 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9267 | saved_package_name); | |
a766d390 DE |
9268 | struct symbol *sym; |
9269 | ||
8c14c3a3 | 9270 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9271 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9272 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9273 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9274 | e.g., "main" finds the "main" module and not C's main(). */ | |
9275 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9276 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9277 | SYMBOL_TYPE (sym) = type; |
9278 | ||
c24bdb02 | 9279 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9280 | } |
9281 | } | |
9282 | ||
c9317f21 TT |
9283 | /* Allocate a fully-qualified name consisting of the two parts on the |
9284 | obstack. */ | |
9285 | ||
9286 | static const char * | |
9287 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9288 | { | |
9289 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9290 | } | |
9291 | ||
9c6a1327 TT |
9292 | /* A helper that allocates a variant part to attach to a Rust enum |
9293 | type. OBSTACK is where the results should be allocated. TYPE is | |
9294 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9295 | discriminant. It must be the index of one of the fields of TYPE. | |
9296 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9297 | no default. RANGES is indexed by "effective" field number (the | |
9298 | field index, but omitting the discriminant and default fields) and | |
9299 | must hold the discriminant values used by the variants. Note that | |
9300 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9301 | already allocated on it, or static. */ | |
c9317f21 | 9302 | |
9c6a1327 TT |
9303 | static void |
9304 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9305 | int discriminant_index, int default_index, | |
9306 | gdb::array_view<discriminant_range> ranges) | |
9307 | { | |
9308 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9309 | must be handled by the caller. */ | |
9310 | gdb_assert (discriminant_index >= 0 | |
1f704f76 | 9311 | && discriminant_index < type->num_fields ()); |
c9317f21 | 9312 | gdb_assert (default_index == -1 |
1f704f76 | 9313 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9314 | |
9c6a1327 | 9315 | /* We have one variant for each non-discriminant field. */ |
1f704f76 | 9316 | int n_variants = type->num_fields () - 1; |
c9317f21 | 9317 | |
9c6a1327 TT |
9318 | variant *variants = new (obstack) variant[n_variants]; |
9319 | int var_idx = 0; | |
9320 | int range_idx = 0; | |
1f704f76 | 9321 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9322 | { |
9323 | if (i == discriminant_index) | |
9324 | continue; | |
c9317f21 | 9325 | |
9c6a1327 TT |
9326 | variants[var_idx].first_field = i; |
9327 | variants[var_idx].last_field = i + 1; | |
9328 | ||
9329 | /* The default field does not need a range, but other fields do. | |
9330 | We skipped the discriminant above. */ | |
9331 | if (i != default_index) | |
9332 | { | |
9333 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9334 | ++range_idx; | |
9335 | } | |
c9317f21 | 9336 | |
9c6a1327 TT |
9337 | ++var_idx; |
9338 | } | |
9339 | ||
9340 | gdb_assert (range_idx == ranges.size ()); | |
9341 | gdb_assert (var_idx == n_variants); | |
9342 | ||
9343 | variant_part *part = new (obstack) variant_part; | |
9344 | part->discriminant_index = discriminant_index; | |
9345 | part->is_unsigned = TYPE_UNSIGNED (TYPE_FIELD_TYPE (type, | |
9346 | discriminant_index)); | |
9347 | part->variants = gdb::array_view<variant> (variants, n_variants); | |
9348 | ||
9349 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9350 | gdb::array_view<variant_part> *prop_value | |
9351 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9352 | |
9c6a1327 TT |
9353 | struct dynamic_prop prop; |
9354 | prop.kind = PROP_VARIANT_PARTS; | |
9355 | prop.data.variant_parts = prop_value; | |
9356 | ||
5c54719c | 9357 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9358 | } |
9359 | ||
9360 | /* Some versions of rustc emitted enums in an unusual way. | |
9361 | ||
9362 | Ordinary enums were emitted as unions. The first element of each | |
9363 | structure in the union was named "RUST$ENUM$DISR". This element | |
9364 | held the discriminant. | |
9365 | ||
9366 | These versions of Rust also implemented the "non-zero" | |
9367 | optimization. When the enum had two values, and one is empty and | |
9368 | the other holds a pointer that cannot be zero, the pointer is used | |
9369 | as the discriminant, with a zero value meaning the empty variant. | |
9370 | Here, the union's first member is of the form | |
9371 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9372 | where the fieldnos are the indices of the fields that should be | |
9373 | traversed in order to find the field (which may be several fields deep) | |
9374 | and the variantname is the name of the variant of the case when the | |
9375 | field is zero. | |
9376 | ||
9377 | This function recognizes whether TYPE is of one of these forms, | |
9378 | and, if so, smashes it to be a variant type. */ | |
9379 | ||
9380 | static void | |
9381 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9382 | { | |
78134374 | 9383 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9384 | |
9385 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9386 | if (type->num_fields () == 0) |
c9317f21 TT |
9387 | return; |
9388 | ||
9389 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9390 | if (type->num_fields () == 1 |
c9317f21 TT |
9391 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9392 | { | |
9393 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9394 | ||
9395 | /* Decode the field name to find the offset of the | |
9396 | discriminant. */ | |
9397 | ULONGEST bit_offset = 0; | |
9398 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9399 | while (name[0] >= '0' && name[0] <= '9') | |
9400 | { | |
9401 | char *tail; | |
9402 | unsigned long index = strtoul (name, &tail, 10); | |
9403 | name = tail; | |
9404 | if (*name != '$' | |
1f704f76 | 9405 | || index >= field_type->num_fields () |
c9317f21 TT |
9406 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9407 | != FIELD_LOC_KIND_BITPOS)) | |
9408 | { | |
b98664d3 | 9409 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9410 | "[in module %s]"), |
9411 | TYPE_FIELD_NAME (type, 0), | |
9412 | objfile_name (objfile)); | |
9413 | return; | |
9414 | } | |
9415 | ++name; | |
9416 | ||
9417 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9418 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9419 | } | |
9420 | ||
9c6a1327 TT |
9421 | /* Smash this type to be a structure type. We have to do this |
9422 | because the type has already been recorded. */ | |
67607e24 | 9423 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9424 | type->set_num_fields (3); |
9c6a1327 | 9425 | /* Save the field we care about. */ |
ceacbf6e | 9426 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9427 | type->set_fields |
9428 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9429 | |
9c6a1327 TT |
9430 | /* Put the discriminant at index 0. */ |
9431 | TYPE_FIELD_TYPE (type, 0) = field_type; | |
9432 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; | |
9433 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9434 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9435 | |
9436 | /* The order of fields doesn't really matter, so put the real | |
9437 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9438 | type->field (1) = saved_field; |
9c6a1327 | 9439 | TYPE_FIELD_NAME (type, 1) |
7d93a1e0 | 9440 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, 1)->name ()); |
d0e39ea2 | 9441 | TYPE_FIELD_TYPE (type, 1)->set_name |
7d93a1e0 | 9442 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9443 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9444 | |
9445 | const char *dataless_name | |
7d93a1e0 | 9446 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9447 | name); |
9448 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9449 | dataless_name); | |
9c6a1327 | 9450 | TYPE_FIELD_TYPE (type, 2) = dataless_type; |
c9317f21 TT |
9451 | /* NAME points into the original discriminant name, which |
9452 | already has the correct lifetime. */ | |
9c6a1327 | 9453 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9454 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9455 | |
9c6a1327 TT |
9456 | /* Indicate that this is a variant type. */ |
9457 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9458 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9459 | } |
77c2dba3 TT |
9460 | /* A union with a single anonymous field is probably an old-style |
9461 | univariant enum. */ | |
1f704f76 | 9462 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9463 | { |
c9317f21 TT |
9464 | /* Smash this type to be a structure type. We have to do this |
9465 | because the type has already been recorded. */ | |
67607e24 | 9466 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9467 | |
9c6a1327 | 9468 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); |
c9317f21 | 9469 | const char *variant_name |
7d93a1e0 | 9470 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9471 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9472 | field_type->set_name |
9473 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9474 | type->name (), variant_name)); |
c9317f21 TT |
9475 | } |
9476 | else | |
9477 | { | |
9478 | struct type *disr_type = nullptr; | |
1f704f76 | 9479 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 TT |
9480 | { |
9481 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9482 | ||
78134374 | 9483 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9484 | { |
9485 | /* All fields of a true enum will be structs. */ | |
9486 | return; | |
9487 | } | |
1f704f76 | 9488 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9489 | { |
9490 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9491 | disr_type = nullptr; |
c9317f21 TT |
9492 | } |
9493 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9494 | "RUST$ENUM$DISR") != 0) | |
9495 | { | |
9496 | /* Not a Rust enum. */ | |
9497 | return; | |
9498 | } | |
9499 | else | |
9500 | { | |
9501 | /* Found one. */ | |
9502 | break; | |
9503 | } | |
9504 | } | |
9505 | ||
9506 | /* If we got here without a discriminant, then it's probably | |
9507 | just a union. */ | |
9508 | if (disr_type == nullptr) | |
9509 | return; | |
9510 | ||
9511 | /* Smash this type to be a structure type. We have to do this | |
9512 | because the type has already been recorded. */ | |
67607e24 | 9513 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9514 | |
9c6a1327 | 9515 | /* Make space for the discriminant field. */ |
ceacbf6e | 9516 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9517 | field *new_fields |
1f704f76 | 9518 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9519 | * sizeof (struct field))); |
80fc5e77 | 9520 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9521 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9522 | type->set_fields (new_fields); |
1f704f76 | 9523 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9524 | |
9525 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9526 | type->field (0) = *disr_field; |
9c6a1327 TT |
9527 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9528 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9529 | |
9530 | /* We need a way to find the correct discriminant given a | |
9531 | variant name. For convenience we build a map here. */ | |
9532 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9533 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
1f704f76 | 9534 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9535 | { |
9536 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9537 | { | |
9538 | const char *name | |
9539 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9540 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9541 | } | |
9542 | } | |
9543 | ||
1f704f76 | 9544 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9545 | /* We don't need a range entry for the discriminant, but we do |
9546 | need one for every other field, as there is no default | |
9547 | variant. */ | |
9548 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9549 | discriminant_range, | |
9550 | n_fields - 1); | |
c9317f21 TT |
9551 | /* Skip the discriminant here. */ |
9552 | for (int i = 1; i < n_fields; ++i) | |
9553 | { | |
9554 | /* Find the final word in the name of this variant's type. | |
9555 | That name can be used to look up the correct | |
9556 | discriminant. */ | |
9557 | const char *variant_name | |
7d93a1e0 | 9558 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, i)->name ()); |
c9317f21 TT |
9559 | |
9560 | auto iter = discriminant_map.find (variant_name); | |
9561 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9562 | { |
9563 | ranges[i].low = iter->second; | |
9564 | ranges[i].high = iter->second; | |
9565 | } | |
c9317f21 | 9566 | |
bedda9ac | 9567 | /* Remove the discriminant field, if it exists. */ |
9c6a1327 | 9568 | struct type *sub_type = TYPE_FIELD_TYPE (type, i); |
1f704f76 | 9569 | if (sub_type->num_fields () > 0) |
bedda9ac | 9570 | { |
5e33d5f4 | 9571 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9572 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9573 | } |
9c6a1327 | 9574 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9575 | sub_type->set_name |
9576 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9577 | type->name (), variant_name)); |
c9317f21 | 9578 | } |
9c6a1327 TT |
9579 | |
9580 | /* Indicate that this is a variant type. */ | |
9581 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9582 | gdb::array_view<discriminant_range> (ranges, | |
9583 | n_fields - 1)); | |
c9317f21 TT |
9584 | } |
9585 | } | |
9586 | ||
9587 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9588 | ||
9589 | static void | |
9590 | rust_union_quirks (struct dwarf2_cu *cu) | |
9591 | { | |
9592 | gdb_assert (cu->language == language_rust); | |
52941706 | 9593 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9594 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9595 | /* We don't need this any more. */ |
9596 | cu->rust_unions.clear (); | |
c9317f21 TT |
9597 | } |
9598 | ||
8adb8487 TT |
9599 | /* See read.h. */ |
9600 | ||
9601 | type_unit_group_unshareable * | |
9602 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9603 | { | |
9604 | auto iter = this->m_type_units.find (tu_group); | |
9605 | if (iter != this->m_type_units.end ()) | |
9606 | return iter->second.get (); | |
9607 | ||
9608 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9609 | type_unit_group_unshareable *result = uniq.get (); | |
9610 | this->m_type_units[tu_group] = std::move (uniq); | |
9611 | return result; | |
9612 | } | |
9613 | ||
e286671b TT |
9614 | struct type * |
9615 | dwarf2_per_objfile::get_type_for_signatured_type | |
9616 | (signatured_type *sig_type) const | |
9617 | { | |
9618 | auto iter = this->m_type_map.find (sig_type); | |
9619 | if (iter == this->m_type_map.end ()) | |
9620 | return nullptr; | |
9621 | ||
9622 | return iter->second; | |
9623 | } | |
9624 | ||
9625 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9626 | (signatured_type *sig_type, struct type *type) | |
9627 | { | |
9628 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9629 | ||
9630 | this->m_type_map[sig_type] = type; | |
9631 | } | |
9632 | ||
95554aad TT |
9633 | /* A helper function for computing the list of all symbol tables |
9634 | included by PER_CU. */ | |
9635 | ||
9636 | static void | |
4c39bc03 | 9637 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9638 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9639 | dwarf2_per_cu_data *per_cu, |
9640 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9641 | struct compunit_symtab *immediate_parent) |
95554aad | 9642 | { |
af758d11 | 9643 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9644 | if (*slot != NULL) |
9645 | { | |
9646 | /* This inclusion and its children have been processed. */ | |
9647 | return; | |
9648 | } | |
9649 | ||
9650 | *slot = per_cu; | |
af758d11 | 9651 | |
95554aad | 9652 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9653 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9654 | if (cust != NULL) |
ec94af83 DE |
9655 | { |
9656 | /* If this is a type unit only add its symbol table if we haven't | |
9657 | seen it yet (type unit per_cu's can share symtabs). */ | |
9658 | if (per_cu->is_debug_types) | |
9659 | { | |
43f3e411 | 9660 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9661 | if (*slot == NULL) |
9662 | { | |
43f3e411 | 9663 | *slot = cust; |
4c39bc03 | 9664 | result->push_back (cust); |
43f3e411 DE |
9665 | if (cust->user == NULL) |
9666 | cust->user = immediate_parent; | |
ec94af83 DE |
9667 | } |
9668 | } | |
9669 | else | |
f9125b6c | 9670 | { |
4c39bc03 | 9671 | result->push_back (cust); |
43f3e411 DE |
9672 | if (cust->user == NULL) |
9673 | cust->user = immediate_parent; | |
f9125b6c | 9674 | } |
ec94af83 | 9675 | } |
95554aad | 9676 | |
ae640021 AB |
9677 | if (!per_cu->imported_symtabs_empty ()) |
9678 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9679 | { | |
9680 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9681 | all_type_symtabs, ptr, per_objfile, |
9682 | cust); | |
ae640021 | 9683 | } |
95554aad TT |
9684 | } |
9685 | ||
43f3e411 | 9686 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9687 | PER_CU. */ |
9688 | ||
9689 | static void | |
43182c09 SM |
9690 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9691 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9692 | { |
f4dc4d17 DE |
9693 | gdb_assert (! per_cu->is_debug_types); |
9694 | ||
ae640021 | 9695 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9696 | { |
ae640021 | 9697 | int len; |
4c39bc03 | 9698 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9699 | htab_t all_children, all_type_symtabs; |
43182c09 | 9700 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9701 | |
9702 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9703 | if (cust == NULL) |
95554aad TT |
9704 | return; |
9705 | ||
9706 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9707 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9708 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9709 | NULL, xcalloc, xfree); | |
95554aad | 9710 | |
ae640021 | 9711 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9712 | { |
9713 | recursively_compute_inclusions (&result_symtabs, all_children, | |
43182c09 SM |
9714 | all_type_symtabs, ptr, per_objfile, |
9715 | cust); | |
ec94af83 | 9716 | } |
95554aad | 9717 | |
ec94af83 | 9718 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9719 | len = result_symtabs.size (); |
43f3e411 | 9720 | cust->includes |
f6e649dd | 9721 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9722 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9723 | memcpy (cust->includes, result_symtabs.data (), |
9724 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9725 | cust->includes[len] = NULL; |
95554aad | 9726 | |
95554aad | 9727 | htab_delete (all_children); |
ec94af83 | 9728 | htab_delete (all_type_symtabs); |
95554aad TT |
9729 | } |
9730 | } | |
9731 | ||
9732 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9733 | read. */ | |
9734 | ||
9735 | static void | |
ed2dc618 | 9736 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9737 | { |
5989a64e | 9738 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9739 | { |
9740 | if (! iter->is_debug_types) | |
43182c09 | 9741 | compute_compunit_symtab_includes (iter, dwarf2_per_objfile); |
f4dc4d17 | 9742 | } |
95554aad | 9743 | |
5989a64e | 9744 | dwarf2_per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9745 | } |
9746 | ||
8fc0b21d | 9747 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9748 | already been loaded into memory. */ |
9749 | ||
9750 | static void | |
8fc0b21d | 9751 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9752 | { |
8fc0b21d | 9753 | dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 9754 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 9755 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9756 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9757 | struct compunit_symtab *cust; |
10b3939b | 9758 | CORE_ADDR baseaddr; |
4359dff1 | 9759 | struct block *static_block; |
3e29f34a | 9760 | CORE_ADDR addr; |
10b3939b | 9761 | |
b3b3bada | 9762 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9763 | |
c89b44cd TT |
9764 | /* Clear the list here in case something was left over. */ |
9765 | cu->method_list.clear (); | |
10b3939b | 9766 | |
95554aad TT |
9767 | cu->language = pretend_language; |
9768 | cu->language_defn = language_def (cu->language); | |
9769 | ||
c906108c | 9770 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9771 | process_die (cu->dies, cu); |
c906108c | 9772 | |
a766d390 DE |
9773 | /* For now fudge the Go package. */ |
9774 | if (cu->language == language_go) | |
9775 | fixup_go_packaging (cu); | |
9776 | ||
5f48f8f3 | 9777 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9778 | should be complete, and it should now be safe to compute all of the |
9779 | physnames. */ | |
9780 | compute_delayed_physnames (cu); | |
3da10d80 | 9781 | |
c9317f21 TT |
9782 | if (cu->language == language_rust) |
9783 | rust_union_quirks (cu); | |
9784 | ||
fae299cd DC |
9785 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9786 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9787 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9788 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9789 | |
3e29f34a | 9790 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9791 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9792 | |
9793 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9794 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9795 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9796 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9797 | this comp unit. */ | |
9798 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9799 | ||
c24bdb02 | 9800 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9801 | SECT_OFF_TEXT (objfile), |
9802 | 0); | |
c906108c | 9803 | |
43f3e411 | 9804 | if (cust != NULL) |
c906108c | 9805 | { |
df15bd07 | 9806 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9807 | |
8be455d7 JK |
9808 | /* Set symtab language to language from DW_AT_language. If the |
9809 | compilation is from a C file generated by language preprocessors, do | |
9810 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9811 | if (!(cu->language == language_c |
40e3ad0e | 9812 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9813 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9814 | |
9815 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9816 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9817 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9818 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9819 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9820 | |
9821 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9822 | needed, it would be wrong due to missing DW_AT_producer there. | |
9823 | ||
9824 | Still one can confuse GDB by using non-standard GCC compilation | |
9825 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9826 | */ |
ab260dad | 9827 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9828 | cust->locations_valid = 1; |
e0d00bc7 JK |
9829 | |
9830 | if (gcc_4_minor >= 5) | |
43f3e411 | 9831 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9832 | |
43f3e411 | 9833 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9834 | } |
9291a0cd | 9835 | |
8fc0b21d | 9836 | dwarf2_per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9837 | |
95554aad | 9838 | /* Push it for inclusion processing later. */ |
8fc0b21d | 9839 | dwarf2_per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9840 | |
9841 | /* Not needed any more. */ | |
c24bdb02 | 9842 | cu->reset_builder (); |
f4dc4d17 | 9843 | } |
45cfd468 | 9844 | |
8fc0b21d | 9845 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
9846 | already been loaded into memory. */ |
9847 | ||
9848 | static void | |
8fc0b21d | 9849 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
9850 | enum language pretend_language) |
9851 | { | |
8fc0b21d | 9852 | dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 9853 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43f3e411 | 9854 | struct compunit_symtab *cust; |
0186c6a7 DE |
9855 | struct signatured_type *sig_type; |
9856 | ||
8fc0b21d SM |
9857 | gdb_assert (cu->per_cu->is_debug_types); |
9858 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 9859 | |
c89b44cd TT |
9860 | /* Clear the list here in case something was left over. */ |
9861 | cu->method_list.clear (); | |
f4dc4d17 | 9862 | |
f4dc4d17 DE |
9863 | cu->language = pretend_language; |
9864 | cu->language_defn = language_def (cu->language); | |
9865 | ||
9866 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9867 | process_die (cu->dies, cu); | |
9868 | ||
9869 | /* For now fudge the Go package. */ | |
9870 | if (cu->language == language_go) | |
9871 | fixup_go_packaging (cu); | |
9872 | ||
5f48f8f3 | 9873 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9874 | should be complete, and it should now be safe to compute all of the |
9875 | physnames. */ | |
9876 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9877 | |
c9317f21 TT |
9878 | if (cu->language == language_rust) |
9879 | rust_union_quirks (cu); | |
9880 | ||
f4dc4d17 DE |
9881 | /* TUs share symbol tables. |
9882 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9883 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9884 | this TU's symbols to the existing symtab. */ | |
8adb8487 TT |
9885 | type_unit_group_unshareable *tug_unshare = |
9886 | dwarf2_per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); | |
9887 | if (tug_unshare->compunit_symtab == NULL) | |
45cfd468 | 9888 | { |
c24bdb02 KS |
9889 | buildsym_compunit *builder = cu->get_builder (); |
9890 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 9891 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 9892 | |
43f3e411 | 9893 | if (cust != NULL) |
f4dc4d17 DE |
9894 | { |
9895 | /* Set symtab language to language from DW_AT_language. If the | |
9896 | compilation is from a C file generated by language preprocessors, | |
9897 | do not set the language if it was already deduced by | |
9898 | start_subfile. */ | |
43f3e411 DE |
9899 | if (!(cu->language == language_c |
9900 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9901 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9902 | } |
9903 | } | |
9904 | else | |
9905 | { | |
c24bdb02 | 9906 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 9907 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
9908 | } |
9909 | ||
8fc0b21d | 9910 | dwarf2_per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
9911 | |
9912 | /* Not needed any more. */ | |
c24bdb02 | 9913 | cu->reset_builder (); |
c906108c SS |
9914 | } |
9915 | ||
95554aad TT |
9916 | /* Process an imported unit DIE. */ |
9917 | ||
9918 | static void | |
9919 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9920 | { | |
9921 | struct attribute *attr; | |
9922 | ||
f4dc4d17 DE |
9923 | /* For now we don't handle imported units in type units. */ |
9924 | if (cu->per_cu->is_debug_types) | |
9925 | { | |
9926 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9927 | " supported in type units [in module %s]"), | |
5e22e966 | 9928 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
9929 | } |
9930 | ||
95554aad TT |
9931 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9932 | if (attr != NULL) | |
9933 | { | |
0826b30a | 9934 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 9935 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 9936 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 9937 | dwarf2_per_cu_data *per_cu |
ab432490 | 9938 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 9939 | |
58990295 TV |
9940 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9941 | into another compilation unit, at root level. Regard this as a hint, | |
9942 | and ignore it. */ | |
9943 | if (die->parent && die->parent->parent == NULL | |
9944 | && per_cu->unit_type == DW_UT_compile | |
9945 | && per_cu->lang == language_cplus) | |
9946 | return; | |
9947 | ||
69d751e3 | 9948 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 9949 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 9950 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 9951 | |
ae640021 | 9952 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9953 | } |
9954 | } | |
9955 | ||
4c8aa72d PA |
9956 | /* RAII object that represents a process_die scope: i.e., |
9957 | starts/finishes processing a DIE. */ | |
9958 | class process_die_scope | |
adde2bff | 9959 | { |
4c8aa72d PA |
9960 | public: |
9961 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9962 | : m_die (die), m_cu (cu) | |
9963 | { | |
9964 | /* We should only be processing DIEs not already in process. */ | |
9965 | gdb_assert (!m_die->in_process); | |
9966 | m_die->in_process = true; | |
9967 | } | |
8c3cb9fa | 9968 | |
4c8aa72d PA |
9969 | ~process_die_scope () |
9970 | { | |
9971 | m_die->in_process = false; | |
9972 | ||
9973 | /* If we're done processing the DIE for the CU that owns the line | |
9974 | header, we don't need the line header anymore. */ | |
9975 | if (m_cu->line_header_die_owner == m_die) | |
9976 | { | |
9977 | delete m_cu->line_header; | |
9978 | m_cu->line_header = NULL; | |
9979 | m_cu->line_header_die_owner = NULL; | |
9980 | } | |
9981 | } | |
9982 | ||
9983 | private: | |
9984 | die_info *m_die; | |
9985 | dwarf2_cu *m_cu; | |
9986 | }; | |
adde2bff | 9987 | |
c906108c SS |
9988 | /* Process a die and its children. */ |
9989 | ||
9990 | static void | |
e7c27a73 | 9991 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9992 | { |
4c8aa72d | 9993 | process_die_scope scope (die, cu); |
adde2bff | 9994 | |
c906108c SS |
9995 | switch (die->tag) |
9996 | { | |
9997 | case DW_TAG_padding: | |
9998 | break; | |
9999 | case DW_TAG_compile_unit: | |
95554aad | 10000 | case DW_TAG_partial_unit: |
e7c27a73 | 10001 | read_file_scope (die, cu); |
c906108c | 10002 | break; |
348e048f DE |
10003 | case DW_TAG_type_unit: |
10004 | read_type_unit_scope (die, cu); | |
10005 | break; | |
c906108c | 10006 | case DW_TAG_subprogram: |
0a4b0913 AB |
10007 | /* Nested subprograms in Fortran get a prefix. */ |
10008 | if (cu->language == language_fortran | |
10009 | && die->parent != NULL | |
10010 | && die->parent->tag == DW_TAG_subprogram) | |
10011 | cu->processing_has_namespace_info = true; | |
10012 | /* Fall through. */ | |
c906108c | 10013 | case DW_TAG_inlined_subroutine: |
edb3359d | 10014 | read_func_scope (die, cu); |
c906108c SS |
10015 | break; |
10016 | case DW_TAG_lexical_block: | |
14898363 L |
10017 | case DW_TAG_try_block: |
10018 | case DW_TAG_catch_block: | |
e7c27a73 | 10019 | read_lexical_block_scope (die, cu); |
c906108c | 10020 | break; |
216f72a1 | 10021 | case DW_TAG_call_site: |
96408a79 SA |
10022 | case DW_TAG_GNU_call_site: |
10023 | read_call_site_scope (die, cu); | |
10024 | break; | |
c906108c | 10025 | case DW_TAG_class_type: |
680b30c7 | 10026 | case DW_TAG_interface_type: |
c906108c SS |
10027 | case DW_TAG_structure_type: |
10028 | case DW_TAG_union_type: | |
134d01f1 | 10029 | process_structure_scope (die, cu); |
c906108c SS |
10030 | break; |
10031 | case DW_TAG_enumeration_type: | |
134d01f1 | 10032 | process_enumeration_scope (die, cu); |
c906108c | 10033 | break; |
134d01f1 | 10034 | |
f792889a DJ |
10035 | /* These dies have a type, but processing them does not create |
10036 | a symbol or recurse to process the children. Therefore we can | |
10037 | read them on-demand through read_type_die. */ | |
c906108c | 10038 | case DW_TAG_subroutine_type: |
72019c9c | 10039 | case DW_TAG_set_type: |
c906108c | 10040 | case DW_TAG_array_type: |
c906108c | 10041 | case DW_TAG_pointer_type: |
c906108c | 10042 | case DW_TAG_ptr_to_member_type: |
c906108c | 10043 | case DW_TAG_reference_type: |
4297a3f0 | 10044 | case DW_TAG_rvalue_reference_type: |
c906108c | 10045 | case DW_TAG_string_type: |
c906108c | 10046 | break; |
134d01f1 | 10047 | |
c906108c | 10048 | case DW_TAG_base_type: |
a02abb62 | 10049 | case DW_TAG_subrange_type: |
cb249c71 | 10050 | case DW_TAG_typedef: |
134d01f1 DJ |
10051 | /* Add a typedef symbol for the type definition, if it has a |
10052 | DW_AT_name. */ | |
f792889a | 10053 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10054 | break; |
c906108c | 10055 | case DW_TAG_common_block: |
e7c27a73 | 10056 | read_common_block (die, cu); |
c906108c SS |
10057 | break; |
10058 | case DW_TAG_common_inclusion: | |
10059 | break; | |
d9fa45fe | 10060 | case DW_TAG_namespace: |
9068261f | 10061 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10062 | read_namespace (die, cu); |
d9fa45fe | 10063 | break; |
5d7cb8df | 10064 | case DW_TAG_module: |
9068261f | 10065 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10066 | read_module (die, cu); |
10067 | break; | |
d9fa45fe | 10068 | case DW_TAG_imported_declaration: |
9068261f | 10069 | cu->processing_has_namespace_info = true; |
74921315 KS |
10070 | if (read_namespace_alias (die, cu)) |
10071 | break; | |
86a73007 TT |
10072 | /* The declaration is not a global namespace alias. */ |
10073 | /* Fall through. */ | |
d9fa45fe | 10074 | case DW_TAG_imported_module: |
9068261f | 10075 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10076 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10077 | || cu->language != language_fortran)) | |
b98664d3 | 10078 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10079 | dwarf_tag_name (die->tag)); |
10080 | read_import_statement (die, cu); | |
d9fa45fe | 10081 | break; |
95554aad TT |
10082 | |
10083 | case DW_TAG_imported_unit: | |
10084 | process_imported_unit_die (die, cu); | |
10085 | break; | |
10086 | ||
71a3c369 TT |
10087 | case DW_TAG_variable: |
10088 | read_variable (die, cu); | |
10089 | break; | |
10090 | ||
c906108c | 10091 | default: |
e7c27a73 | 10092 | new_symbol (die, NULL, cu); |
c906108c SS |
10093 | break; |
10094 | } | |
10095 | } | |
ca69b9e6 DE |
10096 | \f |
10097 | /* DWARF name computation. */ | |
c906108c | 10098 | |
94af9270 KS |
10099 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10100 | needs to have the name of the scope prepended to the name listed in the | |
10101 | die. */ | |
10102 | ||
10103 | static int | |
10104 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10105 | { | |
1c809c68 TT |
10106 | struct attribute *attr; |
10107 | ||
94af9270 KS |
10108 | switch (die->tag) |
10109 | { | |
10110 | case DW_TAG_namespace: | |
10111 | case DW_TAG_typedef: | |
10112 | case DW_TAG_class_type: | |
10113 | case DW_TAG_interface_type: | |
10114 | case DW_TAG_structure_type: | |
10115 | case DW_TAG_union_type: | |
10116 | case DW_TAG_enumeration_type: | |
10117 | case DW_TAG_enumerator: | |
10118 | case DW_TAG_subprogram: | |
08a76f8a | 10119 | case DW_TAG_inlined_subroutine: |
94af9270 | 10120 | case DW_TAG_member: |
74921315 | 10121 | case DW_TAG_imported_declaration: |
94af9270 KS |
10122 | return 1; |
10123 | ||
10124 | case DW_TAG_variable: | |
c2b0a229 | 10125 | case DW_TAG_constant: |
94af9270 KS |
10126 | /* We only need to prefix "globally" visible variables. These include |
10127 | any variable marked with DW_AT_external or any variable that | |
10128 | lives in a namespace. [Variables in anonymous namespaces | |
10129 | require prefixing, but they are not DW_AT_external.] */ | |
10130 | ||
10131 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10132 | { | |
10133 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10134 | |
94af9270 KS |
10135 | return die_needs_namespace (die_specification (die, &spec_cu), |
10136 | spec_cu); | |
10137 | } | |
10138 | ||
1c809c68 | 10139 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10140 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10141 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10142 | return 0; |
10143 | /* A variable in a lexical block of some kind does not need a | |
10144 | namespace, even though in C++ such variables may be external | |
10145 | and have a mangled name. */ | |
10146 | if (die->parent->tag == DW_TAG_lexical_block | |
10147 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10148 | || die->parent->tag == DW_TAG_catch_block |
10149 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10150 | return 0; |
10151 | return 1; | |
94af9270 KS |
10152 | |
10153 | default: | |
10154 | return 0; | |
10155 | } | |
10156 | } | |
10157 | ||
73b9be8b KS |
10158 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10159 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10160 | defined for the given DIE. */ | |
10161 | ||
10162 | static struct attribute * | |
10163 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10164 | { | |
10165 | struct attribute *attr; | |
10166 | ||
10167 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10168 | if (attr == NULL) | |
10169 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10170 | ||
10171 | return attr; | |
10172 | } | |
10173 | ||
10174 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10175 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10176 | defined for the given DIE. */ | |
10177 | ||
10178 | static const char * | |
10179 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10180 | { | |
10181 | const char *linkage_name; | |
10182 | ||
10183 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10184 | if (linkage_name == NULL) | |
10185 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10186 | ||
787de330 TT |
10187 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10188 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10189 | if (cu->language == language_rust && linkage_name != NULL | |
10190 | && strchr (linkage_name, '{') != NULL) | |
10191 | linkage_name = NULL; | |
10192 | ||
73b9be8b KS |
10193 | return linkage_name; |
10194 | } | |
10195 | ||
94af9270 | 10196 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10197 | compute the physname for the object, which include a method's: |
9c37b5ae | 10198 | - formal parameters (C++), |
a766d390 | 10199 | - receiver type (Go), |
a766d390 DE |
10200 | |
10201 | The term "physname" is a bit confusing. | |
10202 | For C++, for example, it is the demangled name. | |
10203 | For Go, for example, it's the mangled name. | |
94af9270 | 10204 | |
af6b7be1 JB |
10205 | For Ada, return the DIE's linkage name rather than the fully qualified |
10206 | name. PHYSNAME is ignored.. | |
10207 | ||
5989a64e | 10208 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10209 | canonicalized. */ |
94af9270 KS |
10210 | |
10211 | static const char * | |
15d034d0 TT |
10212 | dwarf2_compute_name (const char *name, |
10213 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10214 | int physname) |
10215 | { | |
5e22e966 | 10216 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10217 | |
94af9270 KS |
10218 | if (name == NULL) |
10219 | name = dwarf2_name (die, cu); | |
10220 | ||
2ee7123e DE |
10221 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10222 | but otherwise compute it by typename_concat inside GDB. | |
10223 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10224 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10225 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10226 | will set the demangled name to the result of dwarf2_full_name, and it is |
10227 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10228 | if (cu->language == language_ada |
10229 | || (cu->language == language_fortran && physname)) | |
10230 | { | |
10231 | /* For Ada unit, we prefer the linkage name over the name, as | |
10232 | the former contains the exported name, which the user expects | |
10233 | to be able to reference. Ideally, we want the user to be able | |
10234 | to reference this entity using either natural or linkage name, | |
10235 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10236 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10237 | |
2ee7123e DE |
10238 | if (linkage_name != NULL) |
10239 | return linkage_name; | |
f55ee35c JK |
10240 | } |
10241 | ||
94af9270 KS |
10242 | /* These are the only languages we know how to qualify names in. */ |
10243 | if (name != NULL | |
9c37b5ae | 10244 | && (cu->language == language_cplus |
c44af4eb TT |
10245 | || cu->language == language_fortran || cu->language == language_d |
10246 | || cu->language == language_rust)) | |
94af9270 KS |
10247 | { |
10248 | if (die_needs_namespace (die, cu)) | |
10249 | { | |
0d5cff50 | 10250 | const char *prefix; |
34a68019 | 10251 | const char *canonical_name = NULL; |
94af9270 | 10252 | |
d7e74731 PA |
10253 | string_file buf; |
10254 | ||
94af9270 | 10255 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10256 | if (*prefix != '\0') |
10257 | { | |
43816ebc TT |
10258 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10259 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10260 | |
43816ebc | 10261 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10262 | } |
10263 | else | |
d7e74731 | 10264 | buf.puts (name); |
94af9270 | 10265 | |
98bfdba5 PA |
10266 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10267 | as children with DW_TAG_template_type_param or | |
10268 | DW_TAG_value_type_param. If the latter, add them to the name | |
10269 | here. If the name already has template parameters, then | |
10270 | skip this step; some versions of GCC emit both, and | |
10271 | it is more efficient to use the pre-computed name. | |
10272 | ||
10273 | Something to keep in mind about this process: it is very | |
10274 | unlikely, or in some cases downright impossible, to produce | |
10275 | something that will match the mangled name of a function. | |
10276 | If the definition of the function has the same debug info, | |
10277 | we should be able to match up with it anyway. But fallbacks | |
10278 | using the minimal symbol, for instance to find a method | |
10279 | implemented in a stripped copy of libstdc++, will not work. | |
10280 | If we do not have debug info for the definition, we will have to | |
10281 | match them up some other way. | |
10282 | ||
10283 | When we do name matching there is a related problem with function | |
10284 | templates; two instantiated function templates are allowed to | |
10285 | differ only by their return types, which we do not add here. */ | |
10286 | ||
10287 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10288 | { | |
10289 | struct attribute *attr; | |
10290 | struct die_info *child; | |
10291 | int first = 1; | |
10292 | ||
10293 | die->building_fullname = 1; | |
10294 | ||
10295 | for (child = die->child; child != NULL; child = child->sibling) | |
10296 | { | |
10297 | struct type *type; | |
12df843f | 10298 | LONGEST value; |
d521ce57 | 10299 | const gdb_byte *bytes; |
98bfdba5 PA |
10300 | struct dwarf2_locexpr_baton *baton; |
10301 | struct value *v; | |
10302 | ||
10303 | if (child->tag != DW_TAG_template_type_param | |
10304 | && child->tag != DW_TAG_template_value_param) | |
10305 | continue; | |
10306 | ||
10307 | if (first) | |
10308 | { | |
d7e74731 | 10309 | buf.puts ("<"); |
98bfdba5 PA |
10310 | first = 0; |
10311 | } | |
10312 | else | |
d7e74731 | 10313 | buf.puts (", "); |
98bfdba5 PA |
10314 | |
10315 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10316 | if (attr == NULL) | |
10317 | { | |
b98664d3 | 10318 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10319 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10320 | continue; |
10321 | } | |
10322 | type = die_type (child, cu); | |
10323 | ||
10324 | if (child->tag == DW_TAG_template_type_param) | |
10325 | { | |
c1ec8cea TT |
10326 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10327 | &type_print_raw_options); | |
98bfdba5 PA |
10328 | continue; |
10329 | } | |
10330 | ||
10331 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10332 | if (attr == NULL) | |
10333 | { | |
b98664d3 | 10334 | complaint (_("template parameter missing " |
3e43a32a | 10335 | "DW_AT_const_value")); |
d7e74731 | 10336 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10337 | continue; |
10338 | } | |
10339 | ||
10340 | dwarf2_const_value_attr (attr, type, name, | |
10341 | &cu->comp_unit_obstack, cu, | |
10342 | &value, &bytes, &baton); | |
10343 | ||
10344 | if (TYPE_NOSIGN (type)) | |
10345 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10346 | changed, this can use value_print instead. */ | |
d7e74731 | 10347 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10348 | else |
10349 | { | |
10350 | struct value_print_options opts; | |
10351 | ||
10352 | if (baton != NULL) | |
10353 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10354 | baton->data, | |
10355 | baton->size, | |
9f47c707 SM |
10356 | baton->per_cu, |
10357 | baton->per_objfile); | |
98bfdba5 PA |
10358 | else if (bytes != NULL) |
10359 | { | |
10360 | v = allocate_value (type); | |
10361 | memcpy (value_contents_writeable (v), bytes, | |
10362 | TYPE_LENGTH (type)); | |
10363 | } | |
10364 | else | |
10365 | v = value_from_longest (type, value); | |
10366 | ||
3e43a32a MS |
10367 | /* Specify decimal so that we do not depend on |
10368 | the radix. */ | |
98bfdba5 PA |
10369 | get_formatted_print_options (&opts, 'd'); |
10370 | opts.raw = 1; | |
d7e74731 | 10371 | value_print (v, &buf, &opts); |
98bfdba5 | 10372 | release_value (v); |
98bfdba5 PA |
10373 | } |
10374 | } | |
10375 | ||
10376 | die->building_fullname = 0; | |
10377 | ||
10378 | if (!first) | |
10379 | { | |
10380 | /* Close the argument list, with a space if necessary | |
10381 | (nested templates). */ | |
d7e74731 PA |
10382 | if (!buf.empty () && buf.string ().back () == '>') |
10383 | buf.puts (" >"); | |
98bfdba5 | 10384 | else |
d7e74731 | 10385 | buf.puts (">"); |
98bfdba5 PA |
10386 | } |
10387 | } | |
10388 | ||
9c37b5ae | 10389 | /* For C++ methods, append formal parameter type |
94af9270 | 10390 | information, if PHYSNAME. */ |
6e70227d | 10391 | |
94af9270 | 10392 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10393 | && cu->language == language_cplus) |
94af9270 KS |
10394 | { |
10395 | struct type *type = read_type_die (die, cu); | |
10396 | ||
d7e74731 | 10397 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10398 | &type_print_raw_options); |
94af9270 | 10399 | |
9c37b5ae | 10400 | if (cu->language == language_cplus) |
94af9270 | 10401 | { |
60430eff DJ |
10402 | /* Assume that an artificial first parameter is |
10403 | "this", but do not crash if it is not. RealView | |
10404 | marks unnamed (and thus unused) parameters as | |
10405 | artificial; there is no way to differentiate | |
10406 | the two cases. */ | |
1f704f76 | 10407 | if (type->num_fields () > 0 |
94af9270 | 10408 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
78134374 | 10409 | && TYPE_FIELD_TYPE (type, 0)->code () == TYPE_CODE_PTR |
3e43a32a MS |
10410 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10411 | 0)))) | |
d7e74731 | 10412 | buf.puts (" const"); |
94af9270 KS |
10413 | } |
10414 | } | |
10415 | ||
d7e74731 | 10416 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10417 | |
10418 | if (cu->language == language_cplus) | |
34a68019 | 10419 | canonical_name |
322a8516 | 10420 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10421 | objfile); |
34a68019 TT |
10422 | |
10423 | /* If we only computed INTERMEDIATE_NAME, or if | |
10424 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10425 | intern it. */ |
322a8516 | 10426 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10427 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10428 | else |
10429 | name = canonical_name; | |
94af9270 KS |
10430 | } |
10431 | } | |
10432 | ||
10433 | return name; | |
10434 | } | |
10435 | ||
0114d602 DJ |
10436 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10437 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10438 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10439 | not have a name. NAME may either be from a previous call to |
10440 | dwarf2_name or NULL. | |
10441 | ||
9c37b5ae | 10442 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10443 | |
10444 | static const char * | |
15d034d0 | 10445 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10446 | { |
94af9270 KS |
10447 | return dwarf2_compute_name (name, die, cu, 0); |
10448 | } | |
0114d602 | 10449 | |
94af9270 KS |
10450 | /* Construct a physname for the given DIE in CU. NAME may either be |
10451 | from a previous call to dwarf2_name or NULL. The result will be | |
10452 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10453 | name. | |
0114d602 | 10454 | |
9c37b5ae | 10455 | The output string will be canonicalized (if C++). */ |
0114d602 | 10456 | |
94af9270 | 10457 | static const char * |
15d034d0 | 10458 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10459 | { |
5e22e966 | 10460 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10461 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10462 | int need_copy = 1; |
10463 | ||
10464 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10465 | on its own. */ | |
10466 | if (!die_needs_namespace (die, cu)) | |
10467 | return dwarf2_compute_name (name, die, cu, 1); | |
10468 | ||
906bb4c5 TT |
10469 | if (cu->language != language_rust) |
10470 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10471 | |
10472 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10473 | has computed. */ | |
791afaa2 | 10474 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10475 | if (mangled != NULL) |
900e11f9 | 10476 | { |
900e11f9 | 10477 | |
59cc4834 JB |
10478 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10479 | { | |
10480 | /* Do nothing (do not demangle the symbol name). */ | |
10481 | } | |
10482 | else if (cu->language == language_go) | |
a766d390 | 10483 | { |
5e2db402 TT |
10484 | /* This is a lie, but we already lie to the caller new_symbol. |
10485 | new_symbol assumes we return the mangled name. | |
a766d390 | 10486 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10487 | } |
10488 | else | |
10489 | { | |
0eb876f5 JB |
10490 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10491 | their return type. It is easier for GDB users to search | |
10492 | for such functions as `name(params)' than `long name(params)'. | |
10493 | In such case the minimal symbol names do not match the full | |
10494 | symbol names but for template functions there is never a need | |
10495 | to look up their definition from their declaration so | |
10496 | the only disadvantage remains the minimal symbol variant | |
10497 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10498 | demangled.reset (gdb_demangle (mangled, |
10499 | (DMGL_PARAMS | DMGL_ANSI | |
10500 | | DMGL_RET_DROP))); | |
a766d390 | 10501 | } |
900e11f9 | 10502 | if (demangled) |
791afaa2 | 10503 | canon = demangled.get (); |
900e11f9 JK |
10504 | else |
10505 | { | |
10506 | canon = mangled; | |
10507 | need_copy = 0; | |
10508 | } | |
10509 | } | |
10510 | ||
10511 | if (canon == NULL || check_physname) | |
10512 | { | |
10513 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10514 | ||
10515 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10516 | { | |
10517 | /* It may not mean a bug in GDB. The compiler could also | |
10518 | compute DW_AT_linkage_name incorrectly. But in such case | |
10519 | GDB would need to be bug-to-bug compatible. */ | |
10520 | ||
b98664d3 | 10521 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10522 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10523 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10524 | objfile_name (objfile)); |
900e11f9 JK |
10525 | |
10526 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10527 | is available here - over computed PHYSNAME. It is safer | |
10528 | against both buggy GDB and buggy compilers. */ | |
10529 | ||
10530 | retval = canon; | |
10531 | } | |
10532 | else | |
10533 | { | |
10534 | retval = physname; | |
10535 | need_copy = 0; | |
10536 | } | |
10537 | } | |
10538 | else | |
10539 | retval = canon; | |
10540 | ||
10541 | if (need_copy) | |
be1e3d3e | 10542 | retval = objfile->intern (retval); |
900e11f9 | 10543 | |
900e11f9 | 10544 | return retval; |
0114d602 DJ |
10545 | } |
10546 | ||
74921315 KS |
10547 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10548 | a new symbol for it. | |
10549 | ||
10550 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10551 | ||
10552 | static int | |
10553 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10554 | { | |
10555 | struct attribute *attr; | |
10556 | ||
10557 | /* If the die does not have a name, this is not a namespace | |
10558 | alias. */ | |
10559 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10560 | if (attr != NULL) | |
10561 | { | |
10562 | int num; | |
10563 | struct die_info *d = die; | |
10564 | struct dwarf2_cu *imported_cu = cu; | |
10565 | ||
10566 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10567 | keep inspecting DIEs until we hit the underlying import. */ | |
10568 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10569 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10570 | { | |
10571 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10572 | if (attr == NULL) | |
10573 | break; | |
10574 | ||
10575 | d = follow_die_ref (d, attr, &imported_cu); | |
10576 | if (d->tag != DW_TAG_imported_declaration) | |
10577 | break; | |
10578 | } | |
10579 | ||
10580 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10581 | { | |
b98664d3 | 10582 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10583 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10584 | return 0; |
10585 | } | |
10586 | ||
10587 | if (attr != NULL) | |
10588 | { | |
10589 | struct type *type; | |
0826b30a | 10590 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10591 | |
aa66c379 | 10592 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10593 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10594 | { |
10595 | /* This declaration is a global namespace alias. Add | |
10596 | a symbol for it whose type is the aliased namespace. */ | |
10597 | new_symbol (die, type, cu); | |
10598 | return 1; | |
10599 | } | |
10600 | } | |
10601 | } | |
10602 | ||
10603 | return 0; | |
10604 | } | |
10605 | ||
22cee43f | 10606 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10607 | current context for CU. |
22cee43f PMR |
10608 | |
10609 | For Ada, imported declarations can materialize renamings, which *may* be | |
10610 | global. However it is impossible (for now?) in DWARF to distinguish | |
10611 | "external" imported declarations and "static" ones. As all imported | |
10612 | declarations seem to be static in all other languages, make them all CU-wide | |
10613 | global only in Ada. */ | |
10614 | ||
10615 | static struct using_direct ** | |
804d2729 | 10616 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10617 | { |
c24bdb02 KS |
10618 | if (cu->language == language_ada |
10619 | && cu->get_builder ()->outermost_context_p ()) | |
10620 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10621 | else |
c24bdb02 | 10622 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10623 | } |
10624 | ||
27aa8d6a SW |
10625 | /* Read the import statement specified by the given die and record it. */ |
10626 | ||
10627 | static void | |
10628 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10629 | { | |
5e22e966 | 10630 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10631 | struct attribute *import_attr; |
32019081 | 10632 | struct die_info *imported_die, *child_die; |
de4affc9 | 10633 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10634 | const char *imported_name; |
794684b6 | 10635 | const char *imported_name_prefix; |
13387711 SW |
10636 | const char *canonical_name; |
10637 | const char *import_alias; | |
10638 | const char *imported_declaration = NULL; | |
794684b6 | 10639 | const char *import_prefix; |
eb1e02fd | 10640 | std::vector<const char *> excludes; |
13387711 | 10641 | |
27aa8d6a SW |
10642 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10643 | if (import_attr == NULL) | |
10644 | { | |
b98664d3 | 10645 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10646 | dwarf_tag_name (die->tag)); |
10647 | return; | |
10648 | } | |
10649 | ||
de4affc9 CC |
10650 | imported_cu = cu; |
10651 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10652 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10653 | if (imported_name == NULL) |
10654 | { | |
10655 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10656 | ||
10657 | The import in the following code: | |
10658 | namespace A | |
10659 | { | |
10660 | typedef int B; | |
10661 | } | |
10662 | ||
10663 | int main () | |
10664 | { | |
10665 | using A::B; | |
10666 | B b; | |
10667 | return b; | |
10668 | } | |
10669 | ||
10670 | ... | |
10671 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10672 | <52> DW_AT_decl_file : 1 | |
10673 | <53> DW_AT_decl_line : 6 | |
10674 | <54> DW_AT_import : <0x75> | |
10675 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10676 | <59> DW_AT_name : B | |
10677 | <5b> DW_AT_decl_file : 1 | |
10678 | <5c> DW_AT_decl_line : 2 | |
10679 | <5d> DW_AT_type : <0x6e> | |
10680 | ... | |
10681 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10682 | <76> DW_AT_byte_size : 4 | |
10683 | <77> DW_AT_encoding : 5 (signed) | |
10684 | ||
10685 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10686 | This case will be ignored until the gcc bug is fixed. */ | |
10687 | return; | |
10688 | } | |
10689 | ||
82856980 SW |
10690 | /* Figure out the local name after import. */ |
10691 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10692 | |
794684b6 SW |
10693 | /* Figure out where the statement is being imported to. */ |
10694 | import_prefix = determine_prefix (die, cu); | |
10695 | ||
10696 | /* Figure out what the scope of the imported die is and prepend it | |
10697 | to the name of the imported die. */ | |
de4affc9 | 10698 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10699 | |
f55ee35c JK |
10700 | if (imported_die->tag != DW_TAG_namespace |
10701 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10702 | { |
13387711 SW |
10703 | imported_declaration = imported_name; |
10704 | canonical_name = imported_name_prefix; | |
794684b6 | 10705 | } |
13387711 | 10706 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10707 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10708 | imported_name_prefix, |
10709 | (cu->language == language_d ? "." : "::"), | |
10710 | imported_name, (char *) NULL); | |
13387711 SW |
10711 | else |
10712 | canonical_name = imported_name; | |
794684b6 | 10713 | |
32019081 JK |
10714 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10715 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10716 | child_die = child_die->sibling) |
32019081 JK |
10717 | { |
10718 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10719 | represented by an imported module entry with an import attribute | |
10720 | referring to the module and owned entries corresponding to those | |
10721 | entities that are renamed as part of being imported. */ | |
10722 | ||
10723 | if (child_die->tag != DW_TAG_imported_declaration) | |
10724 | { | |
b98664d3 | 10725 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10726 | "- DIE at %s [in module %s]"), |
10727 | sect_offset_str (child_die->sect_off), | |
10728 | objfile_name (objfile)); | |
32019081 JK |
10729 | continue; |
10730 | } | |
10731 | ||
10732 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10733 | if (import_attr == NULL) | |
10734 | { | |
b98664d3 | 10735 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10736 | dwarf_tag_name (child_die->tag)); |
10737 | continue; | |
10738 | } | |
10739 | ||
10740 | imported_cu = cu; | |
10741 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10742 | &imported_cu); | |
10743 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10744 | if (imported_name == NULL) | |
10745 | { | |
b98664d3 | 10746 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10747 | "imported name - DIE at %s [in module %s]"), |
10748 | sect_offset_str (child_die->sect_off), | |
10749 | objfile_name (objfile)); | |
32019081 JK |
10750 | continue; |
10751 | } | |
10752 | ||
eb1e02fd | 10753 | excludes.push_back (imported_name); |
32019081 JK |
10754 | |
10755 | process_die (child_die, cu); | |
10756 | } | |
10757 | ||
804d2729 | 10758 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10759 | import_prefix, |
10760 | canonical_name, | |
10761 | import_alias, | |
10762 | imported_declaration, | |
10763 | excludes, | |
10764 | 0, | |
10765 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10766 | } |
10767 | ||
5230b05a WT |
10768 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10769 | types, but gives them a size of zero. Starting with version 14, | |
10770 | ICC is compatible with GCC. */ | |
10771 | ||
9068261f | 10772 | static bool |
5230b05a WT |
10773 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10774 | { | |
10775 | if (!cu->checked_producer) | |
10776 | check_producer (cu); | |
10777 | ||
10778 | return cu->producer_is_icc_lt_14; | |
10779 | } | |
10780 | ||
eb77c9df AB |
10781 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10782 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10783 | which says that void functions should not have a DW_AT_type. */ | |
10784 | ||
10785 | static bool | |
10786 | producer_is_icc (struct dwarf2_cu *cu) | |
10787 | { | |
10788 | if (!cu->checked_producer) | |
10789 | check_producer (cu); | |
10790 | ||
10791 | return cu->producer_is_icc; | |
10792 | } | |
10793 | ||
1b80a9fa JK |
10794 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10795 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10796 | this, it was first present in GCC release 4.3.0. */ | |
10797 | ||
9068261f | 10798 | static bool |
1b80a9fa JK |
10799 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10800 | { | |
10801 | if (!cu->checked_producer) | |
10802 | check_producer (cu); | |
10803 | ||
10804 | return cu->producer_is_gcc_lt_4_3; | |
10805 | } | |
10806 | ||
d721ba37 PA |
10807 | static file_and_directory |
10808 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10809 | { |
d721ba37 PA |
10810 | file_and_directory res; |
10811 | ||
9291a0cd TT |
10812 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10813 | is not a source language identifier. */ | |
d721ba37 PA |
10814 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10815 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10816 | |
d721ba37 PA |
10817 | if (res.comp_dir == NULL |
10818 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10819 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10820 | { |
d721ba37 PA |
10821 | res.comp_dir_storage = ldirname (res.name); |
10822 | if (!res.comp_dir_storage.empty ()) | |
10823 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10824 | } |
d721ba37 | 10825 | if (res.comp_dir != NULL) |
9291a0cd TT |
10826 | { |
10827 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10828 | directory, get rid of it. */ | |
d721ba37 | 10829 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10830 | |
d721ba37 PA |
10831 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10832 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10833 | } |
10834 | ||
d721ba37 PA |
10835 | if (res.name == NULL) |
10836 | res.name = "<unknown>"; | |
10837 | ||
10838 | return res; | |
9291a0cd TT |
10839 | } |
10840 | ||
f4dc4d17 DE |
10841 | /* Handle DW_AT_stmt_list for a compilation unit. |
10842 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10843 | COMP_DIR is the compilation directory. LOWPC is passed to |
10844 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10845 | |
10846 | static void | |
10847 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10848 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10849 | { |
5e22e966 | 10850 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
2ab95328 | 10851 | struct attribute *attr; |
527f3840 JK |
10852 | struct line_header line_header_local; |
10853 | hashval_t line_header_local_hash; | |
527f3840 JK |
10854 | void **slot; |
10855 | int decode_mapping; | |
2ab95328 | 10856 | |
f4dc4d17 DE |
10857 | gdb_assert (! cu->per_cu->is_debug_types); |
10858 | ||
2ab95328 | 10859 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10860 | if (attr == NULL) |
10861 | return; | |
10862 | ||
9c541725 | 10863 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10864 | |
10865 | /* The line header hash table is only created if needed (it exists to | |
10866 | prevent redundant reading of the line table for partial_units). | |
10867 | If we're given a partial_unit, we'll need it. If we're given a | |
10868 | compile_unit, then use the line header hash table if it's already | |
10869 | created, but don't create one just yet. */ | |
10870 | ||
5989a64e | 10871 | if (dwarf2_per_objfile->per_bfd->line_header_hash == NULL |
527f3840 | 10872 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10873 | { |
5989a64e | 10874 | dwarf2_per_objfile->per_bfd->line_header_hash |
d15acc42 TT |
10875 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10876 | line_header_eq_voidp, | |
10877 | free_line_header_voidp, | |
10878 | xcalloc, xfree)); | |
527f3840 | 10879 | } |
2ab95328 | 10880 | |
9c541725 | 10881 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10882 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10883 | line_header_local_hash = line_header_hash (&line_header_local); | |
5989a64e | 10884 | if (dwarf2_per_objfile->per_bfd->line_header_hash != NULL) |
527f3840 | 10885 | { |
5989a64e | 10886 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->per_bfd->line_header_hash.get (), |
527f3840 JK |
10887 | &line_header_local, |
10888 | line_header_local_hash, NO_INSERT); | |
10889 | ||
10890 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10891 | is not present in *SLOT (since if there is something in *SLOT then | |
10892 | it will be for a partial_unit). */ | |
10893 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10894 | { |
527f3840 | 10895 | gdb_assert (*slot != NULL); |
9a3c8263 | 10896 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10897 | return; |
dee91e82 | 10898 | } |
2ab95328 | 10899 | } |
527f3840 JK |
10900 | |
10901 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10902 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10903 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10904 | if (lh == NULL) | |
527f3840 | 10905 | return; |
4c8aa72d PA |
10906 | |
10907 | cu->line_header = lh.release (); | |
10908 | cu->line_header_die_owner = die; | |
527f3840 | 10909 | |
5989a64e | 10910 | if (dwarf2_per_objfile->per_bfd->line_header_hash == NULL) |
527f3840 JK |
10911 | slot = NULL; |
10912 | else | |
10913 | { | |
5989a64e | 10914 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->per_bfd->line_header_hash.get (), |
527f3840 JK |
10915 | &line_header_local, |
10916 | line_header_local_hash, INSERT); | |
10917 | gdb_assert (slot != NULL); | |
10918 | } | |
10919 | if (slot != NULL && *slot == NULL) | |
10920 | { | |
10921 | /* This newly decoded line number information unit will be owned | |
10922 | by line_header_hash hash table. */ | |
10923 | *slot = cu->line_header; | |
4c8aa72d | 10924 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10925 | } |
10926 | else | |
10927 | { | |
10928 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10929 | may be already used by multiple CUs. Create only temporary decoded | |
10930 | line_header for this CU - it may happen at most once for each line | |
10931 | number information unit. And if we're not using line_header_hash | |
10932 | then this is what we want as well. */ | |
10933 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10934 | } |
10935 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10936 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10937 | decode_mapping); | |
fff8551c | 10938 | |
2ab95328 TT |
10939 | } |
10940 | ||
95554aad | 10941 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10942 | |
c906108c | 10943 | static void |
e7c27a73 | 10944 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10945 | { |
5e22e966 | 10946 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 10947 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 10948 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10949 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10950 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10951 | struct attribute *attr; | |
c906108c | 10952 | struct die_info *child_die; |
e142c38c | 10953 | CORE_ADDR baseaddr; |
6e70227d | 10954 | |
380618d6 | 10955 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10956 | baseaddr = objfile->text_section_offset (); |
c906108c | 10957 | |
fae299cd | 10958 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10959 | |
10960 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10961 | from finish_block. */ | |
2acceee2 | 10962 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10963 | lowpc = highpc; |
3e29f34a | 10964 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10965 | |
d721ba37 | 10966 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10967 | |
f4b8a18d KW |
10968 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10969 | standardised yet. As a workaround for the language detection we fall | |
10970 | back to the DW_AT_producer string. */ | |
10971 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10972 | cu->language = language_opencl; | |
10973 | ||
3019eac3 DE |
10974 | /* Similar hack for Go. */ |
10975 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10976 | set_cu_language (DW_LANG_Go, cu); | |
10977 | ||
c24bdb02 | 10978 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10979 | |
10980 | /* Decode line number information if present. We do this before | |
10981 | processing child DIEs, so that the line header table is available | |
10982 | for DW_AT_decl_file. */ | |
d721ba37 | 10983 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10984 | |
10985 | /* Process all dies in compilation unit. */ | |
10986 | if (die->child != NULL) | |
10987 | { | |
10988 | child_die = die->child; | |
10989 | while (child_die && child_die->tag) | |
10990 | { | |
10991 | process_die (child_die, cu); | |
436c571c | 10992 | child_die = child_die->sibling; |
3019eac3 DE |
10993 | } |
10994 | } | |
10995 | ||
10996 | /* Decode macro information, if present. Dwarf 2 macro information | |
10997 | refers to information in the line number info statement program | |
10998 | header, so we can only read it if we've read the header | |
10999 | successfully. */ | |
0af92d60 JK |
11000 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11001 | if (attr == NULL) | |
11002 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11003 | if (attr && cu->line_header) |
11004 | { | |
11005 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11006 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11007 | |
43f3e411 | 11008 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11009 | } |
11010 | else | |
11011 | { | |
11012 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11013 | if (attr && cu->line_header) | |
11014 | { | |
11015 | unsigned int macro_offset = DW_UNSND (attr); | |
11016 | ||
43f3e411 | 11017 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11018 | } |
11019 | } | |
3019eac3 DE |
11020 | } |
11021 | ||
c24bdb02 KS |
11022 | void |
11023 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11024 | { |
f4dc4d17 DE |
11025 | struct type_unit_group *tu_group; |
11026 | int first_time; | |
3019eac3 | 11027 | struct attribute *attr; |
9c541725 | 11028 | unsigned int i; |
0186c6a7 | 11029 | struct signatured_type *sig_type; |
3019eac3 | 11030 | |
f4dc4d17 | 11031 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11032 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11033 | |
c24bdb02 | 11034 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11035 | |
f4dc4d17 | 11036 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11037 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11038 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11039 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11040 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11041 | |
11042 | /* If we've already processed this stmt_list there's no real need to | |
11043 | do it again, we could fake it and just recreate the part we need | |
11044 | (file name,index -> symtab mapping). If data shows this optimization | |
11045 | is useful we can do it then. */ | |
8adb8487 TT |
11046 | type_unit_group_unshareable *tug_unshare |
11047 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11048 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11049 | |
11050 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11051 | debug info. */ | |
fff8551c | 11052 | line_header_up lh; |
f4dc4d17 | 11053 | if (attr != NULL) |
3019eac3 | 11054 | { |
9c541725 | 11055 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11056 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11057 | } |
11058 | if (lh == NULL) | |
11059 | { | |
11060 | if (first_time) | |
c24bdb02 | 11061 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11062 | else |
11063 | { | |
8adb8487 | 11064 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11065 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11066 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11067 | m_builder.reset (new struct buildsym_compunit |
11068 | (COMPUNIT_OBJFILE (cust), "", | |
11069 | COMPUNIT_DIRNAME (cust), | |
11070 | compunit_language (cust), | |
11071 | 0, cust)); | |
770479f2 | 11072 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11073 | } |
f4dc4d17 | 11074 | return; |
3019eac3 DE |
11075 | } |
11076 | ||
c24bdb02 KS |
11077 | line_header = lh.release (); |
11078 | line_header_die_owner = die; | |
3019eac3 | 11079 | |
f4dc4d17 DE |
11080 | if (first_time) |
11081 | { | |
c24bdb02 | 11082 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11083 | |
1fd60fc0 DE |
11084 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11085 | still initializing it, and our caller (a few levels up) | |
11086 | process_full_type_unit still needs to know if this is the first | |
11087 | time. */ | |
11088 | ||
8adb8487 | 11089 | tug_unshare->symtabs |
4ac93832 TT |
11090 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11091 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11092 | |
7ba99d21 AT |
11093 | auto &file_names = line_header->file_names (); |
11094 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11095 | { |
7ba99d21 | 11096 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11097 | dwarf2_start_subfile (this, fe.name, |
11098 | fe.include_dir (line_header)); | |
11099 | buildsym_compunit *b = get_builder (); | |
11100 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11101 | { |
4c8aa72d PA |
11102 | /* NOTE: start_subfile will recognize when it's been |
11103 | passed a file it has already seen. So we can't | |
11104 | assume there's a simple mapping from | |
11105 | cu->line_header->file_names to subfiles, plus | |
11106 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11107 | b->get_current_subfile ()->symtab |
11108 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11109 | } |
11110 | ||
c24bdb02 | 11111 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11112 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11113 | } |
11114 | } | |
11115 | else | |
3019eac3 | 11116 | { |
c24bdb02 | 11117 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11118 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11119 | m_builder.reset (new struct buildsym_compunit |
11120 | (COMPUNIT_OBJFILE (cust), "", | |
11121 | COMPUNIT_DIRNAME (cust), | |
11122 | compunit_language (cust), | |
11123 | 0, cust)); | |
770479f2 | 11124 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11125 | |
7ba99d21 AT |
11126 | auto &file_names = line_header->file_names (); |
11127 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11128 | { |
7ba99d21 | 11129 | file_entry &fe = file_names[i]; |
8adb8487 | 11130 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11131 | } |
3019eac3 DE |
11132 | } |
11133 | ||
f4dc4d17 DE |
11134 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11135 | so they don't have a "real" (so to speak) symtab anyway. | |
11136 | There is later code that will assign the main symtab to all symbols | |
11137 | that don't have one. We need to handle the case of a symbol with a | |
11138 | missing symtab (DW_AT_decl_file) anyway. */ | |
11139 | } | |
3019eac3 | 11140 | |
f4dc4d17 DE |
11141 | /* Process DW_TAG_type_unit. |
11142 | For TUs we want to skip the first top level sibling if it's not the | |
11143 | actual type being defined by this TU. In this case the first top | |
11144 | level sibling is there to provide context only. */ | |
3019eac3 | 11145 | |
f4dc4d17 DE |
11146 | static void |
11147 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11148 | { | |
11149 | struct die_info *child_die; | |
3019eac3 | 11150 | |
f4dc4d17 DE |
11151 | prepare_one_comp_unit (cu, die, language_minimal); |
11152 | ||
11153 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11154 | We do this before processing child DIEs, so that the line header table | |
11155 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11156 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11157 | |
11158 | if (die->child != NULL) | |
11159 | { | |
11160 | child_die = die->child; | |
11161 | while (child_die && child_die->tag) | |
11162 | { | |
11163 | process_die (child_die, cu); | |
436c571c | 11164 | child_die = child_die->sibling; |
f4dc4d17 DE |
11165 | } |
11166 | } | |
3019eac3 DE |
11167 | } |
11168 | \f | |
80626a55 DE |
11169 | /* DWO/DWP files. |
11170 | ||
11171 | http://gcc.gnu.org/wiki/DebugFission | |
11172 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11173 | ||
11174 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11175 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11176 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11177 | |
11178 | static hashval_t | |
11179 | hash_dwo_file (const void *item) | |
11180 | { | |
9a3c8263 | 11181 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11182 | hashval_t hash; |
3019eac3 | 11183 | |
a2ce51a0 DE |
11184 | hash = htab_hash_string (dwo_file->dwo_name); |
11185 | if (dwo_file->comp_dir != NULL) | |
11186 | hash += htab_hash_string (dwo_file->comp_dir); | |
11187 | return hash; | |
3019eac3 DE |
11188 | } |
11189 | ||
11190 | static int | |
11191 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11192 | { | |
9a3c8263 SM |
11193 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11194 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11195 | |
a2ce51a0 DE |
11196 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11197 | return 0; | |
11198 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11199 | return lhs->comp_dir == rhs->comp_dir; | |
11200 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11201 | } |
11202 | ||
11203 | /* Allocate a hash table for DWO files. */ | |
11204 | ||
51ac9db5 | 11205 | static htab_up |
298e9637 | 11206 | allocate_dwo_file_hash_table () |
3019eac3 | 11207 | { |
51ac9db5 SM |
11208 | auto delete_dwo_file = [] (void *item) |
11209 | { | |
11210 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11211 | ||
11212 | delete dwo_file; | |
11213 | }; | |
11214 | ||
bc68fb19 TT |
11215 | return htab_up (htab_create_alloc (41, |
11216 | hash_dwo_file, | |
11217 | eq_dwo_file, | |
11218 | delete_dwo_file, | |
11219 | xcalloc, xfree)); | |
3019eac3 DE |
11220 | } |
11221 | ||
80626a55 DE |
11222 | /* Lookup DWO file DWO_NAME. */ |
11223 | ||
11224 | static void ** | |
ed2dc618 SM |
11225 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11226 | const char *dwo_name, | |
11227 | const char *comp_dir) | |
80626a55 DE |
11228 | { |
11229 | struct dwo_file find_entry; | |
11230 | void **slot; | |
11231 | ||
5989a64e SM |
11232 | if (dwarf2_per_objfile->per_bfd->dwo_files == NULL) |
11233 | dwarf2_per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11234 | |
0ac5b59e DE |
11235 | find_entry.dwo_name = dwo_name; |
11236 | find_entry.comp_dir = comp_dir; | |
5989a64e | 11237 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11238 | INSERT); |
80626a55 DE |
11239 | |
11240 | return slot; | |
11241 | } | |
11242 | ||
3019eac3 DE |
11243 | static hashval_t |
11244 | hash_dwo_unit (const void *item) | |
11245 | { | |
9a3c8263 | 11246 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11247 | |
11248 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11249 | return dwo_unit->signature; | |
11250 | } | |
11251 | ||
11252 | static int | |
11253 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11254 | { | |
9a3c8263 SM |
11255 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11256 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11257 | |
11258 | /* The signature is assumed to be unique within the DWO file. | |
11259 | So while object file CU dwo_id's always have the value zero, | |
11260 | that's OK, assuming each object file DWO file has only one CU, | |
11261 | and that's the rule for now. */ | |
11262 | return lhs->signature == rhs->signature; | |
11263 | } | |
11264 | ||
11265 | /* Allocate a hash table for DWO CUs,TUs. | |
11266 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11267 | ||
b0b6a987 | 11268 | static htab_up |
298e9637 | 11269 | allocate_dwo_unit_table () |
3019eac3 DE |
11270 | { |
11271 | /* Start out with a pretty small number. | |
11272 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11273 | return htab_up (htab_create_alloc (3, |
11274 | hash_dwo_unit, | |
11275 | eq_dwo_unit, | |
11276 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11277 | } |
11278 | ||
19c3d4c9 | 11279 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11280 | |
11281 | static void | |
19c3d4c9 DE |
11282 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11283 | const gdb_byte *info_ptr, | |
11284 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11285 | struct dwo_file *dwo_file, |
11286 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11287 | { |
11288 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11289 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11290 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11291 | |
a084a2a6 AT |
11292 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11293 | if (!signature.has_value ()) | |
3019eac3 | 11294 | { |
b98664d3 | 11295 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11296 | " its dwo_id [in module %s]"), |
9d8780f0 | 11297 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11298 | return; |
11299 | } | |
11300 | ||
3019eac3 | 11301 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11302 | dwo_unit->signature = *signature; |
8a0459fd | 11303 | dwo_unit->section = section; |
9c541725 | 11304 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11305 | dwo_unit->length = cu->per_cu->length; |
11306 | ||
b4f54984 | 11307 | if (dwarf_read_debug) |
9d8780f0 SM |
11308 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11309 | sect_offset_str (sect_off), | |
9c541725 | 11310 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11311 | } |
11312 | ||
33c5cd75 | 11313 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11314 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11315 | |
33c5cd75 | 11316 | static void |
ed2dc618 | 11317 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11318 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11319 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11320 | { |
11321 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
1859c670 | 11322 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
d521ce57 | 11323 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11324 | |
96b79293 | 11325 | section.read (objfile); |
33c5cd75 | 11326 | info_ptr = section.buffer; |
3019eac3 DE |
11327 | |
11328 | if (info_ptr == NULL) | |
33c5cd75 | 11329 | return; |
3019eac3 | 11330 | |
b4f54984 | 11331 | if (dwarf_read_debug) |
19c3d4c9 DE |
11332 | { |
11333 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11334 | section.get_name (), |
11335 | section.get_file_name ()); | |
19c3d4c9 | 11336 | } |
3019eac3 | 11337 | |
33c5cd75 | 11338 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11339 | while (info_ptr < end_ptr) |
11340 | { | |
11341 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11342 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11343 | struct dwo_unit *dwo_unit; |
11344 | void **slot; | |
11345 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11346 | |
11347 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11348 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11349 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11350 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11351 | per_cu.section = §ion; | |
11352 | ||
ab432490 | 11353 | cutu_reader reader (&per_cu, dwarf2_per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11354 | if (!reader.dummy_p) |
11355 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11356 | &dwo_file, &read_unit); |
33c5cd75 DB |
11357 | info_ptr += per_cu.length; |
11358 | ||
11359 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11360 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11361 | continue; |
3019eac3 | 11362 | |
33c5cd75 | 11363 | if (cus_htab == NULL) |
298e9637 | 11364 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11365 | |
1859c670 | 11366 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11367 | struct dwo_unit); |
c0ab21c2 | 11368 | *dwo_unit = read_unit; |
b0b6a987 | 11369 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11370 | gdb_assert (slot != NULL); |
11371 | if (*slot != NULL) | |
19c3d4c9 | 11372 | { |
33c5cd75 DB |
11373 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11374 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11375 | |
b98664d3 | 11376 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11377 | " the entry at offset %s, signature %s"), |
11378 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11379 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11380 | } |
33c5cd75 | 11381 | *slot = (void *)dwo_unit; |
3019eac3 | 11382 | } |
3019eac3 DE |
11383 | } |
11384 | ||
80626a55 DE |
11385 | /* DWP file .debug_{cu,tu}_index section format: |
11386 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11387 | ||
d2415c6c DE |
11388 | DWP Version 1: |
11389 | ||
80626a55 DE |
11390 | Both index sections have the same format, and serve to map a 64-bit |
11391 | signature to a set of section numbers. Each section begins with a header, | |
11392 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11393 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11394 | aligned at 8-byte boundaries in the file. | |
11395 | ||
d2415c6c DE |
11396 | The index section header consists of: |
11397 | ||
11398 | V, 32 bit version number | |
11399 | -, 32 bits unused | |
11400 | N, 32 bit number of compilation units or type units in the index | |
11401 | M, 32 bit number of slots in the hash table | |
80626a55 | 11402 | |
d2415c6c | 11403 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11404 | |
d2415c6c DE |
11405 | The hash table begins at offset 16 in the section, and consists of an array |
11406 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11407 | order of the application binary). Unused slots in the hash table are 0. | |
11408 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11409 | |
d2415c6c DE |
11410 | The parallel table begins immediately after the hash table |
11411 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11412 | array of 32-bit indexes (using the byte order of the application binary), | |
11413 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11414 | table contains a 32-bit index into the pool of section numbers. For unused | |
11415 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11416 | |
73869dc2 DE |
11417 | The pool of section numbers begins immediately following the hash table |
11418 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11419 | section numbers consists of an array of 32-bit words (using the byte order | |
11420 | of the application binary). Each item in the array is indexed starting | |
11421 | from 0. The hash table entry provides the index of the first section | |
11422 | number in the set. Additional section numbers in the set follow, and the | |
11423 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11424 | ||
11425 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11426 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11427 | be the second entry. Other members of the set may follow in any order. | |
11428 | ||
11429 | --- | |
11430 | ||
11431 | DWP Version 2: | |
11432 | ||
11433 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11434 | and the entries in the index tables are now offsets into these sections. | |
11435 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11436 | section. | |
11437 | ||
11438 | Index Section Contents: | |
11439 | Header | |
11440 | Hash Table of Signatures dwp_hash_table.hash_table | |
11441 | Parallel Table of Indices dwp_hash_table.unit_table | |
11442 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11443 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11444 | ||
11445 | The index section header consists of: | |
11446 | ||
11447 | V, 32 bit version number | |
11448 | L, 32 bit number of columns in the table of section offsets | |
11449 | N, 32 bit number of compilation units or type units in the index | |
11450 | M, 32 bit number of slots in the hash table | |
11451 | ||
11452 | Numbers are recorded using the byte order of the application binary. | |
11453 | ||
11454 | The hash table has the same format as version 1. | |
11455 | The parallel table of indices has the same format as version 1, | |
11456 | except that the entries are origin-1 indices into the table of sections | |
11457 | offsets and the table of section sizes. | |
11458 | ||
11459 | The table of offsets begins immediately following the parallel table | |
11460 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11461 | a two-dimensional array of 32-bit words (using the byte order of the | |
11462 | application binary), with L columns and N+1 rows, in row-major order. | |
11463 | Each row in the array is indexed starting from 0. The first row provides | |
11464 | a key to the remaining rows: each column in this row provides an identifier | |
11465 | for a debug section, and the offsets in the same column of subsequent rows | |
11466 | refer to that section. The section identifiers are: | |
11467 | ||
11468 | DW_SECT_INFO 1 .debug_info.dwo | |
11469 | DW_SECT_TYPES 2 .debug_types.dwo | |
11470 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11471 | DW_SECT_LINE 4 .debug_line.dwo | |
11472 | DW_SECT_LOC 5 .debug_loc.dwo | |
11473 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11474 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11475 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11476 | ||
11477 | The offsets provided by the CU and TU index sections are the base offsets | |
11478 | for the contributions made by each CU or TU to the corresponding section | |
11479 | in the package file. Each CU and TU header contains an abbrev_offset | |
11480 | field, used to find the abbreviations table for that CU or TU within the | |
11481 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11482 | be interpreted as relative to the base offset given in the index section. | |
11483 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11484 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11485 | and offsets into other debug sections obtained from DWARF attributes should | |
11486 | also be interpreted as relative to the corresponding base offset. | |
11487 | ||
11488 | The table of sizes begins immediately following the table of offsets. | |
11489 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11490 | with L columns and N rows, in row-major order. Each row in the array is | |
11491 | indexed starting from 1 (row 0 is shared by the two tables). | |
11492 | ||
11493 | --- | |
11494 | ||
11495 | Hash table lookup is handled the same in version 1 and 2: | |
11496 | ||
11497 | We assume that N and M will not exceed 2^32 - 1. | |
11498 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11499 | ||
d2415c6c DE |
11500 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11501 | in the hash table is located as follows: | |
80626a55 | 11502 | |
d2415c6c DE |
11503 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11504 | the low-order k bits all set to 1. | |
80626a55 | 11505 | |
d2415c6c | 11506 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11507 | |
d2415c6c DE |
11508 | 3) If the hash table entry at index H matches the signature, use that |
11509 | entry. If the hash table entry at index H is unused (all zeroes), | |
11510 | terminate the search: the signature is not present in the table. | |
80626a55 | 11511 | |
d2415c6c | 11512 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11513 | |
d2415c6c | 11514 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11515 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11516 | |
11517 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11518 | .debug_{info,types}.dwo in DWP_FILE. | |
11519 | Returns NULL if there isn't one. | |
11520 | Note: This function processes DWP files only, not DWO files. */ | |
11521 | ||
11522 | static struct dwp_hash_table * | |
ed2dc618 SM |
11523 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11524 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11525 | { |
11526 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11527 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11528 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11529 | struct dwarf2_section_info *index; |
73869dc2 | 11530 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11531 | struct dwp_hash_table *htab; |
11532 | ||
11533 | if (is_debug_types) | |
11534 | index = &dwp_file->sections.tu_index; | |
11535 | else | |
11536 | index = &dwp_file->sections.cu_index; | |
11537 | ||
96b79293 | 11538 | if (index->empty ()) |
80626a55 | 11539 | return NULL; |
96b79293 | 11540 | index->read (objfile); |
80626a55 DE |
11541 | |
11542 | index_ptr = index->buffer; | |
11543 | index_end = index_ptr + index->size; | |
11544 | ||
11545 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11546 | index_ptr += 4; |
11547 | if (version == 2) | |
11548 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11549 | else | |
11550 | nr_columns = 0; | |
11551 | index_ptr += 4; | |
80626a55 DE |
11552 | nr_units = read_4_bytes (dbfd, index_ptr); |
11553 | index_ptr += 4; | |
11554 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11555 | index_ptr += 4; | |
11556 | ||
73869dc2 | 11557 | if (version != 1 && version != 2) |
80626a55 | 11558 | { |
21aa081e | 11559 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11560 | " [in module %s]"), |
21aa081e | 11561 | pulongest (version), dwp_file->name); |
80626a55 DE |
11562 | } |
11563 | if (nr_slots != (nr_slots & -nr_slots)) | |
11564 | { | |
21aa081e | 11565 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11566 | " is not power of 2 [in module %s]"), |
21aa081e | 11567 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11568 | } |
11569 | ||
5989a64e | 11570 | htab = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11571 | htab->version = version; |
11572 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11573 | htab->nr_units = nr_units; |
11574 | htab->nr_slots = nr_slots; | |
11575 | htab->hash_table = index_ptr; | |
11576 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11577 | |
11578 | /* Exit early if the table is empty. */ | |
11579 | if (nr_slots == 0 || nr_units == 0 | |
11580 | || (version == 2 && nr_columns == 0)) | |
11581 | { | |
11582 | /* All must be zero. */ | |
11583 | if (nr_slots != 0 || nr_units != 0 | |
11584 | || (version == 2 && nr_columns != 0)) | |
11585 | { | |
b98664d3 | 11586 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11587 | " all zero [in modules %s]"), |
11588 | dwp_file->name); | |
11589 | } | |
11590 | return htab; | |
11591 | } | |
11592 | ||
11593 | if (version == 1) | |
11594 | { | |
11595 | htab->section_pool.v1.indices = | |
11596 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11597 | /* It's harder to decide whether the section is too small in v1. | |
11598 | V1 is deprecated anyway so we punt. */ | |
11599 | } | |
11600 | else | |
11601 | { | |
11602 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11603 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11604 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11605 | /* Reverse map for error checking. */ |
11606 | int ids_seen[DW_SECT_MAX + 1]; | |
11607 | int i; | |
11608 | ||
11609 | if (nr_columns < 2) | |
11610 | { | |
11611 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11612 | " in section table [in module %s]"), | |
11613 | dwp_file->name); | |
11614 | } | |
11615 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11616 | { | |
11617 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11618 | " in section table [in module %s]"), | |
11619 | dwp_file->name); | |
11620 | } | |
04fd5eed GB |
11621 | memset (ids, 255, sizeof_ids); |
11622 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11623 | for (i = 0; i < nr_columns; ++i) |
11624 | { | |
11625 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11626 | ||
11627 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11628 | { | |
11629 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11630 | " in section table [in module %s]"), | |
11631 | id, dwp_file->name); | |
11632 | } | |
11633 | if (ids_seen[id] != -1) | |
11634 | { | |
11635 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11636 | " id %d in section table [in module %s]"), | |
11637 | id, dwp_file->name); | |
11638 | } | |
11639 | ids_seen[id] = i; | |
11640 | ids[i] = id; | |
11641 | } | |
11642 | /* Must have exactly one info or types section. */ | |
11643 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11644 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11645 | != 1) | |
11646 | { | |
11647 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11648 | " DWO info/types section [in module %s]"), | |
11649 | dwp_file->name); | |
11650 | } | |
11651 | /* Must have an abbrev section. */ | |
11652 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11653 | { | |
11654 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11655 | " section [in module %s]"), | |
11656 | dwp_file->name); | |
11657 | } | |
11658 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11659 | htab->section_pool.v2.sizes = | |
11660 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11661 | * nr_units * nr_columns); | |
11662 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11663 | * nr_units * nr_columns)) | |
11664 | > index_end) | |
11665 | { | |
11666 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11667 | " [in module %s]"), | |
11668 | dwp_file->name); | |
11669 | } | |
11670 | } | |
80626a55 DE |
11671 | |
11672 | return htab; | |
11673 | } | |
11674 | ||
11675 | /* Update SECTIONS with the data from SECTP. | |
11676 | ||
11677 | This function is like the other "locate" section routines that are | |
11678 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11679 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11680 | |
11681 | The result is non-zero for success, or zero if an error was found. */ | |
11682 | ||
11683 | static int | |
73869dc2 DE |
11684 | locate_v1_virtual_dwo_sections (asection *sectp, |
11685 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11686 | { |
11687 | const struct dwop_section_names *names = &dwop_section_names; | |
11688 | ||
11689 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11690 | { | |
11691 | /* There can be only one. */ | |
049412e3 | 11692 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11693 | return 0; |
049412e3 | 11694 | sections->abbrev.s.section = sectp; |
fd361982 | 11695 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11696 | } |
11697 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11698 | || section_is_p (sectp->name, &names->types_dwo)) | |
11699 | { | |
11700 | /* There can be only one. */ | |
049412e3 | 11701 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11702 | return 0; |
049412e3 | 11703 | sections->info_or_types.s.section = sectp; |
fd361982 | 11704 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11705 | } |
11706 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11707 | { | |
11708 | /* There can be only one. */ | |
049412e3 | 11709 | if (sections->line.s.section != NULL) |
80626a55 | 11710 | return 0; |
049412e3 | 11711 | sections->line.s.section = sectp; |
fd361982 | 11712 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11713 | } |
11714 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11715 | { | |
11716 | /* There can be only one. */ | |
049412e3 | 11717 | if (sections->loc.s.section != NULL) |
80626a55 | 11718 | return 0; |
049412e3 | 11719 | sections->loc.s.section = sectp; |
fd361982 | 11720 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11721 | } |
11722 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11723 | { | |
11724 | /* There can be only one. */ | |
049412e3 | 11725 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11726 | return 0; |
049412e3 | 11727 | sections->macinfo.s.section = sectp; |
fd361982 | 11728 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11729 | } |
11730 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11731 | { | |
11732 | /* There can be only one. */ | |
049412e3 | 11733 | if (sections->macro.s.section != NULL) |
80626a55 | 11734 | return 0; |
049412e3 | 11735 | sections->macro.s.section = sectp; |
fd361982 | 11736 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11737 | } |
11738 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11739 | { | |
11740 | /* There can be only one. */ | |
049412e3 | 11741 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11742 | return 0; |
049412e3 | 11743 | sections->str_offsets.s.section = sectp; |
fd361982 | 11744 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11745 | } |
11746 | else | |
11747 | { | |
11748 | /* No other kind of section is valid. */ | |
11749 | return 0; | |
11750 | } | |
11751 | ||
11752 | return 1; | |
11753 | } | |
11754 | ||
73869dc2 DE |
11755 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11756 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11757 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11758 | This is for DWP version 1 files. */ | |
80626a55 DE |
11759 | |
11760 | static struct dwo_unit * | |
ed2dc618 SM |
11761 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11762 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11763 | uint32_t unit_index, |
11764 | const char *comp_dir, | |
11765 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11766 | { |
73869dc2 DE |
11767 | const struct dwp_hash_table *dwp_htab = |
11768 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11769 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11770 | const char *kind = is_debug_types ? "TU" : "CU"; |
11771 | struct dwo_file *dwo_file; | |
11772 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11773 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11774 | void **dwo_file_slot; |
80626a55 DE |
11775 | int i; |
11776 | ||
73869dc2 DE |
11777 | gdb_assert (dwp_file->version == 1); |
11778 | ||
b4f54984 | 11779 | if (dwarf_read_debug) |
80626a55 | 11780 | { |
73869dc2 | 11781 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11782 | kind, |
73869dc2 | 11783 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11784 | dwp_file->name); |
11785 | } | |
11786 | ||
19ac8c2e | 11787 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11788 | Put a limit on the number of sections we look for so that bad data |
11789 | doesn't cause us to loop forever. */ | |
11790 | ||
73869dc2 | 11791 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11792 | (1 /* .debug_info or .debug_types */ \ |
11793 | + 1 /* .debug_abbrev */ \ | |
11794 | + 1 /* .debug_line */ \ | |
11795 | + 1 /* .debug_loc */ \ | |
11796 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11797 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11798 | + 1 /* trailing zero */) |
11799 | ||
11800 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11801 | |
73869dc2 | 11802 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11803 | { |
11804 | asection *sectp; | |
11805 | uint32_t section_nr = | |
11806 | read_4_bytes (dbfd, | |
73869dc2 DE |
11807 | dwp_htab->section_pool.v1.indices |
11808 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11809 | |
11810 | if (section_nr == 0) | |
11811 | break; | |
11812 | if (section_nr >= dwp_file->num_sections) | |
11813 | { | |
11814 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11815 | " [in module %s]"), | |
11816 | dwp_file->name); | |
11817 | } | |
11818 | ||
11819 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11820 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11821 | { |
11822 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11823 | " [in module %s]"), | |
11824 | dwp_file->name); | |
11825 | } | |
11826 | } | |
11827 | ||
11828 | if (i < 2 | |
96b79293 TT |
11829 | || sections.info_or_types.empty () |
11830 | || sections.abbrev.empty ()) | |
80626a55 DE |
11831 | { |
11832 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11833 | " [in module %s]"), | |
11834 | dwp_file->name); | |
11835 | } | |
73869dc2 | 11836 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11837 | { |
11838 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11839 | " [in module %s]"), | |
11840 | dwp_file->name); | |
11841 | } | |
11842 | ||
11843 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11844 | have dwo_unit "live" in that. At least for now. | |
11845 | ||
11846 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11847 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11848 | file, we can combine them back into a virtual DWO file to save space |
11849 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11850 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11851 | ||
791afaa2 TT |
11852 | std::string virtual_dwo_name = |
11853 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11854 | sections.abbrev.get_id (), |
11855 | sections.line.get_id (), | |
11856 | sections.loc.get_id (), | |
11857 | sections.str_offsets.get_id ()); | |
80626a55 | 11858 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11859 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11860 | virtual_dwo_name.c_str (), | |
11861 | comp_dir); | |
80626a55 DE |
11862 | /* Create one if necessary. */ |
11863 | if (*dwo_file_slot == NULL) | |
11864 | { | |
b4f54984 | 11865 | if (dwarf_read_debug) |
80626a55 DE |
11866 | { |
11867 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11868 | virtual_dwo_name.c_str ()); |
80626a55 | 11869 | } |
51ac9db5 | 11870 | dwo_file = new struct dwo_file; |
45940949 | 11871 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11872 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11873 | dwo_file->sections.abbrev = sections.abbrev; |
11874 | dwo_file->sections.line = sections.line; | |
11875 | dwo_file->sections.loc = sections.loc; | |
11876 | dwo_file->sections.macinfo = sections.macinfo; | |
11877 | dwo_file->sections.macro = sections.macro; | |
11878 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11879 | /* The "str" section is global to the entire DWP file. */ | |
11880 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11881 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11882 | there's no need to record it in dwo_file. |
11883 | Also, we can't simply record type sections in dwo_file because | |
11884 | we record a pointer into the vector in dwo_unit. As we collect more | |
11885 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11886 | for it, invalidating all copies of pointers into the previous |
11887 | contents. */ | |
80626a55 DE |
11888 | *dwo_file_slot = dwo_file; |
11889 | } | |
11890 | else | |
11891 | { | |
b4f54984 | 11892 | if (dwarf_read_debug) |
80626a55 DE |
11893 | { |
11894 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11895 | virtual_dwo_name.c_str ()); |
80626a55 | 11896 | } |
9a3c8263 | 11897 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11898 | } |
80626a55 | 11899 | |
5989a64e | 11900 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11901 | dwo_unit->dwo_file = dwo_file; |
11902 | dwo_unit->signature = signature; | |
8d749320 | 11903 | dwo_unit->section = |
5989a64e | 11904 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11905 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11906 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11907 | |
11908 | return dwo_unit; | |
11909 | } | |
11910 | ||
73869dc2 DE |
11911 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11912 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11913 | piece within that section used by a TU/CU, return a virtual section | |
11914 | of just that piece. */ | |
11915 | ||
11916 | static struct dwarf2_section_info | |
ed2dc618 SM |
11917 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11918 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11919 | bfd_size_type offset, bfd_size_type size) |
11920 | { | |
11921 | struct dwarf2_section_info result; | |
11922 | asection *sectp; | |
11923 | ||
11924 | gdb_assert (section != NULL); | |
11925 | gdb_assert (!section->is_virtual); | |
11926 | ||
11927 | memset (&result, 0, sizeof (result)); | |
11928 | result.s.containing_section = section; | |
dc4ccb6f | 11929 | result.is_virtual = true; |
73869dc2 DE |
11930 | |
11931 | if (size == 0) | |
11932 | return result; | |
11933 | ||
96b79293 | 11934 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11935 | |
11936 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11937 | bounds of the real section. This is a pretty-rare event, so just | |
11938 | flag an error (easier) instead of a warning and trying to cope. */ | |
11939 | if (sectp == NULL | |
fd361982 | 11940 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11941 | { |
73869dc2 DE |
11942 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11943 | " in section %s [in module %s]"), | |
fd361982 | 11944 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11945 | objfile_name (dwarf2_per_objfile->objfile)); |
11946 | } | |
11947 | ||
11948 | result.virtual_offset = offset; | |
11949 | result.size = size; | |
11950 | return result; | |
11951 | } | |
11952 | ||
11953 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11954 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11955 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11956 | This is for DWP version 2 files. */ | |
11957 | ||
11958 | static struct dwo_unit * | |
ed2dc618 SM |
11959 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11960 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11961 | uint32_t unit_index, |
11962 | const char *comp_dir, | |
11963 | ULONGEST signature, int is_debug_types) | |
11964 | { | |
73869dc2 DE |
11965 | const struct dwp_hash_table *dwp_htab = |
11966 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11967 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11968 | const char *kind = is_debug_types ? "TU" : "CU"; |
11969 | struct dwo_file *dwo_file; | |
11970 | struct dwo_unit *dwo_unit; | |
11971 | struct virtual_v2_dwo_sections sections; | |
11972 | void **dwo_file_slot; | |
73869dc2 DE |
11973 | int i; |
11974 | ||
11975 | gdb_assert (dwp_file->version == 2); | |
11976 | ||
b4f54984 | 11977 | if (dwarf_read_debug) |
73869dc2 DE |
11978 | { |
11979 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11980 | kind, | |
11981 | pulongest (unit_index), hex_string (signature), | |
11982 | dwp_file->name); | |
11983 | } | |
11984 | ||
11985 | /* Fetch the section offsets of this DWO unit. */ | |
11986 | ||
11987 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11988 | |
11989 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11990 | { | |
11991 | uint32_t offset = read_4_bytes (dbfd, | |
11992 | dwp_htab->section_pool.v2.offsets | |
11993 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11994 | + i) | |
11995 | * sizeof (uint32_t))); | |
11996 | uint32_t size = read_4_bytes (dbfd, | |
11997 | dwp_htab->section_pool.v2.sizes | |
11998 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11999 | + i) | |
12000 | * sizeof (uint32_t))); | |
12001 | ||
12002 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12003 | { | |
12004 | case DW_SECT_INFO: | |
12005 | case DW_SECT_TYPES: | |
12006 | sections.info_or_types_offset = offset; | |
12007 | sections.info_or_types_size = size; | |
12008 | break; | |
12009 | case DW_SECT_ABBREV: | |
12010 | sections.abbrev_offset = offset; | |
12011 | sections.abbrev_size = size; | |
12012 | break; | |
12013 | case DW_SECT_LINE: | |
12014 | sections.line_offset = offset; | |
12015 | sections.line_size = size; | |
12016 | break; | |
12017 | case DW_SECT_LOC: | |
12018 | sections.loc_offset = offset; | |
12019 | sections.loc_size = size; | |
12020 | break; | |
12021 | case DW_SECT_STR_OFFSETS: | |
12022 | sections.str_offsets_offset = offset; | |
12023 | sections.str_offsets_size = size; | |
12024 | break; | |
12025 | case DW_SECT_MACINFO: | |
12026 | sections.macinfo_offset = offset; | |
12027 | sections.macinfo_size = size; | |
12028 | break; | |
12029 | case DW_SECT_MACRO: | |
12030 | sections.macro_offset = offset; | |
12031 | sections.macro_size = size; | |
12032 | break; | |
12033 | } | |
12034 | } | |
12035 | ||
12036 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12037 | have dwo_unit "live" in that. At least for now. | |
12038 | ||
12039 | The DWP file can be made up of a random collection of CUs and TUs. | |
12040 | However, for each CU + set of TUs that came from the same original DWO | |
12041 | file, we can combine them back into a virtual DWO file to save space | |
12042 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12043 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12044 | ||
791afaa2 TT |
12045 | std::string virtual_dwo_name = |
12046 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12047 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12048 | (long) (sections.line_size ? sections.line_offset : 0), | |
12049 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12050 | (long) (sections.str_offsets_size | |
12051 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12052 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12053 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12054 | virtual_dwo_name.c_str (), | |
12055 | comp_dir); | |
73869dc2 DE |
12056 | /* Create one if necessary. */ |
12057 | if (*dwo_file_slot == NULL) | |
12058 | { | |
b4f54984 | 12059 | if (dwarf_read_debug) |
73869dc2 DE |
12060 | { |
12061 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12062 | virtual_dwo_name.c_str ()); |
73869dc2 | 12063 | } |
51ac9db5 | 12064 | dwo_file = new struct dwo_file; |
45940949 | 12065 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12066 | dwo_file->comp_dir = comp_dir; |
12067 | dwo_file->sections.abbrev = | |
ed2dc618 | 12068 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12069 | sections.abbrev_offset, sections.abbrev_size); |
12070 | dwo_file->sections.line = | |
ed2dc618 | 12071 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12072 | sections.line_offset, sections.line_size); |
12073 | dwo_file->sections.loc = | |
ed2dc618 | 12074 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12075 | sections.loc_offset, sections.loc_size); |
12076 | dwo_file->sections.macinfo = | |
ed2dc618 | 12077 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12078 | sections.macinfo_offset, sections.macinfo_size); |
12079 | dwo_file->sections.macro = | |
ed2dc618 | 12080 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12081 | sections.macro_offset, sections.macro_size); |
12082 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12083 | create_dwp_v2_section (dwarf2_per_objfile, |
12084 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12085 | sections.str_offsets_offset, |
12086 | sections.str_offsets_size); | |
12087 | /* The "str" section is global to the entire DWP file. */ | |
12088 | dwo_file->sections.str = dwp_file->sections.str; | |
12089 | /* The info or types section is assigned below to dwo_unit, | |
12090 | there's no need to record it in dwo_file. | |
12091 | Also, we can't simply record type sections in dwo_file because | |
12092 | we record a pointer into the vector in dwo_unit. As we collect more | |
12093 | types we'll grow the vector and eventually have to reallocate space | |
12094 | for it, invalidating all copies of pointers into the previous | |
12095 | contents. */ | |
12096 | *dwo_file_slot = dwo_file; | |
12097 | } | |
12098 | else | |
12099 | { | |
b4f54984 | 12100 | if (dwarf_read_debug) |
73869dc2 DE |
12101 | { |
12102 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12103 | virtual_dwo_name.c_str ()); |
73869dc2 | 12104 | } |
9a3c8263 | 12105 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12106 | } |
73869dc2 | 12107 | |
5989a64e | 12108 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12109 | dwo_unit->dwo_file = dwo_file; |
12110 | dwo_unit->signature = signature; | |
8d749320 | 12111 | dwo_unit->section = |
5989a64e | 12112 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
ed2dc618 SM |
12113 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12114 | is_debug_types | |
73869dc2 DE |
12115 | ? &dwp_file->sections.types |
12116 | : &dwp_file->sections.info, | |
12117 | sections.info_or_types_offset, | |
12118 | sections.info_or_types_size); | |
12119 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12120 | ||
12121 | return dwo_unit; | |
12122 | } | |
12123 | ||
57d63ce2 DE |
12124 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12125 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12126 | |
12127 | static struct dwo_unit * | |
ed2dc618 SM |
12128 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12129 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12130 | ULONGEST signature, int is_debug_types) |
80626a55 | 12131 | { |
57d63ce2 DE |
12132 | const struct dwp_hash_table *dwp_htab = |
12133 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12134 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12135 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12136 | uint32_t hash = signature & mask; |
12137 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12138 | unsigned int i; | |
12139 | void **slot; | |
870f88f7 | 12140 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12141 | |
12142 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12143 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12144 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12145 | ? dwp_file->loaded_tus.get () |
12146 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12147 | &find_dwo_cu, INSERT); |
80626a55 DE |
12148 | |
12149 | if (*slot != NULL) | |
9a3c8263 | 12150 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12151 | |
12152 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12153 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12154 | { |
12155 | ULONGEST signature_in_table; | |
12156 | ||
12157 | signature_in_table = | |
57d63ce2 | 12158 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12159 | if (signature_in_table == signature) |
12160 | { | |
57d63ce2 DE |
12161 | uint32_t unit_index = |
12162 | read_4_bytes (dbfd, | |
12163 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12164 | |
73869dc2 DE |
12165 | if (dwp_file->version == 1) |
12166 | { | |
ed2dc618 SM |
12167 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12168 | dwp_file, unit_index, | |
73869dc2 DE |
12169 | comp_dir, signature, |
12170 | is_debug_types); | |
12171 | } | |
12172 | else | |
12173 | { | |
ed2dc618 SM |
12174 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12175 | dwp_file, unit_index, | |
73869dc2 DE |
12176 | comp_dir, signature, |
12177 | is_debug_types); | |
12178 | } | |
9a3c8263 | 12179 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12180 | } |
12181 | if (signature_in_table == 0) | |
12182 | return NULL; | |
12183 | hash = (hash + hash2) & mask; | |
12184 | } | |
12185 | ||
12186 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12187 | " [in module %s]"), | |
12188 | dwp_file->name); | |
12189 | } | |
12190 | ||
ab5088bf | 12191 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12192 | Open the file specified by FILE_NAME and hand it off to BFD for |
12193 | preliminary analysis. Return a newly initialized bfd *, which | |
12194 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12195 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12196 | SEARCH_CWD is true if the current directory is to be searched. |
12197 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12198 | If successful, the file is added to the bfd include table of the |
12199 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12200 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12201 | NOTE: This function is derived from symfile_bfd_open. */ |
12202 | ||
192b62ce | 12203 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12204 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12205 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12206 | { |
24b9144d | 12207 | int desc; |
9c02c129 DE |
12208 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12209 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12210 | to debug_file_directory. */ | |
e0cc99a6 | 12211 | const char *search_path; |
9c02c129 DE |
12212 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12213 | ||
e0cc99a6 | 12214 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12215 | if (search_cwd) |
12216 | { | |
12217 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12218 | { |
12219 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12220 | debug_file_directory, | |
12221 | (char *) NULL)); | |
12222 | search_path = search_path_holder.get (); | |
12223 | } | |
6ac97d4c | 12224 | else |
e0cc99a6 | 12225 | search_path = "."; |
6ac97d4c | 12226 | } |
9c02c129 | 12227 | else |
e0cc99a6 | 12228 | search_path = debug_file_directory; |
3019eac3 | 12229 | |
24b9144d | 12230 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12231 | if (is_dwp) |
12232 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12233 | |
12234 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12235 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12236 | O_RDONLY | O_BINARY, &absolute_name); |
12237 | if (desc < 0) | |
12238 | return NULL; | |
12239 | ||
e0cc99a6 TT |
12240 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12241 | gnutarget, desc)); | |
9c02c129 DE |
12242 | if (sym_bfd == NULL) |
12243 | return NULL; | |
192b62ce | 12244 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12245 | |
192b62ce TT |
12246 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12247 | return NULL; | |
3019eac3 | 12248 | |
13aaf454 DE |
12249 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12250 | This is important because things like demangled_names_hash lives in the | |
12251 | objfile's per_bfd space and may have references to things like symbol | |
12252 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12253 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12254 | |
3019eac3 DE |
12255 | return sym_bfd; |
12256 | } | |
12257 | ||
ab5088bf | 12258 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12259 | COMP_DIR is the DW_AT_comp_dir attribute. |
12260 | The result is the bfd handle of the file. | |
12261 | If there is a problem finding or opening the file, return NULL. | |
12262 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12263 | same as symfile_bfd_open. */ | |
12264 | ||
192b62ce | 12265 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12266 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12267 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12268 | { |
80626a55 | 12269 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12270 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12271 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12272 | |
12273 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12274 | ||
12275 | if (comp_dir != NULL) | |
12276 | { | |
43816ebc TT |
12277 | gdb::unique_xmalloc_ptr<char> path_to_try |
12278 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12279 | |
12280 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12281 | search path, which seems useful. */ | |
ed2dc618 | 12282 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12283 | path_to_try.get (), |
ed2dc618 | 12284 | 0 /*is_dwp*/, |
192b62ce | 12285 | 1 /*search_cwd*/)); |
3019eac3 DE |
12286 | if (abfd != NULL) |
12287 | return abfd; | |
12288 | } | |
12289 | ||
12290 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12291 | is a list of paths. */ | |
12292 | ||
12293 | if (*debug_file_directory == '\0') | |
12294 | return NULL; | |
12295 | ||
ed2dc618 SM |
12296 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12297 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12298 | } |
12299 | ||
80626a55 DE |
12300 | /* This function is mapped across the sections and remembers the offset and |
12301 | size of each of the DWO debugging sections we are interested in. */ | |
12302 | ||
12303 | static void | |
12304 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12305 | { | |
9a3c8263 | 12306 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12307 | const struct dwop_section_names *names = &dwop_section_names; |
12308 | ||
12309 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12310 | { | |
049412e3 | 12311 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12312 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12313 | } |
12314 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12315 | { | |
049412e3 | 12316 | dwo_sections->info.s.section = sectp; |
fd361982 | 12317 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12318 | } |
12319 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12320 | { | |
049412e3 | 12321 | dwo_sections->line.s.section = sectp; |
fd361982 | 12322 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12323 | } |
12324 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12325 | { | |
049412e3 | 12326 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12327 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12328 | } |
41144253 | 12329 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12330 | { | |
12331 | dwo_sections->loclists.s.section = sectp; | |
12332 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12333 | } | |
80626a55 DE |
12334 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12335 | { | |
049412e3 | 12336 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12337 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12338 | } |
12339 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12340 | { | |
049412e3 | 12341 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12342 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12343 | } |
12344 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12345 | { | |
049412e3 | 12346 | dwo_sections->str.s.section = sectp; |
fd361982 | 12347 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12348 | } |
12349 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12350 | { | |
049412e3 | 12351 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12352 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12353 | } |
12354 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12355 | { | |
12356 | struct dwarf2_section_info type_section; | |
12357 | ||
12358 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12359 | type_section.s.section = sectp; |
fd361982 | 12360 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12361 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12362 | } |
12363 | } | |
12364 | ||
ab5088bf | 12365 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12366 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12367 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12368 | |
12369 | static struct dwo_file * | |
4ab09049 SM |
12370 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12371 | const char *comp_dir) | |
3019eac3 | 12372 | { |
4ab09049 | 12373 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 12374 | |
fb1eb2f9 | 12375 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12376 | if (dbfd == NULL) |
12377 | { | |
b4f54984 | 12378 | if (dwarf_read_debug) |
80626a55 DE |
12379 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12380 | return NULL; | |
12381 | } | |
263db9a1 | 12382 | |
51ac9db5 | 12383 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12384 | dwo_file->dwo_name = dwo_name; |
12385 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12386 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12387 | |
fb1eb2f9 | 12388 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12389 | &dwo_file->sections); |
3019eac3 | 12390 | |
4ab09049 | 12391 | create_cus_hash_table (dwarf2_per_objfile, cu, *dwo_file, |
18a8505e | 12392 | dwo_file->sections.info, dwo_file->cus); |
3019eac3 | 12393 | |
263db9a1 | 12394 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12395 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12396 | |
b4f54984 | 12397 | if (dwarf_read_debug) |
80626a55 DE |
12398 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12399 | ||
263db9a1 | 12400 | return dwo_file.release (); |
3019eac3 DE |
12401 | } |
12402 | ||
80626a55 | 12403 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12404 | size of each of the DWP debugging sections common to version 1 and 2 that |
12405 | we are interested in. */ | |
3019eac3 | 12406 | |
80626a55 | 12407 | static void |
73869dc2 DE |
12408 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12409 | void *dwp_file_ptr) | |
3019eac3 | 12410 | { |
9a3c8263 | 12411 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12412 | const struct dwop_section_names *names = &dwop_section_names; |
12413 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12414 | |
80626a55 | 12415 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12416 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12417 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12418 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12419 | |
80626a55 DE |
12420 | /* Look for specific sections that we need. */ |
12421 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12422 | { | |
049412e3 | 12423 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12424 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12425 | } |
12426 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12427 | { | |
049412e3 | 12428 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12429 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12430 | } |
12431 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12432 | { | |
049412e3 | 12433 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12434 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12435 | } |
12436 | } | |
3019eac3 | 12437 | |
73869dc2 DE |
12438 | /* This function is mapped across the sections and remembers the offset and |
12439 | size of each of the DWP version 2 debugging sections that we are interested | |
12440 | in. This is split into a separate function because we don't know if we | |
12441 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12442 | ||
12443 | static void | |
12444 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12445 | { | |
9a3c8263 | 12446 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12447 | const struct dwop_section_names *names = &dwop_section_names; |
12448 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12449 | ||
12450 | /* Record the ELF section number for later lookup: this is what the | |
12451 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12452 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12453 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12454 | ||
12455 | /* Look for specific sections that we need. */ | |
12456 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12457 | { | |
049412e3 | 12458 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12459 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12460 | } |
12461 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12462 | { | |
049412e3 | 12463 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12464 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12465 | } |
12466 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12467 | { | |
049412e3 | 12468 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12469 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12470 | } |
12471 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12472 | { | |
049412e3 | 12473 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12474 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12475 | } |
12476 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12477 | { | |
049412e3 | 12478 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12479 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12480 | } |
12481 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12482 | { | |
049412e3 | 12483 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12484 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12485 | } |
12486 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12487 | { | |
049412e3 | 12488 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12489 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12490 | } |
12491 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12492 | { | |
049412e3 | 12493 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12494 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12495 | } |
12496 | } | |
12497 | ||
80626a55 | 12498 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12499 | |
80626a55 DE |
12500 | static hashval_t |
12501 | hash_dwp_loaded_cutus (const void *item) | |
12502 | { | |
9a3c8263 | 12503 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12504 | |
80626a55 DE |
12505 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12506 | return dwo_unit->signature; | |
3019eac3 DE |
12507 | } |
12508 | ||
80626a55 | 12509 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12510 | |
80626a55 DE |
12511 | static int |
12512 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12513 | { |
9a3c8263 SM |
12514 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12515 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12516 | |
80626a55 DE |
12517 | return dua->signature == dub->signature; |
12518 | } | |
3019eac3 | 12519 | |
80626a55 | 12520 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12521 | |
48b490f2 | 12522 | static htab_up |
298e9637 | 12523 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12524 | { |
48b490f2 TT |
12525 | return htab_up (htab_create_alloc (3, |
12526 | hash_dwp_loaded_cutus, | |
12527 | eq_dwp_loaded_cutus, | |
12528 | NULL, xcalloc, xfree)); | |
80626a55 | 12529 | } |
3019eac3 | 12530 | |
ab5088bf DE |
12531 | /* Try to open DWP file FILE_NAME. |
12532 | The result is the bfd handle of the file. | |
12533 | If there is a problem finding or opening the file, return NULL. | |
12534 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12535 | same as symfile_bfd_open. */ | |
12536 | ||
192b62ce | 12537 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12538 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12539 | const char *file_name) | |
ab5088bf | 12540 | { |
ed2dc618 SM |
12541 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12542 | 1 /*is_dwp*/, | |
192b62ce | 12543 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12544 | if (abfd != NULL) |
12545 | return abfd; | |
12546 | ||
12547 | /* Work around upstream bug 15652. | |
12548 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12549 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12550 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12551 | of the executable's path may have discarded the needed info. | |
12552 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12553 | .gnu_debuglink, but that doesn't exist yet.] | |
12554 | Strip the directory from FILE_NAME and search again. */ | |
12555 | if (*debug_file_directory != '\0') | |
12556 | { | |
12557 | /* Don't implicitly search the current directory here. | |
12558 | If the user wants to search "." to handle this case, | |
12559 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12560 | return try_open_dwop_file (dwarf2_per_objfile, |
12561 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12562 | 0 /*search_cwd*/); |
12563 | } | |
12564 | ||
12565 | return NULL; | |
ab5088bf DE |
12566 | } |
12567 | ||
80626a55 DE |
12568 | /* Initialize the use of the DWP file for the current objfile. |
12569 | By convention the name of the DWP file is ${objfile}.dwp. | |
12570 | The result is NULL if it can't be found. */ | |
a766d390 | 12571 | |
400174b1 | 12572 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12573 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12574 | { |
12575 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12576 | |
82bf32bc JK |
12577 | /* Try to find first .dwp for the binary file before any symbolic links |
12578 | resolving. */ | |
6c447423 DE |
12579 | |
12580 | /* If the objfile is a debug file, find the name of the real binary | |
12581 | file and get the name of dwp file from there. */ | |
d721ba37 | 12582 | std::string dwp_name; |
6c447423 DE |
12583 | if (objfile->separate_debug_objfile_backlink != NULL) |
12584 | { | |
12585 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12586 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12587 | |
d721ba37 | 12588 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12589 | } |
12590 | else | |
d721ba37 PA |
12591 | dwp_name = objfile->original_name; |
12592 | ||
12593 | dwp_name += ".dwp"; | |
80626a55 | 12594 | |
ed2dc618 | 12595 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12596 | if (dbfd == NULL |
12597 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12598 | { | |
12599 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12600 | dwp_name = objfile_name (objfile); |
12601 | dwp_name += ".dwp"; | |
ed2dc618 | 12602 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12603 | } |
12604 | ||
80626a55 DE |
12605 | if (dbfd == NULL) |
12606 | { | |
b4f54984 | 12607 | if (dwarf_read_debug) |
d721ba37 | 12608 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12609 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12610 | } |
400174b1 TT |
12611 | |
12612 | const char *name = bfd_get_filename (dbfd.get ()); | |
12613 | std::unique_ptr<struct dwp_file> dwp_file | |
12614 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12615 | |
0a0f4c01 | 12616 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12617 | dwp_file->elf_sections = |
5989a64e | 12618 | OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
80626a55 DE |
12619 | dwp_file->num_sections, asection *); |
12620 | ||
400174b1 TT |
12621 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12622 | dwarf2_locate_common_dwp_sections, | |
12623 | dwp_file.get ()); | |
80626a55 | 12624 | |
400174b1 TT |
12625 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12626 | 0); | |
80626a55 | 12627 | |
400174b1 TT |
12628 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12629 | 1); | |
80626a55 | 12630 | |
73869dc2 | 12631 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12632 | if (dwp_file->cus && dwp_file->tus |
12633 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12634 | { |
12635 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12636 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12637 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12638 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12639 | " TU version %s [in DWP file %s]"), | |
12640 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12641 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12642 | } |
08302ed2 DE |
12643 | |
12644 | if (dwp_file->cus) | |
12645 | dwp_file->version = dwp_file->cus->version; | |
12646 | else if (dwp_file->tus) | |
12647 | dwp_file->version = dwp_file->tus->version; | |
12648 | else | |
12649 | dwp_file->version = 2; | |
73869dc2 DE |
12650 | |
12651 | if (dwp_file->version == 2) | |
400174b1 TT |
12652 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12653 | dwarf2_locate_v2_dwp_sections, | |
12654 | dwp_file.get ()); | |
73869dc2 | 12655 | |
298e9637 SM |
12656 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12657 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12658 | |
b4f54984 | 12659 | if (dwarf_read_debug) |
80626a55 DE |
12660 | { |
12661 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12662 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12663 | " %s CUs, %s TUs\n", |
12664 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12665 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12666 | } |
12667 | ||
12668 | return dwp_file; | |
3019eac3 | 12669 | } |
c906108c | 12670 | |
ab5088bf DE |
12671 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12672 | ||
12673 | static struct dwp_file * | |
ed2dc618 | 12674 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf | 12675 | { |
5989a64e | 12676 | if (! dwarf2_per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12677 | { |
5989a64e | 12678 | dwarf2_per_objfile->per_bfd->dwp_file |
ed2dc618 | 12679 | = open_and_init_dwp_file (dwarf2_per_objfile); |
5989a64e | 12680 | dwarf2_per_objfile->per_bfd->dwp_checked = 1; |
ab5088bf | 12681 | } |
5989a64e | 12682 | return dwarf2_per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12683 | } |
12684 | ||
80626a55 DE |
12685 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12686 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12687 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12688 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12689 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12690 | ||
12691 | This is called, for example, when wanting to read a variable with a | |
12692 | complex location. Therefore we don't want to do file i/o for every call. | |
12693 | Therefore we don't want to look for a DWO file on every call. | |
12694 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12695 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12696 | for a DWO file. | |
12697 | ||
1c658ad5 | 12698 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12699 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12700 | |
3019eac3 | 12701 | static struct dwo_unit * |
4ab09049 | 12702 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 12703 | ULONGEST signature, int is_debug_types) |
3019eac3 | 12704 | { |
4ab09049 | 12705 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 12706 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12707 | const char *kind = is_debug_types ? "TU" : "CU"; |
12708 | void **dwo_file_slot; | |
3019eac3 | 12709 | struct dwo_file *dwo_file; |
80626a55 | 12710 | struct dwp_file *dwp_file; |
cb1df416 | 12711 | |
6a506a2d DE |
12712 | /* First see if there's a DWP file. |
12713 | If we have a DWP file but didn't find the DWO inside it, don't | |
12714 | look for the original DWO file. It makes gdb behave differently | |
12715 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12716 | |
ed2dc618 | 12717 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12718 | if (dwp_file != NULL) |
cf2c3c16 | 12719 | { |
80626a55 DE |
12720 | const struct dwp_hash_table *dwp_htab = |
12721 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12722 | ||
12723 | if (dwp_htab != NULL) | |
12724 | { | |
12725 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12726 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12727 | signature, is_debug_types); |
80626a55 DE |
12728 | |
12729 | if (dwo_cutu != NULL) | |
12730 | { | |
b4f54984 | 12731 | if (dwarf_read_debug) |
80626a55 DE |
12732 | { |
12733 | fprintf_unfiltered (gdb_stdlog, | |
12734 | "Virtual DWO %s %s found: @%s\n", | |
12735 | kind, hex_string (signature), | |
12736 | host_address_to_string (dwo_cutu)); | |
12737 | } | |
12738 | return dwo_cutu; | |
12739 | } | |
12740 | } | |
12741 | } | |
6a506a2d | 12742 | else |
80626a55 | 12743 | { |
6a506a2d | 12744 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12745 | |
ed2dc618 SM |
12746 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12747 | dwo_name, comp_dir); | |
6a506a2d | 12748 | if (*dwo_file_slot == NULL) |
80626a55 | 12749 | { |
6a506a2d | 12750 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 12751 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 12752 | } |
6a506a2d | 12753 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12754 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12755 | |
6a506a2d | 12756 | if (dwo_file != NULL) |
19c3d4c9 | 12757 | { |
6a506a2d DE |
12758 | struct dwo_unit *dwo_cutu = NULL; |
12759 | ||
12760 | if (is_debug_types && dwo_file->tus) | |
12761 | { | |
12762 | struct dwo_unit find_dwo_cutu; | |
12763 | ||
12764 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12765 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12766 | dwo_cutu |
b0b6a987 TT |
12767 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12768 | &find_dwo_cutu); | |
6a506a2d | 12769 | } |
33c5cd75 | 12770 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12771 | { |
33c5cd75 DB |
12772 | struct dwo_unit find_dwo_cutu; |
12773 | ||
12774 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12775 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12776 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12777 | &find_dwo_cutu); |
6a506a2d DE |
12778 | } |
12779 | ||
12780 | if (dwo_cutu != NULL) | |
12781 | { | |
b4f54984 | 12782 | if (dwarf_read_debug) |
6a506a2d DE |
12783 | { |
12784 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12785 | kind, dwo_name, hex_string (signature), | |
12786 | host_address_to_string (dwo_cutu)); | |
12787 | } | |
12788 | return dwo_cutu; | |
80626a55 DE |
12789 | } |
12790 | } | |
2e276125 | 12791 | } |
9cdd5dbd | 12792 | |
80626a55 DE |
12793 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12794 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12795 | correctly to find the file. */ | |
12796 | ||
b4f54984 | 12797 | if (dwarf_read_debug) |
80626a55 DE |
12798 | { |
12799 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12800 | kind, dwo_name, hex_string (signature)); | |
12801 | } | |
3019eac3 | 12802 | |
6656a72d DE |
12803 | /* This is a warning and not a complaint because it can be caused by |
12804 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12805 | { |
12806 | /* Print the name of the DWP file if we looked there, helps the user | |
12807 | better diagnose the problem. */ | |
791afaa2 | 12808 | std::string dwp_text; |
43942612 DE |
12809 | |
12810 | if (dwp_file != NULL) | |
791afaa2 TT |
12811 | dwp_text = string_printf (" [in DWP file %s]", |
12812 | lbasename (dwp_file->name)); | |
43942612 | 12813 | |
9d8780f0 | 12814 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 12815 | " [in module %s]"), |
4ab09049 SM |
12816 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
12817 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 12818 | } |
3019eac3 | 12819 | return NULL; |
5fb290d7 DJ |
12820 | } |
12821 | ||
80626a55 DE |
12822 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12823 | See lookup_dwo_cutu_unit for details. */ | |
12824 | ||
12825 | static struct dwo_unit * | |
4ab09049 | 12826 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
12827 | ULONGEST signature) |
12828 | { | |
4ab09049 SM |
12829 | gdb_assert (!cu->per_cu->is_debug_types); |
12830 | ||
12831 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
12832 | } |
12833 | ||
12834 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12835 | See lookup_dwo_cutu_unit for details. */ | |
12836 | ||
12837 | static struct dwo_unit * | |
4ab09049 | 12838 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 12839 | { |
4ab09049 SM |
12840 | gdb_assert (cu->per_cu->is_debug_types); |
12841 | ||
12842 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
12843 | ||
12844 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
12845 | } |
12846 | ||
89e63ee4 DE |
12847 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12848 | ||
12849 | static int | |
12850 | queue_and_load_dwo_tu (void **slot, void *info) | |
12851 | { | |
12852 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 12853 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 12854 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 12855 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
12856 | |
12857 | if (sig_type != NULL) | |
12858 | { | |
12859 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12860 | ||
12861 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12862 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12863 | while processing PER_CU. */ | |
120ce1b5 | 12864 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
12865 | load_full_type_unit (sig_cu, cu->per_objfile); |
12866 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
12867 | } |
12868 | ||
12869 | return 1; | |
12870 | } | |
12871 | ||
1b555f17 | 12872 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
12873 | The DWO may have the only definition of the type, though it may not be |
12874 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12875 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12876 | ||
12877 | static void | |
1b555f17 | 12878 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
12879 | { |
12880 | struct dwo_unit *dwo_unit; | |
12881 | struct dwo_file *dwo_file; | |
12882 | ||
1b555f17 SM |
12883 | gdb_assert (cu != nullptr); |
12884 | gdb_assert (!cu->per_cu->is_debug_types); | |
12885 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 12886 | |
1b555f17 | 12887 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
12888 | gdb_assert (dwo_unit != NULL); |
12889 | ||
12890 | dwo_file = dwo_unit->dwo_file; | |
12891 | if (dwo_file->tus != NULL) | |
1b555f17 | 12892 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
12893 | } |
12894 | ||
3019eac3 | 12895 | /* Read in various DIEs. */ |
348e048f | 12896 | |
d389af10 | 12897 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12898 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12899 | already referenced by DW_AT_abstract_origin from the children of the | |
12900 | current DIE. */ | |
d389af10 JK |
12901 | |
12902 | static void | |
12903 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12904 | { | |
12905 | struct die_info *child_die; | |
791afaa2 | 12906 | sect_offset *offsetp; |
d389af10 JK |
12907 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12908 | struct die_info *origin_die; | |
12909 | /* Iterator of the ORIGIN_DIE children. */ | |
12910 | struct die_info *origin_child_die; | |
d389af10 | 12911 | struct attribute *attr; |
cd02d79d PA |
12912 | struct dwarf2_cu *origin_cu; |
12913 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12914 | |
12915 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12916 | if (!attr) | |
12917 | return; | |
12918 | ||
cd02d79d PA |
12919 | /* Note that following die references may follow to a die in a |
12920 | different cu. */ | |
12921 | ||
12922 | origin_cu = cu; | |
12923 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12924 | ||
12925 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12926 | symbols in. */ | |
12927 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12928 | origin_cu->list_in_scope = cu->list_in_scope; | |
12929 | ||
edb3359d DJ |
12930 | if (die->tag != origin_die->tag |
12931 | && !(die->tag == DW_TAG_inlined_subroutine | |
12932 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12933 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12934 | sect_offset_str (die->sect_off), |
12935 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12936 | |
791afaa2 | 12937 | std::vector<sect_offset> offsets; |
d389af10 | 12938 | |
3ea89b92 PMR |
12939 | for (child_die = die->child; |
12940 | child_die && child_die->tag; | |
436c571c | 12941 | child_die = child_die->sibling) |
3ea89b92 PMR |
12942 | { |
12943 | struct die_info *child_origin_die; | |
12944 | struct dwarf2_cu *child_origin_cu; | |
12945 | ||
12946 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12947 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12948 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12949 | present in the abstract instance but not referenced in the concrete | |
12950 | one. */ | |
216f72a1 JK |
12951 | if (child_die->tag == DW_TAG_call_site |
12952 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12953 | continue; |
12954 | ||
c38f313d DJ |
12955 | /* For each CHILD_DIE, find the corresponding child of |
12956 | ORIGIN_DIE. If there is more than one layer of | |
12957 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12958 | but GCC versions at least through 4.4 generate this (GCC PR | |
12959 | 40573). */ | |
3ea89b92 PMR |
12960 | child_origin_die = child_die; |
12961 | child_origin_cu = cu; | |
c38f313d DJ |
12962 | while (1) |
12963 | { | |
cd02d79d PA |
12964 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12965 | child_origin_cu); | |
c38f313d DJ |
12966 | if (attr == NULL) |
12967 | break; | |
cd02d79d PA |
12968 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12969 | &child_origin_cu); | |
c38f313d DJ |
12970 | } |
12971 | ||
d389af10 JK |
12972 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12973 | counterpart may exist. */ | |
c38f313d | 12974 | if (child_origin_die != child_die) |
d389af10 | 12975 | { |
edb3359d DJ |
12976 | if (child_die->tag != child_origin_die->tag |
12977 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12978 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12979 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12980 | "different tags"), |
9d8780f0 SM |
12981 | sect_offset_str (child_die->sect_off), |
12982 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12983 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12984 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12985 | "different parents"), |
9d8780f0 SM |
12986 | sect_offset_str (child_die->sect_off), |
12987 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12988 | else |
791afaa2 | 12989 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12990 | } |
d389af10 | 12991 | } |
791afaa2 TT |
12992 | std::sort (offsets.begin (), offsets.end ()); |
12993 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12994 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12995 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12996 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12997 | "to DIE %s as their abstract origin"), |
12998 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12999 | |
791afaa2 | 13000 | offsetp = offsets.data (); |
d389af10 JK |
13001 | origin_child_die = origin_die->child; |
13002 | while (origin_child_die && origin_child_die->tag) | |
13003 | { | |
13004 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13005 | while (offsetp < offsets_end |
9c541725 | 13006 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13007 | offsetp++; |
b64f50a1 | 13008 | if (offsetp >= offsets_end |
9c541725 | 13009 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13010 | { |
adde2bff DE |
13011 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13012 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13013 | This can happen with mutually referenced abstract_origins. | |
13014 | PR 16581. */ | |
13015 | if (!origin_child_die->in_process) | |
13016 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13017 | } |
436c571c | 13018 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13019 | } |
cd02d79d | 13020 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13021 | |
13022 | if (cu != origin_cu) | |
13023 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13024 | } |
13025 | ||
c906108c | 13026 | static void |
e7c27a73 | 13027 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13028 | { |
5e22e966 | 13029 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13030 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13031 | struct context_stack *newobj; |
c906108c SS |
13032 | CORE_ADDR lowpc; |
13033 | CORE_ADDR highpc; | |
13034 | struct die_info *child_die; | |
edb3359d | 13035 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13036 | const char *name; |
e142c38c | 13037 | CORE_ADDR baseaddr; |
801e3a5b | 13038 | struct block *block; |
edb3359d | 13039 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13040 | std::vector<struct symbol *> template_args; |
34eaf542 | 13041 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13042 | |
13043 | if (inlined_func) | |
13044 | { | |
13045 | /* If we do not have call site information, we can't show the | |
13046 | caller of this inlined function. That's too confusing, so | |
13047 | only use the scope for local variables. */ | |
13048 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13049 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13050 | if (call_line == NULL || call_file == NULL) | |
13051 | { | |
13052 | read_lexical_block_scope (die, cu); | |
13053 | return; | |
13054 | } | |
13055 | } | |
c906108c | 13056 | |
b3b3bada | 13057 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13058 | |
94af9270 | 13059 | name = dwarf2_name (die, cu); |
c906108c | 13060 | |
e8d05480 JB |
13061 | /* Ignore functions with missing or empty names. These are actually |
13062 | illegal according to the DWARF standard. */ | |
13063 | if (name == NULL) | |
13064 | { | |
b98664d3 | 13065 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13066 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13067 | return; |
13068 | } | |
13069 | ||
13070 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13071 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13072 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13073 | { |
ae4d0c03 PM |
13074 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13075 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13076 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13077 | "for subprogram DIE at %s"), |
13078 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13079 | return; |
13080 | } | |
c906108c | 13081 | |
3e29f34a MR |
13082 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13083 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13084 | |
34eaf542 TT |
13085 | /* If we have any template arguments, then we must allocate a |
13086 | different sort of symbol. */ | |
436c571c | 13087 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13088 | { |
13089 | if (child_die->tag == DW_TAG_template_type_param | |
13090 | || child_die->tag == DW_TAG_template_value_param) | |
13091 | { | |
8c14c3a3 | 13092 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13093 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13094 | break; |
13095 | } | |
13096 | } | |
13097 | ||
c24bdb02 | 13098 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13099 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13100 | (struct symbol *) templ_func); | |
4c2df51b | 13101 | |
81873cc8 | 13102 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13103 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13104 | cu->language); |
13105 | ||
4cecd739 DJ |
13106 | /* If there is a location expression for DW_AT_frame_base, record |
13107 | it. */ | |
e142c38c | 13108 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13109 | if (attr != nullptr) |
fe978cb0 | 13110 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13111 | |
63e43d3a PMR |
13112 | /* If there is a location for the static link, record it. */ |
13113 | newobj->static_link = NULL; | |
13114 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13115 | if (attr != nullptr) |
63e43d3a | 13116 | { |
224c3ddb SM |
13117 | newobj->static_link |
13118 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13119 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13120 | cu->addr_type ()); |
63e43d3a PMR |
13121 | } |
13122 | ||
c24bdb02 | 13123 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13124 | |
639d11d3 | 13125 | if (die->child != NULL) |
c906108c | 13126 | { |
639d11d3 | 13127 | child_die = die->child; |
c906108c SS |
13128 | while (child_die && child_die->tag) |
13129 | { | |
34eaf542 TT |
13130 | if (child_die->tag == DW_TAG_template_type_param |
13131 | || child_die->tag == DW_TAG_template_value_param) | |
13132 | { | |
13133 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13134 | ||
f1078f66 | 13135 | if (arg != NULL) |
2f4732b0 | 13136 | template_args.push_back (arg); |
34eaf542 TT |
13137 | } |
13138 | else | |
13139 | process_die (child_die, cu); | |
436c571c | 13140 | child_die = child_die->sibling; |
c906108c SS |
13141 | } |
13142 | } | |
13143 | ||
d389af10 JK |
13144 | inherit_abstract_dies (die, cu); |
13145 | ||
4a811a97 UW |
13146 | /* If we have a DW_AT_specification, we might need to import using |
13147 | directives from the context of the specification DIE. See the | |
13148 | comment in determine_prefix. */ | |
13149 | if (cu->language == language_cplus | |
13150 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13151 | { | |
13152 | struct dwarf2_cu *spec_cu = cu; | |
13153 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13154 | ||
13155 | while (spec_die) | |
13156 | { | |
13157 | child_die = spec_die->child; | |
13158 | while (child_die && child_die->tag) | |
13159 | { | |
13160 | if (child_die->tag == DW_TAG_imported_module) | |
13161 | process_die (child_die, spec_cu); | |
436c571c | 13162 | child_die = child_die->sibling; |
4a811a97 UW |
13163 | } |
13164 | ||
13165 | /* In some cases, GCC generates specification DIEs that | |
13166 | themselves contain DW_AT_specification attributes. */ | |
13167 | spec_die = die_specification (spec_die, &spec_cu); | |
13168 | } | |
13169 | } | |
13170 | ||
c24bdb02 | 13171 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13172 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13173 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13174 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13175 | |
df8a16a1 | 13176 | /* For C++, set the block's scope. */ |
45280282 IB |
13177 | if ((cu->language == language_cplus |
13178 | || cu->language == language_fortran | |
c44af4eb TT |
13179 | || cu->language == language_d |
13180 | || cu->language == language_rust) | |
4d4ec4e5 | 13181 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13182 | block_set_scope (block, determine_prefix (die, cu), |
13183 | &objfile->objfile_obstack); | |
df8a16a1 | 13184 | |
801e3a5b JB |
13185 | /* If we have address ranges, record them. */ |
13186 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13187 | |
a60f3166 | 13188 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13189 | |
34eaf542 | 13190 | /* Attach template arguments to function. */ |
2f4732b0 | 13191 | if (!template_args.empty ()) |
34eaf542 TT |
13192 | { |
13193 | gdb_assert (templ_func != NULL); | |
13194 | ||
2f4732b0 | 13195 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13196 | templ_func->template_arguments |
8d749320 SM |
13197 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13198 | templ_func->n_template_arguments); | |
34eaf542 | 13199 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13200 | template_args.data (), |
34eaf542 | 13201 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13202 | |
13203 | /* Make sure that the symtab is set on the new symbols. Even | |
13204 | though they don't appear in this symtab directly, other parts | |
13205 | of gdb assume that symbols do, and this is reasonably | |
13206 | true. */ | |
8634679f | 13207 | for (symbol *sym : template_args) |
3e1d3d8c | 13208 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13209 | } |
13210 | ||
208d8187 JB |
13211 | /* In C++, we can have functions nested inside functions (e.g., when |
13212 | a function declares a class that has methods). This means that | |
13213 | when we finish processing a function scope, we may need to go | |
13214 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13215 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13216 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13217 | |
921e78cf JB |
13218 | /* If we've finished processing a top-level function, subsequent |
13219 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13220 | if (cu->get_builder ()->outermost_context_p ()) |
13221 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13222 | } |
13223 | ||
13224 | /* Process all the DIES contained within a lexical block scope. Start | |
13225 | a new scope, process the dies, and then close the scope. */ | |
13226 | ||
13227 | static void | |
e7c27a73 | 13228 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13229 | { |
5e22e966 | 13230 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13231 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13232 | CORE_ADDR lowpc, highpc; |
13233 | struct die_info *child_die; | |
e142c38c DJ |
13234 | CORE_ADDR baseaddr; |
13235 | ||
b3b3bada | 13236 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13237 | |
13238 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13239 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13240 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13241 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13242 | describe ranges. */ |
e385593e JK |
13243 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13244 | { | |
13245 | case PC_BOUNDS_NOT_PRESENT: | |
13246 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13247 | there was no wrapping by that DW_TAG_lexical_block. | |
13248 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13249 | for (child_die = die->child; | |
13250 | child_die != NULL && child_die->tag; | |
436c571c | 13251 | child_die = child_die->sibling) |
4f7bc5ed TT |
13252 | { |
13253 | /* We might already be processing this DIE. This can happen | |
13254 | in an unusual circumstance -- where a subroutine A | |
13255 | appears lexically in another subroutine B, but A actually | |
13256 | inlines B. The recursion is broken here, rather than in | |
13257 | inherit_abstract_dies, because it seems better to simply | |
13258 | drop concrete children here. */ | |
13259 | if (!child_die->in_process) | |
13260 | process_die (child_die, cu); | |
13261 | } | |
e385593e JK |
13262 | return; |
13263 | case PC_BOUNDS_INVALID: | |
13264 | return; | |
13265 | } | |
3e29f34a MR |
13266 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13267 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13268 | |
c24bdb02 | 13269 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13270 | if (die->child != NULL) |
c906108c | 13271 | { |
639d11d3 | 13272 | child_die = die->child; |
c906108c SS |
13273 | while (child_die && child_die->tag) |
13274 | { | |
e7c27a73 | 13275 | process_die (child_die, cu); |
436c571c | 13276 | child_die = child_die->sibling; |
c906108c SS |
13277 | } |
13278 | } | |
3ea89b92 | 13279 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13280 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13281 | |
c24bdb02 KS |
13282 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13283 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13284 | { |
801e3a5b | 13285 | struct block *block |
c24bdb02 | 13286 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13287 | cstk.start_addr, highpc); |
801e3a5b JB |
13288 | |
13289 | /* Note that recording ranges after traversing children, as we | |
13290 | do here, means that recording a parent's ranges entails | |
13291 | walking across all its children's ranges as they appear in | |
13292 | the address map, which is quadratic behavior. | |
13293 | ||
13294 | It would be nicer to record the parent's ranges before | |
13295 | traversing its children, simply overriding whatever you find | |
13296 | there. But since we don't even decide whether to create a | |
13297 | block until after we've traversed its children, that's hard | |
13298 | to do. */ | |
13299 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13300 | } |
c24bdb02 KS |
13301 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13302 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13303 | } |
13304 | ||
216f72a1 | 13305 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13306 | |
13307 | static void | |
13308 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13309 | { | |
5e22e966 | 13310 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13311 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13312 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13313 | CORE_ADDR pc, baseaddr; |
13314 | struct attribute *attr; | |
13315 | struct call_site *call_site, call_site_local; | |
13316 | void **slot; | |
13317 | int nparams; | |
13318 | struct die_info *child_die; | |
13319 | ||
b3b3bada | 13320 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13321 | |
216f72a1 JK |
13322 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13323 | if (attr == NULL) | |
13324 | { | |
13325 | /* This was a pre-DWARF-5 GNU extension alias | |
13326 | for DW_AT_call_return_pc. */ | |
13327 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13328 | } | |
96408a79 SA |
13329 | if (!attr) |
13330 | { | |
b98664d3 | 13331 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13332 | "DIE %s [in module %s]"), |
13333 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13334 | return; |
13335 | } | |
cd6c91b4 | 13336 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13337 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13338 | |
13339 | if (cu->call_site_htab == NULL) | |
13340 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13341 | NULL, &objfile->objfile_obstack, | |
13342 | hashtab_obstack_allocate, NULL); | |
13343 | call_site_local.pc = pc; | |
13344 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13345 | if (*slot != NULL) | |
13346 | { | |
b98664d3 | 13347 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13348 | "DIE %s [in module %s]"), |
13349 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13350 | objfile_name (objfile)); |
96408a79 SA |
13351 | return; |
13352 | } | |
13353 | ||
13354 | /* Count parameters at the caller. */ | |
13355 | ||
13356 | nparams = 0; | |
13357 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13358 | child_die = child_die->sibling) |
96408a79 | 13359 | { |
216f72a1 JK |
13360 | if (child_die->tag != DW_TAG_call_site_parameter |
13361 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13362 | { |
b98664d3 | 13363 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13364 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13365 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13366 | objfile_name (objfile)); |
96408a79 SA |
13367 | continue; |
13368 | } | |
13369 | ||
13370 | nparams++; | |
13371 | } | |
13372 | ||
224c3ddb SM |
13373 | call_site |
13374 | = ((struct call_site *) | |
13375 | obstack_alloc (&objfile->objfile_obstack, | |
13376 | sizeof (*call_site) | |
13377 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13378 | *slot = call_site; |
13379 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13380 | call_site->pc = pc; | |
13381 | ||
216f72a1 JK |
13382 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13383 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13384 | { |
13385 | struct die_info *func_die; | |
13386 | ||
13387 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13388 | for (func_die = die->parent; | |
13389 | func_die && func_die->tag != DW_TAG_subprogram | |
13390 | && func_die->tag != DW_TAG_subroutine_type; | |
13391 | func_die = func_die->parent); | |
13392 | ||
216f72a1 JK |
13393 | /* DW_AT_call_all_calls is a superset |
13394 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13395 | if (func_die |
216f72a1 | 13396 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13397 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13398 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13399 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13400 | { | |
13401 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13402 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13403 | both the initial caller containing the real return address PC and | |
13404 | the final callee containing the current PC of a chain of tail | |
13405 | calls do not need to have the tail call list complete. But any | |
13406 | function candidate for a virtual tail call frame searched via | |
13407 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13408 | determined unambiguously. */ | |
13409 | } | |
13410 | else | |
13411 | { | |
13412 | struct type *func_type = NULL; | |
13413 | ||
13414 | if (func_die) | |
13415 | func_type = get_die_type (func_die, cu); | |
13416 | if (func_type != NULL) | |
13417 | { | |
78134374 | 13418 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13419 | |
13420 | /* Enlist this call site to the function. */ | |
13421 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13422 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13423 | } | |
13424 | else | |
b98664d3 | 13425 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13426 | "DIE %s [in module %s]"), |
13427 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13428 | } |
13429 | } | |
13430 | ||
216f72a1 JK |
13431 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13432 | if (attr == NULL) | |
13433 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13434 | if (attr == NULL) | |
13435 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13436 | if (attr == NULL) |
216f72a1 JK |
13437 | { |
13438 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13439 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13440 | } | |
96408a79 | 13441 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13442 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13443 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13444 | else if (attr->form_is_block ()) |
96408a79 SA |
13445 | { |
13446 | struct dwarf2_locexpr_baton *dlbaton; | |
13447 | ||
8d749320 | 13448 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13449 | dlbaton->data = DW_BLOCK (attr)->data; |
13450 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13451 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13452 | dlbaton->per_cu = cu->per_cu; |
13453 | ||
13454 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13455 | } | |
cd6c91b4 | 13456 | else if (attr->form_is_ref ()) |
96408a79 | 13457 | { |
96408a79 SA |
13458 | struct dwarf2_cu *target_cu = cu; |
13459 | struct die_info *target_die; | |
13460 | ||
ac9ec31b | 13461 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13462 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13463 | if (die_is_declaration (target_die, target_cu)) |
13464 | { | |
7d45c7c3 | 13465 | const char *target_physname; |
9112db09 JK |
13466 | |
13467 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13468 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13469 | if (target_physname == NULL) |
9112db09 | 13470 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13471 | if (target_physname == NULL) |
b98664d3 | 13472 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13473 | "physname, for referencing DIE %s [in module %s]"), |
13474 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13475 | else |
7d455152 | 13476 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13477 | } |
13478 | else | |
13479 | { | |
13480 | CORE_ADDR lowpc; | |
13481 | ||
13482 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13483 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13484 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13485 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13486 | "low pc, for referencing DIE %s [in module %s]"), |
13487 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13488 | else |
3e29f34a MR |
13489 | { |
13490 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13491 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13492 | } | |
96408a79 SA |
13493 | } |
13494 | } | |
13495 | else | |
b98664d3 | 13496 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13497 | "block nor reference, for DIE %s [in module %s]"), |
13498 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13499 | |
13500 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13501 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13502 | |
13503 | for (child_die = die->child; | |
13504 | child_die && child_die->tag; | |
436c571c | 13505 | child_die = child_die->sibling) |
96408a79 | 13506 | { |
96408a79 | 13507 | struct call_site_parameter *parameter; |
1788b2d3 | 13508 | struct attribute *loc, *origin; |
96408a79 | 13509 | |
216f72a1 JK |
13510 | if (child_die->tag != DW_TAG_call_site_parameter |
13511 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13512 | { |
13513 | /* Already printed the complaint above. */ | |
13514 | continue; | |
13515 | } | |
13516 | ||
13517 | gdb_assert (call_site->parameter_count < nparams); | |
13518 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13519 | ||
1788b2d3 JK |
13520 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13521 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13522 | register is contained in DW_AT_call_value. */ |
96408a79 | 13523 | |
24c5c679 | 13524 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13525 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13526 | if (origin == NULL) | |
13527 | { | |
13528 | /* This was a pre-DWARF-5 GNU extension alias | |
13529 | for DW_AT_call_parameter. */ | |
13530 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13531 | } | |
cd6c91b4 | 13532 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13533 | { |
1788b2d3 | 13534 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13535 | |
0826b30a | 13536 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13537 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13538 | { |
13539 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13540 | binding can be done only inside one CU. Such referenced DIE | |
13541 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13542 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13543 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13544 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13545 | objfile_name (objfile)); |
d76b7dbc JK |
13546 | continue; |
13547 | } | |
9c541725 PA |
13548 | parameter->u.param_cu_off |
13549 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13550 | } |
4fc6c0d5 | 13551 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13552 | { |
b98664d3 | 13553 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13554 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13555 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13556 | continue; |
13557 | } | |
24c5c679 | 13558 | else |
96408a79 | 13559 | { |
24c5c679 JK |
13560 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13561 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13562 | if (parameter->u.dwarf_reg != -1) | |
13563 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13564 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13565 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13566 | ¶meter->u.fb_offset)) | |
13567 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13568 | else | |
13569 | { | |
b98664d3 | 13570 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13571 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13572 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13573 | "[in module %s]"), |
9d8780f0 | 13574 | sect_offset_str (child_die->sect_off), |
9c541725 | 13575 | objfile_name (objfile)); |
24c5c679 JK |
13576 | continue; |
13577 | } | |
96408a79 SA |
13578 | } |
13579 | ||
216f72a1 JK |
13580 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13581 | if (attr == NULL) | |
13582 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13583 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13584 | { |
b98664d3 | 13585 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13586 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13587 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13588 | objfile_name (objfile)); |
96408a79 SA |
13589 | continue; |
13590 | } | |
13591 | parameter->value = DW_BLOCK (attr)->data; | |
13592 | parameter->value_size = DW_BLOCK (attr)->size; | |
13593 | ||
13594 | /* Parameters are not pre-cleared by memset above. */ | |
13595 | parameter->data_value = NULL; | |
13596 | parameter->data_value_size = 0; | |
13597 | call_site->parameter_count++; | |
13598 | ||
216f72a1 JK |
13599 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13600 | if (attr == NULL) | |
13601 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13602 | if (attr != nullptr) |
96408a79 | 13603 | { |
4fc6c0d5 | 13604 | if (!attr->form_is_block ()) |
b98664d3 | 13605 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13606 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13607 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13608 | objfile_name (objfile)); |
96408a79 SA |
13609 | else |
13610 | { | |
13611 | parameter->data_value = DW_BLOCK (attr)->data; | |
13612 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13613 | } | |
13614 | } | |
13615 | } | |
13616 | } | |
13617 | ||
71a3c369 TT |
13618 | /* Helper function for read_variable. If DIE represents a virtual |
13619 | table, then return the type of the concrete object that is | |
13620 | associated with the virtual table. Otherwise, return NULL. */ | |
13621 | ||
13622 | static struct type * | |
13623 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13624 | { | |
13625 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13626 | if (attr == NULL) | |
13627 | return NULL; | |
13628 | ||
13629 | /* Find the type DIE. */ | |
13630 | struct die_info *type_die = NULL; | |
13631 | struct dwarf2_cu *type_cu = cu; | |
13632 | ||
cd6c91b4 | 13633 | if (attr->form_is_ref ()) |
71a3c369 TT |
13634 | type_die = follow_die_ref (die, attr, &type_cu); |
13635 | if (type_die == NULL) | |
13636 | return NULL; | |
13637 | ||
13638 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13639 | return NULL; | |
13640 | return die_containing_type (type_die, type_cu); | |
13641 | } | |
13642 | ||
13643 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13644 | ||
13645 | static void | |
13646 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13647 | { | |
13648 | struct rust_vtable_symbol *storage = NULL; | |
13649 | ||
13650 | if (cu->language == language_rust) | |
13651 | { | |
13652 | struct type *containing_type = rust_containing_type (die, cu); | |
13653 | ||
13654 | if (containing_type != NULL) | |
13655 | { | |
5e22e966 | 13656 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13657 | |
8c14c3a3 | 13658 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13659 | storage->concrete_type = containing_type; |
cf724bc9 | 13660 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13661 | } |
13662 | } | |
13663 | ||
e4a62c65 TV |
13664 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13665 | struct attribute *abstract_origin | |
13666 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13667 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13668 | if (res == NULL && loc && abstract_origin) | |
13669 | { | |
13670 | /* We have a variable without a name, but with a location and an abstract | |
13671 | origin. This may be a concrete instance of an abstract variable | |
13672 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13673 | later. */ | |
13674 | struct dwarf2_cu *origin_cu = cu; | |
13675 | struct die_info *origin_die | |
13676 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13677 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13678 | per_objfile->per_bfd->abstract_to_concrete | |
13679 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13680 | } |
71a3c369 TT |
13681 | } |
13682 | ||
43988095 JK |
13683 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13684 | reading .debug_rnglists. | |
13685 | Callback's type should be: | |
13686 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13687 | Return true if the attributes are present and valid, otherwise, | |
13688 | return false. */ | |
13689 | ||
13690 | template <typename Callback> | |
13691 | static bool | |
13692 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13693 | Callback &&callback) | |
13694 | { | |
5e22e966 | 13695 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 13696 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13697 | bfd *obfd = objfile->obfd; |
43988095 | 13698 | /* Base address selection entry. */ |
2b24b6e4 | 13699 | gdb::optional<CORE_ADDR> base; |
43988095 | 13700 | const gdb_byte *buffer; |
43988095 JK |
13701 | CORE_ADDR baseaddr; |
13702 | bool overflow = false; | |
13703 | ||
43988095 JK |
13704 | base = cu->base_address; |
13705 | ||
5989a64e SM |
13706 | dwarf2_per_objfile->per_bfd->rnglists.read (objfile); |
13707 | if (offset >= dwarf2_per_objfile->per_bfd->rnglists.size) | |
43988095 | 13708 | { |
b98664d3 | 13709 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13710 | offset); |
13711 | return false; | |
13712 | } | |
5989a64e | 13713 | buffer = dwarf2_per_objfile->per_bfd->rnglists.buffer + offset; |
43988095 | 13714 | |
b3b3bada | 13715 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13716 | |
13717 | while (1) | |
13718 | { | |
7814882a JK |
13719 | /* Initialize it due to a false compiler warning. */ |
13720 | CORE_ADDR range_beginning = 0, range_end = 0; | |
5989a64e SM |
13721 | const gdb_byte *buf_end = (dwarf2_per_objfile->per_bfd->rnglists.buffer |
13722 | + dwarf2_per_objfile->per_bfd->rnglists.size); | |
43988095 JK |
13723 | unsigned int bytes_read; |
13724 | ||
13725 | if (buffer == buf_end) | |
13726 | { | |
13727 | overflow = true; | |
13728 | break; | |
13729 | } | |
13730 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13731 | switch (rlet) | |
13732 | { | |
13733 | case DW_RLE_end_of_list: | |
13734 | break; | |
13735 | case DW_RLE_base_address: | |
13736 | if (buffer + cu->header.addr_size > buf_end) | |
13737 | { | |
13738 | overflow = true; | |
13739 | break; | |
13740 | } | |
c8a7a66f | 13741 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13742 | buffer += bytes_read; |
13743 | break; | |
13744 | case DW_RLE_start_length: | |
13745 | if (buffer + cu->header.addr_size > buf_end) | |
13746 | { | |
13747 | overflow = true; | |
13748 | break; | |
13749 | } | |
c8a7a66f TT |
13750 | range_beginning = cu->header.read_address (obfd, buffer, |
13751 | &bytes_read); | |
43988095 JK |
13752 | buffer += bytes_read; |
13753 | range_end = (range_beginning | |
13754 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13755 | buffer += bytes_read; | |
13756 | if (buffer > buf_end) | |
13757 | { | |
13758 | overflow = true; | |
13759 | break; | |
13760 | } | |
13761 | break; | |
13762 | case DW_RLE_offset_pair: | |
13763 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13764 | buffer += bytes_read; | |
13765 | if (buffer > buf_end) | |
13766 | { | |
13767 | overflow = true; | |
13768 | break; | |
13769 | } | |
13770 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13771 | buffer += bytes_read; | |
13772 | if (buffer > buf_end) | |
13773 | { | |
13774 | overflow = true; | |
13775 | break; | |
13776 | } | |
13777 | break; | |
13778 | case DW_RLE_start_end: | |
13779 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13780 | { | |
13781 | overflow = true; | |
13782 | break; | |
13783 | } | |
c8a7a66f TT |
13784 | range_beginning = cu->header.read_address (obfd, buffer, |
13785 | &bytes_read); | |
43988095 | 13786 | buffer += bytes_read; |
c8a7a66f | 13787 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13788 | buffer += bytes_read; |
13789 | break; | |
13790 | default: | |
b98664d3 | 13791 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13792 | return false; |
13793 | } | |
13794 | if (rlet == DW_RLE_end_of_list || overflow) | |
13795 | break; | |
13796 | if (rlet == DW_RLE_base_address) | |
13797 | continue; | |
13798 | ||
2b24b6e4 | 13799 | if (!base.has_value ()) |
43988095 JK |
13800 | { |
13801 | /* We have no valid base address for the ranges | |
13802 | data. */ | |
b98664d3 | 13803 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13804 | return false; |
13805 | } | |
13806 | ||
13807 | if (range_beginning > range_end) | |
13808 | { | |
13809 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13810 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13811 | return false; |
13812 | } | |
13813 | ||
13814 | /* Empty range entries have no effect. */ | |
13815 | if (range_beginning == range_end) | |
13816 | continue; | |
13817 | ||
2b24b6e4 TT |
13818 | range_beginning += *base; |
13819 | range_end += *base; | |
43988095 JK |
13820 | |
13821 | /* A not-uncommon case of bad debug info. | |
13822 | Don't pollute the addrmap with bad data. */ | |
13823 | if (range_beginning + baseaddr == 0 | |
5989a64e | 13824 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
43988095 | 13825 | { |
b98664d3 | 13826 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13827 | " [in module %s]"), objfile_name (objfile)); |
13828 | continue; | |
13829 | } | |
13830 | ||
13831 | callback (range_beginning, range_end); | |
13832 | } | |
13833 | ||
13834 | if (overflow) | |
13835 | { | |
b98664d3 | 13836 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13837 | "for DW_AT_ranges attribute"), |
13838 | offset); | |
13839 | return false; | |
13840 | } | |
13841 | ||
13842 | return true; | |
13843 | } | |
13844 | ||
13845 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13846 | Callback's type should be: | |
13847 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13848 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13849 | |
43988095 | 13850 | template <typename Callback> |
43039443 | 13851 | static int |
5f46c5a5 | 13852 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13853 | Callback &&callback) |
43039443 | 13854 | { |
5e22e966 SM |
13855 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13856 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
13857 | struct comp_unit_head *cu_header = &cu->header; |
13858 | bfd *obfd = objfile->obfd; | |
13859 | unsigned int addr_size = cu_header->addr_size; | |
13860 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13861 | /* Base address selection entry. */ | |
2b24b6e4 | 13862 | gdb::optional<CORE_ADDR> base; |
43039443 | 13863 | unsigned int dummy; |
d521ce57 | 13864 | const gdb_byte *buffer; |
ff013f42 | 13865 | CORE_ADDR baseaddr; |
43039443 | 13866 | |
43988095 JK |
13867 | if (cu_header->version >= 5) |
13868 | return dwarf2_rnglists_process (offset, cu, callback); | |
13869 | ||
d00adf39 | 13870 | base = cu->base_address; |
43039443 | 13871 | |
5e22e966 SM |
13872 | per_objfile->per_bfd->ranges.read (objfile); |
13873 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 13874 | { |
b98664d3 | 13875 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13876 | offset); |
13877 | return 0; | |
13878 | } | |
5e22e966 | 13879 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 13880 | |
b3b3bada | 13881 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13882 | |
43039443 JK |
13883 | while (1) |
13884 | { | |
13885 | CORE_ADDR range_beginning, range_end; | |
13886 | ||
c8a7a66f | 13887 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13888 | buffer += addr_size; |
c8a7a66f | 13889 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13890 | buffer += addr_size; |
13891 | offset += 2 * addr_size; | |
13892 | ||
13893 | /* An end of list marker is a pair of zero addresses. */ | |
13894 | if (range_beginning == 0 && range_end == 0) | |
13895 | /* Found the end of list entry. */ | |
13896 | break; | |
13897 | ||
13898 | /* Each base address selection entry is a pair of 2 values. | |
13899 | The first is the largest possible address, the second is | |
13900 | the base address. Check for a base address here. */ | |
13901 | if ((range_beginning & mask) == mask) | |
13902 | { | |
28d2bfb9 AB |
13903 | /* If we found the largest possible address, then we already |
13904 | have the base address in range_end. */ | |
13905 | base = range_end; | |
43039443 JK |
13906 | continue; |
13907 | } | |
13908 | ||
2b24b6e4 | 13909 | if (!base.has_value ()) |
43039443 JK |
13910 | { |
13911 | /* We have no valid base address for the ranges | |
13912 | data. */ | |
b98664d3 | 13913 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13914 | return 0; |
13915 | } | |
13916 | ||
9277c30c UW |
13917 | if (range_beginning > range_end) |
13918 | { | |
13919 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13920 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13921 | return 0; |
13922 | } | |
13923 | ||
13924 | /* Empty range entries have no effect. */ | |
13925 | if (range_beginning == range_end) | |
13926 | continue; | |
13927 | ||
2b24b6e4 TT |
13928 | range_beginning += *base; |
13929 | range_end += *base; | |
43039443 | 13930 | |
01093045 DE |
13931 | /* A not-uncommon case of bad debug info. |
13932 | Don't pollute the addrmap with bad data. */ | |
13933 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 13934 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 13935 | { |
b98664d3 | 13936 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13937 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13938 | continue; |
13939 | } | |
13940 | ||
5f46c5a5 JK |
13941 | callback (range_beginning, range_end); |
13942 | } | |
13943 | ||
13944 | return 1; | |
13945 | } | |
13946 | ||
13947 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13948 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13949 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13950 | ||
13951 | static int | |
13952 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13953 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13954 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13955 | { |
5e22e966 | 13956 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13957 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 13958 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13959 | int low_set = 0; |
13960 | CORE_ADDR low = 0; | |
13961 | CORE_ADDR high = 0; | |
13962 | int retval; | |
13963 | ||
13964 | retval = dwarf2_ranges_process (offset, cu, | |
13965 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13966 | { | |
9277c30c | 13967 | if (ranges_pst != NULL) |
3e29f34a MR |
13968 | { |
13969 | CORE_ADDR lowpc; | |
13970 | CORE_ADDR highpc; | |
13971 | ||
79748972 TT |
13972 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13973 | range_beginning + baseaddr) | |
13974 | - baseaddr); | |
13975 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13976 | range_end + baseaddr) | |
13977 | - baseaddr); | |
d320c2b5 TT |
13978 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13979 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13980 | } |
ff013f42 | 13981 | |
43039443 JK |
13982 | /* FIXME: This is recording everything as a low-high |
13983 | segment of consecutive addresses. We should have a | |
13984 | data structure for discontiguous block ranges | |
13985 | instead. */ | |
13986 | if (! low_set) | |
13987 | { | |
13988 | low = range_beginning; | |
13989 | high = range_end; | |
13990 | low_set = 1; | |
13991 | } | |
13992 | else | |
13993 | { | |
13994 | if (range_beginning < low) | |
13995 | low = range_beginning; | |
13996 | if (range_end > high) | |
13997 | high = range_end; | |
13998 | } | |
5f46c5a5 JK |
13999 | }); |
14000 | if (!retval) | |
14001 | return 0; | |
43039443 JK |
14002 | |
14003 | if (! low_set) | |
14004 | /* If the first entry is an end-of-list marker, the range | |
14005 | describes an empty scope, i.e. no instructions. */ | |
14006 | return 0; | |
14007 | ||
14008 | if (low_return) | |
14009 | *low_return = low; | |
14010 | if (high_return) | |
14011 | *high_return = high; | |
14012 | return 1; | |
14013 | } | |
14014 | ||
3a2b436a JK |
14015 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14016 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14017 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14018 | |
3a2b436a | 14019 | static enum pc_bounds_kind |
af34e669 | 14020 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14021 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14022 | dwarf2_psymtab *pst) |
c906108c | 14023 | { |
5e22e966 | 14024 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
c906108c | 14025 | struct attribute *attr; |
91da1414 | 14026 | struct attribute *attr_high; |
af34e669 DJ |
14027 | CORE_ADDR low = 0; |
14028 | CORE_ADDR high = 0; | |
e385593e | 14029 | enum pc_bounds_kind ret; |
c906108c | 14030 | |
91da1414 MW |
14031 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14032 | if (attr_high) | |
af34e669 | 14033 | { |
e142c38c | 14034 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14035 | if (attr != nullptr) |
91da1414 | 14036 | { |
cd6c91b4 TT |
14037 | low = attr->value_as_address (); |
14038 | high = attr_high->value_as_address (); | |
14039 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14040 | high += low; |
91da1414 | 14041 | } |
af34e669 DJ |
14042 | else |
14043 | /* Found high w/o low attribute. */ | |
e385593e | 14044 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14045 | |
14046 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14047 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14048 | } |
c906108c | 14049 | else |
af34e669 | 14050 | { |
e142c38c | 14051 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14052 | if (attr != NULL) |
14053 | { | |
18a8505e | 14054 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14055 | We take advantage of the fact that DW_AT_ranges does not appear |
14056 | in DW_TAG_compile_unit of DWO files. */ | |
14057 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14058 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14059 | + (need_ranges_base | |
14060 | ? cu->ranges_base | |
14061 | : 0)); | |
2e3cf129 | 14062 | |
af34e669 | 14063 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14064 | .debug_ranges section. */ |
2e3cf129 | 14065 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14066 | return PC_BOUNDS_INVALID; |
43039443 | 14067 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14068 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14069 | } |
e385593e JK |
14070 | else |
14071 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14072 | } |
c906108c | 14073 | |
48fbe735 | 14074 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14075 | if (high <= low) |
e385593e | 14076 | return PC_BOUNDS_INVALID; |
c906108c SS |
14077 | |
14078 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14079 | eliminate duplicate copies of functions and vtables and such. | |
14080 | The linker will arbitrarily choose one and discard the others. | |
14081 | The AT_*_pc values for such functions refer to local labels in | |
14082 | these sections. If the section from that file was discarded, the | |
14083 | labels are not in the output, so the relocs get a value of 0. | |
14084 | If this is a discarded function, mark the pc bounds as invalid, | |
14085 | so that GDB will ignore it. */ | |
5989a64e | 14086 | if (low == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14087 | return PC_BOUNDS_INVALID; |
c906108c SS |
14088 | |
14089 | *lowpc = low; | |
96408a79 SA |
14090 | if (highpc) |
14091 | *highpc = high; | |
af34e669 | 14092 | return ret; |
c906108c SS |
14093 | } |
14094 | ||
b084d499 JB |
14095 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14096 | its low and high PC addresses. Do nothing if these addresses could not | |
14097 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14098 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14099 | ||
14100 | static void | |
14101 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14102 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14103 | struct dwarf2_cu *cu) | |
14104 | { | |
14105 | CORE_ADDR low, high; | |
14106 | struct die_info *child = die->child; | |
14107 | ||
e385593e | 14108 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14109 | { |
325fac50 PA |
14110 | *lowpc = std::min (*lowpc, low); |
14111 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14112 | } |
14113 | ||
14114 | /* If the language does not allow nested subprograms (either inside | |
14115 | subprograms or lexical blocks), we're done. */ | |
14116 | if (cu->language != language_ada) | |
14117 | return; | |
6e70227d | 14118 | |
b084d499 JB |
14119 | /* Check all the children of the given DIE. If it contains nested |
14120 | subprograms, then check their pc bounds. Likewise, we need to | |
14121 | check lexical blocks as well, as they may also contain subprogram | |
14122 | definitions. */ | |
14123 | while (child && child->tag) | |
14124 | { | |
14125 | if (child->tag == DW_TAG_subprogram | |
14126 | || child->tag == DW_TAG_lexical_block) | |
14127 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14128 | child = child->sibling; |
b084d499 JB |
14129 | } |
14130 | } | |
14131 | ||
fae299cd DC |
14132 | /* Get the low and high pc's represented by the scope DIE, and store |
14133 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14134 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14135 | ||
14136 | static void | |
14137 | get_scope_pc_bounds (struct die_info *die, | |
14138 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14139 | struct dwarf2_cu *cu) | |
14140 | { | |
14141 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14142 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14143 | CORE_ADDR current_low, current_high; | |
14144 | ||
3a2b436a | 14145 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14146 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14147 | { |
14148 | best_low = current_low; | |
14149 | best_high = current_high; | |
14150 | } | |
14151 | else | |
14152 | { | |
14153 | struct die_info *child = die->child; | |
14154 | ||
14155 | while (child && child->tag) | |
14156 | { | |
14157 | switch (child->tag) { | |
14158 | case DW_TAG_subprogram: | |
b084d499 | 14159 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14160 | break; |
14161 | case DW_TAG_namespace: | |
f55ee35c | 14162 | case DW_TAG_module: |
fae299cd DC |
14163 | /* FIXME: carlton/2004-01-16: Should we do this for |
14164 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14165 | that current GCC's always emit the DIEs corresponding | |
14166 | to definitions of methods of classes as children of a | |
14167 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14168 | the DIEs giving the declarations, which could be | |
14169 | anywhere). But I don't see any reason why the | |
14170 | standards says that they have to be there. */ | |
14171 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14172 | ||
14173 | if (current_low != ((CORE_ADDR) -1)) | |
14174 | { | |
325fac50 PA |
14175 | best_low = std::min (best_low, current_low); |
14176 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14177 | } |
14178 | break; | |
14179 | default: | |
0963b4bd | 14180 | /* Ignore. */ |
fae299cd DC |
14181 | break; |
14182 | } | |
14183 | ||
436c571c | 14184 | child = child->sibling; |
fae299cd DC |
14185 | } |
14186 | } | |
14187 | ||
14188 | *lowpc = best_low; | |
14189 | *highpc = best_high; | |
14190 | } | |
14191 | ||
801e3a5b JB |
14192 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14193 | in DIE. */ | |
380bca97 | 14194 | |
801e3a5b JB |
14195 | static void |
14196 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14197 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14198 | { | |
5e22e966 | 14199 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14200 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14201 | struct attribute *attr; |
91da1414 | 14202 | struct attribute *attr_high; |
801e3a5b | 14203 | |
91da1414 MW |
14204 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14205 | if (attr_high) | |
801e3a5b | 14206 | { |
801e3a5b | 14207 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14208 | if (attr != nullptr) |
801e3a5b | 14209 | { |
cd6c91b4 TT |
14210 | CORE_ADDR low = attr->value_as_address (); |
14211 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14212 | |
cd6c91b4 | 14213 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14214 | high += low; |
9a619af0 | 14215 | |
3e29f34a MR |
14216 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14217 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14218 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14219 | } |
14220 | } | |
14221 | ||
14222 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14223 | if (attr != nullptr) |
801e3a5b | 14224 | { |
18a8505e | 14225 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14226 | We take advantage of the fact that DW_AT_ranges does not appear |
14227 | in DW_TAG_compile_unit of DWO files. */ | |
14228 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14229 | |
14230 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14231 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14232 | unsigned long offset = (DW_UNSND (attr) |
14233 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14234 | |
2d5f09ec | 14235 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14236 | dwarf2_ranges_process (offset, cu, |
14237 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14238 | { | |
58fdfd2c JK |
14239 | start += baseaddr; |
14240 | end += baseaddr; | |
5f46c5a5 JK |
14241 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14242 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14243 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14244 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14245 | }); |
2d5f09ec KB |
14246 | |
14247 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14248 | } |
14249 | } | |
14250 | ||
685b1105 JK |
14251 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14252 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14253 | |
685b1105 JK |
14254 | static void |
14255 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14256 | { |
38360086 | 14257 | int major, minor; |
60d5a603 JK |
14258 | |
14259 | if (cu->producer == NULL) | |
14260 | { | |
14261 | /* For unknown compilers expect their behavior is DWARF version | |
14262 | compliant. | |
14263 | ||
14264 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14265 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14266 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14267 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14268 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14269 | } |
b1ffba5a | 14270 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14271 | { |
38360086 MW |
14272 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14273 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14274 | } |
5230b05a | 14275 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14276 | { |
14277 | cu->producer_is_icc = true; | |
14278 | cu->producer_is_icc_lt_14 = major < 14; | |
14279 | } | |
c258c396 JD |
14280 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14281 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14282 | else |
14283 | { | |
14284 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14285 | compliant. */ | |
60d5a603 JK |
14286 | } |
14287 | ||
9068261f | 14288 | cu->checked_producer = true; |
685b1105 | 14289 | } |
ba919b58 | 14290 | |
685b1105 JK |
14291 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14292 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14293 | during 4.6.0 experimental. */ | |
14294 | ||
9068261f | 14295 | static bool |
685b1105 JK |
14296 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14297 | { | |
14298 | if (!cu->checked_producer) | |
14299 | check_producer (cu); | |
14300 | ||
14301 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14302 | } |
14303 | ||
c258c396 JD |
14304 | |
14305 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14306 | with incorrect is_stmt attributes. */ | |
14307 | ||
14308 | static bool | |
14309 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14310 | { | |
14311 | if (!cu->checked_producer) | |
14312 | check_producer (cu); | |
14313 | ||
14314 | return cu->producer_is_codewarrior; | |
14315 | } | |
14316 | ||
405feb71 | 14317 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14318 | DW_AT_accessibility. */ |
14319 | ||
14320 | static enum dwarf_access_attribute | |
14321 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14322 | { | |
14323 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14324 | { | |
14325 | /* The default DWARF 2 accessibility for members is public, the default | |
14326 | accessibility for inheritance is private. */ | |
14327 | ||
14328 | if (die->tag != DW_TAG_inheritance) | |
14329 | return DW_ACCESS_public; | |
14330 | else | |
14331 | return DW_ACCESS_private; | |
14332 | } | |
14333 | else | |
14334 | { | |
14335 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14336 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14337 | depends on the container kind. */ | |
14338 | ||
14339 | if (die->parent->tag == DW_TAG_class_type) | |
14340 | return DW_ACCESS_private; | |
14341 | else | |
14342 | return DW_ACCESS_public; | |
14343 | } | |
14344 | } | |
14345 | ||
74ac6d43 TT |
14346 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14347 | offset. If the attribute was not found return 0, otherwise return | |
14348 | 1. If it was found but could not properly be handled, set *OFFSET | |
14349 | to 0. */ | |
14350 | ||
14351 | static int | |
14352 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14353 | LONGEST *offset) | |
14354 | { | |
14355 | struct attribute *attr; | |
14356 | ||
14357 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14358 | if (attr != NULL) | |
14359 | { | |
14360 | *offset = 0; | |
14361 | ||
14362 | /* Note that we do not check for a section offset first here. | |
14363 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14364 | so if we see it, we can assume that a constant form is really | |
14365 | a constant and not a section offset. */ | |
cd6c91b4 | 14366 | if (attr->form_is_constant ()) |
0826b30a | 14367 | *offset = attr->constant_value (0); |
cd6c91b4 | 14368 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14369 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14370 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14371 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14372 | else | |
14373 | dwarf2_complex_location_expr_complaint (); | |
14374 | ||
14375 | return 1; | |
14376 | } | |
14377 | ||
14378 | return 0; | |
14379 | } | |
14380 | ||
7d79de9a TT |
14381 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14382 | ||
14383 | static void | |
14384 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14385 | struct field *field) | |
14386 | { | |
14387 | struct attribute *attr; | |
14388 | ||
14389 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14390 | if (attr != NULL) | |
14391 | { | |
14392 | if (attr->form_is_constant ()) | |
14393 | { | |
14394 | LONGEST offset = attr->constant_value (0); | |
14395 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14396 | } | |
14397 | else if (attr->form_is_section_offset ()) | |
14398 | dwarf2_complex_location_expr_complaint (); | |
14399 | else if (attr->form_is_block ()) | |
14400 | { | |
14401 | bool handled; | |
14402 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14403 | if (handled) | |
14404 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14405 | else | |
14406 | { | |
5e22e966 SM |
14407 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14408 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14409 | struct dwarf2_locexpr_baton *dlbaton |
14410 | = XOBNEW (&objfile->objfile_obstack, | |
14411 | struct dwarf2_locexpr_baton); | |
14412 | dlbaton->data = DW_BLOCK (attr)->data; | |
14413 | dlbaton->size = DW_BLOCK (attr)->size; | |
14414 | /* When using this baton, we want to compute the address | |
14415 | of the field, not the value. This is why | |
14416 | is_reference is set to false here. */ | |
14417 | dlbaton->is_reference = false; | |
5e22e966 | 14418 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14419 | dlbaton->per_cu = cu->per_cu; |
14420 | ||
14421 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14422 | } | |
14423 | } | |
14424 | else | |
14425 | dwarf2_complex_location_expr_complaint (); | |
14426 | } | |
14427 | } | |
14428 | ||
c906108c SS |
14429 | /* Add an aggregate field to the field list. */ |
14430 | ||
14431 | static void | |
107d2387 | 14432 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14433 | struct dwarf2_cu *cu) |
6e70227d | 14434 | { |
5e22e966 | 14435 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14436 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14437 | struct nextfield *new_field; |
14438 | struct attribute *attr; | |
14439 | struct field *fp; | |
15d034d0 | 14440 | const char *fieldname = ""; |
c906108c | 14441 | |
7d0ccb61 DJ |
14442 | if (die->tag == DW_TAG_inheritance) |
14443 | { | |
be2daae6 TT |
14444 | fip->baseclasses.emplace_back (); |
14445 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14446 | } |
14447 | else | |
14448 | { | |
be2daae6 TT |
14449 | fip->fields.emplace_back (); |
14450 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14451 | } |
be2daae6 | 14452 | |
9c6a1327 TT |
14453 | new_field->offset = die->sect_off; |
14454 | ||
e142c38c | 14455 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14456 | if (attr != nullptr) |
c906108c | 14457 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14458 | else |
14459 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14460 | if (new_field->accessibility != DW_ACCESS_public) |
14461 | fip->non_public_fields = 1; | |
60d5a603 | 14462 | |
e142c38c | 14463 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14464 | if (attr != nullptr) |
c906108c | 14465 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14466 | else |
14467 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14468 | |
14469 | fp = &new_field->field; | |
a9a9bd0f | 14470 | |
e142c38c | 14471 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14472 | { |
a9a9bd0f | 14473 | /* Data member other than a C++ static data member. */ |
6e70227d | 14474 | |
c906108c | 14475 | /* Get type of field. */ |
e7c27a73 | 14476 | fp->type = die_type (die, cu); |
c906108c | 14477 | |
d6a843b5 | 14478 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14479 | |
c906108c | 14480 | /* Get bit size of field (zero if none). */ |
e142c38c | 14481 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14482 | if (attr != nullptr) |
c906108c SS |
14483 | { |
14484 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14485 | } | |
14486 | else | |
14487 | { | |
14488 | FIELD_BITSIZE (*fp) = 0; | |
14489 | } | |
14490 | ||
14491 | /* Get bit offset of field. */ | |
7d79de9a | 14492 | handle_data_member_location (die, cu, fp); |
e142c38c | 14493 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14494 | if (attr != nullptr) |
c906108c | 14495 | { |
d5a22e77 | 14496 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14497 | { |
14498 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14499 | additional bit offset from the MSB of the containing |
14500 | anonymous object to the MSB of the field. We don't | |
14501 | have to do anything special since we don't need to | |
14502 | know the size of the anonymous object. */ | |
f41f5e61 | 14503 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14504 | } |
14505 | else | |
14506 | { | |
14507 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14508 | MSB of the anonymous object, subtract off the number of |
14509 | bits from the MSB of the field to the MSB of the | |
14510 | object, and then subtract off the number of bits of | |
14511 | the field itself. The result is the bit offset of | |
14512 | the LSB of the field. */ | |
c906108c SS |
14513 | int anonymous_size; |
14514 | int bit_offset = DW_UNSND (attr); | |
14515 | ||
e142c38c | 14516 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14517 | if (attr != nullptr) |
c906108c SS |
14518 | { |
14519 | /* The size of the anonymous object containing | |
14520 | the bit field is explicit, so use the | |
14521 | indicated size (in bytes). */ | |
14522 | anonymous_size = DW_UNSND (attr); | |
14523 | } | |
14524 | else | |
14525 | { | |
14526 | /* The size of the anonymous object containing | |
14527 | the bit field must be inferred from the type | |
14528 | attribute of the data member containing the | |
14529 | bit field. */ | |
14530 | anonymous_size = TYPE_LENGTH (fp->type); | |
14531 | } | |
f41f5e61 PA |
14532 | SET_FIELD_BITPOS (*fp, |
14533 | (FIELD_BITPOS (*fp) | |
14534 | + anonymous_size * bits_per_byte | |
14535 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14536 | } |
14537 | } | |
da5b30da AA |
14538 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14539 | if (attr != NULL) | |
14540 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14541 | + attr->constant_value (0))); |
c906108c SS |
14542 | |
14543 | /* Get name of field. */ | |
39cbfefa DJ |
14544 | fieldname = dwarf2_name (die, cu); |
14545 | if (fieldname == NULL) | |
14546 | fieldname = ""; | |
d8151005 DJ |
14547 | |
14548 | /* The name is already allocated along with this objfile, so we don't | |
14549 | need to duplicate it for the type. */ | |
14550 | fp->name = fieldname; | |
c906108c SS |
14551 | |
14552 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14553 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14554 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14555 | { |
d48cc9dd | 14556 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14557 | new_field->accessibility = DW_ACCESS_private; |
14558 | fip->non_public_fields = 1; | |
14559 | } | |
14560 | } | |
a9a9bd0f | 14561 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14562 | { |
a9a9bd0f DC |
14563 | /* C++ static member. */ |
14564 | ||
14565 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14566 | is a declaration, but all versions of G++ as of this writing | |
14567 | (so through at least 3.2.1) incorrectly generate | |
14568 | DW_TAG_variable tags. */ | |
6e70227d | 14569 | |
ff355380 | 14570 | const char *physname; |
c906108c | 14571 | |
a9a9bd0f | 14572 | /* Get name of field. */ |
39cbfefa DJ |
14573 | fieldname = dwarf2_name (die, cu); |
14574 | if (fieldname == NULL) | |
c906108c SS |
14575 | return; |
14576 | ||
254e6b9e | 14577 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14578 | if (attr |
14579 | /* Only create a symbol if this is an external value. | |
14580 | new_symbol checks this and puts the value in the global symbol | |
14581 | table, which we want. If it is not external, new_symbol | |
14582 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14583 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14584 | { |
14585 | /* A static const member, not much different than an enum as far as | |
14586 | we're concerned, except that we can support more types. */ | |
14587 | new_symbol (die, NULL, cu); | |
14588 | } | |
14589 | ||
2df3850c | 14590 | /* Get physical name. */ |
ff355380 | 14591 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14592 | |
d8151005 DJ |
14593 | /* The name is already allocated along with this objfile, so we don't |
14594 | need to duplicate it for the type. */ | |
14595 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14596 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14597 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14598 | } |
14599 | else if (die->tag == DW_TAG_inheritance) | |
14600 | { | |
74ac6d43 | 14601 | /* C++ base class field. */ |
7d79de9a | 14602 | handle_data_member_location (die, cu, fp); |
c906108c | 14603 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14604 | FIELD_TYPE (*fp) = die_type (die, cu); |
7d93a1e0 | 14605 | FIELD_NAME (*fp) = fp->type->name (); |
c906108c | 14606 | } |
2ddeaf8a TT |
14607 | else |
14608 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14609 | } |
14610 | ||
883fd55a KS |
14611 | /* Can the type given by DIE define another type? */ |
14612 | ||
14613 | static bool | |
14614 | type_can_define_types (const struct die_info *die) | |
14615 | { | |
14616 | switch (die->tag) | |
14617 | { | |
14618 | case DW_TAG_typedef: | |
14619 | case DW_TAG_class_type: | |
14620 | case DW_TAG_structure_type: | |
14621 | case DW_TAG_union_type: | |
14622 | case DW_TAG_enumeration_type: | |
14623 | return true; | |
14624 | ||
14625 | default: | |
14626 | return false; | |
14627 | } | |
14628 | } | |
14629 | ||
14630 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14631 | |
14632 | static void | |
883fd55a KS |
14633 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14634 | struct dwarf2_cu *cu) | |
6e70227d | 14635 | { |
be2daae6 TT |
14636 | struct decl_field fp; |
14637 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14638 | |
883fd55a | 14639 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14640 | |
883fd55a | 14641 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14642 | fp.name = dwarf2_name (die, cu); |
14643 | fp.type = read_type_die (die, cu); | |
98751a41 | 14644 | |
c191a687 KS |
14645 | /* Save accessibility. */ |
14646 | enum dwarf_access_attribute accessibility; | |
14647 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14648 | if (attr != NULL) | |
14649 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14650 | else | |
14651 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14652 | switch (accessibility) | |
14653 | { | |
14654 | case DW_ACCESS_public: | |
14655 | /* The assumed value if neither private nor protected. */ | |
14656 | break; | |
14657 | case DW_ACCESS_private: | |
be2daae6 | 14658 | fp.is_private = 1; |
c191a687 KS |
14659 | break; |
14660 | case DW_ACCESS_protected: | |
be2daae6 | 14661 | fp.is_protected = 1; |
c191a687 KS |
14662 | break; |
14663 | default: | |
b98664d3 | 14664 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14665 | } |
14666 | ||
883fd55a | 14667 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14668 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14669 | else |
be2daae6 | 14670 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14671 | } |
14672 | ||
9c6a1327 TT |
14673 | /* A convenience typedef that's used when finding the discriminant |
14674 | field for a variant part. */ | |
1b95cdb7 SM |
14675 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14676 | offset_map_type; | |
9c6a1327 TT |
14677 | |
14678 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14679 | where the results will be stored. VARIANT is the variant to | |
14680 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14681 | or unsigned. */ | |
14682 | ||
14683 | static const gdb::array_view<discriminant_range> | |
14684 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14685 | bool is_unsigned) | |
14686 | { | |
14687 | std::vector<discriminant_range> ranges; | |
14688 | ||
14689 | if (variant.default_branch) | |
14690 | return {}; | |
14691 | ||
14692 | if (variant.discr_list_data == nullptr) | |
14693 | { | |
14694 | discriminant_range r | |
14695 | = {variant.discriminant_value, variant.discriminant_value}; | |
14696 | ranges.push_back (r); | |
14697 | } | |
14698 | else | |
14699 | { | |
14700 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14701 | variant.discr_list_data->size); | |
14702 | while (!data.empty ()) | |
14703 | { | |
14704 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14705 | { | |
14706 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14707 | break; | |
14708 | } | |
14709 | bool is_range = data[0] == DW_DSC_range; | |
14710 | data = data.slice (1); | |
14711 | ||
14712 | ULONGEST low, high; | |
14713 | unsigned int bytes_read; | |
14714 | ||
14715 | if (data.empty ()) | |
14716 | { | |
14717 | complaint (_("DW_AT_discr_list missing low value")); | |
14718 | break; | |
14719 | } | |
14720 | if (is_unsigned) | |
14721 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14722 | else | |
14723 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14724 | &bytes_read); | |
14725 | data = data.slice (bytes_read); | |
14726 | ||
14727 | if (is_range) | |
14728 | { | |
14729 | if (data.empty ()) | |
14730 | { | |
14731 | complaint (_("DW_AT_discr_list missing high value")); | |
14732 | break; | |
14733 | } | |
14734 | if (is_unsigned) | |
14735 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14736 | &bytes_read); | |
14737 | else | |
14738 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14739 | &bytes_read); | |
14740 | data = data.slice (bytes_read); | |
14741 | } | |
14742 | else | |
14743 | high = low; | |
14744 | ||
14745 | ranges.push_back ({ low, high }); | |
14746 | } | |
14747 | } | |
14748 | ||
14749 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14750 | ranges.size ()); | |
14751 | std::copy (ranges.begin (), ranges.end (), result); | |
14752 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14753 | } | |
14754 | ||
14755 | static const gdb::array_view<variant_part> create_variant_parts | |
14756 | (struct obstack *obstack, | |
14757 | const offset_map_type &offset_map, | |
14758 | struct field_info *fi, | |
14759 | const std::vector<variant_part_builder> &variant_parts); | |
14760 | ||
14761 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14762 | the variant to fill in. OBSTACK is where any needed allocations | |
14763 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14764 | fields for the type. FI describes the fields of the type we're | |
14765 | processing. FIELD is the variant field we're converting. */ | |
14766 | ||
14767 | static void | |
14768 | create_one_variant (variant &result, struct obstack *obstack, | |
14769 | const offset_map_type &offset_map, | |
14770 | struct field_info *fi, const variant_field &field) | |
14771 | { | |
14772 | result.discriminants = convert_variant_range (obstack, field, false); | |
14773 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14774 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14775 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14776 | field.variant_parts); | |
14777 | } | |
14778 | ||
14779 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14780 | is the variant part to fill in. OBSTACK is where any needed | |
14781 | allocations will be done. OFFSET_MAP holds the mapping from | |
14782 | section offsets to fields for the type. FI describes the fields of | |
14783 | the type we're processing. BUILDER is the variant part to be | |
14784 | converted. */ | |
14785 | ||
14786 | static void | |
14787 | create_one_variant_part (variant_part &result, | |
14788 | struct obstack *obstack, | |
14789 | const offset_map_type &offset_map, | |
14790 | struct field_info *fi, | |
14791 | const variant_part_builder &builder) | |
14792 | { | |
14793 | auto iter = offset_map.find (builder.discriminant_offset); | |
14794 | if (iter == offset_map.end ()) | |
14795 | { | |
14796 | result.discriminant_index = -1; | |
14797 | /* Doesn't matter. */ | |
14798 | result.is_unsigned = false; | |
14799 | } | |
14800 | else | |
14801 | { | |
14802 | result.discriminant_index = iter->second; | |
14803 | result.is_unsigned | |
14804 | = TYPE_UNSIGNED (FIELD_TYPE | |
14805 | (fi->fields[result.discriminant_index].field)); | |
14806 | } | |
14807 | ||
14808 | size_t n = builder.variants.size (); | |
14809 | variant *output = new (obstack) variant[n]; | |
14810 | for (size_t i = 0; i < n; ++i) | |
14811 | create_one_variant (output[i], obstack, offset_map, fi, | |
14812 | builder.variants[i]); | |
14813 | ||
14814 | result.variants = gdb::array_view<variant> (output, n); | |
14815 | } | |
14816 | ||
14817 | /* Create a vector of variant parts that can be attached to a type. | |
14818 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14819 | holds the mapping from section offsets to fields for the type. FI | |
14820 | describes the fields of the type we're processing. VARIANT_PARTS | |
14821 | is the vector to convert. */ | |
14822 | ||
14823 | static const gdb::array_view<variant_part> | |
14824 | create_variant_parts (struct obstack *obstack, | |
14825 | const offset_map_type &offset_map, | |
14826 | struct field_info *fi, | |
14827 | const std::vector<variant_part_builder> &variant_parts) | |
14828 | { | |
14829 | if (variant_parts.empty ()) | |
14830 | return {}; | |
14831 | ||
14832 | size_t n = variant_parts.size (); | |
14833 | variant_part *result = new (obstack) variant_part[n]; | |
14834 | for (size_t i = 0; i < n; ++i) | |
14835 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14836 | variant_parts[i]); | |
14837 | ||
14838 | return gdb::array_view<variant_part> (result, n); | |
14839 | } | |
14840 | ||
14841 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14842 | done. */ | |
14843 | ||
14844 | static void | |
14845 | add_variant_property (struct field_info *fip, struct type *type, | |
14846 | struct dwarf2_cu *cu) | |
14847 | { | |
14848 | /* Map section offsets of fields to their field index. Note the | |
14849 | field index here does not take the number of baseclasses into | |
14850 | account. */ | |
14851 | offset_map_type offset_map; | |
14852 | for (int i = 0; i < fip->fields.size (); ++i) | |
14853 | offset_map[fip->fields[i].offset] = i; | |
14854 | ||
5e22e966 | 14855 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
14856 | gdb::array_view<variant_part> parts |
14857 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14858 | fip->variant_parts); | |
14859 | ||
14860 | struct dynamic_prop prop; | |
14861 | prop.kind = PROP_VARIANT_PARTS; | |
14862 | prop.data.variant_parts | |
14863 | = ((gdb::array_view<variant_part> *) | |
14864 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14865 | ||
5c54719c | 14866 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
14867 | } |
14868 | ||
c906108c SS |
14869 | /* Create the vector of fields, and attach it to the type. */ |
14870 | ||
14871 | static void | |
fba45db2 | 14872 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14873 | struct dwarf2_cu *cu) |
c906108c | 14874 | { |
317f7127 | 14875 | int nfields = fip->nfields (); |
c906108c SS |
14876 | |
14877 | /* Record the field count, allocate space for the array of fields, | |
14878 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 14879 | type->set_num_fields (nfields); |
3cabb6b0 SM |
14880 | type->set_fields |
14881 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 14882 | |
b4ba55a1 | 14883 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14884 | { |
14885 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14886 | ||
14887 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14888 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14889 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14890 | ||
14891 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14892 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14893 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14894 | ||
774b6a14 TT |
14895 | TYPE_FIELD_IGNORE_BITS (type) = |
14896 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14897 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14898 | } |
14899 | ||
14900 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14901 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14902 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14903 | { |
be2daae6 | 14904 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14905 | unsigned char *pointer; |
c906108c SS |
14906 | |
14907 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14908 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14909 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14910 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14911 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14912 | } |
14913 | ||
9c6a1327 TT |
14914 | if (!fip->variant_parts.empty ()) |
14915 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 14916 | |
be2daae6 TT |
14917 | /* Copy the saved-up fields into the field vector. */ |
14918 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14919 | { |
be2daae6 TT |
14920 | struct nextfield &field |
14921 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14922 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14923 | |
ceacbf6e | 14924 | type->field (i) = field.field; |
be2daae6 | 14925 | switch (field.accessibility) |
c906108c | 14926 | { |
c5aa993b | 14927 | case DW_ACCESS_private: |
b4ba55a1 | 14928 | if (cu->language != language_ada) |
be2daae6 | 14929 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14930 | break; |
c906108c | 14931 | |
c5aa993b | 14932 | case DW_ACCESS_protected: |
b4ba55a1 | 14933 | if (cu->language != language_ada) |
be2daae6 | 14934 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14935 | break; |
c906108c | 14936 | |
c5aa993b JM |
14937 | case DW_ACCESS_public: |
14938 | break; | |
c906108c | 14939 | |
c5aa993b JM |
14940 | default: |
14941 | /* Unknown accessibility. Complain and treat it as public. */ | |
14942 | { | |
b98664d3 | 14943 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14944 | field.accessibility); |
c5aa993b JM |
14945 | } |
14946 | break; | |
c906108c | 14947 | } |
be2daae6 | 14948 | if (i < fip->baseclasses.size ()) |
c906108c | 14949 | { |
be2daae6 | 14950 | switch (field.virtuality) |
c906108c | 14951 | { |
c5aa993b JM |
14952 | case DW_VIRTUALITY_virtual: |
14953 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14954 | if (cu->language == language_ada) |
a73c6dcd | 14955 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14956 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14957 | break; |
c906108c SS |
14958 | } |
14959 | } | |
c906108c SS |
14960 | } |
14961 | } | |
14962 | ||
7d27a96d TT |
14963 | /* Return true if this member function is a constructor, false |
14964 | otherwise. */ | |
14965 | ||
14966 | static int | |
14967 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14968 | { | |
14969 | const char *fieldname; | |
fe978cb0 | 14970 | const char *type_name; |
7d27a96d TT |
14971 | int len; |
14972 | ||
14973 | if (die->parent == NULL) | |
14974 | return 0; | |
14975 | ||
14976 | if (die->parent->tag != DW_TAG_structure_type | |
14977 | && die->parent->tag != DW_TAG_union_type | |
14978 | && die->parent->tag != DW_TAG_class_type) | |
14979 | return 0; | |
14980 | ||
14981 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14982 | type_name = dwarf2_name (die->parent, cu); |
14983 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14984 | return 0; |
14985 | ||
14986 | len = strlen (fieldname); | |
fe978cb0 PA |
14987 | return (strncmp (fieldname, type_name, len) == 0 |
14988 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14989 | } |
14990 | ||
e35000a7 TBA |
14991 | /* Check if the given VALUE is a recognized enum |
14992 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14993 | Table 7.24. */ | |
14994 | ||
14995 | static bool | |
14996 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14997 | { | |
14998 | switch (value) | |
14999 | { | |
15000 | case DW_DEFAULTED_no: | |
15001 | case DW_DEFAULTED_in_class: | |
15002 | case DW_DEFAULTED_out_of_class: | |
15003 | return true; | |
15004 | } | |
15005 | ||
3142e908 | 15006 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15007 | return false; |
15008 | } | |
15009 | ||
c906108c SS |
15010 | /* Add a member function to the proper fieldlist. */ |
15011 | ||
15012 | static void | |
107d2387 | 15013 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15014 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15015 | { |
5e22e966 | 15016 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15017 | struct attribute *attr; |
c906108c | 15018 | int i; |
be2daae6 | 15019 | struct fnfieldlist *flp = nullptr; |
c906108c | 15020 | struct fn_field *fnp; |
15d034d0 | 15021 | const char *fieldname; |
f792889a | 15022 | struct type *this_type; |
60d5a603 | 15023 | enum dwarf_access_attribute accessibility; |
c906108c | 15024 | |
b4ba55a1 | 15025 | if (cu->language == language_ada) |
a73c6dcd | 15026 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15027 | |
2df3850c | 15028 | /* Get name of member function. */ |
39cbfefa DJ |
15029 | fieldname = dwarf2_name (die, cu); |
15030 | if (fieldname == NULL) | |
2df3850c | 15031 | return; |
c906108c | 15032 | |
c906108c | 15033 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15034 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15035 | { |
27bfe10e | 15036 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15037 | { |
15038 | flp = &fip->fnfieldlists[i]; | |
15039 | break; | |
15040 | } | |
c906108c SS |
15041 | } |
15042 | ||
be2daae6 TT |
15043 | /* Create a new fnfieldlist if necessary. */ |
15044 | if (flp == nullptr) | |
c906108c | 15045 | { |
be2daae6 TT |
15046 | fip->fnfieldlists.emplace_back (); |
15047 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15048 | flp->name = fieldname; |
be2daae6 | 15049 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15050 | } |
15051 | ||
be2daae6 TT |
15052 | /* Create a new member function field and add it to the vector of |
15053 | fnfieldlists. */ | |
15054 | flp->fnfields.emplace_back (); | |
15055 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15056 | |
15057 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15058 | if (cu->language == language_cplus) |
be2daae6 TT |
15059 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15060 | die, cu); | |
3da10d80 KS |
15061 | else |
15062 | { | |
1d06ead6 | 15063 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15064 | fnp->physname = physname ? physname : ""; |
15065 | } | |
15066 | ||
c906108c | 15067 | fnp->type = alloc_type (objfile); |
f792889a | 15068 | this_type = read_type_die (die, cu); |
78134374 | 15069 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15070 | { |
1f704f76 | 15071 | int nparams = this_type->num_fields (); |
c906108c | 15072 | |
f792889a | 15073 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15074 | of the method itself (TYPE_CODE_METHOD). */ |
15075 | smash_to_method_type (fnp->type, type, | |
f792889a | 15076 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15077 | this_type->fields (), |
1f704f76 | 15078 | this_type->num_fields (), |
f792889a | 15079 | TYPE_VARARGS (this_type)); |
c906108c SS |
15080 | |
15081 | /* Handle static member functions. | |
c5aa993b | 15082 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15083 | member functions. G++ helps GDB by marking the first |
15084 | parameter for non-static member functions (which is the this | |
15085 | pointer) as artificial. We obtain this information from | |
15086 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15087 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15088 | fnp->voffset = VOFFSET_STATIC; |
15089 | } | |
15090 | else | |
b98664d3 | 15091 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15092 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15093 | |
15094 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15095 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15096 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15097 | |
3e43a32a MS |
15098 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15099 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15100 | |
15101 | /* Get accessibility. */ | |
e142c38c | 15102 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15103 | if (attr != nullptr) |
aead7601 | 15104 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15105 | else |
15106 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15107 | switch (accessibility) | |
c906108c | 15108 | { |
60d5a603 JK |
15109 | case DW_ACCESS_private: |
15110 | fnp->is_private = 1; | |
15111 | break; | |
15112 | case DW_ACCESS_protected: | |
15113 | fnp->is_protected = 1; | |
15114 | break; | |
c906108c SS |
15115 | } |
15116 | ||
b02dede2 | 15117 | /* Check for artificial methods. */ |
e142c38c | 15118 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15119 | if (attr && DW_UNSND (attr) != 0) |
15120 | fnp->is_artificial = 1; | |
15121 | ||
e35000a7 TBA |
15122 | /* Check for defaulted methods. */ |
15123 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15124 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15125 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15126 | ||
15127 | /* Check for deleted methods. */ | |
15128 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15129 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15130 | fnp->is_deleted = 1; | |
15131 | ||
7d27a96d TT |
15132 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15133 | ||
0d564a31 | 15134 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15135 | function. For older versions of GCC, this is an offset in the |
15136 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15137 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15138 | to the object address. */ |
15139 | ||
e142c38c | 15140 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15141 | if (attr != nullptr) |
8e19ed76 | 15142 | { |
4fc6c0d5 | 15143 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15144 | { |
aec5aa8b TT |
15145 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15146 | { | |
15147 | /* Old-style GCC. */ | |
15148 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15149 | } | |
15150 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15151 | || (DW_BLOCK (attr)->size > 1 | |
15152 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15153 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15154 | { | |
aec5aa8b TT |
15155 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15156 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15157 | dwarf2_complex_location_expr_complaint (); | |
15158 | else | |
15159 | fnp->voffset /= cu->header.addr_size; | |
15160 | fnp->voffset += 2; | |
15161 | } | |
15162 | else | |
15163 | dwarf2_complex_location_expr_complaint (); | |
15164 | ||
15165 | if (!fnp->fcontext) | |
7e993ebf KS |
15166 | { |
15167 | /* If there is no `this' field and no DW_AT_containing_type, | |
15168 | we cannot actually find a base class context for the | |
15169 | vtable! */ | |
1f704f76 | 15170 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15171 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15172 | { | |
b98664d3 | 15173 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15174 | "function \"%s\" (offset %s)"), |
15175 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15176 | } |
15177 | else | |
15178 | { | |
15179 | fnp->fcontext | |
15180 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15181 | } | |
15182 | } | |
aec5aa8b | 15183 | } |
cd6c91b4 | 15184 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15185 | { |
4d3c2250 | 15186 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15187 | } |
15188 | else | |
15189 | { | |
4d3c2250 KB |
15190 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15191 | fieldname); | |
8e19ed76 | 15192 | } |
0d564a31 | 15193 | } |
d48cc9dd DJ |
15194 | else |
15195 | { | |
15196 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15197 | if (attr && DW_UNSND (attr)) | |
15198 | { | |
15199 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15200 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15201 | "but the vtable offset is not specified"), |
9d8780f0 | 15202 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15203 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15204 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15205 | } | |
15206 | } | |
c906108c SS |
15207 | } |
15208 | ||
15209 | /* Create the vector of member function fields, and attach it to the type. */ | |
15210 | ||
15211 | static void | |
fba45db2 | 15212 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15213 | struct dwarf2_cu *cu) |
c906108c | 15214 | { |
b4ba55a1 | 15215 | if (cu->language == language_ada) |
a73c6dcd | 15216 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15217 | |
c906108c SS |
15218 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15219 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15220 | TYPE_ALLOC (type, |
15221 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15222 | |
be2daae6 | 15223 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15224 | { |
be2daae6 | 15225 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15226 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15227 | |
be2daae6 TT |
15228 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15229 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15230 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15231 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15232 | ||
15233 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15234 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15235 | } |
15236 | ||
be2daae6 | 15237 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15238 | } |
15239 | ||
1168df01 JB |
15240 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15241 | language, zero otherwise. */ | |
15242 | static int | |
15243 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15244 | { | |
15245 | static const char vptr[] = "_vptr"; | |
15246 | ||
9c37b5ae TT |
15247 | /* Look for the C++ form of the vtable. */ |
15248 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15249 | return 1; |
15250 | ||
15251 | return 0; | |
15252 | } | |
15253 | ||
c0dd20ea | 15254 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15255 | functions, with the ABI-specified layout. If TYPE describes |
15256 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15257 | |
15258 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15259 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15260 | |
0b92b5bb TT |
15261 | static void |
15262 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15263 | { |
09e2d7c7 | 15264 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15265 | |
15266 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15267 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15268 | return; |
c0dd20ea DJ |
15269 | |
15270 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15271 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15272 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15273 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15274 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15275 | return; | |
c0dd20ea DJ |
15276 | |
15277 | /* Find the type of the method. */ | |
0b92b5bb | 15278 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea | 15279 | if (pfn_type == NULL |
78134374 SM |
15280 | || pfn_type->code () != TYPE_CODE_PTR |
15281 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15282 | return; |
c0dd20ea DJ |
15283 | |
15284 | /* Look for the "this" argument. */ | |
15285 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15286 | if (pfn_type->num_fields () == 0 |
0b92b5bb | 15287 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
78134374 | 15288 | || TYPE_FIELD_TYPE (pfn_type, 0)->code () != TYPE_CODE_PTR) |
0b92b5bb | 15289 | return; |
c0dd20ea | 15290 | |
09e2d7c7 | 15291 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15292 | new_type = alloc_type (objfile); |
09e2d7c7 | 15293 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15294 | pfn_type->fields (), pfn_type->num_fields (), |
c0dd20ea | 15295 | TYPE_VARARGS (pfn_type)); |
0b92b5bb | 15296 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15297 | } |
1168df01 | 15298 | |
2b4424c3 TT |
15299 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15300 | appropriate error checking and issuing complaints if there is a | |
15301 | problem. */ | |
15302 | ||
15303 | static ULONGEST | |
15304 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15305 | { | |
15306 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15307 | ||
15308 | if (attr == nullptr) | |
15309 | return 0; | |
15310 | ||
cd6c91b4 | 15311 | if (!attr->form_is_constant ()) |
2b4424c3 | 15312 | { |
b98664d3 | 15313 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15314 | " - DIE at %s [in module %s]"), |
15315 | sect_offset_str (die->sect_off), | |
5e22e966 | 15316 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15317 | return 0; |
15318 | } | |
15319 | ||
15320 | ULONGEST align; | |
15321 | if (attr->form == DW_FORM_sdata) | |
15322 | { | |
15323 | LONGEST val = DW_SND (attr); | |
15324 | if (val < 0) | |
15325 | { | |
b98664d3 | 15326 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15327 | " - DIE at %s [in module %s]"), |
15328 | sect_offset_str (die->sect_off), | |
5e22e966 | 15329 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15330 | return 0; |
15331 | } | |
15332 | align = val; | |
15333 | } | |
15334 | else | |
15335 | align = DW_UNSND (attr); | |
15336 | ||
15337 | if (align == 0) | |
15338 | { | |
b98664d3 | 15339 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15340 | " - DIE at %s [in module %s]"), |
15341 | sect_offset_str (die->sect_off), | |
5e22e966 | 15342 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15343 | return 0; |
15344 | } | |
15345 | if ((align & (align - 1)) != 0) | |
15346 | { | |
b98664d3 | 15347 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15348 | " - DIE at %s [in module %s]"), |
15349 | sect_offset_str (die->sect_off), | |
5e22e966 | 15350 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15351 | return 0; |
15352 | } | |
15353 | ||
15354 | return align; | |
15355 | } | |
15356 | ||
15357 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15358 | the alignment for TYPE. */ | |
15359 | ||
15360 | static void | |
15361 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15362 | struct type *type) | |
15363 | { | |
15364 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15365 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15366 | " - DIE at %s [in module %s]"), |
15367 | sect_offset_str (die->sect_off), | |
5e22e966 | 15368 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15369 | } |
685b1105 | 15370 | |
e35000a7 TBA |
15371 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15372 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15373 | ||
15374 | static bool | |
15375 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15376 | { | |
15377 | switch (value) | |
15378 | { | |
15379 | case DW_CC_normal: | |
15380 | case DW_CC_pass_by_reference: | |
15381 | case DW_CC_pass_by_value: | |
15382 | return true; | |
15383 | ||
15384 | default: | |
15385 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15386 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15387 | return false; |
15388 | } | |
15389 | } | |
15390 | ||
d0922fcf TBA |
15391 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15392 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15393 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15394 | ||
15395 | static bool | |
15396 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15397 | { | |
15398 | switch (value) | |
15399 | { | |
15400 | case DW_CC_normal: | |
15401 | case DW_CC_program: | |
15402 | case DW_CC_nocall: | |
15403 | return true; | |
15404 | ||
15405 | case DW_CC_GNU_renesas_sh: | |
15406 | case DW_CC_GNU_borland_fastcall_i386: | |
15407 | case DW_CC_GDB_IBM_OpenCL: | |
15408 | return true; | |
15409 | ||
15410 | default: | |
15411 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15412 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15413 | return false; |
15414 | } | |
15415 | } | |
15416 | ||
c906108c | 15417 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15418 | (definition) to create a type for the structure or union. Fill in |
15419 | the type's name and general properties; the members will not be | |
83655187 DE |
15420 | processed until process_structure_scope. A symbol table entry for |
15421 | the type will also not be done until process_structure_scope (assuming | |
15422 | the type has a name). | |
c906108c | 15423 | |
c767944b DJ |
15424 | NOTE: we need to call these functions regardless of whether or not the |
15425 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15426 | structure or union. This gets the type entered into our set of |
83655187 | 15427 | user defined types. */ |
c906108c | 15428 | |
f792889a | 15429 | static struct type * |
134d01f1 | 15430 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15431 | { |
5e22e966 | 15432 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15433 | struct type *type; |
15434 | struct attribute *attr; | |
15d034d0 | 15435 | const char *name; |
c906108c | 15436 | |
348e048f DE |
15437 | /* If the definition of this type lives in .debug_types, read that type. |
15438 | Don't follow DW_AT_specification though, that will take us back up | |
15439 | the chain and we want to go down. */ | |
052c8bb8 | 15440 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15441 | if (attr != nullptr) |
348e048f | 15442 | { |
ac9ec31b | 15443 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15444 | |
ac9ec31b | 15445 | /* The type's CU may not be the same as CU. |
02142a6c | 15446 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15447 | return set_die_type (die, type, cu); |
15448 | } | |
15449 | ||
c0dd20ea | 15450 | type = alloc_type (objfile); |
c906108c | 15451 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15452 | |
39cbfefa DJ |
15453 | name = dwarf2_name (die, cu); |
15454 | if (name != NULL) | |
c906108c | 15455 | { |
987504bb | 15456 | if (cu->language == language_cplus |
c44af4eb TT |
15457 | || cu->language == language_d |
15458 | || cu->language == language_rust) | |
63d06c5c | 15459 | { |
15d034d0 | 15460 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15461 | |
15462 | /* dwarf2_full_name might have already finished building the DIE's | |
15463 | type. If so, there is no need to continue. */ | |
15464 | if (get_die_type (die, cu) != NULL) | |
15465 | return get_die_type (die, cu); | |
15466 | ||
d0e39ea2 | 15467 | type->set_name (full_name); |
63d06c5c DC |
15468 | } |
15469 | else | |
15470 | { | |
d8151005 DJ |
15471 | /* The name is already allocated along with this objfile, so |
15472 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15473 | type->set_name (name); |
63d06c5c | 15474 | } |
c906108c SS |
15475 | } |
15476 | ||
15477 | if (die->tag == DW_TAG_structure_type) | |
15478 | { | |
67607e24 | 15479 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15480 | } |
15481 | else if (die->tag == DW_TAG_union_type) | |
15482 | { | |
67607e24 | 15483 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15484 | } |
15485 | else | |
15486 | { | |
67607e24 | 15487 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15488 | } |
15489 | ||
0cc2414c TT |
15490 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15491 | TYPE_DECLARED_CLASS (type) = 1; | |
15492 | ||
e35000a7 TBA |
15493 | /* Store the calling convention in the type if it's available in |
15494 | the die. Otherwise the calling convention remains set to | |
15495 | the default value DW_CC_normal. */ | |
15496 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15497 | if (attr != nullptr | |
15498 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15499 | { | |
15500 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15501 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15502 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15503 | } | |
15504 | ||
e142c38c | 15505 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15506 | if (attr != nullptr) |
c906108c | 15507 | { |
cd6c91b4 | 15508 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15509 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15510 | else | |
15511 | { | |
f8e89861 | 15512 | struct dynamic_prop prop; |
293e7e51 | 15513 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 15514 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
15515 | TYPE_LENGTH (type) = 0; |
15516 | } | |
c906108c SS |
15517 | } |
15518 | else | |
15519 | { | |
15520 | TYPE_LENGTH (type) = 0; | |
15521 | } | |
15522 | ||
2b4424c3 TT |
15523 | maybe_set_alignment (cu, die, type); |
15524 | ||
5230b05a | 15525 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15526 | { |
5230b05a WT |
15527 | /* ICC<14 does not output the required DW_AT_declaration on |
15528 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15529 | TYPE_STUB (type) = 1; |
685b1105 JK |
15530 | } |
15531 | else | |
15532 | TYPE_STUB_SUPPORTED (type) = 1; | |
15533 | ||
dc718098 | 15534 | if (die_is_declaration (die, cu)) |
876cecd0 | 15535 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15536 | else if (attr == NULL && die->child == NULL |
15537 | && producer_is_realview (cu->producer)) | |
15538 | /* RealView does not output the required DW_AT_declaration | |
15539 | on incomplete types. */ | |
15540 | TYPE_STUB (type) = 1; | |
dc718098 | 15541 | |
c906108c SS |
15542 | /* We need to add the type field to the die immediately so we don't |
15543 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15544 | type within the structure itself. */ |
1c379e20 | 15545 | set_die_type (die, type, cu); |
c906108c | 15546 | |
7e314c57 JK |
15547 | /* set_die_type should be already done. */ |
15548 | set_descriptive_type (type, die, cu); | |
15549 | ||
c767944b DJ |
15550 | return type; |
15551 | } | |
15552 | ||
9c6a1327 TT |
15553 | static void handle_struct_member_die |
15554 | (struct die_info *child_die, | |
15555 | struct type *type, | |
15556 | struct field_info *fi, | |
15557 | std::vector<struct symbol *> *template_args, | |
15558 | struct dwarf2_cu *cu); | |
15559 | ||
15560 | /* A helper for handle_struct_member_die that handles | |
15561 | DW_TAG_variant_part. */ | |
15562 | ||
15563 | static void | |
15564 | handle_variant_part (struct die_info *die, struct type *type, | |
15565 | struct field_info *fi, | |
15566 | std::vector<struct symbol *> *template_args, | |
15567 | struct dwarf2_cu *cu) | |
15568 | { | |
15569 | variant_part_builder *new_part; | |
15570 | if (fi->current_variant_part == nullptr) | |
15571 | { | |
15572 | fi->variant_parts.emplace_back (); | |
15573 | new_part = &fi->variant_parts.back (); | |
15574 | } | |
15575 | else if (!fi->current_variant_part->processing_variant) | |
15576 | { | |
15577 | complaint (_("nested DW_TAG_variant_part seen " | |
15578 | "- DIE at %s [in module %s]"), | |
15579 | sect_offset_str (die->sect_off), | |
5e22e966 | 15580 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15581 | return; |
15582 | } | |
15583 | else | |
15584 | { | |
15585 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15586 | current.variant_parts.emplace_back (); | |
15587 | new_part = ¤t.variant_parts.back (); | |
15588 | } | |
15589 | ||
15590 | /* When we recurse, we want callees to add to this new variant | |
15591 | part. */ | |
15592 | scoped_restore save_current_variant_part | |
15593 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15594 | ||
15595 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15596 | if (discr == NULL) | |
15597 | { | |
15598 | /* It's a univariant form, an extension we support. */ | |
15599 | } | |
15600 | else if (discr->form_is_ref ()) | |
15601 | { | |
15602 | struct dwarf2_cu *target_cu = cu; | |
15603 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15604 | ||
15605 | new_part->discriminant_offset = target_die->sect_off; | |
15606 | } | |
15607 | else | |
15608 | { | |
15609 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15610 | " - DIE at %s [in module %s]"), | |
15611 | sect_offset_str (die->sect_off), | |
5e22e966 | 15612 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15613 | } |
15614 | ||
15615 | for (die_info *child_die = die->child; | |
15616 | child_die != NULL; | |
15617 | child_die = child_die->sibling) | |
15618 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15619 | } | |
15620 | ||
15621 | /* A helper for handle_struct_member_die that handles | |
15622 | DW_TAG_variant. */ | |
15623 | ||
15624 | static void | |
15625 | handle_variant (struct die_info *die, struct type *type, | |
15626 | struct field_info *fi, | |
15627 | std::vector<struct symbol *> *template_args, | |
15628 | struct dwarf2_cu *cu) | |
15629 | { | |
15630 | if (fi->current_variant_part == nullptr) | |
15631 | { | |
15632 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15633 | "- DIE at %s [in module %s]"), | |
15634 | sect_offset_str (die->sect_off), | |
5e22e966 | 15635 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15636 | return; |
15637 | } | |
15638 | if (fi->current_variant_part->processing_variant) | |
15639 | { | |
15640 | complaint (_("nested DW_TAG_variant seen " | |
15641 | "- DIE at %s [in module %s]"), | |
15642 | sect_offset_str (die->sect_off), | |
5e22e966 | 15643 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15644 | return; |
15645 | } | |
15646 | ||
15647 | scoped_restore save_processing_variant | |
15648 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15649 | true); | |
15650 | ||
15651 | fi->current_variant_part->variants.emplace_back (); | |
15652 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15653 | variant.first_field = fi->fields.size (); | |
15654 | ||
15655 | /* In a variant we want to get the discriminant and also add a | |
15656 | field for our sole member child. */ | |
15657 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15658 | if (discr == nullptr) | |
15659 | { | |
15660 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15661 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15662 | variant.default_branch = true; | |
15663 | else | |
15664 | variant.discr_list_data = DW_BLOCK (discr); | |
15665 | } | |
15666 | else | |
15667 | variant.discriminant_value = DW_UNSND (discr); | |
15668 | ||
15669 | for (die_info *variant_child = die->child; | |
15670 | variant_child != NULL; | |
15671 | variant_child = variant_child->sibling) | |
15672 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15673 | ||
15674 | variant.last_field = fi->fields.size (); | |
15675 | } | |
15676 | ||
2ddeaf8a TT |
15677 | /* A helper for process_structure_scope that handles a single member |
15678 | DIE. */ | |
15679 | ||
15680 | static void | |
15681 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15682 | struct field_info *fi, | |
15683 | std::vector<struct symbol *> *template_args, | |
15684 | struct dwarf2_cu *cu) | |
15685 | { | |
15686 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15687 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15688 | { |
15689 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15690 | should be a DW_TAG_member that is a declaration, but | |
15691 | all versions of G++ as of this writing (so through at | |
15692 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15693 | tags for them instead. */ | |
15694 | dwarf2_add_field (fi, child_die, cu); | |
15695 | } | |
15696 | else if (child_die->tag == DW_TAG_subprogram) | |
15697 | { | |
15698 | /* Rust doesn't have member functions in the C++ sense. | |
15699 | However, it does emit ordinary functions as children | |
15700 | of a struct DIE. */ | |
15701 | if (cu->language == language_rust) | |
15702 | read_func_scope (child_die, cu); | |
15703 | else | |
15704 | { | |
15705 | /* C++ member function. */ | |
15706 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15707 | } | |
15708 | } | |
15709 | else if (child_die->tag == DW_TAG_inheritance) | |
15710 | { | |
15711 | /* C++ base class field. */ | |
15712 | dwarf2_add_field (fi, child_die, cu); | |
15713 | } | |
15714 | else if (type_can_define_types (child_die)) | |
15715 | dwarf2_add_type_defn (fi, child_die, cu); | |
15716 | else if (child_die->tag == DW_TAG_template_type_param | |
15717 | || child_die->tag == DW_TAG_template_value_param) | |
15718 | { | |
15719 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15720 | ||
15721 | if (arg != NULL) | |
15722 | template_args->push_back (arg); | |
15723 | } | |
9c6a1327 TT |
15724 | else if (child_die->tag == DW_TAG_variant_part) |
15725 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15726 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15727 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15728 | } |
15729 | ||
c767944b DJ |
15730 | /* Finish creating a structure or union type, including filling in |
15731 | its members and creating a symbol for it. */ | |
15732 | ||
15733 | static void | |
15734 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15735 | { | |
5e22e966 | 15736 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15737 | struct die_info *child_die; |
c767944b DJ |
15738 | struct type *type; |
15739 | ||
15740 | type = get_die_type (die, cu); | |
15741 | if (type == NULL) | |
15742 | type = read_structure_type (die, cu); | |
15743 | ||
3e1d3d8c | 15744 | bool has_template_parameters = false; |
e142c38c | 15745 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15746 | { |
15747 | struct field_info fi; | |
2f4732b0 | 15748 | std::vector<struct symbol *> template_args; |
c906108c | 15749 | |
639d11d3 | 15750 | child_die = die->child; |
c906108c SS |
15751 | |
15752 | while (child_die && child_die->tag) | |
15753 | { | |
2ddeaf8a | 15754 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15755 | child_die = child_die->sibling; |
c906108c SS |
15756 | } |
15757 | ||
34eaf542 | 15758 | /* Attach template arguments to type. */ |
2f4732b0 | 15759 | if (!template_args.empty ()) |
34eaf542 | 15760 | { |
3e1d3d8c | 15761 | has_template_parameters = true; |
34eaf542 | 15762 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15763 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15764 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15765 | = XOBNEWVEC (&objfile->objfile_obstack, |
15766 | struct symbol *, | |
15767 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15768 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15769 | template_args.data (), |
34eaf542 TT |
15770 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15771 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15772 | } |
15773 | ||
c906108c | 15774 | /* Attach fields and member functions to the type. */ |
317f7127 | 15775 | if (fi.nfields () > 0) |
e7c27a73 | 15776 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15777 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15778 | { |
e7c27a73 | 15779 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15780 | |
c5aa993b | 15781 | /* Get the type which refers to the base class (possibly this |
c906108c | 15782 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15783 | class from the DW_AT_containing_type attribute. This use of |
15784 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15785 | |
e142c38c | 15786 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15787 | { |
e7c27a73 | 15788 | struct type *t = die_containing_type (die, cu); |
c906108c | 15789 | |
ae6ae975 | 15790 | set_type_vptr_basetype (type, t); |
c906108c SS |
15791 | if (type == t) |
15792 | { | |
c906108c SS |
15793 | int i; |
15794 | ||
15795 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 15796 | for (i = t->num_fields () - 1; |
c906108c SS |
15797 | i >= TYPE_N_BASECLASSES (t); |
15798 | --i) | |
15799 | { | |
0d5cff50 | 15800 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15801 | |
1168df01 | 15802 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15803 | { |
ae6ae975 | 15804 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15805 | break; |
15806 | } | |
15807 | } | |
15808 | ||
15809 | /* Complain if virtual function table field not found. */ | |
15810 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15811 | complaint (_("virtual function table pointer " |
3e43a32a | 15812 | "not found when defining class '%s'"), |
7d93a1e0 | 15813 | type->name () ? type->name () : ""); |
c906108c SS |
15814 | } |
15815 | else | |
15816 | { | |
ae6ae975 | 15817 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15818 | } |
15819 | } | |
f6235d4c | 15820 | else if (cu->producer |
61012eef | 15821 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15822 | { |
15823 | /* The IBM XLC compiler does not provide direct indication | |
15824 | of the containing type, but the vtable pointer is | |
15825 | always named __vfp. */ | |
15826 | ||
15827 | int i; | |
15828 | ||
1f704f76 | 15829 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
15830 | i >= TYPE_N_BASECLASSES (type); |
15831 | --i) | |
15832 | { | |
15833 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15834 | { | |
ae6ae975 DE |
15835 | set_type_vptr_fieldno (type, i); |
15836 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15837 | break; |
15838 | } | |
15839 | } | |
15840 | } | |
c906108c | 15841 | } |
98751a41 JK |
15842 | |
15843 | /* Copy fi.typedef_field_list linked list elements content into the | |
15844 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15845 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15846 | { |
be2daae6 | 15847 | int count = fi.typedef_field_list.size (); |
98751a41 | 15848 | |
a0d7a4ff | 15849 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15850 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15851 | = ((struct decl_field *) |
be2daae6 TT |
15852 | TYPE_ALLOC (type, |
15853 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15854 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15855 | |
be2daae6 TT |
15856 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15857 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15858 | } |
c767944b | 15859 | |
883fd55a KS |
15860 | /* Copy fi.nested_types_list linked list elements content into the |
15861 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15862 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15863 | { |
be2daae6 | 15864 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15865 | |
15866 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15867 | TYPE_NESTED_TYPES_ARRAY (type) | |
15868 | = ((struct decl_field *) | |
be2daae6 TT |
15869 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15870 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15871 | |
be2daae6 TT |
15872 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15873 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15874 | } |
c906108c | 15875 | } |
63d06c5c | 15876 | |
bb5ed363 | 15877 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15878 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15879 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15880 | |
90aeadfc DC |
15881 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15882 | snapshots) has been known to create a die giving a declaration | |
15883 | for a class that has, as a child, a die giving a definition for a | |
15884 | nested class. So we have to process our children even if the | |
15885 | current die is a declaration. Normally, of course, a declaration | |
15886 | won't have any children at all. */ | |
134d01f1 | 15887 | |
ca040673 DE |
15888 | child_die = die->child; |
15889 | ||
90aeadfc DC |
15890 | while (child_die != NULL && child_die->tag) |
15891 | { | |
15892 | if (child_die->tag == DW_TAG_member | |
15893 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15894 | || child_die->tag == DW_TAG_inheritance |
15895 | || child_die->tag == DW_TAG_template_value_param | |
15896 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15897 | { |
90aeadfc | 15898 | /* Do nothing. */ |
134d01f1 | 15899 | } |
90aeadfc DC |
15900 | else |
15901 | process_die (child_die, cu); | |
134d01f1 | 15902 | |
436c571c | 15903 | child_die = child_die->sibling; |
134d01f1 DJ |
15904 | } |
15905 | ||
fa4028e9 JB |
15906 | /* Do not consider external references. According to the DWARF standard, |
15907 | these DIEs are identified by the fact that they have no byte_size | |
15908 | attribute, and a declaration attribute. */ | |
15909 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
15910 | || !die_is_declaration (die, cu) |
15911 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
15912 | { |
15913 | struct symbol *sym = new_symbol (die, type, cu); | |
15914 | ||
15915 | if (has_template_parameters) | |
15916 | { | |
a776957c TT |
15917 | struct symtab *symtab; |
15918 | if (sym != nullptr) | |
15919 | symtab = symbol_symtab (sym); | |
15920 | else if (cu->line_header != nullptr) | |
15921 | { | |
15922 | /* Any related symtab will do. */ | |
15923 | symtab | |
7ba99d21 | 15924 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15925 | } |
15926 | else | |
15927 | { | |
15928 | symtab = nullptr; | |
15929 | complaint (_("could not find suitable " | |
15930 | "symtab for template parameter" | |
15931 | " - DIE at %s [in module %s]"), | |
15932 | sect_offset_str (die->sect_off), | |
15933 | objfile_name (objfile)); | |
15934 | } | |
15935 | ||
15936 | if (symtab != nullptr) | |
15937 | { | |
15938 | /* Make sure that the symtab is set on the new symbols. | |
15939 | Even though they don't appear in this symtab directly, | |
15940 | other parts of gdb assume that symbols do, and this is | |
15941 | reasonably true. */ | |
15942 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15943 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15944 | } | |
3e1d3d8c TT |
15945 | } |
15946 | } | |
134d01f1 DJ |
15947 | } |
15948 | ||
ed6acedd TT |
15949 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
15950 | type, update TYPE using some information only available in DIE's | |
15951 | children. In particular, the fields are computed. */ | |
55426c9d JB |
15952 | |
15953 | static void | |
15954 | update_enumeration_type_from_children (struct die_info *die, | |
15955 | struct type *type, | |
15956 | struct dwarf2_cu *cu) | |
15957 | { | |
60f7655a | 15958 | struct die_info *child_die; |
55426c9d JB |
15959 | int unsigned_enum = 1; |
15960 | int flag_enum = 1; | |
55426c9d | 15961 | |
8268c778 | 15962 | auto_obstack obstack; |
ed6acedd | 15963 | std::vector<struct field> fields; |
55426c9d | 15964 | |
60f7655a DE |
15965 | for (child_die = die->child; |
15966 | child_die != NULL && child_die->tag; | |
436c571c | 15967 | child_die = child_die->sibling) |
55426c9d JB |
15968 | { |
15969 | struct attribute *attr; | |
15970 | LONGEST value; | |
15971 | const gdb_byte *bytes; | |
15972 | struct dwarf2_locexpr_baton *baton; | |
15973 | const char *name; | |
60f7655a | 15974 | |
55426c9d JB |
15975 | if (child_die->tag != DW_TAG_enumerator) |
15976 | continue; | |
15977 | ||
15978 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15979 | if (attr == NULL) | |
15980 | continue; | |
15981 | ||
15982 | name = dwarf2_name (child_die, cu); | |
15983 | if (name == NULL) | |
15984 | name = "<anonymous enumerator>"; | |
15985 | ||
15986 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15987 | &value, &bytes, &baton); | |
15988 | if (value < 0) | |
15989 | { | |
15990 | unsigned_enum = 0; | |
15991 | flag_enum = 0; | |
15992 | } | |
55426c9d | 15993 | else |
edd45eb0 SM |
15994 | { |
15995 | if (count_one_bits_ll (value) >= 2) | |
15996 | flag_enum = 0; | |
edd45eb0 | 15997 | } |
55426c9d | 15998 | |
ed6acedd TT |
15999 | fields.emplace_back (); |
16000 | struct field &field = fields.back (); | |
16001 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16002 | SET_FIELD_ENUMVAL (field, value); | |
16003 | } | |
16004 | ||
16005 | if (!fields.empty ()) | |
16006 | { | |
5e33d5f4 | 16007 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16008 | type->set_fields |
16009 | ((struct field *) | |
16010 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16011 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16012 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16013 | } |
16014 | ||
16015 | if (unsigned_enum) | |
16016 | TYPE_UNSIGNED (type) = 1; | |
16017 | if (flag_enum) | |
16018 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16019 | } |
16020 | ||
134d01f1 DJ |
16021 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16022 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16023 | |
f792889a | 16024 | static struct type * |
134d01f1 | 16025 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16026 | { |
5e22e966 | 16027 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16028 | struct type *type; |
c906108c | 16029 | struct attribute *attr; |
0114d602 | 16030 | const char *name; |
134d01f1 | 16031 | |
348e048f DE |
16032 | /* If the definition of this type lives in .debug_types, read that type. |
16033 | Don't follow DW_AT_specification though, that will take us back up | |
16034 | the chain and we want to go down. */ | |
052c8bb8 | 16035 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16036 | if (attr != nullptr) |
348e048f | 16037 | { |
ac9ec31b | 16038 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16039 | |
ac9ec31b | 16040 | /* The type's CU may not be the same as CU. |
02142a6c | 16041 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16042 | return set_die_type (die, type, cu); |
16043 | } | |
16044 | ||
c906108c SS |
16045 | type = alloc_type (objfile); |
16046 | ||
67607e24 | 16047 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16048 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16049 | if (name != NULL) |
d0e39ea2 | 16050 | type->set_name (name); |
c906108c | 16051 | |
0626fc76 TT |
16052 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16053 | if (attr != NULL) | |
16054 | { | |
16055 | struct type *underlying_type = die_type (die, cu); | |
16056 | ||
16057 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16058 | } | |
16059 | ||
e142c38c | 16060 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16061 | if (attr != nullptr) |
c906108c SS |
16062 | { |
16063 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16064 | } | |
16065 | else | |
16066 | { | |
16067 | TYPE_LENGTH (type) = 0; | |
16068 | } | |
16069 | ||
2b4424c3 TT |
16070 | maybe_set_alignment (cu, die, type); |
16071 | ||
137033e9 JB |
16072 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16073 | declared as private in the package spec, and then defined only | |
16074 | inside the package body. Such types are known as Taft Amendment | |
16075 | Types. When another package uses such a type, an incomplete DIE | |
16076 | may be generated by the compiler. */ | |
02eb380e | 16077 | if (die_is_declaration (die, cu)) |
876cecd0 | 16078 | TYPE_STUB (type) = 1; |
02eb380e | 16079 | |
0626fc76 TT |
16080 | /* If this type has an underlying type that is not a stub, then we |
16081 | may use its attributes. We always use the "unsigned" attribute | |
16082 | in this situation, because ordinarily we guess whether the type | |
16083 | is unsigned -- but the guess can be wrong and the underlying type | |
16084 | can tell us the reality. However, we defer to a local size | |
16085 | attribute if one exists, because this lets the compiler override | |
16086 | the underlying type if needed. */ | |
16087 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16088 | { | |
9e7c9a03 HD |
16089 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16090 | underlying_type = check_typedef (underlying_type); | |
16091 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 16092 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16093 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 16094 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16095 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16096 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16097 | } |
16098 | ||
3d567982 TT |
16099 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16100 | ||
ed6acedd TT |
16101 | set_die_type (die, type, cu); |
16102 | ||
16103 | /* Finish the creation of this type by using the enum's children. | |
16104 | Note that, as usual, this must come after set_die_type to avoid | |
16105 | infinite recursion when trying to compute the names of the | |
16106 | enumerators. */ | |
16107 | update_enumeration_type_from_children (die, type, cu); | |
16108 | ||
16109 | return type; | |
134d01f1 DJ |
16110 | } |
16111 | ||
16112 | /* Given a pointer to a die which begins an enumeration, process all | |
16113 | the dies that define the members of the enumeration, and create the | |
16114 | symbol for the enumeration type. | |
16115 | ||
16116 | NOTE: We reverse the order of the element list. */ | |
16117 | ||
16118 | static void | |
16119 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16120 | { | |
f792889a | 16121 | struct type *this_type; |
134d01f1 | 16122 | |
f792889a DJ |
16123 | this_type = get_die_type (die, cu); |
16124 | if (this_type == NULL) | |
16125 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16126 | |
639d11d3 | 16127 | if (die->child != NULL) |
c906108c | 16128 | { |
9dc481d3 | 16129 | struct die_info *child_die; |
15d034d0 | 16130 | const char *name; |
9dc481d3 | 16131 | |
639d11d3 | 16132 | child_die = die->child; |
c906108c SS |
16133 | while (child_die && child_die->tag) |
16134 | { | |
16135 | if (child_die->tag != DW_TAG_enumerator) | |
16136 | { | |
e7c27a73 | 16137 | process_die (child_die, cu); |
c906108c SS |
16138 | } |
16139 | else | |
16140 | { | |
39cbfefa DJ |
16141 | name = dwarf2_name (child_die, cu); |
16142 | if (name) | |
ed6acedd | 16143 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16144 | } |
16145 | ||
436c571c | 16146 | child_die = child_die->sibling; |
c906108c | 16147 | } |
c906108c | 16148 | } |
134d01f1 | 16149 | |
6c83ed52 TT |
16150 | /* If we are reading an enum from a .debug_types unit, and the enum |
16151 | is a declaration, and the enum is not the signatured type in the | |
16152 | unit, then we do not want to add a symbol for it. Adding a | |
16153 | symbol would in some cases obscure the true definition of the | |
16154 | enum, giving users an incomplete type when the definition is | |
16155 | actually available. Note that we do not want to do this for all | |
16156 | enums which are just declarations, because C++0x allows forward | |
16157 | enum declarations. */ | |
3019eac3 | 16158 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16159 | && die_is_declaration (die, cu)) |
16160 | { | |
52dc124a | 16161 | struct signatured_type *sig_type; |
6c83ed52 | 16162 | |
c0f78cd4 | 16163 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16164 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16165 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16166 | return; |
16167 | } | |
16168 | ||
f792889a | 16169 | new_symbol (die, this_type, cu); |
c906108c SS |
16170 | } |
16171 | ||
16172 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16173 | the DIE's type field. For now, this only handles one dimensional | |
16174 | arrays. */ | |
16175 | ||
f792889a | 16176 | static struct type * |
e7c27a73 | 16177 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16178 | { |
5e22e966 | 16179 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16180 | struct die_info *child_die; |
7e314c57 | 16181 | struct type *type; |
c906108c | 16182 | struct type *element_type, *range_type, *index_type; |
c906108c | 16183 | struct attribute *attr; |
15d034d0 | 16184 | const char *name; |
a405673c | 16185 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16186 | unsigned int bit_stride = 0; |
c906108c | 16187 | |
e7c27a73 | 16188 | element_type = die_type (die, cu); |
c906108c | 16189 | |
7e314c57 JK |
16190 | /* The die_type call above may have already set the type for this DIE. */ |
16191 | type = get_die_type (die, cu); | |
16192 | if (type) | |
16193 | return type; | |
16194 | ||
dc53a7ad JB |
16195 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16196 | if (attr != NULL) | |
a405673c JB |
16197 | { |
16198 | int stride_ok; | |
293e7e51 | 16199 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16200 | |
16201 | byte_stride_prop | |
16202 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16203 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16204 | prop_type); | |
a405673c JB |
16205 | if (!stride_ok) |
16206 | { | |
b98664d3 | 16207 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16208 | " - DIE at %s [in module %s]"), |
16209 | sect_offset_str (die->sect_off), | |
5e22e966 | 16210 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16211 | /* Ignore this attribute. We will likely not be able to print |
16212 | arrays of this type correctly, but there is little we can do | |
16213 | to help if we cannot read the attribute's value. */ | |
16214 | byte_stride_prop = NULL; | |
16215 | } | |
16216 | } | |
dc53a7ad JB |
16217 | |
16218 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16219 | if (attr != NULL) | |
16220 | bit_stride = DW_UNSND (attr); | |
16221 | ||
c906108c SS |
16222 | /* Irix 6.2 native cc creates array types without children for |
16223 | arrays with unspecified length. */ | |
639d11d3 | 16224 | if (die->child == NULL) |
c906108c | 16225 | { |
46bf5051 | 16226 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16227 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16228 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16229 | byte_stride_prop, bit_stride); |
f792889a | 16230 | return set_die_type (die, type, cu); |
c906108c SS |
16231 | } |
16232 | ||
791afaa2 | 16233 | std::vector<struct type *> range_types; |
639d11d3 | 16234 | child_die = die->child; |
c906108c SS |
16235 | while (child_die && child_die->tag) |
16236 | { | |
16237 | if (child_die->tag == DW_TAG_subrange_type) | |
16238 | { | |
f792889a | 16239 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16240 | |
f792889a | 16241 | if (child_type != NULL) |
a02abb62 | 16242 | { |
0963b4bd MS |
16243 | /* The range type was succesfully read. Save it for the |
16244 | array type creation. */ | |
791afaa2 | 16245 | range_types.push_back (child_type); |
a02abb62 | 16246 | } |
c906108c | 16247 | } |
436c571c | 16248 | child_die = child_die->sibling; |
c906108c SS |
16249 | } |
16250 | ||
16251 | /* Dwarf2 dimensions are output from left to right, create the | |
16252 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16253 | |
c906108c | 16254 | type = element_type; |
7ca2d3a3 DL |
16255 | |
16256 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16257 | { | |
16258 | int i = 0; | |
9a619af0 | 16259 | |
791afaa2 | 16260 | while (i < range_types.size ()) |
dc53a7ad | 16261 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16262 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16263 | } |
16264 | else | |
16265 | { | |
791afaa2 | 16266 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16267 | while (ndim-- > 0) |
dc53a7ad | 16268 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16269 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16270 | } |
c906108c | 16271 | |
f5f8a009 EZ |
16272 | /* Understand Dwarf2 support for vector types (like they occur on |
16273 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16274 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16275 | custom vendor extension. The main difference between a regular | |
16276 | array and the vector variant is that vectors are passed by value | |
16277 | to functions. */ | |
e142c38c | 16278 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16279 | if (attr != nullptr) |
ea37ba09 | 16280 | make_vector_type (type); |
f5f8a009 | 16281 | |
dbc98a8b KW |
16282 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16283 | implementation may choose to implement triple vectors using this | |
16284 | attribute. */ | |
16285 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16286 | if (attr != nullptr) |
dbc98a8b KW |
16287 | { |
16288 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16289 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16290 | else | |
b98664d3 | 16291 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16292 | "than the total size of elements")); |
dbc98a8b KW |
16293 | } |
16294 | ||
39cbfefa DJ |
16295 | name = dwarf2_name (die, cu); |
16296 | if (name) | |
d0e39ea2 | 16297 | type->set_name (name); |
6e70227d | 16298 | |
2b4424c3 TT |
16299 | maybe_set_alignment (cu, die, type); |
16300 | ||
0963b4bd | 16301 | /* Install the type in the die. */ |
7e314c57 JK |
16302 | set_die_type (die, type, cu); |
16303 | ||
16304 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16305 | set_descriptive_type (type, die, cu); |
16306 | ||
7e314c57 | 16307 | return type; |
c906108c SS |
16308 | } |
16309 | ||
7ca2d3a3 | 16310 | static enum dwarf_array_dim_ordering |
6e70227d | 16311 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16312 | { |
16313 | struct attribute *attr; | |
16314 | ||
16315 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16316 | ||
435d3d88 | 16317 | if (attr != nullptr) |
aead7601 | 16318 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16319 | |
0963b4bd MS |
16320 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16321 | opposite order to the dwarf2 specification, but data is still | |
16322 | laid out as per normal fortran. | |
7ca2d3a3 | 16323 | |
0963b4bd MS |
16324 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16325 | version checking. */ | |
7ca2d3a3 | 16326 | |
905e0470 PM |
16327 | if (cu->language == language_fortran |
16328 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16329 | { |
16330 | return DW_ORD_row_major; | |
16331 | } | |
16332 | ||
6e70227d | 16333 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16334 | { |
16335 | case array_column_major: | |
16336 | return DW_ORD_col_major; | |
16337 | case array_row_major: | |
16338 | default: | |
16339 | return DW_ORD_row_major; | |
16340 | }; | |
16341 | } | |
16342 | ||
72019c9c | 16343 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16344 | the DIE's type field. */ |
72019c9c | 16345 | |
f792889a | 16346 | static struct type * |
72019c9c GM |
16347 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16348 | { | |
7e314c57 JK |
16349 | struct type *domain_type, *set_type; |
16350 | struct attribute *attr; | |
f792889a | 16351 | |
7e314c57 JK |
16352 | domain_type = die_type (die, cu); |
16353 | ||
16354 | /* The die_type call above may have already set the type for this DIE. */ | |
16355 | set_type = get_die_type (die, cu); | |
16356 | if (set_type) | |
16357 | return set_type; | |
16358 | ||
16359 | set_type = create_set_type (NULL, domain_type); | |
16360 | ||
16361 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16362 | if (attr != nullptr) |
d09039dd | 16363 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16364 | |
2b4424c3 TT |
16365 | maybe_set_alignment (cu, die, set_type); |
16366 | ||
f792889a | 16367 | return set_die_type (die, set_type, cu); |
72019c9c | 16368 | } |
7ca2d3a3 | 16369 | |
0971de02 TT |
16370 | /* A helper for read_common_block that creates a locexpr baton. |
16371 | SYM is the symbol which we are marking as computed. | |
16372 | COMMON_DIE is the DIE for the common block. | |
16373 | COMMON_LOC is the location expression attribute for the common | |
16374 | block itself. | |
16375 | MEMBER_LOC is the location expression attribute for the particular | |
16376 | member of the common block that we are processing. | |
16377 | CU is the CU from which the above come. */ | |
16378 | ||
16379 | static void | |
16380 | mark_common_block_symbol_computed (struct symbol *sym, | |
16381 | struct die_info *common_die, | |
16382 | struct attribute *common_loc, | |
16383 | struct attribute *member_loc, | |
16384 | struct dwarf2_cu *cu) | |
16385 | { | |
5e22e966 | 16386 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16387 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16388 | struct dwarf2_locexpr_baton *baton; |
16389 | gdb_byte *ptr; | |
16390 | unsigned int cu_off; | |
08feed99 | 16391 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16392 | LONGEST offset = 0; |
16393 | ||
16394 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16395 | gdb_assert (common_loc->form_is_block ()); |
16396 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16397 | || member_loc->form_is_constant ()); |
0971de02 | 16398 | |
8d749320 | 16399 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16400 | baton->per_objfile = per_objfile; |
0971de02 TT |
16401 | baton->per_cu = cu->per_cu; |
16402 | gdb_assert (baton->per_cu); | |
16403 | ||
16404 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16405 | ||
cd6c91b4 | 16406 | if (member_loc->form_is_constant ()) |
0971de02 | 16407 | { |
0826b30a | 16408 | offset = member_loc->constant_value (0); |
0971de02 TT |
16409 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16410 | } | |
16411 | else | |
16412 | baton->size += DW_BLOCK (member_loc)->size; | |
16413 | ||
224c3ddb | 16414 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16415 | baton->data = ptr; |
16416 | ||
16417 | *ptr++ = DW_OP_call4; | |
9c541725 | 16418 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16419 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16420 | ptr += 4; | |
16421 | ||
cd6c91b4 | 16422 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16423 | { |
16424 | *ptr++ = DW_OP_addr; | |
16425 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16426 | ptr += cu->header.addr_size; | |
16427 | } | |
16428 | else | |
16429 | { | |
16430 | /* We have to copy the data here, because DW_OP_call4 will only | |
16431 | use a DW_AT_location attribute. */ | |
16432 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16433 | ptr += DW_BLOCK (member_loc)->size; | |
16434 | } | |
16435 | ||
16436 | *ptr++ = DW_OP_plus; | |
16437 | gdb_assert (ptr - baton->data == baton->size); | |
16438 | ||
0971de02 | 16439 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16440 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16441 | } |
16442 | ||
4357ac6c TT |
16443 | /* Create appropriate locally-scoped variables for all the |
16444 | DW_TAG_common_block entries. Also create a struct common_block | |
16445 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16446 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16447 | variable names. */ |
c906108c SS |
16448 | |
16449 | static void | |
e7c27a73 | 16450 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16451 | { |
0971de02 TT |
16452 | struct attribute *attr; |
16453 | ||
16454 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16455 | if (attr != nullptr) |
0971de02 TT |
16456 | { |
16457 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16458 | if (attr->form_is_block ()) |
0971de02 TT |
16459 | { |
16460 | /* Ok. */ | |
16461 | } | |
cd6c91b4 | 16462 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16463 | { |
16464 | dwarf2_complex_location_expr_complaint (); | |
16465 | attr = NULL; | |
16466 | } | |
16467 | else | |
16468 | { | |
16469 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16470 | "common block member"); | |
16471 | attr = NULL; | |
16472 | } | |
16473 | } | |
16474 | ||
639d11d3 | 16475 | if (die->child != NULL) |
c906108c | 16476 | { |
5e22e966 | 16477 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
16478 | struct die_info *child_die; |
16479 | size_t n_entries = 0, size; | |
16480 | struct common_block *common_block; | |
16481 | struct symbol *sym; | |
74ac6d43 | 16482 | |
4357ac6c TT |
16483 | for (child_die = die->child; |
16484 | child_die && child_die->tag; | |
436c571c | 16485 | child_die = child_die->sibling) |
4357ac6c TT |
16486 | ++n_entries; |
16487 | ||
16488 | size = (sizeof (struct common_block) | |
16489 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16490 | common_block |
16491 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16492 | size); | |
4357ac6c TT |
16493 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16494 | common_block->n_entries = 0; | |
16495 | ||
16496 | for (child_die = die->child; | |
16497 | child_die && child_die->tag; | |
436c571c | 16498 | child_die = child_die->sibling) |
4357ac6c TT |
16499 | { |
16500 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16501 | symbol scope. */ | |
e7c27a73 | 16502 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16503 | if (sym != NULL) |
16504 | { | |
16505 | struct attribute *member_loc; | |
16506 | ||
16507 | common_block->contents[common_block->n_entries++] = sym; | |
16508 | ||
16509 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16510 | cu); | |
16511 | if (member_loc) | |
16512 | { | |
16513 | /* GDB has handled this for a long time, but it is | |
16514 | not specified by DWARF. It seems to have been | |
16515 | emitted by gfortran at least as recently as: | |
16516 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16517 | complaint (_("Variable in common block has " |
0971de02 | 16518 | "DW_AT_data_member_location " |
9d8780f0 SM |
16519 | "- DIE at %s [in module %s]"), |
16520 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16521 | objfile_name (objfile)); |
0971de02 | 16522 | |
cd6c91b4 | 16523 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16524 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16525 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16526 | || member_loc->form_is_block ()) |
0971de02 | 16527 | { |
435d3d88 | 16528 | if (attr != nullptr) |
0971de02 TT |
16529 | mark_common_block_symbol_computed (sym, die, attr, |
16530 | member_loc, cu); | |
16531 | } | |
16532 | else | |
16533 | dwarf2_complex_location_expr_complaint (); | |
16534 | } | |
16535 | } | |
c906108c | 16536 | } |
4357ac6c TT |
16537 | |
16538 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16539 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16540 | } |
16541 | } | |
16542 | ||
0114d602 | 16543 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16544 | |
0114d602 DJ |
16545 | static struct type * |
16546 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16547 | { |
5e22e966 | 16548 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16549 | const char *previous_prefix, *name; |
9219021c | 16550 | int is_anonymous; |
0114d602 DJ |
16551 | struct type *type; |
16552 | ||
16553 | /* For extensions, reuse the type of the original namespace. */ | |
16554 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16555 | { | |
16556 | struct die_info *ext_die; | |
16557 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16558 | |
0114d602 DJ |
16559 | ext_die = dwarf2_extension (die, &ext_cu); |
16560 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16561 | |
16562 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16563 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16564 | return set_die_type (die, type, cu); |
16565 | } | |
9219021c | 16566 | |
e142c38c | 16567 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16568 | |
16569 | /* Now build the name of the current namespace. */ | |
16570 | ||
0114d602 DJ |
16571 | previous_prefix = determine_prefix (die, cu); |
16572 | if (previous_prefix[0] != '\0') | |
16573 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16574 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16575 | |
16576 | /* Create the type. */ | |
19f392bc | 16577 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16578 | |
60531b24 | 16579 | return set_die_type (die, type, cu); |
0114d602 DJ |
16580 | } |
16581 | ||
22cee43f | 16582 | /* Read a namespace scope. */ |
0114d602 DJ |
16583 | |
16584 | static void | |
16585 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16586 | { | |
5e22e966 | 16587 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16588 | int is_anonymous; |
9219021c | 16589 | |
5c4e30ca DC |
16590 | /* Add a symbol associated to this if we haven't seen the namespace |
16591 | before. Also, add a using directive if it's an anonymous | |
16592 | namespace. */ | |
9219021c | 16593 | |
f2f0e013 | 16594 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16595 | { |
16596 | struct type *type; | |
16597 | ||
0114d602 | 16598 | type = read_type_die (die, cu); |
e7c27a73 | 16599 | new_symbol (die, type, cu); |
5c4e30ca | 16600 | |
e8e80198 | 16601 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16602 | if (is_anonymous) |
0114d602 DJ |
16603 | { |
16604 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16605 | |
eb1e02fd | 16606 | std::vector<const char *> excludes; |
804d2729 | 16607 | add_using_directive (using_directives (cu), |
7d93a1e0 | 16608 | previous_prefix, type->name (), NULL, |
eb1e02fd | 16609 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16610 | } |
5c4e30ca | 16611 | } |
9219021c | 16612 | |
639d11d3 | 16613 | if (die->child != NULL) |
d9fa45fe | 16614 | { |
639d11d3 | 16615 | struct die_info *child_die = die->child; |
6e70227d | 16616 | |
d9fa45fe DC |
16617 | while (child_die && child_die->tag) |
16618 | { | |
e7c27a73 | 16619 | process_die (child_die, cu); |
436c571c | 16620 | child_die = child_die->sibling; |
d9fa45fe DC |
16621 | } |
16622 | } | |
38d518c9 EZ |
16623 | } |
16624 | ||
f55ee35c JK |
16625 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16626 | imported module. Still we need that type as local Fortran "use ... only" | |
16627 | declaration imports depend on the created type in determine_prefix. */ | |
16628 | ||
16629 | static struct type * | |
16630 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16631 | { | |
5e22e966 | 16632 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 16633 | const char *module_name; |
f55ee35c JK |
16634 | struct type *type; |
16635 | ||
16636 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16637 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16638 | |
f55ee35c JK |
16639 | return set_die_type (die, type, cu); |
16640 | } | |
16641 | ||
5d7cb8df JK |
16642 | /* Read a Fortran module. */ |
16643 | ||
16644 | static void | |
16645 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16646 | { | |
16647 | struct die_info *child_die = die->child; | |
530e8392 KB |
16648 | struct type *type; |
16649 | ||
16650 | type = read_type_die (die, cu); | |
16651 | new_symbol (die, type, cu); | |
5d7cb8df | 16652 | |
5d7cb8df JK |
16653 | while (child_die && child_die->tag) |
16654 | { | |
16655 | process_die (child_die, cu); | |
436c571c | 16656 | child_die = child_die->sibling; |
5d7cb8df JK |
16657 | } |
16658 | } | |
16659 | ||
38d518c9 EZ |
16660 | /* Return the name of the namespace represented by DIE. Set |
16661 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16662 | namespace. */ | |
16663 | ||
16664 | static const char * | |
e142c38c | 16665 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16666 | { |
16667 | struct die_info *current_die; | |
16668 | const char *name = NULL; | |
16669 | ||
16670 | /* Loop through the extensions until we find a name. */ | |
16671 | ||
16672 | for (current_die = die; | |
16673 | current_die != NULL; | |
f2f0e013 | 16674 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16675 | { |
96553a0c DE |
16676 | /* We don't use dwarf2_name here so that we can detect the absence |
16677 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16678 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16679 | |
38d518c9 EZ |
16680 | if (name != NULL) |
16681 | break; | |
16682 | } | |
16683 | ||
16684 | /* Is it an anonymous namespace? */ | |
16685 | ||
16686 | *is_anonymous = (name == NULL); | |
16687 | if (*is_anonymous) | |
2b1dbab0 | 16688 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16689 | |
16690 | return name; | |
d9fa45fe DC |
16691 | } |
16692 | ||
c906108c SS |
16693 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16694 | the user defined type vector. */ | |
16695 | ||
f792889a | 16696 | static struct type * |
e7c27a73 | 16697 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16698 | { |
5e22e966 | 16699 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 16700 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16701 | struct type *type; |
8b2dbe47 KB |
16702 | struct attribute *attr_byte_size; |
16703 | struct attribute *attr_address_class; | |
16704 | int byte_size, addr_class; | |
7e314c57 JK |
16705 | struct type *target_type; |
16706 | ||
16707 | target_type = die_type (die, cu); | |
c906108c | 16708 | |
7e314c57 JK |
16709 | /* The die_type call above may have already set the type for this DIE. */ |
16710 | type = get_die_type (die, cu); | |
16711 | if (type) | |
16712 | return type; | |
16713 | ||
16714 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16715 | |
e142c38c | 16716 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16717 | if (attr_byte_size) |
16718 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16719 | else |
8b2dbe47 KB |
16720 | byte_size = cu_header->addr_size; |
16721 | ||
e142c38c | 16722 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16723 | if (attr_address_class) |
16724 | addr_class = DW_UNSND (attr_address_class); | |
16725 | else | |
16726 | addr_class = DW_ADDR_none; | |
16727 | ||
2b4424c3 TT |
16728 | ULONGEST alignment = get_alignment (cu, die); |
16729 | ||
16730 | /* If the pointer size, alignment, or address class is different | |
16731 | than the default, create a type variant marked as such and set | |
16732 | the length accordingly. */ | |
16733 | if (TYPE_LENGTH (type) != byte_size | |
16734 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16735 | && alignment != TYPE_RAW_ALIGN (type)) | |
16736 | || addr_class != DW_ADDR_none) | |
c906108c | 16737 | { |
5e2b427d | 16738 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16739 | { |
16740 | int type_flags; | |
16741 | ||
849957d9 | 16742 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16743 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16744 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16745 | == 0); | |
8b2dbe47 KB |
16746 | type = make_type_with_address_space (type, type_flags); |
16747 | } | |
16748 | else if (TYPE_LENGTH (type) != byte_size) | |
16749 | { | |
b98664d3 | 16750 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16751 | } |
2b4424c3 TT |
16752 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16753 | { | |
b98664d3 | 16754 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16755 | " - DIE at %s [in module %s]"), |
16756 | sect_offset_str (die->sect_off), | |
5e22e966 | 16757 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16758 | } |
6e70227d | 16759 | else |
9a619af0 MS |
16760 | { |
16761 | /* Should we also complain about unhandled address classes? */ | |
16762 | } | |
c906108c | 16763 | } |
8b2dbe47 KB |
16764 | |
16765 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16766 | set_type_align (type, alignment); |
f792889a | 16767 | return set_die_type (die, type, cu); |
c906108c SS |
16768 | } |
16769 | ||
16770 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16771 | the user defined type vector. */ | |
16772 | ||
f792889a | 16773 | static struct type * |
e7c27a73 | 16774 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16775 | { |
16776 | struct type *type; | |
16777 | struct type *to_type; | |
16778 | struct type *domain; | |
16779 | ||
e7c27a73 DJ |
16780 | to_type = die_type (die, cu); |
16781 | domain = die_containing_type (die, cu); | |
0d5de010 | 16782 | |
7e314c57 JK |
16783 | /* The calls above may have already set the type for this DIE. */ |
16784 | type = get_die_type (die, cu); | |
16785 | if (type) | |
16786 | return type; | |
16787 | ||
78134374 | 16788 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 16789 | type = lookup_methodptr_type (to_type); |
78134374 | 16790 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 16791 | { |
5e22e966 | 16792 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
16793 | |
16794 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 16795 | to_type->fields (), to_type->num_fields (), |
7078baeb TT |
16796 | TYPE_VARARGS (to_type)); |
16797 | type = lookup_methodptr_type (new_type); | |
16798 | } | |
0d5de010 DJ |
16799 | else |
16800 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16801 | |
f792889a | 16802 | return set_die_type (die, type, cu); |
c906108c SS |
16803 | } |
16804 | ||
4297a3f0 | 16805 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16806 | the user defined type vector. */ |
16807 | ||
f792889a | 16808 | static struct type * |
4297a3f0 AV |
16809 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16810 | enum type_code refcode) | |
c906108c | 16811 | { |
e7c27a73 | 16812 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16813 | struct type *type, *target_type; |
c906108c SS |
16814 | struct attribute *attr; |
16815 | ||
4297a3f0 AV |
16816 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16817 | ||
7e314c57 JK |
16818 | target_type = die_type (die, cu); |
16819 | ||
16820 | /* The die_type call above may have already set the type for this DIE. */ | |
16821 | type = get_die_type (die, cu); | |
16822 | if (type) | |
16823 | return type; | |
16824 | ||
4297a3f0 | 16825 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16826 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16827 | if (attr != nullptr) |
c906108c SS |
16828 | { |
16829 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16830 | } | |
16831 | else | |
16832 | { | |
107d2387 | 16833 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16834 | } |
2b4424c3 | 16835 | maybe_set_alignment (cu, die, type); |
f792889a | 16836 | return set_die_type (die, type, cu); |
c906108c SS |
16837 | } |
16838 | ||
cf363f18 MW |
16839 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16840 | outputs DWARF type qualifiers that apply to an array, not the | |
16841 | element type. But GDB relies on the array element type to carry | |
16842 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16843 | specification. */ | |
16844 | ||
16845 | static struct type * | |
16846 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16847 | struct type *base_type, int cnst, int voltl) | |
16848 | { | |
16849 | struct type *el_type, *inner_array; | |
16850 | ||
16851 | base_type = copy_type (base_type); | |
16852 | inner_array = base_type; | |
16853 | ||
78134374 | 16854 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16855 | { |
16856 | TYPE_TARGET_TYPE (inner_array) = | |
16857 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16858 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16859 | } | |
16860 | ||
16861 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16862 | cnst |= TYPE_CONST (el_type); | |
16863 | voltl |= TYPE_VOLATILE (el_type); | |
16864 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16865 | ||
16866 | return set_die_type (die, base_type, cu); | |
16867 | } | |
16868 | ||
f792889a | 16869 | static struct type * |
e7c27a73 | 16870 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16871 | { |
f792889a | 16872 | struct type *base_type, *cv_type; |
c906108c | 16873 | |
e7c27a73 | 16874 | base_type = die_type (die, cu); |
7e314c57 JK |
16875 | |
16876 | /* The die_type call above may have already set the type for this DIE. */ | |
16877 | cv_type = get_die_type (die, cu); | |
16878 | if (cv_type) | |
16879 | return cv_type; | |
16880 | ||
2f608a3a KW |
16881 | /* In case the const qualifier is applied to an array type, the element type |
16882 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 16883 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 16884 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16885 | |
f792889a DJ |
16886 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16887 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16888 | } |
16889 | ||
f792889a | 16890 | static struct type * |
e7c27a73 | 16891 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16892 | { |
f792889a | 16893 | struct type *base_type, *cv_type; |
c906108c | 16894 | |
e7c27a73 | 16895 | base_type = die_type (die, cu); |
7e314c57 JK |
16896 | |
16897 | /* The die_type call above may have already set the type for this DIE. */ | |
16898 | cv_type = get_die_type (die, cu); | |
16899 | if (cv_type) | |
16900 | return cv_type; | |
16901 | ||
cf363f18 MW |
16902 | /* In case the volatile qualifier is applied to an array type, the |
16903 | element type is so qualified, not the array type (section 6.7.3 | |
16904 | of C99). */ | |
78134374 | 16905 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16906 | return add_array_cv_type (die, cu, base_type, 0, 1); |
16907 | ||
f792889a DJ |
16908 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16909 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16910 | } |
16911 | ||
06d66ee9 TT |
16912 | /* Handle DW_TAG_restrict_type. */ |
16913 | ||
16914 | static struct type * | |
16915 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16916 | { | |
16917 | struct type *base_type, *cv_type; | |
16918 | ||
16919 | base_type = die_type (die, cu); | |
16920 | ||
16921 | /* The die_type call above may have already set the type for this DIE. */ | |
16922 | cv_type = get_die_type (die, cu); | |
16923 | if (cv_type) | |
16924 | return cv_type; | |
16925 | ||
16926 | cv_type = make_restrict_type (base_type); | |
16927 | return set_die_type (die, cv_type, cu); | |
16928 | } | |
16929 | ||
a2c2acaf MW |
16930 | /* Handle DW_TAG_atomic_type. */ |
16931 | ||
16932 | static struct type * | |
16933 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16934 | { | |
16935 | struct type *base_type, *cv_type; | |
16936 | ||
16937 | base_type = die_type (die, cu); | |
16938 | ||
16939 | /* The die_type call above may have already set the type for this DIE. */ | |
16940 | cv_type = get_die_type (die, cu); | |
16941 | if (cv_type) | |
16942 | return cv_type; | |
16943 | ||
16944 | cv_type = make_atomic_type (base_type); | |
16945 | return set_die_type (die, cv_type, cu); | |
16946 | } | |
16947 | ||
c906108c SS |
16948 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16949 | the user defined type vector. It isn't really a user defined type, | |
16950 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16951 | attribute to reference it. */ | |
16952 | ||
f792889a | 16953 | static struct type * |
e7c27a73 | 16954 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16955 | { |
5e22e966 | 16956 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 16957 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
16958 | struct type *type, *range_type, *index_type, *char_type; |
16959 | struct attribute *attr; | |
216a7e6b AB |
16960 | struct dynamic_prop prop; |
16961 | bool length_is_constant = true; | |
16962 | LONGEST length; | |
16963 | ||
16964 | /* There are a couple of places where bit sizes might be made use of | |
16965 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16966 | of make use of these. Handling bit sizes that are a multiple of the | |
16967 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16968 | with that problem when we have to. Warn about these attributes being | |
16969 | unsupported, then parse the type and ignore them like we always | |
16970 | have. */ | |
16971 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16972 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16973 | { | |
16974 | static bool warning_printed = false; | |
16975 | if (!warning_printed) | |
16976 | { | |
16977 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16978 | "currently supported on DW_TAG_string_type.")); | |
16979 | warning_printed = true; | |
16980 | } | |
16981 | } | |
c906108c | 16982 | |
e142c38c | 16983 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16984 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16985 | { |
16986 | /* The string length describes the location at which the length of | |
16987 | the string can be found. The size of the length field can be | |
16988 | specified with one of the attributes below. */ | |
16989 | struct type *prop_type; | |
16990 | struct attribute *len | |
16991 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16992 | if (len == nullptr) | |
16993 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16994 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16995 | { |
16996 | /* Pass 0 as the default as we know this attribute is constant | |
16997 | and the default value will not be returned. */ | |
0826b30a | 16998 | LONGEST sz = len->constant_value (0); |
293e7e51 | 16999 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17000 | } |
17001 | else | |
17002 | { | |
17003 | /* If the size is not specified then we assume it is the size of | |
17004 | an address on this target. */ | |
293e7e51 | 17005 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17006 | } |
17007 | ||
17008 | /* Convert the attribute into a dynamic property. */ | |
17009 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17010 | length = 1; | |
17011 | else | |
17012 | length_is_constant = false; | |
17013 | } | |
17014 | else if (attr != nullptr) | |
17015 | { | |
17016 | /* This DW_AT_string_length just contains the length with no | |
17017 | indirection. There's no need to create a dynamic property in this | |
17018 | case. Pass 0 for the default value as we know it will not be | |
17019 | returned in this case. */ | |
0826b30a | 17020 | length = attr->constant_value (0); |
216a7e6b AB |
17021 | } |
17022 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17023 | { |
216a7e6b | 17024 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17025 | length = attr->constant_value (1); |
c906108c SS |
17026 | } |
17027 | else | |
17028 | { | |
216a7e6b AB |
17029 | /* Use 1 as a fallback length if we have nothing else. */ |
17030 | length = 1; | |
c906108c | 17031 | } |
6ccb9162 | 17032 | |
46bf5051 | 17033 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17034 | if (length_is_constant) |
17035 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17036 | else | |
17037 | { | |
17038 | struct dynamic_prop low_bound; | |
17039 | ||
17040 | low_bound.kind = PROP_CONST; | |
17041 | low_bound.data.const_val = 1; | |
17042 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17043 | } | |
3b7538c0 UW |
17044 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17045 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17046 | |
f792889a | 17047 | return set_die_type (die, type, cu); |
c906108c SS |
17048 | } |
17049 | ||
4d804846 JB |
17050 | /* Assuming that DIE corresponds to a function, returns nonzero |
17051 | if the function is prototyped. */ | |
17052 | ||
17053 | static int | |
17054 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17055 | { | |
17056 | struct attribute *attr; | |
17057 | ||
17058 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17059 | if (attr && (DW_UNSND (attr) != 0)) | |
17060 | return 1; | |
17061 | ||
17062 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17063 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17064 | languages that allow unprototyped functions (Eg: Objective C). |
17065 | For all other languages, assume that functions are always | |
17066 | prototyped. */ | |
17067 | if (cu->language != language_c | |
17068 | && cu->language != language_objc | |
17069 | && cu->language != language_opencl) | |
17070 | return 1; | |
17071 | ||
17072 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17073 | prototyped and unprototyped functions; default to prototyped, | |
17074 | since that is more common in modern code (and RealView warns | |
17075 | about unprototyped functions). */ | |
17076 | if (producer_is_realview (cu->producer)) | |
17077 | return 1; | |
17078 | ||
17079 | return 0; | |
17080 | } | |
17081 | ||
c906108c SS |
17082 | /* Handle DIES due to C code like: |
17083 | ||
17084 | struct foo | |
c5aa993b JM |
17085 | { |
17086 | int (*funcp)(int a, long l); | |
17087 | int b; | |
17088 | }; | |
c906108c | 17089 | |
0963b4bd | 17090 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17091 | |
f792889a | 17092 | static struct type * |
e7c27a73 | 17093 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17094 | { |
5e22e966 | 17095 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17096 | struct type *type; /* Type that this function returns. */ |
17097 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17098 | struct attribute *attr; |
17099 | ||
e7c27a73 | 17100 | type = die_type (die, cu); |
7e314c57 JK |
17101 | |
17102 | /* The die_type call above may have already set the type for this DIE. */ | |
17103 | ftype = get_die_type (die, cu); | |
17104 | if (ftype) | |
17105 | return ftype; | |
17106 | ||
0c8b41f1 | 17107 | ftype = lookup_function_type (type); |
c906108c | 17108 | |
4d804846 | 17109 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17110 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17111 | |
c055b101 CV |
17112 | /* Store the calling convention in the type if it's available in |
17113 | the subroutine die. Otherwise set the calling convention to | |
17114 | the default value DW_CC_normal. */ | |
17115 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17116 | if (attr != nullptr |
17117 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17118 | TYPE_CALLING_CONVENTION (ftype) | |
17119 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17120 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17121 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17122 | else | |
17123 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17124 | |
743649fd MW |
17125 | /* Record whether the function returns normally to its caller or not |
17126 | if the DWARF producer set that information. */ | |
17127 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17128 | if (attr && (DW_UNSND (attr) != 0)) | |
17129 | TYPE_NO_RETURN (ftype) = 1; | |
17130 | ||
76c10ea2 GM |
17131 | /* We need to add the subroutine type to the die immediately so |
17132 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17133 | declared as the same subroutine type. */ |
76c10ea2 | 17134 | set_die_type (die, ftype, cu); |
6e70227d | 17135 | |
639d11d3 | 17136 | if (die->child != NULL) |
c906108c | 17137 | { |
bb5ed363 | 17138 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17139 | struct die_info *child_die; |
8072405b | 17140 | int nparams, iparams; |
c906108c SS |
17141 | |
17142 | /* Count the number of parameters. | |
17143 | FIXME: GDB currently ignores vararg functions, but knows about | |
17144 | vararg member functions. */ | |
8072405b | 17145 | nparams = 0; |
639d11d3 | 17146 | child_die = die->child; |
c906108c SS |
17147 | while (child_die && child_die->tag) |
17148 | { | |
17149 | if (child_die->tag == DW_TAG_formal_parameter) | |
17150 | nparams++; | |
17151 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17152 | TYPE_VARARGS (ftype) = 1; |
436c571c | 17153 | child_die = child_die->sibling; |
c906108c SS |
17154 | } |
17155 | ||
17156 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17157 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17158 | ftype->set_fields |
17159 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17160 | |
8072405b JK |
17161 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17162 | even if we error out during the parameters reading below. */ | |
17163 | for (iparams = 0; iparams < nparams; iparams++) | |
17164 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17165 | ||
17166 | iparams = 0; | |
639d11d3 | 17167 | child_die = die->child; |
c906108c SS |
17168 | while (child_die && child_die->tag) |
17169 | { | |
17170 | if (child_die->tag == DW_TAG_formal_parameter) | |
17171 | { | |
3ce3b1ba PA |
17172 | struct type *arg_type; |
17173 | ||
17174 | /* DWARF version 2 has no clean way to discern C++ | |
17175 | static and non-static member functions. G++ helps | |
17176 | GDB by marking the first parameter for non-static | |
17177 | member functions (which is the this pointer) as | |
17178 | artificial. We pass this information to | |
17179 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17180 | ||
17181 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17182 | 4.5 does not yet generate. */ | |
e142c38c | 17183 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17184 | if (attr != nullptr) |
c906108c SS |
17185 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17186 | else | |
9c37b5ae | 17187 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17188 | arg_type = die_type (child_die, cu); |
17189 | ||
17190 | /* RealView does not mark THIS as const, which the testsuite | |
17191 | expects. GCC marks THIS as const in method definitions, | |
17192 | but not in the class specifications (GCC PR 43053). */ | |
17193 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17194 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17195 | { | |
17196 | int is_this = 0; | |
17197 | struct dwarf2_cu *arg_cu = cu; | |
17198 | const char *name = dwarf2_name (child_die, cu); | |
17199 | ||
17200 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17201 | if (attr != nullptr) |
3ce3b1ba PA |
17202 | { |
17203 | /* If the compiler emits this, use it. */ | |
17204 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17205 | is_this = 1; | |
17206 | } | |
17207 | else if (name && strcmp (name, "this") == 0) | |
17208 | /* Function definitions will have the argument names. */ | |
17209 | is_this = 1; | |
17210 | else if (name == NULL && iparams == 0) | |
17211 | /* Declarations may not have the names, so like | |
17212 | elsewhere in GDB, assume an artificial first | |
17213 | argument is "this". */ | |
17214 | is_this = 1; | |
17215 | ||
17216 | if (is_this) | |
17217 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17218 | arg_type, 0); | |
17219 | } | |
17220 | ||
17221 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17222 | iparams++; |
17223 | } | |
436c571c | 17224 | child_die = child_die->sibling; |
c906108c SS |
17225 | } |
17226 | } | |
17227 | ||
76c10ea2 | 17228 | return ftype; |
c906108c SS |
17229 | } |
17230 | ||
f792889a | 17231 | static struct type * |
e7c27a73 | 17232 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17233 | { |
5e22e966 | 17234 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17235 | const char *name = NULL; |
3c8e0968 | 17236 | struct type *this_type, *target_type; |
c906108c | 17237 | |
94af9270 | 17238 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17239 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17240 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17241 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17242 | target_type = die_type (die, cu); |
17243 | if (target_type != this_type) | |
17244 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17245 | else | |
17246 | { | |
17247 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17248 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17249 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17250 | "- DIE at %s [in module %s]"), |
17251 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17252 | TYPE_TARGET_TYPE (this_type) = NULL; |
17253 | } | |
e4003a34 TV |
17254 | if (name == NULL) |
17255 | { | |
17256 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17257 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17258 | Handle these by just returning the target type, rather than | |
17259 | constructing an anonymous typedef type and trying to handle this | |
17260 | elsewhere. */ | |
17261 | set_die_type (die, target_type, cu); | |
17262 | return target_type; | |
17263 | } | |
f792889a | 17264 | return this_type; |
c906108c SS |
17265 | } |
17266 | ||
9b790ce7 UW |
17267 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17268 | (which may be different from NAME) to the architecture back-end to allow | |
17269 | it to guess the correct format if necessary. */ | |
17270 | ||
17271 | static struct type * | |
17272 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17273 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17274 | { |
08feed99 | 17275 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17276 | const struct floatformat **format; |
17277 | struct type *type; | |
17278 | ||
17279 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17280 | if (format) | |
103a685e | 17281 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17282 | else |
77b7c781 | 17283 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17284 | |
17285 | return type; | |
17286 | } | |
17287 | ||
eb77c9df AB |
17288 | /* Allocate an integer type of size BITS and name NAME. */ |
17289 | ||
17290 | static struct type * | |
17291 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17292 | int bits, int unsigned_p, const char *name) | |
17293 | { | |
17294 | struct type *type; | |
17295 | ||
17296 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17297 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17298 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17299 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17300 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17301 | type = objfile_type (objfile)->builtin_void; |
17302 | else | |
17303 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17304 | ||
17305 | return type; | |
17306 | } | |
17307 | ||
8bdc1658 AB |
17308 | /* Initialise and return a floating point type of size BITS suitable for |
17309 | use as a component of a complex number. The NAME_HINT is passed through | |
17310 | when initialising the floating point type and is the name of the complex | |
17311 | type. | |
17312 | ||
17313 | As DWARF doesn't currently provide an explicit name for the components | |
17314 | of a complex number, but it can be helpful to have these components | |
17315 | named, we try to select a suitable name based on the size of the | |
17316 | component. */ | |
17317 | static struct type * | |
17318 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17319 | struct objfile *objfile, | |
103a685e TT |
17320 | int bits, const char *name_hint, |
17321 | enum bfd_endian byte_order) | |
8bdc1658 | 17322 | { |
08feed99 | 17323 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17324 | struct type *tt = nullptr; |
17325 | ||
35add35e AB |
17326 | /* Try to find a suitable floating point builtin type of size BITS. |
17327 | We're going to use the name of this type as the name for the complex | |
17328 | target type that we are about to create. */ | |
1db455a7 | 17329 | switch (cu->language) |
8bdc1658 | 17330 | { |
1db455a7 AB |
17331 | case language_fortran: |
17332 | switch (bits) | |
17333 | { | |
17334 | case 32: | |
17335 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17336 | break; | |
17337 | case 64: | |
17338 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17339 | break; | |
17340 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17341 | case 128: | |
17342 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17343 | break; | |
17344 | } | |
8bdc1658 | 17345 | break; |
1db455a7 AB |
17346 | default: |
17347 | switch (bits) | |
17348 | { | |
17349 | case 32: | |
17350 | tt = builtin_type (gdbarch)->builtin_float; | |
17351 | break; | |
17352 | case 64: | |
17353 | tt = builtin_type (gdbarch)->builtin_double; | |
17354 | break; | |
17355 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17356 | case 128: | |
17357 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17358 | break; | |
17359 | } | |
8bdc1658 AB |
17360 | break; |
17361 | } | |
17362 | ||
35add35e AB |
17363 | /* If the type we found doesn't match the size we were looking for, then |
17364 | pretend we didn't find a type at all, the complex target type we | |
17365 | create will then be nameless. */ | |
a12e5744 | 17366 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17367 | tt = nullptr; |
17368 | ||
7d93a1e0 | 17369 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17370 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17371 | } |
17372 | ||
c906108c SS |
17373 | /* Find a representation of a given base type and install |
17374 | it in the TYPE field of the die. */ | |
17375 | ||
f792889a | 17376 | static struct type * |
e7c27a73 | 17377 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17378 | { |
5e22e966 | 17379 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17380 | struct type *type; |
17381 | struct attribute *attr; | |
19f392bc | 17382 | int encoding = 0, bits = 0; |
15d034d0 | 17383 | const char *name; |
34877895 | 17384 | gdbarch *arch; |
c906108c | 17385 | |
e142c38c | 17386 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17387 | if (attr != nullptr) |
34877895 | 17388 | encoding = DW_UNSND (attr); |
e142c38c | 17389 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17390 | if (attr != nullptr) |
34877895 | 17391 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17392 | name = dwarf2_name (die, cu); |
6ccb9162 | 17393 | if (!name) |
34877895 | 17394 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17395 | |
08feed99 | 17396 | arch = objfile->arch (); |
103a685e TT |
17397 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17398 | ||
34877895 PJ |
17399 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17400 | if (attr) | |
103a685e TT |
17401 | { |
17402 | int endianity = DW_UNSND (attr); | |
17403 | ||
17404 | switch (endianity) | |
17405 | { | |
17406 | case DW_END_big: | |
17407 | byte_order = BFD_ENDIAN_BIG; | |
17408 | break; | |
17409 | case DW_END_little: | |
17410 | byte_order = BFD_ENDIAN_LITTLE; | |
17411 | break; | |
17412 | default: | |
17413 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17414 | break; | |
17415 | } | |
17416 | } | |
6ccb9162 UW |
17417 | |
17418 | switch (encoding) | |
c906108c | 17419 | { |
6ccb9162 UW |
17420 | case DW_ATE_address: |
17421 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17422 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17423 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17424 | break; |
17425 | case DW_ATE_boolean: | |
19f392bc | 17426 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17427 | break; |
17428 | case DW_ATE_complex_float: | |
103a685e TT |
17429 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17430 | byte_order); | |
78134374 | 17431 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17432 | { |
17433 | if (name == nullptr) | |
17434 | { | |
17435 | struct obstack *obstack | |
5e22e966 | 17436 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17437 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17438 | nullptr); |
17439 | } | |
17440 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17441 | } | |
17442 | else | |
17443 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17444 | break; |
17445 | case DW_ATE_decimal_float: | |
19f392bc | 17446 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17447 | break; |
17448 | case DW_ATE_float: | |
103a685e | 17449 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17450 | break; |
17451 | case DW_ATE_signed: | |
eb77c9df | 17452 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17453 | break; |
17454 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17455 | if (cu->language == language_fortran |
17456 | && name | |
61012eef | 17457 | && startswith (name, "character(")) |
19f392bc UW |
17458 | type = init_character_type (objfile, bits, 1, name); |
17459 | else | |
eb77c9df | 17460 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17461 | break; |
17462 | case DW_ATE_signed_char: | |
6e70227d | 17463 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17464 | || cu->language == language_pascal |
17465 | || cu->language == language_fortran) | |
19f392bc UW |
17466 | type = init_character_type (objfile, bits, 0, name); |
17467 | else | |
eb77c9df | 17468 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17469 | break; |
17470 | case DW_ATE_unsigned_char: | |
868a0084 | 17471 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17472 | || cu->language == language_pascal |
c44af4eb TT |
17473 | || cu->language == language_fortran |
17474 | || cu->language == language_rust) | |
19f392bc UW |
17475 | type = init_character_type (objfile, bits, 1, name); |
17476 | else | |
eb77c9df | 17477 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17478 | break; |
75079b2b | 17479 | case DW_ATE_UTF: |
53e710ac | 17480 | { |
53e710ac PA |
17481 | if (bits == 16) |
17482 | type = builtin_type (arch)->builtin_char16; | |
17483 | else if (bits == 32) | |
17484 | type = builtin_type (arch)->builtin_char32; | |
17485 | else | |
17486 | { | |
b98664d3 | 17487 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17488 | bits); |
eb77c9df | 17489 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17490 | } |
17491 | return set_die_type (die, type, cu); | |
17492 | } | |
75079b2b TT |
17493 | break; |
17494 | ||
6ccb9162 | 17495 | default: |
b98664d3 | 17496 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17497 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17498 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17499 | break; |
c906108c | 17500 | } |
6ccb9162 | 17501 | |
0114d602 | 17502 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17503 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17504 | |
2b4424c3 TT |
17505 | maybe_set_alignment (cu, die, type); |
17506 | ||
103a685e | 17507 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17508 | |
f792889a | 17509 | return set_die_type (die, type, cu); |
c906108c SS |
17510 | } |
17511 | ||
80180f79 SA |
17512 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17513 | resulting value of the attribute into struct bound_prop. | |
17514 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17515 | ||
17516 | static int | |
17517 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17518 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17519 | struct type *default_type) | |
80180f79 SA |
17520 | { |
17521 | struct dwarf2_property_baton *baton; | |
5e22e966 | 17522 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
17523 | struct objfile *objfile = per_objfile->objfile; |
17524 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 17525 | |
9a49df9d AB |
17526 | gdb_assert (default_type != NULL); |
17527 | ||
80180f79 SA |
17528 | if (attr == NULL || prop == NULL) |
17529 | return 0; | |
17530 | ||
4fc6c0d5 | 17531 | if (attr->form_is_block ()) |
80180f79 | 17532 | { |
8d749320 | 17533 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17534 | baton->property_type = default_type; |
80180f79 | 17535 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17536 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
17537 | baton->locexpr.size = DW_BLOCK (attr)->size; |
17538 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17539 | switch (attr->name) |
17540 | { | |
17541 | case DW_AT_string_length: | |
17542 | baton->locexpr.is_reference = true; | |
17543 | break; | |
17544 | default: | |
17545 | baton->locexpr.is_reference = false; | |
17546 | break; | |
17547 | } | |
80180f79 SA |
17548 | prop->data.baton = baton; |
17549 | prop->kind = PROP_LOCEXPR; | |
17550 | gdb_assert (prop->data.baton != NULL); | |
17551 | } | |
cd6c91b4 | 17552 | else if (attr->form_is_ref ()) |
80180f79 SA |
17553 | { |
17554 | struct dwarf2_cu *target_cu = cu; | |
17555 | struct die_info *target_die; | |
17556 | struct attribute *target_attr; | |
17557 | ||
17558 | target_die = follow_die_ref (die, attr, &target_cu); | |
17559 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17560 | if (target_attr == NULL) |
17561 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17562 | target_cu); | |
80180f79 SA |
17563 | if (target_attr == NULL) |
17564 | return 0; | |
17565 | ||
df25ebbd | 17566 | switch (target_attr->name) |
80180f79 | 17567 | { |
df25ebbd | 17568 | case DW_AT_location: |
cd6c91b4 | 17569 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17570 | { |
8d749320 | 17571 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17572 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17573 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17574 | prop->data.baton = baton; | |
17575 | prop->kind = PROP_LOCLIST; | |
17576 | gdb_assert (prop->data.baton != NULL); | |
17577 | } | |
4fc6c0d5 | 17578 | else if (target_attr->form_is_block ()) |
df25ebbd | 17579 | { |
8d749320 | 17580 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17581 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 17582 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17583 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
17584 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
17585 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17586 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17587 | prop->data.baton = baton; |
17588 | prop->kind = PROP_LOCEXPR; | |
17589 | gdb_assert (prop->data.baton != NULL); | |
17590 | } | |
17591 | else | |
17592 | { | |
17593 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17594 | "dynamic property"); | |
17595 | return 0; | |
17596 | } | |
17597 | break; | |
17598 | case DW_AT_data_member_location: | |
17599 | { | |
17600 | LONGEST offset; | |
17601 | ||
17602 | if (!handle_data_member_location (target_die, target_cu, | |
17603 | &offset)) | |
17604 | return 0; | |
17605 | ||
8d749320 | 17606 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17607 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17608 | target_cu); |
df25ebbd JB |
17609 | baton->offset_info.offset = offset; |
17610 | baton->offset_info.type = die_type (target_die, target_cu); | |
17611 | prop->data.baton = baton; | |
17612 | prop->kind = PROP_ADDR_OFFSET; | |
17613 | break; | |
17614 | } | |
80180f79 SA |
17615 | } |
17616 | } | |
cd6c91b4 | 17617 | else if (attr->form_is_constant ()) |
80180f79 | 17618 | { |
0826b30a | 17619 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17620 | prop->kind = PROP_CONST; |
17621 | } | |
17622 | else | |
17623 | { | |
17624 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17625 | dwarf2_name (die, cu)); | |
17626 | return 0; | |
17627 | } | |
17628 | ||
17629 | return 1; | |
17630 | } | |
17631 | ||
09ba997f | 17632 | /* See read.h. */ |
9a49df9d | 17633 | |
09ba997f | 17634 | struct type * |
293e7e51 | 17635 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 17636 | { |
9a49df9d AB |
17637 | struct type *int_type; |
17638 | ||
17639 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17640 | #define TRY_TYPE(F) \ |
17641 | int_type = (unsigned_p \ | |
17642 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17643 | : objfile_type (objfile)->builtin_ ## F); \ | |
17644 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17645 | return int_type |
17646 | ||
17647 | TRY_TYPE (char); | |
17648 | TRY_TYPE (short); | |
17649 | TRY_TYPE (int); | |
17650 | TRY_TYPE (long); | |
17651 | TRY_TYPE (long_long); | |
17652 | ||
17653 | #undef TRY_TYPE | |
17654 | ||
17655 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17656 | } | |
17657 | ||
09ba997f | 17658 | /* See read.h. */ |
11a8b164 | 17659 | |
09ba997f | 17660 | struct type * |
293e7e51 | 17661 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 17662 | { |
293e7e51 SM |
17663 | int addr_size = this->per_cu->addr_size (); |
17664 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17665 | } |
17666 | ||
b86352cf AB |
17667 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17668 | present (which is valid) then compute the default type based on the | |
17669 | compilation units address size. */ | |
17670 | ||
17671 | static struct type * | |
17672 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17673 | { | |
17674 | struct type *index_type = die_type (die, cu); | |
17675 | ||
17676 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17677 | without specifying a base type. | |
17678 | In that case, the base type must be set to the type of | |
17679 | the lower bound, upper bound or count, in that order, if any of these | |
17680 | three attributes references an object that has a type. | |
17681 | If no base type is found, the Dwarf-2 specifications say that | |
17682 | a signed integer type of size equal to the size of an address should | |
17683 | be used. | |
17684 | For the following C code: `extern char gdb_int [];' | |
17685 | GCC produces an empty range DIE. | |
17686 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17687 | high bound or count are not yet handled by this code. */ | |
78134374 | 17688 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 17689 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
17690 | |
17691 | return index_type; | |
17692 | } | |
17693 | ||
a02abb62 JB |
17694 | /* Read the given DW_AT_subrange DIE. */ |
17695 | ||
f792889a | 17696 | static struct type * |
a02abb62 JB |
17697 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17698 | { | |
4c9ad8c2 | 17699 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17700 | struct type *range_type; |
17701 | struct attribute *attr; | |
729efb13 | 17702 | struct dynamic_prop low, high; |
4fae6e18 | 17703 | int low_default_is_valid; |
c451ebe5 | 17704 | int high_bound_is_count = 0; |
15d034d0 | 17705 | const char *name; |
d359392f | 17706 | ULONGEST negative_mask; |
e77813c8 | 17707 | |
b86352cf AB |
17708 | orig_base_type = read_subrange_index_type (die, cu); |
17709 | ||
4c9ad8c2 TT |
17710 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17711 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17712 | creating the range type, but we use the result of check_typedef | |
17713 | when examining properties of the type. */ | |
17714 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17715 | |
7e314c57 JK |
17716 | /* The die_type call above may have already set the type for this DIE. */ |
17717 | range_type = get_die_type (die, cu); | |
17718 | if (range_type) | |
17719 | return range_type; | |
17720 | ||
729efb13 SA |
17721 | low.kind = PROP_CONST; |
17722 | high.kind = PROP_CONST; | |
17723 | high.data.const_val = 0; | |
17724 | ||
4fae6e18 JK |
17725 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17726 | omitting DW_AT_lower_bound. */ | |
17727 | switch (cu->language) | |
6e70227d | 17728 | { |
4fae6e18 JK |
17729 | case language_c: |
17730 | case language_cplus: | |
729efb13 | 17731 | low.data.const_val = 0; |
4fae6e18 JK |
17732 | low_default_is_valid = 1; |
17733 | break; | |
17734 | case language_fortran: | |
729efb13 | 17735 | low.data.const_val = 1; |
4fae6e18 JK |
17736 | low_default_is_valid = 1; |
17737 | break; | |
17738 | case language_d: | |
4fae6e18 | 17739 | case language_objc: |
c44af4eb | 17740 | case language_rust: |
729efb13 | 17741 | low.data.const_val = 0; |
4fae6e18 JK |
17742 | low_default_is_valid = (cu->header.version >= 4); |
17743 | break; | |
17744 | case language_ada: | |
17745 | case language_m2: | |
17746 | case language_pascal: | |
729efb13 | 17747 | low.data.const_val = 1; |
4fae6e18 JK |
17748 | low_default_is_valid = (cu->header.version >= 4); |
17749 | break; | |
17750 | default: | |
729efb13 | 17751 | low.data.const_val = 0; |
4fae6e18 JK |
17752 | low_default_is_valid = 0; |
17753 | break; | |
a02abb62 JB |
17754 | } |
17755 | ||
e142c38c | 17756 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17757 | if (attr != nullptr) |
9a49df9d | 17758 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17759 | else if (!low_default_is_valid) |
b98664d3 | 17760 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17761 | "- DIE at %s [in module %s]"), |
17762 | sect_offset_str (die->sect_off), | |
5e22e966 | 17763 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 17764 | |
506f5c41 TV |
17765 | struct attribute *attr_ub, *attr_count; |
17766 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17767 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17768 | { |
506f5c41 | 17769 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17770 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17771 | { |
c451ebe5 SA |
17772 | /* If bounds are constant do the final calculation here. */ |
17773 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17774 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17775 | else | |
17776 | high_bound_is_count = 1; | |
c2ff108b | 17777 | } |
506f5c41 TV |
17778 | else |
17779 | { | |
17780 | if (attr_ub != NULL) | |
17781 | complaint (_("Unresolved DW_AT_upper_bound " | |
17782 | "- DIE at %s [in module %s]"), | |
17783 | sect_offset_str (die->sect_off), | |
5e22e966 | 17784 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
17785 | if (attr_count != NULL) |
17786 | complaint (_("Unresolved DW_AT_count " | |
17787 | "- DIE at %s [in module %s]"), | |
17788 | sect_offset_str (die->sect_off), | |
5e22e966 | 17789 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 17790 | } |
e77813c8 | 17791 | } |
a02abb62 | 17792 | |
4e962e74 TT |
17793 | LONGEST bias = 0; |
17794 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17795 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17796 | bias = bias_attr->constant_value (0); |
4e962e74 | 17797 | |
dbb9c2b1 JB |
17798 | /* Normally, the DWARF producers are expected to use a signed |
17799 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17800 | But this is unfortunately not always the case, as witnessed | |
17801 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17802 | is used instead. To work around that ambiguity, we treat | |
17803 | the bounds as signed, and thus sign-extend their values, when | |
17804 | the base type is signed. */ | |
6e70227d | 17805 | negative_mask = |
d359392f | 17806 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17807 | if (low.kind == PROP_CONST |
17808 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17809 | low.data.const_val |= negative_mask; | |
17810 | if (high.kind == PROP_CONST | |
17811 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17812 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17813 | |
5bbd8269 AB |
17814 | /* Check for bit and byte strides. */ |
17815 | struct dynamic_prop byte_stride_prop; | |
17816 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17817 | if (attr_byte_stride != nullptr) | |
17818 | { | |
293e7e51 | 17819 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17820 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17821 | prop_type); | |
17822 | } | |
17823 | ||
17824 | struct dynamic_prop bit_stride_prop; | |
17825 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17826 | if (attr_bit_stride != nullptr) | |
17827 | { | |
17828 | /* It only makes sense to have either a bit or byte stride. */ | |
17829 | if (attr_byte_stride != nullptr) | |
17830 | { | |
17831 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17832 | "- DIE at %s [in module %s]"), | |
17833 | sect_offset_str (die->sect_off), | |
5e22e966 | 17834 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
17835 | attr_bit_stride = nullptr; |
17836 | } | |
17837 | else | |
17838 | { | |
293e7e51 | 17839 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
17840 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17841 | prop_type); | |
17842 | } | |
17843 | } | |
17844 | ||
17845 | if (attr_byte_stride != nullptr | |
17846 | || attr_bit_stride != nullptr) | |
17847 | { | |
17848 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17849 | struct dynamic_prop *stride | |
17850 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17851 | ||
17852 | range_type | |
17853 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17854 | &high, bias, stride, byte_stride_p); | |
17855 | } | |
17856 | else | |
17857 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17858 | |
c451ebe5 SA |
17859 | if (high_bound_is_count) |
17860 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17861 | ||
c2ff108b JK |
17862 | /* Ada expects an empty array on no boundary attributes. */ |
17863 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17864 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17865 | |
39cbfefa DJ |
17866 | name = dwarf2_name (die, cu); |
17867 | if (name) | |
d0e39ea2 | 17868 | range_type->set_name (name); |
6e70227d | 17869 | |
e142c38c | 17870 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17871 | if (attr != nullptr) |
a02abb62 JB |
17872 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17873 | ||
2b4424c3 TT |
17874 | maybe_set_alignment (cu, die, range_type); |
17875 | ||
7e314c57 JK |
17876 | set_die_type (die, range_type, cu); |
17877 | ||
17878 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17879 | set_descriptive_type (range_type, die, cu); |
17880 | ||
7e314c57 | 17881 | return range_type; |
a02abb62 | 17882 | } |
6e70227d | 17883 | |
f792889a | 17884 | static struct type * |
81a17f79 JB |
17885 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17886 | { | |
17887 | struct type *type; | |
81a17f79 | 17888 | |
5e22e966 | 17889 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 17890 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 17891 | |
74a2f8ff | 17892 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17893 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17894 | such a type, we treat it as a stub, and try to resolve it later on, |
17895 | when needed. */ | |
17896 | if (cu->language == language_ada) | |
17897 | TYPE_STUB (type) = 1; | |
17898 | ||
f792889a | 17899 | return set_die_type (die, type, cu); |
81a17f79 | 17900 | } |
a02abb62 | 17901 | |
639d11d3 DC |
17902 | /* Read a single die and all its descendents. Set the die's sibling |
17903 | field to NULL; set other fields in the die correctly, and set all | |
17904 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17905 | location of the info_ptr after reading all of those dies. PARENT | |
17906 | is the parent of the die in question. */ | |
17907 | ||
17908 | static struct die_info * | |
dee91e82 | 17909 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17910 | const gdb_byte *info_ptr, |
17911 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17912 | struct die_info *parent) |
639d11d3 DC |
17913 | { |
17914 | struct die_info *die; | |
d521ce57 | 17915 | const gdb_byte *cur_ptr; |
639d11d3 | 17916 | |
3e225074 | 17917 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17918 | if (die == NULL) |
17919 | { | |
17920 | *new_info_ptr = cur_ptr; | |
17921 | return NULL; | |
17922 | } | |
93311388 | 17923 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17924 | |
3e225074 | 17925 | if (die->has_children) |
bf6af496 | 17926 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17927 | else |
17928 | { | |
17929 | die->child = NULL; | |
17930 | *new_info_ptr = cur_ptr; | |
17931 | } | |
17932 | ||
17933 | die->sibling = NULL; | |
17934 | die->parent = parent; | |
17935 | return die; | |
17936 | } | |
17937 | ||
17938 | /* Read a die, all of its descendents, and all of its siblings; set | |
17939 | all of the fields of all of the dies correctly. Arguments are as | |
17940 | in read_die_and_children. */ | |
17941 | ||
17942 | static struct die_info * | |
bf6af496 | 17943 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17944 | const gdb_byte *info_ptr, |
17945 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17946 | struct die_info *parent) |
639d11d3 DC |
17947 | { |
17948 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17949 | const gdb_byte *cur_ptr; |
639d11d3 | 17950 | |
c906108c | 17951 | cur_ptr = info_ptr; |
639d11d3 DC |
17952 | first_die = last_sibling = NULL; |
17953 | ||
17954 | while (1) | |
c906108c | 17955 | { |
639d11d3 | 17956 | struct die_info *die |
dee91e82 | 17957 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17958 | |
1d325ec1 | 17959 | if (die == NULL) |
c906108c | 17960 | { |
639d11d3 DC |
17961 | *new_info_ptr = cur_ptr; |
17962 | return first_die; | |
c906108c | 17963 | } |
1d325ec1 DJ |
17964 | |
17965 | if (!first_die) | |
17966 | first_die = die; | |
c906108c | 17967 | else |
1d325ec1 DJ |
17968 | last_sibling->sibling = die; |
17969 | ||
17970 | last_sibling = die; | |
c906108c | 17971 | } |
c906108c SS |
17972 | } |
17973 | ||
bf6af496 DE |
17974 | /* Read a die, all of its descendents, and all of its siblings; set |
17975 | all of the fields of all of the dies correctly. Arguments are as | |
17976 | in read_die_and_children. | |
17977 | This the main entry point for reading a DIE and all its children. */ | |
17978 | ||
17979 | static struct die_info * | |
17980 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17981 | const gdb_byte *info_ptr, |
17982 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17983 | struct die_info *parent) |
17984 | { | |
17985 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17986 | new_info_ptr, parent); | |
17987 | ||
b4f54984 | 17988 | if (dwarf_die_debug) |
bf6af496 DE |
17989 | { |
17990 | fprintf_unfiltered (gdb_stdlog, | |
17991 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17992 | reader->die_section->get_name (), |
bf6af496 DE |
17993 | (unsigned) (info_ptr - reader->die_section->buffer), |
17994 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17995 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17996 | } |
17997 | ||
17998 | return die; | |
17999 | } | |
18000 | ||
3019eac3 DE |
18001 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18002 | attributes. | |
18003 | The caller is responsible for filling in the extra attributes | |
18004 | and updating (*DIEP)->num_attrs. | |
18005 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18006 | except for its child, sibling, and parent fields. */ |
93311388 | 18007 | |
d521ce57 | 18008 | static const gdb_byte * |
3019eac3 | 18009 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18010 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18011 | int num_extra_attrs) |
93311388 | 18012 | { |
b64f50a1 | 18013 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18014 | struct abbrev_info *abbrev; |
18015 | struct die_info *die; | |
18016 | struct dwarf2_cu *cu = reader->cu; | |
18017 | bfd *abfd = reader->abfd; | |
18018 | ||
9c541725 | 18019 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18020 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18021 | info_ptr += bytes_read; | |
18022 | if (!abbrev_number) | |
18023 | { | |
18024 | *diep = NULL; | |
93311388 DE |
18025 | return info_ptr; |
18026 | } | |
18027 | ||
685af9cd | 18028 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18029 | if (!abbrev) |
348e048f DE |
18030 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18031 | abbrev_number, | |
18032 | bfd_get_filename (abfd)); | |
18033 | ||
3019eac3 | 18034 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18035 | die->sect_off = sect_off; |
93311388 DE |
18036 | die->tag = abbrev->tag; |
18037 | die->abbrev = abbrev_number; | |
3e225074 | 18038 | die->has_children = abbrev->has_children; |
93311388 | 18039 | |
3019eac3 DE |
18040 | /* Make the result usable. |
18041 | The caller needs to update num_attrs after adding the extra | |
18042 | attributes. */ | |
93311388 DE |
18043 | die->num_attrs = abbrev->num_attrs; |
18044 | ||
18a8505e | 18045 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18046 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18047 | { |
18048 | bool need_reprocess; | |
18049 | info_ptr = | |
18050 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18051 | info_ptr, &need_reprocess); | |
18052 | if (need_reprocess) | |
18053 | indexes_that_need_reprocess.push_back (i); | |
18054 | } | |
18055 | ||
052c8bb8 | 18056 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18057 | if (attr != nullptr) |
18058 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18059 | |
41144253 | 18060 | attr = die->attr (DW_AT_loclists_base); |
18061 | if (attr != nullptr) | |
18062 | cu->loclist_base = DW_UNSND (attr); | |
18063 | ||
a39fdb41 | 18064 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18065 | if (maybe_addr_base.has_value ()) |
18066 | cu->addr_base = *maybe_addr_base; | |
18067 | for (int index : indexes_that_need_reprocess) | |
18068 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18069 | *diep = die; |
93311388 DE |
18070 | return info_ptr; |
18071 | } | |
18072 | ||
3019eac3 DE |
18073 | /* Read a die and all its attributes. |
18074 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18075 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18076 | |
d521ce57 | 18077 | static const gdb_byte * |
3019eac3 | 18078 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18079 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18080 | { |
d521ce57 | 18081 | const gdb_byte *result; |
bf6af496 | 18082 | |
3e225074 | 18083 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18084 | |
b4f54984 | 18085 | if (dwarf_die_debug) |
bf6af496 DE |
18086 | { |
18087 | fprintf_unfiltered (gdb_stdlog, | |
18088 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18089 | reader->die_section->get_name (), |
bf6af496 DE |
18090 | (unsigned) (info_ptr - reader->die_section->buffer), |
18091 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18092 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18093 | } |
18094 | ||
18095 | return result; | |
3019eac3 | 18096 | } |
433df2d4 | 18097 | \f |
c906108c | 18098 | |
72bf9492 DJ |
18099 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18100 | symbol for. */ | |
18101 | ||
18102 | static int | |
18103 | is_type_tag_for_partial (int tag) | |
18104 | { | |
18105 | switch (tag) | |
18106 | { | |
18107 | #if 0 | |
18108 | /* Some types that would be reasonable to generate partial symbols for, | |
18109 | that we don't at present. */ | |
18110 | case DW_TAG_array_type: | |
18111 | case DW_TAG_file_type: | |
18112 | case DW_TAG_ptr_to_member_type: | |
18113 | case DW_TAG_set_type: | |
18114 | case DW_TAG_string_type: | |
18115 | case DW_TAG_subroutine_type: | |
18116 | #endif | |
18117 | case DW_TAG_base_type: | |
18118 | case DW_TAG_class_type: | |
680b30c7 | 18119 | case DW_TAG_interface_type: |
72bf9492 DJ |
18120 | case DW_TAG_enumeration_type: |
18121 | case DW_TAG_structure_type: | |
18122 | case DW_TAG_subrange_type: | |
18123 | case DW_TAG_typedef: | |
18124 | case DW_TAG_union_type: | |
18125 | return 1; | |
18126 | default: | |
18127 | return 0; | |
18128 | } | |
18129 | } | |
18130 | ||
18131 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18132 | ||
18133 | static struct partial_die_info * | |
dee91e82 | 18134 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18135 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18136 | { |
dee91e82 | 18137 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18138 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18139 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18140 | unsigned int bytes_read; |
5afb4e99 | 18141 | unsigned int load_all = 0; |
72bf9492 DJ |
18142 | int nesting_level = 1; |
18143 | ||
18144 | parent_die = NULL; | |
18145 | last_die = NULL; | |
18146 | ||
7adf1e79 DE |
18147 | gdb_assert (cu->per_cu != NULL); |
18148 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18149 | load_all = 1; |
18150 | ||
72bf9492 DJ |
18151 | cu->partial_dies |
18152 | = htab_create_alloc_ex (cu->header.length / 12, | |
18153 | partial_die_hash, | |
18154 | partial_die_eq, | |
18155 | NULL, | |
18156 | &cu->comp_unit_obstack, | |
18157 | hashtab_obstack_allocate, | |
18158 | dummy_obstack_deallocate); | |
18159 | ||
72bf9492 DJ |
18160 | while (1) |
18161 | { | |
685af9cd | 18162 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18163 | |
18164 | /* A NULL abbrev means the end of a series of children. */ | |
18165 | if (abbrev == NULL) | |
18166 | { | |
18167 | if (--nesting_level == 0) | |
cd9983dd YQ |
18168 | return first_die; |
18169 | ||
72bf9492 DJ |
18170 | info_ptr += bytes_read; |
18171 | last_die = parent_die; | |
18172 | parent_die = parent_die->die_parent; | |
18173 | continue; | |
18174 | } | |
18175 | ||
98bfdba5 PA |
18176 | /* Check for template arguments. We never save these; if |
18177 | they're seen, we just mark the parent, and go on our way. */ | |
18178 | if (parent_die != NULL | |
18179 | && cu->language == language_cplus | |
18180 | && (abbrev->tag == DW_TAG_template_type_param | |
18181 | || abbrev->tag == DW_TAG_template_value_param)) | |
18182 | { | |
18183 | parent_die->has_template_arguments = 1; | |
18184 | ||
18185 | if (!load_all) | |
18186 | { | |
18187 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18188 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18189 | continue; |
18190 | } | |
18191 | } | |
18192 | ||
0d99eb77 | 18193 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18194 | Skip their other children. */ |
18195 | if (!load_all | |
18196 | && cu->language == language_cplus | |
18197 | && parent_die != NULL | |
18198 | && parent_die->tag == DW_TAG_subprogram) | |
18199 | { | |
dee91e82 | 18200 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18201 | continue; |
18202 | } | |
18203 | ||
5afb4e99 DJ |
18204 | /* Check whether this DIE is interesting enough to save. Normally |
18205 | we would not be interested in members here, but there may be | |
18206 | later variables referencing them via DW_AT_specification (for | |
18207 | static members). */ | |
18208 | if (!load_all | |
18209 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18210 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18211 | && abbrev->tag != DW_TAG_enumerator |
18212 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18213 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18214 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18215 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18216 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18217 | && abbrev->tag != DW_TAG_module |
95554aad | 18218 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18219 | && abbrev->tag != DW_TAG_imported_unit |
18220 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18221 | { |
18222 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18223 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18224 | continue; |
18225 | } | |
18226 | ||
6f06d47b YQ |
18227 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18228 | abbrev); | |
cd9983dd | 18229 | |
48fbe735 | 18230 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18231 | |
18232 | /* This two-pass algorithm for processing partial symbols has a | |
18233 | high cost in cache pressure. Thus, handle some simple cases | |
18234 | here which cover the majority of C partial symbols. DIEs | |
18235 | which neither have specification tags in them, nor could have | |
18236 | specification tags elsewhere pointing at them, can simply be | |
18237 | processed and discarded. | |
18238 | ||
18239 | This segment is also optional; scan_partial_symbols and | |
18240 | add_partial_symbol will handle these DIEs if we chain | |
18241 | them in normally. When compilers which do not emit large | |
18242 | quantities of duplicate debug information are more common, | |
18243 | this code can probably be removed. */ | |
18244 | ||
18245 | /* Any complete simple types at the top level (pretty much all | |
18246 | of them, for a language without namespaces), can be processed | |
18247 | directly. */ | |
18248 | if (parent_die == NULL | |
cd9983dd YQ |
18249 | && pdi.has_specification == 0 |
18250 | && pdi.is_declaration == 0 | |
18251 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18252 | || pdi.tag == DW_TAG_base_type | |
18253 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18254 | { |
cd9983dd | 18255 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18256 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18257 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18258 | psymbol_placement::STATIC, |
1762568f | 18259 | 0, cu->language, objfile); |
cd9983dd | 18260 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18261 | continue; |
18262 | } | |
18263 | ||
d8228535 JK |
18264 | /* The exception for DW_TAG_typedef with has_children above is |
18265 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18266 | type_name_or_error will error on such types later. |
d8228535 JK |
18267 | |
18268 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18269 | it could not find the child DIEs referenced later, this is checked | |
18270 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18271 | ||
cd9983dd | 18272 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18273 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18274 | "- DIE at %s [in module %s]"), |
cd9983dd | 18275 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18276 | |
72bf9492 DJ |
18277 | /* If we're at the second level, and we're an enumerator, and |
18278 | our parent has no specification (meaning possibly lives in a | |
18279 | namespace elsewhere), then we can add the partial symbol now | |
18280 | instead of queueing it. */ | |
cd9983dd | 18281 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18282 | && parent_die != NULL |
18283 | && parent_die->die_parent == NULL | |
18284 | && parent_die->tag == DW_TAG_enumeration_type | |
18285 | && parent_die->has_specification == 0) | |
18286 | { | |
cd9983dd | 18287 | if (pdi.name == NULL) |
b98664d3 | 18288 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18289 | else if (building_psymtab) |
31edb802 | 18290 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18291 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18292 | cu->language == language_cplus |
75aedd27 TT |
18293 | ? psymbol_placement::GLOBAL |
18294 | : psymbol_placement::STATIC, | |
1762568f | 18295 | 0, cu->language, objfile); |
72bf9492 | 18296 | |
cd9983dd | 18297 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18298 | continue; |
18299 | } | |
18300 | ||
cd9983dd | 18301 | struct partial_die_info *part_die |
6f06d47b | 18302 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18303 | |
72bf9492 DJ |
18304 | /* We'll save this DIE so link it in. */ |
18305 | part_die->die_parent = parent_die; | |
18306 | part_die->die_sibling = NULL; | |
18307 | part_die->die_child = NULL; | |
18308 | ||
18309 | if (last_die && last_die == parent_die) | |
18310 | last_die->die_child = part_die; | |
18311 | else if (last_die) | |
18312 | last_die->die_sibling = part_die; | |
18313 | ||
18314 | last_die = part_die; | |
18315 | ||
18316 | if (first_die == NULL) | |
18317 | first_die = part_die; | |
18318 | ||
18319 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18320 | find interesting need to be in the hash table, because we | |
18321 | also have the parent/sibling/child chains; only those that we | |
18322 | might refer to by offset later during partial symbol reading. | |
18323 | ||
18324 | For now this means things that might have be the target of a | |
18325 | DW_AT_specification, DW_AT_abstract_origin, or | |
18326 | DW_AT_extension. DW_AT_extension will refer only to | |
18327 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18328 | many things under the function DIE, but we do not recurse | |
18329 | into function DIEs during partial symbol reading) and | |
18330 | possibly variables as well; DW_AT_specification refers to | |
18331 | declarations. Declarations ought to have the DW_AT_declaration | |
18332 | flag. It happens that GCC forgets to put it in sometimes, but | |
18333 | only for functions, not for types. | |
18334 | ||
18335 | Adding more things than necessary to the hash table is harmless | |
18336 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18337 | wasted time in find_partial_die, when we reread the compilation |
18338 | unit with load_all_dies set. */ | |
72bf9492 | 18339 | |
5afb4e99 | 18340 | if (load_all |
72929c62 | 18341 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18342 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18343 | || abbrev->tag == DW_TAG_variable |
18344 | || abbrev->tag == DW_TAG_namespace | |
18345 | || part_die->is_declaration) | |
18346 | { | |
18347 | void **slot; | |
18348 | ||
18349 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18350 | to_underlying (part_die->sect_off), |
18351 | INSERT); | |
72bf9492 DJ |
18352 | *slot = part_die; |
18353 | } | |
18354 | ||
72bf9492 | 18355 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18356 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18357 | languages we have to, so that we can get at method physnames |
18358 | to infer fully qualified class names, for DW_AT_specification, | |
18359 | and for C++ template arguments. For C++, we also look one level | |
18360 | inside functions to find template arguments (if the name of the | |
18361 | function does not already contain the template arguments). | |
bc30ff58 | 18362 | |
0a4b0913 AB |
18363 | For Ada and Fortran, we need to scan the children of subprograms |
18364 | and lexical blocks as well because these languages allow the | |
18365 | definition of nested entities that could be interesting for the | |
18366 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18367 | if (last_die->has_children |
5afb4e99 DJ |
18368 | && (load_all |
18369 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18370 | || last_die->tag == DW_TAG_module |
72bf9492 | 18371 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18372 | || (cu->language == language_cplus |
18373 | && last_die->tag == DW_TAG_subprogram | |
18374 | && (last_die->name == NULL | |
18375 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18376 | || (cu->language != language_c |
18377 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18378 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18379 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18380 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18381 | || ((cu->language == language_ada |
18382 | || cu->language == language_fortran) | |
bc30ff58 JB |
18383 | && (last_die->tag == DW_TAG_subprogram |
18384 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18385 | { |
18386 | nesting_level++; | |
18387 | parent_die = last_die; | |
18388 | continue; | |
18389 | } | |
18390 | ||
18391 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18392 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18393 | |
18394 | /* Back to the top, do it again. */ | |
18395 | } | |
18396 | } | |
18397 | ||
6f06d47b YQ |
18398 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18399 | struct abbrev_info *abbrev) | |
18400 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18401 | { | |
18402 | } | |
18403 | ||
35cc7ed7 YQ |
18404 | /* Read a minimal amount of information into the minimal die structure. |
18405 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18406 | |
48fbe735 YQ |
18407 | const gdb_byte * |
18408 | partial_die_info::read (const struct die_reader_specs *reader, | |
18409 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18410 | { |
dee91e82 | 18411 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18412 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
fa238c03 | 18413 | unsigned int i; |
c5aa993b | 18414 | int has_low_pc_attr = 0; |
c906108c | 18415 | int has_high_pc_attr = 0; |
91da1414 | 18416 | int high_pc_relative = 0; |
c906108c | 18417 | |
fd0a254f | 18418 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18419 | { |
e7da7f8f | 18420 | attribute attr; |
18a8505e | 18421 | bool need_reprocess; |
e7da7f8f | 18422 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18423 | info_ptr, &need_reprocess); |
18424 | /* String and address offsets that need to do the reprocessing have | |
18425 | already been read at this point, so there is no need to wait until | |
18426 | the loop terminates to do the reprocessing. */ | |
18427 | if (need_reprocess) | |
e7da7f8f | 18428 | read_attribute_reprocess (reader, &attr); |
c906108c | 18429 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18430 | partial symbol table. */ |
c906108c SS |
18431 | switch (attr.name) |
18432 | { | |
18433 | case DW_AT_name: | |
48fbe735 | 18434 | switch (tag) |
71c25dea TT |
18435 | { |
18436 | case DW_TAG_compile_unit: | |
95554aad | 18437 | case DW_TAG_partial_unit: |
348e048f | 18438 | case DW_TAG_type_unit: |
71c25dea TT |
18439 | /* Compilation units have a DW_AT_name that is a filename, not |
18440 | a source language identifier. */ | |
18441 | case DW_TAG_enumeration_type: | |
18442 | case DW_TAG_enumerator: | |
18443 | /* These tags always have simple identifiers already; no need | |
18444 | to canonicalize them. */ | |
48fbe735 | 18445 | name = DW_STRING (&attr); |
71c25dea TT |
18446 | break; |
18447 | default: | |
48fbe735 YQ |
18448 | { |
18449 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18450 | ||
18451 | name | |
be1e3d3e | 18452 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 18453 | } |
71c25dea TT |
18454 | break; |
18455 | } | |
c906108c | 18456 | break; |
31ef98ae | 18457 | case DW_AT_linkage_name: |
c906108c | 18458 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18459 | /* Note that both forms of linkage name might appear. We |
18460 | assume they will be the same, and we only store the last | |
18461 | one we see. */ | |
e61108c9 | 18462 | linkage_name = attr.value_as_string (); |
787de330 TT |
18463 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18464 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18465 | if (cu->language == language_rust && linkage_name != NULL | |
18466 | && strchr (linkage_name, '{') != NULL) | |
18467 | linkage_name = NULL; | |
c906108c SS |
18468 | break; |
18469 | case DW_AT_low_pc: | |
18470 | has_low_pc_attr = 1; | |
cd6c91b4 | 18471 | lowpc = attr.value_as_address (); |
c906108c SS |
18472 | break; |
18473 | case DW_AT_high_pc: | |
18474 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18475 | highpc = attr.value_as_address (); |
18476 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18477 | high_pc_relative = 1; |
c906108c SS |
18478 | break; |
18479 | case DW_AT_location: | |
0963b4bd | 18480 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18481 | if (attr.form_is_block ()) |
8e19ed76 | 18482 | { |
48fbe735 | 18483 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18484 | } |
cd6c91b4 | 18485 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18486 | { |
4d3c2250 | 18487 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18488 | } |
18489 | else | |
18490 | { | |
4d3c2250 KB |
18491 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18492 | "partial symbol information"); | |
8e19ed76 | 18493 | } |
c906108c | 18494 | break; |
c906108c | 18495 | case DW_AT_external: |
48fbe735 | 18496 | is_external = DW_UNSND (&attr); |
c906108c SS |
18497 | break; |
18498 | case DW_AT_declaration: | |
48fbe735 | 18499 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18500 | break; |
18501 | case DW_AT_type: | |
48fbe735 | 18502 | has_type = 1; |
c906108c SS |
18503 | break; |
18504 | case DW_AT_abstract_origin: | |
18505 | case DW_AT_specification: | |
72bf9492 | 18506 | case DW_AT_extension: |
48fbe735 | 18507 | has_specification = 1; |
0826b30a | 18508 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18509 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18510 | || cu->per_cu->is_dwz); |
c906108c SS |
18511 | break; |
18512 | case DW_AT_sibling: | |
18513 | /* Ignore absolute siblings, they might point outside of | |
18514 | the current compile unit. */ | |
18515 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18516 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18517 | else |
b9502d3f | 18518 | { |
48fbe735 | 18519 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18520 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18521 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18522 | |
18523 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18524 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18525 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18526 | reader->die_section->overflow_complaint (); |
b9502d3f | 18527 | else |
48fbe735 | 18528 | sibling = sibling_ptr; |
b9502d3f | 18529 | } |
c906108c | 18530 | break; |
fa4028e9 | 18531 | case DW_AT_byte_size: |
48fbe735 | 18532 | has_byte_size = 1; |
fa4028e9 | 18533 | break; |
ff908ebf | 18534 | case DW_AT_const_value: |
48fbe735 | 18535 | has_const_value = 1; |
ff908ebf | 18536 | break; |
68511cec CES |
18537 | case DW_AT_calling_convention: |
18538 | /* DWARF doesn't provide a way to identify a program's source-level | |
18539 | entry point. DW_AT_calling_convention attributes are only meant | |
18540 | to describe functions' calling conventions. | |
18541 | ||
18542 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18543 | Fortran, and before DWARF 4 DW_CC_program was the only |
18544 | piece of debugging information whose definition refers to | |
18545 | a 'main program' at all, several compilers marked Fortran | |
18546 | main programs with DW_CC_program --- even when those | |
18547 | functions use the standard calling conventions. | |
18548 | ||
18549 | Although DWARF now specifies a way to provide this | |
18550 | information, we support this practice for backward | |
18551 | compatibility. */ | |
68511cec | 18552 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18553 | && cu->language == language_fortran) |
48fbe735 | 18554 | main_subprogram = 1; |
68511cec | 18555 | break; |
481860b3 GB |
18556 | case DW_AT_inline: |
18557 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18558 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18559 | may_be_inlined = 1; |
481860b3 | 18560 | break; |
95554aad TT |
18561 | |
18562 | case DW_AT_import: | |
48fbe735 | 18563 | if (tag == DW_TAG_imported_unit) |
36586728 | 18564 | { |
0826b30a | 18565 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18566 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18567 | || cu->per_cu->is_dwz); |
18568 | } | |
95554aad TT |
18569 | break; |
18570 | ||
0c1b455e | 18571 | case DW_AT_main_subprogram: |
48fbe735 | 18572 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18573 | break; |
18574 | ||
05caa1d2 TT |
18575 | case DW_AT_ranges: |
18576 | { | |
18577 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18578 | but that requires a full DIE, so instead we just | |
18579 | reimplement it. */ | |
18580 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18581 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18582 | + (need_ranges_base | |
18583 | ? cu->ranges_base | |
18584 | : 0)); | |
18585 | ||
18586 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18587 | .debug_ranges section. */ | |
18588 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18589 | nullptr)) | |
18590 | has_pc_info = 1; | |
18591 | } | |
18592 | break; | |
18593 | ||
c906108c SS |
18594 | default: |
18595 | break; | |
18596 | } | |
18597 | } | |
18598 | ||
10d06d82 TT |
18599 | /* For Ada, if both the name and the linkage name appear, we prefer |
18600 | the latter. This lets "catch exception" work better, regardless | |
18601 | of the order in which the name and linkage name were emitted. | |
18602 | Really, though, this is just a workaround for the fact that gdb | |
18603 | doesn't store both the name and the linkage name. */ | |
18604 | if (cu->language == language_ada && linkage_name != nullptr) | |
18605 | name = linkage_name; | |
18606 | ||
91da1414 | 18607 | if (high_pc_relative) |
48fbe735 | 18608 | highpc += lowpc; |
91da1414 | 18609 | |
9373cf26 JK |
18610 | if (has_low_pc_attr && has_high_pc_attr) |
18611 | { | |
18612 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18613 | eliminate duplicate copies of functions and vtables and such. | |
18614 | The linker will arbitrarily choose one and discard the others. | |
18615 | The AT_*_pc values for such functions refer to local labels in | |
18616 | these sections. If the section from that file was discarded, the | |
18617 | labels are not in the output, so the relocs get a value of 0. | |
18618 | If this is a discarded function, mark the pc bounds as invalid, | |
18619 | so that GDB will ignore it. */ | |
5989a64e | 18620 | if (lowpc == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 18621 | { |
48fbe735 | 18622 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18623 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18624 | |
b98664d3 | 18625 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18626 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18627 | paddress (gdbarch, lowpc), |
18628 | sect_offset_str (sect_off), | |
9d8780f0 | 18629 | objfile_name (objfile)); |
9373cf26 JK |
18630 | } |
18631 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18632 | else if (lowpc >= highpc) |
9373cf26 | 18633 | { |
48fbe735 | 18634 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18635 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18636 | |
b98664d3 | 18637 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18638 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18639 | paddress (gdbarch, lowpc), |
18640 | paddress (gdbarch, highpc), | |
18641 | sect_offset_str (sect_off), | |
9c541725 | 18642 | objfile_name (objfile)); |
9373cf26 JK |
18643 | } |
18644 | else | |
48fbe735 | 18645 | has_pc_info = 1; |
9373cf26 | 18646 | } |
85cbf3d3 | 18647 | |
c906108c SS |
18648 | return info_ptr; |
18649 | } | |
18650 | ||
72bf9492 DJ |
18651 | /* Find a cached partial DIE at OFFSET in CU. */ |
18652 | ||
d590ff25 YQ |
18653 | struct partial_die_info * |
18654 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18655 | { |
18656 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18657 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18658 | |
9a3c8263 | 18659 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18660 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18661 | to_underlying (sect_off))); |
72bf9492 | 18662 | |
72bf9492 DJ |
18663 | return lookup_die; |
18664 | } | |
18665 | ||
348e048f DE |
18666 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18667 | except in the case of .debug_types DIEs which do not reference | |
18668 | outside their CU (they do however referencing other types via | |
55f1336d | 18669 | DW_FORM_ref_sig8). */ |
72bf9492 | 18670 | |
122cf0f2 | 18671 | static const struct cu_partial_die_info |
9c541725 | 18672 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18673 | { |
5e22e966 | 18674 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 18675 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 | 18676 | struct partial_die_info *pd = NULL; |
72bf9492 | 18677 | |
36586728 | 18678 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18679 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18680 | { |
d590ff25 | 18681 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18682 | if (pd != NULL) |
fb816e8b | 18683 | return { cu, pd }; |
0d99eb77 DE |
18684 | /* We missed recording what we needed. |
18685 | Load all dies and try again. */ | |
5afb4e99 | 18686 | } |
0d99eb77 DE |
18687 | else |
18688 | { | |
18689 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18690 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18691 | { |
9d8780f0 SM |
18692 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18693 | " external reference to offset %s [in module %s].\n"), | |
18694 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18695 | bfd_get_filename (objfile->obfd)); |
18696 | } | |
7188ed02 SM |
18697 | dwarf2_per_cu_data *per_cu |
18698 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
18699 | dwarf2_per_objfile); | |
72bf9492 | 18700 | |
7188ed02 SM |
18701 | cu = dwarf2_per_objfile->get_cu (per_cu); |
18702 | if (cu == NULL || cu->partial_dies == NULL) | |
18703 | load_partial_comp_unit (per_cu, dwarf2_per_objfile, nullptr); | |
ae038cb0 | 18704 | |
7188ed02 SM |
18705 | cu = dwarf2_per_objfile->get_cu (per_cu); |
18706 | ||
18707 | cu->last_used = 0; | |
18708 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 18709 | } |
5afb4e99 | 18710 | |
dee91e82 DE |
18711 | /* If we didn't find it, and not all dies have been loaded, |
18712 | load them all and try again. */ | |
18713 | ||
7188ed02 | 18714 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 18715 | { |
7188ed02 | 18716 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
18717 | |
18718 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18719 | THIS_CU->cu may already be in use. So we can't just free it and | |
18720 | replace its DIEs with the ones we read in. Instead, we leave those | |
18721 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18722 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18723 | set. */ | |
7188ed02 | 18724 | load_partial_comp_unit (cu->per_cu, dwarf2_per_objfile, cu); |
5afb4e99 | 18725 | |
7188ed02 | 18726 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18727 | } |
18728 | ||
18729 | if (pd == NULL) | |
18730 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18731 | _("could not find partial DIE %s " |
3e43a32a | 18732 | "in cache [from module %s]\n"), |
9d8780f0 | 18733 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 18734 | return { cu, pd }; |
72bf9492 DJ |
18735 | } |
18736 | ||
abc72ce4 DE |
18737 | /* See if we can figure out if the class lives in a namespace. We do |
18738 | this by looking for a member function; its demangled name will | |
18739 | contain namespace info, if there is any. */ | |
18740 | ||
18741 | static void | |
18742 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18743 | struct dwarf2_cu *cu) | |
18744 | { | |
18745 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18746 | what template types look like, because the demangler | |
18747 | frequently doesn't give the same name as the debug info. We | |
18748 | could fix this by only using the demangled name to get the | |
18749 | prefix (but see comment in read_structure_type). */ | |
18750 | ||
18751 | struct partial_die_info *real_pdi; | |
18752 | struct partial_die_info *child_pdi; | |
18753 | ||
18754 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18755 | we should not do this. We'll prepend the parent's fully qualified | |
18756 | name when we create the partial symbol. */ | |
18757 | ||
18758 | real_pdi = struct_pdi; | |
18759 | while (real_pdi->has_specification) | |
fb816e8b | 18760 | { |
122cf0f2 AB |
18761 | auto res = find_partial_die (real_pdi->spec_offset, |
18762 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18763 | real_pdi = res.pdi; |
18764 | cu = res.cu; | |
18765 | } | |
abc72ce4 DE |
18766 | |
18767 | if (real_pdi->die_parent != NULL) | |
18768 | return; | |
18769 | ||
18770 | for (child_pdi = struct_pdi->die_child; | |
18771 | child_pdi != NULL; | |
18772 | child_pdi = child_pdi->die_sibling) | |
18773 | { | |
18774 | if (child_pdi->tag == DW_TAG_subprogram | |
18775 | && child_pdi->linkage_name != NULL) | |
18776 | { | |
43816ebc TT |
18777 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18778 | (language_class_name_from_physname (cu->language_defn, | |
18779 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18780 | if (actual_class_name != NULL) |
18781 | { | |
5e22e966 | 18782 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18783 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18784 | } |
18785 | break; | |
18786 | } | |
18787 | } | |
18788 | } | |
18789 | ||
25c11aca TV |
18790 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18791 | attribute. */ | |
18792 | ||
18793 | static bool | |
18794 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18795 | { | |
18796 | switch (tag) | |
18797 | { | |
18798 | case DW_TAG_constant: | |
18799 | case DW_TAG_enumerator: | |
18800 | case DW_TAG_formal_parameter: | |
18801 | case DW_TAG_template_value_param: | |
18802 | case DW_TAG_variable: | |
18803 | return true; | |
18804 | } | |
18805 | ||
18806 | return false; | |
18807 | } | |
18808 | ||
52356b79 YQ |
18809 | void |
18810 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18811 | { |
abc72ce4 DE |
18812 | /* Once we've fixed up a die, there's no point in doing so again. |
18813 | This also avoids a memory leak if we were to call | |
18814 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18815 | if (fixup_called) |
abc72ce4 DE |
18816 | return; |
18817 | ||
72bf9492 DJ |
18818 | /* If we found a reference attribute and the DIE has no name, try |
18819 | to find a name in the referred to DIE. */ | |
18820 | ||
52356b79 | 18821 | if (name == NULL && has_specification) |
72bf9492 DJ |
18822 | { |
18823 | struct partial_die_info *spec_die; | |
72bf9492 | 18824 | |
122cf0f2 | 18825 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18826 | spec_die = res.pdi; |
18827 | cu = res.cu; | |
72bf9492 | 18828 | |
52356b79 | 18829 | spec_die->fixup (cu); |
72bf9492 DJ |
18830 | |
18831 | if (spec_die->name) | |
18832 | { | |
52356b79 | 18833 | name = spec_die->name; |
72bf9492 DJ |
18834 | |
18835 | /* Copy DW_AT_external attribute if it is set. */ | |
18836 | if (spec_die->is_external) | |
52356b79 | 18837 | is_external = spec_die->is_external; |
72bf9492 DJ |
18838 | } |
18839 | } | |
18840 | ||
25c11aca TV |
18841 | if (!has_const_value && has_specification |
18842 | && can_have_DW_AT_const_value_p (tag)) | |
18843 | { | |
18844 | struct partial_die_info *spec_die; | |
18845 | ||
18846 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18847 | spec_die = res.pdi; | |
18848 | cu = res.cu; | |
18849 | ||
18850 | spec_die->fixup (cu); | |
18851 | ||
18852 | if (spec_die->has_const_value) | |
18853 | { | |
18854 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18855 | has_const_value = spec_die->has_const_value; | |
18856 | } | |
18857 | } | |
18858 | ||
72bf9492 | 18859 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18860 | |
52356b79 YQ |
18861 | if (name == NULL && tag == DW_TAG_namespace) |
18862 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18863 | |
abc72ce4 DE |
18864 | /* If there is no parent die to provide a namespace, and there are |
18865 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18866 | name. */ |
abc72ce4 | 18867 | if (cu->language == language_cplus |
5e22e966 | 18868 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
18869 | && die_parent == NULL |
18870 | && has_children | |
18871 | && (tag == DW_TAG_class_type | |
18872 | || tag == DW_TAG_structure_type | |
18873 | || tag == DW_TAG_union_type)) | |
18874 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18875 | |
53832f31 TT |
18876 | /* GCC might emit a nameless struct or union that has a linkage |
18877 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18878 | if (name == NULL |
18879 | && (tag == DW_TAG_class_type | |
18880 | || tag == DW_TAG_interface_type | |
18881 | || tag == DW_TAG_structure_type | |
18882 | || tag == DW_TAG_union_type) | |
18883 | && linkage_name != NULL) | |
53832f31 | 18884 | { |
43816ebc TT |
18885 | gdb::unique_xmalloc_ptr<char> demangled |
18886 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18887 | if (demangled != nullptr) | |
53832f31 | 18888 | { |
96408a79 SA |
18889 | const char *base; |
18890 | ||
18891 | /* Strip any leading namespaces/classes, keep only the base name. | |
18892 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18893 | base = strrchr (demangled.get (), ':'); |
18894 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18895 | base++; |
18896 | else | |
43816ebc | 18897 | base = demangled.get (); |
96408a79 | 18898 | |
5e22e966 | 18899 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18900 | name = objfile->intern (base); |
53832f31 TT |
18901 | } |
18902 | } | |
18903 | ||
52356b79 | 18904 | fixup_called = 1; |
72bf9492 DJ |
18905 | } |
18906 | ||
41144253 | 18907 | /* Read the .debug_loclists header contents from the given SECTION in the |
18908 | HEADER. */ | |
18909 | static void | |
18910 | read_loclist_header (struct loclist_header *header, | |
18911 | struct dwarf2_section_info *section) | |
18912 | { | |
18913 | unsigned int bytes_read; | |
18914 | bfd *abfd = section->get_bfd_owner (); | |
18915 | const gdb_byte *info_ptr = section->buffer; | |
18916 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
18917 | info_ptr += bytes_read; | |
18918 | header->version = read_2_bytes (abfd, info_ptr); | |
18919 | info_ptr += 2; | |
18920 | header->addr_size = read_1_byte (abfd, info_ptr); | |
18921 | info_ptr += 1; | |
18922 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
18923 | info_ptr += 1; | |
18924 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
18925 | } | |
18926 | ||
18927 | /* Return the DW_AT_loclists_base value for the CU. */ | |
18928 | static ULONGEST | |
18929 | lookup_loclist_base (struct dwarf2_cu *cu) | |
18930 | { | |
18931 | /* For the .dwo unit, the loclist_base points to the first offset following | |
18932 | the header. The header consists of the following entities- | |
18933 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
18934 | bit format) | |
18935 | 2. version (2 bytes) | |
18936 | 3. address size (1 byte) | |
18937 | 4. segment selector size (1 byte) | |
18938 | 5. offset entry count (4 bytes) | |
18939 | These sizes are derived as per the DWARFv5 standard. */ | |
18940 | if (cu->dwo_unit != nullptr) | |
18941 | { | |
18942 | if (cu->header.initial_length_size == 4) | |
18943 | return LOCLIST_HEADER_SIZE32; | |
18944 | return LOCLIST_HEADER_SIZE64; | |
18945 | } | |
18946 | return cu->loclist_base; | |
18947 | } | |
18948 | ||
18949 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
18950 | array of offsets in the .debug_loclists section. */ | |
18951 | static CORE_ADDR | |
18952 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
18953 | { | |
5e22e966 | 18954 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
41144253 | 18955 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
18956 | bfd *abfd = objfile->obfd; | |
18957 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
18958 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
18959 | ||
18960 | section->read (objfile); | |
18961 | if (section->buffer == NULL) | |
18962 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
18963 | "section [in module %s]"), objfile_name (objfile)); | |
18964 | struct loclist_header header; | |
18965 | read_loclist_header (&header, section); | |
18966 | if (loclist_index >= header.offset_entry_count) | |
18967 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18968 | ".debug_loclists offset array [in module %s]"), | |
18969 | objfile_name (objfile)); | |
18970 | if (loclist_base + loclist_index * cu->header.offset_size | |
18971 | >= section->size) | |
18972 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18973 | ".debug_loclists section [in module %s]"), | |
18974 | objfile_name (objfile)); | |
18975 | const gdb_byte *info_ptr | |
18976 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
18977 | ||
18978 | if (cu->header.offset_size == 4) | |
18979 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
18980 | else | |
18981 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
18982 | } | |
18983 | ||
18a8505e AT |
18984 | /* Process the attributes that had to be skipped in the first round. These |
18985 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18986 | They could not have been processed in the first round, because at the time | |
18987 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
18988 | static void |
18989 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
18990 | struct attribute *attr) | |
18a8505e AT |
18991 | { |
18992 | struct dwarf2_cu *cu = reader->cu; | |
18993 | switch (attr->form) | |
18994 | { | |
18995 | case DW_FORM_addrx: | |
18996 | case DW_FORM_GNU_addr_index: | |
18997 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18998 | break; | |
41144253 | 18999 | case DW_FORM_loclistx: |
19000 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19001 | break; | |
18a8505e AT |
19002 | case DW_FORM_strx: |
19003 | case DW_FORM_strx1: | |
19004 | case DW_FORM_strx2: | |
19005 | case DW_FORM_strx3: | |
19006 | case DW_FORM_strx4: | |
19007 | case DW_FORM_GNU_str_index: | |
19008 | { | |
19009 | unsigned int str_index = DW_UNSND (attr); | |
19010 | if (reader->dwo_file != NULL) | |
19011 | { | |
19012 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19013 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19014 | } | |
19015 | else | |
19016 | { | |
19017 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19018 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19019 | } | |
19020 | break; | |
19021 | } | |
19022 | default: | |
19023 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19024 | } | |
19025 | } | |
19026 | ||
a8329558 | 19027 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19028 | |
d521ce57 | 19029 | static const gdb_byte * |
dee91e82 DE |
19030 | read_attribute_value (const struct die_reader_specs *reader, |
19031 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19032 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19033 | bool *need_reprocess) | |
c906108c | 19034 | { |
dee91e82 | 19035 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19036 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 19037 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
dee91e82 | 19038 | bfd *abfd = reader->abfd; |
e7c27a73 | 19039 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19040 | unsigned int bytes_read; |
19041 | struct dwarf_block *blk; | |
18a8505e | 19042 | *need_reprocess = false; |
c906108c | 19043 | |
aead7601 | 19044 | attr->form = (enum dwarf_form) form; |
a8329558 | 19045 | switch (form) |
c906108c | 19046 | { |
c906108c | 19047 | case DW_FORM_ref_addr: |
ae411497 | 19048 | if (cu->header.version == 2) |
c8a7a66f TT |
19049 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19050 | &bytes_read); | |
ae411497 | 19051 | else |
8266302d TT |
19052 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19053 | &bytes_read); | |
ae411497 TT |
19054 | info_ptr += bytes_read; |
19055 | break; | |
36586728 | 19056 | case DW_FORM_GNU_ref_alt: |
8266302d | 19057 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19058 | info_ptr += bytes_read; |
19059 | break; | |
ae411497 | 19060 | case DW_FORM_addr: |
08feed99 TT |
19061 | { |
19062 | struct gdbarch *gdbarch = objfile->arch (); | |
19063 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19064 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19065 | info_ptr += bytes_read; | |
19066 | } | |
c906108c SS |
19067 | break; |
19068 | case DW_FORM_block2: | |
7b5a2f43 | 19069 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19070 | blk->size = read_2_bytes (abfd, info_ptr); |
19071 | info_ptr += 2; | |
19072 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19073 | info_ptr += blk->size; | |
19074 | DW_BLOCK (attr) = blk; | |
19075 | break; | |
19076 | case DW_FORM_block4: | |
7b5a2f43 | 19077 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19078 | blk->size = read_4_bytes (abfd, info_ptr); |
19079 | info_ptr += 4; | |
19080 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19081 | info_ptr += blk->size; | |
19082 | DW_BLOCK (attr) = blk; | |
19083 | break; | |
19084 | case DW_FORM_data2: | |
19085 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19086 | info_ptr += 2; | |
19087 | break; | |
19088 | case DW_FORM_data4: | |
19089 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19090 | info_ptr += 4; | |
19091 | break; | |
19092 | case DW_FORM_data8: | |
19093 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19094 | info_ptr += 8; | |
19095 | break; | |
0224619f JK |
19096 | case DW_FORM_data16: |
19097 | blk = dwarf_alloc_block (cu); | |
19098 | blk->size = 16; | |
19099 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19100 | info_ptr += 16; | |
19101 | DW_BLOCK (attr) = blk; | |
19102 | break; | |
2dc7f7b3 | 19103 | case DW_FORM_sec_offset: |
8266302d | 19104 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19105 | info_ptr += bytes_read; |
19106 | break; | |
41144253 | 19107 | case DW_FORM_loclistx: |
19108 | { | |
19109 | *need_reprocess = true; | |
19110 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19111 | info_ptr += bytes_read; | |
19112 | } | |
19113 | break; | |
c906108c | 19114 | case DW_FORM_string: |
9b1c24c8 | 19115 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19116 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19117 | info_ptr += bytes_read; |
19118 | break; | |
4bdf3d34 | 19119 | case DW_FORM_strp: |
36586728 TT |
19120 | if (!cu->per_cu->is_dwz) |
19121 | { | |
ed2dc618 SM |
19122 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19123 | abfd, info_ptr, cu_header, | |
36586728 TT |
19124 | &bytes_read); |
19125 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19126 | info_ptr += bytes_read; | |
19127 | break; | |
19128 | } | |
19129 | /* FALLTHROUGH */ | |
43988095 JK |
19130 | case DW_FORM_line_strp: |
19131 | if (!cu->per_cu->is_dwz) | |
19132 | { | |
86c0bb4c TT |
19133 | DW_STRING (attr) |
19134 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
19135 | &bytes_read); | |
43988095 JK |
19136 | DW_STRING_IS_CANONICAL (attr) = 0; |
19137 | info_ptr += bytes_read; | |
19138 | break; | |
19139 | } | |
19140 | /* FALLTHROUGH */ | |
36586728 TT |
19141 | case DW_FORM_GNU_strp_alt: |
19142 | { | |
c3699833 | 19143 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
8266302d TT |
19144 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19145 | &bytes_read); | |
36586728 | 19146 | |
0314b390 | 19147 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19148 | DW_STRING_IS_CANONICAL (attr) = 0; |
19149 | info_ptr += bytes_read; | |
19150 | } | |
4bdf3d34 | 19151 | break; |
2dc7f7b3 | 19152 | case DW_FORM_exprloc: |
c906108c | 19153 | case DW_FORM_block: |
7b5a2f43 | 19154 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19155 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19156 | info_ptr += bytes_read; | |
19157 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19158 | info_ptr += blk->size; | |
19159 | DW_BLOCK (attr) = blk; | |
19160 | break; | |
19161 | case DW_FORM_block1: | |
7b5a2f43 | 19162 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19163 | blk->size = read_1_byte (abfd, info_ptr); |
19164 | info_ptr += 1; | |
19165 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19166 | info_ptr += blk->size; | |
19167 | DW_BLOCK (attr) = blk; | |
19168 | break; | |
19169 | case DW_FORM_data1: | |
19170 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19171 | info_ptr += 1; | |
19172 | break; | |
19173 | case DW_FORM_flag: | |
19174 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19175 | info_ptr += 1; | |
19176 | break; | |
2dc7f7b3 TT |
19177 | case DW_FORM_flag_present: |
19178 | DW_UNSND (attr) = 1; | |
19179 | break; | |
c906108c SS |
19180 | case DW_FORM_sdata: |
19181 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19182 | info_ptr += bytes_read; | |
19183 | break; | |
19184 | case DW_FORM_udata: | |
18a8505e | 19185 | case DW_FORM_rnglistx: |
c906108c SS |
19186 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19187 | info_ptr += bytes_read; | |
19188 | break; | |
19189 | case DW_FORM_ref1: | |
9c541725 | 19190 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19191 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19192 | info_ptr += 1; |
19193 | break; | |
19194 | case DW_FORM_ref2: | |
9c541725 | 19195 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19196 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19197 | info_ptr += 2; |
19198 | break; | |
19199 | case DW_FORM_ref4: | |
9c541725 | 19200 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19201 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19202 | info_ptr += 4; |
19203 | break; | |
613e1657 | 19204 | case DW_FORM_ref8: |
9c541725 | 19205 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19206 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19207 | info_ptr += 8; |
19208 | break; | |
55f1336d | 19209 | case DW_FORM_ref_sig8: |
ac9ec31b | 19210 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19211 | info_ptr += 8; |
19212 | break; | |
c906108c | 19213 | case DW_FORM_ref_udata: |
9c541725 | 19214 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19215 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19216 | info_ptr += bytes_read; |
19217 | break; | |
c906108c | 19218 | case DW_FORM_indirect: |
a8329558 KW |
19219 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19220 | info_ptr += bytes_read; | |
43988095 JK |
19221 | if (form == DW_FORM_implicit_const) |
19222 | { | |
19223 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19224 | info_ptr += bytes_read; | |
19225 | } | |
19226 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19227 | info_ptr, need_reprocess); |
43988095 JK |
19228 | break; |
19229 | case DW_FORM_implicit_const: | |
19230 | DW_SND (attr) = implicit_const; | |
a8329558 | 19231 | break; |
336d760d | 19232 | case DW_FORM_addrx: |
3019eac3 | 19233 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19234 | *need_reprocess = true; |
19235 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19236 | info_ptr += bytes_read; |
19237 | break; | |
cf532bd1 | 19238 | case DW_FORM_strx: |
15f18d14 AT |
19239 | case DW_FORM_strx1: |
19240 | case DW_FORM_strx2: | |
19241 | case DW_FORM_strx3: | |
19242 | case DW_FORM_strx4: | |
3019eac3 | 19243 | case DW_FORM_GNU_str_index: |
3019eac3 | 19244 | { |
15f18d14 AT |
19245 | ULONGEST str_index; |
19246 | if (form == DW_FORM_strx1) | |
19247 | { | |
19248 | str_index = read_1_byte (abfd, info_ptr); | |
19249 | info_ptr += 1; | |
19250 | } | |
19251 | else if (form == DW_FORM_strx2) | |
19252 | { | |
19253 | str_index = read_2_bytes (abfd, info_ptr); | |
19254 | info_ptr += 2; | |
19255 | } | |
19256 | else if (form == DW_FORM_strx3) | |
19257 | { | |
19258 | str_index = read_3_bytes (abfd, info_ptr); | |
19259 | info_ptr += 3; | |
19260 | } | |
19261 | else if (form == DW_FORM_strx4) | |
19262 | { | |
19263 | str_index = read_4_bytes (abfd, info_ptr); | |
19264 | info_ptr += 4; | |
19265 | } | |
19266 | else | |
19267 | { | |
19268 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19269 | info_ptr += bytes_read; | |
19270 | } | |
18a8505e AT |
19271 | *need_reprocess = true; |
19272 | DW_UNSND (attr) = str_index; | |
19273 | } | |
3019eac3 | 19274 | break; |
c906108c | 19275 | default: |
8a3fe4f8 | 19276 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19277 | dwarf_form_name (form), |
19278 | bfd_get_filename (abfd)); | |
c906108c | 19279 | } |
28e94949 | 19280 | |
36586728 | 19281 | /* Super hack. */ |
cd6c91b4 | 19282 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19283 | attr->form = DW_FORM_GNU_ref_alt; |
19284 | ||
28e94949 JB |
19285 | /* We have seen instances where the compiler tried to emit a byte |
19286 | size attribute of -1 which ended up being encoded as an unsigned | |
19287 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19288 | an object of this size seems pretty unlikely so we can relatively | |
19289 | safely treat these cases as if the size attribute was invalid and | |
19290 | treat them as zero by default. */ | |
19291 | if (attr->name == DW_AT_byte_size | |
19292 | && form == DW_FORM_data4 | |
19293 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19294 | { |
19295 | complaint | |
b98664d3 | 19296 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19297 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19298 | DW_UNSND (attr) = 0; |
19299 | } | |
28e94949 | 19300 | |
c906108c SS |
19301 | return info_ptr; |
19302 | } | |
19303 | ||
a8329558 KW |
19304 | /* Read an attribute described by an abbreviated attribute. */ |
19305 | ||
d521ce57 | 19306 | static const gdb_byte * |
dee91e82 DE |
19307 | read_attribute (const struct die_reader_specs *reader, |
19308 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19309 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19310 | { |
19311 | attr->name = abbrev->name; | |
43988095 | 19312 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19313 | abbrev->implicit_const, info_ptr, |
19314 | need_reprocess); | |
a8329558 KW |
19315 | } |
19316 | ||
43988095 JK |
19317 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19318 | ||
19319 | static const char * | |
ed2dc618 | 19320 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 19321 | LONGEST str_offset) |
43988095 | 19322 | { |
5989a64e SM |
19323 | return dwarf2_per_objfile->per_bfd->str.read_string |
19324 | (dwarf2_per_objfile->objfile, str_offset, "DW_FORM_strp"); | |
c906108c SS |
19325 | } |
19326 | ||
43988095 JK |
19327 | /* Return pointer to string at .debug_str offset as read from BUF. |
19328 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19329 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19330 | ||
d521ce57 | 19331 | static const char * |
ed2dc618 SM |
19332 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19333 | const gdb_byte *buf, | |
cf2c3c16 TT |
19334 | const struct comp_unit_head *cu_header, |
19335 | unsigned int *bytes_read_ptr) | |
19336 | { | |
8266302d | 19337 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19338 | |
4f44ae6c | 19339 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
19340 | } |
19341 | ||
86c0bb4c | 19342 | /* See read.h. */ |
43988095 | 19343 | |
86c0bb4c TT |
19344 | const char * |
19345 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19346 | const struct comp_unit_head *cu_header, |
19347 | unsigned int *bytes_read_ptr) | |
43988095 | 19348 | { |
86c0bb4c | 19349 | bfd *abfd = objfile->obfd; |
8266302d | 19350 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19351 | |
5989a64e | 19352 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19353 | } |
19354 | ||
3019eac3 | 19355 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19356 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19357 | ADDR_SIZE is the size of addresses from the CU header. */ |
19358 | ||
19359 | static CORE_ADDR | |
ed2dc618 | 19360 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19361 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19362 | int addr_size) | |
3019eac3 DE |
19363 | { |
19364 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19365 | bfd *abfd = objfile->obfd; | |
19366 | const gdb_byte *info_ptr; | |
18a8505e | 19367 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19368 | |
5989a64e SM |
19369 | dwarf2_per_objfile->per_bfd->addr.read (objfile); |
19370 | if (dwarf2_per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 19371 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 19372 | objfile_name (objfile)); |
18a8505e | 19373 | if (addr_base_or_zero + addr_index * addr_size |
5989a64e | 19374 | >= dwarf2_per_objfile->per_bfd->addr.size) |
3019eac3 DE |
19375 | error (_("DW_FORM_addr_index pointing outside of " |
19376 | ".debug_addr section [in module %s]"), | |
4262abfb | 19377 | objfile_name (objfile)); |
5989a64e | 19378 | info_ptr = (dwarf2_per_objfile->per_bfd->addr.buffer |
18a8505e | 19379 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19380 | if (addr_size == 4) |
19381 | return bfd_get_32 (abfd, info_ptr); | |
19382 | else | |
19383 | return bfd_get_64 (abfd, info_ptr); | |
19384 | } | |
19385 | ||
19386 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19387 | ||
19388 | static CORE_ADDR | |
19389 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19390 | { | |
5e22e966 | 19391 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 19392 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
19393 | } |
19394 | ||
19395 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19396 | ||
19397 | static CORE_ADDR | |
d521ce57 | 19398 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19399 | unsigned int *bytes_read) |
19400 | { | |
5e22e966 | 19401 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
19402 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19403 | ||
19404 | return read_addr_index (cu, addr_index); | |
19405 | } | |
19406 | ||
450a1bfc | 19407 | /* See read.h. */ |
3019eac3 DE |
19408 | |
19409 | CORE_ADDR | |
82ca3f51 SM |
19410 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
19411 | dwarf2_per_objfile *dwarf2_per_objfile, | |
19412 | unsigned int addr_index) | |
3019eac3 | 19413 | { |
7188ed02 | 19414 | struct dwarf2_cu *cu = dwarf2_per_objfile->get_cu (per_cu); |
18a8505e | 19415 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19416 | int addr_size; |
19417 | ||
3019eac3 DE |
19418 | /* We need addr_base and addr_size. |
19419 | If we don't have PER_CU->cu, we have to get it. | |
19420 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19421 | which at this point doesn't seem justified: it's not clear how frequently | |
19422 | it would get used and it would increase the size of every PER_CU. | |
19423 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19424 | so we're not in uncharted territory here. | |
19425 | Alas we need to be a bit more complicated as addr_base is contained | |
19426 | in the DIE. | |
19427 | ||
19428 | We don't need to read the entire CU(/TU). | |
19429 | We just need the header and top level die. | |
a1b64ce1 | 19430 | |
3019eac3 | 19431 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19432 | For now we skip this optimization. */ |
3019eac3 DE |
19433 | |
19434 | if (cu != NULL) | |
19435 | { | |
19436 | addr_base = cu->addr_base; | |
19437 | addr_size = cu->header.addr_size; | |
19438 | } | |
19439 | else | |
19440 | { | |
2e671100 | 19441 | cutu_reader reader (per_cu, dwarf2_per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
19442 | addr_base = reader.cu->addr_base; |
19443 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19444 | } |
19445 | ||
ed2dc618 SM |
19446 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19447 | addr_size); | |
3019eac3 DE |
19448 | } |
19449 | ||
18a8505e AT |
19450 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19451 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19452 | DWO file. */ | |
3019eac3 | 19453 | |
d521ce57 | 19454 | static const char * |
18a8505e AT |
19455 | read_str_index (struct dwarf2_cu *cu, |
19456 | struct dwarf2_section_info *str_section, | |
19457 | struct dwarf2_section_info *str_offsets_section, | |
19458 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19459 | { |
5e22e966 | 19460 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19461 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19462 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19463 | bfd *abfd = objfile->obfd; |
d521ce57 | 19464 | const gdb_byte *info_ptr; |
3019eac3 | 19465 | ULONGEST str_offset; |
cf532bd1 | 19466 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19467 | |
96b79293 TT |
19468 | str_section->read (objfile); |
19469 | str_offsets_section->read (objfile); | |
73869dc2 | 19470 | if (str_section->buffer == NULL) |
18a8505e | 19471 | error (_("%s used without %s section" |
9d8780f0 | 19472 | " in CU at offset %s [in module %s]"), |
96b79293 | 19473 | form_name, str_section->get_name (), |
18a8505e | 19474 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19475 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19476 | error (_("%s used without %s section" |
9d8780f0 | 19477 | " in CU at offset %s [in module %s]"), |
96b79293 | 19478 | form_name, str_section->get_name (), |
18a8505e | 19479 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19480 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19481 | + str_offsets_base |
3019eac3 DE |
19482 | + str_index * cu->header.offset_size); |
19483 | if (cu->header.offset_size == 4) | |
19484 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19485 | else | |
19486 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19487 | if (str_offset >= str_section->size) |
57d63ce2 | 19488 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19489 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19490 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19491 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19492 | } |
19493 | ||
18a8505e AT |
19494 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19495 | ||
19496 | static const char * | |
19497 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19498 | { | |
19499 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19500 | ? reader->cu->header.addr_size : 0; | |
19501 | return read_str_index (reader->cu, | |
19502 | &reader->dwo_file->sections.str, | |
19503 | &reader->dwo_file->sections.str_offsets, | |
19504 | str_offsets_base, str_index); | |
19505 | } | |
19506 | ||
19507 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19508 | ||
19509 | static const char * | |
19510 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19511 | { | |
5e22e966 | 19512 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
19513 | const char *objf_name = objfile_name (objfile); |
19514 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19515 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19516 | ||
19517 | if (!cu->str_offsets_base.has_value ()) | |
19518 | error (_("%s used in Fission stub without %s" | |
19519 | " in CU at offset 0x%lx [in module %s]"), | |
19520 | form_name, str_offsets_attr_name, | |
19521 | (long) cu->header.offset_size, objf_name); | |
19522 | ||
19523 | return read_str_index (cu, | |
5e22e966 SM |
19524 | &cu->per_objfile->per_bfd->str, |
19525 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
19526 | *cu->str_offsets_base, str_index); |
19527 | } | |
19528 | ||
3019eac3 DE |
19529 | /* Return the length of an LEB128 number in BUF. */ |
19530 | ||
19531 | static int | |
19532 | leb128_size (const gdb_byte *buf) | |
19533 | { | |
19534 | const gdb_byte *begin = buf; | |
19535 | gdb_byte byte; | |
19536 | ||
19537 | while (1) | |
19538 | { | |
19539 | byte = *buf++; | |
19540 | if ((byte & 128) == 0) | |
19541 | return buf - begin; | |
19542 | } | |
19543 | } | |
19544 | ||
c906108c | 19545 | static void |
e142c38c | 19546 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19547 | { |
19548 | switch (lang) | |
19549 | { | |
19550 | case DW_LANG_C89: | |
76bee0cc | 19551 | case DW_LANG_C99: |
0cfd832f | 19552 | case DW_LANG_C11: |
c906108c | 19553 | case DW_LANG_C: |
d1be3247 | 19554 | case DW_LANG_UPC: |
e142c38c | 19555 | cu->language = language_c; |
c906108c | 19556 | break; |
9c37b5ae | 19557 | case DW_LANG_Java: |
c906108c | 19558 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19559 | case DW_LANG_C_plus_plus_11: |
19560 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19561 | cu->language = language_cplus; |
c906108c | 19562 | break; |
6aecb9c2 JB |
19563 | case DW_LANG_D: |
19564 | cu->language = language_d; | |
19565 | break; | |
c906108c SS |
19566 | case DW_LANG_Fortran77: |
19567 | case DW_LANG_Fortran90: | |
b21b22e0 | 19568 | case DW_LANG_Fortran95: |
f7de9aab MW |
19569 | case DW_LANG_Fortran03: |
19570 | case DW_LANG_Fortran08: | |
e142c38c | 19571 | cu->language = language_fortran; |
c906108c | 19572 | break; |
a766d390 DE |
19573 | case DW_LANG_Go: |
19574 | cu->language = language_go; | |
19575 | break; | |
c906108c | 19576 | case DW_LANG_Mips_Assembler: |
e142c38c | 19577 | cu->language = language_asm; |
c906108c SS |
19578 | break; |
19579 | case DW_LANG_Ada83: | |
8aaf0b47 | 19580 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19581 | cu->language = language_ada; |
19582 | break; | |
72019c9c GM |
19583 | case DW_LANG_Modula2: |
19584 | cu->language = language_m2; | |
19585 | break; | |
fe8e67fd PM |
19586 | case DW_LANG_Pascal83: |
19587 | cu->language = language_pascal; | |
19588 | break; | |
22566fbd DJ |
19589 | case DW_LANG_ObjC: |
19590 | cu->language = language_objc; | |
19591 | break; | |
c44af4eb TT |
19592 | case DW_LANG_Rust: |
19593 | case DW_LANG_Rust_old: | |
19594 | cu->language = language_rust; | |
19595 | break; | |
c906108c SS |
19596 | case DW_LANG_Cobol74: |
19597 | case DW_LANG_Cobol85: | |
c906108c | 19598 | default: |
e142c38c | 19599 | cu->language = language_minimal; |
c906108c SS |
19600 | break; |
19601 | } | |
e142c38c | 19602 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19603 | } |
19604 | ||
19605 | /* Return the named attribute or NULL if not there. */ | |
19606 | ||
19607 | static struct attribute * | |
e142c38c | 19608 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19609 | { |
a48e046c | 19610 | for (;;) |
c906108c | 19611 | { |
a48e046c TT |
19612 | unsigned int i; |
19613 | struct attribute *spec = NULL; | |
19614 | ||
19615 | for (i = 0; i < die->num_attrs; ++i) | |
19616 | { | |
19617 | if (die->attrs[i].name == name) | |
19618 | return &die->attrs[i]; | |
19619 | if (die->attrs[i].name == DW_AT_specification | |
19620 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19621 | spec = &die->attrs[i]; | |
19622 | } | |
19623 | ||
19624 | if (!spec) | |
19625 | break; | |
c906108c | 19626 | |
f2f0e013 | 19627 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19628 | } |
c5aa993b | 19629 | |
c906108c SS |
19630 | return NULL; |
19631 | } | |
19632 | ||
7d45c7c3 KB |
19633 | /* Return the string associated with a string-typed attribute, or NULL if it |
19634 | is either not found or is of an incorrect type. */ | |
19635 | ||
19636 | static const char * | |
19637 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19638 | { | |
19639 | struct attribute *attr; | |
19640 | const char *str = NULL; | |
19641 | ||
19642 | attr = dwarf2_attr (die, name, cu); | |
19643 | ||
19644 | if (attr != NULL) | |
19645 | { | |
e61108c9 TT |
19646 | str = attr->value_as_string (); |
19647 | if (str == nullptr) | |
b98664d3 | 19648 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19649 | "DIE at %s in module %s"), |
19650 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 19651 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
19652 | } |
19653 | ||
19654 | return str; | |
19655 | } | |
19656 | ||
a084a2a6 | 19657 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19658 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19659 | static const char * |
19660 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19661 | { | |
19662 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19663 | if (dwo_name == nullptr) | |
19664 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19665 | return dwo_name; | |
19666 | } | |
19667 | ||
05cf31d1 JB |
19668 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19669 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19670 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19671 | |
19672 | static int | |
19673 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19674 | { | |
19675 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19676 | ||
19677 | return (attr && DW_UNSND (attr)); | |
19678 | } | |
19679 | ||
3ca72b44 | 19680 | static int |
e142c38c | 19681 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19682 | { |
05cf31d1 JB |
19683 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19684 | which value is non-zero. However, we have to be careful with | |
19685 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19686 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19687 | end up accidently finding a declaration attribute that belongs | |
19688 | to a different DIE referenced by the specification attribute, | |
19689 | even though the given DIE does not have a declaration attribute. */ | |
19690 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19691 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19692 | } |
19693 | ||
63d06c5c | 19694 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19695 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19696 | containing the return value on output. If there is no |
19697 | specification, but there is an abstract origin, that is | |
19698 | returned. */ | |
63d06c5c DC |
19699 | |
19700 | static struct die_info * | |
f2f0e013 | 19701 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19702 | { |
f2f0e013 DJ |
19703 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19704 | *spec_cu); | |
63d06c5c | 19705 | |
edb3359d DJ |
19706 | if (spec_attr == NULL) |
19707 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19708 | ||
63d06c5c DC |
19709 | if (spec_attr == NULL) |
19710 | return NULL; | |
19711 | else | |
f2f0e013 | 19712 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19713 | } |
c906108c | 19714 | |
527f3840 JK |
19715 | /* Stub for free_line_header to match void * callback types. */ |
19716 | ||
19717 | static void | |
19718 | free_line_header_voidp (void *arg) | |
19719 | { | |
9a3c8263 | 19720 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19721 | |
fff8551c | 19722 | delete lh; |
527f3840 JK |
19723 | } |
19724 | ||
83769d0b | 19725 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19726 | |
19727 | static struct dwarf2_section_info * | |
19728 | get_debug_line_section (struct dwarf2_cu *cu) | |
19729 | { | |
19730 | struct dwarf2_section_info *section; | |
5e22e966 | 19731 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
36586728 TT |
19732 | |
19733 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19734 | DWO file. */ | |
19735 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19736 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19737 | else if (cu->per_cu->is_dwz) | |
19738 | { | |
c3699833 | 19739 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
36586728 TT |
19740 | |
19741 | section = &dwz->line; | |
19742 | } | |
19743 | else | |
5989a64e | 19744 | section = &dwarf2_per_objfile->per_bfd->line; |
36586728 TT |
19745 | |
19746 | return section; | |
19747 | } | |
19748 | ||
debd256d | 19749 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19750 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19751 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19752 | Returns NULL if there is a problem reading the header, e.g., if it |
19753 | has a version we don't understand. | |
debd256d JB |
19754 | |
19755 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19756 | the returned object point into the dwarf line section buffer, |
19757 | and must not be freed. */ | |
ae2de4f8 | 19758 | |
fff8551c | 19759 | static line_header_up |
9c541725 | 19760 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19761 | { |
3019eac3 | 19762 | struct dwarf2_section_info *section; |
5e22e966 | 19763 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19764 | |
36586728 | 19765 | section = get_debug_line_section (cu); |
96b79293 | 19766 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19767 | if (section->buffer == NULL) |
debd256d | 19768 | { |
3019eac3 | 19769 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19770 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19771 | else |
b98664d3 | 19772 | complaint (_("missing .debug_line section")); |
debd256d JB |
19773 | return 0; |
19774 | } | |
19775 | ||
0df7ad3a TT |
19776 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19777 | dwarf2_per_objfile, section, | |
19778 | &cu->header); | |
debd256d | 19779 | } |
c906108c | 19780 | |
c6da4cef | 19781 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19782 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19783 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19784 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19785 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19786 | |
d521ce57 | 19787 | static const char * |
7ba99d21 | 19788 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19789 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19790 | const char *comp_dir, |
19791 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19792 | { |
d521ce57 TT |
19793 | const char *include_name = fe.name; |
19794 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19795 | const char *pst_filename; |
c6da4cef DE |
19796 | int file_is_pst; |
19797 | ||
8c43009f | 19798 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19799 | |
c89b44cd | 19800 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19801 | if (!IS_ABSOLUTE_PATH (include_name) |
19802 | && (dir_name != NULL || comp_dir != NULL)) | |
19803 | { | |
19804 | /* Avoid creating a duplicate psymtab for PST. | |
19805 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19806 | Before we do the comparison, however, we need to account | |
19807 | for DIR_NAME and COMP_DIR. | |
19808 | First prepend dir_name (if non-NULL). If we still don't | |
19809 | have an absolute path prepend comp_dir (if non-NULL). | |
19810 | However, the directory we record in the include-file's | |
19811 | psymtab does not contain COMP_DIR (to match the | |
19812 | corresponding symtab(s)). | |
19813 | ||
19814 | Example: | |
19815 | ||
19816 | bash$ cd /tmp | |
19817 | bash$ gcc -g ./hello.c | |
19818 | include_name = "hello.c" | |
19819 | dir_name = "." | |
19820 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19821 | DW_AT_name = "./hello.c" |
19822 | ||
19823 | */ | |
c6da4cef DE |
19824 | |
19825 | if (dir_name != NULL) | |
19826 | { | |
c89b44cd TT |
19827 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19828 | include_name, (char *) NULL)); | |
19829 | include_name = name_holder->get (); | |
c6da4cef | 19830 | include_name_to_compare = include_name; |
c6da4cef DE |
19831 | } |
19832 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19833 | { | |
c89b44cd TT |
19834 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19835 | include_name, (char *) NULL)); | |
19836 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19837 | } |
19838 | } | |
19839 | ||
19840 | pst_filename = pst->filename; | |
c89b44cd | 19841 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19842 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19843 | { | |
c89b44cd TT |
19844 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19845 | pst_filename, (char *) NULL)); | |
19846 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19847 | } |
19848 | ||
1e3fad37 | 19849 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19850 | |
c6da4cef DE |
19851 | if (file_is_pst) |
19852 | return NULL; | |
19853 | return include_name; | |
19854 | } | |
19855 | ||
d9b3de22 DE |
19856 | /* State machine to track the state of the line number program. */ |
19857 | ||
6f77053d | 19858 | class lnp_state_machine |
d9b3de22 | 19859 | { |
6f77053d PA |
19860 | public: |
19861 | /* Initialize a machine state for the start of a line number | |
19862 | program. */ | |
804d2729 TT |
19863 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19864 | bool record_lines_p); | |
6f77053d | 19865 | |
8c43009f PA |
19866 | file_entry *current_file () |
19867 | { | |
19868 | /* lh->file_names is 0-based, but the file name numbers in the | |
19869 | statement program are 1-based. */ | |
6f77053d PA |
19870 | return m_line_header->file_name_at (m_file); |
19871 | } | |
19872 | ||
19873 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19874 | we're processing the end of a sequence. */ | |
19875 | void record_line (bool end_sequence); | |
19876 | ||
7ab6656f OJ |
19877 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19878 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19879 | void check_line_address (struct dwarf2_cu *cu, |
19880 | const gdb_byte *line_ptr, | |
7ab6656f | 19881 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19882 | |
19883 | void handle_set_discriminator (unsigned int discriminator) | |
19884 | { | |
19885 | m_discriminator = discriminator; | |
19886 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19887 | } | |
19888 | ||
19889 | /* Handle DW_LNE_set_address. */ | |
19890 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19891 | { | |
19892 | m_op_index = 0; | |
19893 | address += baseaddr; | |
19894 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19895 | } | |
19896 | ||
19897 | /* Handle DW_LNS_advance_pc. */ | |
19898 | void handle_advance_pc (CORE_ADDR adjust); | |
19899 | ||
19900 | /* Handle a special opcode. */ | |
19901 | void handle_special_opcode (unsigned char op_code); | |
19902 | ||
19903 | /* Handle DW_LNS_advance_line. */ | |
19904 | void handle_advance_line (int line_delta) | |
19905 | { | |
19906 | advance_line (line_delta); | |
19907 | } | |
19908 | ||
19909 | /* Handle DW_LNS_set_file. */ | |
19910 | void handle_set_file (file_name_index file); | |
19911 | ||
19912 | /* Handle DW_LNS_negate_stmt. */ | |
19913 | void handle_negate_stmt () | |
19914 | { | |
19915 | m_is_stmt = !m_is_stmt; | |
19916 | } | |
19917 | ||
19918 | /* Handle DW_LNS_const_add_pc. */ | |
19919 | void handle_const_add_pc (); | |
19920 | ||
19921 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19922 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19923 | { | |
19924 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19925 | m_op_index = 0; | |
19926 | } | |
19927 | ||
19928 | /* Handle DW_LNS_copy. */ | |
19929 | void handle_copy () | |
19930 | { | |
19931 | record_line (false); | |
19932 | m_discriminator = 0; | |
19933 | } | |
19934 | ||
19935 | /* Handle DW_LNE_end_sequence. */ | |
19936 | void handle_end_sequence () | |
19937 | { | |
804d2729 | 19938 | m_currently_recording_lines = true; |
6f77053d PA |
19939 | } |
19940 | ||
19941 | private: | |
19942 | /* Advance the line by LINE_DELTA. */ | |
19943 | void advance_line (int line_delta) | |
19944 | { | |
19945 | m_line += line_delta; | |
19946 | ||
19947 | if (line_delta != 0) | |
19948 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19949 | } |
19950 | ||
804d2729 TT |
19951 | struct dwarf2_cu *m_cu; |
19952 | ||
6f77053d PA |
19953 | gdbarch *m_gdbarch; |
19954 | ||
19955 | /* True if we're recording lines. | |
19956 | Otherwise we're building partial symtabs and are just interested in | |
19957 | finding include files mentioned by the line number program. */ | |
19958 | bool m_record_lines_p; | |
19959 | ||
8c43009f | 19960 | /* The line number header. */ |
6f77053d | 19961 | line_header *m_line_header; |
8c43009f | 19962 | |
6f77053d PA |
19963 | /* These are part of the standard DWARF line number state machine, |
19964 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19965 | |
6f77053d | 19966 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19967 | /* The line table index of the current file. */ |
19968 | file_name_index m_file = 1; | |
6f77053d PA |
19969 | unsigned int m_line = 1; |
19970 | ||
19971 | /* These are initialized in the constructor. */ | |
19972 | ||
19973 | CORE_ADDR m_address; | |
19974 | bool m_is_stmt; | |
19975 | unsigned int m_discriminator; | |
d9b3de22 DE |
19976 | |
19977 | /* Additional bits of state we need to track. */ | |
19978 | ||
19979 | /* The last file that we called dwarf2_start_subfile for. | |
19980 | This is only used for TLLs. */ | |
6f77053d | 19981 | unsigned int m_last_file = 0; |
d9b3de22 | 19982 | /* The last file a line number was recorded for. */ |
6f77053d | 19983 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19984 | |
804d2729 TT |
19985 | /* When true, record the lines we decode. */ |
19986 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19987 | |
19988 | /* The last line number that was recorded, used to coalesce | |
19989 | consecutive entries for the same line. This can happen, for | |
19990 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19991 | unsigned int m_last_line = 0; |
19992 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19993 | }; |
d9b3de22 | 19994 | |
6f77053d PA |
19995 | void |
19996 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19997 | { | |
19998 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19999 | / m_line_header->maximum_ops_per_instruction) | |
20000 | * m_line_header->minimum_instruction_length); | |
20001 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20002 | m_op_index = ((m_op_index + adjust) | |
20003 | % m_line_header->maximum_ops_per_instruction); | |
20004 | } | |
d9b3de22 | 20005 | |
6f77053d PA |
20006 | void |
20007 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20008 | { |
6f77053d | 20009 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20010 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20011 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20012 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20013 | / m_line_header->maximum_ops_per_instruction) |
20014 | * m_line_header->minimum_instruction_length); | |
20015 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20016 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20017 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20018 | |
258bf0ee | 20019 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20020 | advance_line (line_delta); |
20021 | record_line (false); | |
20022 | m_discriminator = 0; | |
20023 | } | |
d9b3de22 | 20024 | |
6f77053d PA |
20025 | void |
20026 | lnp_state_machine::handle_set_file (file_name_index file) | |
20027 | { | |
20028 | m_file = file; | |
20029 | ||
20030 | const file_entry *fe = current_file (); | |
20031 | if (fe == NULL) | |
20032 | dwarf2_debug_line_missing_file_complaint (); | |
20033 | else if (m_record_lines_p) | |
20034 | { | |
20035 | const char *dir = fe->include_dir (m_line_header); | |
20036 | ||
c24bdb02 | 20037 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20038 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20039 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20040 | } |
20041 | } | |
20042 | ||
20043 | void | |
20044 | lnp_state_machine::handle_const_add_pc () | |
20045 | { | |
20046 | CORE_ADDR adjust | |
20047 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20048 | ||
20049 | CORE_ADDR addr_adj | |
20050 | = (((m_op_index + adjust) | |
20051 | / m_line_header->maximum_ops_per_instruction) | |
20052 | * m_line_header->minimum_instruction_length); | |
20053 | ||
20054 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20055 | m_op_index = ((m_op_index + adjust) | |
20056 | % m_line_header->maximum_ops_per_instruction); | |
20057 | } | |
d9b3de22 | 20058 | |
a05a36a5 DE |
20059 | /* Return non-zero if we should add LINE to the line number table. |
20060 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20061 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20062 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20063 | had a non-zero discriminator. | |
20064 | ||
20065 | We have to be careful in the presence of discriminators. | |
20066 | E.g., for this line: | |
20067 | ||
20068 | for (i = 0; i < 100000; i++); | |
20069 | ||
20070 | clang can emit four line number entries for that one line, | |
20071 | each with a different discriminator. | |
20072 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20073 | ||
20074 | However, we want gdb to coalesce all four entries into one. | |
20075 | Otherwise the user could stepi into the middle of the line and | |
20076 | gdb would get confused about whether the pc really was in the | |
20077 | middle of the line. | |
20078 | ||
20079 | Things are further complicated by the fact that two consecutive | |
20080 | line number entries for the same line is a heuristic used by gcc | |
20081 | to denote the end of the prologue. So we can't just discard duplicate | |
20082 | entries, we have to be selective about it. The heuristic we use is | |
20083 | that we only collapse consecutive entries for the same line if at least | |
20084 | one of those entries has a non-zero discriminator. PR 17276. | |
20085 | ||
20086 | Note: Addresses in the line number state machine can never go backwards | |
20087 | within one sequence, thus this coalescing is ok. */ | |
20088 | ||
20089 | static int | |
804d2729 TT |
20090 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20091 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20092 | int line_has_non_zero_discriminator, |
20093 | struct subfile *last_subfile) | |
20094 | { | |
c24bdb02 | 20095 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20096 | return 1; |
20097 | if (line != last_line) | |
20098 | return 1; | |
20099 | /* Same line for the same file that we've seen already. | |
20100 | As a last check, for pr 17276, only record the line if the line | |
20101 | has never had a non-zero discriminator. */ | |
20102 | if (!line_has_non_zero_discriminator) | |
20103 | return 1; | |
20104 | return 0; | |
20105 | } | |
20106 | ||
804d2729 TT |
20107 | /* Use the CU's builder to record line number LINE beginning at |
20108 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20109 | |
20110 | static void | |
d9b3de22 | 20111 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20112 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20113 | struct dwarf2_cu *cu) |
252a6764 DE |
20114 | { |
20115 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20116 | ||
27e0867f DE |
20117 | if (dwarf_line_debug) |
20118 | { | |
20119 | fprintf_unfiltered (gdb_stdlog, | |
20120 | "Recording line %u, file %s, address %s\n", | |
20121 | line, lbasename (subfile->name), | |
20122 | paddress (gdbarch, address)); | |
20123 | } | |
20124 | ||
804d2729 | 20125 | if (cu != nullptr) |
8c95582d | 20126 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20127 | } |
20128 | ||
20129 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20130 | Mark the end of a set of line number records. | |
d9b3de22 | 20131 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20132 | If SUBFILE is NULL the request is ignored. */ |
20133 | ||
20134 | static void | |
20135 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20136 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20137 | { |
27e0867f DE |
20138 | if (subfile == NULL) |
20139 | return; | |
20140 | ||
20141 | if (dwarf_line_debug) | |
20142 | { | |
20143 | fprintf_unfiltered (gdb_stdlog, | |
20144 | "Finishing current line, file %s, address %s\n", | |
20145 | lbasename (subfile->name), | |
20146 | paddress (gdbarch, address)); | |
20147 | } | |
20148 | ||
8c95582d | 20149 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20150 | } |
20151 | ||
6f77053d PA |
20152 | void |
20153 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20154 | { |
d9b3de22 DE |
20155 | if (dwarf_line_debug) |
20156 | { | |
20157 | fprintf_unfiltered (gdb_stdlog, | |
20158 | "Processing actual line %u: file %u," | |
94a72be7 | 20159 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20160 | m_line, m_file, |
6f77053d | 20161 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20162 | m_is_stmt, m_discriminator, |
20163 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20164 | } |
20165 | ||
6f77053d | 20166 | file_entry *fe = current_file (); |
8c43009f PA |
20167 | |
20168 | if (fe == NULL) | |
d9b3de22 DE |
20169 | dwarf2_debug_line_missing_file_complaint (); |
20170 | /* For now we ignore lines not starting on an instruction boundary. | |
20171 | But not when processing end_sequence for compatibility with the | |
20172 | previous version of the code. */ | |
6f77053d | 20173 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20174 | { |
8c43009f | 20175 | fe->included_p = 1; |
8c95582d | 20176 | if (m_record_lines_p) |
d9b3de22 | 20177 | { |
c24bdb02 | 20178 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20179 | || end_sequence) |
d9b3de22 | 20180 | { |
804d2729 TT |
20181 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20182 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20183 | } |
20184 | ||
20185 | if (!end_sequence) | |
20186 | { | |
8c95582d AB |
20187 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20188 | ||
804d2729 | 20189 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20190 | m_line_has_non_zero_discriminator, |
20191 | m_last_subfile)) | |
d9b3de22 | 20192 | { |
c24bdb02 | 20193 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20194 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20195 | builder->get_current_subfile (), |
8c95582d | 20196 | m_line, m_address, is_stmt, |
804d2729 | 20197 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20198 | } |
c24bdb02 | 20199 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20200 | m_last_line = m_line; |
d9b3de22 DE |
20201 | } |
20202 | } | |
20203 | } | |
20204 | } | |
20205 | ||
804d2729 TT |
20206 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20207 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20208 | { |
804d2729 | 20209 | m_cu = cu; |
6f77053d PA |
20210 | m_gdbarch = arch; |
20211 | m_record_lines_p = record_lines_p; | |
20212 | m_line_header = lh; | |
d9b3de22 | 20213 | |
804d2729 | 20214 | m_currently_recording_lines = true; |
d9b3de22 | 20215 | |
d9b3de22 DE |
20216 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20217 | was a line entry for it so that the backend has a chance to adjust it | |
20218 | and also record it in case it needs it. This is currently used by MIPS | |
20219 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20220 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20221 | m_is_stmt = lh->default_is_stmt; | |
20222 | m_discriminator = 0; | |
252a6764 DE |
20223 | } |
20224 | ||
6f77053d PA |
20225 | void |
20226 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20227 | const gdb_byte *line_ptr, | |
7ab6656f | 20228 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20229 | { |
7ab6656f OJ |
20230 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20231 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20232 | values of zero to preserve GDB's previous behaviour which is to handle | |
20233 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20234 | |
7ab6656f | 20235 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20236 | { |
20237 | /* This line table is for a function which has been | |
20238 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20239 | ||
5e22e966 | 20240 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20241 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20242 | ||
b98664d3 | 20243 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20244 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20245 | m_currently_recording_lines = false; |
20246 | /* Note: m_currently_recording_lines is left as false until we see | |
20247 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20248 | } |
20249 | } | |
20250 | ||
f3f5162e | 20251 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20252 | Process the line number information in LH. |
20253 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20254 | program in order to set included_p for every referenced header. */ | |
debd256d | 20255 | |
c906108c | 20256 | static void |
43f3e411 DE |
20257 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20258 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20259 | { |
d521ce57 TT |
20260 | const gdb_byte *line_ptr, *extended_end; |
20261 | const gdb_byte *line_end; | |
a8c50c1f | 20262 | unsigned int bytes_read, extended_len; |
699ca60a | 20263 | unsigned char op_code, extended_op; |
e142c38c | 20264 | CORE_ADDR baseaddr; |
5e22e966 | 20265 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20266 | bfd *abfd = objfile->obfd; |
08feed99 | 20267 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20268 | /* True if we're recording line info (as opposed to building partial |
20269 | symtabs and just interested in finding include files mentioned by | |
20270 | the line number program). */ | |
20271 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20272 | |
b3b3bada | 20273 | baseaddr = objfile->text_section_offset (); |
c906108c | 20274 | |
debd256d JB |
20275 | line_ptr = lh->statement_program_start; |
20276 | line_end = lh->statement_program_end; | |
c906108c SS |
20277 | |
20278 | /* Read the statement sequences until there's nothing left. */ | |
20279 | while (line_ptr < line_end) | |
20280 | { | |
6f77053d PA |
20281 | /* The DWARF line number program state machine. Reset the state |
20282 | machine at the start of each sequence. */ | |
804d2729 | 20283 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20284 | bool end_sequence = false; |
d9b3de22 | 20285 | |
8c43009f | 20286 | if (record_lines_p) |
c906108c | 20287 | { |
8c43009f PA |
20288 | /* Start a subfile for the current file of the state |
20289 | machine. */ | |
20290 | const file_entry *fe = state_machine.current_file (); | |
20291 | ||
20292 | if (fe != NULL) | |
804d2729 | 20293 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20294 | } |
20295 | ||
a738430d | 20296 | /* Decode the table. */ |
d9b3de22 | 20297 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20298 | { |
20299 | op_code = read_1_byte (abfd, line_ptr); | |
20300 | line_ptr += 1; | |
9aa1fe7e | 20301 | |
debd256d | 20302 | if (op_code >= lh->opcode_base) |
6e70227d | 20303 | { |
8e07a239 | 20304 | /* Special opcode. */ |
6f77053d | 20305 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20306 | } |
20307 | else switch (op_code) | |
c906108c SS |
20308 | { |
20309 | case DW_LNS_extended_op: | |
3e43a32a MS |
20310 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20311 | &bytes_read); | |
473b7be6 | 20312 | line_ptr += bytes_read; |
a8c50c1f | 20313 | extended_end = line_ptr + extended_len; |
c906108c SS |
20314 | extended_op = read_1_byte (abfd, line_ptr); |
20315 | line_ptr += 1; | |
20316 | switch (extended_op) | |
20317 | { | |
20318 | case DW_LNE_end_sequence: | |
6f77053d PA |
20319 | state_machine.handle_end_sequence (); |
20320 | end_sequence = true; | |
c906108c SS |
20321 | break; |
20322 | case DW_LNE_set_address: | |
d9b3de22 DE |
20323 | { |
20324 | CORE_ADDR address | |
c8a7a66f | 20325 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20326 | line_ptr += bytes_read; |
6f77053d PA |
20327 | |
20328 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20329 | lowpc - baseaddr, address); |
6f77053d | 20330 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20331 | } |
c906108c SS |
20332 | break; |
20333 | case DW_LNE_define_file: | |
debd256d | 20334 | { |
d521ce57 | 20335 | const char *cur_file; |
ecfb656c PA |
20336 | unsigned int mod_time, length; |
20337 | dir_index dindex; | |
6e70227d | 20338 | |
3e43a32a MS |
20339 | cur_file = read_direct_string (abfd, line_ptr, |
20340 | &bytes_read); | |
debd256d | 20341 | line_ptr += bytes_read; |
ecfb656c | 20342 | dindex = (dir_index) |
debd256d JB |
20343 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20344 | line_ptr += bytes_read; | |
20345 | mod_time = | |
20346 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20347 | line_ptr += bytes_read; | |
20348 | length = | |
20349 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20350 | line_ptr += bytes_read; | |
ecfb656c | 20351 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20352 | } |
c906108c | 20353 | break; |
d0c6ba3d | 20354 | case DW_LNE_set_discriminator: |
6f77053d PA |
20355 | { |
20356 | /* The discriminator is not interesting to the | |
20357 | debugger; just ignore it. We still need to | |
20358 | check its value though: | |
20359 | if there are consecutive entries for the same | |
20360 | (non-prologue) line we want to coalesce them. | |
20361 | PR 17276. */ | |
20362 | unsigned int discr | |
20363 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20364 | line_ptr += bytes_read; | |
20365 | ||
20366 | state_machine.handle_set_discriminator (discr); | |
20367 | } | |
d0c6ba3d | 20368 | break; |
c906108c | 20369 | default: |
b98664d3 | 20370 | complaint (_("mangled .debug_line section")); |
debd256d | 20371 | return; |
c906108c | 20372 | } |
a8c50c1f DJ |
20373 | /* Make sure that we parsed the extended op correctly. If e.g. |
20374 | we expected a different address size than the producer used, | |
20375 | we may have read the wrong number of bytes. */ | |
20376 | if (line_ptr != extended_end) | |
20377 | { | |
b98664d3 | 20378 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20379 | return; |
20380 | } | |
c906108c SS |
20381 | break; |
20382 | case DW_LNS_copy: | |
6f77053d | 20383 | state_machine.handle_copy (); |
c906108c SS |
20384 | break; |
20385 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20386 | { |
20387 | CORE_ADDR adjust | |
20388 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20389 | line_ptr += bytes_read; |
6f77053d PA |
20390 | |
20391 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20392 | } |
c906108c SS |
20393 | break; |
20394 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20395 | { |
20396 | int line_delta | |
20397 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20398 | line_ptr += bytes_read; |
6f77053d PA |
20399 | |
20400 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20401 | } |
c906108c SS |
20402 | break; |
20403 | case DW_LNS_set_file: | |
d9b3de22 | 20404 | { |
6f77053d | 20405 | file_name_index file |
ecfb656c PA |
20406 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20407 | &bytes_read); | |
d9b3de22 | 20408 | line_ptr += bytes_read; |
8c43009f | 20409 | |
6f77053d | 20410 | state_machine.handle_set_file (file); |
d9b3de22 | 20411 | } |
c906108c SS |
20412 | break; |
20413 | case DW_LNS_set_column: | |
0ad93d4f | 20414 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20415 | line_ptr += bytes_read; |
20416 | break; | |
20417 | case DW_LNS_negate_stmt: | |
6f77053d | 20418 | state_machine.handle_negate_stmt (); |
c906108c SS |
20419 | break; |
20420 | case DW_LNS_set_basic_block: | |
c906108c | 20421 | break; |
c2c6d25f JM |
20422 | /* Add to the address register of the state machine the |
20423 | address increment value corresponding to special opcode | |
a738430d MK |
20424 | 255. I.e., this value is scaled by the minimum |
20425 | instruction length since special opcode 255 would have | |
b021a221 | 20426 | scaled the increment. */ |
c906108c | 20427 | case DW_LNS_const_add_pc: |
6f77053d | 20428 | state_machine.handle_const_add_pc (); |
c906108c SS |
20429 | break; |
20430 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20431 | { |
6f77053d | 20432 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20433 | line_ptr += 2; |
6f77053d PA |
20434 | |
20435 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20436 | } |
c906108c | 20437 | break; |
9aa1fe7e | 20438 | default: |
a738430d MK |
20439 | { |
20440 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20441 | int i; |
a738430d | 20442 | |
debd256d | 20443 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20444 | { |
20445 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20446 | line_ptr += bytes_read; | |
20447 | } | |
20448 | } | |
c906108c SS |
20449 | } |
20450 | } | |
d9b3de22 DE |
20451 | |
20452 | if (!end_sequence) | |
20453 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20454 | ||
20455 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20456 | in which case we still finish recording the last line). */ | |
6f77053d | 20457 | state_machine.record_line (true); |
c906108c | 20458 | } |
f3f5162e DE |
20459 | } |
20460 | ||
20461 | /* Decode the Line Number Program (LNP) for the given line_header | |
20462 | structure and CU. The actual information extracted and the type | |
20463 | of structures created from the LNP depends on the value of PST. | |
20464 | ||
20465 | 1. If PST is NULL, then this procedure uses the data from the program | |
20466 | to create all necessary symbol tables, and their linetables. | |
20467 | ||
20468 | 2. If PST is not NULL, this procedure reads the program to determine | |
20469 | the list of files included by the unit represented by PST, and | |
20470 | builds all the associated partial symbol tables. | |
20471 | ||
20472 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20473 | It is used for relative paths in the line table. | |
20474 | NOTE: When processing partial symtabs (pst != NULL), | |
20475 | comp_dir == pst->dirname. | |
20476 | ||
20477 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20478 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20479 | symtab we don't use it in the name of the psymtabs we create. | |
20480 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20481 | A good testcase for this is mb-inline.exp. |
20482 | ||
527f3840 JK |
20483 | LOWPC is the lowest address in CU (or 0 if not known). |
20484 | ||
20485 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20486 | for its PC<->lines mapping information. Otherwise only the filename | |
20487 | table is read in. */ | |
f3f5162e DE |
20488 | |
20489 | static void | |
20490 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20491 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20492 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20493 | { |
5e22e966 | 20494 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20495 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20496 | |
527f3840 JK |
20497 | if (decode_mapping) |
20498 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20499 | |
20500 | if (decode_for_pst_p) | |
20501 | { | |
aaa75496 JB |
20502 | /* Now that we're done scanning the Line Header Program, we can |
20503 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20504 | for (auto &file_entry : lh->file_names ()) |
20505 | if (file_entry.included_p == 1) | |
aaa75496 | 20506 | { |
c89b44cd | 20507 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20508 | const char *include_name = |
7ba99d21 AT |
20509 | psymtab_include_file_name (lh, file_entry, pst, |
20510 | comp_dir, &name_holder); | |
c6da4cef | 20511 | if (include_name != NULL) |
aaa75496 JB |
20512 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20513 | } | |
20514 | } | |
cb1df416 DJ |
20515 | else |
20516 | { | |
20517 | /* Make sure a symtab is created for every file, even files | |
20518 | which contain only variables (i.e. no code with associated | |
20519 | line numbers). */ | |
c24bdb02 KS |
20520 | buildsym_compunit *builder = cu->get_builder (); |
20521 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20522 | |
7ba99d21 | 20523 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20524 | { |
804d2729 | 20525 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20526 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20527 | { |
c24bdb02 | 20528 | builder->get_current_subfile ()->symtab |
804d2729 | 20529 | = allocate_symtab (cust, |
c24bdb02 | 20530 | builder->get_current_subfile ()->name); |
43f3e411 | 20531 | } |
c24bdb02 | 20532 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20533 | } |
20534 | } | |
c906108c SS |
20535 | } |
20536 | ||
20537 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20538 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20539 | or NULL if not known. |
c906108c SS |
20540 | This routine tries to keep line numbers from identical absolute and |
20541 | relative file names in a common subfile. | |
20542 | ||
20543 | Using the `list' example from the GDB testsuite, which resides in | |
20544 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20545 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20546 | ||
c5aa993b | 20547 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20548 | DW_AT_comp_dir: /compdir |
357e46e7 | 20549 | files.files[0].name: list0.h |
c5aa993b | 20550 | files.files[0].dir: /srcdir |
357e46e7 | 20551 | files.files[1].name: list0.c |
c5aa993b | 20552 | files.files[1].dir: /srcdir |
c906108c SS |
20553 | |
20554 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20555 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20556 | start_subfile will ensure that this happens provided that we pass the | |
20557 | concatenation of files.files[1].dir and files.files[1].name as the | |
20558 | subfile's name. */ | |
c906108c SS |
20559 | |
20560 | static void | |
804d2729 TT |
20561 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20562 | const char *dirname) | |
c906108c | 20563 | { |
43816ebc | 20564 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20565 | |
4d663531 | 20566 | /* In order not to lose the line information directory, |
4f1520fb FR |
20567 | we concatenate it to the filename when it makes sense. |
20568 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20569 | information): ``The directory index is ignored for file names | |
20570 | that represent full path names''. Thus ignoring dirname in the | |
20571 | `else' branch below isn't an issue. */ | |
c906108c | 20572 | |
d5166ae1 | 20573 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20574 | { |
43816ebc TT |
20575 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20576 | filename = copy.get (); | |
d521ce57 | 20577 | } |
c906108c | 20578 | |
c24bdb02 | 20579 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20580 | } |
20581 | ||
804d2729 TT |
20582 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20583 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20584 | |
c24bdb02 KS |
20585 | struct compunit_symtab * |
20586 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20587 | CORE_ADDR low_pc) | |
f4dc4d17 | 20588 | { |
c24bdb02 | 20589 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20590 | |
c24bdb02 | 20591 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 20592 | (this->per_objfile->objfile, |
c24bdb02 | 20593 | name, comp_dir, language, low_pc)); |
93b8bea4 | 20594 | |
c24bdb02 | 20595 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20596 | |
c24bdb02 KS |
20597 | get_builder ()->record_debugformat ("DWARF 2"); |
20598 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20599 | |
c24bdb02 | 20600 | processing_has_namespace_info = false; |
43f3e411 | 20601 | |
c24bdb02 | 20602 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20603 | } |
20604 | ||
4c2df51b DJ |
20605 | static void |
20606 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20607 | struct dwarf2_cu *cu) |
4c2df51b | 20608 | { |
5e22e966 | 20609 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
20610 | struct comp_unit_head *cu_header = &cu->header; |
20611 | ||
4c2df51b DJ |
20612 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20613 | code here to turn a symbol with DW_AT_external and a | |
20614 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20615 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20616 | with some versions of binutils) where shared libraries could have | |
20617 | relocations against symbols in their debug information - the | |
20618 | minimal symbol would have the right address, but the debug info | |
20619 | would not. It's no longer necessary, because we will explicitly | |
20620 | apply relocations when we read in the debug information now. */ | |
20621 | ||
20622 | /* A DW_AT_location attribute with no contents indicates that a | |
20623 | variable has been optimized away. */ | |
4fc6c0d5 | 20624 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20625 | { |
f1e6e072 | 20626 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20627 | return; |
20628 | } | |
20629 | ||
20630 | /* Handle one degenerate form of location expression specially, to | |
20631 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20632 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20633 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20634 | |
4fc6c0d5 | 20635 | if (attr->form_is_block () |
3019eac3 DE |
20636 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20637 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20638 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20639 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20640 | && (DW_BLOCK (attr)->size |
20641 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20642 | { |
891d2f0b | 20643 | unsigned int dummy; |
4c2df51b | 20644 | |
3019eac3 | 20645 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20646 | SET_SYMBOL_VALUE_ADDRESS |
20647 | (sym, cu->header.read_address (objfile->obfd, | |
20648 | DW_BLOCK (attr)->data + 1, | |
20649 | &dummy)); | |
3019eac3 | 20650 | else |
38583298 TT |
20651 | SET_SYMBOL_VALUE_ADDRESS |
20652 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20653 | &dummy)); | |
f1e6e072 | 20654 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20655 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20656 | SET_SYMBOL_VALUE_ADDRESS |
20657 | (sym, | |
20658 | SYMBOL_VALUE_ADDRESS (sym) | |
20659 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20660 | return; |
20661 | } | |
20662 | ||
20663 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20664 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20665 | (i.e. when the value of a register or memory location is | |
20666 | referenced, or a thread-local block, etc.). Then again, it might | |
20667 | not be worthwhile. I'm assuming that it isn't unless performance | |
20668 | or memory numbers show me otherwise. */ | |
20669 | ||
f1e6e072 | 20670 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20671 | |
f1e6e072 | 20672 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20673 | cu->has_loclist = true; |
4c2df51b DJ |
20674 | } |
20675 | ||
c906108c SS |
20676 | /* Given a pointer to a DWARF information entry, figure out if we need |
20677 | to make a symbol table entry for it, and if so, create a new entry | |
20678 | and return a pointer to it. | |
20679 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20680 | used the passed type. |
20681 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20682 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20683 | |
20684 | static struct symbol * | |
5e2db402 TT |
20685 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20686 | struct symbol *space) | |
c906108c | 20687 | { |
5e22e966 | 20688 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 20689 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 20690 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20691 | struct symbol *sym = NULL; |
15d034d0 | 20692 | const char *name; |
c906108c SS |
20693 | struct attribute *attr = NULL; |
20694 | struct attribute *attr2 = NULL; | |
e142c38c | 20695 | CORE_ADDR baseaddr; |
e37fd15a SW |
20696 | struct pending **list_to_add = NULL; |
20697 | ||
edb3359d | 20698 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20699 | |
b3b3bada | 20700 | baseaddr = objfile->text_section_offset (); |
c906108c | 20701 | |
94af9270 | 20702 | name = dwarf2_name (die, cu); |
c906108c SS |
20703 | if (name) |
20704 | { | |
34eaf542 | 20705 | int suppress_add = 0; |
94af9270 | 20706 | |
34eaf542 TT |
20707 | if (space) |
20708 | sym = space; | |
20709 | else | |
8c14c3a3 | 20710 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 20711 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20712 | |
20713 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20714 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
20715 | /* Fortran does not have mangling standard and the mangling does differ |
20716 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
20717 | const char *physname |
20718 | = (cu->language == language_fortran | |
20719 | ? dwarf2_full_name (name, die, cu) | |
20720 | : dwarf2_physname (name, die, cu)); | |
20721 | const char *linkagename = dw2_linkage_name (die, cu); | |
20722 | ||
20723 | if (linkagename == nullptr || cu->language == language_ada) | |
20724 | sym->set_linkage_name (physname); | |
20725 | else | |
20726 | { | |
20727 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
20728 | sym->set_linkage_name (linkagename); | |
20729 | } | |
f55ee35c | 20730 | |
c906108c | 20731 | /* Default assumptions. |
c5aa993b | 20732 | Use the passed type or decode it from the die. */ |
176620f1 | 20733 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20734 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20735 | if (type != NULL) |
20736 | SYMBOL_TYPE (sym) = type; | |
20737 | else | |
e7c27a73 | 20738 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20739 | attr = dwarf2_attr (die, |
20740 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20741 | cu); | |
435d3d88 | 20742 | if (attr != nullptr) |
c906108c SS |
20743 | { |
20744 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20745 | } | |
cb1df416 | 20746 | |
edb3359d DJ |
20747 | attr = dwarf2_attr (die, |
20748 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20749 | cu); | |
435d3d88 | 20750 | if (attr != nullptr) |
cb1df416 | 20751 | { |
ecfb656c | 20752 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20753 | struct file_entry *fe; |
9a619af0 | 20754 | |
ecfb656c PA |
20755 | if (cu->line_header != NULL) |
20756 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20757 | else |
20758 | fe = NULL; | |
20759 | ||
20760 | if (fe == NULL) | |
b98664d3 | 20761 | complaint (_("file index out of range")); |
8c43009f PA |
20762 | else |
20763 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20764 | } |
20765 | ||
c906108c SS |
20766 | switch (die->tag) |
20767 | { | |
20768 | case DW_TAG_label: | |
e142c38c | 20769 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20770 | if (attr != nullptr) |
3e29f34a MR |
20771 | { |
20772 | CORE_ADDR addr; | |
20773 | ||
cd6c91b4 | 20774 | addr = attr->value_as_address (); |
3e29f34a | 20775 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20776 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20777 | } |
0f5238ed TT |
20778 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20779 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20780 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20781 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20782 | break; |
20783 | case DW_TAG_subprogram: | |
20784 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20785 | finish_block. */ | |
f1e6e072 | 20786 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20787 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20788 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20789 | || cu->language == language_ada |
20790 | || cu->language == language_fortran) | |
c906108c | 20791 | { |
2cfa0c8d | 20792 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20793 | Ada and Fortran subprograms, whether marked external or |
20794 | not, are always stored as a global symbol, because we want | |
20795 | to be able to access them globally. For instance, we want | |
20796 | to be able to break on a nested subprogram without having | |
20797 | to specify the context. */ | |
c24bdb02 | 20798 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20799 | } |
20800 | else | |
20801 | { | |
e37fd15a | 20802 | list_to_add = cu->list_in_scope; |
c906108c SS |
20803 | } |
20804 | break; | |
edb3359d DJ |
20805 | case DW_TAG_inlined_subroutine: |
20806 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20807 | finish_block. */ | |
f1e6e072 | 20808 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20809 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20810 | list_to_add = cu->list_in_scope; |
edb3359d | 20811 | break; |
34eaf542 TT |
20812 | case DW_TAG_template_value_param: |
20813 | suppress_add = 1; | |
20814 | /* Fall through. */ | |
72929c62 | 20815 | case DW_TAG_constant: |
c906108c | 20816 | case DW_TAG_variable: |
254e6b9e | 20817 | case DW_TAG_member: |
0963b4bd MS |
20818 | /* Compilation with minimal debug info may result in |
20819 | variables with missing type entries. Change the | |
20820 | misleading `void' type to something sensible. */ | |
78134374 | 20821 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 20822 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20823 | |
e142c38c | 20824 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20825 | /* In the case of DW_TAG_member, we should only be called for |
20826 | static const members. */ | |
20827 | if (die->tag == DW_TAG_member) | |
20828 | { | |
3863f96c DE |
20829 | /* dwarf2_add_field uses die_is_declaration, |
20830 | so we do the same. */ | |
254e6b9e DE |
20831 | gdb_assert (die_is_declaration (die, cu)); |
20832 | gdb_assert (attr); | |
20833 | } | |
435d3d88 | 20834 | if (attr != nullptr) |
c906108c | 20835 | { |
e7c27a73 | 20836 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20837 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20838 | if (!suppress_add) |
34eaf542 TT |
20839 | { |
20840 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20841 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20842 | else |
e37fd15a | 20843 | list_to_add = cu->list_in_scope; |
34eaf542 | 20844 | } |
c906108c SS |
20845 | break; |
20846 | } | |
e142c38c | 20847 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20848 | if (attr != nullptr) |
c906108c | 20849 | { |
e7c27a73 | 20850 | var_decode_location (attr, sym, cu); |
e142c38c | 20851 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20852 | |
20853 | /* Fortran explicitly imports any global symbols to the local | |
20854 | scope by DW_TAG_common_block. */ | |
20855 | if (cu->language == language_fortran && die->parent | |
20856 | && die->parent->tag == DW_TAG_common_block) | |
20857 | attr2 = NULL; | |
20858 | ||
caac4577 JG |
20859 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20860 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
5989a64e | 20861 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
20862 | { |
20863 | /* When a static variable is eliminated by the linker, | |
20864 | the corresponding debug information is not stripped | |
20865 | out, but the variable address is set to null; | |
20866 | do not add such variables into symbol table. */ | |
20867 | } | |
20868 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20869 | { |
4b610737 TT |
20870 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20871 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
5989a64e | 20872 | && dwarf2_per_objfile->per_bfd->can_copy) |
4b610737 TT |
20873 | { |
20874 | /* A global static variable might be subject to | |
20875 | copy relocation. We first check for a local | |
20876 | minsym, though, because maybe the symbol was | |
20877 | marked hidden, in which case this would not | |
20878 | apply. */ | |
20879 | bound_minimal_symbol found | |
20880 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20881 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20882 | if (found.minsym != nullptr) |
20883 | sym->maybe_copied = 1; | |
20884 | } | |
f55ee35c | 20885 | |
1c809c68 TT |
20886 | /* A variable with DW_AT_external is never static, |
20887 | but it may be block-scoped. */ | |
804d2729 | 20888 | list_to_add |
c24bdb02 KS |
20889 | = ((cu->list_in_scope |
20890 | == cu->get_builder ()->get_file_symbols ()) | |
20891 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20892 | : cu->list_in_scope); |
1c809c68 | 20893 | } |
c906108c | 20894 | else |
e37fd15a | 20895 | list_to_add = cu->list_in_scope; |
c906108c SS |
20896 | } |
20897 | else | |
20898 | { | |
20899 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20900 | If it is an external symbol and we have type information |
20901 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20902 | The address of the variable will then be determined from | |
20903 | the minimal symbol table whenever the variable is | |
20904 | referenced. */ | |
e142c38c | 20905 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20906 | |
20907 | /* Fortran explicitly imports any global symbols to the local | |
20908 | scope by DW_TAG_common_block. */ | |
20909 | if (cu->language == language_fortran && die->parent | |
20910 | && die->parent->tag == DW_TAG_common_block) | |
20911 | { | |
20912 | /* SYMBOL_CLASS doesn't matter here because | |
20913 | read_common_block is going to reset it. */ | |
20914 | if (!suppress_add) | |
20915 | list_to_add = cu->list_in_scope; | |
20916 | } | |
20917 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20918 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20919 | { |
0fe7935b DJ |
20920 | /* A variable with DW_AT_external is never static, but it |
20921 | may be block-scoped. */ | |
804d2729 | 20922 | list_to_add |
c24bdb02 KS |
20923 | = ((cu->list_in_scope |
20924 | == cu->get_builder ()->get_file_symbols ()) | |
20925 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20926 | : cu->list_in_scope); |
0fe7935b | 20927 | |
f1e6e072 | 20928 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20929 | } |
442ddf59 JK |
20930 | else if (!die_is_declaration (die, cu)) |
20931 | { | |
20932 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20933 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20934 | if (!suppress_add) |
20935 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20936 | } |
c906108c SS |
20937 | } |
20938 | break; | |
20939 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20940 | { |
20941 | /* If we are inside a function, mark this as an argument. If | |
20942 | not, we might be looking at an argument to an inlined function | |
20943 | when we do not have enough information to show inlined frames; | |
20944 | pretend it's a local variable in that case so that the user can | |
20945 | still see it. */ | |
804d2729 | 20946 | struct context_stack *curr |
c24bdb02 | 20947 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20948 | if (curr != nullptr && curr->name != nullptr) |
20949 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20950 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20951 | if (attr != nullptr) |
a60f3166 TT |
20952 | { |
20953 | var_decode_location (attr, sym, cu); | |
20954 | } | |
20955 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20956 | if (attr != nullptr) |
a60f3166 TT |
20957 | { |
20958 | dwarf2_const_value (attr, sym, cu); | |
20959 | } | |
f346a30d | 20960 | |
a60f3166 TT |
20961 | list_to_add = cu->list_in_scope; |
20962 | } | |
c906108c SS |
20963 | break; |
20964 | case DW_TAG_unspecified_parameters: | |
20965 | /* From varargs functions; gdb doesn't seem to have any | |
20966 | interest in this information, so just ignore it for now. | |
20967 | (FIXME?) */ | |
20968 | break; | |
34eaf542 TT |
20969 | case DW_TAG_template_type_param: |
20970 | suppress_add = 1; | |
20971 | /* Fall through. */ | |
c906108c | 20972 | case DW_TAG_class_type: |
680b30c7 | 20973 | case DW_TAG_interface_type: |
c906108c SS |
20974 | case DW_TAG_structure_type: |
20975 | case DW_TAG_union_type: | |
72019c9c | 20976 | case DW_TAG_set_type: |
c906108c | 20977 | case DW_TAG_enumeration_type: |
f1e6e072 | 20978 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20979 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20980 | |
63d06c5c | 20981 | { |
9c37b5ae | 20982 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20983 | really ever be static objects: otherwise, if you try |
20984 | to, say, break of a class's method and you're in a file | |
20985 | which doesn't mention that class, it won't work unless | |
20986 | the check for all static symbols in lookup_symbol_aux | |
20987 | saves you. See the OtherFileClass tests in | |
20988 | gdb.c++/namespace.exp. */ | |
20989 | ||
e37fd15a | 20990 | if (!suppress_add) |
34eaf542 | 20991 | { |
c24bdb02 | 20992 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20993 | list_to_add |
c24bdb02 | 20994 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20995 | && cu->language == language_cplus |
c24bdb02 | 20996 | ? builder->get_global_symbols () |
804d2729 | 20997 | : cu->list_in_scope); |
63d06c5c | 20998 | |
64382290 | 20999 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21000 | ... }" also defines a typedef for "foo". */ |
64382290 | 21001 | if (cu->language == language_cplus |
45280282 | 21002 | || cu->language == language_ada |
c44af4eb TT |
21003 | || cu->language == language_d |
21004 | || cu->language == language_rust) | |
64382290 TT |
21005 | { |
21006 | /* The symbol's name is already allocated along | |
21007 | with this objfile, so we don't need to | |
21008 | duplicate it for the type. */ | |
7d93a1e0 | 21009 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21010 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21011 | } |
63d06c5c DC |
21012 | } |
21013 | } | |
c906108c SS |
21014 | break; |
21015 | case DW_TAG_typedef: | |
f1e6e072 | 21016 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21017 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21018 | list_to_add = cu->list_in_scope; |
63d06c5c | 21019 | break; |
c906108c | 21020 | case DW_TAG_base_type: |
a02abb62 | 21021 | case DW_TAG_subrange_type: |
f1e6e072 | 21022 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21023 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21024 | list_to_add = cu->list_in_scope; |
c906108c SS |
21025 | break; |
21026 | case DW_TAG_enumerator: | |
e142c38c | 21027 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21028 | if (attr != nullptr) |
c906108c | 21029 | { |
e7c27a73 | 21030 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21031 | } |
63d06c5c DC |
21032 | { |
21033 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21034 | DW_TAG_class_type, etc. block. */ | |
21035 | ||
804d2729 | 21036 | list_to_add |
c24bdb02 | 21037 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21038 | && cu->language == language_cplus |
c24bdb02 | 21039 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21040 | : cu->list_in_scope); |
63d06c5c | 21041 | } |
c906108c | 21042 | break; |
74921315 | 21043 | case DW_TAG_imported_declaration: |
5c4e30ca | 21044 | case DW_TAG_namespace: |
f1e6e072 | 21045 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21046 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21047 | break; |
530e8392 KB |
21048 | case DW_TAG_module: |
21049 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21050 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21051 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21052 | break; |
4357ac6c | 21053 | case DW_TAG_common_block: |
f1e6e072 | 21054 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21055 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21056 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21057 | break; |
c906108c SS |
21058 | default: |
21059 | /* Not a tag we recognize. Hopefully we aren't processing | |
21060 | trash data, but since we must specifically ignore things | |
21061 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21062 | this point. */ |
b98664d3 | 21063 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21064 | dwarf_tag_name (die->tag)); |
c906108c SS |
21065 | break; |
21066 | } | |
df8a16a1 | 21067 | |
e37fd15a SW |
21068 | if (suppress_add) |
21069 | { | |
21070 | sym->hash_next = objfile->template_symbols; | |
21071 | objfile->template_symbols = sym; | |
21072 | list_to_add = NULL; | |
21073 | } | |
21074 | ||
21075 | if (list_to_add != NULL) | |
d3cb6808 | 21076 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21077 | |
df8a16a1 DJ |
21078 | /* For the benefit of old versions of GCC, check for anonymous |
21079 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21080 | if (!cu->processing_has_namespace_info |
94af9270 | 21081 | && cu->language == language_cplus) |
c24bdb02 | 21082 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21083 | } |
21084 | return (sym); | |
21085 | } | |
21086 | ||
98bfdba5 PA |
21087 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21088 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21089 | standard (v4) is not entirely clear about the meaning of using | |
21090 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21091 | wider than the data. The conclusion of a discussion on the DWARF | |
21092 | list was that this is unspecified. We choose to always zero-extend | |
21093 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21094 | |
98bfdba5 | 21095 | static gdb_byte * |
ff39bb5e | 21096 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21097 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21098 | { |
5e22e966 | 21099 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21100 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21101 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21102 | LONGEST l = DW_UNSND (attr); |
21103 | ||
21104 | if (bits < sizeof (*value) * 8) | |
21105 | { | |
21106 | l &= ((LONGEST) 1 << bits) - 1; | |
21107 | *value = l; | |
21108 | } | |
21109 | else if (bits == sizeof (*value) * 8) | |
21110 | *value = l; | |
21111 | else | |
21112 | { | |
224c3ddb | 21113 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21114 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21115 | return bytes; | |
21116 | } | |
21117 | ||
21118 | return NULL; | |
21119 | } | |
21120 | ||
21121 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21122 | the value does not fit in *VALUE, set *BYTES - either already | |
21123 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21124 | or, set *BATON, if we translated the constant to a location | |
21125 | expression. */ | |
21126 | ||
21127 | static void | |
ff39bb5e | 21128 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21129 | const char *name, struct obstack *obstack, |
21130 | struct dwarf2_cu *cu, | |
d521ce57 | 21131 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21132 | struct dwarf2_locexpr_baton **baton) |
21133 | { | |
5e22e966 | 21134 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21135 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21136 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21137 | struct dwarf_block *blk; |
98bfdba5 PA |
21138 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21139 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21140 | ||
21141 | *value = 0; | |
21142 | *bytes = NULL; | |
21143 | *baton = NULL; | |
c906108c SS |
21144 | |
21145 | switch (attr->form) | |
21146 | { | |
21147 | case DW_FORM_addr: | |
336d760d | 21148 | case DW_FORM_addrx: |
3019eac3 | 21149 | case DW_FORM_GNU_addr_index: |
ac56253d | 21150 | { |
ac56253d TT |
21151 | gdb_byte *data; |
21152 | ||
98bfdba5 PA |
21153 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21154 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21155 | cu_header->addr_size, |
98bfdba5 | 21156 | TYPE_LENGTH (type)); |
ac56253d TT |
21157 | /* Symbols of this form are reasonably rare, so we just |
21158 | piggyback on the existing location code rather than writing | |
21159 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21160 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21161 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21162 | (*baton)->per_cu = cu->per_cu; |
21163 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21164 | |
98bfdba5 | 21165 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21166 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21167 | (*baton)->data = data; |
ac56253d TT |
21168 | |
21169 | data[0] = DW_OP_addr; | |
21170 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21171 | byte_order, DW_ADDR (attr)); | |
21172 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21173 | } |
c906108c | 21174 | break; |
4ac36638 | 21175 | case DW_FORM_string: |
93b5768b | 21176 | case DW_FORM_strp: |
cf532bd1 | 21177 | case DW_FORM_strx: |
3019eac3 | 21178 | case DW_FORM_GNU_str_index: |
36586728 | 21179 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21180 | /* DW_STRING is already allocated on the objfile obstack, point |
21181 | directly to it. */ | |
d521ce57 | 21182 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21183 | break; |
c906108c SS |
21184 | case DW_FORM_block1: |
21185 | case DW_FORM_block2: | |
21186 | case DW_FORM_block4: | |
21187 | case DW_FORM_block: | |
2dc7f7b3 | 21188 | case DW_FORM_exprloc: |
0224619f | 21189 | case DW_FORM_data16: |
c906108c | 21190 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21191 | if (TYPE_LENGTH (type) != blk->size) |
21192 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21193 | TYPE_LENGTH (type)); | |
21194 | *bytes = blk->data; | |
c906108c | 21195 | break; |
2df3850c JM |
21196 | |
21197 | /* The DW_AT_const_value attributes are supposed to carry the | |
21198 | symbol's value "represented as it would be on the target | |
21199 | architecture." By the time we get here, it's already been | |
21200 | converted to host endianness, so we just need to sign- or | |
21201 | zero-extend it as appropriate. */ | |
21202 | case DW_FORM_data1: | |
3aef2284 | 21203 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21204 | break; |
c906108c | 21205 | case DW_FORM_data2: |
3aef2284 | 21206 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21207 | break; |
c906108c | 21208 | case DW_FORM_data4: |
3aef2284 | 21209 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21210 | break; |
c906108c | 21211 | case DW_FORM_data8: |
3aef2284 | 21212 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21213 | break; |
21214 | ||
c906108c | 21215 | case DW_FORM_sdata: |
663c44ac | 21216 | case DW_FORM_implicit_const: |
98bfdba5 | 21217 | *value = DW_SND (attr); |
2df3850c JM |
21218 | break; |
21219 | ||
c906108c | 21220 | case DW_FORM_udata: |
98bfdba5 | 21221 | *value = DW_UNSND (attr); |
c906108c | 21222 | break; |
2df3850c | 21223 | |
c906108c | 21224 | default: |
b98664d3 | 21225 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21226 | dwarf_form_name (attr->form)); |
98bfdba5 | 21227 | *value = 0; |
c906108c SS |
21228 | break; |
21229 | } | |
21230 | } | |
21231 | ||
2df3850c | 21232 | |
98bfdba5 PA |
21233 | /* Copy constant value from an attribute to a symbol. */ |
21234 | ||
2df3850c | 21235 | static void |
ff39bb5e | 21236 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21237 | struct dwarf2_cu *cu) |
2df3850c | 21238 | { |
5e22e966 | 21239 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21240 | LONGEST value; |
d521ce57 | 21241 | const gdb_byte *bytes; |
98bfdba5 | 21242 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21243 | |
98bfdba5 | 21244 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21245 | sym->print_name (), |
98bfdba5 PA |
21246 | &objfile->objfile_obstack, cu, |
21247 | &value, &bytes, &baton); | |
2df3850c | 21248 | |
98bfdba5 PA |
21249 | if (baton != NULL) |
21250 | { | |
98bfdba5 | 21251 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21252 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21253 | } |
21254 | else if (bytes != NULL) | |
21255 | { | |
21256 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21257 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21258 | } |
21259 | else | |
21260 | { | |
21261 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21262 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21263 | } |
2df3850c JM |
21264 | } |
21265 | ||
c906108c SS |
21266 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21267 | ||
21268 | static struct type * | |
e7c27a73 | 21269 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21270 | { |
c906108c | 21271 | struct attribute *type_attr; |
c906108c | 21272 | |
e142c38c | 21273 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21274 | if (!type_attr) |
21275 | { | |
5e22e966 | 21276 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21277 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21278 | return objfile_type (objfile)->builtin_void; |
c906108c | 21279 | } |
348e048f | 21280 | |
673bfd45 | 21281 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21282 | } |
21283 | ||
b4ba55a1 JB |
21284 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21285 | that allows to find parallel types through that information instead | |
21286 | of having to do expensive parallel lookups by type name. */ | |
21287 | ||
21288 | static int | |
21289 | need_gnat_info (struct dwarf2_cu *cu) | |
21290 | { | |
de4cb04a JB |
21291 | /* Assume that the Ada compiler was GNAT, which always produces |
21292 | the auxiliary information. */ | |
21293 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21294 | } |
21295 | ||
b4ba55a1 JB |
21296 | /* Return the auxiliary type of the die in question using its |
21297 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21298 | attribute is not present. */ | |
21299 | ||
21300 | static struct type * | |
21301 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21302 | { | |
b4ba55a1 | 21303 | struct attribute *type_attr; |
b4ba55a1 JB |
21304 | |
21305 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21306 | if (!type_attr) | |
21307 | return NULL; | |
21308 | ||
673bfd45 | 21309 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21310 | } |
21311 | ||
21312 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21313 | descriptive type accordingly. */ | |
21314 | ||
21315 | static void | |
21316 | set_descriptive_type (struct type *type, struct die_info *die, | |
21317 | struct dwarf2_cu *cu) | |
21318 | { | |
21319 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21320 | ||
21321 | if (descriptive_type) | |
21322 | { | |
21323 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21324 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21325 | } | |
21326 | } | |
21327 | ||
c906108c SS |
21328 | /* Return the containing type of the die in question using its |
21329 | DW_AT_containing_type attribute. */ | |
21330 | ||
21331 | static struct type * | |
e7c27a73 | 21332 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21333 | { |
c906108c | 21334 | struct attribute *type_attr; |
5e22e966 | 21335 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21336 | |
e142c38c | 21337 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21338 | if (!type_attr) |
21339 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21340 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21341 | |
673bfd45 | 21342 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21343 | } |
21344 | ||
ac9ec31b DE |
21345 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21346 | ||
21347 | static struct type * | |
21348 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21349 | { | |
5e22e966 | 21350 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b | 21351 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21352 | char *saved; |
ac9ec31b | 21353 | |
528e1572 SM |
21354 | std::string message |
21355 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21356 | objfile_name (objfile), | |
21357 | sect_offset_str (cu->header.sect_off), | |
21358 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21359 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21360 | |
19f392bc | 21361 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21362 | } |
21363 | ||
673bfd45 | 21364 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21365 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21366 | DW_AT_containing_type. | |
673bfd45 DE |
21367 | If there is no type substitute an error marker. */ |
21368 | ||
c906108c | 21369 | static struct type * |
ff39bb5e | 21370 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21371 | struct dwarf2_cu *cu) |
c906108c | 21372 | { |
5e22e966 | 21373 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 21374 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21375 | struct type *this_type; |
21376 | ||
ac9ec31b DE |
21377 | gdb_assert (attr->name == DW_AT_type |
21378 | || attr->name == DW_AT_GNAT_descriptive_type | |
21379 | || attr->name == DW_AT_containing_type); | |
21380 | ||
673bfd45 DE |
21381 | /* First see if we have it cached. */ |
21382 | ||
36586728 TT |
21383 | if (attr->form == DW_FORM_GNU_ref_alt) |
21384 | { | |
21385 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21386 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21387 | |
ed2dc618 SM |
21388 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21389 | dwarf2_per_objfile); | |
aa66c379 | 21390 | this_type = get_die_type_at_offset (sect_off, per_cu, dwarf2_per_objfile); |
36586728 | 21391 | } |
cd6c91b4 | 21392 | else if (attr->form_is_ref ()) |
673bfd45 | 21393 | { |
0826b30a | 21394 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21395 | |
aa66c379 SM |
21396 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, |
21397 | dwarf2_per_objfile); | |
673bfd45 | 21398 | } |
55f1336d | 21399 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21400 | { |
ac9ec31b | 21401 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21402 | |
ac9ec31b | 21403 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21404 | } |
21405 | else | |
21406 | { | |
b98664d3 | 21407 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21408 | " at %s [in module %s]"), |
21409 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21410 | objfile_name (objfile)); |
ac9ec31b | 21411 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21412 | } |
21413 | ||
21414 | /* If not cached we need to read it in. */ | |
21415 | ||
21416 | if (this_type == NULL) | |
21417 | { | |
ac9ec31b | 21418 | struct die_info *type_die = NULL; |
673bfd45 DE |
21419 | struct dwarf2_cu *type_cu = cu; |
21420 | ||
cd6c91b4 | 21421 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21422 | type_die = follow_die_ref (die, attr, &type_cu); |
21423 | if (type_die == NULL) | |
21424 | return build_error_marker_type (cu, die); | |
21425 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21426 | from an inter-CU reference and the type's CU got expanded before |
21427 | ours. */ | |
ac9ec31b | 21428 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21429 | } |
21430 | ||
21431 | /* If we still don't have a type use an error marker. */ | |
21432 | ||
21433 | if (this_type == NULL) | |
ac9ec31b | 21434 | return build_error_marker_type (cu, die); |
673bfd45 | 21435 | |
f792889a | 21436 | return this_type; |
c906108c SS |
21437 | } |
21438 | ||
673bfd45 DE |
21439 | /* Return the type in DIE, CU. |
21440 | Returns NULL for invalid types. | |
21441 | ||
02142a6c | 21442 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21443 | and only reads the die in if necessary. |
21444 | ||
21445 | NOTE: This can be called when reading in partial or full symbols. */ | |
21446 | ||
f792889a | 21447 | static struct type * |
e7c27a73 | 21448 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21449 | { |
f792889a DJ |
21450 | struct type *this_type; |
21451 | ||
21452 | this_type = get_die_type (die, cu); | |
21453 | if (this_type) | |
21454 | return this_type; | |
21455 | ||
673bfd45 DE |
21456 | return read_type_die_1 (die, cu); |
21457 | } | |
21458 | ||
21459 | /* Read the type in DIE, CU. | |
21460 | Returns NULL for invalid types. */ | |
21461 | ||
21462 | static struct type * | |
21463 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21464 | { | |
21465 | struct type *this_type = NULL; | |
21466 | ||
c906108c SS |
21467 | switch (die->tag) |
21468 | { | |
21469 | case DW_TAG_class_type: | |
680b30c7 | 21470 | case DW_TAG_interface_type: |
c906108c SS |
21471 | case DW_TAG_structure_type: |
21472 | case DW_TAG_union_type: | |
f792889a | 21473 | this_type = read_structure_type (die, cu); |
c906108c SS |
21474 | break; |
21475 | case DW_TAG_enumeration_type: | |
f792889a | 21476 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21477 | break; |
21478 | case DW_TAG_subprogram: | |
21479 | case DW_TAG_subroutine_type: | |
edb3359d | 21480 | case DW_TAG_inlined_subroutine: |
f792889a | 21481 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21482 | break; |
21483 | case DW_TAG_array_type: | |
f792889a | 21484 | this_type = read_array_type (die, cu); |
c906108c | 21485 | break; |
72019c9c | 21486 | case DW_TAG_set_type: |
f792889a | 21487 | this_type = read_set_type (die, cu); |
72019c9c | 21488 | break; |
c906108c | 21489 | case DW_TAG_pointer_type: |
f792889a | 21490 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21491 | break; |
21492 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21493 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21494 | break; |
21495 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21496 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21497 | break; | |
21498 | case DW_TAG_rvalue_reference_type: | |
21499 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21500 | break; |
21501 | case DW_TAG_const_type: | |
f792889a | 21502 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21503 | break; |
21504 | case DW_TAG_volatile_type: | |
f792889a | 21505 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21506 | break; |
06d66ee9 TT |
21507 | case DW_TAG_restrict_type: |
21508 | this_type = read_tag_restrict_type (die, cu); | |
21509 | break; | |
c906108c | 21510 | case DW_TAG_string_type: |
f792889a | 21511 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21512 | break; |
21513 | case DW_TAG_typedef: | |
f792889a | 21514 | this_type = read_typedef (die, cu); |
c906108c | 21515 | break; |
a02abb62 | 21516 | case DW_TAG_subrange_type: |
f792889a | 21517 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21518 | break; |
c906108c | 21519 | case DW_TAG_base_type: |
f792889a | 21520 | this_type = read_base_type (die, cu); |
c906108c | 21521 | break; |
81a17f79 | 21522 | case DW_TAG_unspecified_type: |
f792889a | 21523 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21524 | break; |
0114d602 DJ |
21525 | case DW_TAG_namespace: |
21526 | this_type = read_namespace_type (die, cu); | |
21527 | break; | |
f55ee35c JK |
21528 | case DW_TAG_module: |
21529 | this_type = read_module_type (die, cu); | |
21530 | break; | |
a2c2acaf MW |
21531 | case DW_TAG_atomic_type: |
21532 | this_type = read_tag_atomic_type (die, cu); | |
21533 | break; | |
c906108c | 21534 | default: |
b98664d3 | 21535 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21536 | dwarf_tag_name (die->tag)); |
c906108c SS |
21537 | break; |
21538 | } | |
63d06c5c | 21539 | |
f792889a | 21540 | return this_type; |
63d06c5c DC |
21541 | } |
21542 | ||
abc72ce4 DE |
21543 | /* See if we can figure out if the class lives in a namespace. We do |
21544 | this by looking for a member function; its demangled name will | |
21545 | contain namespace info, if there is any. | |
21546 | Return the computed name or NULL. | |
21547 | Space for the result is allocated on the objfile's obstack. | |
21548 | This is the full-die version of guess_partial_die_structure_name. | |
21549 | In this case we know DIE has no useful parent. */ | |
21550 | ||
43816ebc | 21551 | static const char * |
abc72ce4 DE |
21552 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21553 | { | |
21554 | struct die_info *spec_die; | |
21555 | struct dwarf2_cu *spec_cu; | |
21556 | struct die_info *child; | |
5e22e966 | 21557 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
21558 | |
21559 | spec_cu = cu; | |
21560 | spec_die = die_specification (die, &spec_cu); | |
21561 | if (spec_die != NULL) | |
21562 | { | |
21563 | die = spec_die; | |
21564 | cu = spec_cu; | |
21565 | } | |
21566 | ||
21567 | for (child = die->child; | |
21568 | child != NULL; | |
21569 | child = child->sibling) | |
21570 | { | |
21571 | if (child->tag == DW_TAG_subprogram) | |
21572 | { | |
73b9be8b | 21573 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21574 | |
7d45c7c3 | 21575 | if (linkage_name != NULL) |
abc72ce4 | 21576 | { |
43816ebc TT |
21577 | gdb::unique_xmalloc_ptr<char> actual_name |
21578 | (language_class_name_from_physname (cu->language_defn, | |
21579 | linkage_name)); | |
21580 | const char *name = NULL; | |
abc72ce4 DE |
21581 | |
21582 | if (actual_name != NULL) | |
21583 | { | |
15d034d0 | 21584 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21585 | |
21586 | if (die_name != NULL | |
43816ebc | 21587 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21588 | { |
21589 | /* Strip off the class name from the full name. | |
21590 | We want the prefix. */ | |
21591 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21592 | int actual_name_len = strlen (actual_name.get ()); |
21593 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21594 | |
21595 | /* Test for '::' as a sanity check. */ | |
21596 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21597 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21598 | name = obstack_strndup ( |
e3b94546 | 21599 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21600 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21601 | } |
21602 | } | |
abc72ce4 DE |
21603 | return name; |
21604 | } | |
21605 | } | |
21606 | } | |
21607 | ||
21608 | return NULL; | |
21609 | } | |
21610 | ||
96408a79 SA |
21611 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21612 | prefix part in such case. See | |
21613 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21614 | ||
a121b7c1 | 21615 | static const char * |
96408a79 SA |
21616 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21617 | { | |
21618 | struct attribute *attr; | |
e6a959d6 | 21619 | const char *base; |
96408a79 SA |
21620 | |
21621 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21622 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21623 | return NULL; | |
21624 | ||
7d45c7c3 | 21625 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21626 | return NULL; |
21627 | ||
73b9be8b | 21628 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21629 | if (attr == NULL || DW_STRING (attr) == NULL) |
21630 | return NULL; | |
21631 | ||
21632 | /* dwarf2_name had to be already called. */ | |
21633 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21634 | ||
21635 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21636 | base = strrchr (DW_STRING (attr), ':'); | |
21637 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21638 | return ""; | |
21639 | ||
5e22e966 | 21640 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
21641 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21642 | DW_STRING (attr), | |
21643 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21644 | } |
21645 | ||
fdde2d81 | 21646 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21647 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21648 | |
0114d602 DJ |
21649 | For example, if we're within the method foo() in the following |
21650 | code: | |
21651 | ||
21652 | namespace N { | |
21653 | class C { | |
21654 | void foo () { | |
21655 | } | |
21656 | }; | |
21657 | } | |
21658 | ||
21659 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21660 | |
0d5cff50 | 21661 | static const char * |
e142c38c | 21662 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21663 | { |
5e22e966 | 21664 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
0114d602 DJ |
21665 | struct die_info *parent, *spec_die; |
21666 | struct dwarf2_cu *spec_cu; | |
21667 | struct type *parent_type; | |
a121b7c1 | 21668 | const char *retval; |
63d06c5c | 21669 | |
9c37b5ae | 21670 | if (cu->language != language_cplus |
c44af4eb TT |
21671 | && cu->language != language_fortran && cu->language != language_d |
21672 | && cu->language != language_rust) | |
0114d602 DJ |
21673 | return ""; |
21674 | ||
96408a79 SA |
21675 | retval = anonymous_struct_prefix (die, cu); |
21676 | if (retval) | |
21677 | return retval; | |
21678 | ||
0114d602 DJ |
21679 | /* We have to be careful in the presence of DW_AT_specification. |
21680 | For example, with GCC 3.4, given the code | |
21681 | ||
21682 | namespace N { | |
21683 | void foo() { | |
21684 | // Definition of N::foo. | |
21685 | } | |
21686 | } | |
21687 | ||
21688 | then we'll have a tree of DIEs like this: | |
21689 | ||
21690 | 1: DW_TAG_compile_unit | |
21691 | 2: DW_TAG_namespace // N | |
21692 | 3: DW_TAG_subprogram // declaration of N::foo | |
21693 | 4: DW_TAG_subprogram // definition of N::foo | |
21694 | DW_AT_specification // refers to die #3 | |
21695 | ||
21696 | Thus, when processing die #4, we have to pretend that we're in | |
21697 | the context of its DW_AT_specification, namely the contex of die | |
21698 | #3. */ | |
21699 | spec_cu = cu; | |
21700 | spec_die = die_specification (die, &spec_cu); | |
21701 | if (spec_die == NULL) | |
21702 | parent = die->parent; | |
21703 | else | |
63d06c5c | 21704 | { |
0114d602 DJ |
21705 | parent = spec_die->parent; |
21706 | cu = spec_cu; | |
63d06c5c | 21707 | } |
0114d602 DJ |
21708 | |
21709 | if (parent == NULL) | |
21710 | return ""; | |
98bfdba5 PA |
21711 | else if (parent->building_fullname) |
21712 | { | |
21713 | const char *name; | |
21714 | const char *parent_name; | |
21715 | ||
21716 | /* It has been seen on RealView 2.2 built binaries, | |
21717 | DW_TAG_template_type_param types actually _defined_ as | |
21718 | children of the parent class: | |
21719 | ||
21720 | enum E {}; | |
21721 | template class <class Enum> Class{}; | |
21722 | Class<enum E> class_e; | |
21723 | ||
21724 | 1: DW_TAG_class_type (Class) | |
21725 | 2: DW_TAG_enumeration_type (E) | |
21726 | 3: DW_TAG_enumerator (enum1:0) | |
21727 | 3: DW_TAG_enumerator (enum2:1) | |
21728 | ... | |
21729 | 2: DW_TAG_template_type_param | |
21730 | DW_AT_type DW_FORM_ref_udata (E) | |
21731 | ||
21732 | Besides being broken debug info, it can put GDB into an | |
21733 | infinite loop. Consider: | |
21734 | ||
21735 | When we're building the full name for Class<E>, we'll start | |
21736 | at Class, and go look over its template type parameters, | |
21737 | finding E. We'll then try to build the full name of E, and | |
21738 | reach here. We're now trying to build the full name of E, | |
21739 | and look over the parent DIE for containing scope. In the | |
21740 | broken case, if we followed the parent DIE of E, we'd again | |
21741 | find Class, and once again go look at its template type | |
21742 | arguments, etc., etc. Simply don't consider such parent die | |
21743 | as source-level parent of this die (it can't be, the language | |
21744 | doesn't allow it), and break the loop here. */ | |
21745 | name = dwarf2_name (die, cu); | |
21746 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21747 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21748 | name ? name : "<unknown>", |
21749 | parent_name ? parent_name : "<unknown>"); | |
21750 | return ""; | |
21751 | } | |
63d06c5c | 21752 | else |
0114d602 DJ |
21753 | switch (parent->tag) |
21754 | { | |
63d06c5c | 21755 | case DW_TAG_namespace: |
0114d602 | 21756 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21757 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21758 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21759 | Work around this problem here. */ | |
21760 | if (cu->language == language_cplus | |
7d93a1e0 | 21761 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 21762 | return ""; |
0114d602 | 21763 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 21764 | return parent_type->name (); |
63d06c5c | 21765 | case DW_TAG_class_type: |
680b30c7 | 21766 | case DW_TAG_interface_type: |
63d06c5c | 21767 | case DW_TAG_structure_type: |
0114d602 | 21768 | case DW_TAG_union_type: |
f55ee35c | 21769 | case DW_TAG_module: |
0114d602 | 21770 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
21771 | if (parent_type->name () != NULL) |
21772 | return parent_type->name (); | |
0114d602 DJ |
21773 | else |
21774 | /* An anonymous structure is only allowed non-static data | |
21775 | members; no typedefs, no member functions, et cetera. | |
21776 | So it does not need a prefix. */ | |
21777 | return ""; | |
abc72ce4 | 21778 | case DW_TAG_compile_unit: |
95554aad | 21779 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21780 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21781 | if (cu->language == language_cplus | |
5989a64e | 21782 | && !dwarf2_per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
21783 | && die->child != NULL |
21784 | && (die->tag == DW_TAG_class_type | |
21785 | || die->tag == DW_TAG_structure_type | |
21786 | || die->tag == DW_TAG_union_type)) | |
21787 | { | |
43816ebc | 21788 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21789 | if (name != NULL) |
21790 | return name; | |
21791 | } | |
21792 | return ""; | |
0a4b0913 AB |
21793 | case DW_TAG_subprogram: |
21794 | /* Nested subroutines in Fortran get a prefix with the name | |
21795 | of the parent's subroutine. */ | |
21796 | if (cu->language == language_fortran) | |
21797 | { | |
21798 | if ((die->tag == DW_TAG_subprogram) | |
21799 | && (dwarf2_name (parent, cu) != NULL)) | |
21800 | return dwarf2_name (parent, cu); | |
21801 | } | |
21802 | return determine_prefix (parent, cu); | |
3d567982 TT |
21803 | case DW_TAG_enumeration_type: |
21804 | parent_type = read_type_die (parent, cu); | |
21805 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21806 | { | |
7d93a1e0 SM |
21807 | if (parent_type->name () != NULL) |
21808 | return parent_type->name (); | |
3d567982 TT |
21809 | return ""; |
21810 | } | |
21811 | /* Fall through. */ | |
63d06c5c | 21812 | default: |
8176b9b8 | 21813 | return determine_prefix (parent, cu); |
63d06c5c | 21814 | } |
63d06c5c DC |
21815 | } |
21816 | ||
3e43a32a MS |
21817 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21818 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21819 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21820 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21821 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21822 | |
f55ee35c | 21823 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21824 | |
21825 | static char * | |
f55ee35c JK |
21826 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21827 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21828 | { |
f55ee35c | 21829 | const char *lead = ""; |
5c315b68 | 21830 | const char *sep; |
63d06c5c | 21831 | |
3e43a32a MS |
21832 | if (suffix == NULL || suffix[0] == '\0' |
21833 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21834 | sep = ""; |
45280282 IB |
21835 | else if (cu->language == language_d) |
21836 | { | |
21837 | /* For D, the 'main' function could be defined in any module, but it | |
21838 | should never be prefixed. */ | |
21839 | if (strcmp (suffix, "D main") == 0) | |
21840 | { | |
21841 | prefix = ""; | |
21842 | sep = ""; | |
21843 | } | |
21844 | else | |
21845 | sep = "."; | |
21846 | } | |
f55ee35c JK |
21847 | else if (cu->language == language_fortran && physname) |
21848 | { | |
21849 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21850 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21851 | ||
21852 | lead = "__"; | |
21853 | sep = "_MOD_"; | |
21854 | } | |
987504bb JJ |
21855 | else |
21856 | sep = "::"; | |
63d06c5c | 21857 | |
6dd47d34 DE |
21858 | if (prefix == NULL) |
21859 | prefix = ""; | |
21860 | if (suffix == NULL) | |
21861 | suffix = ""; | |
21862 | ||
987504bb JJ |
21863 | if (obs == NULL) |
21864 | { | |
3e43a32a | 21865 | char *retval |
224c3ddb SM |
21866 | = ((char *) |
21867 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21868 | |
f55ee35c JK |
21869 | strcpy (retval, lead); |
21870 | strcat (retval, prefix); | |
6dd47d34 DE |
21871 | strcat (retval, sep); |
21872 | strcat (retval, suffix); | |
63d06c5c DC |
21873 | return retval; |
21874 | } | |
987504bb JJ |
21875 | else |
21876 | { | |
21877 | /* We have an obstack. */ | |
f55ee35c | 21878 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21879 | } |
63d06c5c DC |
21880 | } |
21881 | ||
71c25dea TT |
21882 | /* Get name of a die, return NULL if not found. */ |
21883 | ||
15d034d0 TT |
21884 | static const char * |
21885 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21886 | struct objfile *objfile) |
71c25dea TT |
21887 | { |
21888 | if (name && cu->language == language_cplus) | |
21889 | { | |
596dc4ad TT |
21890 | gdb::unique_xmalloc_ptr<char> canon_name |
21891 | = cp_canonicalize_string (name); | |
71c25dea | 21892 | |
596dc4ad TT |
21893 | if (canon_name != nullptr) |
21894 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
21895 | } |
21896 | ||
21897 | return name; | |
c906108c SS |
21898 | } |
21899 | ||
96553a0c DE |
21900 | /* Get name of a die, return NULL if not found. |
21901 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21902 | |
15d034d0 | 21903 | static const char * |
e142c38c | 21904 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21905 | { |
21906 | struct attribute *attr; | |
5e22e966 | 21907 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 21908 | |
e142c38c | 21909 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21910 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21911 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21912 | && die->tag != DW_TAG_class_type |
21913 | && die->tag != DW_TAG_interface_type | |
21914 | && die->tag != DW_TAG_structure_type | |
21915 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21916 | return NULL; |
21917 | ||
21918 | switch (die->tag) | |
21919 | { | |
21920 | case DW_TAG_compile_unit: | |
95554aad | 21921 | case DW_TAG_partial_unit: |
71c25dea TT |
21922 | /* Compilation units have a DW_AT_name that is a filename, not |
21923 | a source language identifier. */ | |
21924 | case DW_TAG_enumeration_type: | |
21925 | case DW_TAG_enumerator: | |
21926 | /* These tags always have simple identifiers already; no need | |
21927 | to canonicalize them. */ | |
21928 | return DW_STRING (attr); | |
907af001 | 21929 | |
96553a0c DE |
21930 | case DW_TAG_namespace: |
21931 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21932 | return DW_STRING (attr); | |
21933 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21934 | ||
907af001 UW |
21935 | case DW_TAG_class_type: |
21936 | case DW_TAG_interface_type: | |
21937 | case DW_TAG_structure_type: | |
21938 | case DW_TAG_union_type: | |
21939 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21940 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21941 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21942 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21943 | if (attr && DW_STRING (attr) |
61012eef GB |
21944 | && (startswith (DW_STRING (attr), "._") |
21945 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21946 | return NULL; |
53832f31 TT |
21947 | |
21948 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21949 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21950 | if (!attr || DW_STRING (attr) == NULL) | |
21951 | { | |
73b9be8b | 21952 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21953 | if (attr == NULL || DW_STRING (attr) == NULL) |
21954 | return NULL; | |
21955 | ||
df5c6c50 JK |
21956 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21957 | call for the same DIE. */ | |
21958 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21959 | { |
43816ebc TT |
21960 | gdb::unique_xmalloc_ptr<char> demangled |
21961 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21962 | if (demangled == nullptr) |
21963 | return nullptr; | |
43816ebc | 21964 | |
be1e3d3e | 21965 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21966 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21967 | } |
67430cd0 TT |
21968 | |
21969 | /* Strip any leading namespaces/classes, keep only the base name. | |
21970 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21971 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21972 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21973 | return &base[1]; | |
21974 | else | |
21975 | return DW_STRING (attr); | |
53832f31 | 21976 | } |
907af001 UW |
21977 | break; |
21978 | ||
71c25dea | 21979 | default: |
907af001 UW |
21980 | break; |
21981 | } | |
21982 | ||
21983 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21984 | { | |
be1e3d3e TT |
21985 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
21986 | objfile); | |
907af001 | 21987 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21988 | } |
907af001 | 21989 | return DW_STRING (attr); |
9219021c DC |
21990 | } |
21991 | ||
21992 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21993 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21994 | containing the return value on output. */ | |
9219021c DC |
21995 | |
21996 | static struct die_info * | |
f2f0e013 | 21997 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21998 | { |
21999 | struct attribute *attr; | |
9219021c | 22000 | |
f2f0e013 | 22001 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22002 | if (attr == NULL) |
22003 | return NULL; | |
22004 | ||
f2f0e013 | 22005 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22006 | } |
22007 | ||
f9aca02d | 22008 | static void |
d97bc12b | 22009 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22010 | { |
22011 | unsigned int i; | |
22012 | ||
d97bc12b | 22013 | print_spaces (indent, f); |
9d8780f0 | 22014 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22015 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22016 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22017 | |
22018 | if (die->parent != NULL) | |
22019 | { | |
22020 | print_spaces (indent, f); | |
9d8780f0 SM |
22021 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22022 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22023 | } |
22024 | ||
22025 | print_spaces (indent, f); | |
22026 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22027 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22028 | |
d97bc12b DE |
22029 | print_spaces (indent, f); |
22030 | fprintf_unfiltered (f, " attributes:\n"); | |
22031 | ||
c906108c SS |
22032 | for (i = 0; i < die->num_attrs; ++i) |
22033 | { | |
d97bc12b DE |
22034 | print_spaces (indent, f); |
22035 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22036 | dwarf_attr_name (die->attrs[i].name), |
22037 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22038 | |
c906108c SS |
22039 | switch (die->attrs[i].form) |
22040 | { | |
c906108c | 22041 | case DW_FORM_addr: |
336d760d | 22042 | case DW_FORM_addrx: |
3019eac3 | 22043 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22044 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22045 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22046 | break; |
22047 | case DW_FORM_block2: | |
22048 | case DW_FORM_block4: | |
22049 | case DW_FORM_block: | |
22050 | case DW_FORM_block1: | |
56eb65bd SP |
22051 | fprintf_unfiltered (f, "block: size %s", |
22052 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22053 | break; |
2dc7f7b3 | 22054 | case DW_FORM_exprloc: |
56eb65bd SP |
22055 | fprintf_unfiltered (f, "expression: size %s", |
22056 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22057 | break; |
0224619f JK |
22058 | case DW_FORM_data16: |
22059 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22060 | break; | |
4568ecf9 DE |
22061 | case DW_FORM_ref_addr: |
22062 | fprintf_unfiltered (f, "ref address: "); | |
22063 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22064 | break; | |
36586728 TT |
22065 | case DW_FORM_GNU_ref_alt: |
22066 | fprintf_unfiltered (f, "alt ref address: "); | |
22067 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22068 | break; | |
10b3939b DJ |
22069 | case DW_FORM_ref1: |
22070 | case DW_FORM_ref2: | |
22071 | case DW_FORM_ref4: | |
4568ecf9 DE |
22072 | case DW_FORM_ref8: |
22073 | case DW_FORM_ref_udata: | |
d97bc12b | 22074 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22075 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22076 | break; |
c906108c SS |
22077 | case DW_FORM_data1: |
22078 | case DW_FORM_data2: | |
22079 | case DW_FORM_data4: | |
ce5d95e1 | 22080 | case DW_FORM_data8: |
c906108c SS |
22081 | case DW_FORM_udata: |
22082 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22083 | fprintf_unfiltered (f, "constant: %s", |
22084 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22085 | break; |
2dc7f7b3 TT |
22086 | case DW_FORM_sec_offset: |
22087 | fprintf_unfiltered (f, "section offset: %s", | |
22088 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22089 | break; | |
55f1336d | 22090 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22091 | fprintf_unfiltered (f, "signature: %s", |
22092 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22093 | break; |
c906108c | 22094 | case DW_FORM_string: |
4bdf3d34 | 22095 | case DW_FORM_strp: |
43988095 | 22096 | case DW_FORM_line_strp: |
cf532bd1 | 22097 | case DW_FORM_strx: |
3019eac3 | 22098 | case DW_FORM_GNU_str_index: |
36586728 | 22099 | case DW_FORM_GNU_strp_alt: |
8285870a | 22100 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22101 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22102 | ? DW_STRING (&die->attrs[i]) : "", |
22103 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22104 | break; |
22105 | case DW_FORM_flag: | |
22106 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22107 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22108 | else |
d97bc12b | 22109 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22110 | break; |
2dc7f7b3 TT |
22111 | case DW_FORM_flag_present: |
22112 | fprintf_unfiltered (f, "flag: TRUE"); | |
22113 | break; | |
a8329558 | 22114 | case DW_FORM_indirect: |
0963b4bd MS |
22115 | /* The reader will have reduced the indirect form to |
22116 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22117 | fprintf_unfiltered (f, |
3e43a32a | 22118 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22119 | break; |
663c44ac JK |
22120 | case DW_FORM_implicit_const: |
22121 | fprintf_unfiltered (f, "constant: %s", | |
22122 | plongest (DW_SND (&die->attrs[i]))); | |
22123 | break; | |
c906108c | 22124 | default: |
d97bc12b | 22125 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22126 | die->attrs[i].form); |
d97bc12b | 22127 | break; |
c906108c | 22128 | } |
d97bc12b | 22129 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22130 | } |
22131 | } | |
22132 | ||
f9aca02d | 22133 | static void |
d97bc12b | 22134 | dump_die_for_error (struct die_info *die) |
c906108c | 22135 | { |
d97bc12b DE |
22136 | dump_die_shallow (gdb_stderr, 0, die); |
22137 | } | |
22138 | ||
22139 | static void | |
22140 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22141 | { | |
22142 | int indent = level * 4; | |
22143 | ||
22144 | gdb_assert (die != NULL); | |
22145 | ||
22146 | if (level >= max_level) | |
22147 | return; | |
22148 | ||
22149 | dump_die_shallow (f, indent, die); | |
22150 | ||
22151 | if (die->child != NULL) | |
c906108c | 22152 | { |
d97bc12b DE |
22153 | print_spaces (indent, f); |
22154 | fprintf_unfiltered (f, " Children:"); | |
22155 | if (level + 1 < max_level) | |
22156 | { | |
22157 | fprintf_unfiltered (f, "\n"); | |
22158 | dump_die_1 (f, level + 1, max_level, die->child); | |
22159 | } | |
22160 | else | |
22161 | { | |
3e43a32a MS |
22162 | fprintf_unfiltered (f, |
22163 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22164 | } |
22165 | } | |
22166 | ||
22167 | if (die->sibling != NULL && level > 0) | |
22168 | { | |
22169 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22170 | } |
22171 | } | |
22172 | ||
d97bc12b DE |
22173 | /* This is called from the pdie macro in gdbinit.in. |
22174 | It's not static so gcc will keep a copy callable from gdb. */ | |
22175 | ||
22176 | void | |
22177 | dump_die (struct die_info *die, int max_level) | |
22178 | { | |
22179 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22180 | } | |
22181 | ||
f9aca02d | 22182 | static void |
51545339 | 22183 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22184 | { |
51545339 | 22185 | void **slot; |
c906108c | 22186 | |
9c541725 PA |
22187 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22188 | to_underlying (die->sect_off), | |
b64f50a1 | 22189 | INSERT); |
51545339 DJ |
22190 | |
22191 | *slot = die; | |
c906108c SS |
22192 | } |
22193 | ||
348e048f DE |
22194 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22195 | On entry *REF_CU is the CU of SRC_DIE. | |
22196 | On exit *REF_CU is the CU of the result. */ | |
22197 | ||
22198 | static struct die_info * | |
ff39bb5e | 22199 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22200 | struct dwarf2_cu **ref_cu) |
22201 | { | |
22202 | struct die_info *die; | |
22203 | ||
cd6c91b4 | 22204 | if (attr->form_is_ref ()) |
348e048f | 22205 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22206 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22207 | die = follow_die_sig (src_die, attr, ref_cu); |
22208 | else | |
22209 | { | |
22210 | dump_die_for_error (src_die); | |
22211 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22212 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22213 | } |
22214 | ||
22215 | return die; | |
03dd20cc DJ |
22216 | } |
22217 | ||
5c631832 | 22218 | /* Follow reference OFFSET. |
673bfd45 DE |
22219 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22220 | On exit *REF_CU is the CU of the result. | |
22221 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22222 | |
f9aca02d | 22223 | static struct die_info * |
9c541725 | 22224 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22225 | struct dwarf2_cu **ref_cu) |
c906108c | 22226 | { |
10b3939b | 22227 | struct die_info temp_die; |
f2f0e013 | 22228 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
5e22e966 | 22229 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
10b3939b | 22230 | |
348e048f DE |
22231 | gdb_assert (cu->per_cu != NULL); |
22232 | ||
98bfdba5 PA |
22233 | target_cu = cu; |
22234 | ||
3019eac3 | 22235 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22236 | { |
22237 | /* .debug_types CUs cannot reference anything outside their CU. | |
22238 | If they need to, they have to reference a signatured type via | |
55f1336d | 22239 | DW_FORM_ref_sig8. */ |
4057dfde | 22240 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22241 | return NULL; |
348e048f | 22242 | } |
36586728 | 22243 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22244 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22245 | { |
22246 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22247 | |
9c541725 | 22248 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22249 | dwarf2_per_objfile); |
03dd20cc DJ |
22250 | |
22251 | /* If necessary, add it to the queue and load its DIEs. */ | |
120ce1b5 | 22252 | if (maybe_queue_comp_unit (cu, per_cu, dwarf2_per_objfile, cu->language)) |
ab432490 | 22253 | load_full_comp_unit (per_cu, dwarf2_per_objfile, false, cu->language); |
03dd20cc | 22254 | |
7188ed02 | 22255 | target_cu = dwarf2_per_objfile->get_cu (per_cu); |
10b3939b | 22256 | } |
98bfdba5 PA |
22257 | else if (cu->dies == NULL) |
22258 | { | |
22259 | /* We're loading full DIEs during partial symbol reading. */ | |
5989a64e | 22260 | gdb_assert (dwarf2_per_objfile->per_bfd->reading_partial_symbols); |
ab432490 SM |
22261 | load_full_comp_unit (cu->per_cu, dwarf2_per_objfile, false, |
22262 | language_minimal); | |
98bfdba5 | 22263 | } |
c906108c | 22264 | |
f2f0e013 | 22265 | *ref_cu = target_cu; |
9c541725 | 22266 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22267 | |
22268 | if (target_cu != cu) | |
22269 | target_cu->ancestor = cu; | |
22270 | ||
9a3c8263 | 22271 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22272 | &temp_die, |
22273 | to_underlying (sect_off)); | |
5c631832 | 22274 | } |
10b3939b | 22275 | |
5c631832 JK |
22276 | /* Follow reference attribute ATTR of SRC_DIE. |
22277 | On entry *REF_CU is the CU of SRC_DIE. | |
22278 | On exit *REF_CU is the CU of the result. */ | |
22279 | ||
22280 | static struct die_info * | |
ff39bb5e | 22281 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22282 | struct dwarf2_cu **ref_cu) |
22283 | { | |
0826b30a | 22284 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22285 | struct dwarf2_cu *cu = *ref_cu; |
22286 | struct die_info *die; | |
22287 | ||
9c541725 | 22288 | die = follow_die_offset (sect_off, |
36586728 TT |
22289 | (attr->form == DW_FORM_GNU_ref_alt |
22290 | || cu->per_cu->is_dwz), | |
22291 | ref_cu); | |
5c631832 | 22292 | if (!die) |
9d8780f0 SM |
22293 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22294 | "at %s [in module %s]"), | |
22295 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22296 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22297 | |
5c631832 JK |
22298 | return die; |
22299 | } | |
22300 | ||
d4c9a4f8 | 22301 | /* See read.h. */ |
5c631832 JK |
22302 | |
22303 | struct dwarf2_locexpr_baton | |
9c541725 | 22304 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22305 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22306 | dwarf2_per_objfile *dwarf2_per_objfile, |
8b9737bf | 22307 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22308 | void *baton, bool resolve_abstract_p) |
5c631832 | 22309 | { |
5c631832 JK |
22310 | struct die_info *die; |
22311 | struct attribute *attr; | |
22312 | struct dwarf2_locexpr_baton retval; | |
12359b5e | 22313 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8cf6f0b1 | 22314 | |
7188ed02 | 22315 | dwarf2_cu *cu = dwarf2_per_objfile->get_cu (per_cu); |
1b555f17 SM |
22316 | if (cu == nullptr) |
22317 | cu = load_cu (per_cu, dwarf2_per_objfile, false); | |
22318 | ||
22319 | if (cu == nullptr) | |
cc12ce38 DE |
22320 | { |
22321 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22322 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22323 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22324 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22325 | } |
918dd910 | 22326 | |
9c541725 | 22327 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22328 | if (!die) |
9d8780f0 SM |
22329 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22330 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22331 | |
22332 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22333 | if (!attr && resolve_abstract_p |
5989a64e SM |
22334 | && (dwarf2_per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
22335 | != dwarf2_per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 TV |
22336 | { |
22337 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22338 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22339 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22340 | |
3360b6e7 | 22341 | for (const auto &cand_off |
5989a64e | 22342 | : dwarf2_per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 22343 | { |
3360b6e7 TV |
22344 | struct dwarf2_cu *cand_cu = cu; |
22345 | struct die_info *cand | |
22346 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22347 | if (!cand | |
22348 | || !cand->parent | |
e4a62c65 TV |
22349 | || cand->parent->tag != DW_TAG_subprogram) |
22350 | continue; | |
22351 | ||
22352 | CORE_ADDR pc_low, pc_high; | |
22353 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22354 | if (pc_low == ((CORE_ADDR) -1)) |
22355 | continue; | |
22356 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22357 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22358 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22359 | continue; |
22360 | ||
22361 | die = cand; | |
22362 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22363 | break; | |
22364 | } | |
22365 | } | |
22366 | ||
5c631832 JK |
22367 | if (!attr) |
22368 | { | |
e103e986 JK |
22369 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22370 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22371 | |
e103e986 | 22372 | retval.data = NULL; |
5c631832 JK |
22373 | retval.size = 0; |
22374 | } | |
cd6c91b4 | 22375 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22376 | { |
22377 | struct dwarf2_loclist_baton loclist_baton; | |
22378 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22379 | size_t size; | |
22380 | ||
22381 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22382 | ||
22383 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22384 | &size, pc); | |
22385 | retval.size = size; | |
22386 | } | |
5c631832 JK |
22387 | else |
22388 | { | |
4fc6c0d5 | 22389 | if (!attr->form_is_block ()) |
9d8780f0 | 22390 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22391 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22392 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22393 | |
22394 | retval.data = DW_BLOCK (attr)->data; | |
22395 | retval.size = DW_BLOCK (attr)->size; | |
22396 | } | |
a50264ba | 22397 | retval.per_objfile = dwarf2_per_objfile; |
5c631832 | 22398 | retval.per_cu = cu->per_cu; |
918dd910 | 22399 | |
7188ed02 | 22400 | dwarf2_per_objfile->age_comp_units (); |
918dd910 | 22401 | |
5c631832 | 22402 | return retval; |
348e048f DE |
22403 | } |
22404 | ||
d4c9a4f8 | 22405 | /* See read.h. */ |
8b9737bf TT |
22406 | |
22407 | struct dwarf2_locexpr_baton | |
22408 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22409 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22410 | dwarf2_per_objfile *per_objfile, |
8b9737bf TT |
22411 | CORE_ADDR (*get_frame_pc) (void *baton), |
22412 | void *baton) | |
22413 | { | |
9c541725 | 22414 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22415 | |
14095eb3 SM |
22416 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
22417 | get_frame_pc, baton); | |
8b9737bf TT |
22418 | } |
22419 | ||
b6807d98 TT |
22420 | /* Write a constant of a given type as target-ordered bytes into |
22421 | OBSTACK. */ | |
22422 | ||
22423 | static const gdb_byte * | |
22424 | write_constant_as_bytes (struct obstack *obstack, | |
22425 | enum bfd_endian byte_order, | |
22426 | struct type *type, | |
22427 | ULONGEST value, | |
22428 | LONGEST *len) | |
22429 | { | |
22430 | gdb_byte *result; | |
22431 | ||
22432 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22433 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22434 | store_unsigned_integer (result, *len, byte_order, value); |
22435 | ||
22436 | return result; | |
22437 | } | |
22438 | ||
d4c9a4f8 | 22439 | /* See read.h. */ |
b6807d98 TT |
22440 | |
22441 | const gdb_byte * | |
9c541725 | 22442 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 22443 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 22444 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 22445 | obstack *obstack, |
b6807d98 TT |
22446 | LONGEST *len) |
22447 | { | |
b6807d98 TT |
22448 | struct die_info *die; |
22449 | struct attribute *attr; | |
22450 | const gdb_byte *result = NULL; | |
22451 | struct type *type; | |
22452 | LONGEST value; | |
22453 | enum bfd_endian byte_order; | |
14095eb3 | 22454 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 22455 | |
7188ed02 | 22456 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22457 | if (cu == nullptr) |
22458 | cu = load_cu (per_cu, per_objfile, false); | |
22459 | ||
22460 | if (cu == nullptr) | |
cc12ce38 DE |
22461 | { |
22462 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22463 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22464 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22465 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22466 | } |
b6807d98 | 22467 | |
9c541725 | 22468 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22469 | if (!die) |
9d8780f0 SM |
22470 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22471 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22472 | |
22473 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22474 | if (attr == NULL) | |
22475 | return NULL; | |
22476 | ||
e3b94546 | 22477 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22478 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22479 | ||
22480 | switch (attr->form) | |
22481 | { | |
22482 | case DW_FORM_addr: | |
336d760d | 22483 | case DW_FORM_addrx: |
b6807d98 TT |
22484 | case DW_FORM_GNU_addr_index: |
22485 | { | |
22486 | gdb_byte *tem; | |
22487 | ||
22488 | *len = cu->header.addr_size; | |
224c3ddb | 22489 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22490 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22491 | result = tem; | |
22492 | } | |
22493 | break; | |
22494 | case DW_FORM_string: | |
22495 | case DW_FORM_strp: | |
cf532bd1 | 22496 | case DW_FORM_strx: |
b6807d98 TT |
22497 | case DW_FORM_GNU_str_index: |
22498 | case DW_FORM_GNU_strp_alt: | |
22499 | /* DW_STRING is already allocated on the objfile obstack, point | |
22500 | directly to it. */ | |
22501 | result = (const gdb_byte *) DW_STRING (attr); | |
22502 | *len = strlen (DW_STRING (attr)); | |
22503 | break; | |
22504 | case DW_FORM_block1: | |
22505 | case DW_FORM_block2: | |
22506 | case DW_FORM_block4: | |
22507 | case DW_FORM_block: | |
22508 | case DW_FORM_exprloc: | |
0224619f | 22509 | case DW_FORM_data16: |
b6807d98 TT |
22510 | result = DW_BLOCK (attr)->data; |
22511 | *len = DW_BLOCK (attr)->size; | |
22512 | break; | |
22513 | ||
22514 | /* The DW_AT_const_value attributes are supposed to carry the | |
22515 | symbol's value "represented as it would be on the target | |
22516 | architecture." By the time we get here, it's already been | |
22517 | converted to host endianness, so we just need to sign- or | |
22518 | zero-extend it as appropriate. */ | |
22519 | case DW_FORM_data1: | |
22520 | type = die_type (die, cu); | |
22521 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22522 | if (result == NULL) | |
22523 | result = write_constant_as_bytes (obstack, byte_order, | |
22524 | type, value, len); | |
22525 | break; | |
22526 | case DW_FORM_data2: | |
22527 | type = die_type (die, cu); | |
22528 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22529 | if (result == NULL) | |
22530 | result = write_constant_as_bytes (obstack, byte_order, | |
22531 | type, value, len); | |
22532 | break; | |
22533 | case DW_FORM_data4: | |
22534 | type = die_type (die, cu); | |
22535 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22536 | if (result == NULL) | |
22537 | result = write_constant_as_bytes (obstack, byte_order, | |
22538 | type, value, len); | |
22539 | break; | |
22540 | case DW_FORM_data8: | |
22541 | type = die_type (die, cu); | |
22542 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22543 | if (result == NULL) | |
22544 | result = write_constant_as_bytes (obstack, byte_order, | |
22545 | type, value, len); | |
22546 | break; | |
22547 | ||
22548 | case DW_FORM_sdata: | |
663c44ac | 22549 | case DW_FORM_implicit_const: |
b6807d98 TT |
22550 | type = die_type (die, cu); |
22551 | result = write_constant_as_bytes (obstack, byte_order, | |
22552 | type, DW_SND (attr), len); | |
22553 | break; | |
22554 | ||
22555 | case DW_FORM_udata: | |
22556 | type = die_type (die, cu); | |
22557 | result = write_constant_as_bytes (obstack, byte_order, | |
22558 | type, DW_UNSND (attr), len); | |
22559 | break; | |
22560 | ||
22561 | default: | |
b98664d3 | 22562 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22563 | dwarf_form_name (attr->form)); |
22564 | break; | |
22565 | } | |
22566 | ||
22567 | return result; | |
22568 | } | |
22569 | ||
d4c9a4f8 | 22570 | /* See read.h. */ |
7942e96e AA |
22571 | |
22572 | struct type * | |
9c541725 | 22573 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
22574 | dwarf2_per_cu_data *per_cu, |
22575 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 22576 | { |
7942e96e AA |
22577 | struct die_info *die; |
22578 | ||
7188ed02 | 22579 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
22580 | if (cu == nullptr) |
22581 | cu = load_cu (per_cu, per_objfile, false); | |
22582 | ||
22583 | if (cu == nullptr) | |
22584 | return nullptr; | |
7942e96e | 22585 | |
9c541725 | 22586 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22587 | if (!die) |
22588 | return NULL; | |
22589 | ||
22590 | return die_type (die, cu); | |
22591 | } | |
22592 | ||
8cb5117c | 22593 | /* See read.h. */ |
8a9b8146 TT |
22594 | |
22595 | struct type * | |
b64f50a1 | 22596 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
22597 | dwarf2_per_cu_data *per_cu, |
22598 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 22599 | { |
9c541725 | 22600 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 22601 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
22602 | } |
22603 | ||
ac9ec31b | 22604 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22605 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22606 | On exit *REF_CU is the CU of the result. |
22607 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22608 | |
22609 | static struct die_info * | |
ac9ec31b DE |
22610 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22611 | struct dwarf2_cu **ref_cu) | |
348e048f | 22612 | { |
348e048f | 22613 | struct die_info temp_die; |
c24bdb02 | 22614 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 22615 | struct die_info *die; |
120ce1b5 SM |
22616 | dwarf2_per_objfile *dwarf2_per_objfile = (*ref_cu)->per_objfile; |
22617 | ||
348e048f | 22618 | |
ac9ec31b DE |
22619 | /* While it might be nice to assert sig_type->type == NULL here, |
22620 | we can get here for DW_AT_imported_declaration where we need | |
22621 | the DIE not the type. */ | |
348e048f DE |
22622 | |
22623 | /* If necessary, add it to the queue and load its DIEs. */ | |
22624 | ||
120ce1b5 SM |
22625 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, dwarf2_per_objfile, |
22626 | language_minimal)) | |
22627 | read_signatured_type (sig_type, dwarf2_per_objfile); | |
348e048f | 22628 | |
7188ed02 | 22629 | sig_cu = dwarf2_per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 22630 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22631 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22632 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22633 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22634 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22635 | if (die) |
22636 | { | |
796a7ff8 DE |
22637 | /* For .gdb_index version 7 keep track of included TUs. |
22638 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
5989a64e SM |
22639 | if (dwarf2_per_objfile->per_bfd->index_table != NULL |
22640 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 22641 | { |
ae640021 | 22642 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22643 | } |
22644 | ||
348e048f | 22645 | *ref_cu = sig_cu; |
c24bdb02 KS |
22646 | if (sig_cu != cu) |
22647 | sig_cu->ancestor = cu; | |
22648 | ||
348e048f DE |
22649 | return die; |
22650 | } | |
22651 | ||
ac9ec31b DE |
22652 | return NULL; |
22653 | } | |
22654 | ||
22655 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22656 | On entry *REF_CU is the CU of SRC_DIE. | |
22657 | On exit *REF_CU is the CU of the result. | |
22658 | The result is the DIE of the type. | |
22659 | If the referenced type cannot be found an error is thrown. */ | |
22660 | ||
22661 | static struct die_info * | |
ff39bb5e | 22662 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22663 | struct dwarf2_cu **ref_cu) |
22664 | { | |
22665 | ULONGEST signature = DW_SIGNATURE (attr); | |
22666 | struct signatured_type *sig_type; | |
22667 | struct die_info *die; | |
22668 | ||
22669 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22670 | ||
a2ce51a0 | 22671 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22672 | /* sig_type will be NULL if the signatured type is missing from |
22673 | the debug info. */ | |
22674 | if (sig_type == NULL) | |
22675 | { | |
22676 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22677 | " from DIE at %s [in module %s]"), |
22678 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22679 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22680 | } |
22681 | ||
22682 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22683 | if (die == NULL) | |
22684 | { | |
22685 | dump_die_for_error (src_die); | |
22686 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22687 | " from DIE at %s [in module %s]"), |
22688 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22689 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22690 | } |
22691 | ||
22692 | return die; | |
22693 | } | |
22694 | ||
22695 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22696 | reading in and processing the type unit if necessary. */ | |
22697 | ||
22698 | static struct type * | |
22699 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22700 | struct dwarf2_cu *cu) | |
22701 | { | |
5e22e966 | 22702 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b DE |
22703 | struct signatured_type *sig_type; |
22704 | struct dwarf2_cu *type_cu; | |
22705 | struct die_info *type_die; | |
22706 | struct type *type; | |
22707 | ||
a2ce51a0 | 22708 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22709 | /* sig_type will be NULL if the signatured type is missing from |
22710 | the debug info. */ | |
22711 | if (sig_type == NULL) | |
22712 | { | |
b98664d3 | 22713 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22714 | " from DIE at %s [in module %s]"), |
22715 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22716 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22717 | return build_error_marker_type (cu, die); |
22718 | } | |
22719 | ||
22720 | /* If we already know the type we're done. */ | |
e286671b TT |
22721 | type = dwarf2_per_objfile->get_type_for_signatured_type (sig_type); |
22722 | if (type != nullptr) | |
22723 | return type; | |
ac9ec31b DE |
22724 | |
22725 | type_cu = cu; | |
22726 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22727 | if (type_die != NULL) | |
22728 | { | |
22729 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22730 | is created. This is important, for example, because for c++ classes | |
22731 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22732 | type = read_type_die (type_die, type_cu); | |
22733 | if (type == NULL) | |
22734 | { | |
b98664d3 | 22735 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22736 | " referenced from DIE at %s [in module %s]"), |
22737 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22738 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22739 | type = build_error_marker_type (cu, die); |
22740 | } | |
22741 | } | |
22742 | else | |
22743 | { | |
b98664d3 | 22744 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22745 | " from DIE at %s [in module %s]"), |
22746 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22747 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22748 | type = build_error_marker_type (cu, die); |
22749 | } | |
e286671b TT |
22750 | |
22751 | dwarf2_per_objfile->set_type_for_signatured_type (sig_type, type); | |
ac9ec31b DE |
22752 | |
22753 | return type; | |
22754 | } | |
22755 | ||
22756 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22757 | reading in and processing the type unit if necessary. */ | |
22758 | ||
22759 | static struct type * | |
ff39bb5e | 22760 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22761 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22762 | { |
22763 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22764 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22765 | { |
22766 | struct dwarf2_cu *type_cu = cu; | |
22767 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22768 | ||
22769 | return read_type_die (type_die, type_cu); | |
22770 | } | |
22771 | else if (attr->form == DW_FORM_ref_sig8) | |
22772 | { | |
22773 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22774 | } | |
22775 | else | |
22776 | { | |
5e22e966 | 22777 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 22778 | |
b98664d3 | 22779 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22780 | " at %s [in module %s]"), |
22781 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22782 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22783 | return build_error_marker_type (cu, die); |
22784 | } | |
348e048f DE |
22785 | } |
22786 | ||
e5fe5e75 | 22787 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22788 | |
22789 | static void | |
ab432490 SM |
22790 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
22791 | dwarf2_per_objfile *per_objfile) | |
348e048f | 22792 | { |
52dc124a | 22793 | struct signatured_type *sig_type; |
348e048f | 22794 | |
f4dc4d17 | 22795 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22796 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22797 | |
6721b2ec DE |
22798 | /* We have the per_cu, but we need the signatured_type. |
22799 | Fortunately this is an easy translation. */ | |
22800 | gdb_assert (per_cu->is_debug_types); | |
22801 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22802 | |
7188ed02 | 22803 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22804 | |
ab432490 | 22805 | read_signatured_type (sig_type, per_objfile); |
348e048f | 22806 | |
7188ed02 | 22807 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
22808 | } |
22809 | ||
3019eac3 DE |
22810 | /* Read in a signatured type and build its CU and DIEs. |
22811 | If the type is a stub for the real type in a DWO file, | |
22812 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22813 | |
22814 | static void | |
ab432490 SM |
22815 | read_signatured_type (signatured_type *sig_type, |
22816 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
22817 | { |
22818 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22819 | |
3019eac3 | 22820 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 22821 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 22822 | |
2e671100 | 22823 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
22824 | |
22825 | if (!reader.dummy_p) | |
22826 | { | |
22827 | struct dwarf2_cu *cu = reader.cu; | |
22828 | const gdb_byte *info_ptr = reader.info_ptr; | |
22829 | ||
22830 | gdb_assert (cu->die_hash == NULL); | |
22831 | cu->die_hash = | |
22832 | htab_create_alloc_ex (cu->header.length / 12, | |
22833 | die_hash, | |
22834 | die_eq, | |
22835 | NULL, | |
22836 | &cu->comp_unit_obstack, | |
22837 | hashtab_obstack_allocate, | |
22838 | dummy_obstack_deallocate); | |
22839 | ||
3e225074 | 22840 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22841 | reader.comp_unit_die->child |
22842 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22843 | reader.comp_unit_die); | |
22844 | cu->dies = reader.comp_unit_die; | |
22845 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22846 | ||
22847 | /* We try not to read any attributes in this function, because | |
22848 | not all CUs needed for references have been loaded yet, and | |
22849 | symbol table processing isn't initialized. But we have to | |
22850 | set the CU language, or we won't be able to build types | |
22851 | correctly. Similarly, if we do not read the producer, we can | |
22852 | not apply producer-specific interpretation. */ | |
22853 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22854 | |
22855 | reader.keep (); | |
c0ab21c2 TT |
22856 | } |
22857 | ||
7ee85ab1 | 22858 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22859 | } |
22860 | ||
c906108c SS |
22861 | /* Decode simple location descriptions. |
22862 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
22863 | the location and return the value. If COMPUTED is non-null, it is |
22864 | set to true to indicate that decoding was successful, and false | |
22865 | otherwise. If COMPUTED is null, then this function may emit a | |
22866 | complaint. */ | |
c906108c SS |
22867 | |
22868 | static CORE_ADDR | |
7d79de9a | 22869 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 22870 | { |
5e22e966 | 22871 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
22872 | size_t i; |
22873 | size_t size = blk->size; | |
d521ce57 | 22874 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22875 | CORE_ADDR stack[64]; |
22876 | int stacki; | |
22877 | unsigned int bytes_read, unsnd; | |
22878 | gdb_byte op; | |
c906108c | 22879 | |
7d79de9a TT |
22880 | if (computed != nullptr) |
22881 | *computed = false; | |
22882 | ||
21ae7a4d JK |
22883 | i = 0; |
22884 | stacki = 0; | |
22885 | stack[stacki] = 0; | |
22886 | stack[++stacki] = 0; | |
22887 | ||
22888 | while (i < size) | |
22889 | { | |
22890 | op = data[i++]; | |
22891 | switch (op) | |
22892 | { | |
22893 | case DW_OP_lit0: | |
22894 | case DW_OP_lit1: | |
22895 | case DW_OP_lit2: | |
22896 | case DW_OP_lit3: | |
22897 | case DW_OP_lit4: | |
22898 | case DW_OP_lit5: | |
22899 | case DW_OP_lit6: | |
22900 | case DW_OP_lit7: | |
22901 | case DW_OP_lit8: | |
22902 | case DW_OP_lit9: | |
22903 | case DW_OP_lit10: | |
22904 | case DW_OP_lit11: | |
22905 | case DW_OP_lit12: | |
22906 | case DW_OP_lit13: | |
22907 | case DW_OP_lit14: | |
22908 | case DW_OP_lit15: | |
22909 | case DW_OP_lit16: | |
22910 | case DW_OP_lit17: | |
22911 | case DW_OP_lit18: | |
22912 | case DW_OP_lit19: | |
22913 | case DW_OP_lit20: | |
22914 | case DW_OP_lit21: | |
22915 | case DW_OP_lit22: | |
22916 | case DW_OP_lit23: | |
22917 | case DW_OP_lit24: | |
22918 | case DW_OP_lit25: | |
22919 | case DW_OP_lit26: | |
22920 | case DW_OP_lit27: | |
22921 | case DW_OP_lit28: | |
22922 | case DW_OP_lit29: | |
22923 | case DW_OP_lit30: | |
22924 | case DW_OP_lit31: | |
22925 | stack[++stacki] = op - DW_OP_lit0; | |
22926 | break; | |
f1bea926 | 22927 | |
21ae7a4d JK |
22928 | case DW_OP_reg0: |
22929 | case DW_OP_reg1: | |
22930 | case DW_OP_reg2: | |
22931 | case DW_OP_reg3: | |
22932 | case DW_OP_reg4: | |
22933 | case DW_OP_reg5: | |
22934 | case DW_OP_reg6: | |
22935 | case DW_OP_reg7: | |
22936 | case DW_OP_reg8: | |
22937 | case DW_OP_reg9: | |
22938 | case DW_OP_reg10: | |
22939 | case DW_OP_reg11: | |
22940 | case DW_OP_reg12: | |
22941 | case DW_OP_reg13: | |
22942 | case DW_OP_reg14: | |
22943 | case DW_OP_reg15: | |
22944 | case DW_OP_reg16: | |
22945 | case DW_OP_reg17: | |
22946 | case DW_OP_reg18: | |
22947 | case DW_OP_reg19: | |
22948 | case DW_OP_reg20: | |
22949 | case DW_OP_reg21: | |
22950 | case DW_OP_reg22: | |
22951 | case DW_OP_reg23: | |
22952 | case DW_OP_reg24: | |
22953 | case DW_OP_reg25: | |
22954 | case DW_OP_reg26: | |
22955 | case DW_OP_reg27: | |
22956 | case DW_OP_reg28: | |
22957 | case DW_OP_reg29: | |
22958 | case DW_OP_reg30: | |
22959 | case DW_OP_reg31: | |
22960 | stack[++stacki] = op - DW_OP_reg0; | |
22961 | if (i < size) | |
7d79de9a TT |
22962 | { |
22963 | if (computed == nullptr) | |
22964 | dwarf2_complex_location_expr_complaint (); | |
22965 | else | |
22966 | return 0; | |
22967 | } | |
21ae7a4d | 22968 | break; |
c906108c | 22969 | |
21ae7a4d JK |
22970 | case DW_OP_regx: |
22971 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22972 | i += bytes_read; | |
22973 | stack[++stacki] = unsnd; | |
22974 | if (i < size) | |
7d79de9a TT |
22975 | { |
22976 | if (computed == nullptr) | |
22977 | dwarf2_complex_location_expr_complaint (); | |
22978 | else | |
22979 | return 0; | |
22980 | } | |
21ae7a4d | 22981 | break; |
c906108c | 22982 | |
21ae7a4d | 22983 | case DW_OP_addr: |
c8a7a66f TT |
22984 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22985 | &bytes_read); | |
21ae7a4d JK |
22986 | i += bytes_read; |
22987 | break; | |
d53d4ac5 | 22988 | |
21ae7a4d JK |
22989 | case DW_OP_const1u: |
22990 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22991 | i += 1; | |
22992 | break; | |
22993 | ||
22994 | case DW_OP_const1s: | |
22995 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22996 | i += 1; | |
22997 | break; | |
22998 | ||
22999 | case DW_OP_const2u: | |
23000 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23001 | i += 2; | |
23002 | break; | |
23003 | ||
23004 | case DW_OP_const2s: | |
23005 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23006 | i += 2; | |
23007 | break; | |
d53d4ac5 | 23008 | |
21ae7a4d JK |
23009 | case DW_OP_const4u: |
23010 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23011 | i += 4; | |
23012 | break; | |
23013 | ||
23014 | case DW_OP_const4s: | |
23015 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23016 | i += 4; | |
23017 | break; | |
23018 | ||
585861ea JK |
23019 | case DW_OP_const8u: |
23020 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23021 | i += 8; | |
23022 | break; | |
23023 | ||
21ae7a4d JK |
23024 | case DW_OP_constu: |
23025 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23026 | &bytes_read); | |
23027 | i += bytes_read; | |
23028 | break; | |
23029 | ||
23030 | case DW_OP_consts: | |
23031 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23032 | i += bytes_read; | |
23033 | break; | |
23034 | ||
23035 | case DW_OP_dup: | |
23036 | stack[stacki + 1] = stack[stacki]; | |
23037 | stacki++; | |
23038 | break; | |
23039 | ||
23040 | case DW_OP_plus: | |
23041 | stack[stacki - 1] += stack[stacki]; | |
23042 | stacki--; | |
23043 | break; | |
23044 | ||
23045 | case DW_OP_plus_uconst: | |
23046 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23047 | &bytes_read); | |
23048 | i += bytes_read; | |
23049 | break; | |
23050 | ||
23051 | case DW_OP_minus: | |
23052 | stack[stacki - 1] -= stack[stacki]; | |
23053 | stacki--; | |
23054 | break; | |
23055 | ||
23056 | case DW_OP_deref: | |
23057 | /* If we're not the last op, then we definitely can't encode | |
23058 | this using GDB's address_class enum. This is valid for partial | |
23059 | global symbols, although the variable's address will be bogus | |
23060 | in the psymtab. */ | |
23061 | if (i < size) | |
7d79de9a TT |
23062 | { |
23063 | if (computed == nullptr) | |
23064 | dwarf2_complex_location_expr_complaint (); | |
23065 | else | |
23066 | return 0; | |
23067 | } | |
21ae7a4d JK |
23068 | break; |
23069 | ||
23070 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23071 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23072 | /* The top of the stack has the offset from the beginning |
23073 | of the thread control block at which the variable is located. */ | |
23074 | /* Nothing should follow this operator, so the top of stack would | |
23075 | be returned. */ | |
23076 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23077 | address will be bogus in the psymtab. Make it always at least |
23078 | non-zero to not look as a variable garbage collected by linker | |
23079 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23080 | if (i < size) |
7d79de9a TT |
23081 | { |
23082 | if (computed == nullptr) | |
23083 | dwarf2_complex_location_expr_complaint (); | |
23084 | else | |
23085 | return 0; | |
23086 | } | |
585861ea | 23087 | stack[stacki]++; |
21ae7a4d JK |
23088 | break; |
23089 | ||
23090 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23091 | if (computed != nullptr) |
23092 | return 0; | |
21ae7a4d JK |
23093 | break; |
23094 | ||
336d760d | 23095 | case DW_OP_addrx: |
3019eac3 | 23096 | case DW_OP_GNU_addr_index: |
49f6c839 | 23097 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23098 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23099 | &bytes_read); | |
23100 | i += bytes_read; | |
23101 | break; | |
23102 | ||
21ae7a4d | 23103 | default: |
7d79de9a TT |
23104 | if (computed == nullptr) |
23105 | { | |
23106 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23107 | |
7d79de9a TT |
23108 | if (name) |
23109 | complaint (_("unsupported stack op: '%s'"), | |
23110 | name); | |
23111 | else | |
23112 | complaint (_("unsupported stack op: '%02x'"), | |
23113 | op); | |
23114 | } | |
21ae7a4d JK |
23115 | |
23116 | return (stack[stacki]); | |
d53d4ac5 | 23117 | } |
3c6e0cb3 | 23118 | |
21ae7a4d JK |
23119 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23120 | outside of the allocated space. Also enforce minimum>0. */ | |
23121 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23122 | { | |
7d79de9a TT |
23123 | if (computed == nullptr) |
23124 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23125 | return 0; |
23126 | } | |
23127 | ||
23128 | if (stacki <= 0) | |
23129 | { | |
7d79de9a TT |
23130 | if (computed == nullptr) |
23131 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23132 | return 0; |
23133 | } | |
23134 | } | |
7d79de9a TT |
23135 | |
23136 | if (computed != nullptr) | |
23137 | *computed = true; | |
21ae7a4d | 23138 | return (stack[stacki]); |
c906108c SS |
23139 | } |
23140 | ||
23141 | /* memory allocation interface */ | |
23142 | ||
c906108c | 23143 | static struct dwarf_block * |
7b5a2f43 | 23144 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23145 | { |
8d749320 | 23146 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23147 | } |
23148 | ||
c906108c | 23149 | static struct die_info * |
b60c80d6 | 23150 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23151 | { |
23152 | struct die_info *die; | |
b60c80d6 DJ |
23153 | size_t size = sizeof (struct die_info); |
23154 | ||
23155 | if (num_attrs > 1) | |
23156 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23157 | |
b60c80d6 | 23158 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23159 | memset (die, 0, sizeof (struct die_info)); |
23160 | return (die); | |
23161 | } | |
2e276125 JB |
23162 | |
23163 | \f | |
a036ba48 | 23164 | |
c90ec28a | 23165 | /* Macro support. */ |
cf2c3c16 | 23166 | |
9eac9650 TT |
23167 | /* An overload of dwarf_decode_macros that finds the correct section |
23168 | and ensures it is read in before calling the other overload. */ | |
23169 | ||
23170 | static void | |
23171 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23172 | int section_is_gnu) | |
23173 | { | |
5e22e966 | 23174 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
9eac9650 | 23175 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5a0e026f | 23176 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23177 | unsigned int offset_size = cu->header.offset_size; |
23178 | struct dwarf2_section_info *section; | |
23179 | const char *section_name; | |
23180 | ||
23181 | if (cu->dwo_unit != nullptr) | |
23182 | { | |
23183 | if (section_is_gnu) | |
23184 | { | |
23185 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23186 | section_name = ".debug_macro.dwo"; | |
23187 | } | |
23188 | else | |
23189 | { | |
23190 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23191 | section_name = ".debug_macinfo.dwo"; | |
23192 | } | |
23193 | } | |
23194 | else | |
23195 | { | |
23196 | if (section_is_gnu) | |
23197 | { | |
5989a64e | 23198 | section = &dwarf2_per_objfile->per_bfd->macro; |
9eac9650 TT |
23199 | section_name = ".debug_macro"; |
23200 | } | |
23201 | else | |
23202 | { | |
5989a64e | 23203 | section = &dwarf2_per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23204 | section_name = ".debug_macinfo"; |
23205 | } | |
23206 | } | |
23207 | ||
23208 | section->read (objfile); | |
23209 | if (section->buffer == nullptr) | |
23210 | { | |
23211 | complaint (_("missing %s section"), section_name); | |
23212 | return; | |
23213 | } | |
23214 | ||
23215 | buildsym_compunit *builder = cu->get_builder (); | |
23216 | ||
23217 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
23218 | offset_size, offset, section_is_gnu); | |
23219 | } | |
23220 | ||
3019eac3 DE |
23221 | /* Return the .debug_loc section to use for CU. |
23222 | For DWO files use .debug_loc.dwo. */ | |
23223 | ||
23224 | static struct dwarf2_section_info * | |
23225 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23226 | { | |
5e22e966 | 23227 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 23228 | |
3019eac3 | 23229 | if (cu->dwo_unit) |
43988095 JK |
23230 | { |
23231 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23232 | |
43988095 JK |
23233 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23234 | } | |
5989a64e SM |
23235 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->per_bfd->loclists |
23236 | : &dwarf2_per_objfile->per_bfd->loc); | |
3019eac3 DE |
23237 | } |
23238 | ||
8cf6f0b1 TT |
23239 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23240 | ||
23241 | static void | |
23242 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23243 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23244 | const struct attribute *attr) |
8cf6f0b1 | 23245 | { |
5e22e966 | 23246 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 DE |
23247 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23248 | ||
96b79293 | 23249 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 | 23250 | |
a50264ba | 23251 | baton->per_objfile = dwarf2_per_objfile; |
8cf6f0b1 TT |
23252 | baton->per_cu = cu->per_cu; |
23253 | gdb_assert (baton->per_cu); | |
23254 | /* We don't know how long the location list is, but make sure we | |
23255 | don't run off the edge of the section. */ | |
3019eac3 DE |
23256 | baton->size = section->size - DW_UNSND (attr); |
23257 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23258 | if (cu->base_address.has_value ()) |
23259 | baton->base_address = *cu->base_address; | |
23260 | else | |
23261 | baton->base_address = 0; | |
f664829e | 23262 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23263 | } |
23264 | ||
4c2df51b | 23265 | static void |
ff39bb5e | 23266 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23267 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23268 | { |
5e22e966 | 23269 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
bb5ed363 | 23270 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 23271 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23272 | |
cd6c91b4 | 23273 | if (attr->form_is_section_offset () |
3019eac3 | 23274 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23275 | the section. If so, fall through to the complaint in the |
23276 | other branch. */ | |
2c7d5afc | 23277 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23278 | { |
0d53c4c4 | 23279 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23280 | |
8d749320 | 23281 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23282 | |
8cf6f0b1 | 23283 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23284 | |
2b24b6e4 | 23285 | if (!cu->base_address.has_value ()) |
b98664d3 | 23286 | complaint (_("Location list used without " |
3e43a32a | 23287 | "specifying the CU base address.")); |
4c2df51b | 23288 | |
f1e6e072 TT |
23289 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23290 | ? dwarf2_loclist_block_index | |
23291 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23292 | SYMBOL_LOCATION_BATON (sym) = baton; |
23293 | } | |
23294 | else | |
23295 | { | |
23296 | struct dwarf2_locexpr_baton *baton; | |
23297 | ||
8d749320 | 23298 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 23299 | baton->per_objfile = dwarf2_per_objfile; |
ae0d2f24 UW |
23300 | baton->per_cu = cu->per_cu; |
23301 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23302 | |
4fc6c0d5 | 23303 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23304 | { |
23305 | /* Note that we're just copying the block's data pointer | |
23306 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23307 | info_buffer for SYM's objfile; right now we never release |
23308 | that buffer, but when we do clean up properly this may | |
23309 | need to change. */ | |
0d53c4c4 DJ |
23310 | baton->size = DW_BLOCK (attr)->size; |
23311 | baton->data = DW_BLOCK (attr)->data; | |
23312 | } | |
23313 | else | |
23314 | { | |
23315 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23316 | sym->natural_name ()); |
0d53c4c4 | 23317 | baton->size = 0; |
0d53c4c4 | 23318 | } |
6e70227d | 23319 | |
f1e6e072 TT |
23320 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23321 | ? dwarf2_locexpr_block_index | |
23322 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23323 | SYMBOL_LOCATION_BATON (sym) = baton; |
23324 | } | |
4c2df51b | 23325 | } |
6502dd73 | 23326 | |
2e6a9f79 | 23327 | /* See read.h. */ |
96408a79 | 23328 | |
2e6a9f79 SM |
23329 | const comp_unit_head * |
23330 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 23331 | { |
2e6a9f79 SM |
23332 | if (!m_header_read_in) |
23333 | { | |
23334 | const gdb_byte *info_ptr | |
23335 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 23336 | |
2e6a9f79 | 23337 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 23338 | |
2e6a9f79 SM |
23339 | read_comp_unit_head (&m_header, info_ptr, this->section, |
23340 | rcuh_kind::COMPILE); | |
23341 | } | |
96408a79 | 23342 | |
2e6a9f79 | 23343 | return &m_header; |
96408a79 SA |
23344 | } |
23345 | ||
09ba997f | 23346 | /* See read.h. */ |
ae0d2f24 | 23347 | |
98714339 | 23348 | int |
09ba997f | 23349 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23350 | { |
2e6a9f79 | 23351 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
23352 | } |
23353 | ||
09ba997f | 23354 | /* See read.h. */ |
9eae7c52 TT |
23355 | |
23356 | int | |
09ba997f | 23357 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23358 | { |
2e6a9f79 | 23359 | return this->get_header ()->offset_size; |
96408a79 SA |
23360 | } |
23361 | ||
09ba997f | 23362 | /* See read.h. */ |
96408a79 SA |
23363 | |
23364 | int | |
09ba997f | 23365 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 23366 | { |
2e6a9f79 | 23367 | const comp_unit_head *header = this->get_header (); |
96408a79 | 23368 | |
2e6a9f79 SM |
23369 | if (header->version == 2) |
23370 | return header->addr_size; | |
96408a79 | 23371 | else |
2e6a9f79 | 23372 | return header->offset_size; |
181cebd4 JK |
23373 | } |
23374 | ||
09ba997f | 23375 | /* See read.h. */ |
9aa1f1e3 | 23376 | |
09ba997f | 23377 | struct type * |
293e7e51 | 23378 | dwarf2_cu::addr_type () const |
9a49df9d | 23379 | { |
293e7e51 | 23380 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
23381 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23382 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 23383 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
23384 | |
23385 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23386 | return addr_type; | |
23387 | ||
09ba997f | 23388 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23389 | return addr_type; |
23390 | } | |
23391 | ||
22b6cd70 TT |
23392 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23393 | the index of the result, and that searches a vector. It will | |
23394 | return a result even if the offset in question does not actually | |
23395 | occur in any CU. This is separate so that it can be unit | |
23396 | tested. */ | |
ae038cb0 | 23397 | |
22b6cd70 TT |
23398 | static int |
23399 | dwarf2_find_containing_comp_unit | |
23400 | (sect_offset sect_off, | |
23401 | unsigned int offset_in_dwz, | |
23402 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23403 | { |
ae038cb0 DJ |
23404 | int low, high; |
23405 | ||
ae038cb0 | 23406 | low = 0; |
22b6cd70 | 23407 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23408 | while (high > low) |
23409 | { | |
36586728 | 23410 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23411 | int mid = low + (high - low) / 2; |
9a619af0 | 23412 | |
22b6cd70 | 23413 | mid_cu = all_comp_units[mid]; |
36586728 | 23414 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23415 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23416 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23417 | high = mid; |
23418 | else | |
23419 | low = mid + 1; | |
23420 | } | |
23421 | gdb_assert (low == high); | |
22b6cd70 TT |
23422 | return low; |
23423 | } | |
23424 | ||
23425 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23426 | the DIE at OFFSET. Raises an error on failure. */ | |
23427 | ||
23428 | static struct dwarf2_per_cu_data * | |
23429 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23430 | unsigned int offset_in_dwz, | |
23431 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
23432 | { | |
23433 | int low | |
23434 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
5989a64e | 23435 | dwarf2_per_objfile->per_bfd->all_comp_units); |
22b6cd70 | 23436 | struct dwarf2_per_cu_data *this_cu |
5989a64e | 23437 | = dwarf2_per_objfile->per_bfd->all_comp_units[low]; |
22b6cd70 | 23438 | |
45b8ae0c | 23439 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23440 | { |
36586728 | 23441 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23442 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23443 | "offset %s [in module %s]"), |
23444 | sect_offset_str (sect_off), | |
ed2dc618 | 23445 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 23446 | |
5989a64e | 23447 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 23448 | <= sect_off); |
5989a64e | 23449 | return dwarf2_per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
23450 | } |
23451 | else | |
23452 | { | |
5989a64e | 23453 | if (low == dwarf2_per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 23454 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23455 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23456 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23457 | return this_cu; |
23458 | } | |
23459 | } | |
23460 | ||
22b6cd70 TT |
23461 | #if GDB_SELF_TEST |
23462 | ||
23463 | namespace selftests { | |
23464 | namespace find_containing_comp_unit { | |
23465 | ||
23466 | static void | |
23467 | run_test () | |
23468 | { | |
23469 | struct dwarf2_per_cu_data one {}; | |
23470 | struct dwarf2_per_cu_data two {}; | |
23471 | struct dwarf2_per_cu_data three {}; | |
23472 | struct dwarf2_per_cu_data four {}; | |
23473 | ||
23474 | one.length = 5; | |
23475 | two.sect_off = sect_offset (one.length); | |
23476 | two.length = 7; | |
23477 | ||
23478 | three.length = 5; | |
23479 | three.is_dwz = 1; | |
23480 | four.sect_off = sect_offset (three.length); | |
23481 | four.length = 7; | |
23482 | four.is_dwz = 1; | |
23483 | ||
23484 | std::vector<dwarf2_per_cu_data *> units; | |
23485 | units.push_back (&one); | |
23486 | units.push_back (&two); | |
23487 | units.push_back (&three); | |
23488 | units.push_back (&four); | |
23489 | ||
23490 | int result; | |
23491 | ||
23492 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23493 | SELF_CHECK (units[result] == &one); | |
23494 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23495 | SELF_CHECK (units[result] == &one); | |
23496 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23497 | SELF_CHECK (units[result] == &two); | |
23498 | ||
23499 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23500 | SELF_CHECK (units[result] == &three); | |
23501 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23502 | SELF_CHECK (units[result] == &three); | |
23503 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23504 | SELF_CHECK (units[result] == &four); | |
23505 | } | |
23506 | ||
23507 | } | |
23508 | } | |
23509 | ||
23510 | #endif /* GDB_SELF_TEST */ | |
23511 | ||
9e021579 | 23512 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 23513 | |
9e021579 SM |
23514 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
23515 | dwarf2_per_objfile *per_objfile) | |
23516 | : per_cu (per_cu), | |
23517 | per_objfile (per_objfile), | |
9068261f AB |
23518 | mark (false), |
23519 | has_loclist (false), | |
23520 | checked_producer (false), | |
23521 | producer_is_gxx_lt_4_6 (false), | |
23522 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23523 | producer_is_icc (false), |
9068261f | 23524 | producer_is_icc_lt_14 (false), |
c258c396 | 23525 | producer_is_codewarrior (false), |
9068261f | 23526 | processing_has_namespace_info (false) |
93311388 | 23527 | { |
9816fde3 JK |
23528 | } |
23529 | ||
23530 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23531 | ||
23532 | static void | |
95554aad TT |
23533 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23534 | enum language pretend_language) | |
9816fde3 JK |
23535 | { |
23536 | struct attribute *attr; | |
23537 | ||
23538 | /* Set the language we're debugging. */ | |
23539 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23540 | if (attr != nullptr) |
9816fde3 JK |
23541 | set_cu_language (DW_UNSND (attr), cu); |
23542 | else | |
9cded63f | 23543 | { |
95554aad | 23544 | cu->language = pretend_language; |
9cded63f TT |
23545 | cu->language_defn = language_def (cu->language); |
23546 | } | |
dee91e82 | 23547 | |
7d45c7c3 | 23548 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23549 | } |
23550 | ||
7188ed02 | 23551 | /* See read.h. */ |
ae038cb0 | 23552 | |
7188ed02 SM |
23553 | dwarf2_cu * |
23554 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23555 | { |
7188ed02 SM |
23556 | auto it = m_dwarf2_cus.find (per_cu); |
23557 | if (it == m_dwarf2_cus.end ()) | |
23558 | return nullptr; | |
ae038cb0 | 23559 | |
7188ed02 SM |
23560 | return it->second; |
23561 | } | |
23562 | ||
23563 | /* See read.h. */ | |
23564 | ||
23565 | void | |
23566 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
23567 | { | |
23568 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
23569 | ||
23570 | m_dwarf2_cus[per_cu] = cu; | |
23571 | } | |
23572 | ||
23573 | /* See read.h. */ | |
23574 | ||
23575 | void | |
23576 | dwarf2_per_objfile::age_comp_units () | |
23577 | { | |
23578 | /* Start by clearing all marks. */ | |
23579 | for (auto pair : m_dwarf2_cus) | |
23580 | pair.second->mark = false; | |
23581 | ||
23582 | /* Traverse all CUs, mark them and their dependencies if used recently | |
23583 | enough. */ | |
23584 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 23585 | { |
7188ed02 SM |
23586 | dwarf2_cu *cu = pair.second; |
23587 | ||
23588 | cu->last_used++; | |
23589 | if (cu->last_used <= dwarf_max_cache_age) | |
23590 | dwarf2_mark (cu); | |
ae038cb0 DJ |
23591 | } |
23592 | ||
7188ed02 SM |
23593 | /* Delete all CUs still not marked. */ |
23594 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 23595 | { |
7188ed02 | 23596 | dwarf2_cu *cu = it->second; |
ae038cb0 | 23597 | |
7188ed02 | 23598 | if (!cu->mark) |
ae038cb0 | 23599 | { |
7188ed02 SM |
23600 | delete cu; |
23601 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
23602 | } |
23603 | else | |
7188ed02 | 23604 | it++; |
ae038cb0 DJ |
23605 | } |
23606 | } | |
23607 | ||
7188ed02 | 23608 | /* See read.h. */ |
ae038cb0 | 23609 | |
7188ed02 SM |
23610 | void |
23611 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 23612 | { |
7188ed02 SM |
23613 | auto it = m_dwarf2_cus.find (per_cu); |
23614 | if (it == m_dwarf2_cus.end ()) | |
23615 | return; | |
ae038cb0 | 23616 | |
7188ed02 | 23617 | delete it->second; |
ae038cb0 | 23618 | |
7188ed02 SM |
23619 | m_dwarf2_cus.erase (it); |
23620 | } | |
ae038cb0 | 23621 | |
7188ed02 SM |
23622 | dwarf2_per_objfile::~dwarf2_per_objfile () |
23623 | { | |
23624 | remove_all_cus (); | |
ae038cb0 DJ |
23625 | } |
23626 | ||
dee91e82 DE |
23627 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23628 | We store these in a hash table separate from the DIEs, and preserve them | |
23629 | when the DIEs are flushed out of cache. | |
23630 | ||
23631 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23632 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23633 | or the type may come from a DWO file. Furthermore, while it's more logical |
23634 | to use per_cu->section+offset, with Fission the section with the data is in | |
23635 | the DWO file but we don't know that section at the point we need it. | |
23636 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23637 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23638 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23639 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23640 | |
dee91e82 | 23641 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23642 | { |
dee91e82 | 23643 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23644 | sect_offset sect_off; |
1c379e20 DJ |
23645 | struct type *type; |
23646 | }; | |
23647 | ||
dee91e82 | 23648 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23649 | |
23650 | static hashval_t | |
dee91e82 | 23651 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23652 | { |
9a3c8263 SM |
23653 | const struct dwarf2_per_cu_offset_and_type *ofs |
23654 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23655 | |
9c541725 | 23656 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23657 | } |
23658 | ||
dee91e82 | 23659 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23660 | |
23661 | static int | |
dee91e82 | 23662 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23663 | { |
9a3c8263 SM |
23664 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23665 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23666 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23667 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23668 | |
dee91e82 | 23669 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23670 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23671 | } |
23672 | ||
23673 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23674 | table if necessary. For convenience, return TYPE. |
23675 | ||
23676 | The DIEs reading must have careful ordering to: | |
85102364 | 23677 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23678 | reading current DIE. |
23679 | * Not trying to dereference contents of still incompletely read in types | |
23680 | while reading in other DIEs. | |
23681 | * Enable referencing still incompletely read in types just by a pointer to | |
23682 | the type without accessing its fields. | |
23683 | ||
23684 | Therefore caller should follow these rules: | |
23685 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23686 | before building the type and calling set_die_type. | |
e71ec853 | 23687 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23688 | possible before fetching more types to complete the current type. |
23689 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23690 | |
f792889a | 23691 | static struct type * |
1c379e20 DJ |
23692 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23693 | { | |
5e22e966 | 23694 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 23695 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23696 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23697 | struct attribute *attr; |
23698 | struct dynamic_prop prop; | |
1c379e20 | 23699 | |
b4ba55a1 JB |
23700 | /* For Ada types, make sure that the gnat-specific data is always |
23701 | initialized (if not already set). There are a few types where | |
23702 | we should not be doing so, because the type-specific area is | |
23703 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23704 | where the type-specific area is used to store the floatformat). | |
23705 | But this is not a problem, because the gnat-specific information | |
23706 | is actually not needed for these types. */ | |
23707 | if (need_gnat_info (cu) | |
78134374 SM |
23708 | && type->code () != TYPE_CODE_FUNC |
23709 | && type->code () != TYPE_CODE_FLT | |
23710 | && type->code () != TYPE_CODE_METHODPTR | |
23711 | && type->code () != TYPE_CODE_MEMBERPTR | |
23712 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23713 | && !HAVE_GNAT_AUX_INFO (type)) |
23714 | INIT_GNAT_SPECIFIC (type); | |
23715 | ||
3f2f83dd KB |
23716 | /* Read DW_AT_allocated and set in type. */ |
23717 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23718 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23719 | { |
293e7e51 | 23720 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23721 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23722 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd KB |
23723 | } |
23724 | else if (attr != NULL) | |
23725 | { | |
b98664d3 | 23726 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23727 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23728 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23729 | } |
23730 | ||
23731 | /* Read DW_AT_associated and set in type. */ | |
23732 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23733 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23734 | { |
293e7e51 | 23735 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 23736 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23737 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd KB |
23738 | } |
23739 | else if (attr != NULL) | |
23740 | { | |
b98664d3 | 23741 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23742 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23743 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23744 | } |
23745 | ||
3cdcd0ce JB |
23746 | /* Read DW_AT_data_location and set in type. */ |
23747 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 23748 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 23749 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 23750 | |
ae090bdb SM |
23751 | if (dwarf2_per_objfile->die_type_hash == NULL) |
23752 | dwarf2_per_objfile->die_type_hash | |
0335378b TT |
23753 | = htab_up (htab_create_alloc (127, |
23754 | per_cu_offset_and_type_hash, | |
23755 | per_cu_offset_and_type_eq, | |
23756 | NULL, xcalloc, xfree)); | |
1c379e20 | 23757 | |
dee91e82 | 23758 | ofs.per_cu = cu->per_cu; |
9c541725 | 23759 | ofs.sect_off = die->sect_off; |
1c379e20 | 23760 | ofs.type = type; |
dee91e82 | 23761 | slot = (struct dwarf2_per_cu_offset_and_type **) |
ae090bdb | 23762 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23763 | if (*slot) |
b98664d3 | 23764 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23765 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23766 | *slot = XOBNEW (&objfile->objfile_obstack, |
23767 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23768 | **slot = ofs; |
f792889a | 23769 | return type; |
1c379e20 DJ |
23770 | } |
23771 | ||
9c541725 | 23772 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23773 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23774 | |
23775 | static struct type * | |
9c541725 | 23776 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 SM |
23777 | dwarf2_per_cu_data *per_cu, |
23778 | dwarf2_per_objfile *dwarf2_per_objfile) | |
1c379e20 | 23779 | { |
dee91e82 | 23780 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 23781 | |
ae090bdb | 23782 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23783 | return NULL; |
1c379e20 | 23784 | |
dee91e82 | 23785 | ofs.per_cu = per_cu; |
9c541725 | 23786 | ofs.sect_off = sect_off; |
9a3c8263 | 23787 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
ae090bdb | 23788 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23789 | if (slot) |
23790 | return slot->type; | |
23791 | else | |
23792 | return NULL; | |
23793 | } | |
23794 | ||
02142a6c | 23795 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23796 | or return NULL if DIE does not have a saved type. */ |
23797 | ||
23798 | static struct type * | |
23799 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23800 | { | |
aa66c379 | 23801 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
23802 | } |
23803 | ||
10b3939b DJ |
23804 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23805 | ||
23806 | static void | |
23807 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23808 | struct dwarf2_per_cu_data *ref_per_cu) | |
23809 | { | |
23810 | void **slot; | |
23811 | ||
23812 | if (cu->dependencies == NULL) | |
23813 | cu->dependencies | |
23814 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23815 | NULL, &cu->comp_unit_obstack, | |
23816 | hashtab_obstack_allocate, | |
23817 | dummy_obstack_deallocate); | |
23818 | ||
23819 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23820 | if (*slot == NULL) | |
23821 | *slot = ref_per_cu; | |
23822 | } | |
1c379e20 | 23823 | |
f504f079 DE |
23824 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23825 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
23826 | cache that we must keep because we are keeping CU. |
23827 | ||
23828 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 23829 | |
10b3939b DJ |
23830 | static int |
23831 | dwarf2_mark_helper (void **slot, void *data) | |
23832 | { | |
7188ed02 SM |
23833 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
23834 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
23835 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
23836 | |
23837 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23838 | reading of the chain. As such dependencies remain valid it is not much | |
23839 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 23840 | if (cu == nullptr) |
d07ed419 JK |
23841 | return 1; |
23842 | ||
7188ed02 | 23843 | if (cu->mark) |
10b3939b | 23844 | return 1; |
10b3939b | 23845 | |
7188ed02 SM |
23846 | cu->mark = true; |
23847 | ||
23848 | if (cu->dependencies != nullptr) | |
23849 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
23850 | |
23851 | return 1; | |
23852 | } | |
23853 | ||
f504f079 DE |
23854 | /* Set the mark field in CU and in every other compilation unit in the |
23855 | cache that we must keep because we are keeping CU. */ | |
23856 | ||
ae038cb0 DJ |
23857 | static void |
23858 | dwarf2_mark (struct dwarf2_cu *cu) | |
23859 | { | |
23860 | if (cu->mark) | |
23861 | return; | |
7188ed02 | 23862 | |
9068261f | 23863 | cu->mark = true; |
ae038cb0 | 23864 | |
7188ed02 SM |
23865 | if (cu->dependencies != nullptr) |
23866 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
23867 | } |
23868 | ||
72bf9492 DJ |
23869 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23870 | is its offset in .debug_info for this objfile. */ | |
23871 | ||
23872 | static hashval_t | |
23873 | partial_die_hash (const void *item) | |
23874 | { | |
9a3c8263 SM |
23875 | const struct partial_die_info *part_die |
23876 | = (const struct partial_die_info *) item; | |
9a619af0 | 23877 | |
9c541725 | 23878 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23879 | } |
23880 | ||
23881 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23882 | are equal if they have the same offset. */ | |
23883 | ||
23884 | static int | |
23885 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23886 | { | |
9a3c8263 SM |
23887 | const struct partial_die_info *part_die_lhs |
23888 | = (const struct partial_die_info *) item_lhs; | |
23889 | const struct partial_die_info *part_die_rhs | |
23890 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23891 | |
9c541725 | 23892 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23893 | } |
23894 | ||
3c3bb058 AB |
23895 | struct cmd_list_element *set_dwarf_cmdlist; |
23896 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 23897 | |
9291a0cd | 23898 | static void |
cd4fb1b2 SM |
23899 | show_check_physname (struct ui_file *file, int from_tty, |
23900 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23901 | { |
cd4fb1b2 SM |
23902 | fprintf_filtered (file, |
23903 | _("Whether to check \"physname\" is %s.\n"), | |
23904 | value); | |
9291a0cd TT |
23905 | } |
23906 | ||
6c265988 | 23907 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23908 | void |
6c265988 | 23909 | _initialize_dwarf2_read () |
9291a0cd | 23910 | { |
0743fc83 | 23911 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 23912 | Set DWARF specific variables.\n\ |
590042fc | 23913 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
23914 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23915 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23916 | |
0743fc83 | 23917 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
23918 | Show DWARF specific variables.\n\ |
23919 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
23920 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23921 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23922 | |
cd4fb1b2 SM |
23923 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23924 | &dwarf_max_cache_age, _("\ | |
23925 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23926 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23927 | A higher limit means that cached compilation units will be stored\n\ | |
23928 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23929 | caching, which can slow down startup."), | |
23930 | NULL, | |
23931 | show_dwarf_max_cache_age, | |
23932 | &set_dwarf_cmdlist, | |
23933 | &show_dwarf_cmdlist); | |
156942c7 | 23934 | |
cd4fb1b2 SM |
23935 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23936 | Set debugging of the DWARF reader."), _("\ | |
23937 | Show debugging of the DWARF reader."), _("\ | |
23938 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23939 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23940 | information. A value greater than 1 provides more verbose information."), | |
23941 | NULL, | |
23942 | NULL, | |
23943 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23944 | |
cd4fb1b2 SM |
23945 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23946 | Set debugging of the DWARF DIE reader."), _("\ | |
23947 | Show debugging of the DWARF DIE reader."), _("\ | |
23948 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23949 | The value is the maximum depth to print."), | |
23950 | NULL, | |
23951 | NULL, | |
23952 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23953 | |
cd4fb1b2 SM |
23954 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23955 | Set debugging of the dwarf line reader."), _("\ | |
23956 | Show debugging of the dwarf line reader."), _("\ | |
23957 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23958 | A value of 1 (one) provides basic information.\n\ | |
23959 | A value greater than 1 provides more verbose information."), | |
23960 | NULL, | |
23961 | NULL, | |
23962 | &setdebuglist, &showdebuglist); | |
437afbb8 | 23963 | |
cd4fb1b2 SM |
23964 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23965 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23966 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23967 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23968 | the demangler."), | |
23969 | NULL, show_check_physname, | |
23970 | &setdebuglist, &showdebuglist); | |
900e11f9 | 23971 | |
e615022a DE |
23972 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23973 | no_class, &use_deprecated_index_sections, _("\ | |
23974 | Set whether to use deprecated gdb_index sections."), _("\ | |
23975 | Show whether to use deprecated gdb_index sections."), _("\ | |
23976 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23977 | Normally they are ignored either because of a missing feature or\n\ | |
23978 | performance issue.\n\ | |
23979 | Warning: This option must be enabled before gdb reads the file."), | |
23980 | NULL, | |
23981 | NULL, | |
23982 | &setlist, &showlist); | |
23983 | ||
f1e6e072 TT |
23984 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
23985 | &dwarf2_locexpr_funcs); | |
23986 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23987 | &dwarf2_loclist_funcs); | |
23988 | ||
23989 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23990 | &dwarf2_block_frame_base_locexpr_funcs); | |
23991 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23992 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
23993 | |
23994 | #if GDB_SELF_TEST | |
23995 | selftests::register_test ("dw2_expand_symtabs_matching", | |
23996 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
23997 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
23998 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 23999 | #endif |
6502dd73 | 24000 | } |