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" |
4de283e4 | 32 | #include "dwarf2read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
d55e5aa6 TT |
35 | #include "dwarf-index-cache.h" |
36 | #include "dwarf-index-common.h" | |
f4382c45 | 37 | #include "dwarf2/leb.h" |
4de283e4 TT |
38 | #include "bfd.h" |
39 | #include "elf-bfd.h" | |
40 | #include "symtab.h" | |
41 | #include "gdbtypes.h" | |
42 | #include "objfiles.h" | |
d55e5aa6 | 43 | #include "dwarf2.h" |
4de283e4 TT |
44 | #include "buildsym.h" |
45 | #include "demangle.h" | |
46 | #include "gdb-demangle.h" | |
4de283e4 TT |
47 | #include "filenames.h" /* for DOSish file names */ |
48 | #include "macrotab.h" | |
49 | #include "language.h" | |
50 | #include "complaints.h" | |
d55e5aa6 TT |
51 | #include "dwarf2expr.h" |
52 | #include "dwarf2loc.h" | |
4de283e4 TT |
53 | #include "cp-support.h" |
54 | #include "hashtab.h" | |
55 | #include "command.h" | |
d55e5aa6 | 56 | #include "gdbcmd.h" |
4de283e4 TT |
57 | #include "block.h" |
58 | #include "addrmap.h" | |
59 | #include "typeprint.h" | |
60 | #include "psympriv.h" | |
4de283e4 | 61 | #include "c-lang.h" |
d55e5aa6 | 62 | #include "go-lang.h" |
4de283e4 TT |
63 | #include "valprint.h" |
64 | #include "gdbcore.h" /* for gnutarget */ | |
65 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
66 | #include "gdb_bfd.h" |
67 | #include "f-lang.h" | |
68 | #include "source.h" | |
4de283e4 | 69 | #include "build-id.h" |
d55e5aa6 | 70 | #include "namespace.h" |
268a13a5 TT |
71 | #include "gdbsupport/function-view.h" |
72 | #include "gdbsupport/gdb_optional.h" | |
73 | #include "gdbsupport/underlying.h" | |
268a13a5 | 74 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 75 | #include "filename-seen-cache.h" |
b32b108a | 76 | #include "producer.h" |
4de283e4 | 77 | #include <fcntl.h> |
4de283e4 | 78 | #include <algorithm> |
4de283e4 | 79 | #include <unordered_map> |
268a13a5 | 80 | #include "gdbsupport/selftest.h" |
c9317f21 | 81 | #include "rust-lang.h" |
268a13a5 | 82 | #include "gdbsupport/pathstuff.h" |
437afbb8 | 83 | |
73be47f5 DE |
84 | /* When == 1, print basic high level tracing messages. |
85 | When > 1, be more verbose. | |
b4f54984 DE |
86 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
87 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 88 | |
d97bc12b | 89 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 90 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 91 | |
27e0867f DE |
92 | /* When non-zero, dump line number entries as they are read in. */ |
93 | static unsigned int dwarf_line_debug = 0; | |
94 | ||
491144b5 CB |
95 | /* When true, cross-check physname against demangler. */ |
96 | static bool check_physname = false; | |
900e11f9 | 97 | |
491144b5 CB |
98 | /* When true, do not reject deprecated .gdb_index sections. */ |
99 | static bool use_deprecated_index_sections = false; | |
481860b3 | 100 | |
5bfd760d | 101 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 102 | |
f1e6e072 TT |
103 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
104 | ||
105 | static int dwarf2_locexpr_index; | |
106 | static int dwarf2_loclist_index; | |
107 | static int dwarf2_locexpr_block_index; | |
108 | static int dwarf2_loclist_block_index; | |
109 | ||
3f563c84 PA |
110 | /* An index into a (C++) symbol name component in a symbol name as |
111 | recorded in the mapped_index's symbol table. For each C++ symbol | |
112 | in the symbol table, we record one entry for the start of each | |
113 | component in the symbol in a table of name components, and then | |
114 | sort the table, in order to be able to binary search symbol names, | |
115 | ignoring leading namespaces, both completion and regular look up. | |
116 | For example, for symbol "A::B::C", we'll have an entry that points | |
117 | to "A::B::C", another that points to "B::C", and another for "C". | |
118 | Note that function symbols in GDB index have no parameter | |
119 | information, just the function/method names. You can convert a | |
120 | name_component to a "const char *" using the | |
121 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
122 | ||
123 | struct name_component | |
124 | { | |
125 | /* Offset in the symbol name where the component starts. Stored as | |
126 | a (32-bit) offset instead of a pointer to save memory and improve | |
127 | locality on 64-bit architectures. */ | |
128 | offset_type name_offset; | |
129 | ||
130 | /* The symbol's index in the symbol and constant pool tables of a | |
131 | mapped_index. */ | |
132 | offset_type idx; | |
133 | }; | |
134 | ||
44ed8f3e PA |
135 | /* Base class containing bits shared by both .gdb_index and |
136 | .debug_name indexes. */ | |
137 | ||
138 | struct mapped_index_base | |
139 | { | |
22ca247e TT |
140 | mapped_index_base () = default; |
141 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
142 | ||
44ed8f3e PA |
143 | /* The name_component table (a sorted vector). See name_component's |
144 | description above. */ | |
145 | std::vector<name_component> name_components; | |
146 | ||
147 | /* How NAME_COMPONENTS is sorted. */ | |
148 | enum case_sensitivity name_components_casing; | |
149 | ||
150 | /* Return the number of names in the symbol table. */ | |
151 | virtual size_t symbol_name_count () const = 0; | |
152 | ||
153 | /* Get the name of the symbol at IDX in the symbol table. */ | |
154 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
155 | ||
156 | /* Return whether the name at IDX in the symbol table should be | |
157 | ignored. */ | |
158 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
159 | { | |
160 | return false; | |
161 | } | |
162 | ||
163 | /* Build the symbol name component sorted vector, if we haven't | |
164 | yet. */ | |
165 | void build_name_components (); | |
166 | ||
167 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
168 | possible matches for LN_NO_PARAMS in the name component | |
169 | vector. */ | |
170 | std::pair<std::vector<name_component>::const_iterator, | |
171 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
172 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
173 | enum language lang) const; | |
44ed8f3e PA |
174 | |
175 | /* Prevent deleting/destroying via a base class pointer. */ | |
176 | protected: | |
177 | ~mapped_index_base() = default; | |
178 | }; | |
179 | ||
9291a0cd TT |
180 | /* A description of the mapped index. The file format is described in |
181 | a comment by the code that writes the index. */ | |
fc898b42 | 182 | struct mapped_index final : public mapped_index_base |
9291a0cd | 183 | { |
f00a2de2 PA |
184 | /* A slot/bucket in the symbol table hash. */ |
185 | struct symbol_table_slot | |
186 | { | |
187 | const offset_type name; | |
188 | const offset_type vec; | |
189 | }; | |
190 | ||
559a7a62 | 191 | /* Index data format version. */ |
3063847f | 192 | int version = 0; |
559a7a62 | 193 | |
f00a2de2 PA |
194 | /* The address table data. */ |
195 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 196 | |
3876f04e | 197 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 198 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 199 | |
9291a0cd | 200 | /* A pointer to the constant pool. */ |
3063847f | 201 | const char *constant_pool = nullptr; |
3f563c84 | 202 | |
44ed8f3e PA |
203 | bool symbol_name_slot_invalid (offset_type idx) const override |
204 | { | |
205 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 206 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 207 | } |
5c58de74 | 208 | |
3f563c84 PA |
209 | /* Convenience method to get at the name of the symbol at IDX in the |
210 | symbol table. */ | |
44ed8f3e | 211 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 212 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 213 | |
44ed8f3e PA |
214 | size_t symbol_name_count () const override |
215 | { return this->symbol_table.size (); } | |
9291a0cd TT |
216 | }; |
217 | ||
927aa2e7 JK |
218 | /* A description of the mapped .debug_names. |
219 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 220 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 221 | { |
ed2dc618 SM |
222 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
223 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
224 | {} | |
225 | ||
226 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
227 | bfd_endian dwarf5_byte_order; |
228 | bool dwarf5_is_dwarf64; | |
229 | bool augmentation_is_gdb; | |
230 | uint8_t offset_size; | |
231 | uint32_t cu_count = 0; | |
232 | uint32_t tu_count, bucket_count, name_count; | |
233 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
234 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
235 | const gdb_byte *name_table_string_offs_reordered; | |
236 | const gdb_byte *name_table_entry_offs_reordered; | |
237 | const gdb_byte *entry_pool; | |
238 | ||
239 | struct index_val | |
240 | { | |
241 | ULONGEST dwarf_tag; | |
242 | struct attr | |
243 | { | |
244 | /* Attribute name DW_IDX_*. */ | |
245 | ULONGEST dw_idx; | |
246 | ||
247 | /* Attribute form DW_FORM_*. */ | |
248 | ULONGEST form; | |
249 | ||
250 | /* Value if FORM is DW_FORM_implicit_const. */ | |
251 | LONGEST implicit_const; | |
252 | }; | |
253 | std::vector<attr> attr_vec; | |
254 | }; | |
255 | ||
256 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
257 | ||
258 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
259 | |
260 | /* Implementation of the mapped_index_base virtual interface, for | |
261 | the name_components cache. */ | |
262 | ||
263 | const char *symbol_name_at (offset_type idx) const override | |
264 | { return namei_to_name (idx); } | |
265 | ||
266 | size_t symbol_name_count () const override | |
267 | { return this->name_count; } | |
927aa2e7 JK |
268 | }; |
269 | ||
cd4fb1b2 | 270 | /* See dwarf2read.h. */ |
ed2dc618 | 271 | |
cd4fb1b2 | 272 | dwarf2_per_objfile * |
ed2dc618 SM |
273 | get_dwarf2_per_objfile (struct objfile *objfile) |
274 | { | |
5bfd760d | 275 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 276 | } |
c906108c | 277 | |
251d32d9 | 278 | /* Default names of the debugging sections. */ |
c906108c | 279 | |
233a11ab CS |
280 | /* Note that if the debugging section has been compressed, it might |
281 | have a name like .zdebug_info. */ | |
282 | ||
9cdd5dbd DE |
283 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
284 | { | |
251d32d9 TG |
285 | { ".debug_info", ".zdebug_info" }, |
286 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
287 | { ".debug_line", ".zdebug_line" }, | |
288 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 289 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 290 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 291 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 292 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 293 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 294 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 295 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 296 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 297 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 298 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
299 | { ".debug_frame", ".zdebug_frame" }, |
300 | { ".eh_frame", NULL }, | |
24d3216f | 301 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
302 | { ".debug_names", ".zdebug_names" }, |
303 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 304 | 23 |
251d32d9 | 305 | }; |
c906108c | 306 | |
80626a55 | 307 | /* List of DWO/DWP sections. */ |
3019eac3 | 308 | |
80626a55 | 309 | static const struct dwop_section_names |
3019eac3 DE |
310 | { |
311 | struct dwarf2_section_names abbrev_dwo; | |
312 | struct dwarf2_section_names info_dwo; | |
313 | struct dwarf2_section_names line_dwo; | |
314 | struct dwarf2_section_names loc_dwo; | |
43988095 | 315 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
316 | struct dwarf2_section_names macinfo_dwo; |
317 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
318 | struct dwarf2_section_names str_dwo; |
319 | struct dwarf2_section_names str_offsets_dwo; | |
320 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
321 | struct dwarf2_section_names cu_index; |
322 | struct dwarf2_section_names tu_index; | |
3019eac3 | 323 | } |
80626a55 | 324 | dwop_section_names = |
3019eac3 DE |
325 | { |
326 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
327 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
328 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
329 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 330 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
331 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
332 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
333 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
334 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
335 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
336 | { ".debug_cu_index", ".zdebug_cu_index" }, |
337 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
338 | }; |
339 | ||
c906108c SS |
340 | /* local data types */ |
341 | ||
107d2387 AC |
342 | /* The data in a compilation unit header, after target2host |
343 | translation, looks like this. */ | |
c906108c | 344 | struct comp_unit_head |
a738430d | 345 | { |
c764a876 | 346 | unsigned int length; |
a738430d | 347 | short version; |
a738430d MK |
348 | unsigned char addr_size; |
349 | unsigned char signed_addr_p; | |
9c541725 | 350 | sect_offset abbrev_sect_off; |
57349743 | 351 | |
a738430d MK |
352 | /* Size of file offsets; either 4 or 8. */ |
353 | unsigned int offset_size; | |
57349743 | 354 | |
a738430d MK |
355 | /* Size of the length field; either 4 or 12. */ |
356 | unsigned int initial_length_size; | |
57349743 | 357 | |
43988095 JK |
358 | enum dwarf_unit_type unit_type; |
359 | ||
a738430d MK |
360 | /* Offset to the first byte of this compilation unit header in the |
361 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 362 | sect_offset sect_off; |
57349743 | 363 | |
d00adf39 DE |
364 | /* Offset to first die in this cu from the start of the cu. |
365 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 366 | cu_offset first_die_cu_offset; |
43988095 | 367 | |
a084a2a6 AT |
368 | |
369 | /* 64-bit signature of this unit. For type units, it denotes the signature of | |
370 | the type (DW_UT_type in DWARF 4, additionally DW_UT_split_type in DWARF 5). | |
371 | Also used in DWARF 5, to denote the dwo id when the unit type is | |
372 | DW_UT_skeleton or DW_UT_split_compile. */ | |
43988095 JK |
373 | ULONGEST signature; |
374 | ||
375 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 376 | cu_offset type_cu_offset_in_tu; |
a738430d | 377 | }; |
c906108c | 378 | |
3da10d80 KS |
379 | /* Type used for delaying computation of method physnames. |
380 | See comments for compute_delayed_physnames. */ | |
381 | struct delayed_method_info | |
382 | { | |
383 | /* The type to which the method is attached, i.e., its parent class. */ | |
384 | struct type *type; | |
385 | ||
386 | /* The index of the method in the type's function fieldlists. */ | |
387 | int fnfield_index; | |
388 | ||
389 | /* The index of the method in the fieldlist. */ | |
390 | int index; | |
391 | ||
392 | /* The name of the DIE. */ | |
393 | const char *name; | |
394 | ||
395 | /* The DIE associated with this method. */ | |
396 | struct die_info *die; | |
397 | }; | |
398 | ||
e7c27a73 DJ |
399 | /* Internal state when decoding a particular compilation unit. */ |
400 | struct dwarf2_cu | |
401 | { | |
fcd3b13d SM |
402 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
403 | ~dwarf2_cu (); | |
404 | ||
405 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
406 | ||
c24bdb02 KS |
407 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
408 | Create the set of symtabs used by this TU, or if this TU is sharing | |
409 | symtabs with another TU and the symtabs have already been created | |
410 | then restore those symtabs in the line header. | |
411 | We don't need the pc/line-number mapping for type units. */ | |
412 | void setup_type_unit_groups (struct die_info *die); | |
413 | ||
414 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
415 | buildsym_compunit constructor. */ | |
416 | struct compunit_symtab *start_symtab (const char *name, | |
417 | const char *comp_dir, | |
418 | CORE_ADDR low_pc); | |
419 | ||
420 | /* Reset the builder. */ | |
421 | void reset_builder () { m_builder.reset (); } | |
422 | ||
d00adf39 | 423 | /* The header of the compilation unit. */ |
fcd3b13d | 424 | struct comp_unit_head header {}; |
e142c38c | 425 | |
d00adf39 | 426 | /* Base address of this compilation unit. */ |
fcd3b13d | 427 | CORE_ADDR base_address = 0; |
d00adf39 DE |
428 | |
429 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 430 | int base_known = 0; |
d00adf39 | 431 | |
e142c38c | 432 | /* The language we are debugging. */ |
fcd3b13d SM |
433 | enum language language = language_unknown; |
434 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 435 | |
fcd3b13d | 436 | const char *producer = nullptr; |
b0f35d58 | 437 | |
c24bdb02 | 438 | private: |
804d2729 TT |
439 | /* The symtab builder for this CU. This is only non-NULL when full |
440 | symbols are being read. */ | |
c24bdb02 | 441 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 442 | |
c24bdb02 | 443 | public: |
e142c38c DJ |
444 | /* The generic symbol table building routines have separate lists for |
445 | file scope symbols and all all other scopes (local scopes). So | |
446 | we need to select the right one to pass to add_symbol_to_list(). | |
447 | We do it by keeping a pointer to the correct list in list_in_scope. | |
448 | ||
449 | FIXME: The original dwarf code just treated the file scope as the | |
450 | first local scope, and all other local scopes as nested local | |
451 | scopes, and worked fine. Check to see if we really need to | |
452 | distinguish these in buildsym.c. */ | |
fcd3b13d | 453 | struct pending **list_in_scope = nullptr; |
e142c38c | 454 | |
b64f50a1 JK |
455 | /* Hash table holding all the loaded partial DIEs |
456 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 457 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
458 | |
459 | /* Storage for things with the same lifetime as this read-in compilation | |
460 | unit, including partial DIEs. */ | |
fcd3b13d | 461 | auto_obstack comp_unit_obstack; |
72bf9492 | 462 | |
ae038cb0 DJ |
463 | /* When multiple dwarf2_cu structures are living in memory, this field |
464 | chains them all together, so that they can be released efficiently. | |
465 | We will probably also want a generation counter so that most-recently-used | |
466 | compilation units are cached... */ | |
fcd3b13d | 467 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 468 | |
69d751e3 | 469 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
470 | struct dwarf2_per_cu_data *per_cu; |
471 | ||
472 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 473 | int last_used = 0; |
ae038cb0 | 474 | |
b64f50a1 JK |
475 | /* A hash table of DIE cu_offset for following references with |
476 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 477 | htab_t die_hash = nullptr; |
10b3939b DJ |
478 | |
479 | /* Full DIEs if read in. */ | |
fcd3b13d | 480 | struct die_info *dies = nullptr; |
10b3939b DJ |
481 | |
482 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
483 | units referenced by this one. Only set during full symbol processing; | |
484 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 485 | htab_t dependencies = nullptr; |
10b3939b | 486 | |
cb1df416 | 487 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 488 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
489 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
490 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
491 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
492 | to the line header as long as this DIE is being processed. See | |
493 | process_die_scope. */ | |
fcd3b13d | 494 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 495 | |
3da10d80 KS |
496 | /* A list of methods which need to have physnames computed |
497 | after all type information has been read. */ | |
c89b44cd | 498 | std::vector<delayed_method_info> method_list; |
3da10d80 | 499 | |
96408a79 | 500 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 501 | htab_t call_site_htab = nullptr; |
96408a79 | 502 | |
034e5797 DE |
503 | /* Non-NULL if this CU came from a DWO file. |
504 | There is an invariant here that is important to remember: | |
505 | Except for attributes copied from the top level DIE in the "main" | |
506 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 507 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
508 | Either there isn't a DWO file (in which case this is NULL and the point |
509 | is moot), or there is and either we're not going to read it (in which | |
510 | case this is NULL) or there is and we are reading it (in which case this | |
511 | is non-NULL). */ | |
fcd3b13d | 512 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 513 | |
18a8505e | 514 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 515 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 516 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 517 | |
18a8505e | 518 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 519 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 520 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
521 | be used without needing to know whether DWO files are in use or not. |
522 | N.B. This does not apply to DW_AT_ranges appearing in | |
523 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
524 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 525 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 526 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 527 | ULONGEST ranges_base = 0; |
2e3cf129 | 528 | |
c9317f21 TT |
529 | /* When reading debug info generated by older versions of rustc, we |
530 | have to rewrite some union types to be struct types with a | |
531 | variant part. This rewriting must be done after the CU is fully | |
532 | read in, because otherwise at the point of rewriting some struct | |
533 | type might not have been fully processed. So, we keep a list of | |
534 | all such types here and process them after expansion. */ | |
535 | std::vector<struct type *> rust_unions; | |
536 | ||
18a8505e AT |
537 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
538 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
539 | value is often implicit and is the size of the header of | |
540 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
541 | gdb::optional<ULONGEST> str_offsets_base; | |
542 | ||
ae038cb0 | 543 | /* Mark used when releasing cached dies. */ |
9068261f | 544 | bool mark : 1; |
ae038cb0 | 545 | |
8be455d7 JK |
546 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
547 | This test is imperfect as there may exist optimized debug code not using | |
548 | any location list and still facing inlining issues if handled as | |
549 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 550 | bool has_loclist : 1; |
ba919b58 | 551 | |
9068261f | 552 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
553 | if all the producer_is_* fields are valid. This information is cached |
554 | because profiling CU expansion showed excessive time spent in | |
555 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
556 | bool checked_producer : 1; |
557 | bool producer_is_gxx_lt_4_6 : 1; | |
558 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 559 | bool producer_is_icc : 1; |
9068261f | 560 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 561 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 562 | |
9068261f | 563 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
564 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
565 | this information, but later versions do. */ | |
566 | ||
9068261f | 567 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
568 | |
569 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
570 | |
571 | /* If this CU was inherited by another CU (via specification, | |
572 | abstract_origin, etc), this is the ancestor CU. */ | |
573 | dwarf2_cu *ancestor; | |
574 | ||
575 | /* Get the buildsym_compunit for this CU. */ | |
576 | buildsym_compunit *get_builder () | |
577 | { | |
578 | /* If this CU has a builder associated with it, use that. */ | |
579 | if (m_builder != nullptr) | |
580 | return m_builder.get (); | |
581 | ||
582 | /* Otherwise, search ancestors for a valid builder. */ | |
583 | if (ancestor != nullptr) | |
584 | return ancestor->get_builder (); | |
585 | ||
586 | return nullptr; | |
587 | } | |
e7c27a73 DJ |
588 | }; |
589 | ||
094b34ac DE |
590 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
591 | This includes type_unit_group and quick_file_names. */ | |
592 | ||
593 | struct stmt_list_hash | |
594 | { | |
595 | /* The DWO unit this table is from or NULL if there is none. */ | |
596 | struct dwo_unit *dwo_unit; | |
597 | ||
598 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 599 | sect_offset line_sect_off; |
094b34ac DE |
600 | }; |
601 | ||
f4dc4d17 DE |
602 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
603 | an object of this type. */ | |
604 | ||
605 | struct type_unit_group | |
606 | { | |
0186c6a7 | 607 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
608 | To simplify things we create an artificial CU that "includes" all the |
609 | type units using this stmt_list so that the rest of the code still has | |
610 | a "per_cu" handle on the symtab. | |
611 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 612 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
613 | struct dwarf2_per_cu_data per_cu; |
614 | ||
0186c6a7 DE |
615 | /* The TUs that share this DW_AT_stmt_list entry. |
616 | This is added to while parsing type units to build partial symtabs, | |
617 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 618 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 619 | |
43f3e411 | 620 | /* The compunit symtab. |
094b34ac | 621 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
622 | so we create an essentially anonymous symtab as the compunit symtab. */ |
623 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 624 | |
094b34ac DE |
625 | /* The data used to construct the hash key. */ |
626 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
627 | |
628 | /* The number of symtabs from the line header. | |
629 | The value here must match line_header.num_file_names. */ | |
630 | unsigned int num_symtabs; | |
631 | ||
632 | /* The symbol tables for this TU (obtained from the files listed in | |
633 | DW_AT_stmt_list). | |
634 | WARNING: The order of entries here must match the order of entries | |
635 | in the line header. After the first TU using this type_unit_group, the | |
636 | line header for the subsequent TUs is recreated from this. This is done | |
637 | because we need to use the same symtabs for each TU using the same | |
638 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
639 | there's no guarantee the line header doesn't have duplicate entries. */ | |
640 | struct symtab **symtabs; | |
641 | }; | |
642 | ||
73869dc2 | 643 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
644 | |
645 | struct dwo_sections | |
646 | { | |
647 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
648 | struct dwarf2_section_info line; |
649 | struct dwarf2_section_info loc; | |
43988095 | 650 | struct dwarf2_section_info loclists; |
09262596 DE |
651 | struct dwarf2_section_info macinfo; |
652 | struct dwarf2_section_info macro; | |
3019eac3 DE |
653 | struct dwarf2_section_info str; |
654 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
655 | /* In the case of a virtual DWO file, these two are unused. */ |
656 | struct dwarf2_section_info info; | |
fd5866f6 | 657 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
658 | }; |
659 | ||
c88ee1f0 | 660 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
661 | |
662 | struct dwo_unit | |
663 | { | |
664 | /* Backlink to the containing struct dwo_file. */ | |
665 | struct dwo_file *dwo_file; | |
666 | ||
667 | /* The "id" that distinguishes this CU/TU. | |
668 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
669 | Since signatures came first, we stick with it for consistency. */ | |
670 | ULONGEST signature; | |
671 | ||
672 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 673 | struct dwarf2_section_info *section; |
3019eac3 | 674 | |
9c541725 PA |
675 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
676 | sect_offset sect_off; | |
3019eac3 DE |
677 | unsigned int length; |
678 | ||
679 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
680 | cu_offset type_offset_in_tu; | |
681 | }; | |
682 | ||
73869dc2 DE |
683 | /* include/dwarf2.h defines the DWP section codes. |
684 | It defines a max value but it doesn't define a min value, which we | |
685 | use for error checking, so provide one. */ | |
686 | ||
687 | enum dwp_v2_section_ids | |
688 | { | |
689 | DW_SECT_MIN = 1 | |
690 | }; | |
691 | ||
80626a55 | 692 | /* Data for one DWO file. |
57d63ce2 DE |
693 | |
694 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
695 | appears in a DWP file). DWP files don't really have DWO files per se - | |
696 | comdat folding of types "loses" the DWO file they came from, and from | |
697 | a high level view DWP files appear to contain a mass of random types. | |
698 | However, to maintain consistency with the non-DWP case we pretend DWP | |
699 | files contain virtual DWO files, and we assign each TU with one virtual | |
700 | DWO file (generally based on the line and abbrev section offsets - | |
701 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
702 | |
703 | struct dwo_file | |
704 | { | |
51ac9db5 SM |
705 | dwo_file () = default; |
706 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
707 | ||
18a8505e | 708 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
709 | For virtual DWO files the name is constructed from the section offsets |
710 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
711 | from related CU+TUs. */ | |
51ac9db5 | 712 | const char *dwo_name = nullptr; |
0ac5b59e DE |
713 | |
714 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 715 | const char *comp_dir = nullptr; |
3019eac3 | 716 | |
80626a55 DE |
717 | /* The bfd, when the file is open. Otherwise this is NULL. |
718 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 719 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 720 | |
73869dc2 DE |
721 | /* The sections that make up this DWO file. |
722 | Remember that for virtual DWO files in DWP V2, these are virtual | |
723 | sections (for lack of a better name). */ | |
51ac9db5 | 724 | struct dwo_sections sections {}; |
3019eac3 | 725 | |
33c5cd75 DB |
726 | /* The CUs in the file. |
727 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
728 | an extension to handle LLVM's Link Time Optimization output (where | |
729 | multiple source files may be compiled into a single object/dwo pair). */ | |
51ac9db5 | 730 | htab_t cus {}; |
3019eac3 DE |
731 | |
732 | /* Table of TUs in the file. | |
733 | Each element is a struct dwo_unit. */ | |
51ac9db5 | 734 | htab_t tus {}; |
3019eac3 DE |
735 | }; |
736 | ||
80626a55 DE |
737 | /* These sections are what may appear in a DWP file. */ |
738 | ||
739 | struct dwp_sections | |
740 | { | |
73869dc2 | 741 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
742 | struct dwarf2_section_info str; |
743 | struct dwarf2_section_info cu_index; | |
744 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
745 | |
746 | /* These are only used by DWP version 2 files. | |
747 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
748 | sections are referenced by section number, and are not recorded here. | |
749 | In DWP version 2 there is at most one copy of all these sections, each | |
750 | section being (effectively) comprised of the concatenation of all of the | |
751 | individual sections that exist in the version 1 format. | |
752 | To keep the code simple we treat each of these concatenated pieces as a | |
753 | section itself (a virtual section?). */ | |
754 | struct dwarf2_section_info abbrev; | |
755 | struct dwarf2_section_info info; | |
756 | struct dwarf2_section_info line; | |
757 | struct dwarf2_section_info loc; | |
758 | struct dwarf2_section_info macinfo; | |
759 | struct dwarf2_section_info macro; | |
760 | struct dwarf2_section_info str_offsets; | |
761 | struct dwarf2_section_info types; | |
80626a55 DE |
762 | }; |
763 | ||
73869dc2 DE |
764 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
765 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 766 | |
73869dc2 | 767 | struct virtual_v1_dwo_sections |
80626a55 DE |
768 | { |
769 | struct dwarf2_section_info abbrev; | |
770 | struct dwarf2_section_info line; | |
771 | struct dwarf2_section_info loc; | |
772 | struct dwarf2_section_info macinfo; | |
773 | struct dwarf2_section_info macro; | |
774 | struct dwarf2_section_info str_offsets; | |
775 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 776 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
777 | struct dwarf2_section_info info_or_types; |
778 | }; | |
779 | ||
73869dc2 DE |
780 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
781 | In version 2, the sections of the DWO files are concatenated together | |
782 | and stored in one section of that name. Thus each ELF section contains | |
783 | several "virtual" sections. */ | |
784 | ||
785 | struct virtual_v2_dwo_sections | |
786 | { | |
787 | bfd_size_type abbrev_offset; | |
788 | bfd_size_type abbrev_size; | |
789 | ||
790 | bfd_size_type line_offset; | |
791 | bfd_size_type line_size; | |
792 | ||
793 | bfd_size_type loc_offset; | |
794 | bfd_size_type loc_size; | |
795 | ||
796 | bfd_size_type macinfo_offset; | |
797 | bfd_size_type macinfo_size; | |
798 | ||
799 | bfd_size_type macro_offset; | |
800 | bfd_size_type macro_size; | |
801 | ||
802 | bfd_size_type str_offsets_offset; | |
803 | bfd_size_type str_offsets_size; | |
804 | ||
805 | /* Each DWP hash table entry records one CU or one TU. | |
806 | That is recorded here, and copied to dwo_unit.section. */ | |
807 | bfd_size_type info_or_types_offset; | |
808 | bfd_size_type info_or_types_size; | |
809 | }; | |
810 | ||
80626a55 DE |
811 | /* Contents of DWP hash tables. */ |
812 | ||
813 | struct dwp_hash_table | |
814 | { | |
73869dc2 | 815 | uint32_t version, nr_columns; |
80626a55 | 816 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
817 | const gdb_byte *hash_table, *unit_table; |
818 | union | |
819 | { | |
820 | struct | |
821 | { | |
822 | const gdb_byte *indices; | |
823 | } v1; | |
824 | struct | |
825 | { | |
826 | /* This is indexed by column number and gives the id of the section | |
827 | in that column. */ | |
828 | #define MAX_NR_V2_DWO_SECTIONS \ | |
829 | (1 /* .debug_info or .debug_types */ \ | |
830 | + 1 /* .debug_abbrev */ \ | |
831 | + 1 /* .debug_line */ \ | |
832 | + 1 /* .debug_loc */ \ | |
833 | + 1 /* .debug_str_offsets */ \ | |
834 | + 1 /* .debug_macro or .debug_macinfo */) | |
835 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
836 | const gdb_byte *offsets; | |
837 | const gdb_byte *sizes; | |
838 | } v2; | |
839 | } section_pool; | |
80626a55 DE |
840 | }; |
841 | ||
842 | /* Data for one DWP file. */ | |
843 | ||
844 | struct dwp_file | |
845 | { | |
400174b1 TT |
846 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
847 | : name (name_), | |
848 | dbfd (std::move (abfd)) | |
849 | { | |
850 | } | |
851 | ||
80626a55 DE |
852 | /* Name of the file. */ |
853 | const char *name; | |
854 | ||
73869dc2 | 855 | /* File format version. */ |
400174b1 | 856 | int version = 0; |
73869dc2 | 857 | |
93417882 | 858 | /* The bfd. */ |
400174b1 | 859 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
860 | |
861 | /* Section info for this file. */ | |
400174b1 | 862 | struct dwp_sections sections {}; |
80626a55 | 863 | |
57d63ce2 | 864 | /* Table of CUs in the file. */ |
400174b1 | 865 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
866 | |
867 | /* Table of TUs in the file. */ | |
400174b1 | 868 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 869 | |
19ac8c2e | 870 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
871 | htab_t loaded_cus {}; |
872 | htab_t loaded_tus {}; | |
80626a55 | 873 | |
73869dc2 DE |
874 | /* Table to map ELF section numbers to their sections. |
875 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
876 | unsigned int num_sections = 0; |
877 | asection **elf_sections = nullptr; | |
80626a55 DE |
878 | }; |
879 | ||
0963b4bd MS |
880 | /* Struct used to pass misc. parameters to read_die_and_children, et |
881 | al. which are used for both .debug_info and .debug_types dies. | |
882 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 883 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
884 | |
885 | struct die_reader_specs | |
886 | { | |
a32a8923 | 887 | /* The bfd of die_section. */ |
93311388 DE |
888 | bfd* abfd; |
889 | ||
890 | /* The CU of the DIE we are parsing. */ | |
891 | struct dwarf2_cu *cu; | |
892 | ||
80626a55 | 893 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
894 | struct dwo_file *dwo_file; |
895 | ||
dee91e82 | 896 | /* The section the die comes from. |
3019eac3 | 897 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
898 | struct dwarf2_section_info *die_section; |
899 | ||
900 | /* die_section->buffer. */ | |
d521ce57 | 901 | const gdb_byte *buffer; |
f664829e DE |
902 | |
903 | /* The end of the buffer. */ | |
904 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
905 | |
906 | /* The value of the DW_AT_comp_dir attribute. */ | |
907 | const char *comp_dir; | |
685af9cd TT |
908 | |
909 | /* The abbreviation table to use when reading the DIEs. */ | |
910 | struct abbrev_table *abbrev_table; | |
93311388 DE |
911 | }; |
912 | ||
c0ab21c2 TT |
913 | /* A subclass of die_reader_specs that holds storage and has complex |
914 | constructor and destructor behavior. */ | |
915 | ||
916 | class cutu_reader : public die_reader_specs | |
917 | { | |
918 | public: | |
919 | ||
920 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
921 | struct abbrev_table *abbrev_table, | |
922 | int use_existing_cu, int keep, | |
923 | bool skip_partial); | |
924 | ||
925 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
926 | struct dwarf2_cu *parent_cu = nullptr, | |
927 | struct dwo_file *dwo_file = nullptr); | |
928 | ||
929 | ~cutu_reader (); | |
930 | ||
931 | DISABLE_COPY_AND_ASSIGN (cutu_reader); | |
932 | ||
933 | const gdb_byte *info_ptr = nullptr; | |
934 | struct die_info *comp_unit_die = nullptr; | |
935 | int has_children = 0; | |
936 | bool dummy_p = false; | |
937 | ||
938 | private: | |
939 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
940 | int use_existing_cu, int keep); | |
941 | ||
942 | struct dwarf2_per_cu_data *m_this_cu; | |
943 | int m_keep = 0; | |
944 | std::unique_ptr<dwarf2_cu> m_new_cu; | |
945 | ||
946 | /* The ordinary abbreviation table. */ | |
947 | abbrev_table_up m_abbrev_table_holder; | |
948 | ||
949 | /* The DWO abbreviation table. */ | |
950 | abbrev_table_up m_dwo_abbrev_table; | |
951 | }; | |
dee91e82 | 952 | |
7ba99d21 AT |
953 | /* dir_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 and |
954 | later. */ | |
955 | typedef int dir_index; | |
ecfb656c | 956 | |
7ba99d21 AT |
957 | /* file_name_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 |
958 | and later. */ | |
959 | typedef int file_name_index; | |
ecfb656c | 960 | |
52059ffd TT |
961 | struct file_entry |
962 | { | |
fff8551c PA |
963 | file_entry () = default; |
964 | ||
ecfb656c | 965 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
966 | unsigned int mod_time_, unsigned int length_) |
967 | : name (name_), | |
ecfb656c | 968 | d_index (d_index_), |
fff8551c PA |
969 | mod_time (mod_time_), |
970 | length (length_) | |
971 | {} | |
972 | ||
ecfb656c PA |
973 | /* Return the include directory at D_INDEX stored in LH. Returns |
974 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
975 | const char *include_dir (const line_header *lh) const; |
976 | ||
fff8551c PA |
977 | /* The file name. Note this is an observing pointer. The memory is |
978 | owned by debug_line_buffer. */ | |
979 | const char *name {}; | |
980 | ||
8c43009f | 981 | /* The directory index (1-based). */ |
ecfb656c | 982 | dir_index d_index {}; |
fff8551c PA |
983 | |
984 | unsigned int mod_time {}; | |
985 | ||
986 | unsigned int length {}; | |
987 | ||
988 | /* True if referenced by the Line Number Program. */ | |
989 | bool included_p {}; | |
990 | ||
83769d0b | 991 | /* The associated symbol table, if any. */ |
fff8551c | 992 | struct symtab *symtab {}; |
52059ffd TT |
993 | }; |
994 | ||
debd256d JB |
995 | /* The line number information for a compilation unit (found in the |
996 | .debug_line section) begins with a "statement program header", | |
997 | which contains the following information. */ | |
998 | struct line_header | |
999 | { | |
fff8551c PA |
1000 | line_header () |
1001 | : offset_in_dwz {} | |
1002 | {} | |
1003 | ||
1004 | /* Add an entry to the include directory table. */ | |
1005 | void add_include_dir (const char *include_dir); | |
1006 | ||
1007 | /* Add an entry to the file name table. */ | |
ecfb656c | 1008 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1009 | unsigned int mod_time, unsigned int length); |
1010 | ||
7ba99d21 AT |
1011 | /* Return the include dir at INDEX (0-based in DWARF 5 and 1-based before). |
1012 | Returns NULL if INDEX is out of bounds. */ | |
ecfb656c | 1013 | const char *include_dir_at (dir_index index) const |
8c43009f | 1014 | { |
7ba99d21 AT |
1015 | int vec_index; |
1016 | if (version >= 5) | |
1017 | vec_index = index; | |
1018 | else | |
1019 | vec_index = index - 1; | |
1020 | if (vec_index < 0 || vec_index >= m_include_dirs.size ()) | |
8c43009f | 1021 | return NULL; |
7ba99d21 | 1022 | return m_include_dirs[vec_index]; |
8c43009f PA |
1023 | } |
1024 | ||
7ba99d21 | 1025 | bool is_valid_file_index (int file_index) |
8c43009f | 1026 | { |
7ba99d21 AT |
1027 | if (version >= 5) |
1028 | return 0 <= file_index && file_index < file_names_size (); | |
1029 | return 1 <= file_index && file_index <= file_names_size (); | |
1030 | } | |
ecfb656c | 1031 | |
7ba99d21 AT |
1032 | /* Return the file name at INDEX (0-based in DWARF 5 and 1-based before). |
1033 | Returns NULL if INDEX is out of bounds. */ | |
1034 | file_entry *file_name_at (file_name_index index) | |
1035 | { | |
1036 | int vec_index; | |
1037 | if (version >= 5) | |
1038 | vec_index = index; | |
1039 | else | |
1040 | vec_index = index - 1; | |
1041 | if (vec_index < 0 || vec_index >= m_file_names.size ()) | |
fff8551c | 1042 | return NULL; |
7ba99d21 | 1043 | return &m_file_names[vec_index]; |
fff8551c PA |
1044 | } |
1045 | ||
7ba99d21 AT |
1046 | /* The indexes are 0-based in DWARF 5 and 1-based in DWARF 4. Therefore, |
1047 | this method should only be used to iterate through all file entries in an | |
1048 | index-agnostic manner. */ | |
1049 | std::vector<file_entry> &file_names () | |
1050 | { return m_file_names; } | |
1051 | ||
527f3840 | 1052 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1053 | sect_offset sect_off {}; |
527f3840 JK |
1054 | |
1055 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1056 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1057 | ||
1058 | unsigned int total_length {}; | |
1059 | unsigned short version {}; | |
1060 | unsigned int header_length {}; | |
1061 | unsigned char minimum_instruction_length {}; | |
1062 | unsigned char maximum_ops_per_instruction {}; | |
1063 | unsigned char default_is_stmt {}; | |
1064 | int line_base {}; | |
1065 | unsigned char line_range {}; | |
1066 | unsigned char opcode_base {}; | |
debd256d JB |
1067 | |
1068 | /* standard_opcode_lengths[i] is the number of operands for the | |
1069 | standard opcode whose value is i. This means that | |
1070 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1071 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1072 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1073 | |
7ba99d21 AT |
1074 | int file_names_size () |
1075 | { return m_file_names.size(); } | |
debd256d JB |
1076 | |
1077 | /* The start and end of the statement program following this | |
6502dd73 | 1078 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1079 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
7ba99d21 AT |
1080 | |
1081 | private: | |
1082 | /* The include_directories table. Note these are observing | |
1083 | pointers. The memory is owned by debug_line_buffer. */ | |
1084 | std::vector<const char *> m_include_dirs; | |
1085 | ||
1086 | /* The file_names table. This is private because the meaning of indexes | |
1087 | differs among DWARF versions (The first valid index is 1 in DWARF 4 and | |
1088 | before, and is 0 in DWARF 5 and later). So the client should use | |
1089 | file_name_at method for access. */ | |
1090 | std::vector<file_entry> m_file_names; | |
debd256d | 1091 | }; |
c906108c | 1092 | |
fff8551c PA |
1093 | typedef std::unique_ptr<line_header> line_header_up; |
1094 | ||
8c43009f PA |
1095 | const char * |
1096 | file_entry::include_dir (const line_header *lh) const | |
1097 | { | |
ecfb656c | 1098 | return lh->include_dir_at (d_index); |
8c43009f PA |
1099 | } |
1100 | ||
c906108c | 1101 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1102 | need this much information. */ |
6f06d47b | 1103 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1104 | { |
6f06d47b YQ |
1105 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1106 | ||
1107 | /* Disable assign but still keep copy ctor, which is needed | |
1108 | load_partial_dies. */ | |
1109 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1110 | ||
52356b79 YQ |
1111 | /* Adjust the partial die before generating a symbol for it. This |
1112 | function may set the is_external flag or change the DIE's | |
1113 | name. */ | |
1114 | void fixup (struct dwarf2_cu *cu); | |
1115 | ||
48fbe735 YQ |
1116 | /* Read a minimal amount of information into the minimal die |
1117 | structure. */ | |
1118 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1119 | const struct abbrev_info &abbrev, | |
1120 | const gdb_byte *info_ptr); | |
1121 | ||
72bf9492 | 1122 | /* Offset of this DIE. */ |
6f06d47b | 1123 | const sect_offset sect_off; |
72bf9492 DJ |
1124 | |
1125 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1126 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1127 | |
72bf9492 | 1128 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1129 | const unsigned int has_children : 1; |
1130 | ||
72bf9492 DJ |
1131 | unsigned int is_external : 1; |
1132 | unsigned int is_declaration : 1; | |
1133 | unsigned int has_type : 1; | |
1134 | unsigned int has_specification : 1; | |
1135 | unsigned int has_pc_info : 1; | |
481860b3 | 1136 | unsigned int may_be_inlined : 1; |
72bf9492 | 1137 | |
0c1b455e TT |
1138 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1139 | unsigned int main_subprogram : 1; | |
1140 | ||
72bf9492 DJ |
1141 | /* Flag set if the SCOPE field of this structure has been |
1142 | computed. */ | |
1143 | unsigned int scope_set : 1; | |
1144 | ||
fa4028e9 JB |
1145 | /* Flag set if the DIE has a byte_size attribute. */ |
1146 | unsigned int has_byte_size : 1; | |
1147 | ||
ff908ebf AW |
1148 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1149 | unsigned int has_const_value : 1; | |
1150 | ||
98bfdba5 PA |
1151 | /* Flag set if any of the DIE's children are template arguments. */ |
1152 | unsigned int has_template_arguments : 1; | |
1153 | ||
52356b79 | 1154 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1155 | unsigned int fixup_called : 1; |
1156 | ||
36586728 TT |
1157 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1158 | unsigned int is_dwz : 1; | |
1159 | ||
1160 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1161 | unsigned int spec_is_dwz : 1; | |
1162 | ||
72bf9492 | 1163 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1164 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1165 | const char *name = nullptr; |
72bf9492 | 1166 | |
abc72ce4 | 1167 | /* The linkage name, if present. */ |
6f06d47b | 1168 | const char *linkage_name = nullptr; |
abc72ce4 | 1169 | |
72bf9492 DJ |
1170 | /* The scope to prepend to our children. This is generally |
1171 | allocated on the comp_unit_obstack, so will disappear | |
1172 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1173 | const char *scope = nullptr; |
72bf9492 | 1174 | |
95554aad TT |
1175 | /* Some data associated with the partial DIE. The tag determines |
1176 | which field is live. */ | |
1177 | union | |
1178 | { | |
1179 | /* The location description associated with this DIE, if any. */ | |
1180 | struct dwarf_block *locdesc; | |
1181 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1182 | sect_offset sect_off; |
6f06d47b | 1183 | } d {}; |
72bf9492 DJ |
1184 | |
1185 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1186 | CORE_ADDR lowpc = 0; |
1187 | CORE_ADDR highpc = 0; | |
72bf9492 | 1188 | |
93311388 | 1189 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1190 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1191 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1192 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1193 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1194 | |
1195 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1196 | DW_AT_specification (or DW_AT_abstract_origin or | |
1197 | DW_AT_extension). */ | |
6f06d47b | 1198 | sect_offset spec_offset {}; |
72bf9492 DJ |
1199 | |
1200 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1201 | if any. */ | |
6f06d47b YQ |
1202 | struct partial_die_info *die_parent = nullptr; |
1203 | struct partial_die_info *die_child = nullptr; | |
1204 | struct partial_die_info *die_sibling = nullptr; | |
1205 | ||
1206 | friend struct partial_die_info * | |
1207 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1208 | ||
1209 | private: | |
1210 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1211 | partial_die_info (sect_offset sect_off) | |
1212 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1213 | { | |
1214 | } | |
1215 | ||
1216 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1217 | int has_children_) | |
1218 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1219 | { | |
1220 | is_external = 0; | |
1221 | is_declaration = 0; | |
1222 | has_type = 0; | |
1223 | has_specification = 0; | |
1224 | has_pc_info = 0; | |
1225 | may_be_inlined = 0; | |
1226 | main_subprogram = 0; | |
1227 | scope_set = 0; | |
1228 | has_byte_size = 0; | |
1229 | has_const_value = 0; | |
1230 | has_template_arguments = 0; | |
1231 | fixup_called = 0; | |
1232 | is_dwz = 0; | |
1233 | spec_is_dwz = 0; | |
1234 | } | |
c906108c SS |
1235 | }; |
1236 | ||
0963b4bd | 1237 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1238 | struct die_info |
1239 | { | |
76815b17 DE |
1240 | /* DWARF-2 tag for this DIE. */ |
1241 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1242 | ||
1243 | /* Number of attributes */ | |
98bfdba5 PA |
1244 | unsigned char num_attrs; |
1245 | ||
1246 | /* True if we're presently building the full type name for the | |
1247 | type derived from this DIE. */ | |
1248 | unsigned char building_fullname : 1; | |
76815b17 | 1249 | |
adde2bff DE |
1250 | /* True if this die is in process. PR 16581. */ |
1251 | unsigned char in_process : 1; | |
1252 | ||
76815b17 DE |
1253 | /* Abbrev number */ |
1254 | unsigned int abbrev; | |
1255 | ||
93311388 | 1256 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1257 | sect_offset sect_off; |
78ba4af6 JB |
1258 | |
1259 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1260 | points to this die's parent; CHILD points to the first child of | |
1261 | this node; and all the children of a given node are chained | |
4950bc1c | 1262 | together via their SIBLING fields. */ |
639d11d3 DC |
1263 | struct die_info *child; /* Its first child, if any. */ |
1264 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1265 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1266 | |
b60c80d6 DJ |
1267 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1268 | zero, but it's not common and zero-sized arrays are not | |
1269 | sufficiently portable C. */ | |
1270 | struct attribute attrs[1]; | |
c906108c SS |
1271 | }; |
1272 | ||
c906108c SS |
1273 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1274 | but this would require a corresponding change in unpack_field_as_long | |
1275 | and friends. */ | |
1276 | static int bits_per_byte = 8; | |
1277 | ||
2ddeaf8a TT |
1278 | /* When reading a variant or variant part, we track a bit more |
1279 | information about the field, and store it in an object of this | |
1280 | type. */ | |
1281 | ||
1282 | struct variant_field | |
1283 | { | |
1284 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1285 | value. */ | |
1286 | ULONGEST discriminant_value; | |
1287 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1288 | default branch. */ | |
1289 | bool default_branch; | |
1290 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1291 | field is the discriminant. */ | |
1292 | bool is_discriminant; | |
1293 | }; | |
1294 | ||
52059ffd TT |
1295 | struct nextfield |
1296 | { | |
be2daae6 TT |
1297 | int accessibility = 0; |
1298 | int virtuality = 0; | |
2ddeaf8a | 1299 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1300 | struct variant_field variant {}; |
1301 | struct field field {}; | |
52059ffd TT |
1302 | }; |
1303 | ||
1304 | struct fnfieldlist | |
1305 | { | |
be2daae6 TT |
1306 | const char *name = nullptr; |
1307 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1308 | }; |
1309 | ||
c906108c SS |
1310 | /* The routines that read and process dies for a C struct or C++ class |
1311 | pass lists of data member fields and lists of member function fields | |
1312 | in an instance of a field_info structure, as defined below. */ | |
1313 | struct field_info | |
c5aa993b | 1314 | { |
0963b4bd | 1315 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1316 | std::vector<struct nextfield> fields; |
1317 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1318 | |
7d0ccb61 | 1319 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1320 | int nfields = 0; |
c906108c | 1321 | |
85102364 | 1322 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1323 | int non_public_fields = 0; |
c906108c | 1324 | |
c5aa993b JM |
1325 | /* Member function fieldlist array, contains name of possibly overloaded |
1326 | member function, number of overloaded member functions and a pointer | |
1327 | to the head of the member function field chain. */ | |
be2daae6 | 1328 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1329 | |
1330 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1331 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1332 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1333 | |
1334 | /* Nested types defined by this class and the number of elements in this | |
1335 | list. */ | |
be2daae6 | 1336 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1337 | }; |
c906108c | 1338 | |
10b3939b DJ |
1339 | /* One item on the queue of compilation units to read in full symbols |
1340 | for. */ | |
1341 | struct dwarf2_queue_item | |
1342 | { | |
1343 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1344 | enum language pretend_language; |
10b3939b DJ |
1345 | struct dwarf2_queue_item *next; |
1346 | }; | |
1347 | ||
1348 | /* The current queue. */ | |
1349 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1350 | ||
ae038cb0 DJ |
1351 | /* Loaded secondary compilation units are kept in memory until they |
1352 | have not been referenced for the processing of this many | |
1353 | compilation units. Set this to zero to disable caching. Cache | |
1354 | sizes of up to at least twenty will improve startup time for | |
1355 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1356 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1357 | static void |
b4f54984 DE |
1358 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1359 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1360 | { |
3e43a32a | 1361 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1362 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1363 | value); |
1364 | } | |
4390d890 | 1365 | \f |
c906108c SS |
1366 | /* local function prototypes */ |
1367 | ||
918dd910 JK |
1368 | static void dwarf2_find_base_address (struct die_info *die, |
1369 | struct dwarf2_cu *cu); | |
1370 | ||
891813be | 1371 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1372 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1373 | ||
f1902523 JK |
1374 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1375 | const gdb_byte *info_ptr, | |
1376 | struct die_info *type_unit_die, | |
c0ab21c2 | 1377 | int has_children); |
f1902523 | 1378 | |
ed2dc618 SM |
1379 | static void dwarf2_build_psymtabs_hard |
1380 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1381 | |
72bf9492 DJ |
1382 | static void scan_partial_symbols (struct partial_die_info *, |
1383 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1384 | int, struct dwarf2_cu *); |
c906108c | 1385 | |
72bf9492 DJ |
1386 | static void add_partial_symbol (struct partial_die_info *, |
1387 | struct dwarf2_cu *); | |
63d06c5c | 1388 | |
72bf9492 DJ |
1389 | static void add_partial_namespace (struct partial_die_info *pdi, |
1390 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1391 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1392 | |
5d7cb8df | 1393 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1394 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1395 | struct dwarf2_cu *cu); |
1396 | ||
72bf9492 DJ |
1397 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1398 | struct dwarf2_cu *cu); | |
91c24f0a | 1399 | |
bc30ff58 JB |
1400 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1401 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1402 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1403 | |
d521ce57 | 1404 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1405 | |
dee91e82 | 1406 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1407 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1408 | |
fb816e8b TV |
1409 | /* A pair of partial_die_info and compilation unit. */ |
1410 | struct cu_partial_die_info | |
1411 | { | |
1412 | /* The compilation unit of the partial_die_info. */ | |
1413 | struct dwarf2_cu *cu; | |
1414 | /* A partial_die_info. */ | |
1415 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1416 | |
1417 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1418 | : cu (cu), | |
1419 | pdi (pdi) | |
405feb71 | 1420 | { /* Nothing. */ } |
122cf0f2 AB |
1421 | |
1422 | private: | |
1423 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1424 | }; |
1425 | ||
122cf0f2 AB |
1426 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1427 | struct dwarf2_cu *); | |
72bf9492 | 1428 | |
d521ce57 TT |
1429 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1430 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1431 | const gdb_byte *, bool *need_reprocess); |
1432 | ||
1433 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1434 | struct attribute *attr); | |
1435 | ||
1436 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1437 | |
d521ce57 | 1438 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1439 | unsigned int *); |
c906108c | 1440 | |
d521ce57 | 1441 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1442 | |
1443 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1444 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1445 | unsigned int *, unsigned int *); |
613e1657 | 1446 | |
d521ce57 TT |
1447 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1448 | const struct comp_unit_head *, | |
c764a876 DE |
1449 | unsigned int *); |
1450 | ||
d521ce57 | 1451 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1452 | |
ed2dc618 SM |
1453 | static sect_offset read_abbrev_offset |
1454 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1455 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1456 | |
d521ce57 | 1457 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1458 | |
d521ce57 | 1459 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1460 | |
ed2dc618 SM |
1461 | static const char *read_indirect_string |
1462 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1463 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1464 | |
ed2dc618 SM |
1465 | static const char *read_indirect_line_string |
1466 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1467 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1468 | |
ed2dc618 SM |
1469 | static const char *read_indirect_string_at_offset |
1470 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1471 | LONGEST str_offset); | |
927aa2e7 | 1472 | |
ed2dc618 SM |
1473 | static const char *read_indirect_string_from_dwz |
1474 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1475 | |
d521ce57 TT |
1476 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1477 | const gdb_byte *, | |
3019eac3 DE |
1478 | unsigned int *); |
1479 | ||
18a8505e AT |
1480 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1481 | ULONGEST str_index); | |
1482 | ||
1483 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1484 | ULONGEST str_index); | |
3019eac3 | 1485 | |
e142c38c | 1486 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1487 | |
e142c38c DJ |
1488 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1489 | struct dwarf2_cu *); | |
c906108c | 1490 | |
348e048f | 1491 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1492 | unsigned int); |
348e048f | 1493 | |
7d45c7c3 KB |
1494 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1495 | struct dwarf2_cu *cu); | |
1496 | ||
a084a2a6 AT |
1497 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1498 | ||
05cf31d1 JB |
1499 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1500 | struct dwarf2_cu *cu); | |
1501 | ||
e142c38c | 1502 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1503 | |
e142c38c | 1504 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1505 | struct dwarf2_cu **); |
63d06c5c | 1506 | |
9c541725 | 1507 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1508 | struct dwarf2_cu *cu); |
debd256d | 1509 | |
f3f5162e | 1510 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1511 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1512 | CORE_ADDR, int decode_mapping); |
c906108c | 1513 | |
804d2729 TT |
1514 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1515 | const char *); | |
c906108c | 1516 | |
a14ed312 | 1517 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1518 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1519 | |
ff39bb5e | 1520 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1521 | struct dwarf2_cu *); |
c906108c | 1522 | |
ff39bb5e | 1523 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1524 | struct type *type, |
1525 | const char *name, | |
1526 | struct obstack *obstack, | |
12df843f | 1527 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1528 | const gdb_byte **bytes, |
98bfdba5 | 1529 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1530 | |
e7c27a73 | 1531 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1532 | |
b4ba55a1 JB |
1533 | static int need_gnat_info (struct dwarf2_cu *); |
1534 | ||
3e43a32a MS |
1535 | static struct type *die_descriptive_type (struct die_info *, |
1536 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1537 | |
1538 | static void set_descriptive_type (struct type *, struct die_info *, | |
1539 | struct dwarf2_cu *); | |
1540 | ||
e7c27a73 DJ |
1541 | static struct type *die_containing_type (struct die_info *, |
1542 | struct dwarf2_cu *); | |
c906108c | 1543 | |
ff39bb5e | 1544 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1545 | struct dwarf2_cu *); |
c906108c | 1546 | |
f792889a | 1547 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1548 | |
673bfd45 DE |
1549 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1550 | ||
0d5cff50 | 1551 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1552 | |
6e70227d | 1553 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1554 | const char *suffix, int physname, |
1555 | struct dwarf2_cu *cu); | |
63d06c5c | 1556 | |
e7c27a73 | 1557 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1558 | |
348e048f DE |
1559 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1560 | ||
e7c27a73 | 1561 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1562 | |
e7c27a73 | 1563 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1564 | |
96408a79 SA |
1565 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1566 | ||
71a3c369 TT |
1567 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1568 | ||
ff013f42 | 1569 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1570 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1571 | |
3a2b436a | 1572 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1573 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1574 | enum pc_bounds_kind |
1575 | { | |
e385593e | 1576 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1577 | PC_BOUNDS_NOT_PRESENT, |
1578 | ||
e385593e JK |
1579 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1580 | were present but they do not form a valid range of PC addresses. */ | |
1581 | PC_BOUNDS_INVALID, | |
1582 | ||
3a2b436a JK |
1583 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1584 | PC_BOUNDS_RANGES, | |
1585 | ||
1586 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1587 | PC_BOUNDS_HIGH_LOW, | |
1588 | }; | |
1589 | ||
1590 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1591 | CORE_ADDR *, CORE_ADDR *, | |
1592 | struct dwarf2_cu *, | |
891813be | 1593 | dwarf2_psymtab *); |
c906108c | 1594 | |
fae299cd DC |
1595 | static void get_scope_pc_bounds (struct die_info *, |
1596 | CORE_ADDR *, CORE_ADDR *, | |
1597 | struct dwarf2_cu *); | |
1598 | ||
801e3a5b JB |
1599 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1600 | CORE_ADDR, struct dwarf2_cu *); | |
1601 | ||
a14ed312 | 1602 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1603 | struct dwarf2_cu *); |
c906108c | 1604 | |
a14ed312 | 1605 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1606 | struct type *, struct dwarf2_cu *); |
c906108c | 1607 | |
a14ed312 | 1608 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1609 | struct die_info *, struct type *, |
e7c27a73 | 1610 | struct dwarf2_cu *); |
c906108c | 1611 | |
a14ed312 | 1612 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1613 | struct type *, |
1614 | struct dwarf2_cu *); | |
c906108c | 1615 | |
134d01f1 | 1616 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1617 | |
e7c27a73 | 1618 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1619 | |
e7c27a73 | 1620 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1621 | |
5d7cb8df JK |
1622 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1623 | ||
804d2729 | 1624 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1625 | |
27aa8d6a SW |
1626 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1627 | ||
74921315 KS |
1628 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1629 | ||
f55ee35c JK |
1630 | static struct type *read_module_type (struct die_info *die, |
1631 | struct dwarf2_cu *cu); | |
1632 | ||
38d518c9 | 1633 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1634 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1635 | |
134d01f1 | 1636 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1637 | |
e7c27a73 | 1638 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1639 | |
6e70227d | 1640 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1641 | struct dwarf2_cu *); |
1642 | ||
bf6af496 | 1643 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1644 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1645 | struct die_info *); |
639d11d3 | 1646 | |
dee91e82 | 1647 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1648 | const gdb_byte *info_ptr, |
1649 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1650 | struct die_info *parent); |
1651 | ||
d521ce57 TT |
1652 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1653 | struct die_info **, const gdb_byte *, | |
1654 | int *, int); | |
3019eac3 | 1655 | |
d521ce57 TT |
1656 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1657 | struct die_info **, const gdb_byte *, | |
1658 | int *); | |
93311388 | 1659 | |
e7c27a73 | 1660 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1661 | |
15d034d0 TT |
1662 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1663 | struct obstack *); | |
71c25dea | 1664 | |
15d034d0 | 1665 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1666 | |
15d034d0 | 1667 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1668 | struct die_info *die, |
1669 | struct dwarf2_cu *cu); | |
1670 | ||
ca69b9e6 DE |
1671 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1672 | struct dwarf2_cu *cu); | |
1673 | ||
e142c38c | 1674 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1675 | struct dwarf2_cu **); |
9219021c | 1676 | |
f39c6ffd | 1677 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1678 | |
f39c6ffd | 1679 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1680 | |
a084a2a6 AT |
1681 | static const char *dwarf_unit_type_name (int unit_type); |
1682 | ||
f39c6ffd | 1683 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1684 | |
a121b7c1 | 1685 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1686 | |
f39c6ffd | 1687 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1688 | |
f9aca02d | 1689 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1690 | |
d97bc12b DE |
1691 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1692 | ||
1693 | static void dump_die_for_error (struct die_info *); | |
1694 | ||
1695 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1696 | struct die_info *); | |
c906108c | 1697 | |
d97bc12b | 1698 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1699 | |
51545339 | 1700 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1701 | struct dwarf2_cu *); |
c906108c | 1702 | |
ff39bb5e | 1703 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1704 | |
ff39bb5e | 1705 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1706 | |
348e048f | 1707 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1708 | const struct attribute *, |
348e048f DE |
1709 | struct dwarf2_cu **); |
1710 | ||
10b3939b | 1711 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1712 | const struct attribute *, |
f2f0e013 | 1713 | struct dwarf2_cu **); |
c906108c | 1714 | |
348e048f | 1715 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1716 | const struct attribute *, |
348e048f DE |
1717 | struct dwarf2_cu **); |
1718 | ||
ac9ec31b DE |
1719 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1720 | struct dwarf2_cu *); | |
1721 | ||
1722 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1723 | const struct attribute *, |
ac9ec31b DE |
1724 | struct dwarf2_cu *); |
1725 | ||
e5fe5e75 | 1726 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1727 | |
52dc124a | 1728 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1729 | |
63e43d3a PMR |
1730 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1731 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1732 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1733 | |
c906108c SS |
1734 | /* memory allocation interface */ |
1735 | ||
7b5a2f43 | 1736 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1737 | |
b60c80d6 | 1738 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1739 | |
43f3e411 | 1740 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1741 | |
8cf6f0b1 TT |
1742 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1743 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1744 | const struct attribute *attr); |
8cf6f0b1 | 1745 | |
ff39bb5e | 1746 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1747 | struct symbol *sym, |
f1e6e072 TT |
1748 | struct dwarf2_cu *cu, |
1749 | int is_block); | |
4c2df51b | 1750 | |
d521ce57 TT |
1751 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1752 | const gdb_byte *info_ptr, | |
1753 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1754 | |
72bf9492 DJ |
1755 | static hashval_t partial_die_hash (const void *item); |
1756 | ||
1757 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1758 | ||
ae038cb0 | 1759 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1760 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1761 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1762 | |
9816fde3 | 1763 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1764 | struct die_info *comp_unit_die, |
1765 | enum language pretend_language); | |
93311388 | 1766 | |
ed2dc618 | 1767 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1768 | |
dee91e82 | 1769 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1770 | |
f792889a DJ |
1771 | static struct type *set_die_type (struct die_info *, struct type *, |
1772 | struct dwarf2_cu *); | |
1c379e20 | 1773 | |
ed2dc618 | 1774 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1775 | |
ed2dc618 | 1776 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1777 | |
58f0c718 | 1778 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1779 | enum language); |
10b3939b | 1780 | |
95554aad TT |
1781 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1782 | enum language); | |
10b3939b | 1783 | |
f4dc4d17 DE |
1784 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1785 | enum language); | |
1786 | ||
10b3939b DJ |
1787 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1788 | struct dwarf2_per_cu_data *); | |
1789 | ||
ae038cb0 DJ |
1790 | static void dwarf2_mark (struct dwarf2_cu *); |
1791 | ||
1792 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1793 | ||
b64f50a1 | 1794 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1795 | struct dwarf2_per_cu_data *); |
673bfd45 | 1796 | |
f792889a | 1797 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1798 | |
95554aad TT |
1799 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1800 | enum language pretend_language); | |
1801 | ||
ed2dc618 | 1802 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1803 | |
9a49df9d AB |
1804 | static struct type *dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu); |
1805 | static struct type *dwarf2_per_cu_addr_sized_int_type | |
1806 | (struct dwarf2_per_cu_data *per_cu, bool unsigned_p); | |
11a8b164 AB |
1807 | static struct type *dwarf2_per_cu_int_type |
1808 | (struct dwarf2_per_cu_data *per_cu, int size_in_bytes, | |
1809 | bool unsigned_p); | |
9a49df9d | 1810 | |
b303c6f6 AB |
1811 | /* Class, the destructor of which frees all allocated queue entries. This |
1812 | will only have work to do if an error was thrown while processing the | |
1813 | dwarf. If no error was thrown then the queue entries should have all | |
1814 | been processed, and freed, as we went along. */ | |
1815 | ||
1816 | class dwarf2_queue_guard | |
1817 | { | |
1818 | public: | |
1819 | dwarf2_queue_guard () = default; | |
1820 | ||
1821 | /* Free any entries remaining on the queue. There should only be | |
1822 | entries left if we hit an error while processing the dwarf. */ | |
1823 | ~dwarf2_queue_guard () | |
1824 | { | |
1825 | struct dwarf2_queue_item *item, *last; | |
1826 | ||
1827 | item = dwarf2_queue; | |
1828 | while (item) | |
1829 | { | |
1830 | /* Anything still marked queued is likely to be in an | |
1831 | inconsistent state, so discard it. */ | |
1832 | if (item->per_cu->queued) | |
1833 | { | |
1834 | if (item->per_cu->cu != NULL) | |
1835 | free_one_cached_comp_unit (item->per_cu); | |
1836 | item->per_cu->queued = 0; | |
1837 | } | |
1838 | ||
1839 | last = item; | |
1840 | item = item->next; | |
1841 | xfree (last); | |
1842 | } | |
1843 | ||
1844 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1845 | } | |
1846 | }; | |
1847 | ||
d721ba37 PA |
1848 | /* The return type of find_file_and_directory. Note, the enclosed |
1849 | string pointers are only valid while this object is valid. */ | |
1850 | ||
1851 | struct file_and_directory | |
1852 | { | |
1853 | /* The filename. This is never NULL. */ | |
1854 | const char *name; | |
1855 | ||
1856 | /* The compilation directory. NULL if not known. If we needed to | |
1857 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1858 | points directly to the DW_AT_comp_dir string attribute owned by | |
1859 | the obstack that owns the DIE. */ | |
1860 | const char *comp_dir; | |
1861 | ||
1862 | /* If we needed to build a new string for comp_dir, this is what | |
1863 | owns the storage. */ | |
1864 | std::string comp_dir_storage; | |
1865 | }; | |
1866 | ||
1867 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1868 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1869 | |
1870 | static char *file_full_name (int file, struct line_header *lh, | |
1871 | const char *comp_dir); | |
1872 | ||
43988095 JK |
1873 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1874 | enum class rcuh_kind { COMPILE, TYPE }; | |
1875 | ||
d521ce57 | 1876 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1877 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1878 | struct comp_unit_head *header, | |
36586728 | 1879 | struct dwarf2_section_info *section, |
d521ce57 | 1880 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1881 | rcuh_kind section_kind); |
36586728 | 1882 | |
673bfd45 | 1883 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1884 | |
3019eac3 DE |
1885 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1886 | ||
57d63ce2 | 1887 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1888 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1889 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1890 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1891 | |
ed2dc618 SM |
1892 | static struct dwp_file *get_dwp_file |
1893 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1894 | |
3019eac3 | 1895 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1896 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1897 | |
1898 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1899 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1900 | |
89e63ee4 DE |
1901 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1902 | ||
263db9a1 TT |
1903 | /* A unique pointer to a dwo_file. */ |
1904 | ||
51ac9db5 | 1905 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1906 | |
ed2dc618 | 1907 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1908 | |
1b80a9fa | 1909 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1910 | |
1911 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1912 | \f |
1913 | /* Various complaints about symbol reading that don't abort the process. */ | |
1914 | ||
1915 | static void | |
1916 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1917 | { | |
b98664d3 | 1918 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
1919 | } |
1920 | ||
1921 | static void | |
1922 | dwarf2_debug_line_missing_file_complaint (void) | |
1923 | { | |
b98664d3 | 1924 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1925 | } |
1926 | ||
1927 | static void | |
1928 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1929 | { | |
b98664d3 | 1930 | complaint (_(".debug_line section has line " |
4390d890 DE |
1931 | "program sequence without an end")); |
1932 | } | |
1933 | ||
1934 | static void | |
1935 | dwarf2_complex_location_expr_complaint (void) | |
1936 | { | |
b98664d3 | 1937 | complaint (_("location expression too complex")); |
4390d890 DE |
1938 | } |
1939 | ||
1940 | static void | |
1941 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1942 | int arg3) | |
1943 | { | |
b98664d3 | 1944 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1945 | arg1, arg2, arg3); |
1946 | } | |
1947 | ||
1948 | static void | |
1949 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1950 | { | |
b98664d3 | 1951 | complaint (_("debug info runs off end of %s section" |
4390d890 | 1952 | " [in module %s]"), |
96b79293 TT |
1953 | section->get_name (), |
1954 | section->get_file_name ()); | |
4390d890 | 1955 | } |
1b80a9fa | 1956 | |
4390d890 DE |
1957 | static void |
1958 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1959 | { | |
b98664d3 | 1960 | complaint (_("macro debug info contains a " |
4390d890 DE |
1961 | "malformed macro definition:\n`%s'"), |
1962 | arg1); | |
1963 | } | |
1964 | ||
1965 | static void | |
1966 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1967 | { | |
b98664d3 | 1968 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1969 | arg1, arg2); |
1970 | } | |
527f3840 JK |
1971 | |
1972 | /* Hash function for line_header_hash. */ | |
1973 | ||
1974 | static hashval_t | |
1975 | line_header_hash (const struct line_header *ofs) | |
1976 | { | |
9c541725 | 1977 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1978 | } |
1979 | ||
1980 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1981 | ||
1982 | static hashval_t | |
1983 | line_header_hash_voidp (const void *item) | |
1984 | { | |
9a3c8263 | 1985 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1986 | |
1987 | return line_header_hash (ofs); | |
1988 | } | |
1989 | ||
1990 | /* Equality function for line_header_hash. */ | |
1991 | ||
1992 | static int | |
1993 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1994 | { | |
9a3c8263 SM |
1995 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1996 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1997 | |
9c541725 | 1998 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1999 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2000 | } | |
2001 | ||
4390d890 | 2002 | \f |
9291a0cd | 2003 | |
330cdd98 PA |
2004 | /* See declaration. */ |
2005 | ||
2006 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
2007 | const dwarf2_debug_sections *names, |
2008 | bool can_copy_) | |
2009 | : objfile (objfile_), | |
2010 | can_copy (can_copy_) | |
330cdd98 PA |
2011 | { |
2012 | if (names == NULL) | |
2013 | names = &dwarf2_elf_names; | |
2014 | ||
2015 | bfd *obfd = objfile->obfd; | |
2016 | ||
2017 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2018 | locate_sections (obfd, sec, *names); | |
2019 | } | |
2020 | ||
2021 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
2022 | { | |
2023 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2024 | free_cached_comp_units (); | |
2025 | ||
2026 | if (quick_file_names_table) | |
2027 | htab_delete (quick_file_names_table); | |
2028 | ||
2029 | if (line_header_hash) | |
2030 | htab_delete (line_header_hash); | |
2031 | ||
b76e467d | 2032 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 2033 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 2034 | |
b2bdb8cf | 2035 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 2036 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 2037 | |
330cdd98 PA |
2038 | /* Everything else should be on the objfile obstack. */ |
2039 | } | |
2040 | ||
2041 | /* See declaration. */ | |
2042 | ||
2043 | void | |
2044 | dwarf2_per_objfile::free_cached_comp_units () | |
2045 | { | |
2046 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2047 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2048 | while (per_cu != NULL) | |
2049 | { | |
2050 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2051 | ||
fcd3b13d | 2052 | delete per_cu->cu; |
330cdd98 PA |
2053 | *last_chain = next_cu; |
2054 | per_cu = next_cu; | |
2055 | } | |
2056 | } | |
2057 | ||
11ed8cad TT |
2058 | /* A helper class that calls free_cached_comp_units on |
2059 | destruction. */ | |
2060 | ||
2061 | class free_cached_comp_units | |
2062 | { | |
2063 | public: | |
2064 | ||
2065 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2066 | : m_per_objfile (per_objfile) | |
2067 | { | |
2068 | } | |
2069 | ||
2070 | ~free_cached_comp_units () | |
2071 | { | |
2072 | m_per_objfile->free_cached_comp_units (); | |
2073 | } | |
2074 | ||
2075 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2076 | ||
2077 | private: | |
2078 | ||
2079 | dwarf2_per_objfile *m_per_objfile; | |
2080 | }; | |
2081 | ||
c906108c | 2082 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2083 | information and return true if we have enough to do something. |
2084 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
2085 | ELF names are used. CAN_COPY is true for formats where symbol |
2086 | interposition is possible and so symbol values must follow copy | |
2087 | relocation rules. */ | |
c906108c SS |
2088 | |
2089 | int | |
251d32d9 | 2090 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
2091 | const struct dwarf2_debug_sections *names, |
2092 | bool can_copy) | |
c906108c | 2093 | { |
97cbe998 SDJ |
2094 | if (objfile->flags & OBJF_READNEVER) |
2095 | return 0; | |
2096 | ||
ed2dc618 SM |
2097 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2098 | = get_dwarf2_per_objfile (objfile); | |
2099 | ||
2100 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 2101 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
2102 | names, |
2103 | can_copy); | |
5bfd760d | 2104 | |
73869dc2 | 2105 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2106 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2107 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2108 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2109 | } |
2110 | ||
251d32d9 TG |
2111 | /* When loading sections, we look either for uncompressed section or for |
2112 | compressed section names. */ | |
233a11ab CS |
2113 | |
2114 | static int | |
251d32d9 TG |
2115 | section_is_p (const char *section_name, |
2116 | const struct dwarf2_section_names *names) | |
233a11ab | 2117 | { |
251d32d9 TG |
2118 | if (names->normal != NULL |
2119 | && strcmp (section_name, names->normal) == 0) | |
2120 | return 1; | |
2121 | if (names->compressed != NULL | |
2122 | && strcmp (section_name, names->compressed) == 0) | |
2123 | return 1; | |
2124 | return 0; | |
233a11ab CS |
2125 | } |
2126 | ||
330cdd98 | 2127 | /* See declaration. */ |
c906108c | 2128 | |
330cdd98 PA |
2129 | void |
2130 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2131 | const dwarf2_debug_sections &names) | |
c906108c | 2132 | { |
fd361982 | 2133 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2134 | |
dc7650b8 JK |
2135 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2136 | { | |
2137 | } | |
950b7495 KS |
2138 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2139 | > bfd_get_file_size (abfd)) | |
2140 | { | |
2141 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2142 | warning (_("Discarding section %s which has a section size (%s" | |
2143 | ") larger than the file size [in module %s]"), | |
2144 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2145 | bfd_get_filename (abfd)); | |
2146 | } | |
330cdd98 | 2147 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2148 | { |
330cdd98 | 2149 | this->info.s.section = sectp; |
fd361982 | 2150 | this->info.size = bfd_section_size (sectp); |
c906108c | 2151 | } |
330cdd98 | 2152 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2153 | { |
330cdd98 | 2154 | this->abbrev.s.section = sectp; |
fd361982 | 2155 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2156 | } |
330cdd98 | 2157 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2158 | { |
330cdd98 | 2159 | this->line.s.section = sectp; |
fd361982 | 2160 | this->line.size = bfd_section_size (sectp); |
c906108c | 2161 | } |
330cdd98 | 2162 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2163 | { |
330cdd98 | 2164 | this->loc.s.section = sectp; |
fd361982 | 2165 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2166 | } |
330cdd98 | 2167 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2168 | { |
330cdd98 | 2169 | this->loclists.s.section = sectp; |
fd361982 | 2170 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2171 | } |
330cdd98 | 2172 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2173 | { |
330cdd98 | 2174 | this->macinfo.s.section = sectp; |
fd361982 | 2175 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2176 | } |
330cdd98 | 2177 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2178 | { |
330cdd98 | 2179 | this->macro.s.section = sectp; |
fd361982 | 2180 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2181 | } |
330cdd98 | 2182 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2183 | { |
330cdd98 | 2184 | this->str.s.section = sectp; |
fd361982 | 2185 | this->str.size = bfd_section_size (sectp); |
c906108c | 2186 | } |
18a8505e AT |
2187 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2188 | { | |
2189 | this->str_offsets.s.section = sectp; | |
2190 | this->str_offsets.size = bfd_section_size (sectp); | |
2191 | } | |
330cdd98 | 2192 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2193 | { |
330cdd98 | 2194 | this->line_str.s.section = sectp; |
fd361982 | 2195 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2196 | } |
330cdd98 | 2197 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2198 | { |
330cdd98 | 2199 | this->addr.s.section = sectp; |
fd361982 | 2200 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2201 | } |
330cdd98 | 2202 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2203 | { |
330cdd98 | 2204 | this->frame.s.section = sectp; |
fd361982 | 2205 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2206 | } |
330cdd98 | 2207 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2208 | { |
330cdd98 | 2209 | this->eh_frame.s.section = sectp; |
fd361982 | 2210 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2211 | } |
330cdd98 | 2212 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2213 | { |
330cdd98 | 2214 | this->ranges.s.section = sectp; |
fd361982 | 2215 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2216 | } |
330cdd98 | 2217 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2218 | { |
330cdd98 | 2219 | this->rnglists.s.section = sectp; |
fd361982 | 2220 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2221 | } |
330cdd98 | 2222 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2223 | { |
8b70b953 TT |
2224 | struct dwarf2_section_info type_section; |
2225 | ||
2226 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2227 | type_section.s.section = sectp; |
fd361982 | 2228 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2229 | |
fd5866f6 | 2230 | this->types.push_back (type_section); |
348e048f | 2231 | } |
330cdd98 | 2232 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2233 | { |
330cdd98 | 2234 | this->gdb_index.s.section = sectp; |
fd361982 | 2235 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2236 | } |
927aa2e7 JK |
2237 | else if (section_is_p (sectp->name, &names.debug_names)) |
2238 | { | |
2239 | this->debug_names.s.section = sectp; | |
fd361982 | 2240 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2241 | } |
2242 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2243 | { | |
2244 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2245 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2246 | } |
dce234bc | 2247 | |
fd361982 AM |
2248 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2249 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2250 | this->has_section_at_zero = true; |
c906108c SS |
2251 | } |
2252 | ||
9e0ac564 TT |
2253 | /* A helper function that returns the size of a section in a safe way. |
2254 | If you are positive that the section has been read before using the | |
2255 | size, then it is safe to refer to the dwarf2_section_info object's | |
2256 | "size" field directly. In other cases, you must call this | |
2257 | function, because for compressed sections the size field is not set | |
2258 | correctly until the section has been read. */ | |
2259 | ||
2260 | static bfd_size_type | |
2261 | dwarf2_section_size (struct objfile *objfile, | |
2262 | struct dwarf2_section_info *info) | |
2263 | { | |
2264 | if (!info->readin) | |
96b79293 | 2265 | info->read (objfile); |
9e0ac564 TT |
2266 | return info->size; |
2267 | } | |
2268 | ||
dce234bc | 2269 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2270 | SECTION_NAME. */ |
af34e669 | 2271 | |
dce234bc | 2272 | void |
3017a003 TG |
2273 | dwarf2_get_section_info (struct objfile *objfile, |
2274 | enum dwarf2_section_enum sect, | |
d521ce57 | 2275 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2276 | bfd_size_type *sizep) |
2277 | { | |
5bfd760d | 2278 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2279 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2280 | |
2281 | /* We may see an objfile without any DWARF, in which case we just | |
2282 | return nothing. */ | |
2283 | if (data == NULL) | |
2284 | { | |
2285 | *sectp = NULL; | |
2286 | *bufp = NULL; | |
2287 | *sizep = 0; | |
2288 | return; | |
2289 | } | |
3017a003 TG |
2290 | switch (sect) |
2291 | { | |
2292 | case DWARF2_DEBUG_FRAME: | |
2293 | info = &data->frame; | |
2294 | break; | |
2295 | case DWARF2_EH_FRAME: | |
2296 | info = &data->eh_frame; | |
2297 | break; | |
2298 | default: | |
2299 | gdb_assert_not_reached ("unexpected section"); | |
2300 | } | |
dce234bc | 2301 | |
96b79293 | 2302 | info->read (objfile); |
dce234bc | 2303 | |
96b79293 | 2304 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2305 | *bufp = info->buffer; |
2306 | *sizep = info->size; | |
2307 | } | |
2308 | ||
36586728 TT |
2309 | /* A helper function to find the sections for a .dwz file. */ |
2310 | ||
2311 | static void | |
2312 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2313 | { | |
9a3c8263 | 2314 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2315 | |
2316 | /* Note that we only support the standard ELF names, because .dwz | |
2317 | is ELF-only (at the time of writing). */ | |
2318 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2319 | { | |
049412e3 | 2320 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2321 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2322 | } |
2323 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2324 | { | |
049412e3 | 2325 | dwz_file->info.s.section = sectp; |
fd361982 | 2326 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2327 | } |
2328 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2329 | { | |
049412e3 | 2330 | dwz_file->str.s.section = sectp; |
fd361982 | 2331 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2332 | } |
2333 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2334 | { | |
049412e3 | 2335 | dwz_file->line.s.section = sectp; |
fd361982 | 2336 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2337 | } |
2338 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2339 | { | |
049412e3 | 2340 | dwz_file->macro.s.section = sectp; |
fd361982 | 2341 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2342 | } |
2ec9a5e0 TT |
2343 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2344 | { | |
049412e3 | 2345 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2346 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2347 | } |
927aa2e7 JK |
2348 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2349 | { | |
2350 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2351 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2352 | } |
36586728 TT |
2353 | } |
2354 | ||
c4973306 | 2355 | /* See dwarf2read.h. */ |
36586728 | 2356 | |
c4973306 | 2357 | struct dwz_file * |
ed2dc618 | 2358 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2359 | { |
36586728 | 2360 | const char *filename; |
acd13123 | 2361 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2362 | size_t buildid_len; |
2363 | bfd_byte *buildid; | |
36586728 TT |
2364 | |
2365 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2366 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2367 | |
4db1a1dc | 2368 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2369 | gdb::unique_xmalloc_ptr<char> data |
2370 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2371 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2372 | if (data == NULL) |
2373 | { | |
2374 | if (bfd_get_error () == bfd_error_no_error) | |
2375 | return NULL; | |
2376 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2377 | bfd_errmsg (bfd_get_error ())); | |
2378 | } | |
791afaa2 TT |
2379 | |
2380 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2381 | |
acd13123 TT |
2382 | buildid_len = (size_t) buildid_len_arg; |
2383 | ||
791afaa2 | 2384 | filename = data.get (); |
d721ba37 PA |
2385 | |
2386 | std::string abs_storage; | |
36586728 TT |
2387 | if (!IS_ABSOLUTE_PATH (filename)) |
2388 | { | |
14278e1f TT |
2389 | gdb::unique_xmalloc_ptr<char> abs |
2390 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2391 | |
14278e1f | 2392 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2393 | filename = abs_storage.c_str (); |
36586728 TT |
2394 | } |
2395 | ||
dc294be5 TT |
2396 | /* First try the file name given in the section. If that doesn't |
2397 | work, try to use the build-id instead. */ | |
192b62ce | 2398 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2399 | if (dwz_bfd != NULL) |
36586728 | 2400 | { |
192b62ce | 2401 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2402 | dwz_bfd.reset (nullptr); |
36586728 TT |
2403 | } |
2404 | ||
dc294be5 TT |
2405 | if (dwz_bfd == NULL) |
2406 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2407 | ||
2408 | if (dwz_bfd == NULL) | |
2409 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2410 | objfile_name (dwarf2_per_objfile->objfile)); | |
2411 | ||
7ff8cb8c TT |
2412 | std::unique_ptr<struct dwz_file> result |
2413 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2414 | |
7ff8cb8c TT |
2415 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2416 | result.get ()); | |
36586728 | 2417 | |
7ff8cb8c TT |
2418 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2419 | result->dwz_bfd.get ()); | |
2420 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2421 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2422 | } |
9291a0cd | 2423 | \f |
7b9f3c50 DE |
2424 | /* DWARF quick_symbols_functions support. */ |
2425 | ||
2426 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2427 | unique line tables, so we maintain a separate table of all .debug_line | |
2428 | derived entries to support the sharing. | |
2429 | All the quick functions need is the list of file names. We discard the | |
2430 | line_header when we're done and don't need to record it here. */ | |
2431 | struct quick_file_names | |
2432 | { | |
094b34ac DE |
2433 | /* The data used to construct the hash key. */ |
2434 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2435 | |
2436 | /* The number of entries in file_names, real_names. */ | |
2437 | unsigned int num_file_names; | |
2438 | ||
2439 | /* The file names from the line table, after being run through | |
2440 | file_full_name. */ | |
2441 | const char **file_names; | |
2442 | ||
2443 | /* The file names from the line table after being run through | |
2444 | gdb_realpath. These are computed lazily. */ | |
2445 | const char **real_names; | |
2446 | }; | |
2447 | ||
2448 | /* When using the index (and thus not using psymtabs), each CU has an | |
2449 | object of this type. This is used to hold information needed by | |
2450 | the various "quick" methods. */ | |
2451 | struct dwarf2_per_cu_quick_data | |
2452 | { | |
2453 | /* The file table. This can be NULL if there was no file table | |
2454 | or it's currently not read in. | |
2455 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2456 | struct quick_file_names *file_names; | |
2457 | ||
2458 | /* The corresponding symbol table. This is NULL if symbols for this | |
2459 | CU have not yet been read. */ | |
43f3e411 | 2460 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2461 | |
2462 | /* A temporary mark bit used when iterating over all CUs in | |
2463 | expand_symtabs_matching. */ | |
2464 | unsigned int mark : 1; | |
2465 | ||
2466 | /* True if we've tried to read the file table and found there isn't one. | |
2467 | There will be no point in trying to read it again next time. */ | |
2468 | unsigned int no_file_data : 1; | |
2469 | }; | |
2470 | ||
094b34ac DE |
2471 | /* Utility hash function for a stmt_list_hash. */ |
2472 | ||
2473 | static hashval_t | |
2474 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2475 | { | |
2476 | hashval_t v = 0; | |
2477 | ||
2478 | if (stmt_list_hash->dwo_unit != NULL) | |
2479 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2480 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2481 | return v; |
2482 | } | |
2483 | ||
2484 | /* Utility equality function for a stmt_list_hash. */ | |
2485 | ||
2486 | static int | |
2487 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2488 | const struct stmt_list_hash *rhs) | |
2489 | { | |
2490 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2491 | return 0; | |
2492 | if (lhs->dwo_unit != NULL | |
2493 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2494 | return 0; | |
2495 | ||
9c541725 | 2496 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2497 | } |
2498 | ||
7b9f3c50 DE |
2499 | /* Hash function for a quick_file_names. */ |
2500 | ||
2501 | static hashval_t | |
2502 | hash_file_name_entry (const void *e) | |
2503 | { | |
9a3c8263 SM |
2504 | const struct quick_file_names *file_data |
2505 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2506 | |
094b34ac | 2507 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2508 | } |
2509 | ||
2510 | /* Equality function for a quick_file_names. */ | |
2511 | ||
2512 | static int | |
2513 | eq_file_name_entry (const void *a, const void *b) | |
2514 | { | |
9a3c8263 SM |
2515 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2516 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2517 | |
094b34ac | 2518 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2519 | } |
2520 | ||
2521 | /* Delete function for a quick_file_names. */ | |
2522 | ||
2523 | static void | |
2524 | delete_file_name_entry (void *e) | |
2525 | { | |
9a3c8263 | 2526 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2527 | int i; |
2528 | ||
2529 | for (i = 0; i < file_data->num_file_names; ++i) | |
2530 | { | |
2531 | xfree ((void*) file_data->file_names[i]); | |
2532 | if (file_data->real_names) | |
2533 | xfree ((void*) file_data->real_names[i]); | |
2534 | } | |
2535 | ||
2536 | /* The space for the struct itself lives on objfile_obstack, | |
2537 | so we don't free it here. */ | |
2538 | } | |
2539 | ||
2540 | /* Create a quick_file_names hash table. */ | |
2541 | ||
2542 | static htab_t | |
2543 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2544 | { | |
2545 | return htab_create_alloc (nr_initial_entries, | |
2546 | hash_file_name_entry, eq_file_name_entry, | |
2547 | delete_file_name_entry, xcalloc, xfree); | |
2548 | } | |
9291a0cd | 2549 | |
918dd910 JK |
2550 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2551 | have to be created afterwards. You should call age_cached_comp_units after | |
2552 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2553 | ||
2554 | static void | |
58f0c718 | 2555 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2556 | { |
3019eac3 | 2557 | if (per_cu->is_debug_types) |
e5fe5e75 | 2558 | load_full_type_unit (per_cu); |
918dd910 | 2559 | else |
58f0c718 | 2560 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2561 | |
cc12ce38 DE |
2562 | if (per_cu->cu == NULL) |
2563 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2564 | |
2565 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2566 | } |
2567 | ||
a0f42c21 | 2568 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2569 | |
9291a0cd | 2570 | static void |
58f0c718 | 2571 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2572 | { |
ed2dc618 | 2573 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2574 | |
f4dc4d17 DE |
2575 | /* Skip type_unit_groups, reading the type units they contain |
2576 | is handled elsewhere. */ | |
2577 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2578 | return; | |
2579 | ||
b303c6f6 AB |
2580 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2581 | the queue. After this point we're guaranteed to leave this function | |
2582 | with the dwarf queue empty. */ | |
2583 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2584 | |
95554aad | 2585 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2586 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2587 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2588 | { | |
2589 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2590 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2591 | |
2592 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2593 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2594 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2595 | if (!per_cu->is_debug_types | |
cc12ce38 | 2596 | && per_cu->cu != NULL |
89e63ee4 DE |
2597 | && per_cu->cu->dwo_unit != NULL |
2598 | && dwarf2_per_objfile->index_table != NULL | |
2599 | && dwarf2_per_objfile->index_table->version <= 7 | |
2600 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2601 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2602 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2603 | } |
9291a0cd | 2604 | |
ed2dc618 | 2605 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2606 | |
2607 | /* Age the cache, releasing compilation units that have not | |
2608 | been used recently. */ | |
ed2dc618 | 2609 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2610 | } |
2611 | ||
2612 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2613 | the objfile from which this CU came. Returns the resulting symbol | |
2614 | table. */ | |
2fdf6df6 | 2615 | |
43f3e411 | 2616 | static struct compunit_symtab * |
58f0c718 | 2617 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2618 | { |
ed2dc618 SM |
2619 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2620 | ||
95554aad | 2621 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2622 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2623 | { |
11ed8cad | 2624 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2625 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2626 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2627 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2628 | } |
f194fefb | 2629 | |
43f3e411 | 2630 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2631 | } |
2632 | ||
ff4c9fec | 2633 | /* See declaration. */ |
f4dc4d17 | 2634 | |
ff4c9fec SM |
2635 | dwarf2_per_cu_data * |
2636 | dwarf2_per_objfile::get_cutu (int index) | |
2637 | { | |
b76e467d | 2638 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2639 | { |
b76e467d | 2640 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2641 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2642 | return &this->all_type_units[index]->per_cu; |
2643 | } | |
f4dc4d17 | 2644 | |
ff4c9fec SM |
2645 | return this->all_comp_units[index]; |
2646 | } | |
f4dc4d17 | 2647 | |
ff4c9fec | 2648 | /* See declaration. */ |
2fdf6df6 | 2649 | |
ff4c9fec SM |
2650 | dwarf2_per_cu_data * |
2651 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2652 | { |
b76e467d | 2653 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2654 | |
ff4c9fec | 2655 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2656 | } |
2657 | ||
ff4c9fec | 2658 | /* See declaration. */ |
f4dc4d17 | 2659 | |
ff4c9fec SM |
2660 | signatured_type * |
2661 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2662 | { |
b2bdb8cf | 2663 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2664 | |
ff4c9fec | 2665 | return this->all_type_units[index]; |
1fd400ff TT |
2666 | } |
2667 | ||
4b514bc8 JK |
2668 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2669 | objfile_obstack, and constructed with the specified field | |
2670 | values. */ | |
2671 | ||
2672 | static dwarf2_per_cu_data * | |
ed2dc618 | 2673 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2674 | struct dwarf2_section_info *section, |
2675 | int is_dwz, | |
2676 | sect_offset sect_off, ULONGEST length) | |
2677 | { | |
ed2dc618 | 2678 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2679 | dwarf2_per_cu_data *the_cu |
2680 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2681 | struct dwarf2_per_cu_data); | |
2682 | the_cu->sect_off = sect_off; | |
2683 | the_cu->length = length; | |
e3b94546 | 2684 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2685 | the_cu->section = section; |
2686 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2687 | struct dwarf2_per_cu_quick_data); | |
2688 | the_cu->is_dwz = is_dwz; | |
2689 | return the_cu; | |
2690 | } | |
2691 | ||
2ec9a5e0 TT |
2692 | /* A helper for create_cus_from_index that handles a given list of |
2693 | CUs. */ | |
2fdf6df6 | 2694 | |
74a0d9f6 | 2695 | static void |
12359b5e | 2696 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2697 | const gdb_byte *cu_list, offset_type n_elements, |
2698 | struct dwarf2_section_info *section, | |
b76e467d | 2699 | int is_dwz) |
9291a0cd | 2700 | { |
12359b5e | 2701 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2702 | { |
74a0d9f6 | 2703 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2704 | |
2705 | sect_offset sect_off | |
2706 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2707 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2708 | cu_list += 2 * 8; |
2709 | ||
b76e467d | 2710 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2711 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2712 | sect_off, length); | |
b76e467d | 2713 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2714 | } |
9291a0cd TT |
2715 | } |
2716 | ||
2ec9a5e0 | 2717 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2718 | the CU objects for this objfile. */ |
2ec9a5e0 | 2719 | |
74a0d9f6 | 2720 | static void |
12359b5e | 2721 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2722 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2723 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2724 | { | |
b76e467d SM |
2725 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
2726 | dwarf2_per_objfile->all_comp_units.reserve | |
2727 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2728 | |
12359b5e | 2729 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 2730 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
2731 | |
2732 | if (dwz_elements == 0) | |
74a0d9f6 | 2733 | return; |
2ec9a5e0 | 2734 | |
12359b5e SM |
2735 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
2736 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 2737 | &dwz->info, 1); |
2ec9a5e0 TT |
2738 | } |
2739 | ||
1fd400ff | 2740 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2741 | |
74a0d9f6 | 2742 | static void |
12359b5e SM |
2743 | create_signatured_type_table_from_index |
2744 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2745 | struct dwarf2_section_info *section, | |
2746 | const gdb_byte *bytes, | |
2747 | offset_type elements) | |
1fd400ff | 2748 | { |
12359b5e | 2749 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 2750 | |
b2bdb8cf SM |
2751 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2752 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 2753 | |
12359b5e | 2754 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 2755 | |
12359b5e | 2756 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2757 | { |
52dc124a | 2758 | struct signatured_type *sig_type; |
9c541725 | 2759 | ULONGEST signature; |
1fd400ff | 2760 | void **slot; |
9c541725 | 2761 | cu_offset type_offset_in_tu; |
1fd400ff | 2762 | |
74a0d9f6 | 2763 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2764 | sect_offset sect_off |
2765 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2766 | type_offset_in_tu | |
2767 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2768 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2769 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2770 | bytes += 3 * 8; | |
2771 | ||
52dc124a | 2772 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2773 | struct signatured_type); |
52dc124a | 2774 | sig_type->signature = signature; |
9c541725 | 2775 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2776 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2777 | sig_type->per_cu.section = section; |
9c541725 | 2778 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2779 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2780 | sig_type->per_cu.v.quick |
1fd400ff TT |
2781 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2782 | struct dwarf2_per_cu_quick_data); | |
2783 | ||
52dc124a DE |
2784 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2785 | *slot = sig_type; | |
1fd400ff | 2786 | |
b2bdb8cf | 2787 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
2788 | } |
2789 | ||
673bfd45 | 2790 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2791 | } |
2792 | ||
927aa2e7 JK |
2793 | /* Create the signatured type hash table from .debug_names. */ |
2794 | ||
2795 | static void | |
2796 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2797 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2798 | const mapped_debug_names &map, |
2799 | struct dwarf2_section_info *section, | |
2800 | struct dwarf2_section_info *abbrev_section) | |
2801 | { | |
ed2dc618 SM |
2802 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2803 | ||
96b79293 TT |
2804 | section->read (objfile); |
2805 | abbrev_section->read (objfile); | |
927aa2e7 | 2806 | |
b2bdb8cf SM |
2807 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2808 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
2809 | |
2810 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
2811 | ||
2812 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2813 | { | |
2814 | struct signatured_type *sig_type; | |
927aa2e7 | 2815 | void **slot; |
927aa2e7 JK |
2816 | |
2817 | sect_offset sect_off | |
2818 | = (sect_offset) (extract_unsigned_integer | |
2819 | (map.tu_table_reordered + i * map.offset_size, | |
2820 | map.offset_size, | |
2821 | map.dwarf5_byte_order)); | |
2822 | ||
2823 | comp_unit_head cu_header; | |
ed2dc618 SM |
2824 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2825 | abbrev_section, | |
927aa2e7 JK |
2826 | section->buffer + to_underlying (sect_off), |
2827 | rcuh_kind::TYPE); | |
2828 | ||
2829 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2830 | struct signatured_type); | |
2831 | sig_type->signature = cu_header.signature; | |
2832 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2833 | sig_type->per_cu.is_debug_types = 1; | |
2834 | sig_type->per_cu.section = section; | |
2835 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2836 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
2837 | sig_type->per_cu.v.quick |
2838 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2839 | struct dwarf2_per_cu_quick_data); | |
2840 | ||
2841 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
2842 | *slot = sig_type; | |
2843 | ||
b2bdb8cf | 2844 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2845 | } |
2846 | ||
2847 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
2848 | } | |
2849 | ||
9291a0cd TT |
2850 | /* Read the address map data from the mapped index, and use it to |
2851 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2852 | |
9291a0cd | 2853 | static void |
ed2dc618 SM |
2854 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2855 | struct mapped_index *index) | |
9291a0cd | 2856 | { |
ed2dc618 | 2857 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 2858 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 2859 | const gdb_byte *iter, *end; |
9291a0cd | 2860 | struct addrmap *mutable_map; |
9291a0cd TT |
2861 | CORE_ADDR baseaddr; |
2862 | ||
8268c778 PA |
2863 | auto_obstack temp_obstack; |
2864 | ||
9291a0cd TT |
2865 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2866 | ||
f00a2de2 PA |
2867 | iter = index->address_table.data (); |
2868 | end = iter + index->address_table.size (); | |
9291a0cd | 2869 | |
b3b3bada | 2870 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2871 | |
2872 | while (iter < end) | |
2873 | { | |
2874 | ULONGEST hi, lo, cu_index; | |
2875 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2876 | iter += 8; | |
2877 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2878 | iter += 8; | |
2879 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2880 | iter += 4; | |
f652bce2 | 2881 | |
24a55014 | 2882 | if (lo > hi) |
f652bce2 | 2883 | { |
b98664d3 | 2884 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2885 | hex_string (lo), hex_string (hi)); |
24a55014 | 2886 | continue; |
f652bce2 | 2887 | } |
24a55014 | 2888 | |
b76e467d | 2889 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 2890 | { |
b98664d3 | 2891 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2892 | (unsigned) cu_index); |
24a55014 | 2893 | continue; |
f652bce2 | 2894 | } |
24a55014 | 2895 | |
79748972 TT |
2896 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2897 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2898 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 2899 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
2900 | } |
2901 | ||
d320c2b5 | 2902 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2903 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2904 | } |
2905 | ||
927aa2e7 JK |
2906 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2907 | populate the objfile's psymtabs_addrmap. */ | |
2908 | ||
2909 | static void | |
ed2dc618 | 2910 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2911 | struct dwarf2_section_info *section) |
2912 | { | |
ed2dc618 | 2913 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
2914 | bfd *abfd = objfile->obfd; |
2915 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 2916 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2917 | |
2918 | auto_obstack temp_obstack; | |
2919 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2920 | ||
2921 | std::unordered_map<sect_offset, | |
2922 | dwarf2_per_cu_data *, | |
2923 | gdb::hash_enum<sect_offset>> | |
2924 | debug_info_offset_to_per_cu; | |
b76e467d | 2925 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 2926 | { |
927aa2e7 JK |
2927 | const auto insertpair |
2928 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2929 | if (!insertpair.second) | |
2930 | { | |
2931 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2932 | "debug_info_offset %s, ignoring .debug_aranges."), |
2933 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2934 | return; |
2935 | } | |
2936 | } | |
2937 | ||
96b79293 | 2938 | section->read (objfile); |
927aa2e7 JK |
2939 | |
2940 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2941 | ||
2942 | const gdb_byte *addr = section->buffer; | |
2943 | ||
2944 | while (addr < section->buffer + section->size) | |
2945 | { | |
2946 | const gdb_byte *const entry_addr = addr; | |
2947 | unsigned int bytes_read; | |
2948 | ||
2949 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2950 | &bytes_read); | |
2951 | addr += bytes_read; | |
2952 | ||
2953 | const gdb_byte *const entry_end = addr + entry_length; | |
2954 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2955 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2956 | if (addr + entry_length > section->buffer + section->size) | |
2957 | { | |
47e3f474 | 2958 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2959 | "length %s exceeds section length %s, " |
2960 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2961 | objfile_name (objfile), |
2962 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2963 | plongest (bytes_read + entry_length), |
2964 | pulongest (section->size)); | |
2965 | return; | |
2966 | } | |
2967 | ||
2968 | /* The version number. */ | |
2969 | const uint16_t version = read_2_bytes (abfd, addr); | |
2970 | addr += 2; | |
2971 | if (version != 2) | |
2972 | { | |
47e3f474 | 2973 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2974 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2975 | objfile_name (objfile), |
2976 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2977 | return; |
2978 | } | |
2979 | ||
2980 | const uint64_t debug_info_offset | |
2981 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2982 | addr += offset_size; | |
2983 | const auto per_cu_it | |
2984 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2985 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2986 | { | |
47e3f474 | 2987 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2988 | "debug_info_offset %s does not exists, " |
2989 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2990 | objfile_name (objfile), |
2991 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2992 | pulongest (debug_info_offset)); |
2993 | return; | |
2994 | } | |
2995 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2996 | ||
2997 | const uint8_t address_size = *addr++; | |
2998 | if (address_size < 1 || address_size > 8) | |
2999 | { | |
47e3f474 | 3000 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3001 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
3002 | objfile_name (objfile), |
3003 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
3004 | return; |
3005 | } | |
3006 | ||
3007 | const uint8_t segment_selector_size = *addr++; | |
3008 | if (segment_selector_size != 0) | |
3009 | { | |
47e3f474 | 3010 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3011 | "segment_selector_size %u is not supported, " |
3012 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3013 | objfile_name (objfile), |
3014 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3015 | segment_selector_size); |
3016 | return; | |
3017 | } | |
3018 | ||
3019 | /* Must pad to an alignment boundary that is twice the address | |
3020 | size. It is undocumented by the DWARF standard but GCC does | |
3021 | use it. */ | |
3022 | for (size_t padding = ((-(addr - section->buffer)) | |
3023 | & (2 * address_size - 1)); | |
3024 | padding > 0; padding--) | |
3025 | if (*addr++ != 0) | |
3026 | { | |
47e3f474 | 3027 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3028 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
3029 | objfile_name (objfile), |
3030 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3031 | return; |
3032 | } | |
3033 | ||
3034 | for (;;) | |
3035 | { | |
3036 | if (addr + 2 * address_size > entry_end) | |
3037 | { | |
47e3f474 | 3038 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3039 | "address list is not properly terminated, " |
3040 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3041 | objfile_name (objfile), |
3042 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3043 | return; |
3044 | } | |
3045 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3046 | dwarf5_byte_order); | |
3047 | addr += address_size; | |
3048 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3049 | dwarf5_byte_order); | |
3050 | addr += address_size; | |
3051 | if (start == 0 && length == 0) | |
3052 | break; | |
3053 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3054 | { | |
3055 | /* Symbol was eliminated due to a COMDAT group. */ | |
3056 | continue; | |
3057 | } | |
3058 | ULONGEST end = start + length; | |
79748972 TT |
3059 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3060 | - baseaddr); | |
3061 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3062 | - baseaddr); | |
927aa2e7 JK |
3063 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3064 | } | |
3065 | } | |
3066 | ||
d320c2b5 | 3067 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3068 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3069 | } |
3070 | ||
9291a0cd TT |
3071 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3072 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3073 | constant pool and return true. If NAME cannot be found, return |
3074 | false. */ | |
2fdf6df6 | 3075 | |
109483d9 | 3076 | static bool |
9291a0cd TT |
3077 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3078 | offset_type **vec_out) | |
3079 | { | |
0cf03b49 | 3080 | offset_type hash; |
9291a0cd | 3081 | offset_type slot, step; |
559a7a62 | 3082 | int (*cmp) (const char *, const char *); |
9291a0cd | 3083 | |
791afaa2 | 3084 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3085 | if (current_language->la_language == language_cplus |
45280282 IB |
3086 | || current_language->la_language == language_fortran |
3087 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3088 | { |
3089 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3090 | not contain any. */ | |
a8719064 | 3091 | |
72998fb3 | 3092 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3093 | { |
109483d9 | 3094 | without_params = cp_remove_params (name); |
0cf03b49 | 3095 | |
72998fb3 | 3096 | if (without_params != NULL) |
791afaa2 | 3097 | name = without_params.get (); |
0cf03b49 JK |
3098 | } |
3099 | } | |
3100 | ||
559a7a62 | 3101 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3102 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3103 | simulate our NAME being searched is also lowercased. */ |
3104 | hash = mapped_index_string_hash ((index->version == 4 | |
3105 | && case_sensitivity == case_sensitive_off | |
3106 | ? 5 : index->version), | |
3107 | name); | |
3108 | ||
f00a2de2 PA |
3109 | slot = hash & (index->symbol_table.size () - 1); |
3110 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3111 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3112 | |
3113 | for (;;) | |
3114 | { | |
9291a0cd | 3115 | const char *str; |
f00a2de2 PA |
3116 | |
3117 | const auto &bucket = index->symbol_table[slot]; | |
3118 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3119 | return false; |
9291a0cd | 3120 | |
f00a2de2 | 3121 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3122 | if (!cmp (name, str)) |
9291a0cd TT |
3123 | { |
3124 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3125 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3126 | return true; |
9291a0cd TT |
3127 | } |
3128 | ||
f00a2de2 | 3129 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3130 | } |
3131 | } | |
3132 | ||
4485a1c1 SM |
3133 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3134 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3135 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3136 | ok to use deprecated sections. |
3137 | ||
3138 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3139 | out parameters that are filled in with information about the CU and | |
3140 | TU lists in the section. | |
3141 | ||
4485a1c1 | 3142 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3143 | |
d33bc52e | 3144 | static bool |
4485a1c1 SM |
3145 | read_gdb_index_from_buffer (struct objfile *objfile, |
3146 | const char *filename, | |
3147 | bool deprecated_ok, | |
3148 | gdb::array_view<const gdb_byte> buffer, | |
3149 | struct mapped_index *map, | |
3150 | const gdb_byte **cu_list, | |
3151 | offset_type *cu_list_elements, | |
3152 | const gdb_byte **types_list, | |
3153 | offset_type *types_list_elements) | |
3154 | { | |
3155 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3156 | |
9291a0cd | 3157 | /* Version check. */ |
4485a1c1 | 3158 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3159 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3160 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3161 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3162 | indices. */ |
831adc1f | 3163 | if (version < 4) |
481860b3 GB |
3164 | { |
3165 | static int warning_printed = 0; | |
3166 | if (!warning_printed) | |
3167 | { | |
3168 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3169 | filename); |
481860b3 GB |
3170 | warning_printed = 1; |
3171 | } | |
3172 | return 0; | |
3173 | } | |
3174 | /* Index version 4 uses a different hash function than index version | |
3175 | 5 and later. | |
3176 | ||
3177 | Versions earlier than 6 did not emit psymbols for inlined | |
3178 | functions. Using these files will cause GDB not to be able to | |
3179 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3180 | indices unless the user has done |
3181 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3182 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3183 | { |
3184 | static int warning_printed = 0; | |
3185 | if (!warning_printed) | |
3186 | { | |
e615022a DE |
3187 | warning (_("\ |
3188 | Skipping deprecated .gdb_index section in %s.\n\ | |
3189 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3190 | to use the section anyway."), | |
2ec9a5e0 | 3191 | filename); |
481860b3 GB |
3192 | warning_printed = 1; |
3193 | } | |
3194 | return 0; | |
3195 | } | |
796a7ff8 | 3196 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3197 | of the TU (for symbols coming from TUs), |
3198 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3199 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3200 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3201 | These are just performance bugs, and we can't distinguish gdb-generated | |
3202 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3203 | |
481860b3 | 3204 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3205 | longer backward compatible. */ |
796a7ff8 | 3206 | if (version > 8) |
594e8718 | 3207 | return 0; |
9291a0cd | 3208 | |
559a7a62 | 3209 | map->version = version; |
9291a0cd | 3210 | |
4485a1c1 | 3211 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3212 | |
4485a1c1 | 3213 | int i = 0; |
2ec9a5e0 TT |
3214 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3215 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3216 | / 8); | |
1fd400ff TT |
3217 | ++i; |
3218 | ||
2ec9a5e0 TT |
3219 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3220 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3221 | - MAYBE_SWAP (metadata[i])) | |
3222 | / 8); | |
987d643c | 3223 | ++i; |
1fd400ff | 3224 | |
f00a2de2 PA |
3225 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3226 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3227 | map->address_table | |
3228 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3229 | ++i; |
3230 | ||
f00a2de2 PA |
3231 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3232 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3233 | map->symbol_table | |
3234 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3235 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3236 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3237 | |
f00a2de2 | 3238 | ++i; |
f9d83a0b | 3239 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3240 | |
2ec9a5e0 TT |
3241 | return 1; |
3242 | } | |
3243 | ||
4485a1c1 SM |
3244 | /* Callback types for dwarf2_read_gdb_index. */ |
3245 | ||
3246 | typedef gdb::function_view | |
3247 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3248 | get_gdb_index_contents_ftype; | |
3249 | typedef gdb::function_view | |
3250 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3251 | get_gdb_index_contents_dwz_ftype; | |
3252 | ||
927aa2e7 | 3253 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3254 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3255 | ||
3256 | static int | |
4485a1c1 SM |
3257 | dwarf2_read_gdb_index |
3258 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3259 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3260 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3261 | { |
2ec9a5e0 TT |
3262 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3263 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3264 | struct dwz_file *dwz; |
12359b5e | 3265 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3266 | |
4485a1c1 SM |
3267 | gdb::array_view<const gdb_byte> main_index_contents |
3268 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3269 | ||
3270 | if (main_index_contents.empty ()) | |
3271 | return 0; | |
3272 | ||
3063847f | 3273 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3274 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3275 | use_deprecated_index_sections, | |
3276 | main_index_contents, map.get (), &cu_list, | |
3277 | &cu_list_elements, &types_list, | |
3278 | &types_list_elements)) | |
2ec9a5e0 TT |
3279 | return 0; |
3280 | ||
0fefef59 | 3281 | /* Don't use the index if it's empty. */ |
3063847f | 3282 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3283 | return 0; |
3284 | ||
2ec9a5e0 TT |
3285 | /* If there is a .dwz file, read it so we can get its CU list as |
3286 | well. */ | |
ed2dc618 | 3287 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3288 | if (dwz != NULL) |
2ec9a5e0 | 3289 | { |
2ec9a5e0 TT |
3290 | struct mapped_index dwz_map; |
3291 | const gdb_byte *dwz_types_ignore; | |
3292 | offset_type dwz_types_elements_ignore; | |
3293 | ||
4485a1c1 SM |
3294 | gdb::array_view<const gdb_byte> dwz_index_content |
3295 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3296 | ||
3297 | if (dwz_index_content.empty ()) | |
3298 | return 0; | |
3299 | ||
3300 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3301 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3302 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3303 | &dwz_list, &dwz_list_elements, |
3304 | &dwz_types_ignore, | |
3305 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3306 | { |
3307 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3308 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3309 | return 0; |
3310 | } | |
3311 | } | |
3312 | ||
12359b5e SM |
3313 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3314 | dwz_list, dwz_list_elements); | |
1fd400ff | 3315 | |
8b70b953 TT |
3316 | if (types_list_elements) |
3317 | { | |
8b70b953 TT |
3318 | /* We can only handle a single .debug_types when we have an |
3319 | index. */ | |
fd5866f6 | 3320 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3321 | return 0; |
3322 | ||
fd5866f6 | 3323 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3324 | |
12359b5e SM |
3325 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3326 | types_list, types_list_elements); | |
8b70b953 | 3327 | } |
9291a0cd | 3328 | |
3063847f | 3329 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3330 | |
3063847f | 3331 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3332 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3333 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3334 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3335 | |
3336 | return 1; | |
3337 | } | |
3338 | ||
dee91e82 | 3339 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3340 | |
dee91e82 DE |
3341 | static void |
3342 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3343 | const gdb_byte *info_ptr, |
dee91e82 | 3344 | struct die_info *comp_unit_die, |
c0ab21c2 | 3345 | int has_children) |
9291a0cd | 3346 | { |
dee91e82 | 3347 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3348 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3349 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3350 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3351 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3352 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3353 | struct attribute *attr; |
7b9f3c50 DE |
3354 | void **slot; |
3355 | struct quick_file_names *qfn; | |
9291a0cd | 3356 | |
0186c6a7 DE |
3357 | gdb_assert (! this_cu->is_debug_types); |
3358 | ||
07261596 TT |
3359 | /* Our callers never want to match partial units -- instead they |
3360 | will match the enclosing full CU. */ | |
3361 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3362 | { | |
3363 | this_cu->v.quick->no_file_data = 1; | |
3364 | return; | |
3365 | } | |
3366 | ||
0186c6a7 | 3367 | lh_cu = this_cu; |
7b9f3c50 | 3368 | slot = NULL; |
dee91e82 | 3369 | |
fff8551c | 3370 | line_header_up lh; |
9c541725 | 3371 | sect_offset line_offset {}; |
fff8551c | 3372 | |
dee91e82 | 3373 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3374 | if (attr != nullptr) |
9291a0cd | 3375 | { |
7b9f3c50 DE |
3376 | struct quick_file_names find_entry; |
3377 | ||
9c541725 | 3378 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3379 | |
3380 | /* We may have already read in this line header (TU line header sharing). | |
3381 | If we have we're done. */ | |
094b34ac | 3382 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3383 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3384 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3385 | &find_entry, INSERT); | |
3386 | if (*slot != NULL) | |
3387 | { | |
9a3c8263 | 3388 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3389 | return; |
7b9f3c50 DE |
3390 | } |
3391 | ||
3019eac3 | 3392 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3393 | } |
3394 | if (lh == NULL) | |
3395 | { | |
094b34ac | 3396 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3397 | return; |
9291a0cd TT |
3398 | } |
3399 | ||
8d749320 | 3400 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3401 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3402 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3403 | gdb_assert (slot != NULL); |
3404 | *slot = qfn; | |
9291a0cd | 3405 | |
d721ba37 | 3406 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3407 | |
aa391654 TT |
3408 | int offset = 0; |
3409 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3410 | ++offset; | |
3411 | ||
7ba99d21 | 3412 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3413 | qfn->file_names = |
aa391654 TT |
3414 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3415 | if (offset != 0) | |
3416 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3417 | for (int i = 0; i < lh->file_names_size (); ++i) |
aa391654 | 3418 | qfn->file_names[i + offset] = file_full_name (i + 1, lh.get (), fnd.comp_dir); |
7b9f3c50 | 3419 | qfn->real_names = NULL; |
9291a0cd | 3420 | |
094b34ac | 3421 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3422 | } |
3423 | ||
3424 | /* A helper for the "quick" functions which attempts to read the line | |
3425 | table for THIS_CU. */ | |
3426 | ||
3427 | static struct quick_file_names * | |
e4a48d9d | 3428 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3429 | { |
0186c6a7 DE |
3430 | /* This should never be called for TUs. */ |
3431 | gdb_assert (! this_cu->is_debug_types); | |
3432 | /* Nor type unit groups. */ | |
3433 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3434 | |
dee91e82 DE |
3435 | if (this_cu->v.quick->file_names != NULL) |
3436 | return this_cu->v.quick->file_names; | |
3437 | /* If we know there is no line data, no point in looking again. */ | |
3438 | if (this_cu->v.quick->no_file_data) | |
3439 | return NULL; | |
3440 | ||
c0ab21c2 TT |
3441 | cutu_reader reader (this_cu); |
3442 | if (!reader.dummy_p) | |
3443 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3444 | reader.has_children); | |
dee91e82 DE |
3445 | |
3446 | if (this_cu->v.quick->no_file_data) | |
3447 | return NULL; | |
3448 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3449 | } |
3450 | ||
3451 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3452 | real path for a given file name from the line table. */ |
2fdf6df6 | 3453 | |
9291a0cd | 3454 | static const char * |
7b9f3c50 DE |
3455 | dw2_get_real_path (struct objfile *objfile, |
3456 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3457 | { |
7b9f3c50 DE |
3458 | if (qfn->real_names == NULL) |
3459 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3460 | qfn->num_file_names, const char *); |
9291a0cd | 3461 | |
7b9f3c50 | 3462 | if (qfn->real_names[index] == NULL) |
14278e1f | 3463 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3464 | |
7b9f3c50 | 3465 | return qfn->real_names[index]; |
9291a0cd TT |
3466 | } |
3467 | ||
3468 | static struct symtab * | |
3469 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3470 | { | |
ed2dc618 SM |
3471 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3472 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3473 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3474 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3475 | |
43f3e411 DE |
3476 | if (cust == NULL) |
3477 | return NULL; | |
ed2dc618 | 3478 | |
43f3e411 | 3479 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3480 | } |
3481 | ||
7b9f3c50 DE |
3482 | /* Traversal function for dw2_forget_cached_source_info. */ |
3483 | ||
3484 | static int | |
3485 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3486 | { |
7b9f3c50 | 3487 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3488 | |
7b9f3c50 | 3489 | if (file_data->real_names) |
9291a0cd | 3490 | { |
7b9f3c50 | 3491 | int i; |
9291a0cd | 3492 | |
7b9f3c50 | 3493 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3494 | { |
7b9f3c50 DE |
3495 | xfree ((void*) file_data->real_names[i]); |
3496 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3497 | } |
3498 | } | |
7b9f3c50 DE |
3499 | |
3500 | return 1; | |
3501 | } | |
3502 | ||
3503 | static void | |
3504 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3505 | { | |
ed2dc618 SM |
3506 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3507 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3508 | |
3509 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3510 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3511 | } |
3512 | ||
f8eba3c6 TT |
3513 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3514 | the symtabs and calls the iterator. */ | |
3515 | ||
3516 | static int | |
3517 | dw2_map_expand_apply (struct objfile *objfile, | |
3518 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3519 | const char *name, const char *real_path, |
14bc53a8 | 3520 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3521 | { |
43f3e411 | 3522 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3523 | |
3524 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3525 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3526 | return 0; |
3527 | ||
3528 | /* This may expand more than one symtab, and we want to iterate over | |
3529 | all of them. */ | |
58f0c718 | 3530 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3531 | |
14bc53a8 PA |
3532 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3533 | last_made, callback); | |
f8eba3c6 TT |
3534 | } |
3535 | ||
3536 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3537 | ||
14bc53a8 PA |
3538 | static bool |
3539 | dw2_map_symtabs_matching_filename | |
3540 | (struct objfile *objfile, const char *name, const char *real_path, | |
3541 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3542 | { |
c011a4f4 | 3543 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3544 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3545 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3546 | |
848e3e78 DE |
3547 | /* The rule is CUs specify all the files, including those used by |
3548 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3549 | |
b76e467d | 3550 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3551 | { |
3d7bb9d9 | 3552 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3553 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3554 | continue; |
3555 | ||
b76e467d | 3556 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3557 | if (file_data == NULL) |
9291a0cd TT |
3558 | continue; |
3559 | ||
b76e467d | 3560 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3561 | { |
7b9f3c50 | 3562 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3563 | const char *this_real_name; |
9291a0cd | 3564 | |
af529f8f | 3565 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3566 | { |
f5b95b50 | 3567 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3568 | callback)) |
3569 | return true; | |
288e77a7 | 3570 | continue; |
4aac40c8 | 3571 | } |
9291a0cd | 3572 | |
c011a4f4 DE |
3573 | /* Before we invoke realpath, which can get expensive when many |
3574 | files are involved, do a quick comparison of the basenames. */ | |
3575 | if (! basenames_may_differ | |
3576 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3577 | continue; | |
3578 | ||
da235a7c JK |
3579 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3580 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3581 | { |
da235a7c | 3582 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3583 | callback)) |
3584 | return true; | |
288e77a7 | 3585 | continue; |
da235a7c | 3586 | } |
9291a0cd | 3587 | |
da235a7c JK |
3588 | if (real_path != NULL) |
3589 | { | |
af529f8f JK |
3590 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3591 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3592 | if (this_real_name != NULL |
af529f8f | 3593 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3594 | { |
f5b95b50 | 3595 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3596 | callback)) |
3597 | return true; | |
288e77a7 | 3598 | continue; |
9291a0cd TT |
3599 | } |
3600 | } | |
3601 | } | |
3602 | } | |
3603 | ||
14bc53a8 | 3604 | return false; |
9291a0cd TT |
3605 | } |
3606 | ||
da51c347 DE |
3607 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3608 | ||
3609 | struct dw2_symtab_iterator | |
9291a0cd | 3610 | { |
ed2dc618 SM |
3611 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3612 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3613 | /* If set, only look for symbols that match that block. Valid values are |
3614 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3615 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3616 | /* The kind of symbol we're looking for. */ |
3617 | domain_enum domain; | |
3618 | /* The list of CUs from the index entry of the symbol, | |
3619 | or NULL if not found. */ | |
3620 | offset_type *vec; | |
3621 | /* The next element in VEC to look at. */ | |
3622 | int next; | |
3623 | /* The number of elements in VEC, or zero if there is no match. */ | |
3624 | int length; | |
8943b874 DE |
3625 | /* Have we seen a global version of the symbol? |
3626 | If so we can ignore all further global instances. | |
3627 | This is to work around gold/15646, inefficient gold-generated | |
3628 | indices. */ | |
3629 | int global_seen; | |
da51c347 | 3630 | }; |
9291a0cd | 3631 | |
2b79f376 | 3632 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3633 | |
9291a0cd | 3634 | static void |
da51c347 | 3635 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3636 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3637 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3638 | domain_enum domain, |
3639 | const char *name) | |
3640 | { | |
ed2dc618 | 3641 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3642 | iter->block_index = block_index; |
3643 | iter->domain = domain; | |
3644 | iter->next = 0; | |
8943b874 | 3645 | iter->global_seen = 0; |
da51c347 | 3646 | |
3063847f | 3647 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3648 | |
3649 | /* index is NULL if OBJF_READNOW. */ | |
3650 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3651 | iter->length = MAYBE_SWAP (*iter->vec); |
3652 | else | |
3653 | { | |
3654 | iter->vec = NULL; | |
3655 | iter->length = 0; | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | /* Return the next matching CU or NULL if there are no more. */ | |
3660 | ||
3661 | static struct dwarf2_per_cu_data * | |
3662 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3663 | { | |
ed2dc618 SM |
3664 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3665 | ||
da51c347 DE |
3666 | for ( ; iter->next < iter->length; ++iter->next) |
3667 | { | |
3668 | offset_type cu_index_and_attrs = | |
3669 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3670 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3671 | gdb_index_symbol_kind symbol_kind = |
3672 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3673 | /* Only check the symbol attributes if they're present. | |
3674 | Indices prior to version 7 don't record them, | |
3675 | and indices >= 7 may elide them for certain symbols | |
3676 | (gold does this). */ | |
3677 | int attrs_valid = | |
ed2dc618 | 3678 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3679 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3680 | ||
3190f0c6 | 3681 | /* Don't crash on bad data. */ |
b76e467d | 3682 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3683 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3684 | { |
b98664d3 | 3685 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3686 | " [in module %s]"), |
3687 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3688 | continue; |
3689 | } | |
3690 | ||
ff4c9fec | 3691 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3692 | |
da51c347 | 3693 | /* Skip if already read in. */ |
43f3e411 | 3694 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3695 | continue; |
3696 | ||
8943b874 DE |
3697 | /* Check static vs global. */ |
3698 | if (attrs_valid) | |
3699 | { | |
2b79f376 SM |
3700 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3701 | ||
3702 | if (iter->block_index.has_value ()) | |
3703 | { | |
3704 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3705 | ||
3706 | if (is_static != want_static) | |
3707 | continue; | |
3708 | } | |
3709 | ||
8943b874 DE |
3710 | /* Work around gold/15646. */ |
3711 | if (!is_static && iter->global_seen) | |
3712 | continue; | |
3713 | if (!is_static) | |
3714 | iter->global_seen = 1; | |
3715 | } | |
da51c347 DE |
3716 | |
3717 | /* Only check the symbol's kind if it has one. */ | |
3718 | if (attrs_valid) | |
3719 | { | |
3720 | switch (iter->domain) | |
3721 | { | |
3722 | case VAR_DOMAIN: | |
3723 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3724 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3725 | /* Some types are also in VAR_DOMAIN. */ | |
3726 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3727 | continue; | |
3728 | break; | |
3729 | case STRUCT_DOMAIN: | |
3730 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3731 | continue; | |
3732 | break; | |
3733 | case LABEL_DOMAIN: | |
3734 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3735 | continue; | |
3736 | break; | |
59c35742 AB |
3737 | case MODULE_DOMAIN: |
3738 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3739 | continue; | |
3740 | break; | |
da51c347 DE |
3741 | default: |
3742 | break; | |
3743 | } | |
3744 | } | |
3745 | ||
3746 | ++iter->next; | |
3747 | return per_cu; | |
3748 | } | |
3749 | ||
3750 | return NULL; | |
3751 | } | |
3752 | ||
43f3e411 | 3753 | static struct compunit_symtab * |
c7f839cb | 3754 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3755 | const char *name, domain_enum domain) |
9291a0cd | 3756 | { |
43f3e411 | 3757 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3758 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3759 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3760 | |
b5ec771e PA |
3761 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3762 | ||
ed2dc618 SM |
3763 | struct dw2_symtab_iterator iter; |
3764 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3765 | |
2b79f376 | 3766 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3767 | |
ed2dc618 SM |
3768 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3769 | { | |
3770 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 3771 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 3772 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3773 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3774 | |
ed2dc618 SM |
3775 | sym = block_find_symbol (block, name, domain, |
3776 | block_find_non_opaque_type_preferred, | |
3777 | &with_opaque); | |
b2e2f908 | 3778 | |
ed2dc618 SM |
3779 | /* Some caution must be observed with overloaded functions |
3780 | and methods, since the index will not contain any overload | |
3781 | information (but NAME might contain it). */ | |
da51c347 | 3782 | |
ed2dc618 SM |
3783 | if (sym != NULL |
3784 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3785 | return stab; | |
3786 | if (with_opaque != NULL | |
3787 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3788 | stab_best = stab; | |
da51c347 | 3789 | |
ed2dc618 | 3790 | /* Keep looking through other CUs. */ |
9291a0cd | 3791 | } |
9291a0cd | 3792 | |
da51c347 | 3793 | return stab_best; |
9291a0cd TT |
3794 | } |
3795 | ||
3796 | static void | |
3797 | dw2_print_stats (struct objfile *objfile) | |
3798 | { | |
ed2dc618 SM |
3799 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3800 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3801 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3802 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 3803 | int count = 0; |
9291a0cd | 3804 | |
ed2dc618 | 3805 | for (int i = 0; i < total; ++i) |
9291a0cd | 3806 | { |
ff4c9fec | 3807 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3808 | |
43f3e411 | 3809 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3810 | ++count; |
3811 | } | |
e4a48d9d | 3812 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3813 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3814 | } | |
3815 | ||
779bd270 DE |
3816 | /* This dumps minimal information about the index. |
3817 | It is called via "mt print objfiles". | |
3818 | One use is to verify .gdb_index has been loaded by the | |
3819 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3820 | ||
9291a0cd TT |
3821 | static void |
3822 | dw2_dump (struct objfile *objfile) | |
3823 | { | |
ed2dc618 SM |
3824 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3825 | = get_dwarf2_per_objfile (objfile); | |
3826 | ||
779bd270 DE |
3827 | gdb_assert (dwarf2_per_objfile->using_index); |
3828 | printf_filtered (".gdb_index:"); | |
3829 | if (dwarf2_per_objfile->index_table != NULL) | |
3830 | { | |
3831 | printf_filtered (" version %d\n", | |
3832 | dwarf2_per_objfile->index_table->version); | |
3833 | } | |
3834 | else | |
3835 | printf_filtered (" faked for \"readnow\"\n"); | |
3836 | printf_filtered ("\n"); | |
9291a0cd TT |
3837 | } |
3838 | ||
9291a0cd TT |
3839 | static void |
3840 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3841 | const char *func_name) | |
3842 | { | |
ed2dc618 SM |
3843 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3844 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3845 | |
ed2dc618 SM |
3846 | struct dw2_symtab_iterator iter; |
3847 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3848 | |
2b79f376 | 3849 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3850 | |
ed2dc618 | 3851 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 3852 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 3853 | |
9291a0cd TT |
3854 | } |
3855 | ||
3856 | static void | |
3857 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3858 | { | |
ed2dc618 SM |
3859 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3860 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3861 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3862 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 3863 | |
ed2dc618 | 3864 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3865 | { |
ff4c9fec | 3866 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3867 | |
58f0c718 TT |
3868 | /* We don't want to directly expand a partial CU, because if we |
3869 | read it with the wrong language, then assertion failures can | |
3870 | be triggered later on. See PR symtab/23010. So, tell | |
3871 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3872 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
3873 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
3874 | } |
3875 | } | |
3876 | ||
3877 | static void | |
652a8996 JK |
3878 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3879 | const char *fullname) | |
9291a0cd | 3880 | { |
ed2dc618 SM |
3881 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3882 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3883 | |
3884 | /* We don't need to consider type units here. | |
3885 | This is only called for examining code, e.g. expand_line_sal. | |
3886 | There can be an order of magnitude (or more) more type units | |
3887 | than comp units, and we avoid them if we can. */ | |
3888 | ||
b76e467d | 3889 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3890 | { |
3d7bb9d9 | 3891 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3892 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3893 | continue; |
3894 | ||
b76e467d | 3895 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3896 | if (file_data == NULL) |
9291a0cd TT |
3897 | continue; |
3898 | ||
b76e467d | 3899 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3900 | { |
652a8996 JK |
3901 | const char *this_fullname = file_data->file_names[j]; |
3902 | ||
3903 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3904 | { |
58f0c718 | 3905 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
3906 | break; |
3907 | } | |
3908 | } | |
3909 | } | |
3910 | } | |
3911 | ||
9291a0cd | 3912 | static void |
199b4314 TT |
3913 | dw2_map_matching_symbols |
3914 | (struct objfile *objfile, | |
b054970d | 3915 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3916 | int global, |
3917 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3918 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3919 | { |
40658b94 | 3920 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3921 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3922 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3923 | } |
3924 | ||
e1ef7d7a PA |
3925 | /* Starting from a search name, return the string that finds the upper |
3926 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3927 | list. Returns the empty string to indicate that the upper bound is | |
3928 | the end of the list. */ | |
3929 | ||
3930 | static std::string | |
3931 | make_sort_after_prefix_name (const char *search_name) | |
3932 | { | |
3933 | /* When looking to complete "func", we find the upper bound of all | |
3934 | symbols that start with "func" by looking for where we'd insert | |
3935 | the closest string that would follow "func" in lexicographical | |
3936 | order. Usually, that's "func"-with-last-character-incremented, | |
3937 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3938 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3939 | Especially mind the 0xff character, which is a valid character in | |
3940 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3941 | rule out compilers allowing it in identifiers. Note that | |
3942 | conveniently, strcmp/strcasecmp are specified to compare | |
3943 | characters interpreted as unsigned char. So what we do is treat | |
3944 | the whole string as a base 256 number composed of a sequence of | |
3945 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3946 | to 0, and carries 1 to the following more-significant position. | |
3947 | If the very first character in SEARCH_NAME ends up incremented | |
3948 | and carries/overflows, then the upper bound is the end of the | |
3949 | list. The string after the empty string is also the empty | |
3950 | string. | |
3951 | ||
3952 | Some examples of this operation: | |
3953 | ||
3954 | SEARCH_NAME => "+1" RESULT | |
3955 | ||
3956 | "abc" => "abd" | |
3957 | "ab\xff" => "ac" | |
3958 | "\xff" "a" "\xff" => "\xff" "b" | |
3959 | "\xff" => "" | |
3960 | "\xff\xff" => "" | |
3961 | "" => "" | |
3962 | ||
3963 | Then, with these symbols for example: | |
3964 | ||
3965 | func | |
3966 | func1 | |
3967 | fund | |
3968 | ||
3969 | completing "func" looks for symbols between "func" and | |
3970 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3971 | which finds "func" and "func1", but not "fund". | |
3972 | ||
3973 | And with: | |
3974 | ||
3975 | funcÿ (Latin1 'ÿ' [0xff]) | |
3976 | funcÿ1 | |
3977 | fund | |
3978 | ||
3979 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3980 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3981 | ||
3982 | And with: | |
3983 | ||
3984 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3985 | ÿÿ1 | |
3986 | ||
3987 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3988 | the end of the list. | |
3989 | */ | |
3990 | std::string after = search_name; | |
3991 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3992 | after.pop_back (); | |
3993 | if (!after.empty ()) | |
3994 | after.back () = (unsigned char) after.back () + 1; | |
3995 | return after; | |
3996 | } | |
3997 | ||
5c58de74 | 3998 | /* See declaration. */ |
61d96d7e | 3999 | |
5c58de74 PA |
4000 | std::pair<std::vector<name_component>::const_iterator, |
4001 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4002 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 4003 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 4004 | { |
5c58de74 PA |
4005 | auto *name_cmp |
4006 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4007 | |
3b00ef10 TT |
4008 | const char *lang_name |
4009 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 4010 | |
3f563c84 PA |
4011 | /* Comparison function object for lower_bound that matches against a |
4012 | given symbol name. */ | |
4013 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4014 | const char *name) | |
4015 | { | |
5c58de74 | 4016 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4017 | const char *elem_name = elem_qualified + elem.name_offset; |
4018 | return name_cmp (elem_name, name) < 0; | |
4019 | }; | |
4020 | ||
4021 | /* Comparison function object for upper_bound that matches against a | |
4022 | given symbol name. */ | |
4023 | auto lookup_compare_upper = [&] (const char *name, | |
4024 | const name_component &elem) | |
4025 | { | |
5c58de74 | 4026 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4027 | const char *elem_name = elem_qualified + elem.name_offset; |
4028 | return name_cmp (name, elem_name) < 0; | |
4029 | }; | |
4030 | ||
5c58de74 PA |
4031 | auto begin = this->name_components.begin (); |
4032 | auto end = this->name_components.end (); | |
3f563c84 PA |
4033 | |
4034 | /* Find the lower bound. */ | |
4035 | auto lower = [&] () | |
4036 | { | |
3b00ef10 | 4037 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4038 | return begin; |
4039 | else | |
3b00ef10 | 4040 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4041 | } (); |
4042 | ||
4043 | /* Find the upper bound. */ | |
4044 | auto upper = [&] () | |
4045 | { | |
5c58de74 | 4046 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4047 | { |
e1ef7d7a PA |
4048 | /* In completion mode, we want UPPER to point past all |
4049 | symbols names that have the same prefix. I.e., with | |
4050 | these symbols, and completing "func": | |
4051 | ||
4052 | function << lower bound | |
4053 | function1 | |
4054 | other_function << upper bound | |
4055 | ||
4056 | We find the upper bound by looking for the insertion | |
4057 | point of "func"-with-last-character-incremented, | |
4058 | i.e. "fund". */ | |
3b00ef10 | 4059 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4060 | if (after.empty ()) |
3f563c84 | 4061 | return end; |
e6b2f5ef PA |
4062 | return std::lower_bound (lower, end, after.c_str (), |
4063 | lookup_compare_lower); | |
3f563c84 PA |
4064 | } |
4065 | else | |
3b00ef10 | 4066 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4067 | } (); |
4068 | ||
5c58de74 PA |
4069 | return {lower, upper}; |
4070 | } | |
4071 | ||
4072 | /* See declaration. */ | |
4073 | ||
4074 | void | |
44ed8f3e | 4075 | mapped_index_base::build_name_components () |
5c58de74 PA |
4076 | { |
4077 | if (!this->name_components.empty ()) | |
4078 | return; | |
4079 | ||
4080 | this->name_components_casing = case_sensitivity; | |
4081 | auto *name_cmp | |
4082 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4083 | ||
4084 | /* The code below only knows how to break apart components of C++ | |
4085 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4086 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4087 | auto count = this->symbol_name_count (); |
4088 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4089 | { |
44ed8f3e | 4090 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4091 | continue; |
4092 | ||
4093 | const char *name = this->symbol_name_at (idx); | |
4094 | ||
4095 | /* Add each name component to the name component table. */ | |
4096 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4097 | |
4098 | if (strstr (name, "::") != nullptr) | |
4099 | { | |
4100 | for (unsigned int current_len = cp_find_first_component (name); | |
4101 | name[current_len] != '\0'; | |
4102 | current_len += cp_find_first_component (name + current_len)) | |
4103 | { | |
4104 | gdb_assert (name[current_len] == ':'); | |
4105 | this->name_components.push_back ({previous_len, idx}); | |
4106 | /* Skip the '::'. */ | |
4107 | current_len += 2; | |
4108 | previous_len = current_len; | |
4109 | } | |
4110 | } | |
4111 | else | |
5c58de74 | 4112 | { |
3b00ef10 TT |
4113 | /* Handle the Ada encoded (aka mangled) form here. */ |
4114 | for (const char *iter = strstr (name, "__"); | |
4115 | iter != nullptr; | |
4116 | iter = strstr (iter, "__")) | |
4117 | { | |
4118 | this->name_components.push_back ({previous_len, idx}); | |
4119 | iter += 2; | |
4120 | previous_len = iter - name; | |
4121 | } | |
5c58de74 | 4122 | } |
3b00ef10 | 4123 | |
5c58de74 PA |
4124 | this->name_components.push_back ({previous_len, idx}); |
4125 | } | |
4126 | ||
4127 | /* Sort name_components elements by name. */ | |
4128 | auto name_comp_compare = [&] (const name_component &left, | |
4129 | const name_component &right) | |
4130 | { | |
4131 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4132 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4133 | ||
4134 | const char *left_name = left_qualified + left.name_offset; | |
4135 | const char *right_name = right_qualified + right.name_offset; | |
4136 | ||
4137 | return name_cmp (left_name, right_name) < 0; | |
4138 | }; | |
4139 | ||
4140 | std::sort (this->name_components.begin (), | |
4141 | this->name_components.end (), | |
4142 | name_comp_compare); | |
4143 | } | |
4144 | ||
4145 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4146 | mapped_index_base instead of the containing objfile. This is split |
4147 | to a separate function in order to be able to unit test the | |
4148 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4149 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4150 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4151 | |
4152 | static void | |
4153 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4154 | (mapped_index_base &index, |
5c58de74 PA |
4155 | const lookup_name_info &lookup_name_in, |
4156 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4157 | enum search_domain kind, | |
3b00ef10 | 4158 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4159 | { |
4160 | lookup_name_info lookup_name_without_params | |
4161 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4162 | |
4163 | /* Build the symbol name component sorted vector, if we haven't | |
4164 | yet. */ | |
4165 | index.build_name_components (); | |
4166 | ||
3f563c84 PA |
4167 | /* The same symbol may appear more than once in the range though. |
4168 | E.g., if we're looking for symbols that complete "w", and we have | |
4169 | a symbol named "w1::w2", we'll find the two name components for | |
4170 | that same symbol in the range. To be sure we only call the | |
4171 | callback once per symbol, we first collect the symbol name | |
4172 | indexes that matched in a temporary vector and ignore | |
4173 | duplicates. */ | |
4174 | std::vector<offset_type> matches; | |
3f563c84 | 4175 | |
3b00ef10 TT |
4176 | struct name_and_matcher |
4177 | { | |
4178 | symbol_name_matcher_ftype *matcher; | |
4179 | const std::string &name; | |
4180 | ||
4181 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4182 | { |
3b00ef10 TT |
4183 | return matcher == other.matcher && name == other.name; |
4184 | } | |
4185 | }; | |
4186 | ||
4187 | /* A vector holding all the different symbol name matchers, for all | |
4188 | languages. */ | |
4189 | std::vector<name_and_matcher> matchers; | |
4190 | ||
4191 | for (int i = 0; i < nr_languages; i++) | |
4192 | { | |
4193 | enum language lang_e = (enum language) i; | |
4194 | ||
4195 | const language_defn *lang = language_def (lang_e); | |
4196 | symbol_name_matcher_ftype *name_matcher | |
4197 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4198 | |
3b00ef10 TT |
4199 | name_and_matcher key { |
4200 | name_matcher, | |
4201 | lookup_name_without_params.language_lookup_name (lang_e) | |
4202 | }; | |
4203 | ||
4204 | /* Don't insert the same comparison routine more than once. | |
4205 | Note that we do this linear walk. This is not a problem in | |
4206 | practice because the number of supported languages is | |
4207 | low. */ | |
4208 | if (std::find (matchers.begin (), matchers.end (), key) | |
4209 | != matchers.end ()) | |
9291a0cd | 4210 | continue; |
3b00ef10 TT |
4211 | matchers.push_back (std::move (key)); |
4212 | ||
4213 | auto bounds | |
4214 | = index.find_name_components_bounds (lookup_name_without_params, | |
4215 | lang_e); | |
4216 | ||
4217 | /* Now for each symbol name in range, check to see if we have a name | |
4218 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4219 | ||
4220 | for (; bounds.first != bounds.second; ++bounds.first) | |
4221 | { | |
4222 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4223 | ||
4224 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4225 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4226 | continue; | |
9291a0cd | 4227 | |
3b00ef10 TT |
4228 | matches.push_back (bounds.first->idx); |
4229 | } | |
3f563c84 PA |
4230 | } |
4231 | ||
4232 | std::sort (matches.begin (), matches.end ()); | |
4233 | ||
4234 | /* Finally call the callback, once per match. */ | |
4235 | ULONGEST prev = -1; | |
4236 | for (offset_type idx : matches) | |
4237 | { | |
4238 | if (prev != idx) | |
4239 | { | |
3b00ef10 TT |
4240 | if (!match_callback (idx)) |
4241 | break; | |
3f563c84 PA |
4242 | prev = idx; |
4243 | } | |
4244 | } | |
4245 | ||
4246 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4247 | (offset_type)-1 are both possible values. */ | |
4248 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4249 | } | |
4250 | ||
c62446b1 PA |
4251 | #if GDB_SELF_TEST |
4252 | ||
4253 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4254 | ||
a3c5fafd PA |
4255 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4256 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4257 | mapped_index_base interface. Builds an index from the symbol list | |
4258 | passed as parameter to the constructor. */ | |
4259 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4260 | { |
4261 | public: | |
a3c5fafd PA |
4262 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4263 | : m_symbol_table (symbols) | |
c62446b1 PA |
4264 | {} |
4265 | ||
a3c5fafd | 4266 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4267 | |
a3c5fafd | 4268 | /* Return the number of names in the symbol table. */ |
632e107b | 4269 | size_t symbol_name_count () const override |
c62446b1 | 4270 | { |
a3c5fafd | 4271 | return m_symbol_table.size (); |
c62446b1 PA |
4272 | } |
4273 | ||
a3c5fafd | 4274 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4275 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4276 | { |
4277 | return m_symbol_table[idx]; | |
4278 | } | |
c62446b1 | 4279 | |
a3c5fafd PA |
4280 | private: |
4281 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4282 | }; |
4283 | ||
4284 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4285 | string, to pass to print routines. */ | |
4286 | ||
4287 | static const char * | |
4288 | string_or_null (const char *str) | |
4289 | { | |
4290 | return str != NULL ? str : "<null>"; | |
4291 | } | |
4292 | ||
4293 | /* Check if a lookup_name_info built from | |
4294 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4295 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4296 | matching order. If no match expected, then an empty list is | |
4297 | specified. Returns true on success. On failure prints a warning | |
4298 | indicating the file:line that failed, and returns false. */ | |
4299 | ||
4300 | static bool | |
4301 | check_match (const char *file, int line, | |
4302 | mock_mapped_index &mock_index, | |
4303 | const char *name, symbol_name_match_type match_type, | |
4304 | bool completion_mode, | |
4305 | std::initializer_list<const char *> expected_list) | |
4306 | { | |
4307 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4308 | ||
4309 | bool matched = true; | |
4310 | ||
4311 | auto mismatch = [&] (const char *expected_str, | |
4312 | const char *got) | |
4313 | { | |
4314 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4315 | "expected=\"%s\", got=\"%s\"\n"), | |
4316 | file, line, | |
4317 | (match_type == symbol_name_match_type::FULL | |
4318 | ? "FULL" : "WILD"), | |
4319 | name, string_or_null (expected_str), string_or_null (got)); | |
4320 | matched = false; | |
4321 | }; | |
4322 | ||
4323 | auto expected_it = expected_list.begin (); | |
4324 | auto expected_end = expected_list.end (); | |
4325 | ||
a3c5fafd | 4326 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4327 | NULL, ALL_DOMAIN, |
4328 | [&] (offset_type idx) | |
4329 | { | |
a3c5fafd | 4330 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4331 | const char *expected_str |
4332 | = expected_it == expected_end ? NULL : *expected_it++; | |
4333 | ||
4334 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4335 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4336 | return true; |
c62446b1 PA |
4337 | }); |
4338 | ||
4339 | const char *expected_str | |
4340 | = expected_it == expected_end ? NULL : *expected_it++; | |
4341 | if (expected_str != NULL) | |
4342 | mismatch (expected_str, NULL); | |
4343 | ||
4344 | return matched; | |
4345 | } | |
4346 | ||
4347 | /* The symbols added to the mock mapped_index for testing (in | |
4348 | canonical form). */ | |
4349 | static const char *test_symbols[] = { | |
4350 | "function", | |
4351 | "std::bar", | |
4352 | "std::zfunction", | |
4353 | "std::zfunction2", | |
4354 | "w1::w2", | |
4355 | "ns::foo<char*>", | |
4356 | "ns::foo<int>", | |
4357 | "ns::foo<long>", | |
a20714ff PA |
4358 | "ns2::tmpl<int>::foo2", |
4359 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4360 | |
e1ef7d7a PA |
4361 | /* These are used to check that the increment-last-char in the |
4362 | matching algorithm for completion doesn't match "t1_fund" when | |
4363 | completing "t1_func". */ | |
4364 | "t1_func", | |
4365 | "t1_func1", | |
4366 | "t1_fund", | |
4367 | "t1_fund1", | |
4368 | ||
4369 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4370 | cp-name-parser understands this as a single identifier ("função" | |
4371 | is "function" in PT). */ | |
4372 | u8"u8função", | |
4373 | ||
4374 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4375 | "yfunc\377", | |
4376 | ||
4377 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4378 | "\377", | |
4379 | "\377\377123", | |
4380 | ||
c62446b1 PA |
4381 | /* A name with all sorts of complications. Starts with "z" to make |
4382 | it easier for the completion tests below. */ | |
4383 | #define Z_SYM_NAME \ | |
4384 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4385 | "::tuple<(anonymous namespace)::ui*, " \ | |
4386 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4387 | ||
4388 | Z_SYM_NAME | |
4389 | }; | |
4390 | ||
a3c5fafd PA |
4391 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4392 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4393 | in completion mode. */ | |
5c58de74 PA |
4394 | |
4395 | static bool | |
a3c5fafd | 4396 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4397 | const char *search_name, |
4398 | gdb::array_view<const char *> expected_syms) | |
4399 | { | |
4400 | lookup_name_info lookup_name (search_name, | |
4401 | symbol_name_match_type::FULL, true); | |
4402 | ||
3b00ef10 TT |
4403 | auto bounds = index.find_name_components_bounds (lookup_name, |
4404 | language_cplus); | |
5c58de74 PA |
4405 | |
4406 | size_t distance = std::distance (bounds.first, bounds.second); | |
4407 | if (distance != expected_syms.size ()) | |
4408 | return false; | |
4409 | ||
4410 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4411 | { | |
4412 | auto nc_elem = bounds.first + exp_elem; | |
4413 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4414 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4415 | return false; | |
4416 | } | |
4417 | ||
4418 | return true; | |
4419 | } | |
4420 | ||
4421 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4422 | method. */ | |
4423 | ||
c62446b1 | 4424 | static void |
5c58de74 PA |
4425 | test_mapped_index_find_name_component_bounds () |
4426 | { | |
4427 | mock_mapped_index mock_index (test_symbols); | |
4428 | ||
a3c5fafd | 4429 | mock_index.build_name_components (); |
5c58de74 PA |
4430 | |
4431 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4432 | method in completion mode. */ | |
4433 | { | |
4434 | static const char *expected_syms[] = { | |
4435 | "t1_func", | |
4436 | "t1_func1", | |
5c58de74 PA |
4437 | }; |
4438 | ||
a3c5fafd | 4439 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4440 | "t1_func", expected_syms)); |
4441 | } | |
4442 | ||
4443 | /* Check that the increment-last-char in the name matching algorithm | |
4444 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4445 | { | |
4446 | static const char *expected_syms1[] = { | |
4447 | "\377", | |
4448 | "\377\377123", | |
4449 | }; | |
a3c5fafd | 4450 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4451 | "\377", expected_syms1)); |
4452 | ||
4453 | static const char *expected_syms2[] = { | |
4454 | "\377\377123", | |
4455 | }; | |
a3c5fafd | 4456 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4457 | "\377\377", expected_syms2)); |
4458 | } | |
4459 | } | |
4460 | ||
4461 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4462 | ||
4463 | static void | |
4464 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4465 | { |
4466 | mock_mapped_index mock_index (test_symbols); | |
4467 | ||
4468 | /* We let all tests run until the end even if some fails, for debug | |
4469 | convenience. */ | |
4470 | bool any_mismatch = false; | |
4471 | ||
4472 | /* Create the expected symbols list (an initializer_list). Needed | |
4473 | because lists have commas, and we need to pass them to CHECK, | |
4474 | which is a macro. */ | |
4475 | #define EXPECT(...) { __VA_ARGS__ } | |
4476 | ||
4477 | /* Wrapper for check_match that passes down the current | |
4478 | __FILE__/__LINE__. */ | |
4479 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4480 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4481 | mock_index, \ | |
4482 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4483 | EXPECTED_LIST) | |
4484 | ||
4485 | /* Identity checks. */ | |
4486 | for (const char *sym : test_symbols) | |
4487 | { | |
4488 | /* Should be able to match all existing symbols. */ | |
4489 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4490 | EXPECT (sym)); | |
4491 | ||
4492 | /* Should be able to match all existing symbols with | |
4493 | parameters. */ | |
4494 | std::string with_params = std::string (sym) + "(int)"; | |
4495 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4496 | EXPECT (sym)); | |
4497 | ||
4498 | /* Should be able to match all existing symbols with | |
4499 | parameters and qualifiers. */ | |
4500 | with_params = std::string (sym) + " ( int ) const"; | |
4501 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4502 | EXPECT (sym)); | |
4503 | ||
4504 | /* This should really find sym, but cp-name-parser.y doesn't | |
4505 | know about lvalue/rvalue qualifiers yet. */ | |
4506 | with_params = std::string (sym) + " ( int ) &&"; | |
4507 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4508 | {}); | |
4509 | } | |
4510 | ||
e1ef7d7a PA |
4511 | /* Check that the name matching algorithm for completion doesn't get |
4512 | confused with Latin1 'ÿ' / 0xff. */ | |
4513 | { | |
4514 | static const char str[] = "\377"; | |
4515 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4516 | EXPECT ("\377", "\377\377123")); | |
4517 | } | |
4518 | ||
4519 | /* Check that the increment-last-char in the matching algorithm for | |
4520 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4521 | { | |
4522 | static const char str[] = "t1_func"; | |
4523 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4524 | EXPECT ("t1_func", "t1_func1")); | |
4525 | } | |
4526 | ||
c62446b1 PA |
4527 | /* Check that completion mode works at each prefix of the expected |
4528 | symbol name. */ | |
4529 | { | |
4530 | static const char str[] = "function(int)"; | |
4531 | size_t len = strlen (str); | |
4532 | std::string lookup; | |
4533 | ||
4534 | for (size_t i = 1; i < len; i++) | |
4535 | { | |
4536 | lookup.assign (str, i); | |
4537 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4538 | EXPECT ("function")); | |
4539 | } | |
4540 | } | |
4541 | ||
4542 | /* While "w" is a prefix of both components, the match function | |
4543 | should still only be called once. */ | |
4544 | { | |
4545 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4546 | EXPECT ("w1::w2")); | |
a20714ff PA |
4547 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4548 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4549 | } |
4550 | ||
4551 | /* Same, with a "complicated" symbol. */ | |
4552 | { | |
4553 | static const char str[] = Z_SYM_NAME; | |
4554 | size_t len = strlen (str); | |
4555 | std::string lookup; | |
4556 | ||
4557 | for (size_t i = 1; i < len; i++) | |
4558 | { | |
4559 | lookup.assign (str, i); | |
4560 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4561 | EXPECT (Z_SYM_NAME)); | |
4562 | } | |
4563 | } | |
4564 | ||
4565 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4566 | { | |
4567 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4568 | {}); | |
4569 | } | |
4570 | ||
4571 | /* A complete symbol with parameters matches any overload, since the | |
4572 | index has no overload info. */ | |
4573 | { | |
4574 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4575 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4576 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4577 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4578 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4579 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4580 | } |
4581 | ||
4582 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4583 | template argument list. */ | |
4584 | { | |
4585 | static const char expected[] = "ns::foo<int>"; | |
4586 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4587 | EXPECT (expected)); | |
a20714ff PA |
4588 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4589 | EXPECT (expected)); | |
c62446b1 PA |
4590 | } |
4591 | ||
4592 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4593 | template argument list that includes a pointer. */ | |
4594 | { | |
4595 | static const char expected[] = "ns::foo<char*>"; | |
4596 | /* Try both completion and non-completion modes. */ | |
4597 | static const bool completion_mode[2] = {false, true}; | |
4598 | for (size_t i = 0; i < 2; i++) | |
4599 | { | |
4600 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4601 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4602 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4603 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4604 | |
4605 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4606 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4607 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4608 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4609 | } |
4610 | } | |
4611 | ||
4612 | { | |
4613 | /* Check method qualifiers are ignored. */ | |
4614 | static const char expected[] = "ns::foo<char*>"; | |
4615 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4616 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4617 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4618 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4619 | CHECK_MATCH ("foo < char * > ( int ) const", |
4620 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4621 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4622 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4623 | } |
4624 | ||
4625 | /* Test lookup names that don't match anything. */ | |
4626 | { | |
a20714ff PA |
4627 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4628 | {}); | |
4629 | ||
c62446b1 PA |
4630 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4631 | {}); | |
4632 | } | |
4633 | ||
a20714ff PA |
4634 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4635 | which should not be confused with a parameter list. */ | |
4636 | { | |
4637 | static const char *syms[] = { | |
4638 | "A::B::C", | |
4639 | "B::C", | |
4640 | "C", | |
4641 | "A :: B :: C ( int )", | |
4642 | "B :: C ( int )", | |
4643 | "C ( int )", | |
4644 | }; | |
4645 | ||
4646 | for (const char *s : syms) | |
4647 | { | |
4648 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4649 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4650 | } | |
4651 | } | |
4652 | ||
4653 | { | |
4654 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4655 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4656 | EXPECT (expected)); | |
4657 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4658 | EXPECT (expected)); | |
4659 | } | |
4660 | ||
c62446b1 PA |
4661 | SELF_CHECK (!any_mismatch); |
4662 | ||
4663 | #undef EXPECT | |
4664 | #undef CHECK_MATCH | |
4665 | } | |
4666 | ||
5c58de74 PA |
4667 | static void |
4668 | run_test () | |
4669 | { | |
4670 | test_mapped_index_find_name_component_bounds (); | |
4671 | test_dw2_expand_symtabs_matching_symbol (); | |
4672 | } | |
4673 | ||
c62446b1 PA |
4674 | }} // namespace selftests::dw2_expand_symtabs_matching |
4675 | ||
4676 | #endif /* GDB_SELF_TEST */ | |
4677 | ||
4b514bc8 JK |
4678 | /* If FILE_MATCHER is NULL or if PER_CU has |
4679 | dwarf2_per_cu_quick_data::MARK set (see | |
4680 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4681 | EXPANSION_NOTIFY on it. */ | |
4682 | ||
4683 | static void | |
4684 | dw2_expand_symtabs_matching_one | |
4685 | (struct dwarf2_per_cu_data *per_cu, | |
4686 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4687 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4688 | { | |
4689 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4690 | { | |
4691 | bool symtab_was_null | |
4692 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4693 | ||
58f0c718 | 4694 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4695 | |
4696 | if (expansion_notify != NULL | |
4697 | && symtab_was_null | |
4698 | && per_cu->v.quick->compunit_symtab != NULL) | |
4699 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4700 | } | |
4701 | } | |
4702 | ||
3f563c84 PA |
4703 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4704 | matched, to expand corresponding CUs that were marked. IDX is the | |
4705 | index of the symbol name that matched. */ | |
4706 | ||
4707 | static void | |
4708 | dw2_expand_marked_cus | |
ed2dc618 | 4709 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4710 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4711 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4712 | search_domain kind) | |
4713 | { | |
3f563c84 PA |
4714 | offset_type *vec, vec_len, vec_idx; |
4715 | bool global_seen = false; | |
ed2dc618 | 4716 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4717 | |
61920122 | 4718 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4719 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4720 | vec_len = MAYBE_SWAP (vec[0]); |
4721 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4722 | { | |
61920122 PA |
4723 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4724 | /* This value is only valid for index versions >= 7. */ | |
4725 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4726 | gdb_index_symbol_kind symbol_kind = | |
4727 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4728 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4729 | /* Only check the symbol attributes if they're present. | |
4730 | Indices prior to version 7 don't record them, | |
4731 | and indices >= 7 may elide them for certain symbols | |
4732 | (gold does this). */ | |
4733 | int attrs_valid = | |
4734 | (index.version >= 7 | |
4735 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4736 | ||
4737 | /* Work around gold/15646. */ | |
4738 | if (attrs_valid) | |
9291a0cd | 4739 | { |
61920122 PA |
4740 | if (!is_static && global_seen) |
4741 | continue; | |
4742 | if (!is_static) | |
4743 | global_seen = true; | |
4744 | } | |
3190f0c6 | 4745 | |
61920122 PA |
4746 | /* Only check the symbol's kind if it has one. */ |
4747 | if (attrs_valid) | |
4748 | { | |
4749 | switch (kind) | |
8943b874 | 4750 | { |
61920122 PA |
4751 | case VARIABLES_DOMAIN: |
4752 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4753 | continue; | |
4754 | break; | |
4755 | case FUNCTIONS_DOMAIN: | |
4756 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4757 | continue; |
61920122 PA |
4758 | break; |
4759 | case TYPES_DOMAIN: | |
4760 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4761 | continue; | |
4762 | break; | |
59c35742 AB |
4763 | case MODULES_DOMAIN: |
4764 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4765 | continue; | |
4766 | break; | |
61920122 PA |
4767 | default: |
4768 | break; | |
8943b874 | 4769 | } |
61920122 | 4770 | } |
8943b874 | 4771 | |
61920122 | 4772 | /* Don't crash on bad data. */ |
b76e467d | 4773 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4774 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4775 | { |
b98664d3 | 4776 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4777 | " [in module %s]"), |
4778 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4779 | continue; |
4780 | } | |
4781 | ||
ff4c9fec | 4782 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4783 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4784 | expansion_notify); | |
61920122 PA |
4785 | } |
4786 | } | |
4787 | ||
4b514bc8 JK |
4788 | /* If FILE_MATCHER is non-NULL, set all the |
4789 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4790 | that match FILE_MATCHER. */ | |
4791 | ||
61920122 | 4792 | static void |
4b514bc8 | 4793 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4794 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4795 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4796 | { |
4b514bc8 | 4797 | if (file_matcher == NULL) |
61920122 PA |
4798 | return; |
4799 | ||
4b514bc8 JK |
4800 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4801 | ||
4802 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4803 | htab_eq_pointer, | |
4804 | NULL, xcalloc, xfree)); | |
4805 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4806 | htab_eq_pointer, |
4807 | NULL, xcalloc, xfree)); | |
61920122 | 4808 | |
4b514bc8 JK |
4809 | /* The rule is CUs specify all the files, including those used by |
4810 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4811 | |
b76e467d | 4812 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4813 | { |
927aa2e7 JK |
4814 | QUIT; |
4815 | ||
4816 | per_cu->v.quick->mark = 0; | |
4817 | ||
4818 | /* We only need to look at symtabs not already expanded. */ | |
4819 | if (per_cu->v.quick->compunit_symtab) | |
4820 | continue; | |
4821 | ||
b76e467d | 4822 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4823 | if (file_data == NULL) |
4824 | continue; | |
4825 | ||
4826 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4827 | continue; | |
4828 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4829 | { | |
4830 | per_cu->v.quick->mark = 1; | |
4831 | continue; | |
4832 | } | |
4833 | ||
b76e467d | 4834 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4835 | { |
4836 | const char *this_real_name; | |
4837 | ||
4838 | if (file_matcher (file_data->file_names[j], false)) | |
4839 | { | |
4840 | per_cu->v.quick->mark = 1; | |
4841 | break; | |
4842 | } | |
4843 | ||
4844 | /* Before we invoke realpath, which can get expensive when many | |
4845 | files are involved, do a quick comparison of the basenames. */ | |
4846 | if (!basenames_may_differ | |
4847 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4848 | true)) | |
4849 | continue; | |
4850 | ||
4851 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4852 | if (file_matcher (this_real_name, false)) | |
4853 | { | |
4854 | per_cu->v.quick->mark = 1; | |
4855 | break; | |
4856 | } | |
4857 | } | |
4858 | ||
b76e467d SM |
4859 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4860 | ? visited_found.get () | |
4861 | : visited_not_found.get (), | |
4862 | file_data, INSERT); | |
927aa2e7 JK |
4863 | *slot = file_data; |
4864 | } | |
4865 | } | |
4866 | ||
4867 | static void | |
4868 | dw2_expand_symtabs_matching | |
4869 | (struct objfile *objfile, | |
4870 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4871 | const lookup_name_info &lookup_name, | |
4872 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4873 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4874 | enum search_domain kind) | |
4875 | { | |
ed2dc618 SM |
4876 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4877 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4878 | |
4879 | /* index_table is NULL if OBJF_READNOW. */ | |
4880 | if (!dwarf2_per_objfile->index_table) | |
4881 | return; | |
4882 | ||
ed2dc618 | 4883 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
4884 | |
4885 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
4886 | ||
4887 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
4888 | symbol_matcher, | |
4889 | kind, [&] (offset_type idx) | |
4890 | { | |
ed2dc618 | 4891 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4892 | expansion_notify, kind); |
3b00ef10 | 4893 | return true; |
927aa2e7 JK |
4894 | }); |
4895 | } | |
4896 | ||
4897 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4898 | symtab. */ | |
4899 | ||
4900 | static struct compunit_symtab * | |
4901 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4902 | CORE_ADDR pc) | |
4903 | { | |
4904 | int i; | |
4905 | ||
4906 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4907 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4908 | return cust; | |
4909 | ||
4910 | if (cust->includes == NULL) | |
4911 | return NULL; | |
4912 | ||
4913 | for (i = 0; cust->includes[i]; ++i) | |
4914 | { | |
4915 | struct compunit_symtab *s = cust->includes[i]; | |
4916 | ||
4917 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4918 | if (s != NULL) | |
4919 | return s; | |
4920 | } | |
4921 | ||
4922 | return NULL; | |
4923 | } | |
4924 | ||
4925 | static struct compunit_symtab * | |
4926 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4927 | struct bound_minimal_symbol msymbol, | |
4928 | CORE_ADDR pc, | |
4929 | struct obj_section *section, | |
4930 | int warn_if_readin) | |
4931 | { | |
4932 | struct dwarf2_per_cu_data *data; | |
4933 | struct compunit_symtab *result; | |
4934 | ||
d320c2b5 | 4935 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4936 | return NULL; |
4937 | ||
b3b3bada | 4938 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4939 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4940 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4941 | if (!data) |
4942 | return NULL; | |
4943 | ||
4944 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4945 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
4946 | paddress (get_objfile_arch (objfile), pc)); | |
4947 | ||
4948 | result | |
58f0c718 TT |
4949 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4950 | false), | |
927aa2e7 JK |
4951 | pc); |
4952 | gdb_assert (result != NULL); | |
4953 | return result; | |
4954 | } | |
4955 | ||
4956 | static void | |
4957 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4958 | void *data, int need_fullname) | |
4959 | { | |
ed2dc618 SM |
4960 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4961 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4962 | |
4963 | if (!dwarf2_per_objfile->filenames_cache) | |
4964 | { | |
4965 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4966 | ||
4967 | htab_up visited (htab_create_alloc (10, | |
4968 | htab_hash_pointer, htab_eq_pointer, | |
4969 | NULL, xcalloc, xfree)); | |
4970 | ||
4971 | /* The rule is CUs specify all the files, including those used | |
4972 | by any TU, so there's no need to scan TUs here. We can | |
4973 | ignore file names coming from already-expanded CUs. */ | |
4974 | ||
b76e467d | 4975 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4976 | { |
927aa2e7 JK |
4977 | if (per_cu->v.quick->compunit_symtab) |
4978 | { | |
4979 | void **slot = htab_find_slot (visited.get (), | |
4980 | per_cu->v.quick->file_names, | |
4981 | INSERT); | |
4982 | ||
4983 | *slot = per_cu->v.quick->file_names; | |
4984 | } | |
4985 | } | |
4986 | ||
b76e467d | 4987 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4988 | { |
927aa2e7 JK |
4989 | /* We only need to look at symtabs not already expanded. */ |
4990 | if (per_cu->v.quick->compunit_symtab) | |
4991 | continue; | |
4992 | ||
b76e467d | 4993 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4994 | if (file_data == NULL) |
4995 | continue; | |
4996 | ||
b76e467d | 4997 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4998 | if (*slot) |
4999 | { | |
5000 | /* Already visited. */ | |
5001 | continue; | |
5002 | } | |
5003 | *slot = file_data; | |
5004 | ||
5005 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5006 | { | |
5007 | const char *filename = file_data->file_names[j]; | |
5008 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5009 | } | |
5010 | } | |
5011 | } | |
5012 | ||
5013 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5014 | { | |
5015 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5016 | ||
5017 | if (need_fullname) | |
5018 | this_real_name = gdb_realpath (filename); | |
5019 | (*fun) (filename, this_real_name.get (), data); | |
5020 | }); | |
5021 | } | |
5022 | ||
5023 | static int | |
5024 | dw2_has_symbols (struct objfile *objfile) | |
5025 | { | |
5026 | return 1; | |
5027 | } | |
5028 | ||
5029 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5030 | { | |
5031 | dw2_has_symbols, | |
5032 | dw2_find_last_source_symtab, | |
5033 | dw2_forget_cached_source_info, | |
5034 | dw2_map_symtabs_matching_filename, | |
5035 | dw2_lookup_symbol, | |
5036 | dw2_print_stats, | |
5037 | dw2_dump, | |
927aa2e7 JK |
5038 | dw2_expand_symtabs_for_function, |
5039 | dw2_expand_all_symtabs, | |
5040 | dw2_expand_symtabs_with_fullname, | |
5041 | dw2_map_matching_symbols, | |
5042 | dw2_expand_symtabs_matching, | |
5043 | dw2_find_pc_sect_compunit_symtab, | |
5044 | NULL, | |
5045 | dw2_map_symbol_filenames | |
5046 | }; | |
5047 | ||
5048 | /* DWARF-5 debug_names reader. */ | |
5049 | ||
5050 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5051 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5052 | ||
5053 | /* A helper function that reads the .debug_names section in SECTION | |
5054 | and fills in MAP. FILENAME is the name of the file containing the | |
5055 | section; it is used for error reporting. | |
5056 | ||
5057 | Returns true if all went well, false otherwise. */ | |
5058 | ||
5059 | static bool | |
5060 | read_debug_names_from_section (struct objfile *objfile, | |
5061 | const char *filename, | |
5062 | struct dwarf2_section_info *section, | |
5063 | mapped_debug_names &map) | |
5064 | { | |
96b79293 | 5065 | if (section->empty ()) |
927aa2e7 JK |
5066 | return false; |
5067 | ||
5068 | /* Older elfutils strip versions could keep the section in the main | |
5069 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5070 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5071 | return false; |
5072 | ||
96b79293 | 5073 | section->read (objfile); |
927aa2e7 JK |
5074 | |
5075 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5076 | ||
5077 | const gdb_byte *addr = section->buffer; | |
5078 | ||
96b79293 | 5079 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5080 | |
5081 | unsigned int bytes_read; | |
5082 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5083 | addr += bytes_read; | |
5084 | ||
5085 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5086 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5087 | if (bytes_read + length != section->size) | |
5088 | { | |
5089 | /* There may be multiple per-CU indices. */ | |
5090 | warning (_("Section .debug_names in %s length %s does not match " | |
5091 | "section length %s, ignoring .debug_names."), | |
5092 | filename, plongest (bytes_read + length), | |
5093 | pulongest (section->size)); | |
5094 | return false; | |
5095 | } | |
5096 | ||
5097 | /* The version number. */ | |
5098 | uint16_t version = read_2_bytes (abfd, addr); | |
5099 | addr += 2; | |
5100 | if (version != 5) | |
5101 | { | |
5102 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5103 | "ignoring .debug_names."), | |
5104 | filename, version); | |
5105 | return false; | |
5106 | } | |
5107 | ||
5108 | /* Padding. */ | |
5109 | uint16_t padding = read_2_bytes (abfd, addr); | |
5110 | addr += 2; | |
5111 | if (padding != 0) | |
5112 | { | |
5113 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5114 | "ignoring .debug_names."), | |
5115 | filename, padding); | |
5116 | return false; | |
5117 | } | |
5118 | ||
5119 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5120 | map.cu_count = read_4_bytes (abfd, addr); | |
5121 | addr += 4; | |
5122 | ||
5123 | /* local_type_unit_count - The number of TUs in the local TU | |
5124 | list. */ | |
5125 | map.tu_count = read_4_bytes (abfd, addr); | |
5126 | addr += 4; | |
5127 | ||
5128 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5129 | list. */ | |
5130 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5131 | addr += 4; | |
5132 | if (foreign_tu_count != 0) | |
5133 | { | |
5134 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5135 | "ignoring .debug_names."), | |
5136 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5137 | return false; | |
5138 | } | |
5139 | ||
5140 | /* bucket_count - The number of hash buckets in the hash lookup | |
5141 | table. */ | |
5142 | map.bucket_count = read_4_bytes (abfd, addr); | |
5143 | addr += 4; | |
5144 | ||
5145 | /* name_count - The number of unique names in the index. */ | |
5146 | map.name_count = read_4_bytes (abfd, addr); | |
5147 | addr += 4; | |
5148 | ||
5149 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5150 | table. */ | |
5151 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5152 | addr += 4; | |
5153 | ||
5154 | /* augmentation_string_size - The size in bytes of the augmentation | |
5155 | string. This value is rounded up to a multiple of 4. */ | |
5156 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5157 | addr += 4; | |
5158 | map.augmentation_is_gdb = ((augmentation_string_size | |
5159 | == sizeof (dwarf5_augmentation)) | |
5160 | && memcmp (addr, dwarf5_augmentation, | |
5161 | sizeof (dwarf5_augmentation)) == 0); | |
5162 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5163 | addr += augmentation_string_size; | |
5164 | ||
5165 | /* List of CUs */ | |
5166 | map.cu_table_reordered = addr; | |
5167 | addr += map.cu_count * map.offset_size; | |
5168 | ||
5169 | /* List of Local TUs */ | |
5170 | map.tu_table_reordered = addr; | |
5171 | addr += map.tu_count * map.offset_size; | |
5172 | ||
5173 | /* Hash Lookup Table */ | |
5174 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5175 | addr += map.bucket_count * 4; | |
5176 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5177 | addr += map.name_count * 4; | |
5178 | ||
5179 | /* Name Table */ | |
5180 | map.name_table_string_offs_reordered = addr; | |
5181 | addr += map.name_count * map.offset_size; | |
5182 | map.name_table_entry_offs_reordered = addr; | |
5183 | addr += map.name_count * map.offset_size; | |
5184 | ||
5185 | const gdb_byte *abbrev_table_start = addr; | |
5186 | for (;;) | |
5187 | { | |
927aa2e7 JK |
5188 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5189 | addr += bytes_read; | |
5190 | if (index_num == 0) | |
5191 | break; | |
5192 | ||
5193 | const auto insertpair | |
5194 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5195 | if (!insertpair.second) | |
5196 | { | |
5197 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5198 | "ignoring .debug_names."), | |
5199 | filename, pulongest (index_num)); | |
5200 | return false; | |
5201 | } | |
5202 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5203 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5204 | addr += bytes_read; | |
5205 | ||
5206 | for (;;) | |
5207 | { | |
5208 | mapped_debug_names::index_val::attr attr; | |
5209 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5210 | addr += bytes_read; | |
5211 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5212 | addr += bytes_read; | |
5213 | if (attr.form == DW_FORM_implicit_const) | |
5214 | { | |
5215 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5216 | &bytes_read); | |
5217 | addr += bytes_read; | |
5218 | } | |
5219 | if (attr.dw_idx == 0 && attr.form == 0) | |
5220 | break; | |
5221 | indexval.attr_vec.push_back (std::move (attr)); | |
5222 | } | |
5223 | } | |
5224 | if (addr != abbrev_table_start + abbrev_table_size) | |
5225 | { | |
5226 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5227 | "of size %s vs. written as %u, ignoring .debug_names."), |
5228 | filename, plongest (addr - abbrev_table_start), | |
5229 | abbrev_table_size); | |
927aa2e7 JK |
5230 | return false; |
5231 | } | |
5232 | map.entry_pool = addr; | |
5233 | ||
5234 | return true; | |
5235 | } | |
5236 | ||
5237 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5238 | list. */ | |
5239 | ||
5240 | static void | |
ed2dc618 | 5241 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5242 | const mapped_debug_names &map, |
5243 | dwarf2_section_info §ion, | |
b76e467d | 5244 | bool is_dwz) |
927aa2e7 JK |
5245 | { |
5246 | sect_offset sect_off_prev; | |
5247 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5248 | { | |
5249 | sect_offset sect_off_next; | |
5250 | if (i < map.cu_count) | |
5251 | { | |
5252 | sect_off_next | |
5253 | = (sect_offset) (extract_unsigned_integer | |
5254 | (map.cu_table_reordered + i * map.offset_size, | |
5255 | map.offset_size, | |
5256 | map.dwarf5_byte_order)); | |
5257 | } | |
5258 | else | |
5259 | sect_off_next = (sect_offset) section.size; | |
5260 | if (i >= 1) | |
5261 | { | |
5262 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5263 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5264 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5265 | sect_off_prev, length); |
b76e467d | 5266 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5267 | } |
5268 | sect_off_prev = sect_off_next; | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5273 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5274 | |
5275 | static void | |
ed2dc618 | 5276 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5277 | const mapped_debug_names &map, |
5278 | const mapped_debug_names &dwz_map) | |
5279 | { | |
b76e467d SM |
5280 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5281 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5282 | |
ed2dc618 SM |
5283 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5284 | dwarf2_per_objfile->info, | |
b76e467d | 5285 | false /* is_dwz */); |
927aa2e7 JK |
5286 | |
5287 | if (dwz_map.cu_count == 0) | |
5288 | return; | |
5289 | ||
ed2dc618 SM |
5290 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5291 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5292 | true /* is_dwz */); |
927aa2e7 JK |
5293 | } |
5294 | ||
5295 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5296 | elements of all the CUs and return true. Otherwise, return false. */ | |
5297 | ||
5298 | static bool | |
ed2dc618 | 5299 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5300 | { |
22ca247e TT |
5301 | std::unique_ptr<mapped_debug_names> map |
5302 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5303 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5304 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5305 | |
5306 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5307 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5308 | *map)) |
927aa2e7 JK |
5309 | return false; |
5310 | ||
5311 | /* Don't use the index if it's empty. */ | |
22ca247e | 5312 | if (map->name_count == 0) |
927aa2e7 JK |
5313 | return false; |
5314 | ||
5315 | /* If there is a .dwz file, read it so we can get its CU list as | |
5316 | well. */ | |
ed2dc618 | 5317 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5318 | if (dwz != NULL) |
5319 | { | |
5320 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5321 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5322 | &dwz->debug_names, dwz_map)) |
5323 | { | |
5324 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5325 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5326 | return false; |
5327 | } | |
5328 | } | |
5329 | ||
22ca247e | 5330 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5331 | |
22ca247e | 5332 | if (map->tu_count != 0) |
927aa2e7 JK |
5333 | { |
5334 | /* We can only handle a single .debug_types when we have an | |
5335 | index. */ | |
fd5866f6 | 5336 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5337 | return false; |
5338 | ||
fd5866f6 | 5339 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5340 | |
5341 | create_signatured_type_table_from_debug_names | |
22ca247e | 5342 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5343 | } |
5344 | ||
ed2dc618 SM |
5345 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5346 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5347 | |
22ca247e | 5348 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5349 | dwarf2_per_objfile->using_index = 1; |
5350 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5351 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5352 | |
5353 | return true; | |
5354 | } | |
5355 | ||
927aa2e7 JK |
5356 | /* Type used to manage iterating over all CUs looking for a symbol for |
5357 | .debug_names. */ | |
5358 | ||
5359 | class dw2_debug_names_iterator | |
5360 | { | |
5361 | public: | |
927aa2e7 | 5362 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5363 | gdb::optional<block_enum> block_index, |
5364 | domain_enum domain, | |
927aa2e7 | 5365 | const char *name) |
2b79f376 | 5366 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5367 | m_addr (find_vec_in_debug_names (map, name)) |
5368 | {} | |
5369 | ||
5370 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5371 | search_domain search, uint32_t namei) | |
5372 | : m_map (map), | |
5373 | m_search (search), | |
5374 | m_addr (find_vec_in_debug_names (map, namei)) | |
5375 | {} | |
5376 | ||
3b00ef10 TT |
5377 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5378 | block_enum block_index, domain_enum domain, | |
5379 | uint32_t namei) | |
5380 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5381 | m_addr (find_vec_in_debug_names (map, namei)) | |
5382 | {} | |
5383 | ||
927aa2e7 JK |
5384 | /* Return the next matching CU or NULL if there are no more. */ |
5385 | dwarf2_per_cu_data *next (); | |
5386 | ||
5387 | private: | |
5388 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5389 | const char *name); | |
5390 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5391 | uint32_t namei); | |
5392 | ||
5393 | /* The internalized form of .debug_names. */ | |
5394 | const mapped_debug_names &m_map; | |
5395 | ||
2b79f376 SM |
5396 | /* If set, only look for symbols that match that block. Valid values are |
5397 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5398 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5399 | |
5400 | /* The kind of symbol we're looking for. */ | |
5401 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5402 | const search_domain m_search = ALL_DOMAIN; | |
5403 | ||
5404 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5405 | not found. */ | |
5406 | const gdb_byte *m_addr; | |
5407 | }; | |
5408 | ||
5409 | const char * | |
5410 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5411 | { | |
5412 | const ULONGEST namei_string_offs | |
5413 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5414 | + namei * offset_size), | |
5415 | offset_size, | |
5416 | dwarf5_byte_order); | |
5417 | return read_indirect_string_at_offset | |
ed2dc618 | 5418 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5419 | } |
5420 | ||
5421 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5422 | found, return pointer to its pool data. If NAME cannot be found, | |
5423 | return NULL. */ | |
5424 | ||
5425 | const gdb_byte * | |
5426 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5427 | (const mapped_debug_names &map, const char *name) | |
5428 | { | |
5429 | int (*cmp) (const char *, const char *); | |
5430 | ||
54ee4252 | 5431 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5432 | if (current_language->la_language == language_cplus |
5433 | || current_language->la_language == language_fortran | |
5434 | || current_language->la_language == language_d) | |
5435 | { | |
5436 | /* NAME is already canonical. Drop any qualifiers as | |
5437 | .debug_names does not contain any. */ | |
5438 | ||
5439 | if (strchr (name, '(') != NULL) | |
5440 | { | |
54ee4252 | 5441 | without_params = cp_remove_params (name); |
927aa2e7 | 5442 | if (without_params != NULL) |
54ee4252 | 5443 | name = without_params.get (); |
927aa2e7 JK |
5444 | } |
5445 | } | |
5446 | ||
5447 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5448 | ||
5449 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5450 | uint32_t namei | |
5451 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5452 | (map.bucket_table_reordered | |
5453 | + (full_hash % map.bucket_count)), 4, | |
5454 | map.dwarf5_byte_order); | |
5455 | if (namei == 0) | |
5456 | return NULL; | |
5457 | --namei; | |
5458 | if (namei >= map.name_count) | |
5459 | { | |
b98664d3 | 5460 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5461 | "[in module %s]"), |
5462 | namei, map.name_count, | |
ed2dc618 | 5463 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5464 | return NULL; |
5465 | } | |
5466 | ||
5467 | for (;;) | |
5468 | { | |
5469 | const uint32_t namei_full_hash | |
5470 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5471 | (map.hash_table_reordered + namei), 4, | |
5472 | map.dwarf5_byte_order); | |
5473 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5474 | return NULL; | |
5475 | ||
5476 | if (full_hash == namei_full_hash) | |
5477 | { | |
5478 | const char *const namei_string = map.namei_to_name (namei); | |
5479 | ||
5480 | #if 0 /* An expensive sanity check. */ | |
5481 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5482 | { | |
b98664d3 | 5483 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5484 | "[in module %s]"), |
5485 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5486 | return NULL; | |
5487 | } | |
5488 | #endif | |
5489 | ||
5490 | if (cmp (namei_string, name) == 0) | |
5491 | { | |
5492 | const ULONGEST namei_entry_offs | |
5493 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5494 | + namei * map.offset_size), | |
5495 | map.offset_size, map.dwarf5_byte_order); | |
5496 | return map.entry_pool + namei_entry_offs; | |
5497 | } | |
5498 | } | |
5499 | ||
5500 | ++namei; | |
5501 | if (namei >= map.name_count) | |
5502 | return NULL; | |
5503 | } | |
5504 | } | |
5505 | ||
5506 | const gdb_byte * | |
5507 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5508 | (const mapped_debug_names &map, uint32_t namei) | |
5509 | { | |
5510 | if (namei >= map.name_count) | |
5511 | { | |
b98664d3 | 5512 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5513 | "[in module %s]"), |
5514 | namei, map.name_count, | |
ed2dc618 | 5515 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5516 | return NULL; |
5517 | } | |
5518 | ||
5519 | const ULONGEST namei_entry_offs | |
5520 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5521 | + namei * map.offset_size), | |
5522 | map.offset_size, map.dwarf5_byte_order); | |
5523 | return map.entry_pool + namei_entry_offs; | |
5524 | } | |
5525 | ||
5526 | /* See dw2_debug_names_iterator. */ | |
5527 | ||
5528 | dwarf2_per_cu_data * | |
5529 | dw2_debug_names_iterator::next () | |
5530 | { | |
5531 | if (m_addr == NULL) | |
5532 | return NULL; | |
5533 | ||
ed2dc618 SM |
5534 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5535 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5536 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5537 | |
5538 | again: | |
5539 | ||
5540 | unsigned int bytes_read; | |
5541 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5542 | m_addr += bytes_read; | |
5543 | if (abbrev == 0) | |
5544 | return NULL; | |
5545 | ||
5546 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5547 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5548 | { | |
b98664d3 | 5549 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5550 | "[in module %s]"), |
ed2dc618 | 5551 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5552 | return NULL; |
5553 | } | |
5554 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5555 | enum class symbol_linkage { |
5556 | unknown, | |
5557 | static_, | |
5558 | extern_, | |
23c13d42 | 5559 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5560 | dwarf2_per_cu_data *per_cu = NULL; |
5561 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5562 | { | |
5563 | ULONGEST ull; | |
5564 | switch (attr.form) | |
5565 | { | |
5566 | case DW_FORM_implicit_const: | |
5567 | ull = attr.implicit_const; | |
5568 | break; | |
5569 | case DW_FORM_flag_present: | |
5570 | ull = 1; | |
5571 | break; | |
5572 | case DW_FORM_udata: | |
5573 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5574 | m_addr += bytes_read; | |
5575 | break; | |
5576 | default: | |
b98664d3 | 5577 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5578 | dwarf_form_name (attr.form), |
ed2dc618 | 5579 | objfile_name (objfile)); |
927aa2e7 JK |
5580 | return NULL; |
5581 | } | |
5582 | switch (attr.dw_idx) | |
5583 | { | |
5584 | case DW_IDX_compile_unit: | |
5585 | /* Don't crash on bad data. */ | |
b76e467d | 5586 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5587 | { |
b98664d3 | 5588 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5589 | " [in module %s]"), |
5590 | pulongest (ull), | |
5591 | objfile_name (dwarf2_per_objfile->objfile)); | |
5592 | continue; | |
5593 | } | |
ff4c9fec | 5594 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5595 | break; |
8af5c486 JK |
5596 | case DW_IDX_type_unit: |
5597 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5598 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5599 | { |
b98664d3 | 5600 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5601 | " [in module %s]"), |
5602 | pulongest (ull), | |
5603 | objfile_name (dwarf2_per_objfile->objfile)); | |
5604 | continue; | |
5605 | } | |
ff4c9fec | 5606 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5607 | break; |
927aa2e7 JK |
5608 | case DW_IDX_GNU_internal: |
5609 | if (!m_map.augmentation_is_gdb) | |
5610 | break; | |
23c13d42 | 5611 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5612 | break; |
5613 | case DW_IDX_GNU_external: | |
5614 | if (!m_map.augmentation_is_gdb) | |
5615 | break; | |
23c13d42 | 5616 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5617 | break; |
5618 | } | |
5619 | } | |
5620 | ||
5621 | /* Skip if already read in. */ | |
5622 | if (per_cu->v.quick->compunit_symtab) | |
5623 | goto again; | |
5624 | ||
5625 | /* Check static vs global. */ | |
23c13d42 | 5626 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5627 | { |
2b79f376 | 5628 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5629 | const bool symbol_is_static = |
5630 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5631 | if (want_static != symbol_is_static) |
2b79f376 | 5632 | goto again; |
927aa2e7 JK |
5633 | } |
5634 | ||
5635 | /* Match dw2_symtab_iter_next, symbol_kind | |
5636 | and debug_names::psymbol_tag. */ | |
5637 | switch (m_domain) | |
5638 | { | |
5639 | case VAR_DOMAIN: | |
5640 | switch (indexval.dwarf_tag) | |
5641 | { | |
5642 | case DW_TAG_variable: | |
5643 | case DW_TAG_subprogram: | |
5644 | /* Some types are also in VAR_DOMAIN. */ | |
5645 | case DW_TAG_typedef: | |
5646 | case DW_TAG_structure_type: | |
5647 | break; | |
5648 | default: | |
5649 | goto again; | |
5650 | } | |
5651 | break; | |
5652 | case STRUCT_DOMAIN: | |
5653 | switch (indexval.dwarf_tag) | |
5654 | { | |
5655 | case DW_TAG_typedef: | |
5656 | case DW_TAG_structure_type: | |
5657 | break; | |
5658 | default: | |
5659 | goto again; | |
5660 | } | |
5661 | break; | |
5662 | case LABEL_DOMAIN: | |
5663 | switch (indexval.dwarf_tag) | |
5664 | { | |
5665 | case 0: | |
5666 | case DW_TAG_variable: | |
5667 | break; | |
5668 | default: | |
5669 | goto again; | |
5670 | } | |
5671 | break; | |
59c35742 AB |
5672 | case MODULE_DOMAIN: |
5673 | switch (indexval.dwarf_tag) | |
5674 | { | |
5675 | case DW_TAG_module: | |
5676 | break; | |
5677 | default: | |
5678 | goto again; | |
5679 | } | |
5680 | break; | |
927aa2e7 JK |
5681 | default: |
5682 | break; | |
5683 | } | |
5684 | ||
5685 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5686 | debug_names::psymbol_tag. */ | |
5687 | switch (m_search) | |
4b514bc8 | 5688 | { |
927aa2e7 JK |
5689 | case VARIABLES_DOMAIN: |
5690 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5691 | { |
927aa2e7 JK |
5692 | case DW_TAG_variable: |
5693 | break; | |
5694 | default: | |
5695 | goto again; | |
4b514bc8 | 5696 | } |
927aa2e7 JK |
5697 | break; |
5698 | case FUNCTIONS_DOMAIN: | |
5699 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5700 | { |
927aa2e7 JK |
5701 | case DW_TAG_subprogram: |
5702 | break; | |
5703 | default: | |
5704 | goto again; | |
4b514bc8 | 5705 | } |
927aa2e7 JK |
5706 | break; |
5707 | case TYPES_DOMAIN: | |
5708 | switch (indexval.dwarf_tag) | |
5709 | { | |
5710 | case DW_TAG_typedef: | |
5711 | case DW_TAG_structure_type: | |
5712 | break; | |
5713 | default: | |
5714 | goto again; | |
5715 | } | |
5716 | break; | |
59c35742 AB |
5717 | case MODULES_DOMAIN: |
5718 | switch (indexval.dwarf_tag) | |
5719 | { | |
5720 | case DW_TAG_module: | |
5721 | break; | |
5722 | default: | |
5723 | goto again; | |
5724 | } | |
927aa2e7 JK |
5725 | default: |
5726 | break; | |
4b514bc8 | 5727 | } |
927aa2e7 JK |
5728 | |
5729 | return per_cu; | |
4b514bc8 | 5730 | } |
61920122 | 5731 | |
927aa2e7 | 5732 | static struct compunit_symtab * |
c7f839cb | 5733 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5734 | const char *name, domain_enum domain) |
4b514bc8 | 5735 | { |
ed2dc618 SM |
5736 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5737 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5738 | |
927aa2e7 JK |
5739 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5740 | if (!mapp) | |
61920122 | 5741 | { |
927aa2e7 JK |
5742 | /* index is NULL if OBJF_READNOW. */ |
5743 | return NULL; | |
5744 | } | |
5745 | const auto &map = *mapp; | |
9291a0cd | 5746 | |
2b79f376 | 5747 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5748 | |
927aa2e7 JK |
5749 | struct compunit_symtab *stab_best = NULL; |
5750 | struct dwarf2_per_cu_data *per_cu; | |
5751 | while ((per_cu = iter.next ()) != NULL) | |
5752 | { | |
5753 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5754 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5755 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5756 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5757 | |
927aa2e7 JK |
5758 | sym = block_find_symbol (block, name, domain, |
5759 | block_find_non_opaque_type_preferred, | |
5760 | &with_opaque); | |
9703b513 | 5761 | |
927aa2e7 JK |
5762 | /* Some caution must be observed with overloaded functions and |
5763 | methods, since the index will not contain any overload | |
5764 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5765 | |
927aa2e7 | 5766 | if (sym != NULL |
987012b8 | 5767 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5768 | return stab; |
5769 | if (with_opaque != NULL | |
987012b8 | 5770 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5771 | stab_best = stab; |
9703b513 | 5772 | |
927aa2e7 | 5773 | /* Keep looking through other CUs. */ |
9703b513 TT |
5774 | } |
5775 | ||
927aa2e7 | 5776 | return stab_best; |
9703b513 TT |
5777 | } |
5778 | ||
927aa2e7 JK |
5779 | /* This dumps minimal information about .debug_names. It is called |
5780 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5781 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5782 | |
927aa2e7 JK |
5783 | static void |
5784 | dw2_debug_names_dump (struct objfile *objfile) | |
5785 | { | |
ed2dc618 SM |
5786 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5787 | = get_dwarf2_per_objfile (objfile); | |
5788 | ||
927aa2e7 JK |
5789 | gdb_assert (dwarf2_per_objfile->using_index); |
5790 | printf_filtered (".debug_names:"); | |
5791 | if (dwarf2_per_objfile->debug_names_table) | |
5792 | printf_filtered (" exists\n"); | |
5793 | else | |
5794 | printf_filtered (" faked for \"readnow\"\n"); | |
5795 | printf_filtered ("\n"); | |
9291a0cd TT |
5796 | } |
5797 | ||
9291a0cd | 5798 | static void |
927aa2e7 JK |
5799 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5800 | const char *func_name) | |
9291a0cd | 5801 | { |
ed2dc618 SM |
5802 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5803 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5804 | |
927aa2e7 JK |
5805 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5806 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5807 | { |
927aa2e7 | 5808 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5809 | |
2b79f376 | 5810 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5811 | |
927aa2e7 JK |
5812 | struct dwarf2_per_cu_data *per_cu; |
5813 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5814 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5815 | } |
5816 | } | |
24c79950 | 5817 | |
3b00ef10 TT |
5818 | static void |
5819 | dw2_debug_names_map_matching_symbols | |
5820 | (struct objfile *objfile, | |
5821 | const lookup_name_info &name, domain_enum domain, | |
5822 | int global, | |
5823 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5824 | symbol_compare_ftype *ordered_compare) | |
5825 | { | |
5826 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5827 | = get_dwarf2_per_objfile (objfile); | |
5828 | ||
5829 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5830 | if (!dwarf2_per_objfile->debug_names_table) | |
5831 | return; | |
5832 | ||
5833 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5834 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5835 | ||
5836 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5837 | auto matcher = [&] (const char *symname) | |
5838 | { | |
5839 | if (ordered_compare == nullptr) | |
5840 | return true; | |
5841 | return ordered_compare (symname, match_name) == 0; | |
5842 | }; | |
5843 | ||
5844 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5845 | [&] (offset_type namei) | |
5846 | { | |
5847 | /* The name was matched, now expand corresponding CUs that were | |
5848 | marked. */ | |
5849 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5850 | ||
5851 | struct dwarf2_per_cu_data *per_cu; | |
5852 | while ((per_cu = iter.next ()) != NULL) | |
5853 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5854 | return true; | |
5855 | }); | |
5856 | ||
5857 | /* It's a shame we couldn't do this inside the | |
5858 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5859 | that have already been expanded. Instead, this loop matches what | |
5860 | the psymtab code does. */ | |
5861 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5862 | { | |
5863 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5864 | if (cust != nullptr) | |
5865 | { | |
5866 | const struct block *block | |
5867 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5868 | if (!iterate_over_symbols_terminated (block, name, | |
5869 | domain, callback)) | |
5870 | break; | |
5871 | } | |
5872 | } | |
5873 | } | |
5874 | ||
927aa2e7 JK |
5875 | static void |
5876 | dw2_debug_names_expand_symtabs_matching | |
5877 | (struct objfile *objfile, | |
5878 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5879 | const lookup_name_info &lookup_name, | |
5880 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5881 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5882 | enum search_domain kind) | |
5883 | { | |
ed2dc618 SM |
5884 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5885 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5886 | |
927aa2e7 JK |
5887 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5888 | if (!dwarf2_per_objfile->debug_names_table) | |
5889 | return; | |
9291a0cd | 5890 | |
ed2dc618 | 5891 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5892 | |
44ed8f3e | 5893 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5894 | |
44ed8f3e PA |
5895 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
5896 | symbol_matcher, | |
5897 | kind, [&] (offset_type namei) | |
927aa2e7 | 5898 | { |
927aa2e7 JK |
5899 | /* The name was matched, now expand corresponding CUs that were |
5900 | marked. */ | |
5901 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5902 | |
927aa2e7 JK |
5903 | struct dwarf2_per_cu_data *per_cu; |
5904 | while ((per_cu = iter.next ()) != NULL) | |
5905 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5906 | expansion_notify); | |
3b00ef10 | 5907 | return true; |
44ed8f3e | 5908 | }); |
9291a0cd TT |
5909 | } |
5910 | ||
927aa2e7 | 5911 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5912 | { |
5913 | dw2_has_symbols, | |
5914 | dw2_find_last_source_symtab, | |
5915 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5916 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5917 | dw2_debug_names_lookup_symbol, |
9291a0cd | 5918 | dw2_print_stats, |
927aa2e7 | 5919 | dw2_debug_names_dump, |
927aa2e7 | 5920 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5921 | dw2_expand_all_symtabs, |
652a8996 | 5922 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5923 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5924 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5925 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5926 | NULL, |
9291a0cd TT |
5927 | dw2_map_symbol_filenames |
5928 | }; | |
5929 | ||
4485a1c1 SM |
5930 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5931 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5932 | ||
5933 | template <typename T> | |
5934 | static gdb::array_view<const gdb_byte> | |
5935 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5936 | { | |
5937 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5938 | ||
96b79293 | 5939 | if (section->empty ()) |
4485a1c1 SM |
5940 | return {}; |
5941 | ||
5942 | /* Older elfutils strip versions could keep the section in the main | |
5943 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5944 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5945 | return {}; |
5946 | ||
96b79293 | 5947 | section->read (obj); |
4485a1c1 | 5948 | |
8bebfcda PA |
5949 | /* dwarf2_section_info::size is a bfd_size_type, while |
5950 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5951 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5952 | is 32-bit. So we need an explicit narrowing conversion here. | |
5953 | This is fine, because it's impossible to allocate or mmap an | |
5954 | array/buffer larger than what size_t can represent. */ | |
5955 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5956 | } |
5957 | ||
87d6a7aa SM |
5958 | /* Lookup the index cache for the contents of the index associated to |
5959 | DWARF2_OBJ. */ | |
5960 | ||
5961 | static gdb::array_view<const gdb_byte> | |
5962 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5963 | { | |
5964 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5965 | if (build_id == nullptr) | |
5966 | return {}; | |
5967 | ||
5968 | return global_index_cache.lookup_gdb_index (build_id, | |
5969 | &dwarf2_obj->index_cache_res); | |
5970 | } | |
5971 | ||
5972 | /* Same as the above, but for DWZ. */ | |
5973 | ||
5974 | static gdb::array_view<const gdb_byte> | |
5975 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5976 | { | |
5977 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5978 | if (build_id == nullptr) | |
5979 | return {}; | |
5980 | ||
5981 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5982 | } | |
5983 | ||
3c0aa29a | 5984 | /* See symfile.h. */ |
9291a0cd | 5985 | |
3c0aa29a PA |
5986 | bool |
5987 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5988 | { |
ed2dc618 SM |
5989 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5990 | = get_dwarf2_per_objfile (objfile); | |
5991 | ||
9291a0cd TT |
5992 | /* If we're about to read full symbols, don't bother with the |
5993 | indices. In this case we also don't care if some other debug | |
5994 | format is making psymtabs, because they are all about to be | |
5995 | expanded anyway. */ | |
5996 | if ((objfile->flags & OBJF_READNOW)) | |
5997 | { | |
9291a0cd | 5998 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5999 | create_all_comp_units (dwarf2_per_objfile); |
6000 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6001 | dwarf2_per_objfile->quick_file_names_table |
6002 | = create_quick_file_names_table | |
6003 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6004 | |
b76e467d | 6005 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6006 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6007 | { |
ff4c9fec | 6008 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6009 | |
e254ef6a DE |
6010 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6011 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6012 | } |
6013 | ||
6014 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6015 | these functions will be no-ops because we will have expanded | |
6016 | all symtabs. */ | |
3c0aa29a PA |
6017 | *index_kind = dw_index_kind::GDB_INDEX; |
6018 | return true; | |
9291a0cd TT |
6019 | } |
6020 | ||
ed2dc618 | 6021 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6022 | { |
6023 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6024 | return true; | |
6025 | } | |
927aa2e7 | 6026 | |
4485a1c1 SM |
6027 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6028 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6029 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6030 | { |
6031 | *index_kind = dw_index_kind::GDB_INDEX; | |
6032 | return true; | |
6033 | } | |
9291a0cd | 6034 | |
87d6a7aa SM |
6035 | /* ... otherwise, try to find the index in the index cache. */ |
6036 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6037 | get_gdb_index_contents_from_cache, | |
6038 | get_gdb_index_contents_from_cache_dwz)) | |
6039 | { | |
6040 | global_index_cache.hit (); | |
6041 | *index_kind = dw_index_kind::GDB_INDEX; | |
6042 | return true; | |
6043 | } | |
6044 | ||
6045 | global_index_cache.miss (); | |
3c0aa29a | 6046 | return false; |
9291a0cd TT |
6047 | } |
6048 | ||
6049 | \f | |
6050 | ||
dce234bc PP |
6051 | /* Build a partial symbol table. */ |
6052 | ||
6053 | void | |
f29dff0a | 6054 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6055 | { |
ed2dc618 SM |
6056 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6057 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6058 | |
6eee24ce | 6059 | init_psymbol_list (objfile, 1024); |
c906108c | 6060 | |
a70b8144 | 6061 | try |
c9bf0622 TT |
6062 | { |
6063 | /* This isn't really ideal: all the data we allocate on the | |
6064 | objfile's obstack is still uselessly kept around. However, | |
6065 | freeing it seems unsafe. */ | |
906768f9 | 6066 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6067 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6068 | psymtabs.keep (); |
87d6a7aa SM |
6069 | |
6070 | /* (maybe) store an index in the cache. */ | |
6071 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6072 | } |
230d2906 | 6073 | catch (const gdb_exception_error &except) |
492d29ea PA |
6074 | { |
6075 | exception_print (gdb_stderr, except); | |
6076 | } | |
c906108c | 6077 | } |
c906108c | 6078 | |
1ce1cefd DE |
6079 | /* Return the total length of the CU described by HEADER. */ |
6080 | ||
6081 | static unsigned int | |
6082 | get_cu_length (const struct comp_unit_head *header) | |
6083 | { | |
6084 | return header->initial_length_size + header->length; | |
6085 | } | |
6086 | ||
9c541725 | 6087 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6088 | |
9c541725 PA |
6089 | static inline bool |
6090 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6091 | { |
9c541725 PA |
6092 | sect_offset bottom = cu_header->sect_off; |
6093 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6094 | |
9c541725 | 6095 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6096 | } |
6097 | ||
3b80fe9b DE |
6098 | /* Find the base address of the compilation unit for range lists and |
6099 | location lists. It will normally be specified by DW_AT_low_pc. | |
6100 | In DWARF-3 draft 4, the base address could be overridden by | |
6101 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6102 | compilation units with discontinuous ranges. */ | |
6103 | ||
6104 | static void | |
6105 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6106 | { | |
6107 | struct attribute *attr; | |
6108 | ||
6109 | cu->base_known = 0; | |
6110 | cu->base_address = 0; | |
6111 | ||
6112 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6113 | if (attr != nullptr) |
3b80fe9b | 6114 | { |
cd6c91b4 | 6115 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6116 | cu->base_known = 1; |
6117 | } | |
6118 | else | |
6119 | { | |
6120 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6121 | if (attr != nullptr) |
3b80fe9b | 6122 | { |
cd6c91b4 | 6123 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6124 | cu->base_known = 1; |
6125 | } | |
6126 | } | |
6127 | } | |
6128 | ||
93311388 | 6129 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6130 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6131 | NOTE: This leaves members offset, first_die_offset to be filled in |
6132 | by the caller. */ | |
107d2387 | 6133 | |
d521ce57 | 6134 | static const gdb_byte * |
107d2387 | 6135 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6136 | const gdb_byte *info_ptr, |
6137 | struct dwarf2_section_info *section, | |
6138 | rcuh_kind section_kind) | |
107d2387 AC |
6139 | { |
6140 | int signed_addr; | |
891d2f0b | 6141 | unsigned int bytes_read; |
96b79293 TT |
6142 | const char *filename = section->get_file_name (); |
6143 | bfd *abfd = section->get_bfd_owner (); | |
c764a876 DE |
6144 | |
6145 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6146 | cu_header->initial_length_size = bytes_read; | |
6147 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6148 | info_ptr += bytes_read; |
107d2387 | 6149 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6150 | if (cu_header->version < 2 || cu_header->version > 5) |
6151 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6152 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6153 | cu_header->version, filename); | |
107d2387 | 6154 | info_ptr += 2; |
43988095 JK |
6155 | if (cu_header->version < 5) |
6156 | switch (section_kind) | |
6157 | { | |
6158 | case rcuh_kind::COMPILE: | |
6159 | cu_header->unit_type = DW_UT_compile; | |
6160 | break; | |
6161 | case rcuh_kind::TYPE: | |
6162 | cu_header->unit_type = DW_UT_type; | |
6163 | break; | |
6164 | default: | |
6165 | internal_error (__FILE__, __LINE__, | |
6166 | _("read_comp_unit_head: invalid section_kind")); | |
6167 | } | |
6168 | else | |
6169 | { | |
6170 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6171 | (read_1_byte (abfd, info_ptr)); | |
6172 | info_ptr += 1; | |
6173 | switch (cu_header->unit_type) | |
6174 | { | |
6175 | case DW_UT_compile: | |
a084a2a6 AT |
6176 | case DW_UT_partial: |
6177 | case DW_UT_skeleton: | |
6178 | case DW_UT_split_compile: | |
43988095 JK |
6179 | if (section_kind != rcuh_kind::COMPILE) |
6180 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6181 | "(is %s, should be %s) [in module %s]"), |
6182 | dwarf_unit_type_name (cu_header->unit_type), | |
6183 | dwarf_unit_type_name (DW_UT_type), filename); | |
43988095 JK |
6184 | break; |
6185 | case DW_UT_type: | |
a084a2a6 | 6186 | case DW_UT_split_type: |
43988095 JK |
6187 | section_kind = rcuh_kind::TYPE; |
6188 | break; | |
6189 | default: | |
6190 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6191 | "(is %#04x, should be one of: %s, %s, %s, %s or %s) " |
6192 | "[in module %s]"), cu_header->unit_type, | |
6193 | dwarf_unit_type_name (DW_UT_compile), | |
6194 | dwarf_unit_type_name (DW_UT_skeleton), | |
6195 | dwarf_unit_type_name (DW_UT_split_compile), | |
6196 | dwarf_unit_type_name (DW_UT_type), | |
6197 | dwarf_unit_type_name (DW_UT_split_type), filename); | |
43988095 JK |
6198 | } |
6199 | ||
6200 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6201 | info_ptr += 1; | |
6202 | } | |
9c541725 PA |
6203 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6204 | cu_header, | |
6205 | &bytes_read); | |
613e1657 | 6206 | info_ptr += bytes_read; |
43988095 JK |
6207 | if (cu_header->version < 5) |
6208 | { | |
6209 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6210 | info_ptr += 1; | |
6211 | } | |
107d2387 AC |
6212 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6213 | if (signed_addr < 0) | |
8e65ff28 | 6214 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6215 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6216 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6217 | |
a084a2a6 AT |
6218 | bool header_has_signature = section_kind == rcuh_kind::TYPE |
6219 | || cu_header->unit_type == DW_UT_skeleton | |
6220 | || cu_header->unit_type == DW_UT_split_compile; | |
43988095 | 6221 | |
a084a2a6 AT |
6222 | if (header_has_signature) |
6223 | { | |
43988095 JK |
6224 | cu_header->signature = read_8_bytes (abfd, info_ptr); |
6225 | info_ptr += 8; | |
a084a2a6 | 6226 | } |
43988095 | 6227 | |
a084a2a6 AT |
6228 | if (section_kind == rcuh_kind::TYPE) |
6229 | { | |
6230 | LONGEST type_offset; | |
43988095 JK |
6231 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); |
6232 | info_ptr += bytes_read; | |
9c541725 PA |
6233 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6234 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6235 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6236 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6237 | filename); | |
6238 | } | |
6239 | ||
107d2387 AC |
6240 | return info_ptr; |
6241 | } | |
6242 | ||
36586728 TT |
6243 | /* Helper function that returns the proper abbrev section for |
6244 | THIS_CU. */ | |
6245 | ||
6246 | static struct dwarf2_section_info * | |
6247 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6248 | { | |
6249 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6250 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6251 | |
6252 | if (this_cu->is_dwz) | |
ed2dc618 | 6253 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6254 | else |
6255 | abbrev = &dwarf2_per_objfile->abbrev; | |
6256 | ||
6257 | return abbrev; | |
6258 | } | |
6259 | ||
9ff913ba DE |
6260 | /* Subroutine of read_and_check_comp_unit_head and |
6261 | read_and_check_type_unit_head to simplify them. | |
6262 | Perform various error checking on the header. */ | |
6263 | ||
6264 | static void | |
ed2dc618 SM |
6265 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6266 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6267 | struct dwarf2_section_info *section, |
6268 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6269 | { |
96b79293 | 6270 | const char *filename = section->get_file_name (); |
9ff913ba | 6271 | |
9c541725 | 6272 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6273 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6274 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6275 | "(offset %s + 6) [in module %s]"), | |
6276 | sect_offset_str (header->abbrev_sect_off), | |
6277 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6278 | filename); |
6279 | ||
9c541725 | 6280 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6281 | avoid potential 32-bit overflow. */ |
9c541725 | 6282 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6283 | > section->size) |
9c541725 | 6284 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6285 | "(offset %s + 0) [in module %s]"), |
6286 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6287 | filename); |
6288 | } | |
6289 | ||
6290 | /* Read in a CU/TU header and perform some basic error checking. | |
6291 | The contents of the header are stored in HEADER. | |
6292 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6293 | |
d521ce57 | 6294 | static const gdb_byte * |
ed2dc618 SM |
6295 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6296 | struct comp_unit_head *header, | |
9ff913ba | 6297 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6298 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6299 | const gdb_byte *info_ptr, |
43988095 | 6300 | rcuh_kind section_kind) |
72bf9492 | 6301 | { |
d521ce57 | 6302 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6303 | |
9c541725 | 6304 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6305 | |
43988095 | 6306 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6307 | |
9c541725 | 6308 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6309 | |
ed2dc618 SM |
6310 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6311 | abbrev_section); | |
9ff913ba DE |
6312 | |
6313 | return info_ptr; | |
348e048f DE |
6314 | } |
6315 | ||
f4dc4d17 DE |
6316 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6317 | ||
6318 | static sect_offset | |
ed2dc618 SM |
6319 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6320 | struct dwarf2_section_info *section, | |
9c541725 | 6321 | sect_offset sect_off) |
f4dc4d17 | 6322 | { |
96b79293 | 6323 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6324 | const gdb_byte *info_ptr; |
ac298888 | 6325 | unsigned int initial_length_size, offset_size; |
43988095 | 6326 | uint16_t version; |
f4dc4d17 | 6327 | |
96b79293 | 6328 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 6329 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6330 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6331 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6332 | info_ptr += initial_length_size; |
6333 | ||
6334 | version = read_2_bytes (abfd, info_ptr); | |
6335 | info_ptr += 2; | |
6336 | if (version >= 5) | |
6337 | { | |
6338 | /* Skip unit type and address size. */ | |
6339 | info_ptr += 2; | |
6340 | } | |
6341 | ||
9c541725 | 6342 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6343 | } |
6344 | ||
aaa75496 JB |
6345 | /* Allocate a new partial symtab for file named NAME and mark this new |
6346 | partial symtab as being an include of PST. */ | |
6347 | ||
6348 | static void | |
891813be | 6349 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6350 | struct objfile *objfile) |
6351 | { | |
891813be | 6352 | dwarf2_psymtab *subpst = new dwarf2_psymtab (name, objfile); |
aaa75496 | 6353 | |
fbd9ab74 JK |
6354 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6355 | { | |
6356 | /* It shares objfile->objfile_obstack. */ | |
6357 | subpst->dirname = pst->dirname; | |
6358 | } | |
6359 | ||
a9342b62 | 6360 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6361 | subpst->dependencies[0] = pst; |
6362 | subpst->number_of_dependencies = 1; | |
6363 | ||
aaa75496 JB |
6364 | /* No private part is necessary for include psymtabs. This property |
6365 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6366 | the regular ones. */ |
891813be | 6367 | subpst->per_cu_data = nullptr; |
aaa75496 JB |
6368 | } |
6369 | ||
6370 | /* Read the Line Number Program data and extract the list of files | |
6371 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6372 | partial symtab for each of these included files. */ |
aaa75496 JB |
6373 | |
6374 | static void | |
6375 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6376 | struct die_info *die, |
891813be | 6377 | dwarf2_psymtab *pst) |
aaa75496 | 6378 | { |
fff8551c | 6379 | line_header_up lh; |
d85a05f0 | 6380 | struct attribute *attr; |
aaa75496 | 6381 | |
d85a05f0 | 6382 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6383 | if (attr != nullptr) |
9c541725 | 6384 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6385 | if (lh == NULL) |
6386 | return; /* No linetable, so no includes. */ | |
6387 | ||
79748972 TT |
6388 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6389 | that we pass in the raw text_low here; that is ok because we're | |
6390 | only decoding the line table to make include partial symtabs, and | |
6391 | so the addresses aren't really used. */ | |
4ae976d1 | 6392 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6393 | pst->raw_text_low (), 1); |
aaa75496 JB |
6394 | } |
6395 | ||
348e048f | 6396 | static hashval_t |
52dc124a | 6397 | hash_signatured_type (const void *item) |
348e048f | 6398 | { |
9a3c8263 SM |
6399 | const struct signatured_type *sig_type |
6400 | = (const struct signatured_type *) item; | |
9a619af0 | 6401 | |
348e048f | 6402 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6403 | return sig_type->signature; |
348e048f DE |
6404 | } |
6405 | ||
6406 | static int | |
52dc124a | 6407 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6408 | { |
9a3c8263 SM |
6409 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6410 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6411 | |
348e048f DE |
6412 | return lhs->signature == rhs->signature; |
6413 | } | |
6414 | ||
1fd400ff TT |
6415 | /* Allocate a hash table for signatured types. */ |
6416 | ||
6417 | static htab_t | |
673bfd45 | 6418 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6419 | { |
6420 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6421 | hash_signatured_type, |
6422 | eq_signatured_type, | |
1fd400ff TT |
6423 | NULL, |
6424 | &objfile->objfile_obstack, | |
6425 | hashtab_obstack_allocate, | |
6426 | dummy_obstack_deallocate); | |
6427 | } | |
6428 | ||
d467dd73 | 6429 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6430 | |
6431 | static int | |
d467dd73 | 6432 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6433 | { |
9a3c8263 | 6434 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6435 | std::vector<signatured_type *> *all_type_units |
6436 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6437 | |
b2bdb8cf | 6438 | all_type_units->push_back (sigt); |
1fd400ff TT |
6439 | |
6440 | return 1; | |
6441 | } | |
6442 | ||
78d4d2c5 | 6443 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6444 | and fill them into TYPES_HTAB. It will process only type units, |
6445 | therefore DW_UT_type. */ | |
c88ee1f0 | 6446 | |
78d4d2c5 | 6447 | static void |
ed2dc618 SM |
6448 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6449 | struct dwo_file *dwo_file, | |
43988095 JK |
6450 | dwarf2_section_info *section, htab_t &types_htab, |
6451 | rcuh_kind section_kind) | |
348e048f | 6452 | { |
3019eac3 | 6453 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6454 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6455 | bfd *abfd; |
6456 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6457 | |
4bdcc0c1 DE |
6458 | abbrev_section = (dwo_file != NULL |
6459 | ? &dwo_file->sections.abbrev | |
6460 | : &dwarf2_per_objfile->abbrev); | |
6461 | ||
b4f54984 | 6462 | if (dwarf_read_debug) |
43988095 | 6463 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6464 | section->get_name (), |
6465 | abbrev_section->get_file_name ()); | |
09406207 | 6466 | |
96b79293 | 6467 | section->read (objfile); |
78d4d2c5 | 6468 | info_ptr = section->buffer; |
348e048f | 6469 | |
78d4d2c5 JK |
6470 | if (info_ptr == NULL) |
6471 | return; | |
348e048f | 6472 | |
78d4d2c5 JK |
6473 | /* We can't set abfd until now because the section may be empty or |
6474 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6475 | abfd = section->get_bfd_owner (); |
348e048f | 6476 | |
c0ab21c2 TT |
6477 | /* We don't use cutu_reader here because we don't need to read |
6478 | any dies: the signature is in the header. */ | |
3019eac3 | 6479 | |
78d4d2c5 JK |
6480 | end_ptr = info_ptr + section->size; |
6481 | while (info_ptr < end_ptr) | |
6482 | { | |
78d4d2c5 JK |
6483 | struct signatured_type *sig_type; |
6484 | struct dwo_unit *dwo_tu; | |
6485 | void **slot; | |
6486 | const gdb_byte *ptr = info_ptr; | |
6487 | struct comp_unit_head header; | |
6488 | unsigned int length; | |
8b70b953 | 6489 | |
9c541725 | 6490 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6491 | |
a49dd8dd JK |
6492 | /* Initialize it due to a false compiler warning. */ |
6493 | header.signature = -1; | |
9c541725 | 6494 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6495 | |
78d4d2c5 JK |
6496 | /* We need to read the type's signature in order to build the hash |
6497 | table, but we don't need anything else just yet. */ | |
348e048f | 6498 | |
ed2dc618 | 6499 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6500 | abbrev_section, ptr, section_kind); |
348e048f | 6501 | |
78d4d2c5 | 6502 | length = get_cu_length (&header); |
6caca83c | 6503 | |
78d4d2c5 JK |
6504 | /* Skip dummy type units. */ |
6505 | if (ptr >= info_ptr + length | |
43988095 JK |
6506 | || peek_abbrev_code (abfd, ptr) == 0 |
6507 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6508 | { |
6509 | info_ptr += length; | |
6510 | continue; | |
6511 | } | |
dee91e82 | 6512 | |
78d4d2c5 JK |
6513 | if (types_htab == NULL) |
6514 | { | |
6515 | if (dwo_file) | |
6516 | types_htab = allocate_dwo_unit_table (objfile); | |
6517 | else | |
6518 | types_htab = allocate_signatured_type_table (objfile); | |
6519 | } | |
8b70b953 | 6520 | |
78d4d2c5 JK |
6521 | if (dwo_file) |
6522 | { | |
6523 | sig_type = NULL; | |
6524 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6525 | struct dwo_unit); | |
6526 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6527 | dwo_tu->signature = header.signature; |
9c541725 | 6528 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6529 | dwo_tu->section = section; |
9c541725 | 6530 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6531 | dwo_tu->length = length; |
6532 | } | |
6533 | else | |
6534 | { | |
6535 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6536 | The real type_offset is in the DWO file. */ | |
6537 | dwo_tu = NULL; | |
6538 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6539 | struct signatured_type); | |
43988095 | 6540 | sig_type->signature = header.signature; |
9c541725 | 6541 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6542 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6543 | sig_type->per_cu.is_debug_types = 1; |
6544 | sig_type->per_cu.section = section; | |
9c541725 | 6545 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6546 | sig_type->per_cu.length = length; |
6547 | } | |
6548 | ||
6549 | slot = htab_find_slot (types_htab, | |
6550 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6551 | INSERT); | |
6552 | gdb_assert (slot != NULL); | |
6553 | if (*slot != NULL) | |
6554 | { | |
9c541725 | 6555 | sect_offset dup_sect_off; |
0349ea22 | 6556 | |
3019eac3 DE |
6557 | if (dwo_file) |
6558 | { | |
78d4d2c5 JK |
6559 | const struct dwo_unit *dup_tu |
6560 | = (const struct dwo_unit *) *slot; | |
6561 | ||
9c541725 | 6562 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6563 | } |
6564 | else | |
6565 | { | |
78d4d2c5 JK |
6566 | const struct signatured_type *dup_tu |
6567 | = (const struct signatured_type *) *slot; | |
6568 | ||
9c541725 | 6569 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6570 | } |
8b70b953 | 6571 | |
b98664d3 | 6572 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6573 | " the entry at offset %s, signature %s"), |
6574 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6575 | hex_string (header.signature)); |
78d4d2c5 JK |
6576 | } |
6577 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6578 | |
78d4d2c5 | 6579 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6580 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6581 | sect_offset_str (sect_off), | |
43988095 | 6582 | hex_string (header.signature)); |
3019eac3 | 6583 | |
78d4d2c5 JK |
6584 | info_ptr += length; |
6585 | } | |
6586 | } | |
3019eac3 | 6587 | |
78d4d2c5 JK |
6588 | /* Create the hash table of all entries in the .debug_types |
6589 | (or .debug_types.dwo) section(s). | |
6590 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6591 | otherwise it is NULL. | |
b3c8eb43 | 6592 | |
78d4d2c5 | 6593 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6594 | |
78d4d2c5 | 6595 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6596 | |
78d4d2c5 | 6597 | static void |
ed2dc618 SM |
6598 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6599 | struct dwo_file *dwo_file, | |
fd5866f6 | 6600 | gdb::array_view<dwarf2_section_info> type_sections, |
78d4d2c5 JK |
6601 | htab_t &types_htab) |
6602 | { | |
fd5866f6 SM |
6603 | for (dwarf2_section_info §ion : type_sections) |
6604 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6605 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6606 | } |
6607 | ||
6608 | /* Create the hash table of all entries in the .debug_types section, | |
6609 | and initialize all_type_units. | |
6610 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6611 | otherwise non-zero. */ | |
6612 | ||
6613 | static int | |
ed2dc618 | 6614 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6615 | { |
78d4d2c5 | 6616 | htab_t types_htab = NULL; |
3019eac3 | 6617 | |
ed2dc618 SM |
6618 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6619 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6620 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6621 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6622 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6623 | if (types_htab == NULL) |
6624 | { | |
6625 | dwarf2_per_objfile->signatured_types = NULL; | |
6626 | return 0; | |
6627 | } | |
6628 | ||
348e048f DE |
6629 | dwarf2_per_objfile->signatured_types = types_htab; |
6630 | ||
b2bdb8cf SM |
6631 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6632 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6633 | ||
6634 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6635 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6636 | |
348e048f DE |
6637 | return 1; |
6638 | } | |
6639 | ||
6aa5f3a6 DE |
6640 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6641 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6642 | Otherwise we find one. */ | |
6643 | ||
6644 | static struct signatured_type * | |
ed2dc618 SM |
6645 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6646 | void **slot) | |
6aa5f3a6 DE |
6647 | { |
6648 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6649 | |
b2bdb8cf SM |
6650 | if (dwarf2_per_objfile->all_type_units.size () |
6651 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6652 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6653 | |
b2bdb8cf SM |
6654 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6655 | struct signatured_type); | |
6656 | ||
6657 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6658 | sig_type->signature = sig; |
6659 | sig_type->per_cu.is_debug_types = 1; | |
6660 | if (dwarf2_per_objfile->using_index) | |
6661 | { | |
6662 | sig_type->per_cu.v.quick = | |
6663 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6664 | struct dwarf2_per_cu_quick_data); | |
6665 | } | |
6666 | ||
6667 | if (slot == NULL) | |
6668 | { | |
6669 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6670 | sig_type, INSERT); | |
6671 | } | |
6672 | gdb_assert (*slot == NULL); | |
6673 | *slot = sig_type; | |
6674 | /* The rest of sig_type must be filled in by the caller. */ | |
6675 | return sig_type; | |
6676 | } | |
6677 | ||
a2ce51a0 DE |
6678 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6679 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6680 | ||
6681 | static void | |
ed2dc618 | 6682 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6683 | struct signatured_type *sig_entry, |
6684 | struct dwo_unit *dwo_entry) | |
6685 | { | |
7ee85ab1 | 6686 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6687 | gdb_assert (! sig_entry->per_cu.queued); |
6688 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6689 | if (dwarf2_per_objfile->using_index) |
6690 | { | |
6691 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6692 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6693 | } |
6694 | else | |
6695 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6696 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6697 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6698 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6699 | gdb_assert (sig_entry->dwo_unit == NULL); |
6700 | ||
6701 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6702 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6703 | sig_entry->per_cu.length = dwo_entry->length; |
6704 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6705 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6706 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6707 | sig_entry->dwo_unit = dwo_entry; | |
6708 | } | |
6709 | ||
6710 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6711 | If we haven't read the TU yet, create the signatured_type data structure |
6712 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6713 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6714 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6715 | containing that CU. Otherwise we could end up reading several other DWO | |
6716 | files (due to comdat folding) to process the transitive closure of all the | |
6717 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6718 | type signature that it needs. | |
a2ce51a0 DE |
6719 | We only do this for .gdb_index because in the psymtab case we already have |
6720 | to read all the DWOs to build the type unit groups. */ | |
6721 | ||
6722 | static struct signatured_type * | |
6723 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6724 | { | |
518817b3 SM |
6725 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6726 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6727 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6728 | struct dwo_file *dwo_file; | |
6729 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6730 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6731 | void **slot; |
a2ce51a0 DE |
6732 | |
6733 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6734 | ||
6aa5f3a6 DE |
6735 | /* If TU skeletons have been removed then we may not have read in any |
6736 | TUs yet. */ | |
6737 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6738 | { | |
6739 | dwarf2_per_objfile->signatured_types | |
6740 | = allocate_signatured_type_table (objfile); | |
6741 | } | |
a2ce51a0 DE |
6742 | |
6743 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6744 | Use the global signatured_types array to do our own comdat-folding |
6745 | of types. If this is the first time we're reading this TU, and | |
6746 | the TU has an entry in .gdb_index, replace the recorded data from | |
6747 | .gdb_index with this TU. */ | |
a2ce51a0 | 6748 | |
a2ce51a0 | 6749 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6750 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6751 | &find_sig_entry, INSERT); | |
9a3c8263 | 6752 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6753 | |
6754 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6755 | read. Don't reassign the global entry to point to this DWO if that's |
6756 | the case. Also note that if the TU is already being read, it may not | |
6757 | have come from a DWO, the program may be a mix of Fission-compiled | |
6758 | code and non-Fission-compiled code. */ | |
6759 | ||
6760 | /* Have we already tried to read this TU? | |
6761 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6762 | needn't exist in the global table yet). */ | |
6763 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6764 | return sig_entry; |
6765 | ||
6aa5f3a6 DE |
6766 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6767 | dwo_unit of the TU itself. */ | |
6768 | dwo_file = cu->dwo_unit->dwo_file; | |
6769 | ||
a2ce51a0 DE |
6770 | /* Ok, this is the first time we're reading this TU. */ |
6771 | if (dwo_file->tus == NULL) | |
6772 | return NULL; | |
6773 | find_dwo_entry.signature = sig; | |
9a3c8263 | 6774 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
6775 | if (dwo_entry == NULL) |
6776 | return NULL; | |
6777 | ||
6aa5f3a6 DE |
6778 | /* If the global table doesn't have an entry for this TU, add one. */ |
6779 | if (sig_entry == NULL) | |
ed2dc618 | 6780 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6781 | |
ed2dc618 | 6782 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6783 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6784 | return sig_entry; |
6785 | } | |
6786 | ||
a2ce51a0 DE |
6787 | /* Subroutine of lookup_signatured_type. |
6788 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6789 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6790 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6791 | |
6792 | static struct signatured_type * | |
6793 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6794 | { | |
518817b3 SM |
6795 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6796 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 6797 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 6798 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6799 | struct dwo_unit *dwo_entry; |
6800 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6801 | void **slot; |
a2ce51a0 DE |
6802 | |
6803 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6804 | gdb_assert (dwp_file != NULL); | |
6805 | ||
6aa5f3a6 DE |
6806 | /* If TU skeletons have been removed then we may not have read in any |
6807 | TUs yet. */ | |
6808 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 6809 | { |
6aa5f3a6 DE |
6810 | dwarf2_per_objfile->signatured_types |
6811 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
6812 | } |
6813 | ||
6aa5f3a6 DE |
6814 | find_sig_entry.signature = sig; |
6815 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6816 | &find_sig_entry, INSERT); | |
9a3c8263 | 6817 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6818 | |
6819 | /* Have we already tried to read this TU? | |
6820 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6821 | needn't exist in the global table yet). */ | |
6822 | if (sig_entry != NULL) | |
6823 | return sig_entry; | |
6824 | ||
a2ce51a0 DE |
6825 | if (dwp_file->tus == NULL) |
6826 | return NULL; | |
ed2dc618 | 6827 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6828 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6829 | if (dwo_entry == NULL) |
6830 | return NULL; | |
6831 | ||
ed2dc618 SM |
6832 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6833 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6834 | |
a2ce51a0 DE |
6835 | return sig_entry; |
6836 | } | |
6837 | ||
380bca97 | 6838 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6839 | Returns NULL if signature SIG is not present in the table. |
6840 | It is up to the caller to complain about this. */ | |
348e048f DE |
6841 | |
6842 | static struct signatured_type * | |
a2ce51a0 | 6843 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6844 | { |
518817b3 SM |
6845 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6846 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6847 | |
a2ce51a0 DE |
6848 | if (cu->dwo_unit |
6849 | && dwarf2_per_objfile->using_index) | |
6850 | { | |
6851 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6852 | These cases require special processing. */ | |
ed2dc618 | 6853 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6854 | return lookup_dwo_signatured_type (cu, sig); |
6855 | else | |
6856 | return lookup_dwp_signatured_type (cu, sig); | |
6857 | } | |
6858 | else | |
6859 | { | |
6860 | struct signatured_type find_entry, *entry; | |
348e048f | 6861 | |
a2ce51a0 DE |
6862 | if (dwarf2_per_objfile->signatured_types == NULL) |
6863 | return NULL; | |
6864 | find_entry.signature = sig; | |
9a3c8263 SM |
6865 | entry = ((struct signatured_type *) |
6866 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
6867 | return entry; |
6868 | } | |
348e048f | 6869 | } |
18a8505e AT |
6870 | |
6871 | /* Return the address base of the compile unit, which, if exists, is stored | |
6872 | either at the attribute DW_AT_GNU_addr_base, or DW_AT_addr_base. */ | |
6873 | static gdb::optional<ULONGEST> | |
6874 | lookup_addr_base (struct die_info *comp_unit_die) | |
6875 | { | |
6876 | struct attribute *attr; | |
6877 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_addr_base); | |
6878 | if (attr == nullptr) | |
6879 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_addr_base); | |
6880 | if (attr == nullptr) | |
6881 | return gdb::optional<ULONGEST> (); | |
6882 | return DW_UNSND (attr); | |
6883 | } | |
6884 | ||
6885 | /* Return range lists base of the compile unit, which, if exists, is stored | |
6886 | either at the attribute DW_AT_rnglists_base or DW_AT_GNU_ranges_base. */ | |
6887 | static ULONGEST | |
6888 | lookup_ranges_base (struct die_info *comp_unit_die) | |
6889 | { | |
6890 | struct attribute *attr; | |
6891 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_rnglists_base); | |
6892 | if (attr == nullptr) | |
6893 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_ranges_base); | |
6894 | if (attr == nullptr) | |
6895 | return 0; | |
6896 | return DW_UNSND (attr); | |
6897 | } | |
6898 | ||
42e7ad6c | 6899 | /* Low level DIE reading support. */ |
348e048f | 6900 | |
d85a05f0 DJ |
6901 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6902 | ||
6903 | static void | |
6904 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6905 | struct dwarf2_cu *cu, |
3019eac3 | 6906 | struct dwarf2_section_info *section, |
685af9cd TT |
6907 | struct dwo_file *dwo_file, |
6908 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6909 | { |
fceca515 | 6910 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6911 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6912 | reader->cu = cu; |
3019eac3 | 6913 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6914 | reader->die_section = section; |
6915 | reader->buffer = section->buffer; | |
f664829e | 6916 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 6917 | reader->comp_dir = NULL; |
685af9cd | 6918 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6919 | } |
6920 | ||
c0ab21c2 | 6921 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6922 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6923 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6924 | already. |
6925 | ||
6926 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6927 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6928 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6929 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6930 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6931 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
6932 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
6933 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
6934 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6935 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6936 | kept around for at least as long as *RESULT_READER. | |
6937 | ||
b0c7bfa9 DE |
6938 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6939 | ||
6940 | static int | |
6941 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6942 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6943 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6944 | const char *stub_comp_dir, |
b0c7bfa9 | 6945 | struct die_reader_specs *result_reader, |
d521ce57 | 6946 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6947 | struct die_info **result_comp_unit_die, |
685af9cd TT |
6948 | int *result_has_children, |
6949 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 6950 | { |
ed2dc618 | 6951 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6952 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6953 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6954 | bfd *abfd; |
d521ce57 | 6955 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6956 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6957 | int i,num_extra_attrs; | |
6958 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6959 | struct die_info *comp_unit_die; |
6960 | ||
b0aeadb3 DE |
6961 | /* At most one of these may be provided. */ |
6962 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6963 | |
b0c7bfa9 DE |
6964 | /* These attributes aren't processed until later: |
6965 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6966 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6967 | referenced later. However, these attributes are found in the stub | |
6968 | which we won't have later. In order to not impose this complication | |
6969 | on the rest of the code, we read them here and copy them to the | |
6970 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6971 | |
6972 | stmt_list = NULL; | |
6973 | low_pc = NULL; | |
6974 | high_pc = NULL; | |
6975 | ranges = NULL; | |
6976 | comp_dir = NULL; | |
6977 | ||
6978 | if (stub_comp_unit_die != NULL) | |
6979 | { | |
6980 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6981 | DWO file. */ | |
6982 | if (! this_cu->is_debug_types) | |
6983 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6984 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6985 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6986 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6987 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6988 | ||
18a8505e | 6989 | cu->addr_base = lookup_addr_base (stub_comp_unit_die); |
b0c7bfa9 | 6990 | |
18a8505e AT |
6991 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6992 | here (if needed). We need the value before we can process | |
6993 | DW_AT_ranges. */ | |
6994 | cu->ranges_base = lookup_ranges_base (stub_comp_unit_die); | |
b0c7bfa9 | 6995 | } |
a2ce51a0 DE |
6996 | else if (stub_comp_dir != NULL) |
6997 | { | |
6998 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6999 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7000 | comp_dir->name = DW_AT_comp_dir; |
7001 | comp_dir->form = DW_FORM_string; | |
7002 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7003 | DW_STRING (comp_dir) = stub_comp_dir; | |
7004 | } | |
b0c7bfa9 DE |
7005 | |
7006 | /* Set up for reading the DWO CU/TU. */ | |
7007 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7008 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
7009 | section->read (objfile); |
7010 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
7011 | begin_info_ptr = info_ptr = (section->buffer |
7012 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7013 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7014 | |
7015 | if (this_cu->is_debug_types) | |
7016 | { | |
b0c7bfa9 DE |
7017 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7018 | ||
ed2dc618 SM |
7019 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7020 | &cu->header, section, | |
b0c7bfa9 | 7021 | dwo_abbrev_section, |
43988095 | 7022 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7023 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7024 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7025 | { |
7026 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7027 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7028 | hex_string (sig_type->signature), |
43988095 | 7029 | hex_string (cu->header.signature), |
9d8780f0 | 7030 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7031 | bfd_get_filename (abfd)); |
7032 | } | |
9c541725 | 7033 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7034 | /* For DWOs coming from DWP files, we don't know the CU length |
7035 | nor the type's offset in the TU until now. */ | |
7036 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7037 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7038 | |
7039 | /* Establish the type offset that can be used to lookup the type. | |
7040 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7041 | sig_type->type_offset_in_section |
7042 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7043 | } |
7044 | else | |
7045 | { | |
ed2dc618 SM |
7046 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7047 | &cu->header, section, | |
b0c7bfa9 | 7048 | dwo_abbrev_section, |
43988095 | 7049 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7050 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7051 | /* For DWOs coming from DWP files, we don't know the CU length |
7052 | until now. */ | |
7053 | dwo_unit->length = get_cu_length (&cu->header); | |
7054 | } | |
7055 | ||
685af9cd | 7056 | *result_dwo_abbrev_table |
3054dd54 | 7057 | = abbrev_table_read_table (objfile, dwo_abbrev_section, |
685af9cd TT |
7058 | cu->header.abbrev_sect_off); |
7059 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7060 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7061 | |
7062 | /* Read in the die, but leave space to copy over the attributes | |
7063 | from the stub. This has the benefit of simplifying the rest of | |
7064 | the code - all the work to maintain the illusion of a single | |
7065 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7066 | num_extra_attrs = ((stmt_list != NULL) | |
7067 | + (low_pc != NULL) | |
7068 | + (high_pc != NULL) | |
7069 | + (ranges != NULL) | |
7070 | + (comp_dir != NULL)); | |
7071 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7072 | result_has_children, num_extra_attrs); | |
7073 | ||
7074 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7075 | comp_unit_die = *result_comp_unit_die; | |
7076 | i = comp_unit_die->num_attrs; | |
7077 | if (stmt_list != NULL) | |
7078 | comp_unit_die->attrs[i++] = *stmt_list; | |
7079 | if (low_pc != NULL) | |
7080 | comp_unit_die->attrs[i++] = *low_pc; | |
7081 | if (high_pc != NULL) | |
7082 | comp_unit_die->attrs[i++] = *high_pc; | |
7083 | if (ranges != NULL) | |
7084 | comp_unit_die->attrs[i++] = *ranges; | |
7085 | if (comp_dir != NULL) | |
7086 | comp_unit_die->attrs[i++] = *comp_dir; | |
7087 | comp_unit_die->num_attrs += num_extra_attrs; | |
7088 | ||
b4f54984 | 7089 | if (dwarf_die_debug) |
bf6af496 DE |
7090 | { |
7091 | fprintf_unfiltered (gdb_stdlog, | |
7092 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 7093 | section->get_name (), |
bf6af496 DE |
7094 | (unsigned) (begin_info_ptr - section->buffer), |
7095 | bfd_get_filename (abfd)); | |
b4f54984 | 7096 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7097 | } |
7098 | ||
a2ce51a0 DE |
7099 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7100 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7101 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7102 | to get it via circuitous means. Blech. */ | |
7103 | if (comp_dir != NULL) | |
7104 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7105 | ||
b0c7bfa9 DE |
7106 | /* Skip dummy compilation units. */ |
7107 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7108 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7109 | return 0; | |
7110 | ||
7111 | *result_info_ptr = info_ptr; | |
7112 | return 1; | |
7113 | } | |
7114 | ||
a084a2a6 AT |
7115 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7116 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7117 | signature is part of the header. */ | |
7118 | static gdb::optional<ULONGEST> | |
7119 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7120 | { | |
7121 | if (cu->header.version >= 5) | |
7122 | return cu->header.signature; | |
7123 | struct attribute *attr; | |
7124 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7125 | if (attr == nullptr) | |
7126 | return gdb::optional<ULONGEST> (); | |
7127 | return DW_UNSND (attr); | |
7128 | } | |
7129 | ||
c0ab21c2 | 7130 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7131 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7132 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7133 | |
7134 | static struct dwo_unit * | |
7135 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
7136 | struct die_info *comp_unit_die, |
7137 | const char *dwo_name) | |
b0c7bfa9 DE |
7138 | { |
7139 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7140 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7141 | const char *comp_dir; |
b0c7bfa9 | 7142 | |
a2ce51a0 DE |
7143 | gdb_assert (cu != NULL); |
7144 | ||
b0c7bfa9 | 7145 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7146 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7147 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
7148 | |
7149 | if (this_cu->is_debug_types) | |
7150 | { | |
7151 | struct signatured_type *sig_type; | |
7152 | ||
7153 | /* Since this_cu is the first member of struct signatured_type, | |
7154 | we can go from a pointer to one to a pointer to the other. */ | |
7155 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
7156 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
7157 | } | |
7158 | else | |
7159 | { | |
a084a2a6 AT |
7160 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
7161 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
7162 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7163 | " [in module %s]"), | |
e3b94546 | 7164 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 7165 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 7166 | *signature); |
b0c7bfa9 DE |
7167 | } |
7168 | ||
b0c7bfa9 DE |
7169 | return dwo_unit; |
7170 | } | |
7171 | ||
c0ab21c2 | 7172 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7173 | See it for a description of the parameters. |
fcd3b13d | 7174 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7175 | |
c0ab21c2 TT |
7176 | void |
7177 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
7178 | int use_existing_cu, int keep) | |
a2ce51a0 | 7179 | { |
a2ce51a0 | 7180 | struct signatured_type *sig_type; |
a2ce51a0 | 7181 | struct die_reader_specs reader; |
a2ce51a0 DE |
7182 | |
7183 | /* Verify we can do the following downcast, and that we have the | |
7184 | data we need. */ | |
7185 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7186 | sig_type = (struct signatured_type *) this_cu; | |
7187 | gdb_assert (sig_type->dwo_unit != NULL); | |
7188 | ||
6aa5f3a6 DE |
7189 | if (use_existing_cu && this_cu->cu != NULL) |
7190 | { | |
7191 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7192 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7193 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7194 | } |
7195 | else | |
7196 | { | |
7197 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7198 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 7199 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7200 | } |
7201 | ||
7202 | /* A future optimization, if needed, would be to use an existing | |
7203 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7204 | could share abbrev tables. */ | |
a2ce51a0 DE |
7205 | |
7206 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
7207 | NULL /* stub_comp_unit_die */, |
7208 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7209 | &reader, &info_ptr, | |
685af9cd | 7210 | &comp_unit_die, &has_children, |
c0ab21c2 | 7211 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7212 | { |
7213 | /* Dummy die. */ | |
c0ab21c2 | 7214 | dummy_p = true; |
a2ce51a0 | 7215 | } |
a2ce51a0 DE |
7216 | } |
7217 | ||
fd820528 | 7218 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7219 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7220 | |
f4dc4d17 DE |
7221 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7222 | Otherwise the table specified in the comp unit header is read in and used. | |
7223 | This is an optimization for when we already have the abbrev table. | |
7224 | ||
dee91e82 DE |
7225 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7226 | Otherwise, a new CU is allocated with xmalloc. | |
7227 | ||
7228 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
c0ab21c2 TT |
7229 | read_in_chain. Otherwise the dwarf2_cu data is freed at the |
7230 | end. */ | |
aaa75496 | 7231 | |
c0ab21c2 TT |
7232 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7233 | struct abbrev_table *abbrev_table, | |
7234 | int use_existing_cu, int keep, | |
7235 | bool skip_partial) | |
7236 | : die_reader_specs {}, | |
7237 | m_this_cu (this_cu), | |
7238 | m_keep (keep) | |
c906108c | 7239 | { |
ed2dc618 | 7240 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7241 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7242 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7243 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 7244 | struct dwarf2_cu *cu; |
c0ab21c2 | 7245 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7246 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7247 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7248 | /* Non-zero if CU currently points to a DWO file and we need to |
7249 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7250 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7251 | int rereading_dwo_cu = 0; |
c906108c | 7252 | |
b4f54984 | 7253 | if (dwarf_die_debug) |
9d8780f0 | 7254 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7255 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7256 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7257 | |
dee91e82 DE |
7258 | if (use_existing_cu) |
7259 | gdb_assert (keep); | |
23745b47 | 7260 | |
a2ce51a0 DE |
7261 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7262 | file (instead of going through the stub), short-circuit all of this. */ | |
7263 | if (this_cu->reading_dwo_directly) | |
7264 | { | |
7265 | /* Narrow down the scope of possibilities to have to understand. */ | |
7266 | gdb_assert (this_cu->is_debug_types); | |
7267 | gdb_assert (abbrev_table == NULL); | |
c0ab21c2 | 7268 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep); |
a2ce51a0 DE |
7269 | return; |
7270 | } | |
7271 | ||
dee91e82 | 7272 | /* This is cheap if the section is already read in. */ |
96b79293 | 7273 | section->read (objfile); |
dee91e82 | 7274 | |
9c541725 | 7275 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7276 | |
7277 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
7278 | |
7279 | if (use_existing_cu && this_cu->cu != NULL) | |
7280 | { | |
7281 | cu = this_cu->cu; | |
42e7ad6c DE |
7282 | /* If this CU is from a DWO file we need to start over, we need to |
7283 | refetch the attributes from the skeleton CU. | |
7284 | This could be optimized by retrieving those attributes from when we | |
7285 | were here the first time: the previous comp_unit_die was stored in | |
7286 | comp_unit_obstack. But there's no data yet that we need this | |
7287 | optimization. */ | |
7288 | if (cu->dwo_unit != NULL) | |
7289 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7290 | } |
7291 | else | |
7292 | { | |
7293 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7294 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
7295 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
7296 | cu = m_new_cu.get (); | |
42e7ad6c | 7297 | } |
dee91e82 | 7298 | |
b0c7bfa9 | 7299 | /* Get the header. */ |
9c541725 | 7300 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7301 | { |
7302 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7303 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7304 | } |
7305 | else | |
7306 | { | |
3019eac3 | 7307 | if (this_cu->is_debug_types) |
dee91e82 | 7308 | { |
ed2dc618 SM |
7309 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7310 | &cu->header, section, | |
4bdcc0c1 | 7311 | abbrev_section, info_ptr, |
43988095 | 7312 | rcuh_kind::TYPE); |
dee91e82 | 7313 | |
42e7ad6c DE |
7314 | /* Since per_cu is the first member of struct signatured_type, |
7315 | we can go from a pointer to one to a pointer to the other. */ | |
7316 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7317 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7318 | gdb_assert (sig_type->type_offset_in_tu |
7319 | == cu->header.type_cu_offset_in_tu); | |
7320 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7321 | |
42e7ad6c DE |
7322 | /* LENGTH has not been set yet for type units if we're |
7323 | using .gdb_index. */ | |
1ce1cefd | 7324 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7325 | |
7326 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7327 | sig_type->type_offset_in_section = |
7328 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7329 | |
7330 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7331 | } |
7332 | else | |
7333 | { | |
ed2dc618 SM |
7334 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7335 | &cu->header, section, | |
4bdcc0c1 | 7336 | abbrev_section, |
43988095 JK |
7337 | info_ptr, |
7338 | rcuh_kind::COMPILE); | |
dee91e82 | 7339 | |
9c541725 | 7340 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7341 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7342 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7343 | } |
7344 | } | |
10b3939b | 7345 | |
6caca83c | 7346 | /* Skip dummy compilation units. */ |
dee91e82 | 7347 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7348 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7349 | { |
7350 | dummy_p = true; | |
7351 | return; | |
7352 | } | |
6caca83c | 7353 | |
433df2d4 DE |
7354 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7355 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7356 | done. */ |
f4dc4d17 | 7357 | if (abbrev_table != NULL) |
685af9cd TT |
7358 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7359 | else | |
f4dc4d17 | 7360 | { |
c0ab21c2 | 7361 | m_abbrev_table_holder |
3054dd54 | 7362 | = abbrev_table_read_table (objfile, abbrev_section, |
685af9cd | 7363 | cu->header.abbrev_sect_off); |
c0ab21c2 | 7364 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7365 | } |
af703f96 | 7366 | |
dee91e82 | 7367 | /* Read the top level CU/TU die. */ |
c0ab21c2 TT |
7368 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
7369 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr, &has_children); | |
93311388 | 7370 | |
58f0c718 | 7371 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7372 | { |
7373 | dummy_p = true; | |
7374 | return; | |
7375 | } | |
58f0c718 | 7376 | |
b0c7bfa9 | 7377 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7378 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7379 | table from the DWO file and pass the ownership over to us. It will be | |
7380 | referenced from READER, so we must make sure to free it after we're done | |
7381 | with READER. | |
7382 | ||
b0c7bfa9 DE |
7383 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7384 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7385 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7386 | if (dwo_name != nullptr) |
3019eac3 | 7387 | { |
3019eac3 | 7388 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7389 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7390 | |
7391 | if (has_children) | |
6a506a2d | 7392 | { |
b98664d3 | 7393 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7394 | " has children (offset %s) [in module %s]"), |
7395 | sect_offset_str (this_cu->sect_off), | |
7396 | bfd_get_filename (abfd)); | |
6a506a2d | 7397 | } |
c0ab21c2 | 7398 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 7399 | if (dwo_unit != NULL) |
3019eac3 | 7400 | { |
6a506a2d | 7401 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7402 | comp_unit_die, NULL, |
c0ab21c2 | 7403 | this, &info_ptr, |
685af9cd | 7404 | &dwo_comp_unit_die, &has_children, |
c0ab21c2 | 7405 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7406 | { |
7407 | /* Dummy die. */ | |
c0ab21c2 | 7408 | dummy_p = true; |
6a506a2d DE |
7409 | return; |
7410 | } | |
7411 | comp_unit_die = dwo_comp_unit_die; | |
7412 | } | |
7413 | else | |
7414 | { | |
7415 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7416 | the stub. A complaint has already been logged. There's | |
7417 | not much more we can do except pass on the stub DIE to | |
7418 | die_reader_func. We don't want to throw an error on bad | |
7419 | debug info. */ | |
3019eac3 DE |
7420 | } |
7421 | } | |
c0ab21c2 | 7422 | } |
3019eac3 | 7423 | |
c0ab21c2 TT |
7424 | cutu_reader::~cutu_reader () |
7425 | { | |
b0c7bfa9 | 7426 | /* Done, clean up. */ |
c0ab21c2 | 7427 | if (m_new_cu != NULL && m_keep && !dummy_p) |
348e048f | 7428 | { |
c0ab21c2 TT |
7429 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7430 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 7431 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
7432 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
7433 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 7434 | /* The chain owns it now. */ |
c0ab21c2 | 7435 | m_new_cu.release (); |
348e048f | 7436 | } |
dee91e82 DE |
7437 | } |
7438 | ||
18a8505e AT |
7439 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7440 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7441 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7442 | |
7443 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7444 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7445 | |
7446 | We fill in THIS_CU->length. | |
7447 | ||
dee91e82 | 7448 | THIS_CU->cu is always freed when done. |
3019eac3 | 7449 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7450 | to care whether it refers to the "main" CU or the DWO CU. |
7451 | ||
7452 | When parent_cu is passed, it is used to provide a default value for | |
7453 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7454 | |
c0ab21c2 TT |
7455 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7456 | struct dwarf2_cu *parent_cu, | |
7457 | struct dwo_file *dwo_file) | |
7458 | : die_reader_specs {}, | |
7459 | m_this_cu (this_cu) | |
dee91e82 | 7460 | { |
ed2dc618 | 7461 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7462 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7463 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7464 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7465 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7466 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
7467 | int has_children; |
7468 | ||
b4f54984 | 7469 | if (dwarf_die_debug) |
9d8780f0 | 7470 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7471 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7472 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7473 | |
dee91e82 DE |
7474 | gdb_assert (this_cu->cu == NULL); |
7475 | ||
33e80786 DE |
7476 | abbrev_section = (dwo_file != NULL |
7477 | ? &dwo_file->sections.abbrev | |
7478 | : get_abbrev_section_for_cu (this_cu)); | |
7479 | ||
dee91e82 | 7480 | /* This is cheap if the section is already read in. */ |
96b79293 | 7481 | section->read (objfile); |
dee91e82 | 7482 | |
c0ab21c2 | 7483 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7484 | |
9c541725 | 7485 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7486 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7487 | &m_new_cu->header, section, |
4bdcc0c1 | 7488 | abbrev_section, info_ptr, |
43988095 JK |
7489 | (this_cu->is_debug_types |
7490 | ? rcuh_kind::TYPE | |
7491 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7492 | |
18a8505e AT |
7493 | if (parent_cu != nullptr) |
7494 | { | |
c0ab21c2 TT |
7495 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7496 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7497 | } |
c0ab21c2 | 7498 | this_cu->length = get_cu_length (&m_new_cu->header); |
dee91e82 DE |
7499 | |
7500 | /* Skip dummy compilation units. */ | |
7501 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7502 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7503 | { |
7504 | dummy_p = true; | |
7505 | return; | |
7506 | } | |
72bf9492 | 7507 | |
c0ab21c2 | 7508 | m_abbrev_table_holder |
3054dd54 | 7509 | = abbrev_table_read_table (objfile, abbrev_section, |
c0ab21c2 | 7510 | m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7511 | |
c0ab21c2 TT |
7512 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7513 | m_abbrev_table_holder.get ()); | |
7514 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr, &has_children); | |
dee91e82 DE |
7515 | } |
7516 | ||
0018ea6f DE |
7517 | \f |
7518 | /* Type Unit Groups. | |
dee91e82 | 7519 | |
0018ea6f DE |
7520 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7521 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7522 | so that all types coming from the same compilation (.o file) are grouped | |
7523 | together. A future step could be to put the types in the same symtab as | |
7524 | the CU the types ultimately came from. */ | |
ff013f42 | 7525 | |
f4dc4d17 DE |
7526 | static hashval_t |
7527 | hash_type_unit_group (const void *item) | |
7528 | { | |
9a3c8263 SM |
7529 | const struct type_unit_group *tu_group |
7530 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7531 | |
094b34ac | 7532 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7533 | } |
348e048f DE |
7534 | |
7535 | static int | |
f4dc4d17 | 7536 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7537 | { |
9a3c8263 SM |
7538 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7539 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7540 | |
094b34ac | 7541 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7542 | } |
348e048f | 7543 | |
f4dc4d17 DE |
7544 | /* Allocate a hash table for type unit groups. */ |
7545 | ||
7546 | static htab_t | |
ed2dc618 | 7547 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7548 | { |
7549 | return htab_create_alloc_ex (3, | |
7550 | hash_type_unit_group, | |
7551 | eq_type_unit_group, | |
7552 | NULL, | |
ed2dc618 | 7553 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7554 | hashtab_obstack_allocate, |
7555 | dummy_obstack_deallocate); | |
7556 | } | |
dee91e82 | 7557 | |
f4dc4d17 DE |
7558 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7559 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7560 | of any one psymtab grow too big. */ | |
7561 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7562 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7563 | |
094b34ac | 7564 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7565 | Create the type_unit_group object used to hold one or more TUs. */ |
7566 | ||
7567 | static struct type_unit_group * | |
094b34ac | 7568 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7569 | { |
518817b3 SM |
7570 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7571 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7572 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7573 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7574 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7575 | |
7576 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7577 | struct type_unit_group); | |
094b34ac | 7578 | per_cu = &tu_group->per_cu; |
518817b3 | 7579 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7580 | |
094b34ac DE |
7581 | if (dwarf2_per_objfile->using_index) |
7582 | { | |
7583 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7584 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7585 | } |
7586 | else | |
7587 | { | |
9c541725 | 7588 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7589 | dwarf2_psymtab *pst; |
528e1572 | 7590 | std::string name; |
094b34ac DE |
7591 | |
7592 | /* Give the symtab a useful name for debug purposes. */ | |
7593 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7594 | name = string_printf ("<type_units_%d>", |
7595 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7596 | else |
528e1572 | 7597 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7598 | |
528e1572 | 7599 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7600 | pst->anonymous = true; |
094b34ac | 7601 | } |
f4dc4d17 | 7602 | |
094b34ac | 7603 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7604 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7605 | |
7606 | return tu_group; | |
7607 | } | |
7608 | ||
094b34ac DE |
7609 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7610 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7611 | |
7612 | static struct type_unit_group * | |
ff39bb5e | 7613 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7614 | { |
518817b3 SM |
7615 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7616 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7617 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7618 | struct type_unit_group *tu_group; | |
7619 | void **slot; | |
7620 | unsigned int line_offset; | |
7621 | struct type_unit_group type_unit_group_for_lookup; | |
7622 | ||
7623 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7624 | { | |
7625 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7626 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7627 | } |
7628 | ||
7629 | /* Do we need to create a new group, or can we use an existing one? */ | |
7630 | ||
7631 | if (stmt_list) | |
7632 | { | |
7633 | line_offset = DW_UNSND (stmt_list); | |
7634 | ++tu_stats->nr_symtab_sharers; | |
7635 | } | |
7636 | else | |
7637 | { | |
7638 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7639 | We can do various things here like create one group per TU or | |
7640 | spread them over multiple groups to split up the expansion work. | |
7641 | To avoid worst case scenarios (too many groups or too large groups) | |
7642 | we, umm, group them in bunches. */ | |
7643 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7644 | | (tu_stats->nr_stmt_less_type_units | |
7645 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7646 | ++tu_stats->nr_stmt_less_type_units; | |
7647 | } | |
7648 | ||
094b34ac | 7649 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7650 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7651 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7652 | &type_unit_group_for_lookup, INSERT); | |
7653 | if (*slot != NULL) | |
7654 | { | |
9a3c8263 | 7655 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7656 | gdb_assert (tu_group != NULL); |
7657 | } | |
7658 | else | |
7659 | { | |
9c541725 | 7660 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7661 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7662 | *slot = tu_group; |
7663 | ++tu_stats->nr_symtabs; | |
7664 | } | |
7665 | ||
7666 | return tu_group; | |
7667 | } | |
0018ea6f DE |
7668 | \f |
7669 | /* Partial symbol tables. */ | |
7670 | ||
7671 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7672 | ||
7673 | The caller must fill in the following details: | |
7674 | dirname, textlow, texthigh. */ | |
7675 | ||
891813be | 7676 | static dwarf2_psymtab * |
0018ea6f DE |
7677 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7678 | { | |
e3b94546 | 7679 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7680 | dwarf2_psymtab *pst; |
0018ea6f | 7681 | |
891813be | 7682 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 7683 | |
6d94535f | 7684 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7685 | |
7686 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 7687 | pst->per_cu_data = per_cu; |
0018ea6f DE |
7688 | per_cu->v.psymtab = pst; |
7689 | ||
7690 | return pst; | |
7691 | } | |
7692 | ||
c0ab21c2 | 7693 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7694 | |
7695 | static void | |
7696 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7697 | const gdb_byte *info_ptr, |
0018ea6f DE |
7698 | struct die_info *comp_unit_die, |
7699 | int has_children, | |
c0ab21c2 TT |
7700 | int want_partial_unit, |
7701 | enum language pretend_language) | |
0018ea6f DE |
7702 | { |
7703 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7704 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7705 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7706 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7707 | CORE_ADDR baseaddr; |
7708 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7709 | dwarf2_psymtab *pst; |
3a2b436a | 7710 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7711 | const char *filename; |
0018ea6f | 7712 | |
c0ab21c2 | 7713 | if (comp_unit_die->tag == DW_TAG_partial_unit && !want_partial_unit) |
0018ea6f DE |
7714 | return; |
7715 | ||
7716 | gdb_assert (! per_cu->is_debug_types); | |
7717 | ||
c0ab21c2 | 7718 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7719 | |
0018ea6f | 7720 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
7721 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7722 | if (filename == NULL) | |
0018ea6f | 7723 | filename = ""; |
0018ea6f DE |
7724 | |
7725 | pst = create_partial_symtab (per_cu, filename); | |
7726 | ||
7727 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7728 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7729 | |
b3b3bada | 7730 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7731 | |
7732 | dwarf2_find_base_address (comp_unit_die, cu); | |
7733 | ||
7734 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7735 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7736 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7737 | &best_highpc, cu, pst); | |
7738 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7739 | { |
7740 | CORE_ADDR low | |
7741 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7742 | - baseaddr); | |
7743 | CORE_ADDR high | |
7744 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7745 | - baseaddr - 1); | |
7746 | /* Store the contiguous range if it is not empty; it can be | |
7747 | empty for CUs with no code. */ | |
d320c2b5 TT |
7748 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7749 | low, high, pst); | |
79748972 | 7750 | } |
0018ea6f DE |
7751 | |
7752 | /* Check if comp unit has_children. | |
7753 | If so, read the rest of the partial symbols from this comp unit. | |
7754 | If not, there's no more debug_info for this comp unit. */ | |
7755 | if (has_children) | |
7756 | { | |
7757 | struct partial_die_info *first_die; | |
7758 | CORE_ADDR lowpc, highpc; | |
7759 | ||
7760 | lowpc = ((CORE_ADDR) -1); | |
7761 | highpc = ((CORE_ADDR) 0); | |
7762 | ||
7763 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7764 | ||
7765 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7766 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7767 | |
7768 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7769 | complaints from `maint check'. */ | |
7770 | if (lowpc == ((CORE_ADDR) -1)) | |
7771 | lowpc = highpc; | |
7772 | ||
7773 | /* If the compilation unit didn't have an explicit address range, | |
7774 | then use the information extracted from its child dies. */ | |
e385593e | 7775 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7776 | { |
7777 | best_lowpc = lowpc; | |
7778 | best_highpc = highpc; | |
7779 | } | |
7780 | } | |
4ae976d1 | 7781 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7782 | best_lowpc + baseaddr) |
7783 | - baseaddr); | |
4ae976d1 | 7784 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7785 | best_highpc + baseaddr) |
7786 | - baseaddr); | |
0018ea6f | 7787 | |
8763cede | 7788 | end_psymtab_common (objfile, pst); |
0018ea6f | 7789 | |
ae640021 | 7790 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7791 | { |
7792 | int i; | |
ae640021 | 7793 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7794 | |
7795 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7796 | post-pass. */ | |
7797 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7798 | pst->dependencies |
7799 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7800 | for (i = 0; i < len; ++i) |
7801 | { | |
7802 | pst->dependencies[i] | |
7803 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7804 | } | |
0018ea6f | 7805 | |
ae640021 | 7806 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7807 | } |
7808 | ||
7809 | /* Get the list of files included in the current compilation unit, | |
7810 | and build a psymtab for each of them. */ | |
7811 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7812 | ||
b4f54984 | 7813 | if (dwarf_read_debug) |
b926417a TT |
7814 | fprintf_unfiltered (gdb_stdlog, |
7815 | "Psymtab for %s unit @%s: %s - %s" | |
7816 | ", %d global, %d static syms\n", | |
7817 | per_cu->is_debug_types ? "type" : "comp", | |
7818 | sect_offset_str (per_cu->sect_off), | |
7819 | paddress (gdbarch, pst->text_low (objfile)), | |
7820 | paddress (gdbarch, pst->text_high (objfile)), | |
7821 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7822 | } |
7823 | ||
7824 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7825 | Process compilation unit THIS_CU for a psymtab. */ | |
7826 | ||
7827 | static void | |
7828 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
7829 | int want_partial_unit, |
7830 | enum language pretend_language) | |
0018ea6f DE |
7831 | { |
7832 | /* If this compilation unit was already read in, free the | |
7833 | cached copy in order to read it in again. This is | |
7834 | necessary because we skipped some symbols when we first | |
7835 | read in the compilation unit (see load_partial_dies). | |
7836 | This problem could be avoided, but the benefit is unclear. */ | |
7837 | if (this_cu->cu != NULL) | |
7838 | free_one_cached_comp_unit (this_cu); | |
7839 | ||
c0ab21c2 TT |
7840 | cutu_reader reader (this_cu, NULL, 0, 0, false); |
7841 | ||
7842 | if (reader.dummy_p) | |
f1902523 | 7843 | { |
c0ab21c2 | 7844 | /* Nothing. */ |
f1902523 | 7845 | } |
c0ab21c2 TT |
7846 | else if (this_cu->is_debug_types) |
7847 | build_type_psymtabs_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
7848 | reader.has_children); | |
7849 | else | |
7850 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, | |
7851 | reader.comp_unit_die, | |
7852 | reader.has_children, | |
7853 | want_partial_unit, | |
7854 | pretend_language); | |
0018ea6f DE |
7855 | |
7856 | /* Age out any secondary CUs. */ | |
ed2dc618 | 7857 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7858 | } |
f4dc4d17 DE |
7859 | |
7860 | /* Reader function for build_type_psymtabs. */ | |
7861 | ||
7862 | static void | |
7863 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7864 | const gdb_byte *info_ptr, |
f4dc4d17 | 7865 | struct die_info *type_unit_die, |
c0ab21c2 | 7866 | int has_children) |
f4dc4d17 | 7867 | { |
ed2dc618 | 7868 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7869 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7870 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7871 | struct dwarf2_cu *cu = reader->cu; | |
7872 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7873 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7874 | struct type_unit_group *tu_group; |
7875 | struct attribute *attr; | |
7876 | struct partial_die_info *first_die; | |
7877 | CORE_ADDR lowpc, highpc; | |
891813be | 7878 | dwarf2_psymtab *pst; |
f4dc4d17 | 7879 | |
0186c6a7 DE |
7880 | gdb_assert (per_cu->is_debug_types); |
7881 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
7882 | |
7883 | if (! has_children) | |
7884 | return; | |
7885 | ||
7886 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 7887 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7888 | |
df07e2c7 | 7889 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7890 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7891 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7892 | |
7893 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7894 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7895 | pst->anonymous = true; |
f4dc4d17 DE |
7896 | |
7897 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7898 | ||
7899 | lowpc = (CORE_ADDR) -1; | |
7900 | highpc = (CORE_ADDR) 0; | |
7901 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7902 | ||
8763cede | 7903 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7904 | } |
7905 | ||
73051182 DE |
7906 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7907 | ||
7908 | struct tu_abbrev_offset | |
7909 | { | |
b2bdb8cf SM |
7910 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7911 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7912 | {} | |
7913 | ||
7914 | signatured_type *sig_type; | |
73051182 DE |
7915 | sect_offset abbrev_offset; |
7916 | }; | |
7917 | ||
484cf504 | 7918 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7919 | |
484cf504 TT |
7920 | static bool |
7921 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7922 | const struct tu_abbrev_offset &b) | |
73051182 | 7923 | { |
484cf504 | 7924 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7925 | } |
7926 | ||
7927 | /* Efficiently read all the type units. | |
7928 | This does the bulk of the work for build_type_psymtabs. | |
7929 | ||
7930 | The efficiency is because we sort TUs by the abbrev table they use and | |
7931 | only read each abbrev table once. In one program there are 200K TUs | |
7932 | sharing 8K abbrev tables. | |
7933 | ||
7934 | The main purpose of this function is to support building the | |
7935 | dwarf2_per_objfile->type_unit_groups table. | |
7936 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7937 | can collapse the search space by grouping them by stmt_list. | |
7938 | The savings can be significant, in the same program from above the 200K TUs | |
7939 | share 8K stmt_list tables. | |
7940 | ||
7941 | FUNC is expected to call get_type_unit_group, which will create the | |
7942 | struct type_unit_group if necessary and add it to | |
7943 | dwarf2_per_objfile->type_unit_groups. */ | |
7944 | ||
7945 | static void | |
ed2dc618 | 7946 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7947 | { |
73051182 | 7948 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7949 | abbrev_table_up abbrev_table; |
73051182 | 7950 | sect_offset abbrev_offset; |
73051182 DE |
7951 | |
7952 | /* It's up to the caller to not call us multiple times. */ | |
7953 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7954 | ||
b2bdb8cf | 7955 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7956 | return; |
7957 | ||
7958 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7959 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7960 | read each abbrev table in. | |
7961 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7962 | This is simpler and efficient enough for now. | |
7963 | ||
7964 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7965 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7966 | stmt_list value too so in practice this should work well. | |
7967 | ||
7968 | The basic algorithm here is: | |
7969 | ||
7970 | sort TUs by abbrev table | |
7971 | for each TU with same abbrev table: | |
7972 | read abbrev table if first user | |
7973 | read TU top level DIE | |
7974 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7975 | call FUNC */ | |
7976 | ||
b4f54984 | 7977 | if (dwarf_read_debug) |
73051182 DE |
7978 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7979 | ||
7980 | /* Sort in a separate table to maintain the order of all_type_units | |
7981 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7982 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7983 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7984 | ||
7985 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7986 | sorted_by_abbrev.emplace_back | |
7987 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7988 | sig_type->per_cu.section, | |
7989 | sig_type->per_cu.sect_off)); | |
73051182 | 7990 | |
484cf504 TT |
7991 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7992 | sort_tu_by_abbrev_offset); | |
73051182 | 7993 | |
9c541725 | 7994 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7995 | |
b2bdb8cf | 7996 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7997 | { |
73051182 DE |
7998 | /* Switch to the next abbrev table if necessary. */ |
7999 | if (abbrev_table == NULL | |
b2bdb8cf | 8000 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8001 | { |
b2bdb8cf | 8002 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8003 | abbrev_table = |
3054dd54 | 8004 | abbrev_table_read_table (dwarf2_per_objfile->objfile, |
ed2dc618 | 8005 | &dwarf2_per_objfile->abbrev, |
73051182 DE |
8006 | abbrev_offset); |
8007 | ++tu_stats->nr_uniq_abbrev_tables; | |
8008 | } | |
8009 | ||
c0ab21c2 TT |
8010 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
8011 | 0, 0, false); | |
8012 | if (!reader.dummy_p) | |
8013 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
8014 | reader.comp_unit_die, | |
8015 | reader.has_children); | |
73051182 | 8016 | } |
6aa5f3a6 | 8017 | } |
73051182 | 8018 | |
6aa5f3a6 DE |
8019 | /* Print collected type unit statistics. */ |
8020 | ||
8021 | static void | |
ed2dc618 | 8022 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8023 | { |
8024 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8025 | ||
8026 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8027 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8028 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8029 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8030 | tu_stats->nr_uniq_abbrev_tables); | |
8031 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8032 | tu_stats->nr_symtabs); | |
8033 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8034 | tu_stats->nr_symtab_sharers); | |
8035 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8036 | tu_stats->nr_stmt_less_type_units); | |
8037 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8038 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8039 | } |
8040 | ||
f4dc4d17 DE |
8041 | /* Traversal function for build_type_psymtabs. */ |
8042 | ||
8043 | static int | |
8044 | build_type_psymtab_dependencies (void **slot, void *info) | |
8045 | { | |
ed2dc618 SM |
8046 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8047 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8048 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8049 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8050 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8051 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8052 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8053 | int i; |
8054 | ||
8055 | gdb_assert (len > 0); | |
0186c6a7 | 8056 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8057 | |
8058 | pst->number_of_dependencies = len; | |
a9342b62 | 8059 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8060 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8061 | { |
df07e2c7 | 8062 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8063 | gdb_assert (iter->per_cu.is_debug_types); |
8064 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8065 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8066 | } |
8067 | ||
df07e2c7 AB |
8068 | delete tu_group->tus; |
8069 | tu_group->tus = nullptr; | |
348e048f DE |
8070 | |
8071 | return 1; | |
8072 | } | |
8073 | ||
8074 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8075 | Build partial symbol tables for the .debug_types comp-units. */ | |
8076 | ||
8077 | static void | |
ed2dc618 | 8078 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8079 | { |
ed2dc618 | 8080 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8081 | return; |
8082 | ||
ed2dc618 | 8083 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8084 | } |
f4dc4d17 | 8085 | |
6aa5f3a6 DE |
8086 | /* Traversal function for process_skeletonless_type_unit. |
8087 | Read a TU in a DWO file and build partial symbols for it. */ | |
8088 | ||
8089 | static int | |
8090 | process_skeletonless_type_unit (void **slot, void *info) | |
8091 | { | |
8092 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8093 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8094 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8095 | struct signatured_type find_entry, *entry; |
8096 | ||
8097 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8098 | ||
8099 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8100 | { | |
8101 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8102 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8103 | } |
8104 | ||
8105 | find_entry.signature = dwo_unit->signature; | |
8106 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8107 | INSERT); | |
8108 | /* If we've already seen this type there's nothing to do. What's happening | |
8109 | is we're doing our own version of comdat-folding here. */ | |
8110 | if (*slot != NULL) | |
8111 | return 1; | |
8112 | ||
8113 | /* This does the job that create_all_type_units would have done for | |
8114 | this TU. */ | |
ed2dc618 SM |
8115 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8116 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8117 | *slot = entry; |
8118 | ||
8119 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
c0ab21c2 TT |
8120 | cutu_reader reader (&entry->per_cu, NULL, 0, 0, false); |
8121 | if (!reader.dummy_p) | |
8122 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
8123 | reader.comp_unit_die, reader.has_children); | |
6aa5f3a6 DE |
8124 | |
8125 | return 1; | |
8126 | } | |
8127 | ||
8128 | /* Traversal function for process_skeletonless_type_units. */ | |
8129 | ||
8130 | static int | |
8131 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8132 | { | |
8133 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8134 | ||
8135 | if (dwo_file->tus != NULL) | |
8136 | { | |
8137 | htab_traverse_noresize (dwo_file->tus, | |
8138 | process_skeletonless_type_unit, info); | |
8139 | } | |
8140 | ||
8141 | return 1; | |
8142 | } | |
8143 | ||
8144 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8145 | This is needed in case a TU was emitted without its skeleton. | |
8146 | Note: This can't be done until we know what all the DWO files are. */ | |
8147 | ||
8148 | static void | |
ed2dc618 | 8149 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8150 | { |
8151 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8152 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8153 | && dwarf2_per_objfile->dwo_files != NULL) |
8154 | { | |
51ac9db5 | 8155 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 8156 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 8157 | dwarf2_per_objfile); |
6aa5f3a6 | 8158 | } |
348e048f DE |
8159 | } |
8160 | ||
ed2dc618 | 8161 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8162 | |
8163 | static void | |
ed2dc618 | 8164 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8165 | { |
b76e467d | 8166 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8167 | { |
891813be | 8168 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8169 | |
36586728 TT |
8170 | if (pst == NULL) |
8171 | continue; | |
8172 | ||
b76e467d | 8173 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8174 | { |
8175 | /* Set the 'user' field only if it is not already set. */ | |
8176 | if (pst->dependencies[j]->user == NULL) | |
8177 | pst->dependencies[j]->user = pst; | |
8178 | } | |
8179 | } | |
8180 | } | |
8181 | ||
93311388 DE |
8182 | /* Build the partial symbol table by doing a quick pass through the |
8183 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8184 | |
93311388 | 8185 | static void |
ed2dc618 | 8186 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8187 | { |
ed2dc618 | 8188 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8189 | |
b4f54984 | 8190 | if (dwarf_read_debug) |
45cfd468 DE |
8191 | { |
8192 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8193 | objfile_name (objfile)); |
45cfd468 DE |
8194 | } |
8195 | ||
98bfdba5 PA |
8196 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8197 | ||
96b79293 | 8198 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 8199 | |
93311388 DE |
8200 | /* Any cached compilation units will be linked by the per-objfile |
8201 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8202 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8203 | |
ed2dc618 | 8204 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8205 | |
ed2dc618 | 8206 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8207 | |
60606b2c TT |
8208 | /* Create a temporary address map on a temporary obstack. We later |
8209 | copy this to the final obstack. */ | |
8268c778 | 8210 | auto_obstack temp_obstack; |
791afaa2 TT |
8211 | |
8212 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8213 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8214 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8215 | |
b76e467d SM |
8216 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8217 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8218 | |
6aa5f3a6 | 8219 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8220 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8221 | |
8222 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8223 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8224 | { | |
8225 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8226 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8227 | } |
8228 | ||
b4f54984 | 8229 | if (dwarf_read_debug) |
ed2dc618 | 8230 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8231 | |
ed2dc618 | 8232 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8233 | |
d320c2b5 TT |
8234 | objfile->partial_symtabs->psymtabs_addrmap |
8235 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8236 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8237 | /* At this point we want to keep the address map. */ |
8238 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8239 | |
b4f54984 | 8240 | if (dwarf_read_debug) |
45cfd468 | 8241 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8242 | objfile_name (objfile)); |
ae038cb0 DJ |
8243 | } |
8244 | ||
dee91e82 DE |
8245 | /* Load the partial DIEs for a secondary CU into memory. |
8246 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8247 | |
dee91e82 DE |
8248 | static void |
8249 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8250 | { | |
c0ab21c2 TT |
8251 | cutu_reader reader (this_cu, NULL, 1, 1, false); |
8252 | ||
8253 | if (!reader.dummy_p) | |
8254 | { | |
8255 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8256 | language_minimal); | |
8257 | ||
8258 | /* Check if comp unit has_children. | |
8259 | If so, read the rest of the partial symbols from this comp unit. | |
8260 | If not, there's no more debug_info for this comp unit. */ | |
8261 | if (reader.has_children) | |
8262 | load_partial_dies (&reader, reader.info_ptr, 0); | |
8263 | } | |
ae038cb0 DJ |
8264 | } |
8265 | ||
ae038cb0 | 8266 | static void |
ed2dc618 | 8267 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8268 | struct dwarf2_section_info *section, |
f1902523 | 8269 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8270 | unsigned int is_dwz) |
ae038cb0 | 8271 | { |
d521ce57 | 8272 | const gdb_byte *info_ptr; |
ed2dc618 | 8273 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8274 | |
b4f54984 | 8275 | if (dwarf_read_debug) |
bf6af496 | 8276 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8277 | section->get_name (), |
8278 | section->get_file_name ()); | |
bf6af496 | 8279 | |
96b79293 | 8280 | section->read (objfile); |
ae038cb0 | 8281 | |
36586728 | 8282 | info_ptr = section->buffer; |
6e70227d | 8283 | |
36586728 | 8284 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8285 | { |
ae038cb0 | 8286 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8287 | |
9c541725 | 8288 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8289 | |
f1902523 | 8290 | comp_unit_head cu_header; |
ed2dc618 SM |
8291 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8292 | abbrev_section, info_ptr, | |
8293 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8294 | |
8295 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8296 | if (cu_header.unit_type != DW_UT_type) |
8297 | { | |
8298 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8299 | struct dwarf2_per_cu_data); | |
8300 | memset (this_cu, 0, sizeof (*this_cu)); | |
8301 | } | |
8302 | else | |
8303 | { | |
8304 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8305 | struct signatured_type); | |
8306 | memset (sig_type, 0, sizeof (*sig_type)); | |
8307 | sig_type->signature = cu_header.signature; | |
8308 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8309 | this_cu = &sig_type->per_cu; | |
8310 | } | |
8311 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8312 | this_cu->sect_off = sect_off; |
f1902523 | 8313 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8314 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8315 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8316 | this_cu->section = section; |
ae038cb0 | 8317 | |
b76e467d | 8318 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8319 | |
8320 | info_ptr = info_ptr + this_cu->length; | |
8321 | } | |
36586728 TT |
8322 | } |
8323 | ||
8324 | /* Create a list of all compilation units in OBJFILE. | |
8325 | This is only done for -readnow and building partial symtabs. */ | |
8326 | ||
8327 | static void | |
ed2dc618 | 8328 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8329 | { |
b76e467d | 8330 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8331 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8332 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8333 | |
b76e467d | 8334 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8335 | if (dwz != NULL) |
ed2dc618 | 8336 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8337 | 1); |
c906108c SS |
8338 | } |
8339 | ||
5734ee8b | 8340 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8341 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8342 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8343 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8344 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8345 | |
72bf9492 DJ |
8346 | static void |
8347 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8348 | CORE_ADDR *highpc, int set_addrmap, |
8349 | struct dwarf2_cu *cu) | |
c906108c | 8350 | { |
72bf9492 | 8351 | struct partial_die_info *pdi; |
c906108c | 8352 | |
91c24f0a DC |
8353 | /* Now, march along the PDI's, descending into ones which have |
8354 | interesting children but skipping the children of the other ones, | |
8355 | until we reach the end of the compilation unit. */ | |
c906108c | 8356 | |
72bf9492 | 8357 | pdi = first_die; |
91c24f0a | 8358 | |
72bf9492 DJ |
8359 | while (pdi != NULL) |
8360 | { | |
52356b79 | 8361 | pdi->fixup (cu); |
c906108c | 8362 | |
f55ee35c | 8363 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8364 | children, so we need to look at them. Ditto for anonymous |
8365 | enums. */ | |
933c6fe4 | 8366 | |
72bf9492 | 8367 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8368 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8369 | || pdi->tag == DW_TAG_imported_unit |
8370 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8371 | { |
72bf9492 | 8372 | switch (pdi->tag) |
c906108c SS |
8373 | { |
8374 | case DW_TAG_subprogram: | |
b1dc1806 | 8375 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8376 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8377 | break; |
72929c62 | 8378 | case DW_TAG_constant: |
c906108c SS |
8379 | case DW_TAG_variable: |
8380 | case DW_TAG_typedef: | |
91c24f0a | 8381 | case DW_TAG_union_type: |
72bf9492 | 8382 | if (!pdi->is_declaration) |
63d06c5c | 8383 | { |
72bf9492 | 8384 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8385 | } |
8386 | break; | |
c906108c | 8387 | case DW_TAG_class_type: |
680b30c7 | 8388 | case DW_TAG_interface_type: |
c906108c | 8389 | case DW_TAG_structure_type: |
72bf9492 | 8390 | if (!pdi->is_declaration) |
c906108c | 8391 | { |
72bf9492 | 8392 | add_partial_symbol (pdi, cu); |
c906108c | 8393 | } |
b7fee5a3 KS |
8394 | if ((cu->language == language_rust |
8395 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8396 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8397 | set_addrmap, cu); | |
c906108c | 8398 | break; |
91c24f0a | 8399 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8400 | if (!pdi->is_declaration) |
8401 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8402 | break; |
8403 | case DW_TAG_base_type: | |
a02abb62 | 8404 | case DW_TAG_subrange_type: |
c906108c | 8405 | /* File scope base type definitions are added to the partial |
c5aa993b | 8406 | symbol table. */ |
72bf9492 | 8407 | add_partial_symbol (pdi, cu); |
c906108c | 8408 | break; |
d9fa45fe | 8409 | case DW_TAG_namespace: |
cdc07690 | 8410 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8411 | break; |
5d7cb8df | 8412 | case DW_TAG_module: |
59c35742 AB |
8413 | if (!pdi->is_declaration) |
8414 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8415 | break; |
95554aad TT |
8416 | case DW_TAG_imported_unit: |
8417 | { | |
8418 | struct dwarf2_per_cu_data *per_cu; | |
8419 | ||
f4dc4d17 DE |
8420 | /* For now we don't handle imported units in type units. */ |
8421 | if (cu->per_cu->is_debug_types) | |
8422 | { | |
8423 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8424 | " supported in type units [in module %s]"), | |
518817b3 | 8425 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8426 | } |
8427 | ||
e3b94546 SM |
8428 | per_cu = dwarf2_find_containing_comp_unit |
8429 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8430 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8431 | |
8432 | /* Go read the partial unit, if needed. */ | |
8433 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8434 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8435 | |
ae640021 | 8436 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8437 | } |
8438 | break; | |
74921315 KS |
8439 | case DW_TAG_imported_declaration: |
8440 | add_partial_symbol (pdi, cu); | |
8441 | break; | |
c906108c SS |
8442 | default: |
8443 | break; | |
8444 | } | |
8445 | } | |
8446 | ||
72bf9492 DJ |
8447 | /* If the die has a sibling, skip to the sibling. */ |
8448 | ||
8449 | pdi = pdi->die_sibling; | |
8450 | } | |
8451 | } | |
8452 | ||
8453 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8454 | |
72bf9492 | 8455 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8456 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8457 | Enumerators are an exception; they use the scope of their parent |
8458 | enumeration type, i.e. the name of the enumeration type is not | |
8459 | prepended to the enumerator. | |
91c24f0a | 8460 | |
72bf9492 DJ |
8461 | There are two complexities. One is DW_AT_specification; in this |
8462 | case "parent" means the parent of the target of the specification, | |
8463 | instead of the direct parent of the DIE. The other is compilers | |
8464 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8465 | the fully qualified name of structure types from their members' | |
8466 | linkage names. This must be done using the DIE's children rather | |
8467 | than the children of any DW_AT_specification target. We only need | |
8468 | to do this for structures at the top level, i.e. if the target of | |
8469 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8470 | have a parent. */ | |
8471 | ||
8472 | /* Compute the scope prefix associated with PDI's parent, in | |
8473 | compilation unit CU. The result will be allocated on CU's | |
8474 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8475 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8476 | static const char * |
72bf9492 DJ |
8477 | partial_die_parent_scope (struct partial_die_info *pdi, |
8478 | struct dwarf2_cu *cu) | |
8479 | { | |
15d034d0 | 8480 | const char *grandparent_scope; |
72bf9492 | 8481 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8482 | |
72bf9492 DJ |
8483 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8484 | then this means the parent of the specification DIE. */ | |
8485 | ||
8486 | real_pdi = pdi; | |
72bf9492 | 8487 | while (real_pdi->has_specification) |
fb816e8b | 8488 | { |
122cf0f2 AB |
8489 | auto res = find_partial_die (real_pdi->spec_offset, |
8490 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8491 | real_pdi = res.pdi; |
8492 | cu = res.cu; | |
8493 | } | |
72bf9492 DJ |
8494 | |
8495 | parent = real_pdi->die_parent; | |
8496 | if (parent == NULL) | |
8497 | return NULL; | |
8498 | ||
8499 | if (parent->scope_set) | |
8500 | return parent->scope; | |
8501 | ||
52356b79 | 8502 | parent->fixup (cu); |
72bf9492 | 8503 | |
10b3939b | 8504 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8505 | |
acebe513 UW |
8506 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8507 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8508 | Work around this problem here. */ | |
8509 | if (cu->language == language_cplus | |
6e70227d | 8510 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8511 | && strcmp (parent->name, "::") == 0 |
8512 | && grandparent_scope == NULL) | |
8513 | { | |
8514 | parent->scope = NULL; | |
8515 | parent->scope_set = 1; | |
8516 | return NULL; | |
8517 | } | |
8518 | ||
0a4b0913 | 8519 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8520 | if (pdi->tag == DW_TAG_enumerator) |
8521 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8522 | parent->scope = grandparent_scope; | |
8523 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8524 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8525 | || parent->tag == DW_TAG_structure_type |
8526 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8527 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8528 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8529 | || parent->tag == DW_TAG_enumeration_type |
8530 | || (cu->language == language_fortran | |
8531 | && parent->tag == DW_TAG_subprogram | |
8532 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8533 | { |
8534 | if (grandparent_scope == NULL) | |
8535 | parent->scope = parent->name; | |
8536 | else | |
3e43a32a MS |
8537 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8538 | grandparent_scope, | |
f55ee35c | 8539 | parent->name, 0, cu); |
72bf9492 | 8540 | } |
72bf9492 DJ |
8541 | else |
8542 | { | |
8543 | /* FIXME drow/2004-04-01: What should we be doing with | |
8544 | function-local names? For partial symbols, we should probably be | |
8545 | ignoring them. */ | |
fa9c3fa0 TT |
8546 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8547 | dwarf_tag_name (parent->tag), | |
8548 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8549 | parent->scope = grandparent_scope; |
c906108c SS |
8550 | } |
8551 | ||
72bf9492 DJ |
8552 | parent->scope_set = 1; |
8553 | return parent->scope; | |
8554 | } | |
8555 | ||
8556 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8557 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8558 | |
43816ebc | 8559 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8560 | partial_die_full_name (struct partial_die_info *pdi, |
8561 | struct dwarf2_cu *cu) | |
8562 | { | |
15d034d0 | 8563 | const char *parent_scope; |
72bf9492 | 8564 | |
98bfdba5 PA |
8565 | /* If this is a template instantiation, we can not work out the |
8566 | template arguments from partial DIEs. So, unfortunately, we have | |
8567 | to go through the full DIEs. At least any work we do building | |
8568 | types here will be reused if full symbols are loaded later. */ | |
8569 | if (pdi->has_template_arguments) | |
8570 | { | |
52356b79 | 8571 | pdi->fixup (cu); |
98bfdba5 PA |
8572 | |
8573 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8574 | { | |
8575 | struct die_info *die; | |
8576 | struct attribute attr; | |
8577 | struct dwarf2_cu *ref_cu = cu; | |
8578 | ||
b64f50a1 | 8579 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8580 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8581 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8582 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8583 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8584 | ||
43816ebc | 8585 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8586 | } |
8587 | } | |
8588 | ||
72bf9492 DJ |
8589 | parent_scope = partial_die_parent_scope (pdi, cu); |
8590 | if (parent_scope == NULL) | |
8591 | return NULL; | |
8592 | else | |
43816ebc TT |
8593 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8594 | pdi->name, 0, cu)); | |
c906108c SS |
8595 | } |
8596 | ||
8597 | static void | |
72bf9492 | 8598 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8599 | { |
518817b3 SM |
8600 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8601 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8602 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8603 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8604 | CORE_ADDR addr = 0; |
15d034d0 | 8605 | const char *actual_name = NULL; |
e142c38c DJ |
8606 | CORE_ADDR baseaddr; |
8607 | ||
b3b3bada | 8608 | baseaddr = objfile->text_section_offset (); |
c906108c | 8609 | |
43816ebc TT |
8610 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8611 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8612 | if (built_actual_name != NULL) |
43816ebc | 8613 | actual_name = built_actual_name.get (); |
63d06c5c | 8614 | |
72bf9492 DJ |
8615 | if (actual_name == NULL) |
8616 | actual_name = pdi->name; | |
8617 | ||
c906108c SS |
8618 | switch (pdi->tag) |
8619 | { | |
b1dc1806 | 8620 | case DW_TAG_inlined_subroutine: |
c906108c | 8621 | case DW_TAG_subprogram: |
79748972 TT |
8622 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8623 | - baseaddr); | |
0a4b0913 AB |
8624 | if (pdi->is_external |
8625 | || cu->language == language_ada | |
8626 | || (cu->language == language_fortran | |
8627 | && pdi->die_parent != NULL | |
8628 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8629 | { | |
8630 | /* Normally, only "external" DIEs are part of the global scope. | |
8631 | But in Ada and Fortran, we want to be able to access nested | |
8632 | procedures globally. So all Ada and Fortran subprograms are | |
8633 | stored in the global scope. */ | |
31edb802 | 8634 | add_psymbol_to_list (actual_name, |
15d034d0 | 8635 | built_actual_name != NULL, |
f47fb265 | 8636 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8637 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8638 | psymbol_placement::GLOBAL, |
79748972 TT |
8639 | addr, |
8640 | cu->language, objfile); | |
c906108c SS |
8641 | } |
8642 | else | |
8643 | { | |
31edb802 | 8644 | add_psymbol_to_list (actual_name, |
15d034d0 | 8645 | built_actual_name != NULL, |
f47fb265 | 8646 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8647 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8648 | psymbol_placement::STATIC, |
1762568f | 8649 | addr, cu->language, objfile); |
c906108c | 8650 | } |
0c1b455e TT |
8651 | |
8652 | if (pdi->main_subprogram && actual_name != NULL) | |
8653 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8654 | break; |
72929c62 | 8655 | case DW_TAG_constant: |
31edb802 | 8656 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8657 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8658 | -1, (pdi->is_external | |
8659 | ? psymbol_placement::GLOBAL | |
8660 | : psymbol_placement::STATIC), | |
8661 | 0, cu->language, objfile); | |
72929c62 | 8662 | break; |
c906108c | 8663 | case DW_TAG_variable: |
95554aad TT |
8664 | if (pdi->d.locdesc) |
8665 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8666 | |
95554aad | 8667 | if (pdi->d.locdesc |
caac4577 JG |
8668 | && addr == 0 |
8669 | && !dwarf2_per_objfile->has_section_at_zero) | |
8670 | { | |
8671 | /* A global or static variable may also have been stripped | |
8672 | out by the linker if unused, in which case its address | |
8673 | will be nullified; do not add such variables into partial | |
8674 | symbol table then. */ | |
8675 | } | |
8676 | else if (pdi->is_external) | |
c906108c SS |
8677 | { |
8678 | /* Global Variable. | |
8679 | Don't enter into the minimal symbol tables as there is | |
8680 | a minimal symbol table entry from the ELF symbols already. | |
8681 | Enter into partial symbol table if it has a location | |
8682 | descriptor or a type. | |
8683 | If the location descriptor is missing, new_symbol will create | |
8684 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8685 | be determined from the minimal symbol table whenever the variable | |
8686 | is referenced. | |
8687 | The address for the partial symbol table entry is not | |
8688 | used by GDB, but it comes in handy for debugging partial symbol | |
8689 | table building. */ | |
8690 | ||
95554aad | 8691 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8692 | add_psymbol_to_list (actual_name, |
15d034d0 | 8693 | built_actual_name != NULL, |
f47fb265 | 8694 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8695 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8696 | psymbol_placement::GLOBAL, |
79748972 | 8697 | addr, cu->language, objfile); |
c906108c SS |
8698 | } |
8699 | else | |
8700 | { | |
ff908ebf AW |
8701 | int has_loc = pdi->d.locdesc != NULL; |
8702 | ||
8703 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8704 | without location descriptors or constant values). */ | |
8705 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8706 | return; |
ff908ebf | 8707 | |
31edb802 | 8708 | add_psymbol_to_list (actual_name, |
15d034d0 | 8709 | built_actual_name != NULL, |
f47fb265 | 8710 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8711 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8712 | psymbol_placement::STATIC, |
79748972 | 8713 | has_loc ? addr : 0, |
f47fb265 | 8714 | cu->language, objfile); |
c906108c SS |
8715 | } |
8716 | break; | |
8717 | case DW_TAG_typedef: | |
8718 | case DW_TAG_base_type: | |
a02abb62 | 8719 | case DW_TAG_subrange_type: |
31edb802 | 8720 | add_psymbol_to_list (actual_name, |
15d034d0 | 8721 | built_actual_name != NULL, |
79748972 | 8722 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8723 | psymbol_placement::STATIC, |
1762568f | 8724 | 0, cu->language, objfile); |
c906108c | 8725 | break; |
74921315 | 8726 | case DW_TAG_imported_declaration: |
72bf9492 | 8727 | case DW_TAG_namespace: |
31edb802 | 8728 | add_psymbol_to_list (actual_name, |
15d034d0 | 8729 | built_actual_name != NULL, |
79748972 | 8730 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8731 | psymbol_placement::GLOBAL, |
1762568f | 8732 | 0, cu->language, objfile); |
72bf9492 | 8733 | break; |
530e8392 | 8734 | case DW_TAG_module: |
a5fd13a9 BH |
8735 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8736 | available without any name. If so, we skip the module as it | |
8737 | doesn't bring any value. */ | |
8738 | if (actual_name != nullptr) | |
31edb802 | 8739 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8740 | built_actual_name != NULL, |
8741 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8742 | psymbol_placement::GLOBAL, | |
8743 | 0, cu->language, objfile); | |
530e8392 | 8744 | break; |
c906108c | 8745 | case DW_TAG_class_type: |
680b30c7 | 8746 | case DW_TAG_interface_type: |
c906108c SS |
8747 | case DW_TAG_structure_type: |
8748 | case DW_TAG_union_type: | |
8749 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8750 | /* Skip external references. The DWARF standard says in the section |
8751 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8752 | structure, union or class type is represented by a structure, | |
8753 | union or class entry that does not have a byte size attribute | |
8754 | and that has a DW_AT_declaration attribute." */ | |
8755 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8756 | return; |
fa4028e9 | 8757 | |
63d06c5c DC |
8758 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8759 | static vs. global. */ | |
31edb802 | 8760 | add_psymbol_to_list (actual_name, |
15d034d0 | 8761 | built_actual_name != NULL, |
79748972 | 8762 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8763 | cu->language == language_cplus |
75aedd27 TT |
8764 | ? psymbol_placement::GLOBAL |
8765 | : psymbol_placement::STATIC, | |
1762568f | 8766 | 0, cu->language, objfile); |
c906108c | 8767 | |
c906108c SS |
8768 | break; |
8769 | case DW_TAG_enumerator: | |
31edb802 | 8770 | add_psymbol_to_list (actual_name, |
15d034d0 | 8771 | built_actual_name != NULL, |
79748972 | 8772 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8773 | cu->language == language_cplus |
75aedd27 TT |
8774 | ? psymbol_placement::GLOBAL |
8775 | : psymbol_placement::STATIC, | |
1762568f | 8776 | 0, cu->language, objfile); |
c906108c SS |
8777 | break; |
8778 | default: | |
8779 | break; | |
8780 | } | |
8781 | } | |
8782 | ||
5c4e30ca DC |
8783 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8784 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8785 | the name of the enclosing namespace. */ | |
91c24f0a | 8786 | |
72bf9492 DJ |
8787 | static void |
8788 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8789 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8790 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8791 | { |
72bf9492 | 8792 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8793 | |
72bf9492 | 8794 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8795 | |
8796 | /* Now scan partial symbols in that namespace. */ | |
8797 | ||
91c24f0a | 8798 | if (pdi->has_children) |
cdc07690 | 8799 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8800 | } |
8801 | ||
5d7cb8df JK |
8802 | /* Read a partial die corresponding to a Fortran module. */ |
8803 | ||
8804 | static void | |
8805 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8806 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8807 | { |
530e8392 KB |
8808 | /* Add a symbol for the namespace. */ |
8809 | ||
8810 | add_partial_symbol (pdi, cu); | |
8811 | ||
f55ee35c | 8812 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8813 | |
8814 | if (pdi->has_children) | |
cdc07690 | 8815 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8816 | } |
8817 | ||
b1dc1806 XR |
8818 | /* Read a partial die corresponding to a subprogram or an inlined |
8819 | subprogram and create a partial symbol for that subprogram. | |
8820 | When the CU language allows it, this routine also defines a partial | |
8821 | symbol for each nested subprogram that this subprogram contains. | |
8822 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8823 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8824 | |
cdc07690 YQ |
8825 | PDI may also be a lexical block, in which case we simply search |
8826 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8827 | Again, this is only performed when the CU language allows this |
8828 | type of definitions. */ | |
8829 | ||
8830 | static void | |
8831 | add_partial_subprogram (struct partial_die_info *pdi, | |
8832 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8833 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8834 | { |
b1dc1806 | 8835 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8836 | { |
8837 | if (pdi->has_pc_info) | |
8838 | { | |
8839 | if (pdi->lowpc < *lowpc) | |
8840 | *lowpc = pdi->lowpc; | |
8841 | if (pdi->highpc > *highpc) | |
8842 | *highpc = pdi->highpc; | |
cdc07690 | 8843 | if (set_addrmap) |
5734ee8b | 8844 | { |
518817b3 | 8845 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
8846 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
8847 | CORE_ADDR baseaddr; | |
b926417a TT |
8848 | CORE_ADDR this_highpc; |
8849 | CORE_ADDR this_lowpc; | |
5734ee8b | 8850 | |
b3b3bada | 8851 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8852 | this_lowpc |
8853 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8854 | pdi->lowpc + baseaddr) | |
8855 | - baseaddr); | |
8856 | this_highpc | |
8857 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8858 | pdi->highpc + baseaddr) | |
8859 | - baseaddr); | |
d320c2b5 | 8860 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8861 | this_lowpc, this_highpc - 1, |
9291a0cd | 8862 | cu->per_cu->v.psymtab); |
5734ee8b | 8863 | } |
481860b3 GB |
8864 | } |
8865 | ||
8866 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8867 | { | |
bc30ff58 | 8868 | if (!pdi->is_declaration) |
e8d05480 JB |
8869 | /* Ignore subprogram DIEs that do not have a name, they are |
8870 | illegal. Do not emit a complaint at this point, we will | |
8871 | do so when we convert this psymtab into a symtab. */ | |
8872 | if (pdi->name) | |
8873 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8874 | } |
8875 | } | |
6e70227d | 8876 | |
bc30ff58 JB |
8877 | if (! pdi->has_children) |
8878 | return; | |
8879 | ||
0a4b0913 | 8880 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8881 | { |
8882 | pdi = pdi->die_child; | |
8883 | while (pdi != NULL) | |
8884 | { | |
52356b79 | 8885 | pdi->fixup (cu); |
bc30ff58 | 8886 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8887 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8888 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8889 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8890 | pdi = pdi->die_sibling; |
8891 | } | |
8892 | } | |
8893 | } | |
8894 | ||
91c24f0a DC |
8895 | /* Read a partial die corresponding to an enumeration type. */ |
8896 | ||
72bf9492 DJ |
8897 | static void |
8898 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8899 | struct dwarf2_cu *cu) | |
91c24f0a | 8900 | { |
72bf9492 | 8901 | struct partial_die_info *pdi; |
91c24f0a DC |
8902 | |
8903 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8904 | add_partial_symbol (enum_pdi, cu); |
8905 | ||
8906 | pdi = enum_pdi->die_child; | |
8907 | while (pdi) | |
91c24f0a | 8908 | { |
72bf9492 | 8909 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8910 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8911 | else |
72bf9492 DJ |
8912 | add_partial_symbol (pdi, cu); |
8913 | pdi = pdi->die_sibling; | |
91c24f0a | 8914 | } |
91c24f0a DC |
8915 | } |
8916 | ||
6caca83c CC |
8917 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8918 | ||
8919 | static unsigned int | |
d521ce57 | 8920 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8921 | { |
8922 | unsigned int bytes_read; | |
8923 | ||
8924 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8925 | } | |
8926 | ||
685af9cd TT |
8927 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8928 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8929 | ||
4bb7a0a7 DJ |
8930 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8931 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8932 | the initial number. */ | |
8933 | ||
8934 | static struct abbrev_info * | |
685af9cd TT |
8935 | peek_die_abbrev (const die_reader_specs &reader, |
8936 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8937 | { |
685af9cd | 8938 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8939 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8940 | unsigned int abbrev_number |
8941 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8942 | |
8943 | if (abbrev_number == 0) | |
8944 | return NULL; | |
8945 | ||
685af9cd | 8946 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8947 | if (!abbrev) |
8948 | { | |
422b9917 | 8949 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8950 | " at offset %s [in module %s]"), |
422b9917 | 8951 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8952 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8953 | } |
8954 | ||
8955 | return abbrev; | |
8956 | } | |
8957 | ||
93311388 DE |
8958 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8959 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8960 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8961 | ||
d521ce57 TT |
8962 | static const gdb_byte * |
8963 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8964 | { |
4bb7a0a7 DJ |
8965 | while (1) |
8966 | { | |
685af9cd TT |
8967 | unsigned int bytes_read; |
8968 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8969 | ||
4bb7a0a7 DJ |
8970 | if (abbrev == NULL) |
8971 | return info_ptr + bytes_read; | |
8972 | else | |
dee91e82 | 8973 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8974 | } |
8975 | } | |
8976 | ||
93311388 DE |
8977 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8978 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8979 | abbrev corresponding to that skipped uleb128 should be passed in |
8980 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8981 | children. */ | |
8982 | ||
d521ce57 TT |
8983 | static const gdb_byte * |
8984 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8985 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8986 | { |
8987 | unsigned int bytes_read; | |
8988 | struct attribute attr; | |
dee91e82 DE |
8989 | bfd *abfd = reader->abfd; |
8990 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8991 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8992 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8993 | unsigned int form, i; |
8994 | ||
8995 | for (i = 0; i < abbrev->num_attrs; i++) | |
8996 | { | |
8997 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8998 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8999 | { | |
18a8505e AT |
9000 | bool ignored; |
9001 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
9002 | &ignored); | |
4bb7a0a7 | 9003 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9004 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9005 | else |
b9502d3f | 9006 | { |
9c541725 PA |
9007 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9008 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9009 | |
9010 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9011 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9012 | else if (sibling_ptr > reader->buffer_end) |
9013 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9014 | else |
9015 | return sibling_ptr; | |
9016 | } | |
4bb7a0a7 DJ |
9017 | } |
9018 | ||
9019 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9020 | form = abbrev->attrs[i].form; | |
9021 | skip_attribute: | |
9022 | switch (form) | |
9023 | { | |
4bb7a0a7 | 9024 | case DW_FORM_ref_addr: |
ae411497 TT |
9025 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9026 | and later it is offset sized. */ | |
9027 | if (cu->header.version == 2) | |
9028 | info_ptr += cu->header.addr_size; | |
9029 | else | |
9030 | info_ptr += cu->header.offset_size; | |
9031 | break; | |
36586728 TT |
9032 | case DW_FORM_GNU_ref_alt: |
9033 | info_ptr += cu->header.offset_size; | |
9034 | break; | |
ae411497 | 9035 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9036 | info_ptr += cu->header.addr_size; |
9037 | break; | |
9038 | case DW_FORM_data1: | |
9039 | case DW_FORM_ref1: | |
9040 | case DW_FORM_flag: | |
8fe0f950 | 9041 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9042 | info_ptr += 1; |
9043 | break; | |
2dc7f7b3 | 9044 | case DW_FORM_flag_present: |
43988095 | 9045 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9046 | break; |
4bb7a0a7 DJ |
9047 | case DW_FORM_data2: |
9048 | case DW_FORM_ref2: | |
8fe0f950 | 9049 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9050 | info_ptr += 2; |
9051 | break; | |
8fe0f950 AT |
9052 | case DW_FORM_strx3: |
9053 | info_ptr += 3; | |
9054 | break; | |
4bb7a0a7 DJ |
9055 | case DW_FORM_data4: |
9056 | case DW_FORM_ref4: | |
8fe0f950 | 9057 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9058 | info_ptr += 4; |
9059 | break; | |
9060 | case DW_FORM_data8: | |
9061 | case DW_FORM_ref8: | |
55f1336d | 9062 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9063 | info_ptr += 8; |
9064 | break; | |
0224619f JK |
9065 | case DW_FORM_data16: |
9066 | info_ptr += 16; | |
9067 | break; | |
4bb7a0a7 | 9068 | case DW_FORM_string: |
9b1c24c8 | 9069 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9070 | info_ptr += bytes_read; |
9071 | break; | |
2dc7f7b3 | 9072 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9073 | case DW_FORM_strp: |
36586728 | 9074 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9075 | info_ptr += cu->header.offset_size; |
9076 | break; | |
2dc7f7b3 | 9077 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9078 | case DW_FORM_block: |
9079 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9080 | info_ptr += bytes_read; | |
9081 | break; | |
9082 | case DW_FORM_block1: | |
9083 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9084 | break; | |
9085 | case DW_FORM_block2: | |
9086 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9087 | break; | |
9088 | case DW_FORM_block4: | |
9089 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9090 | break; | |
336d760d | 9091 | case DW_FORM_addrx: |
cf532bd1 | 9092 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9093 | case DW_FORM_sdata: |
9094 | case DW_FORM_udata: | |
9095 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9096 | case DW_FORM_GNU_addr_index: |
9097 | case DW_FORM_GNU_str_index: | |
18a8505e | 9098 | case DW_FORM_rnglistx: |
d521ce57 | 9099 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9100 | break; |
9101 | case DW_FORM_indirect: | |
9102 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9103 | info_ptr += bytes_read; | |
9104 | /* We need to continue parsing from here, so just go back to | |
9105 | the top. */ | |
9106 | goto skip_attribute; | |
9107 | ||
9108 | default: | |
3e43a32a MS |
9109 | error (_("Dwarf Error: Cannot handle %s " |
9110 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9111 | dwarf_form_name (form), |
9112 | bfd_get_filename (abfd)); | |
9113 | } | |
9114 | } | |
9115 | ||
9116 | if (abbrev->has_children) | |
dee91e82 | 9117 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9118 | else |
9119 | return info_ptr; | |
9120 | } | |
9121 | ||
93311388 | 9122 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9123 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9124 | |
d521ce57 | 9125 | static const gdb_byte * |
dee91e82 DE |
9126 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9127 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9128 | const gdb_byte *info_ptr) |
91c24f0a DC |
9129 | { |
9130 | /* Do we know the sibling already? */ | |
72bf9492 | 9131 | |
91c24f0a DC |
9132 | if (orig_pdi->sibling) |
9133 | return orig_pdi->sibling; | |
9134 | ||
9135 | /* Are there any children to deal with? */ | |
9136 | ||
9137 | if (!orig_pdi->has_children) | |
9138 | return info_ptr; | |
9139 | ||
4bb7a0a7 | 9140 | /* Skip the children the long way. */ |
91c24f0a | 9141 | |
dee91e82 | 9142 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9143 | } |
9144 | ||
257e7a09 | 9145 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9146 | not NULL. */ |
c906108c | 9147 | |
891813be TT |
9148 | void |
9149 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9150 | { |
ed2dc618 SM |
9151 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9152 | = get_dwarf2_per_objfile (objfile); | |
9153 | ||
077cbab2 TT |
9154 | gdb_assert (!readin); |
9155 | /* If this psymtab is constructed from a debug-only objfile, the | |
9156 | has_section_at_zero flag will not necessarily be correct. We | |
9157 | can get the correct value for this flag by looking at the data | |
9158 | associated with the (presumably stripped) associated objfile. */ | |
9159 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9160 | { |
077cbab2 TT |
9161 | struct dwarf2_per_objfile *dpo_backlink |
9162 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 9163 | |
077cbab2 TT |
9164 | dwarf2_per_objfile->has_section_at_zero |
9165 | = dpo_backlink->has_section_at_zero; | |
9166 | } | |
98bfdba5 | 9167 | |
077cbab2 | 9168 | dwarf2_per_objfile->reading_partial_symbols = 0; |
c906108c | 9169 | |
8566b89b | 9170 | expand_psymtab (objfile); |
95554aad | 9171 | |
ed2dc618 | 9172 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9173 | } |
9cdd5dbd DE |
9174 | \f |
9175 | /* Reading in full CUs. */ | |
c906108c | 9176 | |
10b3939b DJ |
9177 | /* Add PER_CU to the queue. */ |
9178 | ||
9179 | static void | |
95554aad TT |
9180 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9181 | enum language pretend_language) | |
10b3939b DJ |
9182 | { |
9183 | struct dwarf2_queue_item *item; | |
9184 | ||
9185 | per_cu->queued = 1; | |
8d749320 | 9186 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9187 | item->per_cu = per_cu; |
95554aad | 9188 | item->pretend_language = pretend_language; |
10b3939b DJ |
9189 | item->next = NULL; |
9190 | ||
9191 | if (dwarf2_queue == NULL) | |
9192 | dwarf2_queue = item; | |
9193 | else | |
9194 | dwarf2_queue_tail->next = item; | |
9195 | ||
9196 | dwarf2_queue_tail = item; | |
9197 | } | |
9198 | ||
89e63ee4 DE |
9199 | /* If PER_CU is not yet queued, add it to the queue. |
9200 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9201 | dependency. | |
0907af0c | 9202 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9203 | meaning either PER_CU is already queued or it is already loaded. |
9204 | ||
9205 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9206 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9207 | |
9208 | static int | |
89e63ee4 | 9209 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9210 | struct dwarf2_per_cu_data *per_cu, |
9211 | enum language pretend_language) | |
9212 | { | |
9213 | /* We may arrive here during partial symbol reading, if we need full | |
9214 | DIEs to process an unusual case (e.g. template arguments). Do | |
9215 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9216 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9217 | { |
9218 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9219 | return 1; | |
9220 | return 0; | |
9221 | } | |
9222 | ||
9223 | /* Mark the dependence relation so that we don't flush PER_CU | |
9224 | too early. */ | |
89e63ee4 DE |
9225 | if (dependent_cu != NULL) |
9226 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9227 | |
9228 | /* If it's already on the queue, we have nothing to do. */ | |
9229 | if (per_cu->queued) | |
9230 | return 0; | |
9231 | ||
9232 | /* If the compilation unit is already loaded, just mark it as | |
9233 | used. */ | |
9234 | if (per_cu->cu != NULL) | |
9235 | { | |
9236 | per_cu->cu->last_used = 0; | |
9237 | return 0; | |
9238 | } | |
9239 | ||
9240 | /* Add it to the queue. */ | |
9241 | queue_comp_unit (per_cu, pretend_language); | |
9242 | ||
9243 | return 1; | |
9244 | } | |
9245 | ||
10b3939b DJ |
9246 | /* Process the queue. */ |
9247 | ||
9248 | static void | |
ed2dc618 | 9249 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9250 | { |
9251 | struct dwarf2_queue_item *item, *next_item; | |
9252 | ||
b4f54984 | 9253 | if (dwarf_read_debug) |
45cfd468 DE |
9254 | { |
9255 | fprintf_unfiltered (gdb_stdlog, | |
9256 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9257 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9258 | } |
9259 | ||
03dd20cc DJ |
9260 | /* The queue starts out with one item, but following a DIE reference |
9261 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9262 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9263 | { | |
cc12ce38 DE |
9264 | if ((dwarf2_per_objfile->using_index |
9265 | ? !item->per_cu->v.quick->compunit_symtab | |
9266 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9267 | /* Skip dummy CUs. */ | |
9268 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9269 | { |
9270 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9271 | unsigned int debug_print_threshold; |
247f5c4f | 9272 | char buf[100]; |
f4dc4d17 | 9273 | |
247f5c4f | 9274 | if (per_cu->is_debug_types) |
f4dc4d17 | 9275 | { |
247f5c4f DE |
9276 | struct signatured_type *sig_type = |
9277 | (struct signatured_type *) per_cu; | |
9278 | ||
9d8780f0 | 9279 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9280 | hex_string (sig_type->signature), |
9d8780f0 | 9281 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9282 | /* There can be 100s of TUs. |
9283 | Only print them in verbose mode. */ | |
9284 | debug_print_threshold = 2; | |
f4dc4d17 | 9285 | } |
247f5c4f | 9286 | else |
73be47f5 | 9287 | { |
9d8780f0 SM |
9288 | sprintf (buf, "CU at offset %s", |
9289 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9290 | debug_print_threshold = 1; |
9291 | } | |
247f5c4f | 9292 | |
b4f54984 | 9293 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9294 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9295 | |
9296 | if (per_cu->is_debug_types) | |
9297 | process_full_type_unit (per_cu, item->pretend_language); | |
9298 | else | |
9299 | process_full_comp_unit (per_cu, item->pretend_language); | |
9300 | ||
b4f54984 | 9301 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9302 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9303 | } |
10b3939b DJ |
9304 | |
9305 | item->per_cu->queued = 0; | |
9306 | next_item = item->next; | |
9307 | xfree (item); | |
9308 | } | |
9309 | ||
9310 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9311 | |
b4f54984 | 9312 | if (dwarf_read_debug) |
45cfd468 DE |
9313 | { |
9314 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9315 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9316 | } |
10b3939b DJ |
9317 | } |
9318 | ||
10b3939b DJ |
9319 | /* Read in full symbols for PST, and anything it depends on. */ |
9320 | ||
8566b89b TT |
9321 | void |
9322 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9323 | { |
10b3939b | 9324 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 | 9325 | |
8566b89b | 9326 | if (readin) |
95554aad TT |
9327 | return; |
9328 | ||
0494dbec | 9329 | read_dependencies (objfile); |
aaa75496 | 9330 | |
8566b89b | 9331 | per_cu = per_cu_data; |
10b3939b DJ |
9332 | |
9333 | if (per_cu == NULL) | |
aaa75496 JB |
9334 | { |
9335 | /* It's an include file, no symbols to read for it. | |
9336 | Everything is in the parent symtab. */ | |
8566b89b | 9337 | readin = true; |
aaa75496 JB |
9338 | return; |
9339 | } | |
c906108c | 9340 | |
58f0c718 | 9341 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9342 | } |
9343 | ||
dee91e82 DE |
9344 | /* Trivial hash function for die_info: the hash value of a DIE |
9345 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9346 | |
dee91e82 DE |
9347 | static hashval_t |
9348 | die_hash (const void *item) | |
10b3939b | 9349 | { |
9a3c8263 | 9350 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9351 | |
9c541725 | 9352 | return to_underlying (die->sect_off); |
dee91e82 | 9353 | } |
63d06c5c | 9354 | |
dee91e82 DE |
9355 | /* Trivial comparison function for die_info structures: two DIEs |
9356 | are equal if they have the same offset. */ | |
98bfdba5 | 9357 | |
dee91e82 DE |
9358 | static int |
9359 | die_eq (const void *item_lhs, const void *item_rhs) | |
9360 | { | |
9a3c8263 SM |
9361 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9362 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9363 | |
9c541725 | 9364 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9365 | } |
c906108c | 9366 | |
c0ab21c2 | 9367 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9368 | |
dee91e82 | 9369 | static void |
c0ab21c2 TT |
9370 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
9371 | bool skip_partial, | |
9372 | enum language pretend_language) | |
dee91e82 | 9373 | { |
c0ab21c2 TT |
9374 | gdb_assert (! this_cu->is_debug_types); |
9375 | ||
9376 | cutu_reader reader (this_cu, NULL, 1, 1, skip_partial); | |
9377 | if (reader.dummy_p) | |
9378 | return; | |
9379 | ||
9380 | struct dwarf2_cu *cu = reader.cu; | |
9381 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9382 | |
dee91e82 DE |
9383 | gdb_assert (cu->die_hash == NULL); |
9384 | cu->die_hash = | |
9385 | htab_create_alloc_ex (cu->header.length / 12, | |
9386 | die_hash, | |
9387 | die_eq, | |
9388 | NULL, | |
9389 | &cu->comp_unit_obstack, | |
9390 | hashtab_obstack_allocate, | |
9391 | dummy_obstack_deallocate); | |
e142c38c | 9392 | |
c0ab21c2 TT |
9393 | if (reader.has_children) |
9394 | reader.comp_unit_die->child | |
9395 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9396 | &info_ptr, reader.comp_unit_die); | |
9397 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9398 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9399 | |
9400 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9401 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9402 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9403 | or we won't be able to build types correctly. |
9404 | Similarly, if we do not read the producer, we can not apply | |
9405 | producer-specific interpretation. */ | |
c0ab21c2 | 9406 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
10b3939b DJ |
9407 | } |
9408 | ||
3da10d80 KS |
9409 | /* Add a DIE to the delayed physname list. */ |
9410 | ||
9411 | static void | |
9412 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9413 | const char *name, struct die_info *die, | |
9414 | struct dwarf2_cu *cu) | |
9415 | { | |
9416 | struct delayed_method_info mi; | |
9417 | mi.type = type; | |
9418 | mi.fnfield_index = fnfield_index; | |
9419 | mi.index = index; | |
9420 | mi.name = name; | |
9421 | mi.die = die; | |
c89b44cd | 9422 | cu->method_list.push_back (mi); |
3da10d80 KS |
9423 | } |
9424 | ||
3693fdb3 PA |
9425 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9426 | "const" / "volatile". If so, decrements LEN by the length of the | |
9427 | modifier and return true. Otherwise return false. */ | |
9428 | ||
9429 | template<size_t N> | |
9430 | static bool | |
9431 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9432 | { | |
9433 | size_t mod_len = sizeof (mod) - 1; | |
9434 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9435 | { | |
9436 | len -= mod_len; | |
9437 | return true; | |
9438 | } | |
9439 | return false; | |
9440 | } | |
9441 | ||
3da10d80 KS |
9442 | /* Compute the physnames of any methods on the CU's method list. |
9443 | ||
9444 | The computation of method physnames is delayed in order to avoid the | |
9445 | (bad) condition that one of the method's formal parameters is of an as yet | |
9446 | incomplete type. */ | |
9447 | ||
9448 | static void | |
9449 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9450 | { | |
3693fdb3 | 9451 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9452 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9453 | return; |
9454 | gdb_assert (cu->language == language_cplus); | |
9455 | ||
52941706 | 9456 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9457 | { |
1d06ead6 | 9458 | const char *physname; |
3da10d80 | 9459 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9460 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9461 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9462 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9463 | = physname ? physname : ""; |
3693fdb3 PA |
9464 | |
9465 | /* Since there's no tag to indicate whether a method is a | |
9466 | const/volatile overload, extract that information out of the | |
9467 | demangled name. */ | |
9468 | if (physname != NULL) | |
9469 | { | |
9470 | size_t len = strlen (physname); | |
9471 | ||
9472 | while (1) | |
9473 | { | |
9474 | if (physname[len] == ')') /* shortcut */ | |
9475 | break; | |
9476 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9477 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9478 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9479 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9480 | else |
9481 | break; | |
9482 | } | |
9483 | } | |
3da10d80 | 9484 | } |
c89b44cd TT |
9485 | |
9486 | /* The list is no longer needed. */ | |
9487 | cu->method_list.clear (); | |
3da10d80 KS |
9488 | } |
9489 | ||
a766d390 DE |
9490 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9491 | and it's not clear if/how imported objects will appear. | |
9492 | To keep Go support simple until that's worked out, | |
9493 | go back through what we've read and create something usable. | |
9494 | We could do this while processing each DIE, and feels kinda cleaner, | |
9495 | but that way is more invasive. | |
9496 | This is to, for example, allow the user to type "p var" or "b main" | |
9497 | without having to specify the package name, and allow lookups | |
9498 | of module.object to work in contexts that use the expression | |
9499 | parser. */ | |
9500 | ||
9501 | static void | |
9502 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9503 | { | |
421d1616 | 9504 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9505 | struct pending *list; |
9506 | int i; | |
9507 | ||
c24bdb02 | 9508 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9509 | list != NULL; |
9510 | list = list->next) | |
a766d390 DE |
9511 | { |
9512 | for (i = 0; i < list->nsyms; ++i) | |
9513 | { | |
9514 | struct symbol *sym = list->symbol[i]; | |
9515 | ||
c1b5c1eb | 9516 | if (sym->language () == language_go |
a766d390 DE |
9517 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9518 | { | |
421d1616 TT |
9519 | gdb::unique_xmalloc_ptr<char> this_package_name |
9520 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9521 | |
9522 | if (this_package_name == NULL) | |
9523 | continue; | |
9524 | if (package_name == NULL) | |
421d1616 | 9525 | package_name = std::move (this_package_name); |
a766d390 DE |
9526 | else |
9527 | { | |
518817b3 SM |
9528 | struct objfile *objfile |
9529 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9530 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9531 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9532 | (symbol_symtab (sym) != NULL |
9533 | ? symtab_to_filename_for_display | |
9534 | (symbol_symtab (sym)) | |
e3b94546 | 9535 | : objfile_name (objfile)), |
421d1616 | 9536 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9537 | } |
9538 | } | |
9539 | } | |
9540 | } | |
9541 | ||
9542 | if (package_name != NULL) | |
9543 | { | |
518817b3 | 9544 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9545 | const char *saved_package_name |
421d1616 | 9546 | = obstack_strdup (&objfile->per_bfd->storage_obstack, package_name.get ()); |
19f392bc UW |
9547 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9548 | saved_package_name); | |
a766d390 DE |
9549 | struct symbol *sym; |
9550 | ||
e623cf5d | 9551 | sym = allocate_symbol (objfile); |
d3ecddab | 9552 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9553 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9554 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9555 | e.g., "main" finds the "main" module and not C's main(). */ | |
9556 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9557 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9558 | SYMBOL_TYPE (sym) = type; |
9559 | ||
c24bdb02 | 9560 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9561 | } |
9562 | } | |
9563 | ||
c9317f21 TT |
9564 | /* Allocate a fully-qualified name consisting of the two parts on the |
9565 | obstack. */ | |
9566 | ||
9567 | static const char * | |
9568 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9569 | { | |
9570 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9571 | } | |
9572 | ||
9573 | /* A helper that allocates a struct discriminant_info to attach to a | |
9574 | union type. */ | |
9575 | ||
9576 | static struct discriminant_info * | |
9577 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9578 | int default_index) | |
9579 | { | |
9580 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9581 | gdb_assert (discriminant_index == -1 |
9582 | || (discriminant_index >= 0 | |
9583 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9584 | gdb_assert (default_index == -1 |
c7b15a66 | 9585 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9586 | |
9587 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9588 | ||
9589 | struct discriminant_info *disc | |
9590 | = ((struct discriminant_info *) | |
9591 | TYPE_ZALLOC (type, | |
9592 | offsetof (struct discriminant_info, discriminants) | |
9593 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9594 | disc->default_index = default_index; | |
9595 | disc->discriminant_index = discriminant_index; | |
9596 | ||
9597 | struct dynamic_prop prop; | |
9598 | prop.kind = PROP_UNDEFINED; | |
9599 | prop.data.baton = disc; | |
9600 | ||
9601 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9602 | ||
9603 | return disc; | |
9604 | } | |
9605 | ||
9606 | /* Some versions of rustc emitted enums in an unusual way. | |
9607 | ||
9608 | Ordinary enums were emitted as unions. The first element of each | |
9609 | structure in the union was named "RUST$ENUM$DISR". This element | |
9610 | held the discriminant. | |
9611 | ||
9612 | These versions of Rust also implemented the "non-zero" | |
9613 | optimization. When the enum had two values, and one is empty and | |
9614 | the other holds a pointer that cannot be zero, the pointer is used | |
9615 | as the discriminant, with a zero value meaning the empty variant. | |
9616 | Here, the union's first member is of the form | |
9617 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9618 | where the fieldnos are the indices of the fields that should be | |
9619 | traversed in order to find the field (which may be several fields deep) | |
9620 | and the variantname is the name of the variant of the case when the | |
9621 | field is zero. | |
9622 | ||
9623 | This function recognizes whether TYPE is of one of these forms, | |
9624 | and, if so, smashes it to be a variant type. */ | |
9625 | ||
9626 | static void | |
9627 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9628 | { | |
9629 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9630 | ||
9631 | /* We don't need to deal with empty enums. */ | |
9632 | if (TYPE_NFIELDS (type) == 0) | |
9633 | return; | |
9634 | ||
9635 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9636 | if (TYPE_NFIELDS (type) == 1 | |
9637 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9638 | { | |
9639 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9640 | ||
9641 | /* Decode the field name to find the offset of the | |
9642 | discriminant. */ | |
9643 | ULONGEST bit_offset = 0; | |
9644 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9645 | while (name[0] >= '0' && name[0] <= '9') | |
9646 | { | |
9647 | char *tail; | |
9648 | unsigned long index = strtoul (name, &tail, 10); | |
9649 | name = tail; | |
9650 | if (*name != '$' | |
9651 | || index >= TYPE_NFIELDS (field_type) | |
9652 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9653 | != FIELD_LOC_KIND_BITPOS)) | |
9654 | { | |
b98664d3 | 9655 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9656 | "[in module %s]"), |
9657 | TYPE_FIELD_NAME (type, 0), | |
9658 | objfile_name (objfile)); | |
9659 | return; | |
9660 | } | |
9661 | ++name; | |
9662 | ||
9663 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9664 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9665 | } | |
9666 | ||
9667 | /* Make a union to hold the variants. */ | |
9668 | struct type *union_type = alloc_type (objfile); | |
9669 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9670 | TYPE_NFIELDS (union_type) = 3; | |
9671 | TYPE_FIELDS (union_type) | |
9672 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9673 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9674 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9675 | |
9676 | /* Put the discriminant must at index 0. */ | |
9677 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9678 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9679 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9680 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9681 | ||
9682 | /* The order of fields doesn't really matter, so put the real | |
9683 | field at index 1 and the data-less field at index 2. */ | |
9684 | struct discriminant_info *disc | |
9685 | = alloc_discriminant_info (union_type, 0, 1); | |
9686 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9687 | TYPE_FIELD_NAME (union_type, 1) | |
9688 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9689 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9690 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9691 | TYPE_FIELD_NAME (union_type, 1)); | |
9692 | ||
9693 | const char *dataless_name | |
9694 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9695 | name); | |
9696 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9697 | dataless_name); | |
9698 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9699 | /* NAME points into the original discriminant name, which | |
9700 | already has the correct lifetime. */ | |
9701 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9702 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9703 | disc->discriminants[2] = 0; | |
9704 | ||
9705 | /* Smash this type to be a structure type. We have to do this | |
9706 | because the type has already been recorded. */ | |
9707 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9708 | TYPE_NFIELDS (type) = 1; | |
9709 | TYPE_FIELDS (type) | |
9710 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9711 | ||
9712 | /* Install the variant part. */ | |
9713 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9714 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9715 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9716 | } | |
77c2dba3 TT |
9717 | /* A union with a single anonymous field is probably an old-style |
9718 | univariant enum. */ | |
9719 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9720 | { |
c9317f21 TT |
9721 | /* Smash this type to be a structure type. We have to do this |
9722 | because the type has already been recorded. */ | |
9723 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9724 | ||
9725 | /* Make a union to hold the variants. */ | |
9726 | struct type *union_type = alloc_type (objfile); | |
9727 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9728 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9729 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9730 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9731 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9732 | ||
9733 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9734 | const char *variant_name | |
9735 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9736 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9737 | TYPE_NAME (field_type) | |
9738 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9739 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9740 | |
9741 | /* Install the union in the outer struct type. */ | |
9742 | TYPE_NFIELDS (type) = 1; | |
9743 | TYPE_FIELDS (type) | |
9744 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9745 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9746 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9747 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9748 | ||
9749 | alloc_discriminant_info (union_type, -1, 0); | |
9750 | } | |
9751 | else | |
9752 | { | |
9753 | struct type *disr_type = nullptr; | |
9754 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9755 | { | |
9756 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9757 | ||
a037790e TT |
9758 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9759 | { | |
9760 | /* All fields of a true enum will be structs. */ | |
9761 | return; | |
9762 | } | |
9763 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9764 | { |
9765 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9766 | disr_type = nullptr; |
c9317f21 TT |
9767 | } |
9768 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9769 | "RUST$ENUM$DISR") != 0) | |
9770 | { | |
9771 | /* Not a Rust enum. */ | |
9772 | return; | |
9773 | } | |
9774 | else | |
9775 | { | |
9776 | /* Found one. */ | |
9777 | break; | |
9778 | } | |
9779 | } | |
9780 | ||
9781 | /* If we got here without a discriminant, then it's probably | |
9782 | just a union. */ | |
9783 | if (disr_type == nullptr) | |
9784 | return; | |
9785 | ||
9786 | /* Smash this type to be a structure type. We have to do this | |
9787 | because the type has already been recorded. */ | |
9788 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9789 | ||
9790 | /* Make a union to hold the variants. */ | |
9791 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
9792 | struct type *union_type = alloc_type (objfile); | |
9793 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9794 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
9795 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9796 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9797 | TYPE_FIELDS (union_type) |
9798 | = (struct field *) TYPE_ZALLOC (union_type, | |
9799 | (TYPE_NFIELDS (union_type) | |
9800 | * sizeof (struct field))); | |
9801 | ||
9802 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
9803 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
9804 | ||
9805 | /* Install the discriminant at index 0 in the union. */ | |
9806 | TYPE_FIELD (union_type, 0) = *disr_field; | |
9807 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9808 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9809 | ||
9810 | /* Install the union in the outer struct type. */ | |
9811 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9812 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9813 | TYPE_NFIELDS (type) = 1; | |
9814 | ||
9815 | /* Set the size and offset of the union type. */ | |
9816 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9817 | ||
9818 | /* We need a way to find the correct discriminant given a | |
9819 | variant name. For convenience we build a map here. */ | |
9820 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9821 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9822 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9823 | { | |
9824 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9825 | { | |
9826 | const char *name | |
9827 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9828 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9829 | } | |
9830 | } | |
9831 | ||
9832 | int n_fields = TYPE_NFIELDS (union_type); | |
9833 | struct discriminant_info *disc | |
9834 | = alloc_discriminant_info (union_type, 0, -1); | |
9835 | /* Skip the discriminant here. */ | |
9836 | for (int i = 1; i < n_fields; ++i) | |
9837 | { | |
9838 | /* Find the final word in the name of this variant's type. | |
9839 | That name can be used to look up the correct | |
9840 | discriminant. */ | |
9841 | const char *variant_name | |
9842 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
9843 | i))); | |
9844 | ||
9845 | auto iter = discriminant_map.find (variant_name); | |
9846 | if (iter != discriminant_map.end ()) | |
9847 | disc->discriminants[i] = iter->second; | |
9848 | ||
bedda9ac | 9849 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 9850 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
9851 | if (TYPE_NFIELDS (sub_type) > 0) |
9852 | { | |
9853 | --TYPE_NFIELDS (sub_type); | |
9854 | ++TYPE_FIELDS (sub_type); | |
9855 | } | |
c9317f21 TT |
9856 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
9857 | TYPE_NAME (sub_type) | |
9858 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9859 | TYPE_NAME (type), variant_name); | |
9860 | } | |
9861 | } | |
9862 | } | |
9863 | ||
9864 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9865 | ||
9866 | static void | |
9867 | rust_union_quirks (struct dwarf2_cu *cu) | |
9868 | { | |
9869 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9870 | for (type *type_ : cu->rust_unions) |
9871 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9872 | /* We don't need this any more. */ |
9873 | cu->rust_unions.clear (); | |
c9317f21 TT |
9874 | } |
9875 | ||
95554aad TT |
9876 | /* Return the symtab for PER_CU. This works properly regardless of |
9877 | whether we're using the index or psymtabs. */ | |
9878 | ||
43f3e411 DE |
9879 | static struct compunit_symtab * |
9880 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9881 | { |
ed2dc618 | 9882 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9883 | ? per_cu->v.quick->compunit_symtab |
9884 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9885 | } |
9886 | ||
9887 | /* A helper function for computing the list of all symbol tables | |
9888 | included by PER_CU. */ | |
9889 | ||
9890 | static void | |
4c39bc03 | 9891 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9892 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9893 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9894 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9895 | { |
9896 | void **slot; | |
43f3e411 | 9897 | struct compunit_symtab *cust; |
95554aad TT |
9898 | |
9899 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9900 | if (*slot != NULL) | |
9901 | { | |
9902 | /* This inclusion and its children have been processed. */ | |
9903 | return; | |
9904 | } | |
9905 | ||
9906 | *slot = per_cu; | |
9907 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9908 | cust = get_compunit_symtab (per_cu); |
9909 | if (cust != NULL) | |
ec94af83 DE |
9910 | { |
9911 | /* If this is a type unit only add its symbol table if we haven't | |
9912 | seen it yet (type unit per_cu's can share symtabs). */ | |
9913 | if (per_cu->is_debug_types) | |
9914 | { | |
43f3e411 | 9915 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9916 | if (*slot == NULL) |
9917 | { | |
43f3e411 | 9918 | *slot = cust; |
4c39bc03 | 9919 | result->push_back (cust); |
43f3e411 DE |
9920 | if (cust->user == NULL) |
9921 | cust->user = immediate_parent; | |
ec94af83 DE |
9922 | } |
9923 | } | |
9924 | else | |
f9125b6c | 9925 | { |
4c39bc03 | 9926 | result->push_back (cust); |
43f3e411 DE |
9927 | if (cust->user == NULL) |
9928 | cust->user = immediate_parent; | |
f9125b6c | 9929 | } |
ec94af83 | 9930 | } |
95554aad | 9931 | |
ae640021 AB |
9932 | if (!per_cu->imported_symtabs_empty ()) |
9933 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9934 | { | |
9935 | recursively_compute_inclusions (result, all_children, | |
9936 | all_type_symtabs, ptr, cust); | |
9937 | } | |
95554aad TT |
9938 | } |
9939 | ||
43f3e411 | 9940 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9941 | PER_CU. */ |
9942 | ||
9943 | static void | |
43f3e411 | 9944 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9945 | { |
f4dc4d17 DE |
9946 | gdb_assert (! per_cu->is_debug_types); |
9947 | ||
ae640021 | 9948 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9949 | { |
ae640021 | 9950 | int len; |
4c39bc03 | 9951 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9952 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9953 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9954 | |
9955 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9956 | if (cust == NULL) |
95554aad TT |
9957 | return; |
9958 | ||
9959 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9960 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9961 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9962 | NULL, xcalloc, xfree); | |
95554aad | 9963 | |
ae640021 | 9964 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9965 | { |
9966 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9967 | all_type_symtabs, ptr, cust); |
ec94af83 | 9968 | } |
95554aad | 9969 | |
ec94af83 | 9970 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9971 | len = result_symtabs.size (); |
43f3e411 | 9972 | cust->includes |
ed2dc618 | 9973 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9974 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9975 | memcpy (cust->includes, result_symtabs.data (), |
9976 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9977 | cust->includes[len] = NULL; |
95554aad | 9978 | |
95554aad | 9979 | htab_delete (all_children); |
ec94af83 | 9980 | htab_delete (all_type_symtabs); |
95554aad TT |
9981 | } |
9982 | } | |
9983 | ||
9984 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9985 | read. */ | |
9986 | ||
9987 | static void | |
ed2dc618 | 9988 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9989 | { |
71b73764 | 9990 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9991 | { |
9992 | if (! iter->is_debug_types) | |
43f3e411 | 9993 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9994 | } |
95554aad | 9995 | |
c5d0225d | 9996 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9997 | } |
9998 | ||
9cdd5dbd | 9999 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10000 | already been loaded into memory. */ |
10001 | ||
10002 | static void | |
95554aad TT |
10003 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10004 | enum language pretend_language) | |
10b3939b | 10005 | { |
10b3939b | 10006 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10007 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10008 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10009 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10010 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10011 | struct compunit_symtab *cust; |
10b3939b | 10012 | CORE_ADDR baseaddr; |
4359dff1 | 10013 | struct block *static_block; |
3e29f34a | 10014 | CORE_ADDR addr; |
10b3939b | 10015 | |
b3b3bada | 10016 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10017 | |
c89b44cd TT |
10018 | /* Clear the list here in case something was left over. */ |
10019 | cu->method_list.clear (); | |
10b3939b | 10020 | |
95554aad TT |
10021 | cu->language = pretend_language; |
10022 | cu->language_defn = language_def (cu->language); | |
10023 | ||
c906108c | 10024 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10025 | process_die (cu->dies, cu); |
c906108c | 10026 | |
a766d390 DE |
10027 | /* For now fudge the Go package. */ |
10028 | if (cu->language == language_go) | |
10029 | fixup_go_packaging (cu); | |
10030 | ||
5f48f8f3 | 10031 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10032 | should be complete, and it should now be safe to compute all of the |
10033 | physnames. */ | |
10034 | compute_delayed_physnames (cu); | |
3da10d80 | 10035 | |
c9317f21 TT |
10036 | if (cu->language == language_rust) |
10037 | rust_union_quirks (cu); | |
10038 | ||
fae299cd DC |
10039 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10040 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10041 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10042 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10043 | |
3e29f34a | 10044 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10045 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10046 | |
10047 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10048 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10049 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10050 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10051 | this comp unit. */ | |
10052 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10053 | ||
c24bdb02 | 10054 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10055 | SECT_OFF_TEXT (objfile), |
10056 | 0); | |
c906108c | 10057 | |
43f3e411 | 10058 | if (cust != NULL) |
c906108c | 10059 | { |
df15bd07 | 10060 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10061 | |
8be455d7 JK |
10062 | /* Set symtab language to language from DW_AT_language. If the |
10063 | compilation is from a C file generated by language preprocessors, do | |
10064 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10065 | if (!(cu->language == language_c |
40e3ad0e | 10066 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10067 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10068 | |
10069 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10070 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10071 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10072 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10073 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10074 | |
10075 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10076 | needed, it would be wrong due to missing DW_AT_producer there. | |
10077 | ||
10078 | Still one can confuse GDB by using non-standard GCC compilation | |
10079 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10080 | */ |
ab260dad | 10081 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10082 | cust->locations_valid = 1; |
e0d00bc7 JK |
10083 | |
10084 | if (gcc_4_minor >= 5) | |
43f3e411 | 10085 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10086 | |
43f3e411 | 10087 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10088 | } |
9291a0cd TT |
10089 | |
10090 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10091 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10092 | else |
10093 | { | |
891813be | 10094 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10095 | pst->compunit_symtab = cust; |
6d94535f | 10096 | pst->readin = true; |
9291a0cd | 10097 | } |
c906108c | 10098 | |
95554aad | 10099 | /* Push it for inclusion processing later. */ |
c5d0225d | 10100 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10101 | |
10102 | /* Not needed any more. */ | |
c24bdb02 | 10103 | cu->reset_builder (); |
f4dc4d17 | 10104 | } |
45cfd468 | 10105 | |
f4dc4d17 DE |
10106 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10107 | already been loaded into memory. */ | |
10108 | ||
10109 | static void | |
10110 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10111 | enum language pretend_language) | |
10112 | { | |
10113 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10114 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10115 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10116 | struct compunit_symtab *cust; |
0186c6a7 DE |
10117 | struct signatured_type *sig_type; |
10118 | ||
10119 | gdb_assert (per_cu->is_debug_types); | |
10120 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10121 | |
c89b44cd TT |
10122 | /* Clear the list here in case something was left over. */ |
10123 | cu->method_list.clear (); | |
f4dc4d17 | 10124 | |
f4dc4d17 DE |
10125 | cu->language = pretend_language; |
10126 | cu->language_defn = language_def (cu->language); | |
10127 | ||
10128 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10129 | process_die (cu->dies, cu); | |
10130 | ||
10131 | /* For now fudge the Go package. */ | |
10132 | if (cu->language == language_go) | |
10133 | fixup_go_packaging (cu); | |
10134 | ||
5f48f8f3 | 10135 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10136 | should be complete, and it should now be safe to compute all of the |
10137 | physnames. */ | |
10138 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10139 | |
c9317f21 TT |
10140 | if (cu->language == language_rust) |
10141 | rust_union_quirks (cu); | |
10142 | ||
f4dc4d17 DE |
10143 | /* TUs share symbol tables. |
10144 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10145 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10146 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10147 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10148 | { |
c24bdb02 KS |
10149 | buildsym_compunit *builder = cu->get_builder (); |
10150 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 10151 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10152 | |
43f3e411 | 10153 | if (cust != NULL) |
f4dc4d17 DE |
10154 | { |
10155 | /* Set symtab language to language from DW_AT_language. If the | |
10156 | compilation is from a C file generated by language preprocessors, | |
10157 | do not set the language if it was already deduced by | |
10158 | start_subfile. */ | |
43f3e411 DE |
10159 | if (!(cu->language == language_c |
10160 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10161 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10162 | } |
10163 | } | |
10164 | else | |
10165 | { | |
c24bdb02 | 10166 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 10167 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10168 | } |
10169 | ||
10170 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10171 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10172 | else |
10173 | { | |
891813be | 10174 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10175 | pst->compunit_symtab = cust; |
6d94535f | 10176 | pst->readin = true; |
45cfd468 | 10177 | } |
804d2729 TT |
10178 | |
10179 | /* Not needed any more. */ | |
c24bdb02 | 10180 | cu->reset_builder (); |
c906108c SS |
10181 | } |
10182 | ||
95554aad TT |
10183 | /* Process an imported unit DIE. */ |
10184 | ||
10185 | static void | |
10186 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10187 | { | |
10188 | struct attribute *attr; | |
10189 | ||
f4dc4d17 DE |
10190 | /* For now we don't handle imported units in type units. */ |
10191 | if (cu->per_cu->is_debug_types) | |
10192 | { | |
10193 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10194 | " supported in type units [in module %s]"), | |
518817b3 | 10195 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10196 | } |
10197 | ||
95554aad TT |
10198 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10199 | if (attr != NULL) | |
10200 | { | |
9c541725 PA |
10201 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10202 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10203 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10204 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10205 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10206 | |
69d751e3 | 10207 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10208 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10209 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10210 | |
ae640021 | 10211 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10212 | } |
10213 | } | |
10214 | ||
4c8aa72d PA |
10215 | /* RAII object that represents a process_die scope: i.e., |
10216 | starts/finishes processing a DIE. */ | |
10217 | class process_die_scope | |
adde2bff | 10218 | { |
4c8aa72d PA |
10219 | public: |
10220 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10221 | : m_die (die), m_cu (cu) | |
10222 | { | |
10223 | /* We should only be processing DIEs not already in process. */ | |
10224 | gdb_assert (!m_die->in_process); | |
10225 | m_die->in_process = true; | |
10226 | } | |
8c3cb9fa | 10227 | |
4c8aa72d PA |
10228 | ~process_die_scope () |
10229 | { | |
10230 | m_die->in_process = false; | |
10231 | ||
10232 | /* If we're done processing the DIE for the CU that owns the line | |
10233 | header, we don't need the line header anymore. */ | |
10234 | if (m_cu->line_header_die_owner == m_die) | |
10235 | { | |
10236 | delete m_cu->line_header; | |
10237 | m_cu->line_header = NULL; | |
10238 | m_cu->line_header_die_owner = NULL; | |
10239 | } | |
10240 | } | |
10241 | ||
10242 | private: | |
10243 | die_info *m_die; | |
10244 | dwarf2_cu *m_cu; | |
10245 | }; | |
adde2bff | 10246 | |
c906108c SS |
10247 | /* Process a die and its children. */ |
10248 | ||
10249 | static void | |
e7c27a73 | 10250 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10251 | { |
4c8aa72d | 10252 | process_die_scope scope (die, cu); |
adde2bff | 10253 | |
c906108c SS |
10254 | switch (die->tag) |
10255 | { | |
10256 | case DW_TAG_padding: | |
10257 | break; | |
10258 | case DW_TAG_compile_unit: | |
95554aad | 10259 | case DW_TAG_partial_unit: |
e7c27a73 | 10260 | read_file_scope (die, cu); |
c906108c | 10261 | break; |
348e048f DE |
10262 | case DW_TAG_type_unit: |
10263 | read_type_unit_scope (die, cu); | |
10264 | break; | |
c906108c | 10265 | case DW_TAG_subprogram: |
0a4b0913 AB |
10266 | /* Nested subprograms in Fortran get a prefix. */ |
10267 | if (cu->language == language_fortran | |
10268 | && die->parent != NULL | |
10269 | && die->parent->tag == DW_TAG_subprogram) | |
10270 | cu->processing_has_namespace_info = true; | |
10271 | /* Fall through. */ | |
c906108c | 10272 | case DW_TAG_inlined_subroutine: |
edb3359d | 10273 | read_func_scope (die, cu); |
c906108c SS |
10274 | break; |
10275 | case DW_TAG_lexical_block: | |
14898363 L |
10276 | case DW_TAG_try_block: |
10277 | case DW_TAG_catch_block: | |
e7c27a73 | 10278 | read_lexical_block_scope (die, cu); |
c906108c | 10279 | break; |
216f72a1 | 10280 | case DW_TAG_call_site: |
96408a79 SA |
10281 | case DW_TAG_GNU_call_site: |
10282 | read_call_site_scope (die, cu); | |
10283 | break; | |
c906108c | 10284 | case DW_TAG_class_type: |
680b30c7 | 10285 | case DW_TAG_interface_type: |
c906108c SS |
10286 | case DW_TAG_structure_type: |
10287 | case DW_TAG_union_type: | |
134d01f1 | 10288 | process_structure_scope (die, cu); |
c906108c SS |
10289 | break; |
10290 | case DW_TAG_enumeration_type: | |
134d01f1 | 10291 | process_enumeration_scope (die, cu); |
c906108c | 10292 | break; |
134d01f1 | 10293 | |
f792889a DJ |
10294 | /* These dies have a type, but processing them does not create |
10295 | a symbol or recurse to process the children. Therefore we can | |
10296 | read them on-demand through read_type_die. */ | |
c906108c | 10297 | case DW_TAG_subroutine_type: |
72019c9c | 10298 | case DW_TAG_set_type: |
c906108c | 10299 | case DW_TAG_array_type: |
c906108c | 10300 | case DW_TAG_pointer_type: |
c906108c | 10301 | case DW_TAG_ptr_to_member_type: |
c906108c | 10302 | case DW_TAG_reference_type: |
4297a3f0 | 10303 | case DW_TAG_rvalue_reference_type: |
c906108c | 10304 | case DW_TAG_string_type: |
c906108c | 10305 | break; |
134d01f1 | 10306 | |
c906108c | 10307 | case DW_TAG_base_type: |
a02abb62 | 10308 | case DW_TAG_subrange_type: |
cb249c71 | 10309 | case DW_TAG_typedef: |
134d01f1 DJ |
10310 | /* Add a typedef symbol for the type definition, if it has a |
10311 | DW_AT_name. */ | |
f792889a | 10312 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10313 | break; |
c906108c | 10314 | case DW_TAG_common_block: |
e7c27a73 | 10315 | read_common_block (die, cu); |
c906108c SS |
10316 | break; |
10317 | case DW_TAG_common_inclusion: | |
10318 | break; | |
d9fa45fe | 10319 | case DW_TAG_namespace: |
9068261f | 10320 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10321 | read_namespace (die, cu); |
d9fa45fe | 10322 | break; |
5d7cb8df | 10323 | case DW_TAG_module: |
9068261f | 10324 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10325 | read_module (die, cu); |
10326 | break; | |
d9fa45fe | 10327 | case DW_TAG_imported_declaration: |
9068261f | 10328 | cu->processing_has_namespace_info = true; |
74921315 KS |
10329 | if (read_namespace_alias (die, cu)) |
10330 | break; | |
86a73007 TT |
10331 | /* The declaration is not a global namespace alias. */ |
10332 | /* Fall through. */ | |
d9fa45fe | 10333 | case DW_TAG_imported_module: |
9068261f | 10334 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10335 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10336 | || cu->language != language_fortran)) | |
b98664d3 | 10337 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10338 | dwarf_tag_name (die->tag)); |
10339 | read_import_statement (die, cu); | |
d9fa45fe | 10340 | break; |
95554aad TT |
10341 | |
10342 | case DW_TAG_imported_unit: | |
10343 | process_imported_unit_die (die, cu); | |
10344 | break; | |
10345 | ||
71a3c369 TT |
10346 | case DW_TAG_variable: |
10347 | read_variable (die, cu); | |
10348 | break; | |
10349 | ||
c906108c | 10350 | default: |
e7c27a73 | 10351 | new_symbol (die, NULL, cu); |
c906108c SS |
10352 | break; |
10353 | } | |
10354 | } | |
ca69b9e6 DE |
10355 | \f |
10356 | /* DWARF name computation. */ | |
c906108c | 10357 | |
94af9270 KS |
10358 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10359 | needs to have the name of the scope prepended to the name listed in the | |
10360 | die. */ | |
10361 | ||
10362 | static int | |
10363 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10364 | { | |
1c809c68 TT |
10365 | struct attribute *attr; |
10366 | ||
94af9270 KS |
10367 | switch (die->tag) |
10368 | { | |
10369 | case DW_TAG_namespace: | |
10370 | case DW_TAG_typedef: | |
10371 | case DW_TAG_class_type: | |
10372 | case DW_TAG_interface_type: | |
10373 | case DW_TAG_structure_type: | |
10374 | case DW_TAG_union_type: | |
10375 | case DW_TAG_enumeration_type: | |
10376 | case DW_TAG_enumerator: | |
10377 | case DW_TAG_subprogram: | |
08a76f8a | 10378 | case DW_TAG_inlined_subroutine: |
94af9270 | 10379 | case DW_TAG_member: |
74921315 | 10380 | case DW_TAG_imported_declaration: |
94af9270 KS |
10381 | return 1; |
10382 | ||
10383 | case DW_TAG_variable: | |
c2b0a229 | 10384 | case DW_TAG_constant: |
94af9270 KS |
10385 | /* We only need to prefix "globally" visible variables. These include |
10386 | any variable marked with DW_AT_external or any variable that | |
10387 | lives in a namespace. [Variables in anonymous namespaces | |
10388 | require prefixing, but they are not DW_AT_external.] */ | |
10389 | ||
10390 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10391 | { | |
10392 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10393 | |
94af9270 KS |
10394 | return die_needs_namespace (die_specification (die, &spec_cu), |
10395 | spec_cu); | |
10396 | } | |
10397 | ||
1c809c68 | 10398 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10399 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10400 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10401 | return 0; |
10402 | /* A variable in a lexical block of some kind does not need a | |
10403 | namespace, even though in C++ such variables may be external | |
10404 | and have a mangled name. */ | |
10405 | if (die->parent->tag == DW_TAG_lexical_block | |
10406 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10407 | || die->parent->tag == DW_TAG_catch_block |
10408 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10409 | return 0; |
10410 | return 1; | |
94af9270 KS |
10411 | |
10412 | default: | |
10413 | return 0; | |
10414 | } | |
10415 | } | |
10416 | ||
73b9be8b KS |
10417 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10418 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10419 | defined for the given DIE. */ | |
10420 | ||
10421 | static struct attribute * | |
10422 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10423 | { | |
10424 | struct attribute *attr; | |
10425 | ||
10426 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10427 | if (attr == NULL) | |
10428 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10429 | ||
10430 | return attr; | |
10431 | } | |
10432 | ||
10433 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10434 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10435 | defined for the given DIE. */ | |
10436 | ||
10437 | static const char * | |
10438 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10439 | { | |
10440 | const char *linkage_name; | |
10441 | ||
10442 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10443 | if (linkage_name == NULL) | |
10444 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10445 | ||
10446 | return linkage_name; | |
10447 | } | |
10448 | ||
94af9270 | 10449 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10450 | compute the physname for the object, which include a method's: |
9c37b5ae | 10451 | - formal parameters (C++), |
a766d390 | 10452 | - receiver type (Go), |
a766d390 DE |
10453 | |
10454 | The term "physname" is a bit confusing. | |
10455 | For C++, for example, it is the demangled name. | |
10456 | For Go, for example, it's the mangled name. | |
94af9270 | 10457 | |
af6b7be1 JB |
10458 | For Ada, return the DIE's linkage name rather than the fully qualified |
10459 | name. PHYSNAME is ignored.. | |
10460 | ||
94af9270 KS |
10461 | The result is allocated on the objfile_obstack and canonicalized. */ |
10462 | ||
10463 | static const char * | |
15d034d0 TT |
10464 | dwarf2_compute_name (const char *name, |
10465 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10466 | int physname) |
10467 | { | |
518817b3 | 10468 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10469 | |
94af9270 KS |
10470 | if (name == NULL) |
10471 | name = dwarf2_name (die, cu); | |
10472 | ||
2ee7123e DE |
10473 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10474 | but otherwise compute it by typename_concat inside GDB. | |
10475 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10476 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10477 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10478 | will set the demangled name to the result of dwarf2_full_name, and it is |
10479 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10480 | if (cu->language == language_ada |
10481 | || (cu->language == language_fortran && physname)) | |
10482 | { | |
10483 | /* For Ada unit, we prefer the linkage name over the name, as | |
10484 | the former contains the exported name, which the user expects | |
10485 | to be able to reference. Ideally, we want the user to be able | |
10486 | to reference this entity using either natural or linkage name, | |
10487 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10488 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10489 | |
2ee7123e DE |
10490 | if (linkage_name != NULL) |
10491 | return linkage_name; | |
f55ee35c JK |
10492 | } |
10493 | ||
94af9270 KS |
10494 | /* These are the only languages we know how to qualify names in. */ |
10495 | if (name != NULL | |
9c37b5ae | 10496 | && (cu->language == language_cplus |
c44af4eb TT |
10497 | || cu->language == language_fortran || cu->language == language_d |
10498 | || cu->language == language_rust)) | |
94af9270 KS |
10499 | { |
10500 | if (die_needs_namespace (die, cu)) | |
10501 | { | |
0d5cff50 | 10502 | const char *prefix; |
34a68019 | 10503 | const char *canonical_name = NULL; |
94af9270 | 10504 | |
d7e74731 PA |
10505 | string_file buf; |
10506 | ||
94af9270 | 10507 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10508 | if (*prefix != '\0') |
10509 | { | |
43816ebc TT |
10510 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10511 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10512 | |
43816ebc | 10513 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10514 | } |
10515 | else | |
d7e74731 | 10516 | buf.puts (name); |
94af9270 | 10517 | |
98bfdba5 PA |
10518 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10519 | as children with DW_TAG_template_type_param or | |
10520 | DW_TAG_value_type_param. If the latter, add them to the name | |
10521 | here. If the name already has template parameters, then | |
10522 | skip this step; some versions of GCC emit both, and | |
10523 | it is more efficient to use the pre-computed name. | |
10524 | ||
10525 | Something to keep in mind about this process: it is very | |
10526 | unlikely, or in some cases downright impossible, to produce | |
10527 | something that will match the mangled name of a function. | |
10528 | If the definition of the function has the same debug info, | |
10529 | we should be able to match up with it anyway. But fallbacks | |
10530 | using the minimal symbol, for instance to find a method | |
10531 | implemented in a stripped copy of libstdc++, will not work. | |
10532 | If we do not have debug info for the definition, we will have to | |
10533 | match them up some other way. | |
10534 | ||
10535 | When we do name matching there is a related problem with function | |
10536 | templates; two instantiated function templates are allowed to | |
10537 | differ only by their return types, which we do not add here. */ | |
10538 | ||
10539 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10540 | { | |
10541 | struct attribute *attr; | |
10542 | struct die_info *child; | |
10543 | int first = 1; | |
10544 | ||
10545 | die->building_fullname = 1; | |
10546 | ||
10547 | for (child = die->child; child != NULL; child = child->sibling) | |
10548 | { | |
10549 | struct type *type; | |
12df843f | 10550 | LONGEST value; |
d521ce57 | 10551 | const gdb_byte *bytes; |
98bfdba5 PA |
10552 | struct dwarf2_locexpr_baton *baton; |
10553 | struct value *v; | |
10554 | ||
10555 | if (child->tag != DW_TAG_template_type_param | |
10556 | && child->tag != DW_TAG_template_value_param) | |
10557 | continue; | |
10558 | ||
10559 | if (first) | |
10560 | { | |
d7e74731 | 10561 | buf.puts ("<"); |
98bfdba5 PA |
10562 | first = 0; |
10563 | } | |
10564 | else | |
d7e74731 | 10565 | buf.puts (", "); |
98bfdba5 PA |
10566 | |
10567 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10568 | if (attr == NULL) | |
10569 | { | |
b98664d3 | 10570 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10571 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10572 | continue; |
10573 | } | |
10574 | type = die_type (child, cu); | |
10575 | ||
10576 | if (child->tag == DW_TAG_template_type_param) | |
10577 | { | |
c1ec8cea TT |
10578 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10579 | &type_print_raw_options); | |
98bfdba5 PA |
10580 | continue; |
10581 | } | |
10582 | ||
10583 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10584 | if (attr == NULL) | |
10585 | { | |
b98664d3 | 10586 | complaint (_("template parameter missing " |
3e43a32a | 10587 | "DW_AT_const_value")); |
d7e74731 | 10588 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10589 | continue; |
10590 | } | |
10591 | ||
10592 | dwarf2_const_value_attr (attr, type, name, | |
10593 | &cu->comp_unit_obstack, cu, | |
10594 | &value, &bytes, &baton); | |
10595 | ||
10596 | if (TYPE_NOSIGN (type)) | |
10597 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10598 | changed, this can use value_print instead. */ | |
d7e74731 | 10599 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10600 | else |
10601 | { | |
10602 | struct value_print_options opts; | |
10603 | ||
10604 | if (baton != NULL) | |
10605 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10606 | baton->data, | |
10607 | baton->size, | |
10608 | baton->per_cu); | |
10609 | else if (bytes != NULL) | |
10610 | { | |
10611 | v = allocate_value (type); | |
10612 | memcpy (value_contents_writeable (v), bytes, | |
10613 | TYPE_LENGTH (type)); | |
10614 | } | |
10615 | else | |
10616 | v = value_from_longest (type, value); | |
10617 | ||
3e43a32a MS |
10618 | /* Specify decimal so that we do not depend on |
10619 | the radix. */ | |
98bfdba5 PA |
10620 | get_formatted_print_options (&opts, 'd'); |
10621 | opts.raw = 1; | |
d7e74731 | 10622 | value_print (v, &buf, &opts); |
98bfdba5 | 10623 | release_value (v); |
98bfdba5 PA |
10624 | } |
10625 | } | |
10626 | ||
10627 | die->building_fullname = 0; | |
10628 | ||
10629 | if (!first) | |
10630 | { | |
10631 | /* Close the argument list, with a space if necessary | |
10632 | (nested templates). */ | |
d7e74731 PA |
10633 | if (!buf.empty () && buf.string ().back () == '>') |
10634 | buf.puts (" >"); | |
98bfdba5 | 10635 | else |
d7e74731 | 10636 | buf.puts (">"); |
98bfdba5 PA |
10637 | } |
10638 | } | |
10639 | ||
9c37b5ae | 10640 | /* For C++ methods, append formal parameter type |
94af9270 | 10641 | information, if PHYSNAME. */ |
6e70227d | 10642 | |
94af9270 | 10643 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10644 | && cu->language == language_cplus) |
94af9270 KS |
10645 | { |
10646 | struct type *type = read_type_die (die, cu); | |
10647 | ||
d7e74731 | 10648 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10649 | &type_print_raw_options); |
94af9270 | 10650 | |
9c37b5ae | 10651 | if (cu->language == language_cplus) |
94af9270 | 10652 | { |
60430eff DJ |
10653 | /* Assume that an artificial first parameter is |
10654 | "this", but do not crash if it is not. RealView | |
10655 | marks unnamed (and thus unused) parameters as | |
10656 | artificial; there is no way to differentiate | |
10657 | the two cases. */ | |
94af9270 KS |
10658 | if (TYPE_NFIELDS (type) > 0 |
10659 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10660 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10661 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10662 | 0)))) | |
d7e74731 | 10663 | buf.puts (" const"); |
94af9270 KS |
10664 | } |
10665 | } | |
10666 | ||
d7e74731 | 10667 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10668 | |
10669 | if (cu->language == language_cplus) | |
34a68019 | 10670 | canonical_name |
322a8516 | 10671 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10672 | &objfile->per_bfd->storage_obstack); |
10673 | ||
10674 | /* If we only computed INTERMEDIATE_NAME, or if | |
10675 | INTERMEDIATE_NAME is already canonical, then we need to | |
10676 | copy it to the appropriate obstack. */ | |
322a8516 | 10677 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
efba19b0 TT |
10678 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, |
10679 | intermediate_name); | |
34a68019 TT |
10680 | else |
10681 | name = canonical_name; | |
94af9270 KS |
10682 | } |
10683 | } | |
10684 | ||
10685 | return name; | |
10686 | } | |
10687 | ||
0114d602 DJ |
10688 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10689 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10690 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10691 | not have a name. NAME may either be from a previous call to |
10692 | dwarf2_name or NULL. | |
10693 | ||
9c37b5ae | 10694 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10695 | |
10696 | static const char * | |
15d034d0 | 10697 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10698 | { |
94af9270 KS |
10699 | return dwarf2_compute_name (name, die, cu, 0); |
10700 | } | |
0114d602 | 10701 | |
94af9270 KS |
10702 | /* Construct a physname for the given DIE in CU. NAME may either be |
10703 | from a previous call to dwarf2_name or NULL. The result will be | |
10704 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10705 | name. | |
0114d602 | 10706 | |
9c37b5ae | 10707 | The output string will be canonicalized (if C++). */ |
0114d602 | 10708 | |
94af9270 | 10709 | static const char * |
15d034d0 | 10710 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10711 | { |
518817b3 | 10712 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10713 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10714 | int need_copy = 1; |
10715 | ||
10716 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10717 | on its own. */ | |
10718 | if (!die_needs_namespace (die, cu)) | |
10719 | return dwarf2_compute_name (name, die, cu, 1); | |
10720 | ||
73b9be8b | 10721 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10722 | |
e98c9e7c TT |
10723 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10724 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10725 | if (cu->language == language_rust && mangled != NULL | |
10726 | && strchr (mangled, '{') != NULL) | |
10727 | mangled = NULL; | |
10728 | ||
900e11f9 JK |
10729 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10730 | has computed. */ | |
791afaa2 | 10731 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10732 | if (mangled != NULL) |
900e11f9 | 10733 | { |
900e11f9 | 10734 | |
59cc4834 JB |
10735 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10736 | { | |
10737 | /* Do nothing (do not demangle the symbol name). */ | |
10738 | } | |
10739 | else if (cu->language == language_go) | |
a766d390 | 10740 | { |
5e2db402 TT |
10741 | /* This is a lie, but we already lie to the caller new_symbol. |
10742 | new_symbol assumes we return the mangled name. | |
a766d390 | 10743 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10744 | } |
10745 | else | |
10746 | { | |
0eb876f5 JB |
10747 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10748 | their return type. It is easier for GDB users to search | |
10749 | for such functions as `name(params)' than `long name(params)'. | |
10750 | In such case the minimal symbol names do not match the full | |
10751 | symbol names but for template functions there is never a need | |
10752 | to look up their definition from their declaration so | |
10753 | the only disadvantage remains the minimal symbol variant | |
10754 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10755 | demangled.reset (gdb_demangle (mangled, |
10756 | (DMGL_PARAMS | DMGL_ANSI | |
10757 | | DMGL_RET_DROP))); | |
a766d390 | 10758 | } |
900e11f9 | 10759 | if (demangled) |
791afaa2 | 10760 | canon = demangled.get (); |
900e11f9 JK |
10761 | else |
10762 | { | |
10763 | canon = mangled; | |
10764 | need_copy = 0; | |
10765 | } | |
10766 | } | |
10767 | ||
10768 | if (canon == NULL || check_physname) | |
10769 | { | |
10770 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10771 | ||
10772 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10773 | { | |
10774 | /* It may not mean a bug in GDB. The compiler could also | |
10775 | compute DW_AT_linkage_name incorrectly. But in such case | |
10776 | GDB would need to be bug-to-bug compatible. */ | |
10777 | ||
b98664d3 | 10778 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10779 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10780 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10781 | objfile_name (objfile)); |
900e11f9 JK |
10782 | |
10783 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10784 | is available here - over computed PHYSNAME. It is safer | |
10785 | against both buggy GDB and buggy compilers. */ | |
10786 | ||
10787 | retval = canon; | |
10788 | } | |
10789 | else | |
10790 | { | |
10791 | retval = physname; | |
10792 | need_copy = 0; | |
10793 | } | |
10794 | } | |
10795 | else | |
10796 | retval = canon; | |
10797 | ||
10798 | if (need_copy) | |
021887d8 | 10799 | retval = obstack_strdup (&objfile->per_bfd->storage_obstack, retval); |
900e11f9 | 10800 | |
900e11f9 | 10801 | return retval; |
0114d602 DJ |
10802 | } |
10803 | ||
74921315 KS |
10804 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10805 | a new symbol for it. | |
10806 | ||
10807 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10808 | ||
10809 | static int | |
10810 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10811 | { | |
10812 | struct attribute *attr; | |
10813 | ||
10814 | /* If the die does not have a name, this is not a namespace | |
10815 | alias. */ | |
10816 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10817 | if (attr != NULL) | |
10818 | { | |
10819 | int num; | |
10820 | struct die_info *d = die; | |
10821 | struct dwarf2_cu *imported_cu = cu; | |
10822 | ||
10823 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10824 | keep inspecting DIEs until we hit the underlying import. */ | |
10825 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10826 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10827 | { | |
10828 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10829 | if (attr == NULL) | |
10830 | break; | |
10831 | ||
10832 | d = follow_die_ref (d, attr, &imported_cu); | |
10833 | if (d->tag != DW_TAG_imported_declaration) | |
10834 | break; | |
10835 | } | |
10836 | ||
10837 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10838 | { | |
b98664d3 | 10839 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10840 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10841 | return 0; |
10842 | } | |
10843 | ||
10844 | if (attr != NULL) | |
10845 | { | |
10846 | struct type *type; | |
9c541725 | 10847 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 10848 | |
9c541725 | 10849 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10850 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10851 | { | |
10852 | /* This declaration is a global namespace alias. Add | |
10853 | a symbol for it whose type is the aliased namespace. */ | |
10854 | new_symbol (die, type, cu); | |
10855 | return 1; | |
10856 | } | |
10857 | } | |
10858 | } | |
10859 | ||
10860 | return 0; | |
10861 | } | |
10862 | ||
22cee43f | 10863 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10864 | current context for CU. |
22cee43f PMR |
10865 | |
10866 | For Ada, imported declarations can materialize renamings, which *may* be | |
10867 | global. However it is impossible (for now?) in DWARF to distinguish | |
10868 | "external" imported declarations and "static" ones. As all imported | |
10869 | declarations seem to be static in all other languages, make them all CU-wide | |
10870 | global only in Ada. */ | |
10871 | ||
10872 | static struct using_direct ** | |
804d2729 | 10873 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10874 | { |
c24bdb02 KS |
10875 | if (cu->language == language_ada |
10876 | && cu->get_builder ()->outermost_context_p ()) | |
10877 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10878 | else |
c24bdb02 | 10879 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10880 | } |
10881 | ||
27aa8d6a SW |
10882 | /* Read the import statement specified by the given die and record it. */ |
10883 | ||
10884 | static void | |
10885 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10886 | { | |
518817b3 | 10887 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10888 | struct attribute *import_attr; |
32019081 | 10889 | struct die_info *imported_die, *child_die; |
de4affc9 | 10890 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10891 | const char *imported_name; |
794684b6 | 10892 | const char *imported_name_prefix; |
13387711 SW |
10893 | const char *canonical_name; |
10894 | const char *import_alias; | |
10895 | const char *imported_declaration = NULL; | |
794684b6 | 10896 | const char *import_prefix; |
eb1e02fd | 10897 | std::vector<const char *> excludes; |
13387711 | 10898 | |
27aa8d6a SW |
10899 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10900 | if (import_attr == NULL) | |
10901 | { | |
b98664d3 | 10902 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10903 | dwarf_tag_name (die->tag)); |
10904 | return; | |
10905 | } | |
10906 | ||
de4affc9 CC |
10907 | imported_cu = cu; |
10908 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10909 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10910 | if (imported_name == NULL) |
10911 | { | |
10912 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10913 | ||
10914 | The import in the following code: | |
10915 | namespace A | |
10916 | { | |
10917 | typedef int B; | |
10918 | } | |
10919 | ||
10920 | int main () | |
10921 | { | |
10922 | using A::B; | |
10923 | B b; | |
10924 | return b; | |
10925 | } | |
10926 | ||
10927 | ... | |
10928 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10929 | <52> DW_AT_decl_file : 1 | |
10930 | <53> DW_AT_decl_line : 6 | |
10931 | <54> DW_AT_import : <0x75> | |
10932 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10933 | <59> DW_AT_name : B | |
10934 | <5b> DW_AT_decl_file : 1 | |
10935 | <5c> DW_AT_decl_line : 2 | |
10936 | <5d> DW_AT_type : <0x6e> | |
10937 | ... | |
10938 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10939 | <76> DW_AT_byte_size : 4 | |
10940 | <77> DW_AT_encoding : 5 (signed) | |
10941 | ||
10942 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10943 | This case will be ignored until the gcc bug is fixed. */ | |
10944 | return; | |
10945 | } | |
10946 | ||
82856980 SW |
10947 | /* Figure out the local name after import. */ |
10948 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10949 | |
794684b6 SW |
10950 | /* Figure out where the statement is being imported to. */ |
10951 | import_prefix = determine_prefix (die, cu); | |
10952 | ||
10953 | /* Figure out what the scope of the imported die is and prepend it | |
10954 | to the name of the imported die. */ | |
de4affc9 | 10955 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10956 | |
f55ee35c JK |
10957 | if (imported_die->tag != DW_TAG_namespace |
10958 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10959 | { |
13387711 SW |
10960 | imported_declaration = imported_name; |
10961 | canonical_name = imported_name_prefix; | |
794684b6 | 10962 | } |
13387711 | 10963 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10964 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10965 | imported_name_prefix, |
10966 | (cu->language == language_d ? "." : "::"), | |
10967 | imported_name, (char *) NULL); | |
13387711 SW |
10968 | else |
10969 | canonical_name = imported_name; | |
794684b6 | 10970 | |
32019081 JK |
10971 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10972 | for (child_die = die->child; child_die && child_die->tag; | |
10973 | child_die = sibling_die (child_die)) | |
10974 | { | |
10975 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10976 | represented by an imported module entry with an import attribute | |
10977 | referring to the module and owned entries corresponding to those | |
10978 | entities that are renamed as part of being imported. */ | |
10979 | ||
10980 | if (child_die->tag != DW_TAG_imported_declaration) | |
10981 | { | |
b98664d3 | 10982 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10983 | "- DIE at %s [in module %s]"), |
10984 | sect_offset_str (child_die->sect_off), | |
10985 | objfile_name (objfile)); | |
32019081 JK |
10986 | continue; |
10987 | } | |
10988 | ||
10989 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10990 | if (import_attr == NULL) | |
10991 | { | |
b98664d3 | 10992 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10993 | dwarf_tag_name (child_die->tag)); |
10994 | continue; | |
10995 | } | |
10996 | ||
10997 | imported_cu = cu; | |
10998 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10999 | &imported_cu); | |
11000 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11001 | if (imported_name == NULL) | |
11002 | { | |
b98664d3 | 11003 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11004 | "imported name - DIE at %s [in module %s]"), |
11005 | sect_offset_str (child_die->sect_off), | |
11006 | objfile_name (objfile)); | |
32019081 JK |
11007 | continue; |
11008 | } | |
11009 | ||
eb1e02fd | 11010 | excludes.push_back (imported_name); |
32019081 JK |
11011 | |
11012 | process_die (child_die, cu); | |
11013 | } | |
11014 | ||
804d2729 | 11015 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11016 | import_prefix, |
11017 | canonical_name, | |
11018 | import_alias, | |
11019 | imported_declaration, | |
11020 | excludes, | |
11021 | 0, | |
11022 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11023 | } |
11024 | ||
5230b05a WT |
11025 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11026 | types, but gives them a size of zero. Starting with version 14, | |
11027 | ICC is compatible with GCC. */ | |
11028 | ||
9068261f | 11029 | static bool |
5230b05a WT |
11030 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11031 | { | |
11032 | if (!cu->checked_producer) | |
11033 | check_producer (cu); | |
11034 | ||
11035 | return cu->producer_is_icc_lt_14; | |
11036 | } | |
11037 | ||
eb77c9df AB |
11038 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11039 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11040 | which says that void functions should not have a DW_AT_type. */ | |
11041 | ||
11042 | static bool | |
11043 | producer_is_icc (struct dwarf2_cu *cu) | |
11044 | { | |
11045 | if (!cu->checked_producer) | |
11046 | check_producer (cu); | |
11047 | ||
11048 | return cu->producer_is_icc; | |
11049 | } | |
11050 | ||
1b80a9fa JK |
11051 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11052 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11053 | this, it was first present in GCC release 4.3.0. */ | |
11054 | ||
9068261f | 11055 | static bool |
1b80a9fa JK |
11056 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11057 | { | |
11058 | if (!cu->checked_producer) | |
11059 | check_producer (cu); | |
11060 | ||
11061 | return cu->producer_is_gcc_lt_4_3; | |
11062 | } | |
11063 | ||
d721ba37 PA |
11064 | static file_and_directory |
11065 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11066 | { |
d721ba37 PA |
11067 | file_and_directory res; |
11068 | ||
9291a0cd TT |
11069 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11070 | is not a source language identifier. */ | |
d721ba37 PA |
11071 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11072 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11073 | |
d721ba37 PA |
11074 | if (res.comp_dir == NULL |
11075 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11076 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11077 | { |
d721ba37 PA |
11078 | res.comp_dir_storage = ldirname (res.name); |
11079 | if (!res.comp_dir_storage.empty ()) | |
11080 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11081 | } |
d721ba37 | 11082 | if (res.comp_dir != NULL) |
9291a0cd TT |
11083 | { |
11084 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11085 | directory, get rid of it. */ | |
d721ba37 | 11086 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11087 | |
d721ba37 PA |
11088 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11089 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11090 | } |
11091 | ||
d721ba37 PA |
11092 | if (res.name == NULL) |
11093 | res.name = "<unknown>"; | |
11094 | ||
11095 | return res; | |
9291a0cd TT |
11096 | } |
11097 | ||
f4dc4d17 DE |
11098 | /* Handle DW_AT_stmt_list for a compilation unit. |
11099 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11100 | COMP_DIR is the compilation directory. LOWPC is passed to |
11101 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11102 | |
11103 | static void | |
11104 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11105 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11106 | { |
518817b3 SM |
11107 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11108 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11109 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11110 | struct attribute *attr; |
527f3840 JK |
11111 | struct line_header line_header_local; |
11112 | hashval_t line_header_local_hash; | |
527f3840 JK |
11113 | void **slot; |
11114 | int decode_mapping; | |
2ab95328 | 11115 | |
f4dc4d17 DE |
11116 | gdb_assert (! cu->per_cu->is_debug_types); |
11117 | ||
2ab95328 | 11118 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11119 | if (attr == NULL) |
11120 | return; | |
11121 | ||
9c541725 | 11122 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11123 | |
11124 | /* The line header hash table is only created if needed (it exists to | |
11125 | prevent redundant reading of the line table for partial_units). | |
11126 | If we're given a partial_unit, we'll need it. If we're given a | |
11127 | compile_unit, then use the line header hash table if it's already | |
11128 | created, but don't create one just yet. */ | |
11129 | ||
11130 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11131 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11132 | { |
527f3840 JK |
11133 | dwarf2_per_objfile->line_header_hash |
11134 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11135 | line_header_eq_voidp, | |
11136 | free_line_header_voidp, | |
11137 | &objfile->objfile_obstack, | |
11138 | hashtab_obstack_allocate, | |
11139 | dummy_obstack_deallocate); | |
11140 | } | |
2ab95328 | 11141 | |
9c541725 | 11142 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11143 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11144 | line_header_local_hash = line_header_hash (&line_header_local); | |
11145 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11146 | { | |
11147 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11148 | &line_header_local, | |
11149 | line_header_local_hash, NO_INSERT); | |
11150 | ||
11151 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11152 | is not present in *SLOT (since if there is something in *SLOT then | |
11153 | it will be for a partial_unit). */ | |
11154 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11155 | { |
527f3840 | 11156 | gdb_assert (*slot != NULL); |
9a3c8263 | 11157 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11158 | return; |
dee91e82 | 11159 | } |
2ab95328 | 11160 | } |
527f3840 JK |
11161 | |
11162 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11163 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11164 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11165 | if (lh == NULL) | |
527f3840 | 11166 | return; |
4c8aa72d PA |
11167 | |
11168 | cu->line_header = lh.release (); | |
11169 | cu->line_header_die_owner = die; | |
527f3840 JK |
11170 | |
11171 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11172 | slot = NULL; | |
11173 | else | |
11174 | { | |
11175 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11176 | &line_header_local, | |
11177 | line_header_local_hash, INSERT); | |
11178 | gdb_assert (slot != NULL); | |
11179 | } | |
11180 | if (slot != NULL && *slot == NULL) | |
11181 | { | |
11182 | /* This newly decoded line number information unit will be owned | |
11183 | by line_header_hash hash table. */ | |
11184 | *slot = cu->line_header; | |
4c8aa72d | 11185 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11186 | } |
11187 | else | |
11188 | { | |
11189 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11190 | may be already used by multiple CUs. Create only temporary decoded | |
11191 | line_header for this CU - it may happen at most once for each line | |
11192 | number information unit. And if we're not using line_header_hash | |
11193 | then this is what we want as well. */ | |
11194 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11195 | } |
11196 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11197 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11198 | decode_mapping); | |
fff8551c | 11199 | |
2ab95328 TT |
11200 | } |
11201 | ||
95554aad | 11202 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11203 | |
c906108c | 11204 | static void |
e7c27a73 | 11205 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11206 | { |
518817b3 SM |
11207 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11208 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11209 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11210 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11211 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11212 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11213 | struct attribute *attr; | |
c906108c | 11214 | struct die_info *child_die; |
e142c38c | 11215 | CORE_ADDR baseaddr; |
6e70227d | 11216 | |
380618d6 | 11217 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11218 | baseaddr = objfile->text_section_offset (); |
c906108c | 11219 | |
fae299cd | 11220 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11221 | |
11222 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11223 | from finish_block. */ | |
2acceee2 | 11224 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11225 | lowpc = highpc; |
3e29f34a | 11226 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11227 | |
d721ba37 | 11228 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11229 | |
f4b8a18d KW |
11230 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11231 | standardised yet. As a workaround for the language detection we fall | |
11232 | back to the DW_AT_producer string. */ | |
11233 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11234 | cu->language = language_opencl; | |
11235 | ||
3019eac3 DE |
11236 | /* Similar hack for Go. */ |
11237 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11238 | set_cu_language (DW_LANG_Go, cu); | |
11239 | ||
c24bdb02 | 11240 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11241 | |
11242 | /* Decode line number information if present. We do this before | |
11243 | processing child DIEs, so that the line header table is available | |
11244 | for DW_AT_decl_file. */ | |
d721ba37 | 11245 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11246 | |
11247 | /* Process all dies in compilation unit. */ | |
11248 | if (die->child != NULL) | |
11249 | { | |
11250 | child_die = die->child; | |
11251 | while (child_die && child_die->tag) | |
11252 | { | |
11253 | process_die (child_die, cu); | |
11254 | child_die = sibling_die (child_die); | |
11255 | } | |
11256 | } | |
11257 | ||
11258 | /* Decode macro information, if present. Dwarf 2 macro information | |
11259 | refers to information in the line number info statement program | |
11260 | header, so we can only read it if we've read the header | |
11261 | successfully. */ | |
0af92d60 JK |
11262 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11263 | if (attr == NULL) | |
11264 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11265 | if (attr && cu->line_header) |
11266 | { | |
11267 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11268 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11269 | |
43f3e411 | 11270 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11271 | } |
11272 | else | |
11273 | { | |
11274 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11275 | if (attr && cu->line_header) | |
11276 | { | |
11277 | unsigned int macro_offset = DW_UNSND (attr); | |
11278 | ||
43f3e411 | 11279 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11280 | } |
11281 | } | |
3019eac3 DE |
11282 | } |
11283 | ||
c24bdb02 KS |
11284 | void |
11285 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11286 | { |
f4dc4d17 DE |
11287 | struct type_unit_group *tu_group; |
11288 | int first_time; | |
3019eac3 | 11289 | struct attribute *attr; |
9c541725 | 11290 | unsigned int i; |
0186c6a7 | 11291 | struct signatured_type *sig_type; |
3019eac3 | 11292 | |
f4dc4d17 | 11293 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11294 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11295 | |
c24bdb02 | 11296 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11297 | |
f4dc4d17 | 11298 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11299 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11300 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11301 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11302 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11303 | |
11304 | /* If we've already processed this stmt_list there's no real need to | |
11305 | do it again, we could fake it and just recreate the part we need | |
11306 | (file name,index -> symtab mapping). If data shows this optimization | |
11307 | is useful we can do it then. */ | |
43f3e411 | 11308 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11309 | |
11310 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11311 | debug info. */ | |
fff8551c | 11312 | line_header_up lh; |
f4dc4d17 | 11313 | if (attr != NULL) |
3019eac3 | 11314 | { |
9c541725 | 11315 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11316 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11317 | } |
11318 | if (lh == NULL) | |
11319 | { | |
11320 | if (first_time) | |
c24bdb02 | 11321 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11322 | else |
11323 | { | |
11324 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11325 | gdb_assert (m_builder == nullptr); |
804d2729 | 11326 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11327 | m_builder.reset (new struct buildsym_compunit |
11328 | (COMPUNIT_OBJFILE (cust), "", | |
11329 | COMPUNIT_DIRNAME (cust), | |
11330 | compunit_language (cust), | |
11331 | 0, cust)); | |
f4dc4d17 | 11332 | } |
f4dc4d17 | 11333 | return; |
3019eac3 DE |
11334 | } |
11335 | ||
c24bdb02 KS |
11336 | line_header = lh.release (); |
11337 | line_header_die_owner = die; | |
3019eac3 | 11338 | |
f4dc4d17 DE |
11339 | if (first_time) |
11340 | { | |
c24bdb02 | 11341 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11342 | |
1fd60fc0 DE |
11343 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11344 | still initializing it, and our caller (a few levels up) | |
11345 | process_full_type_unit still needs to know if this is the first | |
11346 | time. */ | |
11347 | ||
7ba99d21 | 11348 | tu_group->num_symtabs = line_header->file_names_size (); |
4c8aa72d | 11349 | tu_group->symtabs = XNEWVEC (struct symtab *, |
7ba99d21 | 11350 | line_header->file_names_size ()); |
3019eac3 | 11351 | |
7ba99d21 AT |
11352 | auto &file_names = line_header->file_names (); |
11353 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11354 | { |
7ba99d21 | 11355 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11356 | dwarf2_start_subfile (this, fe.name, |
11357 | fe.include_dir (line_header)); | |
11358 | buildsym_compunit *b = get_builder (); | |
11359 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11360 | { |
4c8aa72d PA |
11361 | /* NOTE: start_subfile will recognize when it's been |
11362 | passed a file it has already seen. So we can't | |
11363 | assume there's a simple mapping from | |
11364 | cu->line_header->file_names to subfiles, plus | |
11365 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11366 | b->get_current_subfile ()->symtab |
11367 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11368 | } |
11369 | ||
c24bdb02 | 11370 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11371 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11372 | } |
11373 | } | |
11374 | else | |
3019eac3 | 11375 | { |
c24bdb02 | 11376 | gdb_assert (m_builder == nullptr); |
804d2729 | 11377 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11378 | m_builder.reset (new struct buildsym_compunit |
11379 | (COMPUNIT_OBJFILE (cust), "", | |
11380 | COMPUNIT_DIRNAME (cust), | |
11381 | compunit_language (cust), | |
11382 | 0, cust)); | |
f4dc4d17 | 11383 | |
7ba99d21 AT |
11384 | auto &file_names = line_header->file_names (); |
11385 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11386 | { |
7ba99d21 | 11387 | file_entry &fe = file_names[i]; |
4c8aa72d | 11388 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11389 | } |
3019eac3 DE |
11390 | } |
11391 | ||
f4dc4d17 DE |
11392 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11393 | so they don't have a "real" (so to speak) symtab anyway. | |
11394 | There is later code that will assign the main symtab to all symbols | |
11395 | that don't have one. We need to handle the case of a symbol with a | |
11396 | missing symtab (DW_AT_decl_file) anyway. */ | |
11397 | } | |
3019eac3 | 11398 | |
f4dc4d17 DE |
11399 | /* Process DW_TAG_type_unit. |
11400 | For TUs we want to skip the first top level sibling if it's not the | |
11401 | actual type being defined by this TU. In this case the first top | |
11402 | level sibling is there to provide context only. */ | |
3019eac3 | 11403 | |
f4dc4d17 DE |
11404 | static void |
11405 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11406 | { | |
11407 | struct die_info *child_die; | |
3019eac3 | 11408 | |
f4dc4d17 DE |
11409 | prepare_one_comp_unit (cu, die, language_minimal); |
11410 | ||
11411 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11412 | We do this before processing child DIEs, so that the line header table | |
11413 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11414 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11415 | |
11416 | if (die->child != NULL) | |
11417 | { | |
11418 | child_die = die->child; | |
11419 | while (child_die && child_die->tag) | |
11420 | { | |
11421 | process_die (child_die, cu); | |
11422 | child_die = sibling_die (child_die); | |
11423 | } | |
11424 | } | |
3019eac3 DE |
11425 | } |
11426 | \f | |
80626a55 DE |
11427 | /* DWO/DWP files. |
11428 | ||
11429 | http://gcc.gnu.org/wiki/DebugFission | |
11430 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11431 | ||
11432 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11433 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11434 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11435 | |
11436 | static hashval_t | |
11437 | hash_dwo_file (const void *item) | |
11438 | { | |
9a3c8263 | 11439 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11440 | hashval_t hash; |
3019eac3 | 11441 | |
a2ce51a0 DE |
11442 | hash = htab_hash_string (dwo_file->dwo_name); |
11443 | if (dwo_file->comp_dir != NULL) | |
11444 | hash += htab_hash_string (dwo_file->comp_dir); | |
11445 | return hash; | |
3019eac3 DE |
11446 | } |
11447 | ||
11448 | static int | |
11449 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11450 | { | |
9a3c8263 SM |
11451 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11452 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11453 | |
a2ce51a0 DE |
11454 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11455 | return 0; | |
11456 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11457 | return lhs->comp_dir == rhs->comp_dir; | |
11458 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11459 | } |
11460 | ||
11461 | /* Allocate a hash table for DWO files. */ | |
11462 | ||
51ac9db5 | 11463 | static htab_up |
ed2dc618 | 11464 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11465 | { |
51ac9db5 SM |
11466 | auto delete_dwo_file = [] (void *item) |
11467 | { | |
11468 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11469 | ||
11470 | delete dwo_file; | |
11471 | }; | |
11472 | ||
11473 | return htab_up (htab_create_alloc_ex (41, | |
11474 | hash_dwo_file, | |
11475 | eq_dwo_file, | |
11476 | delete_dwo_file, | |
11477 | &objfile->objfile_obstack, | |
11478 | hashtab_obstack_allocate, | |
11479 | dummy_obstack_deallocate)); | |
3019eac3 DE |
11480 | } |
11481 | ||
80626a55 DE |
11482 | /* Lookup DWO file DWO_NAME. */ |
11483 | ||
11484 | static void ** | |
ed2dc618 SM |
11485 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11486 | const char *dwo_name, | |
11487 | const char *comp_dir) | |
80626a55 DE |
11488 | { |
11489 | struct dwo_file find_entry; | |
11490 | void **slot; | |
11491 | ||
11492 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11493 | dwarf2_per_objfile->dwo_files |
11494 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 | 11495 | |
0ac5b59e DE |
11496 | find_entry.dwo_name = dwo_name; |
11497 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11498 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11499 | INSERT); | |
80626a55 DE |
11500 | |
11501 | return slot; | |
11502 | } | |
11503 | ||
3019eac3 DE |
11504 | static hashval_t |
11505 | hash_dwo_unit (const void *item) | |
11506 | { | |
9a3c8263 | 11507 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11508 | |
11509 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11510 | return dwo_unit->signature; | |
11511 | } | |
11512 | ||
11513 | static int | |
11514 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11515 | { | |
9a3c8263 SM |
11516 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11517 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11518 | |
11519 | /* The signature is assumed to be unique within the DWO file. | |
11520 | So while object file CU dwo_id's always have the value zero, | |
11521 | that's OK, assuming each object file DWO file has only one CU, | |
11522 | and that's the rule for now. */ | |
11523 | return lhs->signature == rhs->signature; | |
11524 | } | |
11525 | ||
11526 | /* Allocate a hash table for DWO CUs,TUs. | |
11527 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11528 | ||
11529 | static htab_t | |
11530 | allocate_dwo_unit_table (struct objfile *objfile) | |
11531 | { | |
11532 | /* Start out with a pretty small number. | |
11533 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11534 | return htab_create_alloc_ex (3, | |
11535 | hash_dwo_unit, | |
11536 | eq_dwo_unit, | |
11537 | NULL, | |
11538 | &objfile->objfile_obstack, | |
11539 | hashtab_obstack_allocate, | |
11540 | dummy_obstack_deallocate); | |
11541 | } | |
11542 | ||
19c3d4c9 | 11543 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11544 | |
11545 | static void | |
19c3d4c9 DE |
11546 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11547 | const gdb_byte *info_ptr, | |
11548 | struct die_info *comp_unit_die, | |
11549 | int has_children, | |
c0ab21c2 TT |
11550 | struct dwo_file *dwo_file, |
11551 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11552 | { |
11553 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11554 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11555 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11556 | |
a084a2a6 AT |
11557 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11558 | if (!signature.has_value ()) | |
3019eac3 | 11559 | { |
b98664d3 | 11560 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11561 | " its dwo_id [in module %s]"), |
9d8780f0 | 11562 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11563 | return; |
11564 | } | |
11565 | ||
3019eac3 | 11566 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11567 | dwo_unit->signature = *signature; |
8a0459fd | 11568 | dwo_unit->section = section; |
9c541725 | 11569 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11570 | dwo_unit->length = cu->per_cu->length; |
11571 | ||
b4f54984 | 11572 | if (dwarf_read_debug) |
9d8780f0 SM |
11573 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11574 | sect_offset_str (sect_off), | |
9c541725 | 11575 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11576 | } |
11577 | ||
33c5cd75 | 11578 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11579 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11580 | |
33c5cd75 | 11581 | static void |
ed2dc618 | 11582 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
11583 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
11584 | dwarf2_section_info §ion, htab_t &cus_htab) | |
3019eac3 DE |
11585 | { |
11586 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11587 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11588 | |
96b79293 | 11589 | section.read (objfile); |
33c5cd75 | 11590 | info_ptr = section.buffer; |
3019eac3 DE |
11591 | |
11592 | if (info_ptr == NULL) | |
33c5cd75 | 11593 | return; |
3019eac3 | 11594 | |
b4f54984 | 11595 | if (dwarf_read_debug) |
19c3d4c9 DE |
11596 | { |
11597 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11598 | section.get_name (), |
11599 | section.get_file_name ()); | |
19c3d4c9 | 11600 | } |
3019eac3 | 11601 | |
33c5cd75 | 11602 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11603 | while (info_ptr < end_ptr) |
11604 | { | |
11605 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11606 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11607 | struct dwo_unit *dwo_unit; |
11608 | void **slot; | |
11609 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11610 | |
11611 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11612 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11613 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11614 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11615 | per_cu.section = §ion; | |
11616 | ||
c0ab21c2 TT |
11617 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11618 | if (!reader.dummy_p) | |
11619 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
11620 | reader.has_children, &dwo_file, &read_unit); | |
33c5cd75 DB |
11621 | info_ptr += per_cu.length; |
11622 | ||
11623 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11624 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11625 | continue; |
3019eac3 | 11626 | |
33c5cd75 DB |
11627 | if (cus_htab == NULL) |
11628 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11629 | |
33c5cd75 | 11630 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11631 | *dwo_unit = read_unit; |
33c5cd75 DB |
11632 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); |
11633 | gdb_assert (slot != NULL); | |
11634 | if (*slot != NULL) | |
19c3d4c9 | 11635 | { |
33c5cd75 DB |
11636 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11637 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11638 | |
b98664d3 | 11639 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11640 | " the entry at offset %s, signature %s"), |
11641 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11642 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11643 | } |
33c5cd75 | 11644 | *slot = (void *)dwo_unit; |
3019eac3 | 11645 | } |
3019eac3 DE |
11646 | } |
11647 | ||
80626a55 DE |
11648 | /* DWP file .debug_{cu,tu}_index section format: |
11649 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11650 | ||
d2415c6c DE |
11651 | DWP Version 1: |
11652 | ||
80626a55 DE |
11653 | Both index sections have the same format, and serve to map a 64-bit |
11654 | signature to a set of section numbers. Each section begins with a header, | |
11655 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11656 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11657 | aligned at 8-byte boundaries in the file. | |
11658 | ||
d2415c6c DE |
11659 | The index section header consists of: |
11660 | ||
11661 | V, 32 bit version number | |
11662 | -, 32 bits unused | |
11663 | N, 32 bit number of compilation units or type units in the index | |
11664 | M, 32 bit number of slots in the hash table | |
80626a55 | 11665 | |
d2415c6c | 11666 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11667 | |
d2415c6c DE |
11668 | The hash table begins at offset 16 in the section, and consists of an array |
11669 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11670 | order of the application binary). Unused slots in the hash table are 0. | |
11671 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11672 | |
d2415c6c DE |
11673 | The parallel table begins immediately after the hash table |
11674 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11675 | array of 32-bit indexes (using the byte order of the application binary), | |
11676 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11677 | table contains a 32-bit index into the pool of section numbers. For unused | |
11678 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11679 | |
73869dc2 DE |
11680 | The pool of section numbers begins immediately following the hash table |
11681 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11682 | section numbers consists of an array of 32-bit words (using the byte order | |
11683 | of the application binary). Each item in the array is indexed starting | |
11684 | from 0. The hash table entry provides the index of the first section | |
11685 | number in the set. Additional section numbers in the set follow, and the | |
11686 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11687 | ||
11688 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11689 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11690 | be the second entry. Other members of the set may follow in any order. | |
11691 | ||
11692 | --- | |
11693 | ||
11694 | DWP Version 2: | |
11695 | ||
11696 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11697 | and the entries in the index tables are now offsets into these sections. | |
11698 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11699 | section. | |
11700 | ||
11701 | Index Section Contents: | |
11702 | Header | |
11703 | Hash Table of Signatures dwp_hash_table.hash_table | |
11704 | Parallel Table of Indices dwp_hash_table.unit_table | |
11705 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11706 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11707 | ||
11708 | The index section header consists of: | |
11709 | ||
11710 | V, 32 bit version number | |
11711 | L, 32 bit number of columns in the table of section offsets | |
11712 | N, 32 bit number of compilation units or type units in the index | |
11713 | M, 32 bit number of slots in the hash table | |
11714 | ||
11715 | Numbers are recorded using the byte order of the application binary. | |
11716 | ||
11717 | The hash table has the same format as version 1. | |
11718 | The parallel table of indices has the same format as version 1, | |
11719 | except that the entries are origin-1 indices into the table of sections | |
11720 | offsets and the table of section sizes. | |
11721 | ||
11722 | The table of offsets begins immediately following the parallel table | |
11723 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11724 | a two-dimensional array of 32-bit words (using the byte order of the | |
11725 | application binary), with L columns and N+1 rows, in row-major order. | |
11726 | Each row in the array is indexed starting from 0. The first row provides | |
11727 | a key to the remaining rows: each column in this row provides an identifier | |
11728 | for a debug section, and the offsets in the same column of subsequent rows | |
11729 | refer to that section. The section identifiers are: | |
11730 | ||
11731 | DW_SECT_INFO 1 .debug_info.dwo | |
11732 | DW_SECT_TYPES 2 .debug_types.dwo | |
11733 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11734 | DW_SECT_LINE 4 .debug_line.dwo | |
11735 | DW_SECT_LOC 5 .debug_loc.dwo | |
11736 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11737 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11738 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11739 | ||
11740 | The offsets provided by the CU and TU index sections are the base offsets | |
11741 | for the contributions made by each CU or TU to the corresponding section | |
11742 | in the package file. Each CU and TU header contains an abbrev_offset | |
11743 | field, used to find the abbreviations table for that CU or TU within the | |
11744 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11745 | be interpreted as relative to the base offset given in the index section. | |
11746 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11747 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11748 | and offsets into other debug sections obtained from DWARF attributes should | |
11749 | also be interpreted as relative to the corresponding base offset. | |
11750 | ||
11751 | The table of sizes begins immediately following the table of offsets. | |
11752 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11753 | with L columns and N rows, in row-major order. Each row in the array is | |
11754 | indexed starting from 1 (row 0 is shared by the two tables). | |
11755 | ||
11756 | --- | |
11757 | ||
11758 | Hash table lookup is handled the same in version 1 and 2: | |
11759 | ||
11760 | We assume that N and M will not exceed 2^32 - 1. | |
11761 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11762 | ||
d2415c6c DE |
11763 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11764 | in the hash table is located as follows: | |
80626a55 | 11765 | |
d2415c6c DE |
11766 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11767 | the low-order k bits all set to 1. | |
80626a55 | 11768 | |
d2415c6c | 11769 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11770 | |
d2415c6c DE |
11771 | 3) If the hash table entry at index H matches the signature, use that |
11772 | entry. If the hash table entry at index H is unused (all zeroes), | |
11773 | terminate the search: the signature is not present in the table. | |
80626a55 | 11774 | |
d2415c6c | 11775 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11776 | |
d2415c6c | 11777 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11778 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11779 | |
11780 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11781 | .debug_{info,types}.dwo in DWP_FILE. | |
11782 | Returns NULL if there isn't one. | |
11783 | Note: This function processes DWP files only, not DWO files. */ | |
11784 | ||
11785 | static struct dwp_hash_table * | |
ed2dc618 SM |
11786 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11787 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11788 | { |
11789 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11790 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11791 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11792 | struct dwarf2_section_info *index; |
73869dc2 | 11793 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11794 | struct dwp_hash_table *htab; |
11795 | ||
11796 | if (is_debug_types) | |
11797 | index = &dwp_file->sections.tu_index; | |
11798 | else | |
11799 | index = &dwp_file->sections.cu_index; | |
11800 | ||
96b79293 | 11801 | if (index->empty ()) |
80626a55 | 11802 | return NULL; |
96b79293 | 11803 | index->read (objfile); |
80626a55 DE |
11804 | |
11805 | index_ptr = index->buffer; | |
11806 | index_end = index_ptr + index->size; | |
11807 | ||
11808 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11809 | index_ptr += 4; |
11810 | if (version == 2) | |
11811 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11812 | else | |
11813 | nr_columns = 0; | |
11814 | index_ptr += 4; | |
80626a55 DE |
11815 | nr_units = read_4_bytes (dbfd, index_ptr); |
11816 | index_ptr += 4; | |
11817 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11818 | index_ptr += 4; | |
11819 | ||
73869dc2 | 11820 | if (version != 1 && version != 2) |
80626a55 | 11821 | { |
21aa081e | 11822 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11823 | " [in module %s]"), |
21aa081e | 11824 | pulongest (version), dwp_file->name); |
80626a55 DE |
11825 | } |
11826 | if (nr_slots != (nr_slots & -nr_slots)) | |
11827 | { | |
21aa081e | 11828 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11829 | " is not power of 2 [in module %s]"), |
21aa081e | 11830 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11831 | } |
11832 | ||
11833 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11834 | htab->version = version; |
11835 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11836 | htab->nr_units = nr_units; |
11837 | htab->nr_slots = nr_slots; | |
11838 | htab->hash_table = index_ptr; | |
11839 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11840 | |
11841 | /* Exit early if the table is empty. */ | |
11842 | if (nr_slots == 0 || nr_units == 0 | |
11843 | || (version == 2 && nr_columns == 0)) | |
11844 | { | |
11845 | /* All must be zero. */ | |
11846 | if (nr_slots != 0 || nr_units != 0 | |
11847 | || (version == 2 && nr_columns != 0)) | |
11848 | { | |
b98664d3 | 11849 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11850 | " all zero [in modules %s]"), |
11851 | dwp_file->name); | |
11852 | } | |
11853 | return htab; | |
11854 | } | |
11855 | ||
11856 | if (version == 1) | |
11857 | { | |
11858 | htab->section_pool.v1.indices = | |
11859 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11860 | /* It's harder to decide whether the section is too small in v1. | |
11861 | V1 is deprecated anyway so we punt. */ | |
11862 | } | |
11863 | else | |
11864 | { | |
11865 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11866 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11867 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11868 | /* Reverse map for error checking. */ |
11869 | int ids_seen[DW_SECT_MAX + 1]; | |
11870 | int i; | |
11871 | ||
11872 | if (nr_columns < 2) | |
11873 | { | |
11874 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11875 | " in section table [in module %s]"), | |
11876 | dwp_file->name); | |
11877 | } | |
11878 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11879 | { | |
11880 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11881 | " in section table [in module %s]"), | |
11882 | dwp_file->name); | |
11883 | } | |
04fd5eed GB |
11884 | memset (ids, 255, sizeof_ids); |
11885 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11886 | for (i = 0; i < nr_columns; ++i) |
11887 | { | |
11888 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11889 | ||
11890 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11891 | { | |
11892 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11893 | " in section table [in module %s]"), | |
11894 | id, dwp_file->name); | |
11895 | } | |
11896 | if (ids_seen[id] != -1) | |
11897 | { | |
11898 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11899 | " id %d in section table [in module %s]"), | |
11900 | id, dwp_file->name); | |
11901 | } | |
11902 | ids_seen[id] = i; | |
11903 | ids[i] = id; | |
11904 | } | |
11905 | /* Must have exactly one info or types section. */ | |
11906 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11907 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11908 | != 1) | |
11909 | { | |
11910 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11911 | " DWO info/types section [in module %s]"), | |
11912 | dwp_file->name); | |
11913 | } | |
11914 | /* Must have an abbrev section. */ | |
11915 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11916 | { | |
11917 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11918 | " section [in module %s]"), | |
11919 | dwp_file->name); | |
11920 | } | |
11921 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11922 | htab->section_pool.v2.sizes = | |
11923 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11924 | * nr_units * nr_columns); | |
11925 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11926 | * nr_units * nr_columns)) | |
11927 | > index_end) | |
11928 | { | |
11929 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11930 | " [in module %s]"), | |
11931 | dwp_file->name); | |
11932 | } | |
11933 | } | |
80626a55 DE |
11934 | |
11935 | return htab; | |
11936 | } | |
11937 | ||
11938 | /* Update SECTIONS with the data from SECTP. | |
11939 | ||
11940 | This function is like the other "locate" section routines that are | |
11941 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11942 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11943 | |
11944 | The result is non-zero for success, or zero if an error was found. */ | |
11945 | ||
11946 | static int | |
73869dc2 DE |
11947 | locate_v1_virtual_dwo_sections (asection *sectp, |
11948 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11949 | { |
11950 | const struct dwop_section_names *names = &dwop_section_names; | |
11951 | ||
11952 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11953 | { | |
11954 | /* There can be only one. */ | |
049412e3 | 11955 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11956 | return 0; |
049412e3 | 11957 | sections->abbrev.s.section = sectp; |
fd361982 | 11958 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11959 | } |
11960 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11961 | || section_is_p (sectp->name, &names->types_dwo)) | |
11962 | { | |
11963 | /* There can be only one. */ | |
049412e3 | 11964 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11965 | return 0; |
049412e3 | 11966 | sections->info_or_types.s.section = sectp; |
fd361982 | 11967 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11968 | } |
11969 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11970 | { | |
11971 | /* There can be only one. */ | |
049412e3 | 11972 | if (sections->line.s.section != NULL) |
80626a55 | 11973 | return 0; |
049412e3 | 11974 | sections->line.s.section = sectp; |
fd361982 | 11975 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11976 | } |
11977 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11978 | { | |
11979 | /* There can be only one. */ | |
049412e3 | 11980 | if (sections->loc.s.section != NULL) |
80626a55 | 11981 | return 0; |
049412e3 | 11982 | sections->loc.s.section = sectp; |
fd361982 | 11983 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11984 | } |
11985 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11986 | { | |
11987 | /* There can be only one. */ | |
049412e3 | 11988 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11989 | return 0; |
049412e3 | 11990 | sections->macinfo.s.section = sectp; |
fd361982 | 11991 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11992 | } |
11993 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11994 | { | |
11995 | /* There can be only one. */ | |
049412e3 | 11996 | if (sections->macro.s.section != NULL) |
80626a55 | 11997 | return 0; |
049412e3 | 11998 | sections->macro.s.section = sectp; |
fd361982 | 11999 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12000 | } |
12001 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12002 | { | |
12003 | /* There can be only one. */ | |
049412e3 | 12004 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12005 | return 0; |
049412e3 | 12006 | sections->str_offsets.s.section = sectp; |
fd361982 | 12007 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12008 | } |
12009 | else | |
12010 | { | |
12011 | /* No other kind of section is valid. */ | |
12012 | return 0; | |
12013 | } | |
12014 | ||
12015 | return 1; | |
12016 | } | |
12017 | ||
73869dc2 DE |
12018 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12019 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12020 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12021 | This is for DWP version 1 files. */ | |
80626a55 DE |
12022 | |
12023 | static struct dwo_unit * | |
ed2dc618 SM |
12024 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12025 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12026 | uint32_t unit_index, |
12027 | const char *comp_dir, | |
12028 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12029 | { |
12030 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12031 | const struct dwp_hash_table *dwp_htab = |
12032 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12033 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12034 | const char *kind = is_debug_types ? "TU" : "CU"; |
12035 | struct dwo_file *dwo_file; | |
12036 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12037 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12038 | void **dwo_file_slot; |
80626a55 DE |
12039 | int i; |
12040 | ||
73869dc2 DE |
12041 | gdb_assert (dwp_file->version == 1); |
12042 | ||
b4f54984 | 12043 | if (dwarf_read_debug) |
80626a55 | 12044 | { |
73869dc2 | 12045 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12046 | kind, |
73869dc2 | 12047 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12048 | dwp_file->name); |
12049 | } | |
12050 | ||
19ac8c2e | 12051 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12052 | Put a limit on the number of sections we look for so that bad data |
12053 | doesn't cause us to loop forever. */ | |
12054 | ||
73869dc2 | 12055 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12056 | (1 /* .debug_info or .debug_types */ \ |
12057 | + 1 /* .debug_abbrev */ \ | |
12058 | + 1 /* .debug_line */ \ | |
12059 | + 1 /* .debug_loc */ \ | |
12060 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12061 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12062 | + 1 /* trailing zero */) |
12063 | ||
12064 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12065 | |
73869dc2 | 12066 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12067 | { |
12068 | asection *sectp; | |
12069 | uint32_t section_nr = | |
12070 | read_4_bytes (dbfd, | |
73869dc2 DE |
12071 | dwp_htab->section_pool.v1.indices |
12072 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12073 | |
12074 | if (section_nr == 0) | |
12075 | break; | |
12076 | if (section_nr >= dwp_file->num_sections) | |
12077 | { | |
12078 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12079 | " [in module %s]"), | |
12080 | dwp_file->name); | |
12081 | } | |
12082 | ||
12083 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12084 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12085 | { |
12086 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12087 | " [in module %s]"), | |
12088 | dwp_file->name); | |
12089 | } | |
12090 | } | |
12091 | ||
12092 | if (i < 2 | |
96b79293 TT |
12093 | || sections.info_or_types.empty () |
12094 | || sections.abbrev.empty ()) | |
80626a55 DE |
12095 | { |
12096 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12097 | " [in module %s]"), | |
12098 | dwp_file->name); | |
12099 | } | |
73869dc2 | 12100 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12101 | { |
12102 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12103 | " [in module %s]"), | |
12104 | dwp_file->name); | |
12105 | } | |
12106 | ||
12107 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12108 | have dwo_unit "live" in that. At least for now. | |
12109 | ||
12110 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12111 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12112 | file, we can combine them back into a virtual DWO file to save space |
12113 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12114 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12115 | ||
791afaa2 TT |
12116 | std::string virtual_dwo_name = |
12117 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12118 | sections.abbrev.get_id (), |
12119 | sections.line.get_id (), | |
12120 | sections.loc.get_id (), | |
12121 | sections.str_offsets.get_id ()); | |
80626a55 | 12122 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12123 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12124 | virtual_dwo_name.c_str (), | |
12125 | comp_dir); | |
80626a55 DE |
12126 | /* Create one if necessary. */ |
12127 | if (*dwo_file_slot == NULL) | |
12128 | { | |
b4f54984 | 12129 | if (dwarf_read_debug) |
80626a55 DE |
12130 | { |
12131 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12132 | virtual_dwo_name.c_str ()); |
80626a55 | 12133 | } |
51ac9db5 | 12134 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12135 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12136 | virtual_dwo_name); | |
0ac5b59e | 12137 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12138 | dwo_file->sections.abbrev = sections.abbrev; |
12139 | dwo_file->sections.line = sections.line; | |
12140 | dwo_file->sections.loc = sections.loc; | |
12141 | dwo_file->sections.macinfo = sections.macinfo; | |
12142 | dwo_file->sections.macro = sections.macro; | |
12143 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12144 | /* The "str" section is global to the entire DWP file. */ | |
12145 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12146 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12147 | there's no need to record it in dwo_file. |
12148 | Also, we can't simply record type sections in dwo_file because | |
12149 | we record a pointer into the vector in dwo_unit. As we collect more | |
12150 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12151 | for it, invalidating all copies of pointers into the previous |
12152 | contents. */ | |
80626a55 DE |
12153 | *dwo_file_slot = dwo_file; |
12154 | } | |
12155 | else | |
12156 | { | |
b4f54984 | 12157 | if (dwarf_read_debug) |
80626a55 DE |
12158 | { |
12159 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12160 | virtual_dwo_name.c_str ()); |
80626a55 | 12161 | } |
9a3c8263 | 12162 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12163 | } |
80626a55 DE |
12164 | |
12165 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12166 | dwo_unit->dwo_file = dwo_file; | |
12167 | dwo_unit->signature = signature; | |
8d749320 SM |
12168 | dwo_unit->section = |
12169 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12170 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12171 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12172 | |
12173 | return dwo_unit; | |
12174 | } | |
12175 | ||
73869dc2 DE |
12176 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12177 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12178 | piece within that section used by a TU/CU, return a virtual section | |
12179 | of just that piece. */ | |
12180 | ||
12181 | static struct dwarf2_section_info | |
ed2dc618 SM |
12182 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12183 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12184 | bfd_size_type offset, bfd_size_type size) |
12185 | { | |
12186 | struct dwarf2_section_info result; | |
12187 | asection *sectp; | |
12188 | ||
12189 | gdb_assert (section != NULL); | |
12190 | gdb_assert (!section->is_virtual); | |
12191 | ||
12192 | memset (&result, 0, sizeof (result)); | |
12193 | result.s.containing_section = section; | |
dc4ccb6f | 12194 | result.is_virtual = true; |
73869dc2 DE |
12195 | |
12196 | if (size == 0) | |
12197 | return result; | |
12198 | ||
96b79293 | 12199 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12200 | |
12201 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12202 | bounds of the real section. This is a pretty-rare event, so just | |
12203 | flag an error (easier) instead of a warning and trying to cope. */ | |
12204 | if (sectp == NULL | |
fd361982 | 12205 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12206 | { |
73869dc2 DE |
12207 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12208 | " in section %s [in module %s]"), | |
fd361982 | 12209 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
12210 | objfile_name (dwarf2_per_objfile->objfile)); |
12211 | } | |
12212 | ||
12213 | result.virtual_offset = offset; | |
12214 | result.size = size; | |
12215 | return result; | |
12216 | } | |
12217 | ||
12218 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12219 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12220 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12221 | This is for DWP version 2 files. */ | |
12222 | ||
12223 | static struct dwo_unit * | |
ed2dc618 SM |
12224 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12225 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12226 | uint32_t unit_index, |
12227 | const char *comp_dir, | |
12228 | ULONGEST signature, int is_debug_types) | |
12229 | { | |
12230 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12231 | const struct dwp_hash_table *dwp_htab = | |
12232 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12233 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12234 | const char *kind = is_debug_types ? "TU" : "CU"; |
12235 | struct dwo_file *dwo_file; | |
12236 | struct dwo_unit *dwo_unit; | |
12237 | struct virtual_v2_dwo_sections sections; | |
12238 | void **dwo_file_slot; | |
73869dc2 DE |
12239 | int i; |
12240 | ||
12241 | gdb_assert (dwp_file->version == 2); | |
12242 | ||
b4f54984 | 12243 | if (dwarf_read_debug) |
73869dc2 DE |
12244 | { |
12245 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12246 | kind, | |
12247 | pulongest (unit_index), hex_string (signature), | |
12248 | dwp_file->name); | |
12249 | } | |
12250 | ||
12251 | /* Fetch the section offsets of this DWO unit. */ | |
12252 | ||
12253 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12254 | |
12255 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12256 | { | |
12257 | uint32_t offset = read_4_bytes (dbfd, | |
12258 | dwp_htab->section_pool.v2.offsets | |
12259 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12260 | + i) | |
12261 | * sizeof (uint32_t))); | |
12262 | uint32_t size = read_4_bytes (dbfd, | |
12263 | dwp_htab->section_pool.v2.sizes | |
12264 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12265 | + i) | |
12266 | * sizeof (uint32_t))); | |
12267 | ||
12268 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12269 | { | |
12270 | case DW_SECT_INFO: | |
12271 | case DW_SECT_TYPES: | |
12272 | sections.info_or_types_offset = offset; | |
12273 | sections.info_or_types_size = size; | |
12274 | break; | |
12275 | case DW_SECT_ABBREV: | |
12276 | sections.abbrev_offset = offset; | |
12277 | sections.abbrev_size = size; | |
12278 | break; | |
12279 | case DW_SECT_LINE: | |
12280 | sections.line_offset = offset; | |
12281 | sections.line_size = size; | |
12282 | break; | |
12283 | case DW_SECT_LOC: | |
12284 | sections.loc_offset = offset; | |
12285 | sections.loc_size = size; | |
12286 | break; | |
12287 | case DW_SECT_STR_OFFSETS: | |
12288 | sections.str_offsets_offset = offset; | |
12289 | sections.str_offsets_size = size; | |
12290 | break; | |
12291 | case DW_SECT_MACINFO: | |
12292 | sections.macinfo_offset = offset; | |
12293 | sections.macinfo_size = size; | |
12294 | break; | |
12295 | case DW_SECT_MACRO: | |
12296 | sections.macro_offset = offset; | |
12297 | sections.macro_size = size; | |
12298 | break; | |
12299 | } | |
12300 | } | |
12301 | ||
12302 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12303 | have dwo_unit "live" in that. At least for now. | |
12304 | ||
12305 | The DWP file can be made up of a random collection of CUs and TUs. | |
12306 | However, for each CU + set of TUs that came from the same original DWO | |
12307 | file, we can combine them back into a virtual DWO file to save space | |
12308 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12309 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12310 | ||
791afaa2 TT |
12311 | std::string virtual_dwo_name = |
12312 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12313 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12314 | (long) (sections.line_size ? sections.line_offset : 0), | |
12315 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12316 | (long) (sections.str_offsets_size | |
12317 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12318 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12319 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12320 | virtual_dwo_name.c_str (), | |
12321 | comp_dir); | |
73869dc2 DE |
12322 | /* Create one if necessary. */ |
12323 | if (*dwo_file_slot == NULL) | |
12324 | { | |
b4f54984 | 12325 | if (dwarf_read_debug) |
73869dc2 DE |
12326 | { |
12327 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12328 | virtual_dwo_name.c_str ()); |
73869dc2 | 12329 | } |
51ac9db5 | 12330 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12331 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12332 | virtual_dwo_name); | |
73869dc2 DE |
12333 | dwo_file->comp_dir = comp_dir; |
12334 | dwo_file->sections.abbrev = | |
ed2dc618 | 12335 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12336 | sections.abbrev_offset, sections.abbrev_size); |
12337 | dwo_file->sections.line = | |
ed2dc618 | 12338 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12339 | sections.line_offset, sections.line_size); |
12340 | dwo_file->sections.loc = | |
ed2dc618 | 12341 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12342 | sections.loc_offset, sections.loc_size); |
12343 | dwo_file->sections.macinfo = | |
ed2dc618 | 12344 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12345 | sections.macinfo_offset, sections.macinfo_size); |
12346 | dwo_file->sections.macro = | |
ed2dc618 | 12347 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12348 | sections.macro_offset, sections.macro_size); |
12349 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12350 | create_dwp_v2_section (dwarf2_per_objfile, |
12351 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12352 | sections.str_offsets_offset, |
12353 | sections.str_offsets_size); | |
12354 | /* The "str" section is global to the entire DWP file. */ | |
12355 | dwo_file->sections.str = dwp_file->sections.str; | |
12356 | /* The info or types section is assigned below to dwo_unit, | |
12357 | there's no need to record it in dwo_file. | |
12358 | Also, we can't simply record type sections in dwo_file because | |
12359 | we record a pointer into the vector in dwo_unit. As we collect more | |
12360 | types we'll grow the vector and eventually have to reallocate space | |
12361 | for it, invalidating all copies of pointers into the previous | |
12362 | contents. */ | |
12363 | *dwo_file_slot = dwo_file; | |
12364 | } | |
12365 | else | |
12366 | { | |
b4f54984 | 12367 | if (dwarf_read_debug) |
73869dc2 DE |
12368 | { |
12369 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12370 | virtual_dwo_name.c_str ()); |
73869dc2 | 12371 | } |
9a3c8263 | 12372 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12373 | } |
73869dc2 DE |
12374 | |
12375 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12376 | dwo_unit->dwo_file = dwo_file; | |
12377 | dwo_unit->signature = signature; | |
8d749320 SM |
12378 | dwo_unit->section = |
12379 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12380 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12381 | is_debug_types | |
73869dc2 DE |
12382 | ? &dwp_file->sections.types |
12383 | : &dwp_file->sections.info, | |
12384 | sections.info_or_types_offset, | |
12385 | sections.info_or_types_size); | |
12386 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12387 | ||
12388 | return dwo_unit; | |
12389 | } | |
12390 | ||
57d63ce2 DE |
12391 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12392 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12393 | |
12394 | static struct dwo_unit * | |
ed2dc618 SM |
12395 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12396 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12397 | ULONGEST signature, int is_debug_types) |
80626a55 | 12398 | { |
57d63ce2 DE |
12399 | const struct dwp_hash_table *dwp_htab = |
12400 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12401 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12402 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12403 | uint32_t hash = signature & mask; |
12404 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12405 | unsigned int i; | |
12406 | void **slot; | |
870f88f7 | 12407 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12408 | |
12409 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12410 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12411 | slot = htab_find_slot (is_debug_types |
12412 | ? dwp_file->loaded_tus | |
12413 | : dwp_file->loaded_cus, | |
12414 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12415 | |
12416 | if (*slot != NULL) | |
9a3c8263 | 12417 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12418 | |
12419 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12420 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12421 | { |
12422 | ULONGEST signature_in_table; | |
12423 | ||
12424 | signature_in_table = | |
57d63ce2 | 12425 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12426 | if (signature_in_table == signature) |
12427 | { | |
57d63ce2 DE |
12428 | uint32_t unit_index = |
12429 | read_4_bytes (dbfd, | |
12430 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12431 | |
73869dc2 DE |
12432 | if (dwp_file->version == 1) |
12433 | { | |
ed2dc618 SM |
12434 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12435 | dwp_file, unit_index, | |
73869dc2 DE |
12436 | comp_dir, signature, |
12437 | is_debug_types); | |
12438 | } | |
12439 | else | |
12440 | { | |
ed2dc618 SM |
12441 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12442 | dwp_file, unit_index, | |
73869dc2 DE |
12443 | comp_dir, signature, |
12444 | is_debug_types); | |
12445 | } | |
9a3c8263 | 12446 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12447 | } |
12448 | if (signature_in_table == 0) | |
12449 | return NULL; | |
12450 | hash = (hash + hash2) & mask; | |
12451 | } | |
12452 | ||
12453 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12454 | " [in module %s]"), | |
12455 | dwp_file->name); | |
12456 | } | |
12457 | ||
ab5088bf | 12458 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12459 | Open the file specified by FILE_NAME and hand it off to BFD for |
12460 | preliminary analysis. Return a newly initialized bfd *, which | |
12461 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12462 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12463 | SEARCH_CWD is true if the current directory is to be searched. |
12464 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12465 | If successful, the file is added to the bfd include table of the |
12466 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12467 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12468 | NOTE: This function is derived from symfile_bfd_open. */ |
12469 | ||
192b62ce | 12470 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12471 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12472 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12473 | { |
24b9144d | 12474 | int desc; |
9c02c129 DE |
12475 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12476 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12477 | to debug_file_directory. */ | |
e0cc99a6 | 12478 | const char *search_path; |
9c02c129 DE |
12479 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12480 | ||
e0cc99a6 | 12481 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12482 | if (search_cwd) |
12483 | { | |
12484 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12485 | { |
12486 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12487 | debug_file_directory, | |
12488 | (char *) NULL)); | |
12489 | search_path = search_path_holder.get (); | |
12490 | } | |
6ac97d4c | 12491 | else |
e0cc99a6 | 12492 | search_path = "."; |
6ac97d4c | 12493 | } |
9c02c129 | 12494 | else |
e0cc99a6 | 12495 | search_path = debug_file_directory; |
3019eac3 | 12496 | |
24b9144d | 12497 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12498 | if (is_dwp) |
12499 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12500 | |
12501 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12502 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12503 | O_RDONLY | O_BINARY, &absolute_name); |
12504 | if (desc < 0) | |
12505 | return NULL; | |
12506 | ||
e0cc99a6 TT |
12507 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12508 | gnutarget, desc)); | |
9c02c129 DE |
12509 | if (sym_bfd == NULL) |
12510 | return NULL; | |
192b62ce | 12511 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12512 | |
192b62ce TT |
12513 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12514 | return NULL; | |
3019eac3 | 12515 | |
13aaf454 DE |
12516 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12517 | This is important because things like demangled_names_hash lives in the | |
12518 | objfile's per_bfd space and may have references to things like symbol | |
12519 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12520 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12521 | |
3019eac3 DE |
12522 | return sym_bfd; |
12523 | } | |
12524 | ||
ab5088bf | 12525 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12526 | COMP_DIR is the DW_AT_comp_dir attribute. |
12527 | The result is the bfd handle of the file. | |
12528 | If there is a problem finding or opening the file, return NULL. | |
12529 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12530 | same as symfile_bfd_open. */ | |
12531 | ||
192b62ce | 12532 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12533 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12534 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12535 | { |
80626a55 | 12536 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12537 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12538 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12539 | |
12540 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12541 | ||
12542 | if (comp_dir != NULL) | |
12543 | { | |
43816ebc TT |
12544 | gdb::unique_xmalloc_ptr<char> path_to_try |
12545 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12546 | |
12547 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12548 | search path, which seems useful. */ | |
ed2dc618 | 12549 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12550 | path_to_try.get (), |
ed2dc618 | 12551 | 0 /*is_dwp*/, |
192b62ce | 12552 | 1 /*search_cwd*/)); |
3019eac3 DE |
12553 | if (abfd != NULL) |
12554 | return abfd; | |
12555 | } | |
12556 | ||
12557 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12558 | is a list of paths. */ | |
12559 | ||
12560 | if (*debug_file_directory == '\0') | |
12561 | return NULL; | |
12562 | ||
ed2dc618 SM |
12563 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12564 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12565 | } |
12566 | ||
80626a55 DE |
12567 | /* This function is mapped across the sections and remembers the offset and |
12568 | size of each of the DWO debugging sections we are interested in. */ | |
12569 | ||
12570 | static void | |
12571 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12572 | { | |
9a3c8263 | 12573 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12574 | const struct dwop_section_names *names = &dwop_section_names; |
12575 | ||
12576 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12577 | { | |
049412e3 | 12578 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12579 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12580 | } |
12581 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12582 | { | |
049412e3 | 12583 | dwo_sections->info.s.section = sectp; |
fd361982 | 12584 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12585 | } |
12586 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12587 | { | |
049412e3 | 12588 | dwo_sections->line.s.section = sectp; |
fd361982 | 12589 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12590 | } |
12591 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12592 | { | |
049412e3 | 12593 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12594 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12595 | } |
12596 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12597 | { | |
049412e3 | 12598 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12599 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12600 | } |
12601 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12602 | { | |
049412e3 | 12603 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12604 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12605 | } |
12606 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12607 | { | |
049412e3 | 12608 | dwo_sections->str.s.section = sectp; |
fd361982 | 12609 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12610 | } |
12611 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12612 | { | |
049412e3 | 12613 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12614 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12615 | } |
12616 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12617 | { | |
12618 | struct dwarf2_section_info type_section; | |
12619 | ||
12620 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12621 | type_section.s.section = sectp; |
fd361982 | 12622 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12623 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12624 | } |
12625 | } | |
12626 | ||
ab5088bf | 12627 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12628 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12629 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12630 | |
12631 | static struct dwo_file * | |
0ac5b59e DE |
12632 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12633 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12634 | { |
ed2dc618 | 12635 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12636 | |
fb1eb2f9 | 12637 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12638 | if (dbfd == NULL) |
12639 | { | |
b4f54984 | 12640 | if (dwarf_read_debug) |
80626a55 DE |
12641 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12642 | return NULL; | |
12643 | } | |
263db9a1 | 12644 | |
51ac9db5 | 12645 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12646 | dwo_file->dwo_name = dwo_name; |
12647 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12648 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12649 | |
fb1eb2f9 | 12650 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12651 | &dwo_file->sections); |
3019eac3 | 12652 | |
18a8505e AT |
12653 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12654 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12655 | |
263db9a1 | 12656 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12657 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12658 | |
b4f54984 | 12659 | if (dwarf_read_debug) |
80626a55 DE |
12660 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12661 | ||
263db9a1 | 12662 | return dwo_file.release (); |
3019eac3 DE |
12663 | } |
12664 | ||
80626a55 | 12665 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12666 | size of each of the DWP debugging sections common to version 1 and 2 that |
12667 | we are interested in. */ | |
3019eac3 | 12668 | |
80626a55 | 12669 | static void |
73869dc2 DE |
12670 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12671 | void *dwp_file_ptr) | |
3019eac3 | 12672 | { |
9a3c8263 | 12673 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12674 | const struct dwop_section_names *names = &dwop_section_names; |
12675 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12676 | |
80626a55 | 12677 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12678 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12679 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12680 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12681 | |
80626a55 DE |
12682 | /* Look for specific sections that we need. */ |
12683 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12684 | { | |
049412e3 | 12685 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12686 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12687 | } |
12688 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12689 | { | |
049412e3 | 12690 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12691 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12692 | } |
12693 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12694 | { | |
049412e3 | 12695 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12696 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12697 | } |
12698 | } | |
3019eac3 | 12699 | |
73869dc2 DE |
12700 | /* This function is mapped across the sections and remembers the offset and |
12701 | size of each of the DWP version 2 debugging sections that we are interested | |
12702 | in. This is split into a separate function because we don't know if we | |
12703 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12704 | ||
12705 | static void | |
12706 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12707 | { | |
9a3c8263 | 12708 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12709 | const struct dwop_section_names *names = &dwop_section_names; |
12710 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12711 | ||
12712 | /* Record the ELF section number for later lookup: this is what the | |
12713 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12714 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12715 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12716 | ||
12717 | /* Look for specific sections that we need. */ | |
12718 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12719 | { | |
049412e3 | 12720 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12721 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12722 | } |
12723 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12724 | { | |
049412e3 | 12725 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12726 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12727 | } |
12728 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12729 | { | |
049412e3 | 12730 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12731 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12732 | } |
12733 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12734 | { | |
049412e3 | 12735 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12736 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12737 | } |
12738 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12739 | { | |
049412e3 | 12740 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12741 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12742 | } |
12743 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12744 | { | |
049412e3 | 12745 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12746 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12747 | } |
12748 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12749 | { | |
049412e3 | 12750 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12751 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12752 | } |
12753 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12754 | { | |
049412e3 | 12755 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12756 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12757 | } |
12758 | } | |
12759 | ||
80626a55 | 12760 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12761 | |
80626a55 DE |
12762 | static hashval_t |
12763 | hash_dwp_loaded_cutus (const void *item) | |
12764 | { | |
9a3c8263 | 12765 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12766 | |
80626a55 DE |
12767 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12768 | return dwo_unit->signature; | |
3019eac3 DE |
12769 | } |
12770 | ||
80626a55 | 12771 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12772 | |
80626a55 DE |
12773 | static int |
12774 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12775 | { |
9a3c8263 SM |
12776 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12777 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12778 | |
80626a55 DE |
12779 | return dua->signature == dub->signature; |
12780 | } | |
3019eac3 | 12781 | |
80626a55 | 12782 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12783 | |
80626a55 DE |
12784 | static htab_t |
12785 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
12786 | { | |
12787 | return htab_create_alloc_ex (3, | |
12788 | hash_dwp_loaded_cutus, | |
12789 | eq_dwp_loaded_cutus, | |
12790 | NULL, | |
12791 | &objfile->objfile_obstack, | |
12792 | hashtab_obstack_allocate, | |
12793 | dummy_obstack_deallocate); | |
12794 | } | |
3019eac3 | 12795 | |
ab5088bf DE |
12796 | /* Try to open DWP file FILE_NAME. |
12797 | The result is the bfd handle of the file. | |
12798 | If there is a problem finding or opening the file, return NULL. | |
12799 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12800 | same as symfile_bfd_open. */ | |
12801 | ||
192b62ce | 12802 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12803 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12804 | const char *file_name) | |
ab5088bf | 12805 | { |
ed2dc618 SM |
12806 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12807 | 1 /*is_dwp*/, | |
192b62ce | 12808 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12809 | if (abfd != NULL) |
12810 | return abfd; | |
12811 | ||
12812 | /* Work around upstream bug 15652. | |
12813 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12814 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12815 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12816 | of the executable's path may have discarded the needed info. | |
12817 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12818 | .gnu_debuglink, but that doesn't exist yet.] | |
12819 | Strip the directory from FILE_NAME and search again. */ | |
12820 | if (*debug_file_directory != '\0') | |
12821 | { | |
12822 | /* Don't implicitly search the current directory here. | |
12823 | If the user wants to search "." to handle this case, | |
12824 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12825 | return try_open_dwop_file (dwarf2_per_objfile, |
12826 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12827 | 0 /*search_cwd*/); |
12828 | } | |
12829 | ||
12830 | return NULL; | |
ab5088bf DE |
12831 | } |
12832 | ||
80626a55 DE |
12833 | /* Initialize the use of the DWP file for the current objfile. |
12834 | By convention the name of the DWP file is ${objfile}.dwp. | |
12835 | The result is NULL if it can't be found. */ | |
a766d390 | 12836 | |
400174b1 | 12837 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12838 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12839 | { |
12840 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12841 | |
82bf32bc JK |
12842 | /* Try to find first .dwp for the binary file before any symbolic links |
12843 | resolving. */ | |
6c447423 DE |
12844 | |
12845 | /* If the objfile is a debug file, find the name of the real binary | |
12846 | file and get the name of dwp file from there. */ | |
d721ba37 | 12847 | std::string dwp_name; |
6c447423 DE |
12848 | if (objfile->separate_debug_objfile_backlink != NULL) |
12849 | { | |
12850 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12851 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12852 | |
d721ba37 | 12853 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12854 | } |
12855 | else | |
d721ba37 PA |
12856 | dwp_name = objfile->original_name; |
12857 | ||
12858 | dwp_name += ".dwp"; | |
80626a55 | 12859 | |
ed2dc618 | 12860 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12861 | if (dbfd == NULL |
12862 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12863 | { | |
12864 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12865 | dwp_name = objfile_name (objfile); |
12866 | dwp_name += ".dwp"; | |
ed2dc618 | 12867 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12868 | } |
12869 | ||
80626a55 DE |
12870 | if (dbfd == NULL) |
12871 | { | |
b4f54984 | 12872 | if (dwarf_read_debug) |
d721ba37 | 12873 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12874 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12875 | } |
400174b1 TT |
12876 | |
12877 | const char *name = bfd_get_filename (dbfd.get ()); | |
12878 | std::unique_ptr<struct dwp_file> dwp_file | |
12879 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12880 | |
0a0f4c01 | 12881 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12882 | dwp_file->elf_sections = |
12883 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12884 | dwp_file->num_sections, asection *); | |
12885 | ||
400174b1 TT |
12886 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12887 | dwarf2_locate_common_dwp_sections, | |
12888 | dwp_file.get ()); | |
80626a55 | 12889 | |
400174b1 TT |
12890 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12891 | 0); | |
80626a55 | 12892 | |
400174b1 TT |
12893 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12894 | 1); | |
80626a55 | 12895 | |
73869dc2 | 12896 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12897 | if (dwp_file->cus && dwp_file->tus |
12898 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12899 | { |
12900 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12901 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12902 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12903 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12904 | " TU version %s [in DWP file %s]"), | |
12905 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12906 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12907 | } |
08302ed2 DE |
12908 | |
12909 | if (dwp_file->cus) | |
12910 | dwp_file->version = dwp_file->cus->version; | |
12911 | else if (dwp_file->tus) | |
12912 | dwp_file->version = dwp_file->tus->version; | |
12913 | else | |
12914 | dwp_file->version = 2; | |
73869dc2 DE |
12915 | |
12916 | if (dwp_file->version == 2) | |
400174b1 TT |
12917 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12918 | dwarf2_locate_v2_dwp_sections, | |
12919 | dwp_file.get ()); | |
73869dc2 | 12920 | |
19ac8c2e DE |
12921 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
12922 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 12923 | |
b4f54984 | 12924 | if (dwarf_read_debug) |
80626a55 DE |
12925 | { |
12926 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12927 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12928 | " %s CUs, %s TUs\n", |
12929 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12930 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12931 | } |
12932 | ||
12933 | return dwp_file; | |
3019eac3 | 12934 | } |
c906108c | 12935 | |
ab5088bf DE |
12936 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12937 | ||
12938 | static struct dwp_file * | |
ed2dc618 | 12939 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12940 | { |
12941 | if (! dwarf2_per_objfile->dwp_checked) | |
12942 | { | |
ed2dc618 SM |
12943 | dwarf2_per_objfile->dwp_file |
12944 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12945 | dwarf2_per_objfile->dwp_checked = 1; |
12946 | } | |
400174b1 | 12947 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12948 | } |
12949 | ||
80626a55 DE |
12950 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12951 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12952 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12953 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12954 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12955 | ||
12956 | This is called, for example, when wanting to read a variable with a | |
12957 | complex location. Therefore we don't want to do file i/o for every call. | |
12958 | Therefore we don't want to look for a DWO file on every call. | |
12959 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12960 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12961 | for a DWO file. | |
12962 | ||
1c658ad5 | 12963 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12964 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12965 | |
3019eac3 | 12966 | static struct dwo_unit * |
80626a55 DE |
12967 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12968 | const char *dwo_name, const char *comp_dir, | |
12969 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12970 | { |
ed2dc618 | 12971 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12972 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12973 | const char *kind = is_debug_types ? "TU" : "CU"; |
12974 | void **dwo_file_slot; | |
3019eac3 | 12975 | struct dwo_file *dwo_file; |
80626a55 | 12976 | struct dwp_file *dwp_file; |
cb1df416 | 12977 | |
6a506a2d DE |
12978 | /* First see if there's a DWP file. |
12979 | If we have a DWP file but didn't find the DWO inside it, don't | |
12980 | look for the original DWO file. It makes gdb behave differently | |
12981 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12982 | |
ed2dc618 | 12983 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12984 | if (dwp_file != NULL) |
cf2c3c16 | 12985 | { |
80626a55 DE |
12986 | const struct dwp_hash_table *dwp_htab = |
12987 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12988 | ||
12989 | if (dwp_htab != NULL) | |
12990 | { | |
12991 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12992 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12993 | signature, is_debug_types); |
80626a55 DE |
12994 | |
12995 | if (dwo_cutu != NULL) | |
12996 | { | |
b4f54984 | 12997 | if (dwarf_read_debug) |
80626a55 DE |
12998 | { |
12999 | fprintf_unfiltered (gdb_stdlog, | |
13000 | "Virtual DWO %s %s found: @%s\n", | |
13001 | kind, hex_string (signature), | |
13002 | host_address_to_string (dwo_cutu)); | |
13003 | } | |
13004 | return dwo_cutu; | |
13005 | } | |
13006 | } | |
13007 | } | |
6a506a2d | 13008 | else |
80626a55 | 13009 | { |
6a506a2d | 13010 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13011 | |
ed2dc618 SM |
13012 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13013 | dwo_name, comp_dir); | |
6a506a2d | 13014 | if (*dwo_file_slot == NULL) |
80626a55 | 13015 | { |
6a506a2d DE |
13016 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13017 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13018 | } |
6a506a2d | 13019 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13020 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13021 | |
6a506a2d | 13022 | if (dwo_file != NULL) |
19c3d4c9 | 13023 | { |
6a506a2d DE |
13024 | struct dwo_unit *dwo_cutu = NULL; |
13025 | ||
13026 | if (is_debug_types && dwo_file->tus) | |
13027 | { | |
13028 | struct dwo_unit find_dwo_cutu; | |
13029 | ||
13030 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13031 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13032 | dwo_cutu |
13033 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13034 | } |
33c5cd75 | 13035 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13036 | { |
33c5cd75 DB |
13037 | struct dwo_unit find_dwo_cutu; |
13038 | ||
13039 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13040 | find_dwo_cutu.signature = signature; | |
13041 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13042 | &find_dwo_cutu); | |
6a506a2d DE |
13043 | } |
13044 | ||
13045 | if (dwo_cutu != NULL) | |
13046 | { | |
b4f54984 | 13047 | if (dwarf_read_debug) |
6a506a2d DE |
13048 | { |
13049 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13050 | kind, dwo_name, hex_string (signature), | |
13051 | host_address_to_string (dwo_cutu)); | |
13052 | } | |
13053 | return dwo_cutu; | |
80626a55 DE |
13054 | } |
13055 | } | |
2e276125 | 13056 | } |
9cdd5dbd | 13057 | |
80626a55 DE |
13058 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13059 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13060 | correctly to find the file. */ | |
13061 | ||
b4f54984 | 13062 | if (dwarf_read_debug) |
80626a55 DE |
13063 | { |
13064 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13065 | kind, dwo_name, hex_string (signature)); | |
13066 | } | |
3019eac3 | 13067 | |
6656a72d DE |
13068 | /* This is a warning and not a complaint because it can be caused by |
13069 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13070 | { |
13071 | /* Print the name of the DWP file if we looked there, helps the user | |
13072 | better diagnose the problem. */ | |
791afaa2 | 13073 | std::string dwp_text; |
43942612 DE |
13074 | |
13075 | if (dwp_file != NULL) | |
791afaa2 TT |
13076 | dwp_text = string_printf (" [in DWP file %s]", |
13077 | lbasename (dwp_file->name)); | |
43942612 | 13078 | |
9d8780f0 | 13079 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13080 | " [in module %s]"), |
13081 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13082 | dwp_text.c_str (), |
43942612 | 13083 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13084 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13085 | } |
3019eac3 | 13086 | return NULL; |
5fb290d7 DJ |
13087 | } |
13088 | ||
80626a55 DE |
13089 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13090 | See lookup_dwo_cutu_unit for details. */ | |
13091 | ||
13092 | static struct dwo_unit * | |
13093 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13094 | const char *dwo_name, const char *comp_dir, | |
13095 | ULONGEST signature) | |
13096 | { | |
13097 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13098 | } | |
13099 | ||
13100 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13101 | See lookup_dwo_cutu_unit for details. */ | |
13102 | ||
13103 | static struct dwo_unit * | |
13104 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13105 | const char *dwo_name, const char *comp_dir) | |
13106 | { | |
13107 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13108 | } | |
13109 | ||
89e63ee4 DE |
13110 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13111 | ||
13112 | static int | |
13113 | queue_and_load_dwo_tu (void **slot, void *info) | |
13114 | { | |
13115 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13116 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13117 | ULONGEST signature = dwo_unit->signature; | |
13118 | struct signatured_type *sig_type = | |
13119 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13120 | ||
13121 | if (sig_type != NULL) | |
13122 | { | |
13123 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13124 | ||
13125 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13126 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13127 | while processing PER_CU. */ | |
13128 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13129 | load_full_type_unit (sig_cu); | |
ae640021 | 13130 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
13131 | } |
13132 | ||
13133 | return 1; | |
13134 | } | |
13135 | ||
13136 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13137 | The DWO may have the only definition of the type, though it may not be | |
13138 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13139 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13140 | ||
13141 | static void | |
13142 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13143 | { | |
13144 | struct dwo_unit *dwo_unit; | |
13145 | struct dwo_file *dwo_file; | |
13146 | ||
13147 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13148 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13149 | gdb_assert (per_cu->cu != NULL); |
13150 | ||
13151 | dwo_unit = per_cu->cu->dwo_unit; | |
13152 | gdb_assert (dwo_unit != NULL); | |
13153 | ||
13154 | dwo_file = dwo_unit->dwo_file; | |
13155 | if (dwo_file->tus != NULL) | |
13156 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13157 | } | |
13158 | ||
3019eac3 | 13159 | /* Read in various DIEs. */ |
348e048f | 13160 | |
d389af10 | 13161 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13162 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13163 | already referenced by DW_AT_abstract_origin from the children of the | |
13164 | current DIE. */ | |
d389af10 JK |
13165 | |
13166 | static void | |
13167 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13168 | { | |
13169 | struct die_info *child_die; | |
791afaa2 | 13170 | sect_offset *offsetp; |
d389af10 JK |
13171 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13172 | struct die_info *origin_die; | |
13173 | /* Iterator of the ORIGIN_DIE children. */ | |
13174 | struct die_info *origin_child_die; | |
d389af10 | 13175 | struct attribute *attr; |
cd02d79d PA |
13176 | struct dwarf2_cu *origin_cu; |
13177 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13178 | |
13179 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13180 | if (!attr) | |
13181 | return; | |
13182 | ||
cd02d79d PA |
13183 | /* Note that following die references may follow to a die in a |
13184 | different cu. */ | |
13185 | ||
13186 | origin_cu = cu; | |
13187 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13188 | ||
13189 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13190 | symbols in. */ | |
13191 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13192 | origin_cu->list_in_scope = cu->list_in_scope; | |
13193 | ||
edb3359d DJ |
13194 | if (die->tag != origin_die->tag |
13195 | && !(die->tag == DW_TAG_inlined_subroutine | |
13196 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13197 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13198 | sect_offset_str (die->sect_off), |
13199 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13200 | |
791afaa2 | 13201 | std::vector<sect_offset> offsets; |
d389af10 | 13202 | |
3ea89b92 PMR |
13203 | for (child_die = die->child; |
13204 | child_die && child_die->tag; | |
13205 | child_die = sibling_die (child_die)) | |
13206 | { | |
13207 | struct die_info *child_origin_die; | |
13208 | struct dwarf2_cu *child_origin_cu; | |
13209 | ||
13210 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13211 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13212 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13213 | present in the abstract instance but not referenced in the concrete | |
13214 | one. */ | |
216f72a1 JK |
13215 | if (child_die->tag == DW_TAG_call_site |
13216 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13217 | continue; |
13218 | ||
c38f313d DJ |
13219 | /* For each CHILD_DIE, find the corresponding child of |
13220 | ORIGIN_DIE. If there is more than one layer of | |
13221 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13222 | but GCC versions at least through 4.4 generate this (GCC PR | |
13223 | 40573). */ | |
3ea89b92 PMR |
13224 | child_origin_die = child_die; |
13225 | child_origin_cu = cu; | |
c38f313d DJ |
13226 | while (1) |
13227 | { | |
cd02d79d PA |
13228 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13229 | child_origin_cu); | |
c38f313d DJ |
13230 | if (attr == NULL) |
13231 | break; | |
cd02d79d PA |
13232 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13233 | &child_origin_cu); | |
c38f313d DJ |
13234 | } |
13235 | ||
d389af10 JK |
13236 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13237 | counterpart may exist. */ | |
c38f313d | 13238 | if (child_origin_die != child_die) |
d389af10 | 13239 | { |
edb3359d DJ |
13240 | if (child_die->tag != child_origin_die->tag |
13241 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13242 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13243 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13244 | "different tags"), |
9d8780f0 SM |
13245 | sect_offset_str (child_die->sect_off), |
13246 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13247 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13248 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13249 | "different parents"), |
9d8780f0 SM |
13250 | sect_offset_str (child_die->sect_off), |
13251 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13252 | else |
791afaa2 | 13253 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13254 | } |
d389af10 | 13255 | } |
791afaa2 TT |
13256 | std::sort (offsets.begin (), offsets.end ()); |
13257 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13258 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13259 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13260 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13261 | "to DIE %s as their abstract origin"), |
13262 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13263 | |
791afaa2 | 13264 | offsetp = offsets.data (); |
d389af10 JK |
13265 | origin_child_die = origin_die->child; |
13266 | while (origin_child_die && origin_child_die->tag) | |
13267 | { | |
13268 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13269 | while (offsetp < offsets_end |
9c541725 | 13270 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13271 | offsetp++; |
b64f50a1 | 13272 | if (offsetp >= offsets_end |
9c541725 | 13273 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13274 | { |
adde2bff DE |
13275 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13276 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13277 | This can happen with mutually referenced abstract_origins. | |
13278 | PR 16581. */ | |
13279 | if (!origin_child_die->in_process) | |
13280 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13281 | } |
13282 | origin_child_die = sibling_die (origin_child_die); | |
13283 | } | |
cd02d79d | 13284 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13285 | |
13286 | if (cu != origin_cu) | |
13287 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13288 | } |
13289 | ||
c906108c | 13290 | static void |
e7c27a73 | 13291 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13292 | { |
518817b3 | 13293 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13294 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13295 | struct context_stack *newobj; |
c906108c SS |
13296 | CORE_ADDR lowpc; |
13297 | CORE_ADDR highpc; | |
13298 | struct die_info *child_die; | |
edb3359d | 13299 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13300 | const char *name; |
e142c38c | 13301 | CORE_ADDR baseaddr; |
801e3a5b | 13302 | struct block *block; |
edb3359d | 13303 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13304 | std::vector<struct symbol *> template_args; |
34eaf542 | 13305 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13306 | |
13307 | if (inlined_func) | |
13308 | { | |
13309 | /* If we do not have call site information, we can't show the | |
13310 | caller of this inlined function. That's too confusing, so | |
13311 | only use the scope for local variables. */ | |
13312 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13313 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13314 | if (call_line == NULL || call_file == NULL) | |
13315 | { | |
13316 | read_lexical_block_scope (die, cu); | |
13317 | return; | |
13318 | } | |
13319 | } | |
c906108c | 13320 | |
b3b3bada | 13321 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13322 | |
94af9270 | 13323 | name = dwarf2_name (die, cu); |
c906108c | 13324 | |
e8d05480 JB |
13325 | /* Ignore functions with missing or empty names. These are actually |
13326 | illegal according to the DWARF standard. */ | |
13327 | if (name == NULL) | |
13328 | { | |
b98664d3 | 13329 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13330 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13331 | return; |
13332 | } | |
13333 | ||
13334 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13335 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13336 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13337 | { |
ae4d0c03 PM |
13338 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13339 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13340 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13341 | "for subprogram DIE at %s"), |
13342 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13343 | return; |
13344 | } | |
c906108c | 13345 | |
3e29f34a MR |
13346 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13347 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13348 | |
34eaf542 TT |
13349 | /* If we have any template arguments, then we must allocate a |
13350 | different sort of symbol. */ | |
13351 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13352 | { | |
13353 | if (child_die->tag == DW_TAG_template_type_param | |
13354 | || child_die->tag == DW_TAG_template_value_param) | |
13355 | { | |
e623cf5d | 13356 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13357 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13358 | break; |
13359 | } | |
13360 | } | |
13361 | ||
c24bdb02 | 13362 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13363 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13364 | (struct symbol *) templ_func); | |
4c2df51b | 13365 | |
81873cc8 | 13366 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13367 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13368 | cu->language); |
13369 | ||
4cecd739 DJ |
13370 | /* If there is a location expression for DW_AT_frame_base, record |
13371 | it. */ | |
e142c38c | 13372 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13373 | if (attr != nullptr) |
fe978cb0 | 13374 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13375 | |
63e43d3a PMR |
13376 | /* If there is a location for the static link, record it. */ |
13377 | newobj->static_link = NULL; | |
13378 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13379 | if (attr != nullptr) |
63e43d3a | 13380 | { |
224c3ddb SM |
13381 | newobj->static_link |
13382 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d AB |
13383 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
13384 | dwarf2_per_cu_addr_type (cu->per_cu)); | |
63e43d3a PMR |
13385 | } |
13386 | ||
c24bdb02 | 13387 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13388 | |
639d11d3 | 13389 | if (die->child != NULL) |
c906108c | 13390 | { |
639d11d3 | 13391 | child_die = die->child; |
c906108c SS |
13392 | while (child_die && child_die->tag) |
13393 | { | |
34eaf542 TT |
13394 | if (child_die->tag == DW_TAG_template_type_param |
13395 | || child_die->tag == DW_TAG_template_value_param) | |
13396 | { | |
13397 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13398 | ||
f1078f66 | 13399 | if (arg != NULL) |
2f4732b0 | 13400 | template_args.push_back (arg); |
34eaf542 TT |
13401 | } |
13402 | else | |
13403 | process_die (child_die, cu); | |
c906108c SS |
13404 | child_die = sibling_die (child_die); |
13405 | } | |
13406 | } | |
13407 | ||
d389af10 JK |
13408 | inherit_abstract_dies (die, cu); |
13409 | ||
4a811a97 UW |
13410 | /* If we have a DW_AT_specification, we might need to import using |
13411 | directives from the context of the specification DIE. See the | |
13412 | comment in determine_prefix. */ | |
13413 | if (cu->language == language_cplus | |
13414 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13415 | { | |
13416 | struct dwarf2_cu *spec_cu = cu; | |
13417 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13418 | ||
13419 | while (spec_die) | |
13420 | { | |
13421 | child_die = spec_die->child; | |
13422 | while (child_die && child_die->tag) | |
13423 | { | |
13424 | if (child_die->tag == DW_TAG_imported_module) | |
13425 | process_die (child_die, spec_cu); | |
13426 | child_die = sibling_die (child_die); | |
13427 | } | |
13428 | ||
13429 | /* In some cases, GCC generates specification DIEs that | |
13430 | themselves contain DW_AT_specification attributes. */ | |
13431 | spec_die = die_specification (spec_die, &spec_cu); | |
13432 | } | |
13433 | } | |
13434 | ||
c24bdb02 | 13435 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13436 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13437 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13438 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13439 | |
df8a16a1 | 13440 | /* For C++, set the block's scope. */ |
45280282 IB |
13441 | if ((cu->language == language_cplus |
13442 | || cu->language == language_fortran | |
c44af4eb TT |
13443 | || cu->language == language_d |
13444 | || cu->language == language_rust) | |
4d4ec4e5 | 13445 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13446 | block_set_scope (block, determine_prefix (die, cu), |
13447 | &objfile->objfile_obstack); | |
df8a16a1 | 13448 | |
801e3a5b JB |
13449 | /* If we have address ranges, record them. */ |
13450 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13451 | |
a60f3166 | 13452 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13453 | |
34eaf542 | 13454 | /* Attach template arguments to function. */ |
2f4732b0 | 13455 | if (!template_args.empty ()) |
34eaf542 TT |
13456 | { |
13457 | gdb_assert (templ_func != NULL); | |
13458 | ||
2f4732b0 | 13459 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13460 | templ_func->template_arguments |
8d749320 SM |
13461 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13462 | templ_func->n_template_arguments); | |
34eaf542 | 13463 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13464 | template_args.data (), |
34eaf542 | 13465 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13466 | |
13467 | /* Make sure that the symtab is set on the new symbols. Even | |
13468 | though they don't appear in this symtab directly, other parts | |
13469 | of gdb assume that symbols do, and this is reasonably | |
13470 | true. */ | |
8634679f | 13471 | for (symbol *sym : template_args) |
3e1d3d8c | 13472 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13473 | } |
13474 | ||
208d8187 JB |
13475 | /* In C++, we can have functions nested inside functions (e.g., when |
13476 | a function declares a class that has methods). This means that | |
13477 | when we finish processing a function scope, we may need to go | |
13478 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13479 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13480 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13481 | |
921e78cf JB |
13482 | /* If we've finished processing a top-level function, subsequent |
13483 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13484 | if (cu->get_builder ()->outermost_context_p ()) |
13485 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13486 | } |
13487 | ||
13488 | /* Process all the DIES contained within a lexical block scope. Start | |
13489 | a new scope, process the dies, and then close the scope. */ | |
13490 | ||
13491 | static void | |
e7c27a73 | 13492 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13493 | { |
518817b3 | 13494 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13495 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13496 | CORE_ADDR lowpc, highpc; |
13497 | struct die_info *child_die; | |
e142c38c DJ |
13498 | CORE_ADDR baseaddr; |
13499 | ||
b3b3bada | 13500 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13501 | |
13502 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13503 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13504 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13505 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13506 | describe ranges. */ |
e385593e JK |
13507 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13508 | { | |
13509 | case PC_BOUNDS_NOT_PRESENT: | |
13510 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13511 | there was no wrapping by that DW_TAG_lexical_block. | |
13512 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13513 | for (child_die = die->child; | |
13514 | child_die != NULL && child_die->tag; | |
13515 | child_die = sibling_die (child_die)) | |
13516 | process_die (child_die, cu); | |
13517 | return; | |
13518 | case PC_BOUNDS_INVALID: | |
13519 | return; | |
13520 | } | |
3e29f34a MR |
13521 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13522 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13523 | |
c24bdb02 | 13524 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13525 | if (die->child != NULL) |
c906108c | 13526 | { |
639d11d3 | 13527 | child_die = die->child; |
c906108c SS |
13528 | while (child_die && child_die->tag) |
13529 | { | |
e7c27a73 | 13530 | process_die (child_die, cu); |
c906108c SS |
13531 | child_die = sibling_die (child_die); |
13532 | } | |
13533 | } | |
3ea89b92 | 13534 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13535 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13536 | |
c24bdb02 KS |
13537 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13538 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13539 | { |
801e3a5b | 13540 | struct block *block |
c24bdb02 | 13541 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13542 | cstk.start_addr, highpc); |
801e3a5b JB |
13543 | |
13544 | /* Note that recording ranges after traversing children, as we | |
13545 | do here, means that recording a parent's ranges entails | |
13546 | walking across all its children's ranges as they appear in | |
13547 | the address map, which is quadratic behavior. | |
13548 | ||
13549 | It would be nicer to record the parent's ranges before | |
13550 | traversing its children, simply overriding whatever you find | |
13551 | there. But since we don't even decide whether to create a | |
13552 | block until after we've traversed its children, that's hard | |
13553 | to do. */ | |
13554 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13555 | } |
c24bdb02 KS |
13556 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13557 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13558 | } |
13559 | ||
216f72a1 | 13560 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13561 | |
13562 | static void | |
13563 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13564 | { | |
518817b3 | 13565 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13566 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13567 | CORE_ADDR pc, baseaddr; | |
13568 | struct attribute *attr; | |
13569 | struct call_site *call_site, call_site_local; | |
13570 | void **slot; | |
13571 | int nparams; | |
13572 | struct die_info *child_die; | |
13573 | ||
b3b3bada | 13574 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13575 | |
216f72a1 JK |
13576 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13577 | if (attr == NULL) | |
13578 | { | |
13579 | /* This was a pre-DWARF-5 GNU extension alias | |
13580 | for DW_AT_call_return_pc. */ | |
13581 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13582 | } | |
96408a79 SA |
13583 | if (!attr) |
13584 | { | |
b98664d3 | 13585 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13586 | "DIE %s [in module %s]"), |
13587 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13588 | return; |
13589 | } | |
cd6c91b4 | 13590 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13591 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13592 | |
13593 | if (cu->call_site_htab == NULL) | |
13594 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13595 | NULL, &objfile->objfile_obstack, | |
13596 | hashtab_obstack_allocate, NULL); | |
13597 | call_site_local.pc = pc; | |
13598 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13599 | if (*slot != NULL) | |
13600 | { | |
b98664d3 | 13601 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13602 | "DIE %s [in module %s]"), |
13603 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13604 | objfile_name (objfile)); |
96408a79 SA |
13605 | return; |
13606 | } | |
13607 | ||
13608 | /* Count parameters at the caller. */ | |
13609 | ||
13610 | nparams = 0; | |
13611 | for (child_die = die->child; child_die && child_die->tag; | |
13612 | child_die = sibling_die (child_die)) | |
13613 | { | |
216f72a1 JK |
13614 | if (child_die->tag != DW_TAG_call_site_parameter |
13615 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13616 | { |
b98664d3 | 13617 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13618 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13619 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13620 | objfile_name (objfile)); |
96408a79 SA |
13621 | continue; |
13622 | } | |
13623 | ||
13624 | nparams++; | |
13625 | } | |
13626 | ||
224c3ddb SM |
13627 | call_site |
13628 | = ((struct call_site *) | |
13629 | obstack_alloc (&objfile->objfile_obstack, | |
13630 | sizeof (*call_site) | |
13631 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13632 | *slot = call_site; |
13633 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13634 | call_site->pc = pc; | |
13635 | ||
216f72a1 JK |
13636 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13637 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13638 | { |
13639 | struct die_info *func_die; | |
13640 | ||
13641 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13642 | for (func_die = die->parent; | |
13643 | func_die && func_die->tag != DW_TAG_subprogram | |
13644 | && func_die->tag != DW_TAG_subroutine_type; | |
13645 | func_die = func_die->parent); | |
13646 | ||
216f72a1 JK |
13647 | /* DW_AT_call_all_calls is a superset |
13648 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13649 | if (func_die |
216f72a1 | 13650 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13651 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13652 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13653 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13654 | { | |
13655 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13656 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13657 | both the initial caller containing the real return address PC and | |
13658 | the final callee containing the current PC of a chain of tail | |
13659 | calls do not need to have the tail call list complete. But any | |
13660 | function candidate for a virtual tail call frame searched via | |
13661 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13662 | determined unambiguously. */ | |
13663 | } | |
13664 | else | |
13665 | { | |
13666 | struct type *func_type = NULL; | |
13667 | ||
13668 | if (func_die) | |
13669 | func_type = get_die_type (func_die, cu); | |
13670 | if (func_type != NULL) | |
13671 | { | |
13672 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13673 | ||
13674 | /* Enlist this call site to the function. */ | |
13675 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13676 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13677 | } | |
13678 | else | |
b98664d3 | 13679 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13680 | "DIE %s [in module %s]"), |
13681 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13682 | } |
13683 | } | |
13684 | ||
216f72a1 JK |
13685 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13686 | if (attr == NULL) | |
13687 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13688 | if (attr == NULL) | |
13689 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13690 | if (attr == NULL) |
216f72a1 JK |
13691 | { |
13692 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13693 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13694 | } | |
96408a79 | 13695 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13696 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13697 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13698 | else if (attr->form_is_block ()) |
96408a79 SA |
13699 | { |
13700 | struct dwarf2_locexpr_baton *dlbaton; | |
13701 | ||
8d749320 | 13702 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13703 | dlbaton->data = DW_BLOCK (attr)->data; |
13704 | dlbaton->size = DW_BLOCK (attr)->size; | |
13705 | dlbaton->per_cu = cu->per_cu; | |
13706 | ||
13707 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13708 | } | |
cd6c91b4 | 13709 | else if (attr->form_is_ref ()) |
96408a79 | 13710 | { |
96408a79 SA |
13711 | struct dwarf2_cu *target_cu = cu; |
13712 | struct die_info *target_die; | |
13713 | ||
ac9ec31b | 13714 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13715 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13716 | if (die_is_declaration (target_die, target_cu)) |
13717 | { | |
7d45c7c3 | 13718 | const char *target_physname; |
9112db09 JK |
13719 | |
13720 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13721 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13722 | if (target_physname == NULL) |
9112db09 | 13723 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13724 | if (target_physname == NULL) |
b98664d3 | 13725 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13726 | "physname, for referencing DIE %s [in module %s]"), |
13727 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13728 | else |
7d455152 | 13729 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13730 | } |
13731 | else | |
13732 | { | |
13733 | CORE_ADDR lowpc; | |
13734 | ||
13735 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13736 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13737 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13738 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13739 | "low pc, for referencing DIE %s [in module %s]"), |
13740 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13741 | else |
3e29f34a MR |
13742 | { |
13743 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13744 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13745 | } | |
96408a79 SA |
13746 | } |
13747 | } | |
13748 | else | |
b98664d3 | 13749 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13750 | "block nor reference, for DIE %s [in module %s]"), |
13751 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13752 | |
13753 | call_site->per_cu = cu->per_cu; | |
13754 | ||
13755 | for (child_die = die->child; | |
13756 | child_die && child_die->tag; | |
13757 | child_die = sibling_die (child_die)) | |
13758 | { | |
96408a79 | 13759 | struct call_site_parameter *parameter; |
1788b2d3 | 13760 | struct attribute *loc, *origin; |
96408a79 | 13761 | |
216f72a1 JK |
13762 | if (child_die->tag != DW_TAG_call_site_parameter |
13763 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13764 | { |
13765 | /* Already printed the complaint above. */ | |
13766 | continue; | |
13767 | } | |
13768 | ||
13769 | gdb_assert (call_site->parameter_count < nparams); | |
13770 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13771 | ||
1788b2d3 JK |
13772 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13773 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13774 | register is contained in DW_AT_call_value. */ |
96408a79 | 13775 | |
24c5c679 | 13776 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13777 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13778 | if (origin == NULL) | |
13779 | { | |
13780 | /* This was a pre-DWARF-5 GNU extension alias | |
13781 | for DW_AT_call_parameter. */ | |
13782 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13783 | } | |
cd6c91b4 | 13784 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13785 | { |
1788b2d3 | 13786 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
13787 | |
13788 | sect_offset sect_off | |
13789 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
13790 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
13791 | { |
13792 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13793 | binding can be done only inside one CU. Such referenced DIE | |
13794 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13795 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13796 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13797 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13798 | objfile_name (objfile)); |
d76b7dbc JK |
13799 | continue; |
13800 | } | |
9c541725 PA |
13801 | parameter->u.param_cu_off |
13802 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13803 | } |
4fc6c0d5 | 13804 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13805 | { |
b98664d3 | 13806 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13807 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13808 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13809 | continue; |
13810 | } | |
24c5c679 | 13811 | else |
96408a79 | 13812 | { |
24c5c679 JK |
13813 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13814 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13815 | if (parameter->u.dwarf_reg != -1) | |
13816 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13817 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13818 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13819 | ¶meter->u.fb_offset)) | |
13820 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13821 | else | |
13822 | { | |
b98664d3 | 13823 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13824 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13825 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13826 | "[in module %s]"), |
9d8780f0 | 13827 | sect_offset_str (child_die->sect_off), |
9c541725 | 13828 | objfile_name (objfile)); |
24c5c679 JK |
13829 | continue; |
13830 | } | |
96408a79 SA |
13831 | } |
13832 | ||
216f72a1 JK |
13833 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13834 | if (attr == NULL) | |
13835 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13836 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13837 | { |
b98664d3 | 13838 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13839 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13840 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13841 | objfile_name (objfile)); |
96408a79 SA |
13842 | continue; |
13843 | } | |
13844 | parameter->value = DW_BLOCK (attr)->data; | |
13845 | parameter->value_size = DW_BLOCK (attr)->size; | |
13846 | ||
13847 | /* Parameters are not pre-cleared by memset above. */ | |
13848 | parameter->data_value = NULL; | |
13849 | parameter->data_value_size = 0; | |
13850 | call_site->parameter_count++; | |
13851 | ||
216f72a1 JK |
13852 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13853 | if (attr == NULL) | |
13854 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13855 | if (attr != nullptr) |
96408a79 | 13856 | { |
4fc6c0d5 | 13857 | if (!attr->form_is_block ()) |
b98664d3 | 13858 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13859 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13860 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13861 | objfile_name (objfile)); |
96408a79 SA |
13862 | else |
13863 | { | |
13864 | parameter->data_value = DW_BLOCK (attr)->data; | |
13865 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13866 | } | |
13867 | } | |
13868 | } | |
13869 | } | |
13870 | ||
71a3c369 TT |
13871 | /* Helper function for read_variable. If DIE represents a virtual |
13872 | table, then return the type of the concrete object that is | |
13873 | associated with the virtual table. Otherwise, return NULL. */ | |
13874 | ||
13875 | static struct type * | |
13876 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13877 | { | |
13878 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13879 | if (attr == NULL) | |
13880 | return NULL; | |
13881 | ||
13882 | /* Find the type DIE. */ | |
13883 | struct die_info *type_die = NULL; | |
13884 | struct dwarf2_cu *type_cu = cu; | |
13885 | ||
cd6c91b4 | 13886 | if (attr->form_is_ref ()) |
71a3c369 TT |
13887 | type_die = follow_die_ref (die, attr, &type_cu); |
13888 | if (type_die == NULL) | |
13889 | return NULL; | |
13890 | ||
13891 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13892 | return NULL; | |
13893 | return die_containing_type (type_die, type_cu); | |
13894 | } | |
13895 | ||
13896 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13897 | ||
13898 | static void | |
13899 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13900 | { | |
13901 | struct rust_vtable_symbol *storage = NULL; | |
13902 | ||
13903 | if (cu->language == language_rust) | |
13904 | { | |
13905 | struct type *containing_type = rust_containing_type (die, cu); | |
13906 | ||
13907 | if (containing_type != NULL) | |
13908 | { | |
518817b3 | 13909 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13910 | |
468c0cbb | 13911 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13912 | initialize_objfile_symbol (storage); |
13913 | storage->concrete_type = containing_type; | |
cf724bc9 | 13914 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13915 | } |
13916 | } | |
13917 | ||
e4a62c65 TV |
13918 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13919 | struct attribute *abstract_origin | |
13920 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13921 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13922 | if (res == NULL && loc && abstract_origin) | |
13923 | { | |
13924 | /* We have a variable without a name, but with a location and an abstract | |
13925 | origin. This may be a concrete instance of an abstract variable | |
13926 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13927 | later. */ | |
13928 | struct dwarf2_cu *origin_cu = cu; | |
13929 | struct die_info *origin_die | |
13930 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13931 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13932 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13933 | } |
71a3c369 TT |
13934 | } |
13935 | ||
43988095 JK |
13936 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13937 | reading .debug_rnglists. | |
13938 | Callback's type should be: | |
13939 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13940 | Return true if the attributes are present and valid, otherwise, | |
13941 | return false. */ | |
13942 | ||
13943 | template <typename Callback> | |
13944 | static bool | |
13945 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13946 | Callback &&callback) | |
13947 | { | |
ed2dc618 | 13948 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13949 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13950 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13951 | bfd *obfd = objfile->obfd; |
43988095 JK |
13952 | /* Base address selection entry. */ |
13953 | CORE_ADDR base; | |
13954 | int found_base; | |
43988095 | 13955 | const gdb_byte *buffer; |
43988095 JK |
13956 | CORE_ADDR baseaddr; |
13957 | bool overflow = false; | |
13958 | ||
13959 | found_base = cu->base_known; | |
13960 | base = cu->base_address; | |
13961 | ||
96b79293 | 13962 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13963 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13964 | { | |
b98664d3 | 13965 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13966 | offset); |
13967 | return false; | |
13968 | } | |
13969 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13970 | ||
b3b3bada | 13971 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13972 | |
13973 | while (1) | |
13974 | { | |
7814882a JK |
13975 | /* Initialize it due to a false compiler warning. */ |
13976 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13977 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13978 | + dwarf2_per_objfile->rnglists.size); | |
13979 | unsigned int bytes_read; | |
13980 | ||
13981 | if (buffer == buf_end) | |
13982 | { | |
13983 | overflow = true; | |
13984 | break; | |
13985 | } | |
13986 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13987 | switch (rlet) | |
13988 | { | |
13989 | case DW_RLE_end_of_list: | |
13990 | break; | |
13991 | case DW_RLE_base_address: | |
13992 | if (buffer + cu->header.addr_size > buf_end) | |
13993 | { | |
13994 | overflow = true; | |
13995 | break; | |
13996 | } | |
13997 | base = read_address (obfd, buffer, cu, &bytes_read); | |
13998 | found_base = 1; | |
13999 | buffer += bytes_read; | |
14000 | break; | |
14001 | case DW_RLE_start_length: | |
14002 | if (buffer + cu->header.addr_size > buf_end) | |
14003 | { | |
14004 | overflow = true; | |
14005 | break; | |
14006 | } | |
14007 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14008 | buffer += bytes_read; | |
14009 | range_end = (range_beginning | |
14010 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14011 | buffer += bytes_read; | |
14012 | if (buffer > buf_end) | |
14013 | { | |
14014 | overflow = true; | |
14015 | break; | |
14016 | } | |
14017 | break; | |
14018 | case DW_RLE_offset_pair: | |
14019 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14020 | buffer += bytes_read; | |
14021 | if (buffer > buf_end) | |
14022 | { | |
14023 | overflow = true; | |
14024 | break; | |
14025 | } | |
14026 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14027 | buffer += bytes_read; | |
14028 | if (buffer > buf_end) | |
14029 | { | |
14030 | overflow = true; | |
14031 | break; | |
14032 | } | |
14033 | break; | |
14034 | case DW_RLE_start_end: | |
14035 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14036 | { | |
14037 | overflow = true; | |
14038 | break; | |
14039 | } | |
14040 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14041 | buffer += bytes_read; | |
14042 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14043 | buffer += bytes_read; | |
14044 | break; | |
14045 | default: | |
b98664d3 | 14046 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14047 | return false; |
14048 | } | |
14049 | if (rlet == DW_RLE_end_of_list || overflow) | |
14050 | break; | |
14051 | if (rlet == DW_RLE_base_address) | |
14052 | continue; | |
14053 | ||
14054 | if (!found_base) | |
14055 | { | |
14056 | /* We have no valid base address for the ranges | |
14057 | data. */ | |
b98664d3 | 14058 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14059 | return false; |
14060 | } | |
14061 | ||
14062 | if (range_beginning > range_end) | |
14063 | { | |
14064 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14065 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14066 | return false; |
14067 | } | |
14068 | ||
14069 | /* Empty range entries have no effect. */ | |
14070 | if (range_beginning == range_end) | |
14071 | continue; | |
14072 | ||
14073 | range_beginning += base; | |
14074 | range_end += base; | |
14075 | ||
14076 | /* A not-uncommon case of bad debug info. | |
14077 | Don't pollute the addrmap with bad data. */ | |
14078 | if (range_beginning + baseaddr == 0 | |
14079 | && !dwarf2_per_objfile->has_section_at_zero) | |
14080 | { | |
b98664d3 | 14081 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14082 | " [in module %s]"), objfile_name (objfile)); |
14083 | continue; | |
14084 | } | |
14085 | ||
14086 | callback (range_beginning, range_end); | |
14087 | } | |
14088 | ||
14089 | if (overflow) | |
14090 | { | |
b98664d3 | 14091 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14092 | "for DW_AT_ranges attribute"), |
14093 | offset); | |
14094 | return false; | |
14095 | } | |
14096 | ||
14097 | return true; | |
14098 | } | |
14099 | ||
14100 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14101 | Callback's type should be: | |
14102 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14103 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14104 | |
43988095 | 14105 | template <typename Callback> |
43039443 | 14106 | static int |
5f46c5a5 | 14107 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14108 | Callback &&callback) |
43039443 | 14109 | { |
ed2dc618 | 14110 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14111 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14112 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14113 | struct comp_unit_head *cu_header = &cu->header; |
14114 | bfd *obfd = objfile->obfd; | |
14115 | unsigned int addr_size = cu_header->addr_size; | |
14116 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14117 | /* Base address selection entry. */ | |
14118 | CORE_ADDR base; | |
14119 | int found_base; | |
14120 | unsigned int dummy; | |
d521ce57 | 14121 | const gdb_byte *buffer; |
ff013f42 | 14122 | CORE_ADDR baseaddr; |
43039443 | 14123 | |
43988095 JK |
14124 | if (cu_header->version >= 5) |
14125 | return dwarf2_rnglists_process (offset, cu, callback); | |
14126 | ||
d00adf39 DE |
14127 | found_base = cu->base_known; |
14128 | base = cu->base_address; | |
43039443 | 14129 | |
96b79293 | 14130 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 14131 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14132 | { |
b98664d3 | 14133 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14134 | offset); |
14135 | return 0; | |
14136 | } | |
dce234bc | 14137 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14138 | |
b3b3bada | 14139 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14140 | |
43039443 JK |
14141 | while (1) |
14142 | { | |
14143 | CORE_ADDR range_beginning, range_end; | |
14144 | ||
14145 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14146 | buffer += addr_size; | |
14147 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14148 | buffer += addr_size; | |
14149 | offset += 2 * addr_size; | |
14150 | ||
14151 | /* An end of list marker is a pair of zero addresses. */ | |
14152 | if (range_beginning == 0 && range_end == 0) | |
14153 | /* Found the end of list entry. */ | |
14154 | break; | |
14155 | ||
14156 | /* Each base address selection entry is a pair of 2 values. | |
14157 | The first is the largest possible address, the second is | |
14158 | the base address. Check for a base address here. */ | |
14159 | if ((range_beginning & mask) == mask) | |
14160 | { | |
28d2bfb9 AB |
14161 | /* If we found the largest possible address, then we already |
14162 | have the base address in range_end. */ | |
14163 | base = range_end; | |
43039443 JK |
14164 | found_base = 1; |
14165 | continue; | |
14166 | } | |
14167 | ||
14168 | if (!found_base) | |
14169 | { | |
14170 | /* We have no valid base address for the ranges | |
14171 | data. */ | |
b98664d3 | 14172 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14173 | return 0; |
14174 | } | |
14175 | ||
9277c30c UW |
14176 | if (range_beginning > range_end) |
14177 | { | |
14178 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14179 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14180 | return 0; |
14181 | } | |
14182 | ||
14183 | /* Empty range entries have no effect. */ | |
14184 | if (range_beginning == range_end) | |
14185 | continue; | |
14186 | ||
43039443 JK |
14187 | range_beginning += base; |
14188 | range_end += base; | |
14189 | ||
01093045 DE |
14190 | /* A not-uncommon case of bad debug info. |
14191 | Don't pollute the addrmap with bad data. */ | |
14192 | if (range_beginning + baseaddr == 0 | |
14193 | && !dwarf2_per_objfile->has_section_at_zero) | |
14194 | { | |
b98664d3 | 14195 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14196 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14197 | continue; |
14198 | } | |
14199 | ||
5f46c5a5 JK |
14200 | callback (range_beginning, range_end); |
14201 | } | |
14202 | ||
14203 | return 1; | |
14204 | } | |
14205 | ||
14206 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14207 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14208 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14209 | ||
14210 | static int | |
14211 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14212 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14213 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14214 | { |
518817b3 | 14215 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 14216 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 14217 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14218 | int low_set = 0; |
14219 | CORE_ADDR low = 0; | |
14220 | CORE_ADDR high = 0; | |
14221 | int retval; | |
14222 | ||
14223 | retval = dwarf2_ranges_process (offset, cu, | |
14224 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14225 | { | |
9277c30c | 14226 | if (ranges_pst != NULL) |
3e29f34a MR |
14227 | { |
14228 | CORE_ADDR lowpc; | |
14229 | CORE_ADDR highpc; | |
14230 | ||
79748972 TT |
14231 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14232 | range_beginning + baseaddr) | |
14233 | - baseaddr); | |
14234 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14235 | range_end + baseaddr) | |
14236 | - baseaddr); | |
d320c2b5 TT |
14237 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14238 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14239 | } |
ff013f42 | 14240 | |
43039443 JK |
14241 | /* FIXME: This is recording everything as a low-high |
14242 | segment of consecutive addresses. We should have a | |
14243 | data structure for discontiguous block ranges | |
14244 | instead. */ | |
14245 | if (! low_set) | |
14246 | { | |
14247 | low = range_beginning; | |
14248 | high = range_end; | |
14249 | low_set = 1; | |
14250 | } | |
14251 | else | |
14252 | { | |
14253 | if (range_beginning < low) | |
14254 | low = range_beginning; | |
14255 | if (range_end > high) | |
14256 | high = range_end; | |
14257 | } | |
5f46c5a5 JK |
14258 | }); |
14259 | if (!retval) | |
14260 | return 0; | |
43039443 JK |
14261 | |
14262 | if (! low_set) | |
14263 | /* If the first entry is an end-of-list marker, the range | |
14264 | describes an empty scope, i.e. no instructions. */ | |
14265 | return 0; | |
14266 | ||
14267 | if (low_return) | |
14268 | *low_return = low; | |
14269 | if (high_return) | |
14270 | *high_return = high; | |
14271 | return 1; | |
14272 | } | |
14273 | ||
3a2b436a JK |
14274 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14275 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14276 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14277 | |
3a2b436a | 14278 | static enum pc_bounds_kind |
af34e669 | 14279 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14280 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14281 | dwarf2_psymtab *pst) |
c906108c | 14282 | { |
518817b3 SM |
14283 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14284 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14285 | struct attribute *attr; |
91da1414 | 14286 | struct attribute *attr_high; |
af34e669 DJ |
14287 | CORE_ADDR low = 0; |
14288 | CORE_ADDR high = 0; | |
e385593e | 14289 | enum pc_bounds_kind ret; |
c906108c | 14290 | |
91da1414 MW |
14291 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14292 | if (attr_high) | |
af34e669 | 14293 | { |
e142c38c | 14294 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14295 | if (attr != nullptr) |
91da1414 | 14296 | { |
cd6c91b4 TT |
14297 | low = attr->value_as_address (); |
14298 | high = attr_high->value_as_address (); | |
14299 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14300 | high += low; |
91da1414 | 14301 | } |
af34e669 DJ |
14302 | else |
14303 | /* Found high w/o low attribute. */ | |
e385593e | 14304 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14305 | |
14306 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14307 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14308 | } |
c906108c | 14309 | else |
af34e669 | 14310 | { |
e142c38c | 14311 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14312 | if (attr != NULL) |
14313 | { | |
18a8505e | 14314 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14315 | We take advantage of the fact that DW_AT_ranges does not appear |
14316 | in DW_TAG_compile_unit of DWO files. */ | |
14317 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14318 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14319 | + (need_ranges_base | |
14320 | ? cu->ranges_base | |
14321 | : 0)); | |
2e3cf129 | 14322 | |
af34e669 | 14323 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14324 | .debug_ranges section. */ |
2e3cf129 | 14325 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14326 | return PC_BOUNDS_INVALID; |
43039443 | 14327 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14328 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14329 | } |
e385593e JK |
14330 | else |
14331 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14332 | } |
c906108c | 14333 | |
48fbe735 | 14334 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14335 | if (high <= low) |
e385593e | 14336 | return PC_BOUNDS_INVALID; |
c906108c SS |
14337 | |
14338 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14339 | eliminate duplicate copies of functions and vtables and such. | |
14340 | The linker will arbitrarily choose one and discard the others. | |
14341 | The AT_*_pc values for such functions refer to local labels in | |
14342 | these sections. If the section from that file was discarded, the | |
14343 | labels are not in the output, so the relocs get a value of 0. | |
14344 | If this is a discarded function, mark the pc bounds as invalid, | |
14345 | so that GDB will ignore it. */ | |
72dca2f5 | 14346 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14347 | return PC_BOUNDS_INVALID; |
c906108c SS |
14348 | |
14349 | *lowpc = low; | |
96408a79 SA |
14350 | if (highpc) |
14351 | *highpc = high; | |
af34e669 | 14352 | return ret; |
c906108c SS |
14353 | } |
14354 | ||
b084d499 JB |
14355 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14356 | its low and high PC addresses. Do nothing if these addresses could not | |
14357 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14358 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14359 | ||
14360 | static void | |
14361 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14362 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14363 | struct dwarf2_cu *cu) | |
14364 | { | |
14365 | CORE_ADDR low, high; | |
14366 | struct die_info *child = die->child; | |
14367 | ||
e385593e | 14368 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14369 | { |
325fac50 PA |
14370 | *lowpc = std::min (*lowpc, low); |
14371 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14372 | } |
14373 | ||
14374 | /* If the language does not allow nested subprograms (either inside | |
14375 | subprograms or lexical blocks), we're done. */ | |
14376 | if (cu->language != language_ada) | |
14377 | return; | |
6e70227d | 14378 | |
b084d499 JB |
14379 | /* Check all the children of the given DIE. If it contains nested |
14380 | subprograms, then check their pc bounds. Likewise, we need to | |
14381 | check lexical blocks as well, as they may also contain subprogram | |
14382 | definitions. */ | |
14383 | while (child && child->tag) | |
14384 | { | |
14385 | if (child->tag == DW_TAG_subprogram | |
14386 | || child->tag == DW_TAG_lexical_block) | |
14387 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14388 | child = sibling_die (child); | |
14389 | } | |
14390 | } | |
14391 | ||
fae299cd DC |
14392 | /* Get the low and high pc's represented by the scope DIE, and store |
14393 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14394 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14395 | ||
14396 | static void | |
14397 | get_scope_pc_bounds (struct die_info *die, | |
14398 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14399 | struct dwarf2_cu *cu) | |
14400 | { | |
14401 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14402 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14403 | CORE_ADDR current_low, current_high; | |
14404 | ||
3a2b436a | 14405 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14406 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14407 | { |
14408 | best_low = current_low; | |
14409 | best_high = current_high; | |
14410 | } | |
14411 | else | |
14412 | { | |
14413 | struct die_info *child = die->child; | |
14414 | ||
14415 | while (child && child->tag) | |
14416 | { | |
14417 | switch (child->tag) { | |
14418 | case DW_TAG_subprogram: | |
b084d499 | 14419 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14420 | break; |
14421 | case DW_TAG_namespace: | |
f55ee35c | 14422 | case DW_TAG_module: |
fae299cd DC |
14423 | /* FIXME: carlton/2004-01-16: Should we do this for |
14424 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14425 | that current GCC's always emit the DIEs corresponding | |
14426 | to definitions of methods of classes as children of a | |
14427 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14428 | the DIEs giving the declarations, which could be | |
14429 | anywhere). But I don't see any reason why the | |
14430 | standards says that they have to be there. */ | |
14431 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14432 | ||
14433 | if (current_low != ((CORE_ADDR) -1)) | |
14434 | { | |
325fac50 PA |
14435 | best_low = std::min (best_low, current_low); |
14436 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14437 | } |
14438 | break; | |
14439 | default: | |
0963b4bd | 14440 | /* Ignore. */ |
fae299cd DC |
14441 | break; |
14442 | } | |
14443 | ||
14444 | child = sibling_die (child); | |
14445 | } | |
14446 | } | |
14447 | ||
14448 | *lowpc = best_low; | |
14449 | *highpc = best_high; | |
14450 | } | |
14451 | ||
801e3a5b JB |
14452 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14453 | in DIE. */ | |
380bca97 | 14454 | |
801e3a5b JB |
14455 | static void |
14456 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14457 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14458 | { | |
518817b3 | 14459 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14460 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14461 | struct attribute *attr; |
91da1414 | 14462 | struct attribute *attr_high; |
801e3a5b | 14463 | |
91da1414 MW |
14464 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14465 | if (attr_high) | |
801e3a5b | 14466 | { |
801e3a5b | 14467 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14468 | if (attr != nullptr) |
801e3a5b | 14469 | { |
cd6c91b4 TT |
14470 | CORE_ADDR low = attr->value_as_address (); |
14471 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14472 | |
cd6c91b4 | 14473 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14474 | high += low; |
9a619af0 | 14475 | |
3e29f34a MR |
14476 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14477 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14478 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14479 | } |
14480 | } | |
14481 | ||
14482 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14483 | if (attr != nullptr) |
801e3a5b | 14484 | { |
18a8505e | 14485 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14486 | We take advantage of the fact that DW_AT_ranges does not appear |
14487 | in DW_TAG_compile_unit of DWO files. */ | |
14488 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14489 | |
14490 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14491 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14492 | unsigned long offset = (DW_UNSND (attr) |
14493 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14494 | |
2d5f09ec | 14495 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14496 | dwarf2_ranges_process (offset, cu, |
14497 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14498 | { | |
58fdfd2c JK |
14499 | start += baseaddr; |
14500 | end += baseaddr; | |
5f46c5a5 JK |
14501 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14502 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14503 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14504 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14505 | }); |
2d5f09ec KB |
14506 | |
14507 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14508 | } |
14509 | } | |
14510 | ||
685b1105 JK |
14511 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14512 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14513 | |
685b1105 JK |
14514 | static void |
14515 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14516 | { |
38360086 | 14517 | int major, minor; |
60d5a603 JK |
14518 | |
14519 | if (cu->producer == NULL) | |
14520 | { | |
14521 | /* For unknown compilers expect their behavior is DWARF version | |
14522 | compliant. | |
14523 | ||
14524 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14525 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14526 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14527 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14528 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14529 | } |
b1ffba5a | 14530 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14531 | { |
38360086 MW |
14532 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14533 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14534 | } |
5230b05a | 14535 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14536 | { |
14537 | cu->producer_is_icc = true; | |
14538 | cu->producer_is_icc_lt_14 = major < 14; | |
14539 | } | |
c258c396 JD |
14540 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14541 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14542 | else |
14543 | { | |
14544 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14545 | compliant. */ | |
60d5a603 JK |
14546 | } |
14547 | ||
9068261f | 14548 | cu->checked_producer = true; |
685b1105 | 14549 | } |
ba919b58 | 14550 | |
685b1105 JK |
14551 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14552 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14553 | during 4.6.0 experimental. */ | |
14554 | ||
9068261f | 14555 | static bool |
685b1105 JK |
14556 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14557 | { | |
14558 | if (!cu->checked_producer) | |
14559 | check_producer (cu); | |
14560 | ||
14561 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14562 | } |
14563 | ||
c258c396 JD |
14564 | |
14565 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14566 | with incorrect is_stmt attributes. */ | |
14567 | ||
14568 | static bool | |
14569 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14570 | { | |
14571 | if (!cu->checked_producer) | |
14572 | check_producer (cu); | |
14573 | ||
14574 | return cu->producer_is_codewarrior; | |
14575 | } | |
14576 | ||
405feb71 | 14577 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14578 | DW_AT_accessibility. */ |
14579 | ||
14580 | static enum dwarf_access_attribute | |
14581 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14582 | { | |
14583 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14584 | { | |
14585 | /* The default DWARF 2 accessibility for members is public, the default | |
14586 | accessibility for inheritance is private. */ | |
14587 | ||
14588 | if (die->tag != DW_TAG_inheritance) | |
14589 | return DW_ACCESS_public; | |
14590 | else | |
14591 | return DW_ACCESS_private; | |
14592 | } | |
14593 | else | |
14594 | { | |
14595 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14596 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14597 | depends on the container kind. */ | |
14598 | ||
14599 | if (die->parent->tag == DW_TAG_class_type) | |
14600 | return DW_ACCESS_private; | |
14601 | else | |
14602 | return DW_ACCESS_public; | |
14603 | } | |
14604 | } | |
14605 | ||
74ac6d43 TT |
14606 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14607 | offset. If the attribute was not found return 0, otherwise return | |
14608 | 1. If it was found but could not properly be handled, set *OFFSET | |
14609 | to 0. */ | |
14610 | ||
14611 | static int | |
14612 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14613 | LONGEST *offset) | |
14614 | { | |
14615 | struct attribute *attr; | |
14616 | ||
14617 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14618 | if (attr != NULL) | |
14619 | { | |
14620 | *offset = 0; | |
14621 | ||
14622 | /* Note that we do not check for a section offset first here. | |
14623 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14624 | so if we see it, we can assume that a constant form is really | |
14625 | a constant and not a section offset. */ | |
cd6c91b4 | 14626 | if (attr->form_is_constant ()) |
74ac6d43 | 14627 | *offset = dwarf2_get_attr_constant_value (attr, 0); |
cd6c91b4 | 14628 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14629 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14630 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14631 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14632 | else | |
14633 | dwarf2_complex_location_expr_complaint (); | |
14634 | ||
14635 | return 1; | |
14636 | } | |
14637 | ||
14638 | return 0; | |
14639 | } | |
14640 | ||
c906108c SS |
14641 | /* Add an aggregate field to the field list. */ |
14642 | ||
14643 | static void | |
107d2387 | 14644 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14645 | struct dwarf2_cu *cu) |
6e70227d | 14646 | { |
518817b3 | 14647 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14648 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14649 | struct nextfield *new_field; |
14650 | struct attribute *attr; | |
14651 | struct field *fp; | |
15d034d0 | 14652 | const char *fieldname = ""; |
c906108c | 14653 | |
7d0ccb61 DJ |
14654 | if (die->tag == DW_TAG_inheritance) |
14655 | { | |
be2daae6 TT |
14656 | fip->baseclasses.emplace_back (); |
14657 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14658 | } |
14659 | else | |
14660 | { | |
be2daae6 TT |
14661 | fip->fields.emplace_back (); |
14662 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14663 | } |
be2daae6 | 14664 | |
c906108c SS |
14665 | fip->nfields++; |
14666 | ||
e142c38c | 14667 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14668 | if (attr != nullptr) |
c906108c | 14669 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14670 | else |
14671 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14672 | if (new_field->accessibility != DW_ACCESS_public) |
14673 | fip->non_public_fields = 1; | |
60d5a603 | 14674 | |
e142c38c | 14675 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14676 | if (attr != nullptr) |
c906108c | 14677 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14678 | else |
14679 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14680 | |
14681 | fp = &new_field->field; | |
a9a9bd0f | 14682 | |
e142c38c | 14683 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14684 | { |
74ac6d43 TT |
14685 | LONGEST offset; |
14686 | ||
a9a9bd0f | 14687 | /* Data member other than a C++ static data member. */ |
6e70227d | 14688 | |
c906108c | 14689 | /* Get type of field. */ |
e7c27a73 | 14690 | fp->type = die_type (die, cu); |
c906108c | 14691 | |
d6a843b5 | 14692 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14693 | |
c906108c | 14694 | /* Get bit size of field (zero if none). */ |
e142c38c | 14695 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14696 | if (attr != nullptr) |
c906108c SS |
14697 | { |
14698 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14699 | } | |
14700 | else | |
14701 | { | |
14702 | FIELD_BITSIZE (*fp) = 0; | |
14703 | } | |
14704 | ||
14705 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14706 | if (handle_data_member_location (die, cu, &offset)) |
14707 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14708 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14709 | if (attr != nullptr) |
c906108c | 14710 | { |
d5a22e77 | 14711 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14712 | { |
14713 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14714 | additional bit offset from the MSB of the containing |
14715 | anonymous object to the MSB of the field. We don't | |
14716 | have to do anything special since we don't need to | |
14717 | know the size of the anonymous object. */ | |
f41f5e61 | 14718 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14719 | } |
14720 | else | |
14721 | { | |
14722 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14723 | MSB of the anonymous object, subtract off the number of |
14724 | bits from the MSB of the field to the MSB of the | |
14725 | object, and then subtract off the number of bits of | |
14726 | the field itself. The result is the bit offset of | |
14727 | the LSB of the field. */ | |
c906108c SS |
14728 | int anonymous_size; |
14729 | int bit_offset = DW_UNSND (attr); | |
14730 | ||
e142c38c | 14731 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14732 | if (attr != nullptr) |
c906108c SS |
14733 | { |
14734 | /* The size of the anonymous object containing | |
14735 | the bit field is explicit, so use the | |
14736 | indicated size (in bytes). */ | |
14737 | anonymous_size = DW_UNSND (attr); | |
14738 | } | |
14739 | else | |
14740 | { | |
14741 | /* The size of the anonymous object containing | |
14742 | the bit field must be inferred from the type | |
14743 | attribute of the data member containing the | |
14744 | bit field. */ | |
14745 | anonymous_size = TYPE_LENGTH (fp->type); | |
14746 | } | |
f41f5e61 PA |
14747 | SET_FIELD_BITPOS (*fp, |
14748 | (FIELD_BITPOS (*fp) | |
14749 | + anonymous_size * bits_per_byte | |
14750 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14751 | } |
14752 | } | |
da5b30da AA |
14753 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14754 | if (attr != NULL) | |
14755 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
14756 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
14757 | |
14758 | /* Get name of field. */ | |
39cbfefa DJ |
14759 | fieldname = dwarf2_name (die, cu); |
14760 | if (fieldname == NULL) | |
14761 | fieldname = ""; | |
d8151005 DJ |
14762 | |
14763 | /* The name is already allocated along with this objfile, so we don't | |
14764 | need to duplicate it for the type. */ | |
14765 | fp->name = fieldname; | |
c906108c SS |
14766 | |
14767 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14768 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14769 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14770 | { |
d48cc9dd | 14771 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14772 | new_field->accessibility = DW_ACCESS_private; |
14773 | fip->non_public_fields = 1; | |
14774 | } | |
14775 | } | |
a9a9bd0f | 14776 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14777 | { |
a9a9bd0f DC |
14778 | /* C++ static member. */ |
14779 | ||
14780 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14781 | is a declaration, but all versions of G++ as of this writing | |
14782 | (so through at least 3.2.1) incorrectly generate | |
14783 | DW_TAG_variable tags. */ | |
6e70227d | 14784 | |
ff355380 | 14785 | const char *physname; |
c906108c | 14786 | |
a9a9bd0f | 14787 | /* Get name of field. */ |
39cbfefa DJ |
14788 | fieldname = dwarf2_name (die, cu); |
14789 | if (fieldname == NULL) | |
c906108c SS |
14790 | return; |
14791 | ||
254e6b9e | 14792 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14793 | if (attr |
14794 | /* Only create a symbol if this is an external value. | |
14795 | new_symbol checks this and puts the value in the global symbol | |
14796 | table, which we want. If it is not external, new_symbol | |
14797 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14798 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14799 | { |
14800 | /* A static const member, not much different than an enum as far as | |
14801 | we're concerned, except that we can support more types. */ | |
14802 | new_symbol (die, NULL, cu); | |
14803 | } | |
14804 | ||
2df3850c | 14805 | /* Get physical name. */ |
ff355380 | 14806 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14807 | |
d8151005 DJ |
14808 | /* The name is already allocated along with this objfile, so we don't |
14809 | need to duplicate it for the type. */ | |
14810 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14811 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14812 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14813 | } |
14814 | else if (die->tag == DW_TAG_inheritance) | |
14815 | { | |
74ac6d43 | 14816 | LONGEST offset; |
d4b96c9a | 14817 | |
74ac6d43 TT |
14818 | /* C++ base class field. */ |
14819 | if (handle_data_member_location (die, cu, &offset)) | |
14820 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 14821 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14822 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14823 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14824 | } |
2ddeaf8a TT |
14825 | else if (die->tag == DW_TAG_variant_part) |
14826 | { | |
14827 | /* process_structure_scope will treat this DIE as a union. */ | |
14828 | process_structure_scope (die, cu); | |
14829 | ||
14830 | /* The variant part is relative to the start of the enclosing | |
14831 | structure. */ | |
14832 | SET_FIELD_BITPOS (*fp, 0); | |
14833 | fp->type = get_die_type (die, cu); | |
14834 | fp->artificial = 1; | |
14835 | fp->name = "<<variant>>"; | |
c8c81635 TT |
14836 | |
14837 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
14838 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
14839 | child sizes, being sure to account for the offset at which |
14840 | each child is seen. */ | |
c8c81635 TT |
14841 | if (TYPE_LENGTH (fp->type) == 0) |
14842 | { | |
14843 | unsigned max = 0; | |
14844 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
14845 | { |
14846 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
14847 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
14848 | if (len > max) | |
14849 | max = len; | |
14850 | } | |
c8c81635 TT |
14851 | TYPE_LENGTH (fp->type) = max; |
14852 | } | |
2ddeaf8a TT |
14853 | } |
14854 | else | |
14855 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14856 | } |
14857 | ||
883fd55a KS |
14858 | /* Can the type given by DIE define another type? */ |
14859 | ||
14860 | static bool | |
14861 | type_can_define_types (const struct die_info *die) | |
14862 | { | |
14863 | switch (die->tag) | |
14864 | { | |
14865 | case DW_TAG_typedef: | |
14866 | case DW_TAG_class_type: | |
14867 | case DW_TAG_structure_type: | |
14868 | case DW_TAG_union_type: | |
14869 | case DW_TAG_enumeration_type: | |
14870 | return true; | |
14871 | ||
14872 | default: | |
14873 | return false; | |
14874 | } | |
14875 | } | |
14876 | ||
14877 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14878 | |
14879 | static void | |
883fd55a KS |
14880 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14881 | struct dwarf2_cu *cu) | |
6e70227d | 14882 | { |
be2daae6 TT |
14883 | struct decl_field fp; |
14884 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14885 | |
883fd55a | 14886 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14887 | |
883fd55a | 14888 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14889 | fp.name = dwarf2_name (die, cu); |
14890 | fp.type = read_type_die (die, cu); | |
98751a41 | 14891 | |
c191a687 KS |
14892 | /* Save accessibility. */ |
14893 | enum dwarf_access_attribute accessibility; | |
14894 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14895 | if (attr != NULL) | |
14896 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14897 | else | |
14898 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14899 | switch (accessibility) | |
14900 | { | |
14901 | case DW_ACCESS_public: | |
14902 | /* The assumed value if neither private nor protected. */ | |
14903 | break; | |
14904 | case DW_ACCESS_private: | |
be2daae6 | 14905 | fp.is_private = 1; |
c191a687 KS |
14906 | break; |
14907 | case DW_ACCESS_protected: | |
be2daae6 | 14908 | fp.is_protected = 1; |
c191a687 KS |
14909 | break; |
14910 | default: | |
b98664d3 | 14911 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14912 | } |
14913 | ||
883fd55a | 14914 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14915 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14916 | else |
be2daae6 | 14917 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14918 | } |
14919 | ||
c906108c SS |
14920 | /* Create the vector of fields, and attach it to the type. */ |
14921 | ||
14922 | static void | |
fba45db2 | 14923 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14924 | struct dwarf2_cu *cu) |
c906108c SS |
14925 | { |
14926 | int nfields = fip->nfields; | |
14927 | ||
14928 | /* Record the field count, allocate space for the array of fields, | |
14929 | and create blank accessibility bitfields if necessary. */ | |
14930 | TYPE_NFIELDS (type) = nfields; | |
14931 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14932 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14933 | |
b4ba55a1 | 14934 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14935 | { |
14936 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14937 | ||
14938 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14939 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14940 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14941 | ||
14942 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14943 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14944 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14945 | ||
774b6a14 TT |
14946 | TYPE_FIELD_IGNORE_BITS (type) = |
14947 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14948 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14949 | } |
14950 | ||
14951 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14952 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14953 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14954 | { |
be2daae6 | 14955 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14956 | unsigned char *pointer; |
c906108c SS |
14957 | |
14958 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14959 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14960 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14961 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14962 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14963 | } |
14964 | ||
2ddeaf8a TT |
14965 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
14966 | { | |
14967 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
14968 | ||
be2daae6 | 14969 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 14970 | { |
be2daae6 TT |
14971 | struct nextfield &field = fip->fields[index]; |
14972 | ||
14973 | if (field.variant.is_discriminant) | |
2ddeaf8a | 14974 | di->discriminant_index = index; |
be2daae6 | 14975 | else if (field.variant.default_branch) |
2ddeaf8a TT |
14976 | di->default_index = index; |
14977 | else | |
be2daae6 | 14978 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
14979 | } |
14980 | } | |
14981 | ||
be2daae6 TT |
14982 | /* Copy the saved-up fields into the field vector. */ |
14983 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14984 | { |
be2daae6 TT |
14985 | struct nextfield &field |
14986 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14987 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14988 | |
be2daae6 TT |
14989 | TYPE_FIELD (type, i) = field.field; |
14990 | switch (field.accessibility) | |
c906108c | 14991 | { |
c5aa993b | 14992 | case DW_ACCESS_private: |
b4ba55a1 | 14993 | if (cu->language != language_ada) |
be2daae6 | 14994 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14995 | break; |
c906108c | 14996 | |
c5aa993b | 14997 | case DW_ACCESS_protected: |
b4ba55a1 | 14998 | if (cu->language != language_ada) |
be2daae6 | 14999 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15000 | break; |
c906108c | 15001 | |
c5aa993b JM |
15002 | case DW_ACCESS_public: |
15003 | break; | |
c906108c | 15004 | |
c5aa993b JM |
15005 | default: |
15006 | /* Unknown accessibility. Complain and treat it as public. */ | |
15007 | { | |
b98664d3 | 15008 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15009 | field.accessibility); |
c5aa993b JM |
15010 | } |
15011 | break; | |
c906108c | 15012 | } |
be2daae6 | 15013 | if (i < fip->baseclasses.size ()) |
c906108c | 15014 | { |
be2daae6 | 15015 | switch (field.virtuality) |
c906108c | 15016 | { |
c5aa993b JM |
15017 | case DW_VIRTUALITY_virtual: |
15018 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15019 | if (cu->language == language_ada) |
a73c6dcd | 15020 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15021 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15022 | break; |
c906108c SS |
15023 | } |
15024 | } | |
c906108c SS |
15025 | } |
15026 | } | |
15027 | ||
7d27a96d TT |
15028 | /* Return true if this member function is a constructor, false |
15029 | otherwise. */ | |
15030 | ||
15031 | static int | |
15032 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15033 | { | |
15034 | const char *fieldname; | |
fe978cb0 | 15035 | const char *type_name; |
7d27a96d TT |
15036 | int len; |
15037 | ||
15038 | if (die->parent == NULL) | |
15039 | return 0; | |
15040 | ||
15041 | if (die->parent->tag != DW_TAG_structure_type | |
15042 | && die->parent->tag != DW_TAG_union_type | |
15043 | && die->parent->tag != DW_TAG_class_type) | |
15044 | return 0; | |
15045 | ||
15046 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15047 | type_name = dwarf2_name (die->parent, cu); |
15048 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15049 | return 0; |
15050 | ||
15051 | len = strlen (fieldname); | |
fe978cb0 PA |
15052 | return (strncmp (fieldname, type_name, len) == 0 |
15053 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15054 | } |
15055 | ||
e35000a7 TBA |
15056 | /* Check if the given VALUE is a recognized enum |
15057 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15058 | Table 7.24. */ | |
15059 | ||
15060 | static bool | |
15061 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15062 | { | |
15063 | switch (value) | |
15064 | { | |
15065 | case DW_DEFAULTED_no: | |
15066 | case DW_DEFAULTED_in_class: | |
15067 | case DW_DEFAULTED_out_of_class: | |
15068 | return true; | |
15069 | } | |
15070 | ||
3142e908 | 15071 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15072 | return false; |
15073 | } | |
15074 | ||
c906108c SS |
15075 | /* Add a member function to the proper fieldlist. */ |
15076 | ||
15077 | static void | |
107d2387 | 15078 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15079 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15080 | { |
518817b3 | 15081 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15082 | struct attribute *attr; |
c906108c | 15083 | int i; |
be2daae6 | 15084 | struct fnfieldlist *flp = nullptr; |
c906108c | 15085 | struct fn_field *fnp; |
15d034d0 | 15086 | const char *fieldname; |
f792889a | 15087 | struct type *this_type; |
60d5a603 | 15088 | enum dwarf_access_attribute accessibility; |
c906108c | 15089 | |
b4ba55a1 | 15090 | if (cu->language == language_ada) |
a73c6dcd | 15091 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15092 | |
2df3850c | 15093 | /* Get name of member function. */ |
39cbfefa DJ |
15094 | fieldname = dwarf2_name (die, cu); |
15095 | if (fieldname == NULL) | |
2df3850c | 15096 | return; |
c906108c | 15097 | |
c906108c | 15098 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15099 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15100 | { |
27bfe10e | 15101 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15102 | { |
15103 | flp = &fip->fnfieldlists[i]; | |
15104 | break; | |
15105 | } | |
c906108c SS |
15106 | } |
15107 | ||
be2daae6 TT |
15108 | /* Create a new fnfieldlist if necessary. */ |
15109 | if (flp == nullptr) | |
c906108c | 15110 | { |
be2daae6 TT |
15111 | fip->fnfieldlists.emplace_back (); |
15112 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15113 | flp->name = fieldname; |
be2daae6 | 15114 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15115 | } |
15116 | ||
be2daae6 TT |
15117 | /* Create a new member function field and add it to the vector of |
15118 | fnfieldlists. */ | |
15119 | flp->fnfields.emplace_back (); | |
15120 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15121 | |
15122 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15123 | if (cu->language == language_cplus) |
be2daae6 TT |
15124 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15125 | die, cu); | |
3da10d80 KS |
15126 | else |
15127 | { | |
1d06ead6 | 15128 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15129 | fnp->physname = physname ? physname : ""; |
15130 | } | |
15131 | ||
c906108c | 15132 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15133 | this_type = read_type_die (die, cu); |
15134 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15135 | { |
f792889a | 15136 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15137 | |
f792889a | 15138 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15139 | of the method itself (TYPE_CODE_METHOD). */ |
15140 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15141 | TYPE_TARGET_TYPE (this_type), |
15142 | TYPE_FIELDS (this_type), | |
15143 | TYPE_NFIELDS (this_type), | |
15144 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15145 | |
15146 | /* Handle static member functions. | |
c5aa993b | 15147 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15148 | member functions. G++ helps GDB by marking the first |
15149 | parameter for non-static member functions (which is the this | |
15150 | pointer) as artificial. We obtain this information from | |
15151 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15152 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15153 | fnp->voffset = VOFFSET_STATIC; |
15154 | } | |
15155 | else | |
b98664d3 | 15156 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15157 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15158 | |
15159 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15160 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15161 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15162 | |
3e43a32a MS |
15163 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15164 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15165 | |
15166 | /* Get accessibility. */ | |
e142c38c | 15167 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15168 | if (attr != nullptr) |
aead7601 | 15169 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15170 | else |
15171 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15172 | switch (accessibility) | |
c906108c | 15173 | { |
60d5a603 JK |
15174 | case DW_ACCESS_private: |
15175 | fnp->is_private = 1; | |
15176 | break; | |
15177 | case DW_ACCESS_protected: | |
15178 | fnp->is_protected = 1; | |
15179 | break; | |
c906108c SS |
15180 | } |
15181 | ||
b02dede2 | 15182 | /* Check for artificial methods. */ |
e142c38c | 15183 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15184 | if (attr && DW_UNSND (attr) != 0) |
15185 | fnp->is_artificial = 1; | |
15186 | ||
e35000a7 TBA |
15187 | /* Check for defaulted methods. */ |
15188 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15189 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15190 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15191 | ||
15192 | /* Check for deleted methods. */ | |
15193 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15194 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15195 | fnp->is_deleted = 1; | |
15196 | ||
7d27a96d TT |
15197 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15198 | ||
0d564a31 | 15199 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15200 | function. For older versions of GCC, this is an offset in the |
15201 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15202 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15203 | to the object address. */ |
15204 | ||
e142c38c | 15205 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15206 | if (attr != nullptr) |
8e19ed76 | 15207 | { |
4fc6c0d5 | 15208 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15209 | { |
aec5aa8b TT |
15210 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15211 | { | |
15212 | /* Old-style GCC. */ | |
15213 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15214 | } | |
15215 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15216 | || (DW_BLOCK (attr)->size > 1 | |
15217 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15218 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15219 | { | |
aec5aa8b TT |
15220 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15221 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15222 | dwarf2_complex_location_expr_complaint (); | |
15223 | else | |
15224 | fnp->voffset /= cu->header.addr_size; | |
15225 | fnp->voffset += 2; | |
15226 | } | |
15227 | else | |
15228 | dwarf2_complex_location_expr_complaint (); | |
15229 | ||
15230 | if (!fnp->fcontext) | |
7e993ebf KS |
15231 | { |
15232 | /* If there is no `this' field and no DW_AT_containing_type, | |
15233 | we cannot actually find a base class context for the | |
15234 | vtable! */ | |
15235 | if (TYPE_NFIELDS (this_type) == 0 | |
15236 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15237 | { | |
b98664d3 | 15238 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15239 | "function \"%s\" (offset %s)"), |
15240 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15241 | } |
15242 | else | |
15243 | { | |
15244 | fnp->fcontext | |
15245 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15246 | } | |
15247 | } | |
aec5aa8b | 15248 | } |
cd6c91b4 | 15249 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15250 | { |
4d3c2250 | 15251 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15252 | } |
15253 | else | |
15254 | { | |
4d3c2250 KB |
15255 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15256 | fieldname); | |
8e19ed76 | 15257 | } |
0d564a31 | 15258 | } |
d48cc9dd DJ |
15259 | else |
15260 | { | |
15261 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15262 | if (attr && DW_UNSND (attr)) | |
15263 | { | |
15264 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15265 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15266 | "but the vtable offset is not specified"), |
9d8780f0 | 15267 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15268 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15269 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15270 | } | |
15271 | } | |
c906108c SS |
15272 | } |
15273 | ||
15274 | /* Create the vector of member function fields, and attach it to the type. */ | |
15275 | ||
15276 | static void | |
fba45db2 | 15277 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15278 | struct dwarf2_cu *cu) |
c906108c | 15279 | { |
b4ba55a1 | 15280 | if (cu->language == language_ada) |
a73c6dcd | 15281 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15282 | |
c906108c SS |
15283 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15284 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15285 | TYPE_ALLOC (type, |
15286 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15287 | |
be2daae6 | 15288 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15289 | { |
be2daae6 | 15290 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15291 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15292 | |
be2daae6 TT |
15293 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15294 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15295 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15296 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15297 | ||
15298 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15299 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15300 | } |
15301 | ||
be2daae6 | 15302 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15303 | } |
15304 | ||
1168df01 JB |
15305 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15306 | language, zero otherwise. */ | |
15307 | static int | |
15308 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15309 | { | |
15310 | static const char vptr[] = "_vptr"; | |
15311 | ||
9c37b5ae TT |
15312 | /* Look for the C++ form of the vtable. */ |
15313 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15314 | return 1; |
15315 | ||
15316 | return 0; | |
15317 | } | |
15318 | ||
c0dd20ea | 15319 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15320 | functions, with the ABI-specified layout. If TYPE describes |
15321 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15322 | |
15323 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15324 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15325 | |
0b92b5bb TT |
15326 | static void |
15327 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15328 | { |
09e2d7c7 | 15329 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15330 | |
15331 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15332 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15333 | return; | |
c0dd20ea DJ |
15334 | |
15335 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15336 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15337 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15338 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15339 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15340 | return; | |
c0dd20ea DJ |
15341 | |
15342 | /* Find the type of the method. */ | |
0b92b5bb | 15343 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15344 | if (pfn_type == NULL |
15345 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15346 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15347 | return; |
c0dd20ea DJ |
15348 | |
15349 | /* Look for the "this" argument. */ | |
15350 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15351 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15352 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15353 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15354 | return; |
c0dd20ea | 15355 | |
09e2d7c7 | 15356 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15357 | new_type = alloc_type (objfile); |
09e2d7c7 | 15358 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15359 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15360 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15361 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15362 | } |
1168df01 | 15363 | |
2b4424c3 TT |
15364 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15365 | appropriate error checking and issuing complaints if there is a | |
15366 | problem. */ | |
15367 | ||
15368 | static ULONGEST | |
15369 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15370 | { | |
15371 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15372 | ||
15373 | if (attr == nullptr) | |
15374 | return 0; | |
15375 | ||
cd6c91b4 | 15376 | if (!attr->form_is_constant ()) |
2b4424c3 | 15377 | { |
b98664d3 | 15378 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15379 | " - DIE at %s [in module %s]"), |
15380 | sect_offset_str (die->sect_off), | |
15381 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15382 | return 0; | |
15383 | } | |
15384 | ||
15385 | ULONGEST align; | |
15386 | if (attr->form == DW_FORM_sdata) | |
15387 | { | |
15388 | LONGEST val = DW_SND (attr); | |
15389 | if (val < 0) | |
15390 | { | |
b98664d3 | 15391 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15392 | " - DIE at %s [in module %s]"), |
15393 | sect_offset_str (die->sect_off), | |
15394 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15395 | return 0; | |
15396 | } | |
15397 | align = val; | |
15398 | } | |
15399 | else | |
15400 | align = DW_UNSND (attr); | |
15401 | ||
15402 | if (align == 0) | |
15403 | { | |
b98664d3 | 15404 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15405 | " - DIE at %s [in module %s]"), |
15406 | sect_offset_str (die->sect_off), | |
15407 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15408 | return 0; | |
15409 | } | |
15410 | if ((align & (align - 1)) != 0) | |
15411 | { | |
b98664d3 | 15412 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15413 | " - DIE at %s [in module %s]"), |
15414 | sect_offset_str (die->sect_off), | |
15415 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15416 | return 0; | |
15417 | } | |
15418 | ||
15419 | return align; | |
15420 | } | |
15421 | ||
15422 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15423 | the alignment for TYPE. */ | |
15424 | ||
15425 | static void | |
15426 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15427 | struct type *type) | |
15428 | { | |
15429 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15430 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15431 | " - DIE at %s [in module %s]"), |
15432 | sect_offset_str (die->sect_off), | |
15433 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15434 | } | |
685b1105 | 15435 | |
e35000a7 TBA |
15436 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15437 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15438 | ||
15439 | static bool | |
15440 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15441 | { | |
15442 | switch (value) | |
15443 | { | |
15444 | case DW_CC_normal: | |
15445 | case DW_CC_pass_by_reference: | |
15446 | case DW_CC_pass_by_value: | |
15447 | return true; | |
15448 | ||
15449 | default: | |
15450 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15451 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15452 | return false; |
15453 | } | |
15454 | } | |
15455 | ||
d0922fcf TBA |
15456 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15457 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15458 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15459 | ||
15460 | static bool | |
15461 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15462 | { | |
15463 | switch (value) | |
15464 | { | |
15465 | case DW_CC_normal: | |
15466 | case DW_CC_program: | |
15467 | case DW_CC_nocall: | |
15468 | return true; | |
15469 | ||
15470 | case DW_CC_GNU_renesas_sh: | |
15471 | case DW_CC_GNU_borland_fastcall_i386: | |
15472 | case DW_CC_GDB_IBM_OpenCL: | |
15473 | return true; | |
15474 | ||
15475 | default: | |
15476 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15477 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15478 | return false; |
15479 | } | |
15480 | } | |
15481 | ||
c906108c | 15482 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15483 | (definition) to create a type for the structure or union. Fill in |
15484 | the type's name and general properties; the members will not be | |
83655187 DE |
15485 | processed until process_structure_scope. A symbol table entry for |
15486 | the type will also not be done until process_structure_scope (assuming | |
15487 | the type has a name). | |
c906108c | 15488 | |
c767944b DJ |
15489 | NOTE: we need to call these functions regardless of whether or not the |
15490 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15491 | structure or union. This gets the type entered into our set of |
83655187 | 15492 | user defined types. */ |
c906108c | 15493 | |
f792889a | 15494 | static struct type * |
134d01f1 | 15495 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15496 | { |
518817b3 | 15497 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15498 | struct type *type; |
15499 | struct attribute *attr; | |
15d034d0 | 15500 | const char *name; |
c906108c | 15501 | |
348e048f DE |
15502 | /* If the definition of this type lives in .debug_types, read that type. |
15503 | Don't follow DW_AT_specification though, that will take us back up | |
15504 | the chain and we want to go down. */ | |
45e58e77 | 15505 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15506 | if (attr != nullptr) |
348e048f | 15507 | { |
ac9ec31b | 15508 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15509 | |
ac9ec31b | 15510 | /* The type's CU may not be the same as CU. |
02142a6c | 15511 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15512 | return set_die_type (die, type, cu); |
15513 | } | |
15514 | ||
c0dd20ea | 15515 | type = alloc_type (objfile); |
c906108c | 15516 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15517 | |
39cbfefa DJ |
15518 | name = dwarf2_name (die, cu); |
15519 | if (name != NULL) | |
c906108c | 15520 | { |
987504bb | 15521 | if (cu->language == language_cplus |
c44af4eb TT |
15522 | || cu->language == language_d |
15523 | || cu->language == language_rust) | |
63d06c5c | 15524 | { |
15d034d0 | 15525 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15526 | |
15527 | /* dwarf2_full_name might have already finished building the DIE's | |
15528 | type. If so, there is no need to continue. */ | |
15529 | if (get_die_type (die, cu) != NULL) | |
15530 | return get_die_type (die, cu); | |
15531 | ||
e86ca25f | 15532 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15533 | } |
15534 | else | |
15535 | { | |
d8151005 DJ |
15536 | /* The name is already allocated along with this objfile, so |
15537 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15538 | TYPE_NAME (type) = name; |
63d06c5c | 15539 | } |
c906108c SS |
15540 | } |
15541 | ||
15542 | if (die->tag == DW_TAG_structure_type) | |
15543 | { | |
15544 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15545 | } | |
15546 | else if (die->tag == DW_TAG_union_type) | |
15547 | { | |
15548 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15549 | } | |
2ddeaf8a TT |
15550 | else if (die->tag == DW_TAG_variant_part) |
15551 | { | |
15552 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15553 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15554 | } | |
c906108c SS |
15555 | else |
15556 | { | |
4753d33b | 15557 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15558 | } |
15559 | ||
0cc2414c TT |
15560 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15561 | TYPE_DECLARED_CLASS (type) = 1; | |
15562 | ||
e35000a7 TBA |
15563 | /* Store the calling convention in the type if it's available in |
15564 | the die. Otherwise the calling convention remains set to | |
15565 | the default value DW_CC_normal. */ | |
15566 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15567 | if (attr != nullptr | |
15568 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15569 | { | |
15570 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15571 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15572 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15573 | } | |
15574 | ||
e142c38c | 15575 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15576 | if (attr != nullptr) |
c906108c | 15577 | { |
cd6c91b4 | 15578 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15579 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15580 | else | |
15581 | { | |
15582 | /* For the moment, dynamic type sizes are not supported | |
15583 | by GDB's struct type. The actual size is determined | |
15584 | on-demand when resolving the type of a given object, | |
15585 | so set the type's length to zero for now. Otherwise, | |
15586 | we record an expression as the length, and that expression | |
15587 | could lead to a very large value, which could eventually | |
15588 | lead to us trying to allocate that much memory when creating | |
15589 | a value of that type. */ | |
15590 | TYPE_LENGTH (type) = 0; | |
15591 | } | |
c906108c SS |
15592 | } |
15593 | else | |
15594 | { | |
15595 | TYPE_LENGTH (type) = 0; | |
15596 | } | |
15597 | ||
2b4424c3 TT |
15598 | maybe_set_alignment (cu, die, type); |
15599 | ||
5230b05a | 15600 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15601 | { |
5230b05a WT |
15602 | /* ICC<14 does not output the required DW_AT_declaration on |
15603 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15604 | TYPE_STUB (type) = 1; |
685b1105 JK |
15605 | } |
15606 | else | |
15607 | TYPE_STUB_SUPPORTED (type) = 1; | |
15608 | ||
dc718098 | 15609 | if (die_is_declaration (die, cu)) |
876cecd0 | 15610 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15611 | else if (attr == NULL && die->child == NULL |
15612 | && producer_is_realview (cu->producer)) | |
15613 | /* RealView does not output the required DW_AT_declaration | |
15614 | on incomplete types. */ | |
15615 | TYPE_STUB (type) = 1; | |
dc718098 | 15616 | |
c906108c SS |
15617 | /* We need to add the type field to the die immediately so we don't |
15618 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15619 | type within the structure itself. */ |
1c379e20 | 15620 | set_die_type (die, type, cu); |
c906108c | 15621 | |
7e314c57 JK |
15622 | /* set_die_type should be already done. */ |
15623 | set_descriptive_type (type, die, cu); | |
15624 | ||
c767944b DJ |
15625 | return type; |
15626 | } | |
15627 | ||
2ddeaf8a TT |
15628 | /* A helper for process_structure_scope that handles a single member |
15629 | DIE. */ | |
15630 | ||
15631 | static void | |
15632 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15633 | struct field_info *fi, | |
15634 | std::vector<struct symbol *> *template_args, | |
15635 | struct dwarf2_cu *cu) | |
15636 | { | |
15637 | if (child_die->tag == DW_TAG_member | |
15638 | || child_die->tag == DW_TAG_variable | |
15639 | || child_die->tag == DW_TAG_variant_part) | |
15640 | { | |
15641 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15642 | should be a DW_TAG_member that is a declaration, but | |
15643 | all versions of G++ as of this writing (so through at | |
15644 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15645 | tags for them instead. */ | |
15646 | dwarf2_add_field (fi, child_die, cu); | |
15647 | } | |
15648 | else if (child_die->tag == DW_TAG_subprogram) | |
15649 | { | |
15650 | /* Rust doesn't have member functions in the C++ sense. | |
15651 | However, it does emit ordinary functions as children | |
15652 | of a struct DIE. */ | |
15653 | if (cu->language == language_rust) | |
15654 | read_func_scope (child_die, cu); | |
15655 | else | |
15656 | { | |
15657 | /* C++ member function. */ | |
15658 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15659 | } | |
15660 | } | |
15661 | else if (child_die->tag == DW_TAG_inheritance) | |
15662 | { | |
15663 | /* C++ base class field. */ | |
15664 | dwarf2_add_field (fi, child_die, cu); | |
15665 | } | |
15666 | else if (type_can_define_types (child_die)) | |
15667 | dwarf2_add_type_defn (fi, child_die, cu); | |
15668 | else if (child_die->tag == DW_TAG_template_type_param | |
15669 | || child_die->tag == DW_TAG_template_value_param) | |
15670 | { | |
15671 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15672 | ||
15673 | if (arg != NULL) | |
15674 | template_args->push_back (arg); | |
15675 | } | |
15676 | else if (child_die->tag == DW_TAG_variant) | |
15677 | { | |
15678 | /* In a variant we want to get the discriminant and also add a | |
15679 | field for our sole member child. */ | |
15680 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15681 | ||
bde09ab7 | 15682 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
15683 | variant_child != NULL; |
15684 | variant_child = sibling_die (variant_child)) | |
15685 | { | |
15686 | if (variant_child->tag == DW_TAG_member) | |
15687 | { | |
15688 | handle_struct_member_die (variant_child, type, fi, | |
15689 | template_args, cu); | |
15690 | /* Only handle the one. */ | |
15691 | break; | |
15692 | } | |
15693 | } | |
15694 | ||
15695 | /* We don't handle this but we might as well report it if we see | |
15696 | it. */ | |
15697 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15698 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15699 | " - DIE at %s [in module %s]"), |
15700 | sect_offset_str (child_die->sect_off), | |
15701 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15702 | ||
15703 | /* The first field was just added, so we can stash the | |
15704 | discriminant there. */ | |
be2daae6 | 15705 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15706 | if (discr == NULL) |
be2daae6 | 15707 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15708 | else |
be2daae6 | 15709 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15710 | } |
15711 | } | |
15712 | ||
c767944b DJ |
15713 | /* Finish creating a structure or union type, including filling in |
15714 | its members and creating a symbol for it. */ | |
15715 | ||
15716 | static void | |
15717 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15718 | { | |
518817b3 | 15719 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15720 | struct die_info *child_die; |
c767944b DJ |
15721 | struct type *type; |
15722 | ||
15723 | type = get_die_type (die, cu); | |
15724 | if (type == NULL) | |
15725 | type = read_structure_type (die, cu); | |
15726 | ||
2ddeaf8a TT |
15727 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15728 | read the discriminant member, so we can record it later in the | |
15729 | discriminant_info. */ | |
15730 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 15731 | sect_offset discr_offset {}; |
3e1d3d8c | 15732 | bool has_template_parameters = false; |
2ddeaf8a TT |
15733 | |
15734 | if (is_variant_part) | |
15735 | { | |
15736 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15737 | if (discr == NULL) | |
15738 | { | |
15739 | /* Maybe it's a univariant form, an extension we support. | |
15740 | In this case arrange not to check the offset. */ | |
15741 | is_variant_part = false; | |
15742 | } | |
cd6c91b4 | 15743 | else if (discr->form_is_ref ()) |
2ddeaf8a TT |
15744 | { |
15745 | struct dwarf2_cu *target_cu = cu; | |
15746 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15747 | ||
15748 | discr_offset = target_die->sect_off; | |
15749 | } | |
15750 | else | |
15751 | { | |
b98664d3 | 15752 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15753 | " - DIE at %s [in module %s]"), |
15754 | sect_offset_str (die->sect_off), | |
15755 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15756 | is_variant_part = false; | |
15757 | } | |
15758 | } | |
15759 | ||
e142c38c | 15760 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15761 | { |
15762 | struct field_info fi; | |
2f4732b0 | 15763 | std::vector<struct symbol *> template_args; |
c906108c | 15764 | |
639d11d3 | 15765 | child_die = die->child; |
c906108c SS |
15766 | |
15767 | while (child_die && child_die->tag) | |
15768 | { | |
2ddeaf8a | 15769 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15770 | |
2ddeaf8a | 15771 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15772 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15773 | |
c906108c SS |
15774 | child_die = sibling_die (child_die); |
15775 | } | |
15776 | ||
34eaf542 | 15777 | /* Attach template arguments to type. */ |
2f4732b0 | 15778 | if (!template_args.empty ()) |
34eaf542 | 15779 | { |
3e1d3d8c | 15780 | has_template_parameters = true; |
34eaf542 | 15781 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15782 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15783 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15784 | = XOBNEWVEC (&objfile->objfile_obstack, |
15785 | struct symbol *, | |
15786 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15787 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15788 | template_args.data (), |
34eaf542 TT |
15789 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15790 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15791 | } |
15792 | ||
c906108c SS |
15793 | /* Attach fields and member functions to the type. */ |
15794 | if (fi.nfields) | |
e7c27a73 | 15795 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15796 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15797 | { |
e7c27a73 | 15798 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15799 | |
c5aa993b | 15800 | /* Get the type which refers to the base class (possibly this |
c906108c | 15801 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15802 | class from the DW_AT_containing_type attribute. This use of |
15803 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15804 | |
e142c38c | 15805 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15806 | { |
e7c27a73 | 15807 | struct type *t = die_containing_type (die, cu); |
c906108c | 15808 | |
ae6ae975 | 15809 | set_type_vptr_basetype (type, t); |
c906108c SS |
15810 | if (type == t) |
15811 | { | |
c906108c SS |
15812 | int i; |
15813 | ||
15814 | /* Our own class provides vtbl ptr. */ | |
15815 | for (i = TYPE_NFIELDS (t) - 1; | |
15816 | i >= TYPE_N_BASECLASSES (t); | |
15817 | --i) | |
15818 | { | |
0d5cff50 | 15819 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15820 | |
1168df01 | 15821 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15822 | { |
ae6ae975 | 15823 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15824 | break; |
15825 | } | |
15826 | } | |
15827 | ||
15828 | /* Complain if virtual function table field not found. */ | |
15829 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15830 | complaint (_("virtual function table pointer " |
3e43a32a | 15831 | "not found when defining class '%s'"), |
e86ca25f | 15832 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15833 | } |
15834 | else | |
15835 | { | |
ae6ae975 | 15836 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15837 | } |
15838 | } | |
f6235d4c | 15839 | else if (cu->producer |
61012eef | 15840 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15841 | { |
15842 | /* The IBM XLC compiler does not provide direct indication | |
15843 | of the containing type, but the vtable pointer is | |
15844 | always named __vfp. */ | |
15845 | ||
15846 | int i; | |
15847 | ||
15848 | for (i = TYPE_NFIELDS (type) - 1; | |
15849 | i >= TYPE_N_BASECLASSES (type); | |
15850 | --i) | |
15851 | { | |
15852 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15853 | { | |
ae6ae975 DE |
15854 | set_type_vptr_fieldno (type, i); |
15855 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15856 | break; |
15857 | } | |
15858 | } | |
15859 | } | |
c906108c | 15860 | } |
98751a41 JK |
15861 | |
15862 | /* Copy fi.typedef_field_list linked list elements content into the | |
15863 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15864 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15865 | { |
be2daae6 | 15866 | int count = fi.typedef_field_list.size (); |
98751a41 | 15867 | |
a0d7a4ff | 15868 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15869 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15870 | = ((struct decl_field *) |
be2daae6 TT |
15871 | TYPE_ALLOC (type, |
15872 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15873 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15874 | |
be2daae6 TT |
15875 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15876 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15877 | } |
c767944b | 15878 | |
883fd55a KS |
15879 | /* Copy fi.nested_types_list linked list elements content into the |
15880 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15881 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15882 | { |
be2daae6 | 15883 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15884 | |
15885 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15886 | TYPE_NESTED_TYPES_ARRAY (type) | |
15887 | = ((struct decl_field *) | |
be2daae6 TT |
15888 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15889 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15890 | |
be2daae6 TT |
15891 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15892 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15893 | } |
c906108c | 15894 | } |
63d06c5c | 15895 | |
bb5ed363 | 15896 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15897 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15898 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15899 | |
90aeadfc DC |
15900 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15901 | snapshots) has been known to create a die giving a declaration | |
15902 | for a class that has, as a child, a die giving a definition for a | |
15903 | nested class. So we have to process our children even if the | |
15904 | current die is a declaration. Normally, of course, a declaration | |
15905 | won't have any children at all. */ | |
134d01f1 | 15906 | |
ca040673 DE |
15907 | child_die = die->child; |
15908 | ||
90aeadfc DC |
15909 | while (child_die != NULL && child_die->tag) |
15910 | { | |
15911 | if (child_die->tag == DW_TAG_member | |
15912 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15913 | || child_die->tag == DW_TAG_inheritance |
15914 | || child_die->tag == DW_TAG_template_value_param | |
15915 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15916 | { |
90aeadfc | 15917 | /* Do nothing. */ |
134d01f1 | 15918 | } |
90aeadfc DC |
15919 | else |
15920 | process_die (child_die, cu); | |
134d01f1 | 15921 | |
90aeadfc | 15922 | child_die = sibling_die (child_die); |
134d01f1 DJ |
15923 | } |
15924 | ||
fa4028e9 JB |
15925 | /* Do not consider external references. According to the DWARF standard, |
15926 | these DIEs are identified by the fact that they have no byte_size | |
15927 | attribute, and a declaration attribute. */ | |
15928 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15929 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15930 | { |
15931 | struct symbol *sym = new_symbol (die, type, cu); | |
15932 | ||
15933 | if (has_template_parameters) | |
15934 | { | |
a776957c TT |
15935 | struct symtab *symtab; |
15936 | if (sym != nullptr) | |
15937 | symtab = symbol_symtab (sym); | |
15938 | else if (cu->line_header != nullptr) | |
15939 | { | |
15940 | /* Any related symtab will do. */ | |
15941 | symtab | |
7ba99d21 | 15942 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15943 | } |
15944 | else | |
15945 | { | |
15946 | symtab = nullptr; | |
15947 | complaint (_("could not find suitable " | |
15948 | "symtab for template parameter" | |
15949 | " - DIE at %s [in module %s]"), | |
15950 | sect_offset_str (die->sect_off), | |
15951 | objfile_name (objfile)); | |
15952 | } | |
15953 | ||
15954 | if (symtab != nullptr) | |
15955 | { | |
15956 | /* Make sure that the symtab is set on the new symbols. | |
15957 | Even though they don't appear in this symtab directly, | |
15958 | other parts of gdb assume that symbols do, and this is | |
15959 | reasonably true. */ | |
15960 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15961 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15962 | } | |
3e1d3d8c TT |
15963 | } |
15964 | } | |
134d01f1 DJ |
15965 | } |
15966 | ||
55426c9d JB |
15967 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15968 | update TYPE using some information only available in DIE's children. */ | |
15969 | ||
15970 | static void | |
15971 | update_enumeration_type_from_children (struct die_info *die, | |
15972 | struct type *type, | |
15973 | struct dwarf2_cu *cu) | |
15974 | { | |
60f7655a | 15975 | struct die_info *child_die; |
55426c9d JB |
15976 | int unsigned_enum = 1; |
15977 | int flag_enum = 1; | |
15978 | ULONGEST mask = 0; | |
55426c9d | 15979 | |
8268c778 | 15980 | auto_obstack obstack; |
55426c9d | 15981 | |
60f7655a DE |
15982 | for (child_die = die->child; |
15983 | child_die != NULL && child_die->tag; | |
15984 | child_die = sibling_die (child_die)) | |
55426c9d JB |
15985 | { |
15986 | struct attribute *attr; | |
15987 | LONGEST value; | |
15988 | const gdb_byte *bytes; | |
15989 | struct dwarf2_locexpr_baton *baton; | |
15990 | const char *name; | |
60f7655a | 15991 | |
55426c9d JB |
15992 | if (child_die->tag != DW_TAG_enumerator) |
15993 | continue; | |
15994 | ||
15995 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15996 | if (attr == NULL) | |
15997 | continue; | |
15998 | ||
15999 | name = dwarf2_name (child_die, cu); | |
16000 | if (name == NULL) | |
16001 | name = "<anonymous enumerator>"; | |
16002 | ||
16003 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16004 | &value, &bytes, &baton); | |
16005 | if (value < 0) | |
16006 | { | |
16007 | unsigned_enum = 0; | |
16008 | flag_enum = 0; | |
16009 | } | |
16010 | else if ((mask & value) != 0) | |
16011 | flag_enum = 0; | |
16012 | else | |
16013 | mask |= value; | |
16014 | ||
16015 | /* If we already know that the enum type is neither unsigned, nor | |
16016 | a flag type, no need to look at the rest of the enumerates. */ | |
16017 | if (!unsigned_enum && !flag_enum) | |
16018 | break; | |
55426c9d JB |
16019 | } |
16020 | ||
16021 | if (unsigned_enum) | |
16022 | TYPE_UNSIGNED (type) = 1; | |
16023 | if (flag_enum) | |
16024 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16025 | } |
16026 | ||
134d01f1 DJ |
16027 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16028 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16029 | |
f792889a | 16030 | static struct type * |
134d01f1 | 16031 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16032 | { |
518817b3 | 16033 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16034 | struct type *type; |
c906108c | 16035 | struct attribute *attr; |
0114d602 | 16036 | const char *name; |
134d01f1 | 16037 | |
348e048f DE |
16038 | /* If the definition of this type lives in .debug_types, read that type. |
16039 | Don't follow DW_AT_specification though, that will take us back up | |
16040 | the chain and we want to go down. */ | |
45e58e77 | 16041 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 16042 | if (attr != nullptr) |
348e048f | 16043 | { |
ac9ec31b | 16044 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16045 | |
ac9ec31b | 16046 | /* The type's CU may not be the same as CU. |
02142a6c | 16047 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16048 | return set_die_type (die, type, cu); |
16049 | } | |
16050 | ||
c906108c SS |
16051 | type = alloc_type (objfile); |
16052 | ||
16053 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16054 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16055 | if (name != NULL) |
e86ca25f | 16056 | TYPE_NAME (type) = name; |
c906108c | 16057 | |
0626fc76 TT |
16058 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16059 | if (attr != NULL) | |
16060 | { | |
16061 | struct type *underlying_type = die_type (die, cu); | |
16062 | ||
16063 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16064 | } | |
16065 | ||
e142c38c | 16066 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16067 | if (attr != nullptr) |
c906108c SS |
16068 | { |
16069 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16070 | } | |
16071 | else | |
16072 | { | |
16073 | TYPE_LENGTH (type) = 0; | |
16074 | } | |
16075 | ||
2b4424c3 TT |
16076 | maybe_set_alignment (cu, die, type); |
16077 | ||
137033e9 JB |
16078 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16079 | declared as private in the package spec, and then defined only | |
16080 | inside the package body. Such types are known as Taft Amendment | |
16081 | Types. When another package uses such a type, an incomplete DIE | |
16082 | may be generated by the compiler. */ | |
02eb380e | 16083 | if (die_is_declaration (die, cu)) |
876cecd0 | 16084 | TYPE_STUB (type) = 1; |
02eb380e | 16085 | |
0626fc76 TT |
16086 | /* Finish the creation of this type by using the enum's children. |
16087 | We must call this even when the underlying type has been provided | |
16088 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16089 | update_enumeration_type_from_children (die, type, cu); |
16090 | ||
0626fc76 TT |
16091 | /* If this type has an underlying type that is not a stub, then we |
16092 | may use its attributes. We always use the "unsigned" attribute | |
16093 | in this situation, because ordinarily we guess whether the type | |
16094 | is unsigned -- but the guess can be wrong and the underlying type | |
16095 | can tell us the reality. However, we defer to a local size | |
16096 | attribute if one exists, because this lets the compiler override | |
16097 | the underlying type if needed. */ | |
16098 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16099 | { | |
16100 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16101 | if (TYPE_LENGTH (type) == 0) | |
16102 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16103 | if (TYPE_RAW_ALIGN (type) == 0 |
16104 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16105 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16106 | } |
16107 | ||
3d567982 TT |
16108 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16109 | ||
f792889a | 16110 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16111 | } |
16112 | ||
16113 | /* Given a pointer to a die which begins an enumeration, process all | |
16114 | the dies that define the members of the enumeration, and create the | |
16115 | symbol for the enumeration type. | |
16116 | ||
16117 | NOTE: We reverse the order of the element list. */ | |
16118 | ||
16119 | static void | |
16120 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16121 | { | |
f792889a | 16122 | struct type *this_type; |
134d01f1 | 16123 | |
f792889a DJ |
16124 | this_type = get_die_type (die, cu); |
16125 | if (this_type == NULL) | |
16126 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16127 | |
639d11d3 | 16128 | if (die->child != NULL) |
c906108c | 16129 | { |
9dc481d3 DE |
16130 | struct die_info *child_die; |
16131 | struct symbol *sym; | |
43816ebc | 16132 | std::vector<struct field> fields; |
15d034d0 | 16133 | const char *name; |
9dc481d3 | 16134 | |
639d11d3 | 16135 | child_die = die->child; |
c906108c SS |
16136 | while (child_die && child_die->tag) |
16137 | { | |
16138 | if (child_die->tag != DW_TAG_enumerator) | |
16139 | { | |
e7c27a73 | 16140 | process_die (child_die, cu); |
c906108c SS |
16141 | } |
16142 | else | |
16143 | { | |
39cbfefa DJ |
16144 | name = dwarf2_name (child_die, cu); |
16145 | if (name) | |
c906108c | 16146 | { |
f792889a | 16147 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 16148 | |
43816ebc TT |
16149 | fields.emplace_back (); |
16150 | struct field &field = fields.back (); | |
c906108c | 16151 | |
43816ebc TT |
16152 | FIELD_NAME (field) = sym->linkage_name (); |
16153 | FIELD_TYPE (field) = NULL; | |
16154 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
16155 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
16156 | } |
16157 | } | |
16158 | ||
16159 | child_die = sibling_die (child_die); | |
16160 | } | |
16161 | ||
43816ebc | 16162 | if (!fields.empty ()) |
c906108c | 16163 | { |
43816ebc | 16164 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 16165 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
16166 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
16167 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
16168 | sizeof (struct field) * fields.size ()); | |
c906108c | 16169 | } |
c906108c | 16170 | } |
134d01f1 | 16171 | |
6c83ed52 TT |
16172 | /* If we are reading an enum from a .debug_types unit, and the enum |
16173 | is a declaration, and the enum is not the signatured type in the | |
16174 | unit, then we do not want to add a symbol for it. Adding a | |
16175 | symbol would in some cases obscure the true definition of the | |
16176 | enum, giving users an incomplete type when the definition is | |
16177 | actually available. Note that we do not want to do this for all | |
16178 | enums which are just declarations, because C++0x allows forward | |
16179 | enum declarations. */ | |
3019eac3 | 16180 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16181 | && die_is_declaration (die, cu)) |
16182 | { | |
52dc124a | 16183 | struct signatured_type *sig_type; |
6c83ed52 | 16184 | |
c0f78cd4 | 16185 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16186 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16187 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16188 | return; |
16189 | } | |
16190 | ||
f792889a | 16191 | new_symbol (die, this_type, cu); |
c906108c SS |
16192 | } |
16193 | ||
16194 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16195 | the DIE's type field. For now, this only handles one dimensional | |
16196 | arrays. */ | |
16197 | ||
f792889a | 16198 | static struct type * |
e7c27a73 | 16199 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16200 | { |
518817b3 | 16201 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16202 | struct die_info *child_die; |
7e314c57 | 16203 | struct type *type; |
c906108c | 16204 | struct type *element_type, *range_type, *index_type; |
c906108c | 16205 | struct attribute *attr; |
15d034d0 | 16206 | const char *name; |
a405673c | 16207 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16208 | unsigned int bit_stride = 0; |
c906108c | 16209 | |
e7c27a73 | 16210 | element_type = die_type (die, cu); |
c906108c | 16211 | |
7e314c57 JK |
16212 | /* The die_type call above may have already set the type for this DIE. */ |
16213 | type = get_die_type (die, cu); | |
16214 | if (type) | |
16215 | return type; | |
16216 | ||
dc53a7ad JB |
16217 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16218 | if (attr != NULL) | |
a405673c JB |
16219 | { |
16220 | int stride_ok; | |
9a49df9d AB |
16221 | struct type *prop_type |
16222 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
a405673c JB |
16223 | |
16224 | byte_stride_prop | |
16225 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16226 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16227 | prop_type); | |
a405673c JB |
16228 | if (!stride_ok) |
16229 | { | |
b98664d3 | 16230 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16231 | " - DIE at %s [in module %s]"), |
16232 | sect_offset_str (die->sect_off), | |
518817b3 | 16233 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16234 | /* Ignore this attribute. We will likely not be able to print |
16235 | arrays of this type correctly, but there is little we can do | |
16236 | to help if we cannot read the attribute's value. */ | |
16237 | byte_stride_prop = NULL; | |
16238 | } | |
16239 | } | |
dc53a7ad JB |
16240 | |
16241 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16242 | if (attr != NULL) | |
16243 | bit_stride = DW_UNSND (attr); | |
16244 | ||
c906108c SS |
16245 | /* Irix 6.2 native cc creates array types without children for |
16246 | arrays with unspecified length. */ | |
639d11d3 | 16247 | if (die->child == NULL) |
c906108c | 16248 | { |
46bf5051 | 16249 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16250 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16251 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16252 | byte_stride_prop, bit_stride); |
f792889a | 16253 | return set_die_type (die, type, cu); |
c906108c SS |
16254 | } |
16255 | ||
791afaa2 | 16256 | std::vector<struct type *> range_types; |
639d11d3 | 16257 | child_die = die->child; |
c906108c SS |
16258 | while (child_die && child_die->tag) |
16259 | { | |
16260 | if (child_die->tag == DW_TAG_subrange_type) | |
16261 | { | |
f792889a | 16262 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16263 | |
f792889a | 16264 | if (child_type != NULL) |
a02abb62 | 16265 | { |
0963b4bd MS |
16266 | /* The range type was succesfully read. Save it for the |
16267 | array type creation. */ | |
791afaa2 | 16268 | range_types.push_back (child_type); |
a02abb62 | 16269 | } |
c906108c SS |
16270 | } |
16271 | child_die = sibling_die (child_die); | |
16272 | } | |
16273 | ||
16274 | /* Dwarf2 dimensions are output from left to right, create the | |
16275 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16276 | |
c906108c | 16277 | type = element_type; |
7ca2d3a3 DL |
16278 | |
16279 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16280 | { | |
16281 | int i = 0; | |
9a619af0 | 16282 | |
791afaa2 | 16283 | while (i < range_types.size ()) |
dc53a7ad | 16284 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16285 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16286 | } |
16287 | else | |
16288 | { | |
791afaa2 | 16289 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16290 | while (ndim-- > 0) |
dc53a7ad | 16291 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16292 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16293 | } |
c906108c | 16294 | |
f5f8a009 EZ |
16295 | /* Understand Dwarf2 support for vector types (like they occur on |
16296 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16297 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16298 | custom vendor extension. The main difference between a regular | |
16299 | array and the vector variant is that vectors are passed by value | |
16300 | to functions. */ | |
e142c38c | 16301 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16302 | if (attr != nullptr) |
ea37ba09 | 16303 | make_vector_type (type); |
f5f8a009 | 16304 | |
dbc98a8b KW |
16305 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16306 | implementation may choose to implement triple vectors using this | |
16307 | attribute. */ | |
16308 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16309 | if (attr != nullptr) |
dbc98a8b KW |
16310 | { |
16311 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16312 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16313 | else | |
b98664d3 | 16314 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16315 | "than the total size of elements")); |
dbc98a8b KW |
16316 | } |
16317 | ||
39cbfefa DJ |
16318 | name = dwarf2_name (die, cu); |
16319 | if (name) | |
16320 | TYPE_NAME (type) = name; | |
6e70227d | 16321 | |
2b4424c3 TT |
16322 | maybe_set_alignment (cu, die, type); |
16323 | ||
0963b4bd | 16324 | /* Install the type in the die. */ |
7e314c57 JK |
16325 | set_die_type (die, type, cu); |
16326 | ||
16327 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16328 | set_descriptive_type (type, die, cu); |
16329 | ||
7e314c57 | 16330 | return type; |
c906108c SS |
16331 | } |
16332 | ||
7ca2d3a3 | 16333 | static enum dwarf_array_dim_ordering |
6e70227d | 16334 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16335 | { |
16336 | struct attribute *attr; | |
16337 | ||
16338 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16339 | ||
435d3d88 | 16340 | if (attr != nullptr) |
aead7601 | 16341 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16342 | |
0963b4bd MS |
16343 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16344 | opposite order to the dwarf2 specification, but data is still | |
16345 | laid out as per normal fortran. | |
7ca2d3a3 | 16346 | |
0963b4bd MS |
16347 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16348 | version checking. */ | |
7ca2d3a3 | 16349 | |
905e0470 PM |
16350 | if (cu->language == language_fortran |
16351 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16352 | { |
16353 | return DW_ORD_row_major; | |
16354 | } | |
16355 | ||
6e70227d | 16356 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16357 | { |
16358 | case array_column_major: | |
16359 | return DW_ORD_col_major; | |
16360 | case array_row_major: | |
16361 | default: | |
16362 | return DW_ORD_row_major; | |
16363 | }; | |
16364 | } | |
16365 | ||
72019c9c | 16366 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16367 | the DIE's type field. */ |
72019c9c | 16368 | |
f792889a | 16369 | static struct type * |
72019c9c GM |
16370 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16371 | { | |
7e314c57 JK |
16372 | struct type *domain_type, *set_type; |
16373 | struct attribute *attr; | |
f792889a | 16374 | |
7e314c57 JK |
16375 | domain_type = die_type (die, cu); |
16376 | ||
16377 | /* The die_type call above may have already set the type for this DIE. */ | |
16378 | set_type = get_die_type (die, cu); | |
16379 | if (set_type) | |
16380 | return set_type; | |
16381 | ||
16382 | set_type = create_set_type (NULL, domain_type); | |
16383 | ||
16384 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16385 | if (attr != nullptr) |
d09039dd | 16386 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16387 | |
2b4424c3 TT |
16388 | maybe_set_alignment (cu, die, set_type); |
16389 | ||
f792889a | 16390 | return set_die_type (die, set_type, cu); |
72019c9c | 16391 | } |
7ca2d3a3 | 16392 | |
0971de02 TT |
16393 | /* A helper for read_common_block that creates a locexpr baton. |
16394 | SYM is the symbol which we are marking as computed. | |
16395 | COMMON_DIE is the DIE for the common block. | |
16396 | COMMON_LOC is the location expression attribute for the common | |
16397 | block itself. | |
16398 | MEMBER_LOC is the location expression attribute for the particular | |
16399 | member of the common block that we are processing. | |
16400 | CU is the CU from which the above come. */ | |
16401 | ||
16402 | static void | |
16403 | mark_common_block_symbol_computed (struct symbol *sym, | |
16404 | struct die_info *common_die, | |
16405 | struct attribute *common_loc, | |
16406 | struct attribute *member_loc, | |
16407 | struct dwarf2_cu *cu) | |
16408 | { | |
518817b3 SM |
16409 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16410 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16411 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16412 | struct dwarf2_locexpr_baton *baton; | |
16413 | gdb_byte *ptr; | |
16414 | unsigned int cu_off; | |
16415 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16416 | LONGEST offset = 0; | |
16417 | ||
16418 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16419 | gdb_assert (common_loc->form_is_block ()); |
16420 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16421 | || member_loc->form_is_constant ()); |
0971de02 | 16422 | |
8d749320 | 16423 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16424 | baton->per_cu = cu->per_cu; |
16425 | gdb_assert (baton->per_cu); | |
16426 | ||
16427 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16428 | ||
cd6c91b4 | 16429 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16430 | { |
16431 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16432 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16433 | } | |
16434 | else | |
16435 | baton->size += DW_BLOCK (member_loc)->size; | |
16436 | ||
224c3ddb | 16437 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16438 | baton->data = ptr; |
16439 | ||
16440 | *ptr++ = DW_OP_call4; | |
9c541725 | 16441 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16442 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16443 | ptr += 4; | |
16444 | ||
cd6c91b4 | 16445 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16446 | { |
16447 | *ptr++ = DW_OP_addr; | |
16448 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16449 | ptr += cu->header.addr_size; | |
16450 | } | |
16451 | else | |
16452 | { | |
16453 | /* We have to copy the data here, because DW_OP_call4 will only | |
16454 | use a DW_AT_location attribute. */ | |
16455 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16456 | ptr += DW_BLOCK (member_loc)->size; | |
16457 | } | |
16458 | ||
16459 | *ptr++ = DW_OP_plus; | |
16460 | gdb_assert (ptr - baton->data == baton->size); | |
16461 | ||
0971de02 | 16462 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16463 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16464 | } |
16465 | ||
4357ac6c TT |
16466 | /* Create appropriate locally-scoped variables for all the |
16467 | DW_TAG_common_block entries. Also create a struct common_block | |
16468 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16469 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16470 | variable names. */ |
c906108c SS |
16471 | |
16472 | static void | |
e7c27a73 | 16473 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16474 | { |
0971de02 TT |
16475 | struct attribute *attr; |
16476 | ||
16477 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16478 | if (attr != nullptr) |
0971de02 TT |
16479 | { |
16480 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16481 | if (attr->form_is_block ()) |
0971de02 TT |
16482 | { |
16483 | /* Ok. */ | |
16484 | } | |
cd6c91b4 | 16485 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16486 | { |
16487 | dwarf2_complex_location_expr_complaint (); | |
16488 | attr = NULL; | |
16489 | } | |
16490 | else | |
16491 | { | |
16492 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16493 | "common block member"); | |
16494 | attr = NULL; | |
16495 | } | |
16496 | } | |
16497 | ||
639d11d3 | 16498 | if (die->child != NULL) |
c906108c | 16499 | { |
518817b3 | 16500 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16501 | struct die_info *child_die; |
16502 | size_t n_entries = 0, size; | |
16503 | struct common_block *common_block; | |
16504 | struct symbol *sym; | |
74ac6d43 | 16505 | |
4357ac6c TT |
16506 | for (child_die = die->child; |
16507 | child_die && child_die->tag; | |
16508 | child_die = sibling_die (child_die)) | |
16509 | ++n_entries; | |
16510 | ||
16511 | size = (sizeof (struct common_block) | |
16512 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16513 | common_block |
16514 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16515 | size); | |
4357ac6c TT |
16516 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16517 | common_block->n_entries = 0; | |
16518 | ||
16519 | for (child_die = die->child; | |
16520 | child_die && child_die->tag; | |
16521 | child_die = sibling_die (child_die)) | |
16522 | { | |
16523 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16524 | symbol scope. */ | |
e7c27a73 | 16525 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16526 | if (sym != NULL) |
16527 | { | |
16528 | struct attribute *member_loc; | |
16529 | ||
16530 | common_block->contents[common_block->n_entries++] = sym; | |
16531 | ||
16532 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16533 | cu); | |
16534 | if (member_loc) | |
16535 | { | |
16536 | /* GDB has handled this for a long time, but it is | |
16537 | not specified by DWARF. It seems to have been | |
16538 | emitted by gfortran at least as recently as: | |
16539 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16540 | complaint (_("Variable in common block has " |
0971de02 | 16541 | "DW_AT_data_member_location " |
9d8780f0 SM |
16542 | "- DIE at %s [in module %s]"), |
16543 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16544 | objfile_name (objfile)); |
0971de02 | 16545 | |
cd6c91b4 | 16546 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16547 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16548 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16549 | || member_loc->form_is_block ()) |
0971de02 | 16550 | { |
435d3d88 | 16551 | if (attr != nullptr) |
0971de02 TT |
16552 | mark_common_block_symbol_computed (sym, die, attr, |
16553 | member_loc, cu); | |
16554 | } | |
16555 | else | |
16556 | dwarf2_complex_location_expr_complaint (); | |
16557 | } | |
16558 | } | |
c906108c | 16559 | } |
4357ac6c TT |
16560 | |
16561 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16562 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16563 | } |
16564 | } | |
16565 | ||
0114d602 | 16566 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16567 | |
0114d602 DJ |
16568 | static struct type * |
16569 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16570 | { |
518817b3 | 16571 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16572 | const char *previous_prefix, *name; |
9219021c | 16573 | int is_anonymous; |
0114d602 DJ |
16574 | struct type *type; |
16575 | ||
16576 | /* For extensions, reuse the type of the original namespace. */ | |
16577 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16578 | { | |
16579 | struct die_info *ext_die; | |
16580 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16581 | |
0114d602 DJ |
16582 | ext_die = dwarf2_extension (die, &ext_cu); |
16583 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16584 | |
16585 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16586 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16587 | return set_die_type (die, type, cu); |
16588 | } | |
9219021c | 16589 | |
e142c38c | 16590 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16591 | |
16592 | /* Now build the name of the current namespace. */ | |
16593 | ||
0114d602 DJ |
16594 | previous_prefix = determine_prefix (die, cu); |
16595 | if (previous_prefix[0] != '\0') | |
16596 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16597 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16598 | |
16599 | /* Create the type. */ | |
19f392bc | 16600 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16601 | |
60531b24 | 16602 | return set_die_type (die, type, cu); |
0114d602 DJ |
16603 | } |
16604 | ||
22cee43f | 16605 | /* Read a namespace scope. */ |
0114d602 DJ |
16606 | |
16607 | static void | |
16608 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16609 | { | |
518817b3 | 16610 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16611 | int is_anonymous; |
9219021c | 16612 | |
5c4e30ca DC |
16613 | /* Add a symbol associated to this if we haven't seen the namespace |
16614 | before. Also, add a using directive if it's an anonymous | |
16615 | namespace. */ | |
9219021c | 16616 | |
f2f0e013 | 16617 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16618 | { |
16619 | struct type *type; | |
16620 | ||
0114d602 | 16621 | type = read_type_die (die, cu); |
e7c27a73 | 16622 | new_symbol (die, type, cu); |
5c4e30ca | 16623 | |
e8e80198 | 16624 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16625 | if (is_anonymous) |
0114d602 DJ |
16626 | { |
16627 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16628 | |
eb1e02fd | 16629 | std::vector<const char *> excludes; |
804d2729 | 16630 | add_using_directive (using_directives (cu), |
22cee43f | 16631 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16632 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16633 | } |
5c4e30ca | 16634 | } |
9219021c | 16635 | |
639d11d3 | 16636 | if (die->child != NULL) |
d9fa45fe | 16637 | { |
639d11d3 | 16638 | struct die_info *child_die = die->child; |
6e70227d | 16639 | |
d9fa45fe DC |
16640 | while (child_die && child_die->tag) |
16641 | { | |
e7c27a73 | 16642 | process_die (child_die, cu); |
d9fa45fe DC |
16643 | child_die = sibling_die (child_die); |
16644 | } | |
16645 | } | |
38d518c9 EZ |
16646 | } |
16647 | ||
f55ee35c JK |
16648 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16649 | imported module. Still we need that type as local Fortran "use ... only" | |
16650 | declaration imports depend on the created type in determine_prefix. */ | |
16651 | ||
16652 | static struct type * | |
16653 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16654 | { | |
518817b3 | 16655 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16656 | const char *module_name; |
f55ee35c JK |
16657 | struct type *type; |
16658 | ||
16659 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16660 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16661 | |
f55ee35c JK |
16662 | return set_die_type (die, type, cu); |
16663 | } | |
16664 | ||
5d7cb8df JK |
16665 | /* Read a Fortran module. */ |
16666 | ||
16667 | static void | |
16668 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16669 | { | |
16670 | struct die_info *child_die = die->child; | |
530e8392 KB |
16671 | struct type *type; |
16672 | ||
16673 | type = read_type_die (die, cu); | |
16674 | new_symbol (die, type, cu); | |
5d7cb8df | 16675 | |
5d7cb8df JK |
16676 | while (child_die && child_die->tag) |
16677 | { | |
16678 | process_die (child_die, cu); | |
16679 | child_die = sibling_die (child_die); | |
16680 | } | |
16681 | } | |
16682 | ||
38d518c9 EZ |
16683 | /* Return the name of the namespace represented by DIE. Set |
16684 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16685 | namespace. */ | |
16686 | ||
16687 | static const char * | |
e142c38c | 16688 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16689 | { |
16690 | struct die_info *current_die; | |
16691 | const char *name = NULL; | |
16692 | ||
16693 | /* Loop through the extensions until we find a name. */ | |
16694 | ||
16695 | for (current_die = die; | |
16696 | current_die != NULL; | |
f2f0e013 | 16697 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16698 | { |
96553a0c DE |
16699 | /* We don't use dwarf2_name here so that we can detect the absence |
16700 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16701 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16702 | |
38d518c9 EZ |
16703 | if (name != NULL) |
16704 | break; | |
16705 | } | |
16706 | ||
16707 | /* Is it an anonymous namespace? */ | |
16708 | ||
16709 | *is_anonymous = (name == NULL); | |
16710 | if (*is_anonymous) | |
2b1dbab0 | 16711 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16712 | |
16713 | return name; | |
d9fa45fe DC |
16714 | } |
16715 | ||
c906108c SS |
16716 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16717 | the user defined type vector. */ | |
16718 | ||
f792889a | 16719 | static struct type * |
e7c27a73 | 16720 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16721 | { |
518817b3 SM |
16722 | struct gdbarch *gdbarch |
16723 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16724 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16725 | struct type *type; |
8b2dbe47 KB |
16726 | struct attribute *attr_byte_size; |
16727 | struct attribute *attr_address_class; | |
16728 | int byte_size, addr_class; | |
7e314c57 JK |
16729 | struct type *target_type; |
16730 | ||
16731 | target_type = die_type (die, cu); | |
c906108c | 16732 | |
7e314c57 JK |
16733 | /* The die_type call above may have already set the type for this DIE. */ |
16734 | type = get_die_type (die, cu); | |
16735 | if (type) | |
16736 | return type; | |
16737 | ||
16738 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16739 | |
e142c38c | 16740 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16741 | if (attr_byte_size) |
16742 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16743 | else |
8b2dbe47 KB |
16744 | byte_size = cu_header->addr_size; |
16745 | ||
e142c38c | 16746 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16747 | if (attr_address_class) |
16748 | addr_class = DW_UNSND (attr_address_class); | |
16749 | else | |
16750 | addr_class = DW_ADDR_none; | |
16751 | ||
2b4424c3 TT |
16752 | ULONGEST alignment = get_alignment (cu, die); |
16753 | ||
16754 | /* If the pointer size, alignment, or address class is different | |
16755 | than the default, create a type variant marked as such and set | |
16756 | the length accordingly. */ | |
16757 | if (TYPE_LENGTH (type) != byte_size | |
16758 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16759 | && alignment != TYPE_RAW_ALIGN (type)) | |
16760 | || addr_class != DW_ADDR_none) | |
c906108c | 16761 | { |
5e2b427d | 16762 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16763 | { |
16764 | int type_flags; | |
16765 | ||
849957d9 | 16766 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16767 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16768 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16769 | == 0); | |
8b2dbe47 KB |
16770 | type = make_type_with_address_space (type, type_flags); |
16771 | } | |
16772 | else if (TYPE_LENGTH (type) != byte_size) | |
16773 | { | |
b98664d3 | 16774 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16775 | } |
2b4424c3 TT |
16776 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16777 | { | |
b98664d3 | 16778 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16779 | " - DIE at %s [in module %s]"), |
16780 | sect_offset_str (die->sect_off), | |
16781 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16782 | } | |
6e70227d | 16783 | else |
9a619af0 MS |
16784 | { |
16785 | /* Should we also complain about unhandled address classes? */ | |
16786 | } | |
c906108c | 16787 | } |
8b2dbe47 KB |
16788 | |
16789 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16790 | set_type_align (type, alignment); |
f792889a | 16791 | return set_die_type (die, type, cu); |
c906108c SS |
16792 | } |
16793 | ||
16794 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16795 | the user defined type vector. */ | |
16796 | ||
f792889a | 16797 | static struct type * |
e7c27a73 | 16798 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16799 | { |
16800 | struct type *type; | |
16801 | struct type *to_type; | |
16802 | struct type *domain; | |
16803 | ||
e7c27a73 DJ |
16804 | to_type = die_type (die, cu); |
16805 | domain = die_containing_type (die, cu); | |
0d5de010 | 16806 | |
7e314c57 JK |
16807 | /* The calls above may have already set the type for this DIE. */ |
16808 | type = get_die_type (die, cu); | |
16809 | if (type) | |
16810 | return type; | |
16811 | ||
0d5de010 DJ |
16812 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16813 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16814 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16815 | { | |
518817b3 SM |
16816 | struct type *new_type |
16817 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16818 | |
16819 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16820 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16821 | TYPE_VARARGS (to_type)); | |
16822 | type = lookup_methodptr_type (new_type); | |
16823 | } | |
0d5de010 DJ |
16824 | else |
16825 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16826 | |
f792889a | 16827 | return set_die_type (die, type, cu); |
c906108c SS |
16828 | } |
16829 | ||
4297a3f0 | 16830 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16831 | the user defined type vector. */ |
16832 | ||
f792889a | 16833 | static struct type * |
4297a3f0 AV |
16834 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16835 | enum type_code refcode) | |
c906108c | 16836 | { |
e7c27a73 | 16837 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16838 | struct type *type, *target_type; |
c906108c SS |
16839 | struct attribute *attr; |
16840 | ||
4297a3f0 AV |
16841 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16842 | ||
7e314c57 JK |
16843 | target_type = die_type (die, cu); |
16844 | ||
16845 | /* The die_type call above may have already set the type for this DIE. */ | |
16846 | type = get_die_type (die, cu); | |
16847 | if (type) | |
16848 | return type; | |
16849 | ||
4297a3f0 | 16850 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16851 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16852 | if (attr != nullptr) |
c906108c SS |
16853 | { |
16854 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16855 | } | |
16856 | else | |
16857 | { | |
107d2387 | 16858 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16859 | } |
2b4424c3 | 16860 | maybe_set_alignment (cu, die, type); |
f792889a | 16861 | return set_die_type (die, type, cu); |
c906108c SS |
16862 | } |
16863 | ||
cf363f18 MW |
16864 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16865 | outputs DWARF type qualifiers that apply to an array, not the | |
16866 | element type. But GDB relies on the array element type to carry | |
16867 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16868 | specification. */ | |
16869 | ||
16870 | static struct type * | |
16871 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16872 | struct type *base_type, int cnst, int voltl) | |
16873 | { | |
16874 | struct type *el_type, *inner_array; | |
16875 | ||
16876 | base_type = copy_type (base_type); | |
16877 | inner_array = base_type; | |
16878 | ||
16879 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16880 | { | |
16881 | TYPE_TARGET_TYPE (inner_array) = | |
16882 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16883 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16884 | } | |
16885 | ||
16886 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16887 | cnst |= TYPE_CONST (el_type); | |
16888 | voltl |= TYPE_VOLATILE (el_type); | |
16889 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16890 | ||
16891 | return set_die_type (die, base_type, cu); | |
16892 | } | |
16893 | ||
f792889a | 16894 | static struct type * |
e7c27a73 | 16895 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16896 | { |
f792889a | 16897 | struct type *base_type, *cv_type; |
c906108c | 16898 | |
e7c27a73 | 16899 | base_type = die_type (die, cu); |
7e314c57 JK |
16900 | |
16901 | /* The die_type call above may have already set the type for this DIE. */ | |
16902 | cv_type = get_die_type (die, cu); | |
16903 | if (cv_type) | |
16904 | return cv_type; | |
16905 | ||
2f608a3a KW |
16906 | /* In case the const qualifier is applied to an array type, the element type |
16907 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16908 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16909 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16910 | |
f792889a DJ |
16911 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16912 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16913 | } |
16914 | ||
f792889a | 16915 | static struct type * |
e7c27a73 | 16916 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16917 | { |
f792889a | 16918 | struct type *base_type, *cv_type; |
c906108c | 16919 | |
e7c27a73 | 16920 | base_type = die_type (die, cu); |
7e314c57 JK |
16921 | |
16922 | /* The die_type call above may have already set the type for this DIE. */ | |
16923 | cv_type = get_die_type (die, cu); | |
16924 | if (cv_type) | |
16925 | return cv_type; | |
16926 | ||
cf363f18 MW |
16927 | /* In case the volatile qualifier is applied to an array type, the |
16928 | element type is so qualified, not the array type (section 6.7.3 | |
16929 | of C99). */ | |
16930 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16931 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16932 | ||
f792889a DJ |
16933 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16934 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16935 | } |
16936 | ||
06d66ee9 TT |
16937 | /* Handle DW_TAG_restrict_type. */ |
16938 | ||
16939 | static struct type * | |
16940 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16941 | { | |
16942 | struct type *base_type, *cv_type; | |
16943 | ||
16944 | base_type = die_type (die, cu); | |
16945 | ||
16946 | /* The die_type call above may have already set the type for this DIE. */ | |
16947 | cv_type = get_die_type (die, cu); | |
16948 | if (cv_type) | |
16949 | return cv_type; | |
16950 | ||
16951 | cv_type = make_restrict_type (base_type); | |
16952 | return set_die_type (die, cv_type, cu); | |
16953 | } | |
16954 | ||
a2c2acaf MW |
16955 | /* Handle DW_TAG_atomic_type. */ |
16956 | ||
16957 | static struct type * | |
16958 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16959 | { | |
16960 | struct type *base_type, *cv_type; | |
16961 | ||
16962 | base_type = die_type (die, cu); | |
16963 | ||
16964 | /* The die_type call above may have already set the type for this DIE. */ | |
16965 | cv_type = get_die_type (die, cu); | |
16966 | if (cv_type) | |
16967 | return cv_type; | |
16968 | ||
16969 | cv_type = make_atomic_type (base_type); | |
16970 | return set_die_type (die, cv_type, cu); | |
16971 | } | |
16972 | ||
c906108c SS |
16973 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16974 | the user defined type vector. It isn't really a user defined type, | |
16975 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16976 | attribute to reference it. */ | |
16977 | ||
f792889a | 16978 | static struct type * |
e7c27a73 | 16979 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16980 | { |
518817b3 | 16981 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 16982 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
16983 | struct type *type, *range_type, *index_type, *char_type; |
16984 | struct attribute *attr; | |
216a7e6b AB |
16985 | struct dynamic_prop prop; |
16986 | bool length_is_constant = true; | |
16987 | LONGEST length; | |
16988 | ||
16989 | /* There are a couple of places where bit sizes might be made use of | |
16990 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16991 | of make use of these. Handling bit sizes that are a multiple of the | |
16992 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16993 | with that problem when we have to. Warn about these attributes being | |
16994 | unsupported, then parse the type and ignore them like we always | |
16995 | have. */ | |
16996 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16997 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16998 | { | |
16999 | static bool warning_printed = false; | |
17000 | if (!warning_printed) | |
17001 | { | |
17002 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17003 | "currently supported on DW_TAG_string_type.")); | |
17004 | warning_printed = true; | |
17005 | } | |
17006 | } | |
c906108c | 17007 | |
e142c38c | 17008 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17009 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17010 | { |
17011 | /* The string length describes the location at which the length of | |
17012 | the string can be found. The size of the length field can be | |
17013 | specified with one of the attributes below. */ | |
17014 | struct type *prop_type; | |
17015 | struct attribute *len | |
17016 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17017 | if (len == nullptr) | |
17018 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17019 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17020 | { |
17021 | /* Pass 0 as the default as we know this attribute is constant | |
17022 | and the default value will not be returned. */ | |
17023 | LONGEST sz = dwarf2_get_attr_constant_value (len, 0); | |
17024 | prop_type = dwarf2_per_cu_int_type (cu->per_cu, sz, true); | |
17025 | } | |
17026 | else | |
17027 | { | |
17028 | /* If the size is not specified then we assume it is the size of | |
17029 | an address on this target. */ | |
17030 | prop_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, true); | |
17031 | } | |
17032 | ||
17033 | /* Convert the attribute into a dynamic property. */ | |
17034 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17035 | length = 1; | |
17036 | else | |
17037 | length_is_constant = false; | |
17038 | } | |
17039 | else if (attr != nullptr) | |
17040 | { | |
17041 | /* This DW_AT_string_length just contains the length with no | |
17042 | indirection. There's no need to create a dynamic property in this | |
17043 | case. Pass 0 for the default value as we know it will not be | |
17044 | returned in this case. */ | |
17045 | length = dwarf2_get_attr_constant_value (attr, 0); | |
17046 | } | |
17047 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17048 | { |
216a7e6b AB |
17049 | /* We don't currently support non-constant byte sizes for strings. */ |
17050 | length = dwarf2_get_attr_constant_value (attr, 1); | |
c906108c SS |
17051 | } |
17052 | else | |
17053 | { | |
216a7e6b AB |
17054 | /* Use 1 as a fallback length if we have nothing else. */ |
17055 | length = 1; | |
c906108c | 17056 | } |
6ccb9162 | 17057 | |
46bf5051 | 17058 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17059 | if (length_is_constant) |
17060 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17061 | else | |
17062 | { | |
17063 | struct dynamic_prop low_bound; | |
17064 | ||
17065 | low_bound.kind = PROP_CONST; | |
17066 | low_bound.data.const_val = 1; | |
17067 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17068 | } | |
3b7538c0 UW |
17069 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17070 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17071 | |
f792889a | 17072 | return set_die_type (die, type, cu); |
c906108c SS |
17073 | } |
17074 | ||
4d804846 JB |
17075 | /* Assuming that DIE corresponds to a function, returns nonzero |
17076 | if the function is prototyped. */ | |
17077 | ||
17078 | static int | |
17079 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17080 | { | |
17081 | struct attribute *attr; | |
17082 | ||
17083 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17084 | if (attr && (DW_UNSND (attr) != 0)) | |
17085 | return 1; | |
17086 | ||
17087 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17088 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17089 | languages that allow unprototyped functions (Eg: Objective C). |
17090 | For all other languages, assume that functions are always | |
17091 | prototyped. */ | |
17092 | if (cu->language != language_c | |
17093 | && cu->language != language_objc | |
17094 | && cu->language != language_opencl) | |
17095 | return 1; | |
17096 | ||
17097 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17098 | prototyped and unprototyped functions; default to prototyped, | |
17099 | since that is more common in modern code (and RealView warns | |
17100 | about unprototyped functions). */ | |
17101 | if (producer_is_realview (cu->producer)) | |
17102 | return 1; | |
17103 | ||
17104 | return 0; | |
17105 | } | |
17106 | ||
c906108c SS |
17107 | /* Handle DIES due to C code like: |
17108 | ||
17109 | struct foo | |
c5aa993b JM |
17110 | { |
17111 | int (*funcp)(int a, long l); | |
17112 | int b; | |
17113 | }; | |
c906108c | 17114 | |
0963b4bd | 17115 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17116 | |
f792889a | 17117 | static struct type * |
e7c27a73 | 17118 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17119 | { |
518817b3 | 17120 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17121 | struct type *type; /* Type that this function returns. */ |
17122 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17123 | struct attribute *attr; |
17124 | ||
e7c27a73 | 17125 | type = die_type (die, cu); |
7e314c57 JK |
17126 | |
17127 | /* The die_type call above may have already set the type for this DIE. */ | |
17128 | ftype = get_die_type (die, cu); | |
17129 | if (ftype) | |
17130 | return ftype; | |
17131 | ||
0c8b41f1 | 17132 | ftype = lookup_function_type (type); |
c906108c | 17133 | |
4d804846 | 17134 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17135 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17136 | |
c055b101 CV |
17137 | /* Store the calling convention in the type if it's available in |
17138 | the subroutine die. Otherwise set the calling convention to | |
17139 | the default value DW_CC_normal. */ | |
17140 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17141 | if (attr != nullptr |
17142 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17143 | TYPE_CALLING_CONVENTION (ftype) | |
17144 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17145 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17146 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17147 | else | |
17148 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17149 | |
743649fd MW |
17150 | /* Record whether the function returns normally to its caller or not |
17151 | if the DWARF producer set that information. */ | |
17152 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17153 | if (attr && (DW_UNSND (attr) != 0)) | |
17154 | TYPE_NO_RETURN (ftype) = 1; | |
17155 | ||
76c10ea2 GM |
17156 | /* We need to add the subroutine type to the die immediately so |
17157 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17158 | declared as the same subroutine type. */ |
76c10ea2 | 17159 | set_die_type (die, ftype, cu); |
6e70227d | 17160 | |
639d11d3 | 17161 | if (die->child != NULL) |
c906108c | 17162 | { |
bb5ed363 | 17163 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17164 | struct die_info *child_die; |
8072405b | 17165 | int nparams, iparams; |
c906108c SS |
17166 | |
17167 | /* Count the number of parameters. | |
17168 | FIXME: GDB currently ignores vararg functions, but knows about | |
17169 | vararg member functions. */ | |
8072405b | 17170 | nparams = 0; |
639d11d3 | 17171 | child_die = die->child; |
c906108c SS |
17172 | while (child_die && child_die->tag) |
17173 | { | |
17174 | if (child_die->tag == DW_TAG_formal_parameter) | |
17175 | nparams++; | |
17176 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17177 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17178 | child_die = sibling_die (child_die); |
17179 | } | |
17180 | ||
17181 | /* Allocate storage for parameters and fill them in. */ | |
17182 | TYPE_NFIELDS (ftype) = nparams; | |
17183 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17184 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17185 | |
8072405b JK |
17186 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17187 | even if we error out during the parameters reading below. */ | |
17188 | for (iparams = 0; iparams < nparams; iparams++) | |
17189 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17190 | ||
17191 | iparams = 0; | |
639d11d3 | 17192 | child_die = die->child; |
c906108c SS |
17193 | while (child_die && child_die->tag) |
17194 | { | |
17195 | if (child_die->tag == DW_TAG_formal_parameter) | |
17196 | { | |
3ce3b1ba PA |
17197 | struct type *arg_type; |
17198 | ||
17199 | /* DWARF version 2 has no clean way to discern C++ | |
17200 | static and non-static member functions. G++ helps | |
17201 | GDB by marking the first parameter for non-static | |
17202 | member functions (which is the this pointer) as | |
17203 | artificial. We pass this information to | |
17204 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17205 | ||
17206 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17207 | 4.5 does not yet generate. */ | |
e142c38c | 17208 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17209 | if (attr != nullptr) |
c906108c SS |
17210 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17211 | else | |
9c37b5ae | 17212 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17213 | arg_type = die_type (child_die, cu); |
17214 | ||
17215 | /* RealView does not mark THIS as const, which the testsuite | |
17216 | expects. GCC marks THIS as const in method definitions, | |
17217 | but not in the class specifications (GCC PR 43053). */ | |
17218 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17219 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17220 | { | |
17221 | int is_this = 0; | |
17222 | struct dwarf2_cu *arg_cu = cu; | |
17223 | const char *name = dwarf2_name (child_die, cu); | |
17224 | ||
17225 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17226 | if (attr != nullptr) |
3ce3b1ba PA |
17227 | { |
17228 | /* If the compiler emits this, use it. */ | |
17229 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17230 | is_this = 1; | |
17231 | } | |
17232 | else if (name && strcmp (name, "this") == 0) | |
17233 | /* Function definitions will have the argument names. */ | |
17234 | is_this = 1; | |
17235 | else if (name == NULL && iparams == 0) | |
17236 | /* Declarations may not have the names, so like | |
17237 | elsewhere in GDB, assume an artificial first | |
17238 | argument is "this". */ | |
17239 | is_this = 1; | |
17240 | ||
17241 | if (is_this) | |
17242 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17243 | arg_type, 0); | |
17244 | } | |
17245 | ||
17246 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17247 | iparams++; |
17248 | } | |
17249 | child_die = sibling_die (child_die); | |
17250 | } | |
17251 | } | |
17252 | ||
76c10ea2 | 17253 | return ftype; |
c906108c SS |
17254 | } |
17255 | ||
f792889a | 17256 | static struct type * |
e7c27a73 | 17257 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17258 | { |
518817b3 | 17259 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17260 | const char *name = NULL; |
3c8e0968 | 17261 | struct type *this_type, *target_type; |
c906108c | 17262 | |
94af9270 | 17263 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17264 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17265 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17266 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17267 | target_type = die_type (die, cu); |
17268 | if (target_type != this_type) | |
17269 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17270 | else | |
17271 | { | |
17272 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17273 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17274 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17275 | "- DIE at %s [in module %s]"), |
17276 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17277 | TYPE_TARGET_TYPE (this_type) = NULL; |
17278 | } | |
f792889a | 17279 | return this_type; |
c906108c SS |
17280 | } |
17281 | ||
9b790ce7 UW |
17282 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17283 | (which may be different from NAME) to the architecture back-end to allow | |
17284 | it to guess the correct format if necessary. */ | |
17285 | ||
17286 | static struct type * | |
17287 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17288 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
17289 | { |
17290 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17291 | const struct floatformat **format; | |
17292 | struct type *type; | |
17293 | ||
17294 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17295 | if (format) | |
103a685e | 17296 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17297 | else |
77b7c781 | 17298 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17299 | |
17300 | return type; | |
17301 | } | |
17302 | ||
eb77c9df AB |
17303 | /* Allocate an integer type of size BITS and name NAME. */ |
17304 | ||
17305 | static struct type * | |
17306 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17307 | int bits, int unsigned_p, const char *name) | |
17308 | { | |
17309 | struct type *type; | |
17310 | ||
17311 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17312 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17313 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17314 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17315 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17316 | type = objfile_type (objfile)->builtin_void; |
17317 | else | |
17318 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17319 | ||
17320 | return type; | |
17321 | } | |
17322 | ||
8bdc1658 AB |
17323 | /* Initialise and return a floating point type of size BITS suitable for |
17324 | use as a component of a complex number. The NAME_HINT is passed through | |
17325 | when initialising the floating point type and is the name of the complex | |
17326 | type. | |
17327 | ||
17328 | As DWARF doesn't currently provide an explicit name for the components | |
17329 | of a complex number, but it can be helpful to have these components | |
17330 | named, we try to select a suitable name based on the size of the | |
17331 | component. */ | |
17332 | static struct type * | |
17333 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17334 | struct objfile *objfile, | |
103a685e TT |
17335 | int bits, const char *name_hint, |
17336 | enum bfd_endian byte_order) | |
8bdc1658 AB |
17337 | { |
17338 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
17339 | struct type *tt = nullptr; | |
17340 | ||
35add35e AB |
17341 | /* Try to find a suitable floating point builtin type of size BITS. |
17342 | We're going to use the name of this type as the name for the complex | |
17343 | target type that we are about to create. */ | |
1db455a7 | 17344 | switch (cu->language) |
8bdc1658 | 17345 | { |
1db455a7 AB |
17346 | case language_fortran: |
17347 | switch (bits) | |
17348 | { | |
17349 | case 32: | |
17350 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17351 | break; | |
17352 | case 64: | |
17353 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17354 | break; | |
17355 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17356 | case 128: | |
17357 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17358 | break; | |
17359 | } | |
8bdc1658 | 17360 | break; |
1db455a7 AB |
17361 | default: |
17362 | switch (bits) | |
17363 | { | |
17364 | case 32: | |
17365 | tt = builtin_type (gdbarch)->builtin_float; | |
17366 | break; | |
17367 | case 64: | |
17368 | tt = builtin_type (gdbarch)->builtin_double; | |
17369 | break; | |
17370 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17371 | case 128: | |
17372 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17373 | break; | |
17374 | } | |
8bdc1658 AB |
17375 | break; |
17376 | } | |
17377 | ||
35add35e AB |
17378 | /* If the type we found doesn't match the size we were looking for, then |
17379 | pretend we didn't find a type at all, the complex target type we | |
17380 | create will then be nameless. */ | |
a12e5744 | 17381 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17382 | tt = nullptr; |
17383 | ||
8bdc1658 | 17384 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 17385 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17386 | } |
17387 | ||
c906108c SS |
17388 | /* Find a representation of a given base type and install |
17389 | it in the TYPE field of the die. */ | |
17390 | ||
f792889a | 17391 | static struct type * |
e7c27a73 | 17392 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17393 | { |
518817b3 | 17394 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17395 | struct type *type; |
17396 | struct attribute *attr; | |
19f392bc | 17397 | int encoding = 0, bits = 0; |
15d034d0 | 17398 | const char *name; |
34877895 | 17399 | gdbarch *arch; |
c906108c | 17400 | |
e142c38c | 17401 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17402 | if (attr != nullptr) |
34877895 | 17403 | encoding = DW_UNSND (attr); |
e142c38c | 17404 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17405 | if (attr != nullptr) |
34877895 | 17406 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17407 | name = dwarf2_name (die, cu); |
6ccb9162 | 17408 | if (!name) |
34877895 | 17409 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
17410 | |
17411 | arch = get_objfile_arch (objfile); | |
17412 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
17413 | ||
34877895 PJ |
17414 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17415 | if (attr) | |
103a685e TT |
17416 | { |
17417 | int endianity = DW_UNSND (attr); | |
17418 | ||
17419 | switch (endianity) | |
17420 | { | |
17421 | case DW_END_big: | |
17422 | byte_order = BFD_ENDIAN_BIG; | |
17423 | break; | |
17424 | case DW_END_little: | |
17425 | byte_order = BFD_ENDIAN_LITTLE; | |
17426 | break; | |
17427 | default: | |
17428 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17429 | break; | |
17430 | } | |
17431 | } | |
6ccb9162 UW |
17432 | |
17433 | switch (encoding) | |
c906108c | 17434 | { |
6ccb9162 UW |
17435 | case DW_ATE_address: |
17436 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17437 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17438 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17439 | break; |
17440 | case DW_ATE_boolean: | |
19f392bc | 17441 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17442 | break; |
17443 | case DW_ATE_complex_float: | |
103a685e TT |
17444 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17445 | byte_order); | |
19f392bc | 17446 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17447 | break; |
17448 | case DW_ATE_decimal_float: | |
19f392bc | 17449 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17450 | break; |
17451 | case DW_ATE_float: | |
103a685e | 17452 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17453 | break; |
17454 | case DW_ATE_signed: | |
eb77c9df | 17455 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17456 | break; |
17457 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17458 | if (cu->language == language_fortran |
17459 | && name | |
61012eef | 17460 | && startswith (name, "character(")) |
19f392bc UW |
17461 | type = init_character_type (objfile, bits, 1, name); |
17462 | else | |
eb77c9df | 17463 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17464 | break; |
17465 | case DW_ATE_signed_char: | |
6e70227d | 17466 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17467 | || cu->language == language_pascal |
17468 | || cu->language == language_fortran) | |
19f392bc UW |
17469 | type = init_character_type (objfile, bits, 0, name); |
17470 | else | |
eb77c9df | 17471 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17472 | break; |
17473 | case DW_ATE_unsigned_char: | |
868a0084 | 17474 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17475 | || cu->language == language_pascal |
c44af4eb TT |
17476 | || cu->language == language_fortran |
17477 | || cu->language == language_rust) | |
19f392bc UW |
17478 | type = init_character_type (objfile, bits, 1, name); |
17479 | else | |
eb77c9df | 17480 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17481 | break; |
75079b2b | 17482 | case DW_ATE_UTF: |
53e710ac | 17483 | { |
53e710ac PA |
17484 | if (bits == 16) |
17485 | type = builtin_type (arch)->builtin_char16; | |
17486 | else if (bits == 32) | |
17487 | type = builtin_type (arch)->builtin_char32; | |
17488 | else | |
17489 | { | |
b98664d3 | 17490 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17491 | bits); |
eb77c9df | 17492 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17493 | } |
17494 | return set_die_type (die, type, cu); | |
17495 | } | |
75079b2b TT |
17496 | break; |
17497 | ||
6ccb9162 | 17498 | default: |
b98664d3 | 17499 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17500 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17501 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17502 | break; |
c906108c | 17503 | } |
6ccb9162 | 17504 | |
0114d602 | 17505 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17506 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17507 | |
2b4424c3 TT |
17508 | maybe_set_alignment (cu, die, type); |
17509 | ||
103a685e | 17510 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17511 | |
f792889a | 17512 | return set_die_type (die, type, cu); |
c906108c SS |
17513 | } |
17514 | ||
80180f79 SA |
17515 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17516 | resulting value of the attribute into struct bound_prop. | |
17517 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17518 | ||
17519 | static int | |
17520 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17521 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17522 | struct type *default_type) | |
80180f79 SA |
17523 | { |
17524 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17525 | struct obstack *obstack |
17526 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17527 | |
9a49df9d AB |
17528 | gdb_assert (default_type != NULL); |
17529 | ||
80180f79 SA |
17530 | if (attr == NULL || prop == NULL) |
17531 | return 0; | |
17532 | ||
4fc6c0d5 | 17533 | if (attr->form_is_block ()) |
80180f79 | 17534 | { |
8d749320 | 17535 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17536 | baton->property_type = default_type; |
80180f79 SA |
17537 | baton->locexpr.per_cu = cu->per_cu; |
17538 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17539 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17540 | switch (attr->name) |
17541 | { | |
17542 | case DW_AT_string_length: | |
17543 | baton->locexpr.is_reference = true; | |
17544 | break; | |
17545 | default: | |
17546 | baton->locexpr.is_reference = false; | |
17547 | break; | |
17548 | } | |
80180f79 SA |
17549 | prop->data.baton = baton; |
17550 | prop->kind = PROP_LOCEXPR; | |
17551 | gdb_assert (prop->data.baton != NULL); | |
17552 | } | |
cd6c91b4 | 17553 | else if (attr->form_is_ref ()) |
80180f79 SA |
17554 | { |
17555 | struct dwarf2_cu *target_cu = cu; | |
17556 | struct die_info *target_die; | |
17557 | struct attribute *target_attr; | |
17558 | ||
17559 | target_die = follow_die_ref (die, attr, &target_cu); | |
17560 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17561 | if (target_attr == NULL) |
17562 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17563 | target_cu); | |
80180f79 SA |
17564 | if (target_attr == NULL) |
17565 | return 0; | |
17566 | ||
df25ebbd | 17567 | switch (target_attr->name) |
80180f79 | 17568 | { |
df25ebbd | 17569 | case DW_AT_location: |
cd6c91b4 | 17570 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17571 | { |
8d749320 | 17572 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17573 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17574 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17575 | prop->data.baton = baton; | |
17576 | prop->kind = PROP_LOCLIST; | |
17577 | gdb_assert (prop->data.baton != NULL); | |
17578 | } | |
4fc6c0d5 | 17579 | else if (target_attr->form_is_block ()) |
df25ebbd | 17580 | { |
8d749320 | 17581 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17582 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17583 | baton->locexpr.per_cu = cu->per_cu; |
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 SA |
17618 | { |
17619 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
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 | ||
11a8b164 AB |
17632 | /* Find an integer type SIZE_IN_BYTES bytes in size and return it. |
17633 | UNSIGNED_P controls if the integer is unsigned or not. */ | |
9a49df9d AB |
17634 | |
17635 | static struct type * | |
11a8b164 AB |
17636 | dwarf2_per_cu_int_type (struct dwarf2_per_cu_data *per_cu, |
17637 | int size_in_bytes, bool unsigned_p) | |
9a49df9d AB |
17638 | { |
17639 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
9a49df9d AB |
17640 | struct type *int_type; |
17641 | ||
17642 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17643 | #define TRY_TYPE(F) \ |
17644 | int_type = (unsigned_p \ | |
17645 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17646 | : objfile_type (objfile)->builtin_ ## F); \ | |
17647 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17648 | return int_type |
17649 | ||
17650 | TRY_TYPE (char); | |
17651 | TRY_TYPE (short); | |
17652 | TRY_TYPE (int); | |
17653 | TRY_TYPE (long); | |
17654 | TRY_TYPE (long_long); | |
17655 | ||
17656 | #undef TRY_TYPE | |
17657 | ||
17658 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17659 | } | |
17660 | ||
11a8b164 AB |
17661 | /* Find an integer type the same size as the address size given in the |
17662 | compilation unit header for PER_CU. UNSIGNED_P controls if the integer | |
17663 | is unsigned or not. */ | |
17664 | ||
17665 | static struct type * | |
17666 | dwarf2_per_cu_addr_sized_int_type (struct dwarf2_per_cu_data *per_cu, | |
17667 | bool unsigned_p) | |
17668 | { | |
17669 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
17670 | return dwarf2_per_cu_int_type (per_cu, addr_size, unsigned_p); | |
17671 | } | |
17672 | ||
b86352cf AB |
17673 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17674 | present (which is valid) then compute the default type based on the | |
17675 | compilation units address size. */ | |
17676 | ||
17677 | static struct type * | |
17678 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17679 | { | |
17680 | struct type *index_type = die_type (die, cu); | |
17681 | ||
17682 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17683 | without specifying a base type. | |
17684 | In that case, the base type must be set to the type of | |
17685 | the lower bound, upper bound or count, in that order, if any of these | |
17686 | three attributes references an object that has a type. | |
17687 | If no base type is found, the Dwarf-2 specifications say that | |
17688 | a signed integer type of size equal to the size of an address should | |
17689 | be used. | |
17690 | For the following C code: `extern char gdb_int [];' | |
17691 | GCC produces an empty range DIE. | |
17692 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17693 | high bound or count are not yet handled by this code. */ | |
17694 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
9a49df9d | 17695 | index_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); |
b86352cf AB |
17696 | |
17697 | return index_type; | |
17698 | } | |
17699 | ||
a02abb62 JB |
17700 | /* Read the given DW_AT_subrange DIE. */ |
17701 | ||
f792889a | 17702 | static struct type * |
a02abb62 JB |
17703 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17704 | { | |
4c9ad8c2 | 17705 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17706 | struct type *range_type; |
17707 | struct attribute *attr; | |
729efb13 | 17708 | struct dynamic_prop low, high; |
4fae6e18 | 17709 | int low_default_is_valid; |
c451ebe5 | 17710 | int high_bound_is_count = 0; |
15d034d0 | 17711 | const char *name; |
d359392f | 17712 | ULONGEST negative_mask; |
e77813c8 | 17713 | |
b86352cf AB |
17714 | orig_base_type = read_subrange_index_type (die, cu); |
17715 | ||
4c9ad8c2 TT |
17716 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17717 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17718 | creating the range type, but we use the result of check_typedef | |
17719 | when examining properties of the type. */ | |
17720 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17721 | |
7e314c57 JK |
17722 | /* The die_type call above may have already set the type for this DIE. */ |
17723 | range_type = get_die_type (die, cu); | |
17724 | if (range_type) | |
17725 | return range_type; | |
17726 | ||
729efb13 SA |
17727 | low.kind = PROP_CONST; |
17728 | high.kind = PROP_CONST; | |
17729 | high.data.const_val = 0; | |
17730 | ||
4fae6e18 JK |
17731 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17732 | omitting DW_AT_lower_bound. */ | |
17733 | switch (cu->language) | |
6e70227d | 17734 | { |
4fae6e18 JK |
17735 | case language_c: |
17736 | case language_cplus: | |
729efb13 | 17737 | low.data.const_val = 0; |
4fae6e18 JK |
17738 | low_default_is_valid = 1; |
17739 | break; | |
17740 | case language_fortran: | |
729efb13 | 17741 | low.data.const_val = 1; |
4fae6e18 JK |
17742 | low_default_is_valid = 1; |
17743 | break; | |
17744 | case language_d: | |
4fae6e18 | 17745 | case language_objc: |
c44af4eb | 17746 | case language_rust: |
729efb13 | 17747 | low.data.const_val = 0; |
4fae6e18 JK |
17748 | low_default_is_valid = (cu->header.version >= 4); |
17749 | break; | |
17750 | case language_ada: | |
17751 | case language_m2: | |
17752 | case language_pascal: | |
729efb13 | 17753 | low.data.const_val = 1; |
4fae6e18 JK |
17754 | low_default_is_valid = (cu->header.version >= 4); |
17755 | break; | |
17756 | default: | |
729efb13 | 17757 | low.data.const_val = 0; |
4fae6e18 JK |
17758 | low_default_is_valid = 0; |
17759 | break; | |
a02abb62 JB |
17760 | } |
17761 | ||
e142c38c | 17762 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17763 | if (attr != nullptr) |
9a49df9d | 17764 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17765 | else if (!low_default_is_valid) |
b98664d3 | 17766 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17767 | "- DIE at %s [in module %s]"), |
17768 | sect_offset_str (die->sect_off), | |
518817b3 | 17769 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17770 | |
506f5c41 TV |
17771 | struct attribute *attr_ub, *attr_count; |
17772 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17773 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17774 | { |
506f5c41 | 17775 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17776 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17777 | { |
c451ebe5 SA |
17778 | /* If bounds are constant do the final calculation here. */ |
17779 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17780 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17781 | else | |
17782 | high_bound_is_count = 1; | |
c2ff108b | 17783 | } |
506f5c41 TV |
17784 | else |
17785 | { | |
17786 | if (attr_ub != NULL) | |
17787 | complaint (_("Unresolved DW_AT_upper_bound " | |
17788 | "- DIE at %s [in module %s]"), | |
17789 | sect_offset_str (die->sect_off), | |
17790 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17791 | if (attr_count != NULL) | |
17792 | complaint (_("Unresolved DW_AT_count " | |
17793 | "- DIE at %s [in module %s]"), | |
17794 | sect_offset_str (die->sect_off), | |
17795 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17796 | } | |
e77813c8 | 17797 | } |
a02abb62 | 17798 | |
4e962e74 TT |
17799 | LONGEST bias = 0; |
17800 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17801 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
4e962e74 TT |
17802 | bias = dwarf2_get_attr_constant_value (bias_attr, 0); |
17803 | ||
dbb9c2b1 JB |
17804 | /* Normally, the DWARF producers are expected to use a signed |
17805 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17806 | But this is unfortunately not always the case, as witnessed | |
17807 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17808 | is used instead. To work around that ambiguity, we treat | |
17809 | the bounds as signed, and thus sign-extend their values, when | |
17810 | the base type is signed. */ | |
6e70227d | 17811 | negative_mask = |
d359392f | 17812 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17813 | if (low.kind == PROP_CONST |
17814 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17815 | low.data.const_val |= negative_mask; | |
17816 | if (high.kind == PROP_CONST | |
17817 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17818 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17819 | |
5bbd8269 AB |
17820 | /* Check for bit and byte strides. */ |
17821 | struct dynamic_prop byte_stride_prop; | |
17822 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17823 | if (attr_byte_stride != nullptr) | |
17824 | { | |
17825 | struct type *prop_type | |
17826 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
17827 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, | |
17828 | prop_type); | |
17829 | } | |
17830 | ||
17831 | struct dynamic_prop bit_stride_prop; | |
17832 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17833 | if (attr_bit_stride != nullptr) | |
17834 | { | |
17835 | /* It only makes sense to have either a bit or byte stride. */ | |
17836 | if (attr_byte_stride != nullptr) | |
17837 | { | |
17838 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17839 | "- DIE at %s [in module %s]"), | |
17840 | sect_offset_str (die->sect_off), | |
17841 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17842 | attr_bit_stride = nullptr; | |
17843 | } | |
17844 | else | |
17845 | { | |
17846 | struct type *prop_type | |
17847 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
17848 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, | |
17849 | prop_type); | |
17850 | } | |
17851 | } | |
17852 | ||
17853 | if (attr_byte_stride != nullptr | |
17854 | || attr_bit_stride != nullptr) | |
17855 | { | |
17856 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17857 | struct dynamic_prop *stride | |
17858 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17859 | ||
17860 | range_type | |
17861 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17862 | &high, bias, stride, byte_stride_p); | |
17863 | } | |
17864 | else | |
17865 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17866 | |
c451ebe5 SA |
17867 | if (high_bound_is_count) |
17868 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17869 | ||
c2ff108b JK |
17870 | /* Ada expects an empty array on no boundary attributes. */ |
17871 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17872 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17873 | |
39cbfefa DJ |
17874 | name = dwarf2_name (die, cu); |
17875 | if (name) | |
17876 | TYPE_NAME (range_type) = name; | |
6e70227d | 17877 | |
e142c38c | 17878 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17879 | if (attr != nullptr) |
a02abb62 JB |
17880 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17881 | ||
2b4424c3 TT |
17882 | maybe_set_alignment (cu, die, range_type); |
17883 | ||
7e314c57 JK |
17884 | set_die_type (die, range_type, cu); |
17885 | ||
17886 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17887 | set_descriptive_type (range_type, die, cu); |
17888 | ||
7e314c57 | 17889 | return range_type; |
a02abb62 | 17890 | } |
6e70227d | 17891 | |
f792889a | 17892 | static struct type * |
81a17f79 JB |
17893 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17894 | { | |
17895 | struct type *type; | |
81a17f79 | 17896 | |
518817b3 SM |
17897 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17898 | NULL); | |
0114d602 | 17899 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17900 | |
74a2f8ff | 17901 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17902 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17903 | such a type, we treat it as a stub, and try to resolve it later on, |
17904 | when needed. */ | |
17905 | if (cu->language == language_ada) | |
17906 | TYPE_STUB (type) = 1; | |
17907 | ||
f792889a | 17908 | return set_die_type (die, type, cu); |
81a17f79 | 17909 | } |
a02abb62 | 17910 | |
639d11d3 DC |
17911 | /* Read a single die and all its descendents. Set the die's sibling |
17912 | field to NULL; set other fields in the die correctly, and set all | |
17913 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17914 | location of the info_ptr after reading all of those dies. PARENT | |
17915 | is the parent of the die in question. */ | |
17916 | ||
17917 | static struct die_info * | |
dee91e82 | 17918 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17919 | const gdb_byte *info_ptr, |
17920 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17921 | struct die_info *parent) |
639d11d3 DC |
17922 | { |
17923 | struct die_info *die; | |
d521ce57 | 17924 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17925 | int has_children; |
17926 | ||
bf6af496 | 17927 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17928 | if (die == NULL) |
17929 | { | |
17930 | *new_info_ptr = cur_ptr; | |
17931 | return NULL; | |
17932 | } | |
93311388 | 17933 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17934 | |
17935 | if (has_children) | |
bf6af496 | 17936 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17937 | else |
17938 | { | |
17939 | die->child = NULL; | |
17940 | *new_info_ptr = cur_ptr; | |
17941 | } | |
17942 | ||
17943 | die->sibling = NULL; | |
17944 | die->parent = parent; | |
17945 | return die; | |
17946 | } | |
17947 | ||
17948 | /* Read a die, all of its descendents, and all of its siblings; set | |
17949 | all of the fields of all of the dies correctly. Arguments are as | |
17950 | in read_die_and_children. */ | |
17951 | ||
17952 | static struct die_info * | |
bf6af496 | 17953 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17954 | const gdb_byte *info_ptr, |
17955 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17956 | struct die_info *parent) |
639d11d3 DC |
17957 | { |
17958 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17959 | const gdb_byte *cur_ptr; |
639d11d3 | 17960 | |
c906108c | 17961 | cur_ptr = info_ptr; |
639d11d3 DC |
17962 | first_die = last_sibling = NULL; |
17963 | ||
17964 | while (1) | |
c906108c | 17965 | { |
639d11d3 | 17966 | struct die_info *die |
dee91e82 | 17967 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17968 | |
1d325ec1 | 17969 | if (die == NULL) |
c906108c | 17970 | { |
639d11d3 DC |
17971 | *new_info_ptr = cur_ptr; |
17972 | return first_die; | |
c906108c | 17973 | } |
1d325ec1 DJ |
17974 | |
17975 | if (!first_die) | |
17976 | first_die = die; | |
c906108c | 17977 | else |
1d325ec1 DJ |
17978 | last_sibling->sibling = die; |
17979 | ||
17980 | last_sibling = die; | |
c906108c | 17981 | } |
c906108c SS |
17982 | } |
17983 | ||
bf6af496 DE |
17984 | /* Read a die, all of its descendents, and all of its siblings; set |
17985 | all of the fields of all of the dies correctly. Arguments are as | |
17986 | in read_die_and_children. | |
17987 | This the main entry point for reading a DIE and all its children. */ | |
17988 | ||
17989 | static struct die_info * | |
17990 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17991 | const gdb_byte *info_ptr, |
17992 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17993 | struct die_info *parent) |
17994 | { | |
17995 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17996 | new_info_ptr, parent); | |
17997 | ||
b4f54984 | 17998 | if (dwarf_die_debug) |
bf6af496 DE |
17999 | { |
18000 | fprintf_unfiltered (gdb_stdlog, | |
18001 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18002 | reader->die_section->get_name (), |
bf6af496 DE |
18003 | (unsigned) (info_ptr - reader->die_section->buffer), |
18004 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18005 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18006 | } |
18007 | ||
18008 | return die; | |
18009 | } | |
18010 | ||
3019eac3 DE |
18011 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18012 | attributes. | |
18013 | The caller is responsible for filling in the extra attributes | |
18014 | and updating (*DIEP)->num_attrs. | |
18015 | Set DIEP to point to a newly allocated die with its information, | |
18016 | except for its child, sibling, and parent fields. | |
18017 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18018 | |
d521ce57 | 18019 | static const gdb_byte * |
3019eac3 | 18020 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18021 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18022 | int *has_children, int num_extra_attrs) |
93311388 | 18023 | { |
b64f50a1 | 18024 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18025 | struct abbrev_info *abbrev; |
18026 | struct die_info *die; | |
18027 | struct dwarf2_cu *cu = reader->cu; | |
18028 | bfd *abfd = reader->abfd; | |
18029 | ||
9c541725 | 18030 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18031 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18032 | info_ptr += bytes_read; | |
18033 | if (!abbrev_number) | |
18034 | { | |
18035 | *diep = NULL; | |
18036 | *has_children = 0; | |
18037 | return info_ptr; | |
18038 | } | |
18039 | ||
685af9cd | 18040 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18041 | if (!abbrev) |
348e048f DE |
18042 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18043 | abbrev_number, | |
18044 | bfd_get_filename (abfd)); | |
18045 | ||
3019eac3 | 18046 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18047 | die->sect_off = sect_off; |
93311388 DE |
18048 | die->tag = abbrev->tag; |
18049 | die->abbrev = abbrev_number; | |
18050 | ||
3019eac3 DE |
18051 | /* Make the result usable. |
18052 | The caller needs to update num_attrs after adding the extra | |
18053 | attributes. */ | |
93311388 DE |
18054 | die->num_attrs = abbrev->num_attrs; |
18055 | ||
18a8505e | 18056 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18057 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18058 | { |
18059 | bool need_reprocess; | |
18060 | info_ptr = | |
18061 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18062 | info_ptr, &need_reprocess); | |
18063 | if (need_reprocess) | |
18064 | indexes_that_need_reprocess.push_back (i); | |
18065 | } | |
18066 | ||
18067 | struct attribute *attr = dwarf2_attr_no_follow (die, DW_AT_str_offsets_base); | |
18068 | if (attr != nullptr) | |
18069 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18070 | |
18a8505e AT |
18071 | auto maybe_addr_base = lookup_addr_base(die); |
18072 | if (maybe_addr_base.has_value ()) | |
18073 | cu->addr_base = *maybe_addr_base; | |
18074 | for (int index : indexes_that_need_reprocess) | |
18075 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 DE |
18076 | *diep = die; |
18077 | *has_children = abbrev->has_children; | |
18078 | return info_ptr; | |
18079 | } | |
18080 | ||
3019eac3 DE |
18081 | /* Read a die and all its attributes. |
18082 | Set DIEP to point to a newly allocated die with its information, | |
18083 | except for its child, sibling, and parent fields. | |
18084 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18085 | ||
d521ce57 | 18086 | static const gdb_byte * |
3019eac3 | 18087 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18088 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18089 | int *has_children) |
18090 | { | |
d521ce57 | 18091 | const gdb_byte *result; |
bf6af496 DE |
18092 | |
18093 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18094 | ||
b4f54984 | 18095 | if (dwarf_die_debug) |
bf6af496 DE |
18096 | { |
18097 | fprintf_unfiltered (gdb_stdlog, | |
18098 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18099 | reader->die_section->get_name (), |
bf6af496 DE |
18100 | (unsigned) (info_ptr - reader->die_section->buffer), |
18101 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18102 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18103 | } |
18104 | ||
18105 | return result; | |
3019eac3 | 18106 | } |
433df2d4 | 18107 | \f |
c906108c | 18108 | |
72bf9492 DJ |
18109 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18110 | symbol for. */ | |
18111 | ||
18112 | static int | |
18113 | is_type_tag_for_partial (int tag) | |
18114 | { | |
18115 | switch (tag) | |
18116 | { | |
18117 | #if 0 | |
18118 | /* Some types that would be reasonable to generate partial symbols for, | |
18119 | that we don't at present. */ | |
18120 | case DW_TAG_array_type: | |
18121 | case DW_TAG_file_type: | |
18122 | case DW_TAG_ptr_to_member_type: | |
18123 | case DW_TAG_set_type: | |
18124 | case DW_TAG_string_type: | |
18125 | case DW_TAG_subroutine_type: | |
18126 | #endif | |
18127 | case DW_TAG_base_type: | |
18128 | case DW_TAG_class_type: | |
680b30c7 | 18129 | case DW_TAG_interface_type: |
72bf9492 DJ |
18130 | case DW_TAG_enumeration_type: |
18131 | case DW_TAG_structure_type: | |
18132 | case DW_TAG_subrange_type: | |
18133 | case DW_TAG_typedef: | |
18134 | case DW_TAG_union_type: | |
18135 | return 1; | |
18136 | default: | |
18137 | return 0; | |
18138 | } | |
18139 | } | |
18140 | ||
18141 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18142 | ||
18143 | static struct partial_die_info * | |
dee91e82 | 18144 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18145 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18146 | { |
dee91e82 | 18147 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18148 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18149 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18150 | unsigned int bytes_read; |
5afb4e99 | 18151 | unsigned int load_all = 0; |
72bf9492 DJ |
18152 | int nesting_level = 1; |
18153 | ||
18154 | parent_die = NULL; | |
18155 | last_die = NULL; | |
18156 | ||
7adf1e79 DE |
18157 | gdb_assert (cu->per_cu != NULL); |
18158 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18159 | load_all = 1; |
18160 | ||
72bf9492 DJ |
18161 | cu->partial_dies |
18162 | = htab_create_alloc_ex (cu->header.length / 12, | |
18163 | partial_die_hash, | |
18164 | partial_die_eq, | |
18165 | NULL, | |
18166 | &cu->comp_unit_obstack, | |
18167 | hashtab_obstack_allocate, | |
18168 | dummy_obstack_deallocate); | |
18169 | ||
72bf9492 DJ |
18170 | while (1) |
18171 | { | |
685af9cd | 18172 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18173 | |
18174 | /* A NULL abbrev means the end of a series of children. */ | |
18175 | if (abbrev == NULL) | |
18176 | { | |
18177 | if (--nesting_level == 0) | |
cd9983dd YQ |
18178 | return first_die; |
18179 | ||
72bf9492 DJ |
18180 | info_ptr += bytes_read; |
18181 | last_die = parent_die; | |
18182 | parent_die = parent_die->die_parent; | |
18183 | continue; | |
18184 | } | |
18185 | ||
98bfdba5 PA |
18186 | /* Check for template arguments. We never save these; if |
18187 | they're seen, we just mark the parent, and go on our way. */ | |
18188 | if (parent_die != NULL | |
18189 | && cu->language == language_cplus | |
18190 | && (abbrev->tag == DW_TAG_template_type_param | |
18191 | || abbrev->tag == DW_TAG_template_value_param)) | |
18192 | { | |
18193 | parent_die->has_template_arguments = 1; | |
18194 | ||
18195 | if (!load_all) | |
18196 | { | |
18197 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18198 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18199 | continue; |
18200 | } | |
18201 | } | |
18202 | ||
0d99eb77 | 18203 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18204 | Skip their other children. */ |
18205 | if (!load_all | |
18206 | && cu->language == language_cplus | |
18207 | && parent_die != NULL | |
18208 | && parent_die->tag == DW_TAG_subprogram) | |
18209 | { | |
dee91e82 | 18210 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18211 | continue; |
18212 | } | |
18213 | ||
5afb4e99 DJ |
18214 | /* Check whether this DIE is interesting enough to save. Normally |
18215 | we would not be interested in members here, but there may be | |
18216 | later variables referencing them via DW_AT_specification (for | |
18217 | static members). */ | |
18218 | if (!load_all | |
18219 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18220 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18221 | && abbrev->tag != DW_TAG_enumerator |
18222 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18223 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18224 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18225 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18226 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18227 | && abbrev->tag != DW_TAG_module |
95554aad | 18228 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18229 | && abbrev->tag != DW_TAG_imported_unit |
18230 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18231 | { |
18232 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18233 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18234 | continue; |
18235 | } | |
18236 | ||
6f06d47b YQ |
18237 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18238 | abbrev); | |
cd9983dd | 18239 | |
48fbe735 | 18240 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18241 | |
18242 | /* This two-pass algorithm for processing partial symbols has a | |
18243 | high cost in cache pressure. Thus, handle some simple cases | |
18244 | here which cover the majority of C partial symbols. DIEs | |
18245 | which neither have specification tags in them, nor could have | |
18246 | specification tags elsewhere pointing at them, can simply be | |
18247 | processed and discarded. | |
18248 | ||
18249 | This segment is also optional; scan_partial_symbols and | |
18250 | add_partial_symbol will handle these DIEs if we chain | |
18251 | them in normally. When compilers which do not emit large | |
18252 | quantities of duplicate debug information are more common, | |
18253 | this code can probably be removed. */ | |
18254 | ||
18255 | /* Any complete simple types at the top level (pretty much all | |
18256 | of them, for a language without namespaces), can be processed | |
18257 | directly. */ | |
18258 | if (parent_die == NULL | |
cd9983dd YQ |
18259 | && pdi.has_specification == 0 |
18260 | && pdi.is_declaration == 0 | |
18261 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18262 | || pdi.tag == DW_TAG_base_type | |
18263 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18264 | { |
cd9983dd | 18265 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18266 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18267 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18268 | psymbol_placement::STATIC, |
1762568f | 18269 | 0, cu->language, objfile); |
cd9983dd | 18270 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18271 | continue; |
18272 | } | |
18273 | ||
d8228535 JK |
18274 | /* The exception for DW_TAG_typedef with has_children above is |
18275 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18276 | type_name_or_error will error on such types later. |
d8228535 JK |
18277 | |
18278 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18279 | it could not find the child DIEs referenced later, this is checked | |
18280 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18281 | ||
cd9983dd | 18282 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18283 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18284 | "- DIE at %s [in module %s]"), |
cd9983dd | 18285 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18286 | |
72bf9492 DJ |
18287 | /* If we're at the second level, and we're an enumerator, and |
18288 | our parent has no specification (meaning possibly lives in a | |
18289 | namespace elsewhere), then we can add the partial symbol now | |
18290 | instead of queueing it. */ | |
cd9983dd | 18291 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18292 | && parent_die != NULL |
18293 | && parent_die->die_parent == NULL | |
18294 | && parent_die->tag == DW_TAG_enumeration_type | |
18295 | && parent_die->has_specification == 0) | |
18296 | { | |
cd9983dd | 18297 | if (pdi.name == NULL) |
b98664d3 | 18298 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18299 | else if (building_psymtab) |
31edb802 | 18300 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18301 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18302 | cu->language == language_cplus |
75aedd27 TT |
18303 | ? psymbol_placement::GLOBAL |
18304 | : psymbol_placement::STATIC, | |
1762568f | 18305 | 0, cu->language, objfile); |
72bf9492 | 18306 | |
cd9983dd | 18307 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18308 | continue; |
18309 | } | |
18310 | ||
cd9983dd | 18311 | struct partial_die_info *part_die |
6f06d47b | 18312 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18313 | |
72bf9492 DJ |
18314 | /* We'll save this DIE so link it in. */ |
18315 | part_die->die_parent = parent_die; | |
18316 | part_die->die_sibling = NULL; | |
18317 | part_die->die_child = NULL; | |
18318 | ||
18319 | if (last_die && last_die == parent_die) | |
18320 | last_die->die_child = part_die; | |
18321 | else if (last_die) | |
18322 | last_die->die_sibling = part_die; | |
18323 | ||
18324 | last_die = part_die; | |
18325 | ||
18326 | if (first_die == NULL) | |
18327 | first_die = part_die; | |
18328 | ||
18329 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18330 | find interesting need to be in the hash table, because we | |
18331 | also have the parent/sibling/child chains; only those that we | |
18332 | might refer to by offset later during partial symbol reading. | |
18333 | ||
18334 | For now this means things that might have be the target of a | |
18335 | DW_AT_specification, DW_AT_abstract_origin, or | |
18336 | DW_AT_extension. DW_AT_extension will refer only to | |
18337 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18338 | many things under the function DIE, but we do not recurse | |
18339 | into function DIEs during partial symbol reading) and | |
18340 | possibly variables as well; DW_AT_specification refers to | |
18341 | declarations. Declarations ought to have the DW_AT_declaration | |
18342 | flag. It happens that GCC forgets to put it in sometimes, but | |
18343 | only for functions, not for types. | |
18344 | ||
18345 | Adding more things than necessary to the hash table is harmless | |
18346 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18347 | wasted time in find_partial_die, when we reread the compilation |
18348 | unit with load_all_dies set. */ | |
72bf9492 | 18349 | |
5afb4e99 | 18350 | if (load_all |
72929c62 | 18351 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18352 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18353 | || abbrev->tag == DW_TAG_variable |
18354 | || abbrev->tag == DW_TAG_namespace | |
18355 | || part_die->is_declaration) | |
18356 | { | |
18357 | void **slot; | |
18358 | ||
18359 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18360 | to_underlying (part_die->sect_off), |
18361 | INSERT); | |
72bf9492 DJ |
18362 | *slot = part_die; |
18363 | } | |
18364 | ||
72bf9492 | 18365 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18366 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18367 | languages we have to, so that we can get at method physnames |
18368 | to infer fully qualified class names, for DW_AT_specification, | |
18369 | and for C++ template arguments. For C++, we also look one level | |
18370 | inside functions to find template arguments (if the name of the | |
18371 | function does not already contain the template arguments). | |
bc30ff58 | 18372 | |
0a4b0913 AB |
18373 | For Ada and Fortran, we need to scan the children of subprograms |
18374 | and lexical blocks as well because these languages allow the | |
18375 | definition of nested entities that could be interesting for the | |
18376 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18377 | if (last_die->has_children |
5afb4e99 DJ |
18378 | && (load_all |
18379 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18380 | || last_die->tag == DW_TAG_module |
72bf9492 | 18381 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18382 | || (cu->language == language_cplus |
18383 | && last_die->tag == DW_TAG_subprogram | |
18384 | && (last_die->name == NULL | |
18385 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18386 | || (cu->language != language_c |
18387 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18388 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18389 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18390 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18391 | || ((cu->language == language_ada |
18392 | || cu->language == language_fortran) | |
bc30ff58 JB |
18393 | && (last_die->tag == DW_TAG_subprogram |
18394 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18395 | { |
18396 | nesting_level++; | |
18397 | parent_die = last_die; | |
18398 | continue; | |
18399 | } | |
18400 | ||
18401 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18402 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18403 | |
18404 | /* Back to the top, do it again. */ | |
18405 | } | |
18406 | } | |
18407 | ||
6f06d47b YQ |
18408 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18409 | struct abbrev_info *abbrev) | |
18410 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18411 | { | |
18412 | } | |
18413 | ||
35cc7ed7 YQ |
18414 | /* Read a minimal amount of information into the minimal die structure. |
18415 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18416 | |
48fbe735 YQ |
18417 | const gdb_byte * |
18418 | partial_die_info::read (const struct die_reader_specs *reader, | |
18419 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18420 | { |
dee91e82 | 18421 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18422 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18423 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18424 | unsigned int i; |
c5aa993b | 18425 | int has_low_pc_attr = 0; |
c906108c | 18426 | int has_high_pc_attr = 0; |
91da1414 | 18427 | int high_pc_relative = 0; |
c906108c | 18428 | |
18a8505e | 18429 | std::vector<struct attribute> attr_vec (abbrev.num_attrs); |
fd0a254f | 18430 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18431 | { |
18a8505e AT |
18432 | bool need_reprocess; |
18433 | info_ptr = read_attribute (reader, &attr_vec[i], &abbrev.attrs[i], | |
18434 | info_ptr, &need_reprocess); | |
18435 | /* String and address offsets that need to do the reprocessing have | |
18436 | already been read at this point, so there is no need to wait until | |
18437 | the loop terminates to do the reprocessing. */ | |
18438 | if (need_reprocess) | |
18439 | read_attribute_reprocess (reader, &attr_vec[i]); | |
18440 | attribute &attr = attr_vec[i]; | |
c906108c | 18441 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18442 | partial symbol table. */ |
c906108c SS |
18443 | switch (attr.name) |
18444 | { | |
18445 | case DW_AT_name: | |
48fbe735 | 18446 | switch (tag) |
71c25dea TT |
18447 | { |
18448 | case DW_TAG_compile_unit: | |
95554aad | 18449 | case DW_TAG_partial_unit: |
348e048f | 18450 | case DW_TAG_type_unit: |
71c25dea TT |
18451 | /* Compilation units have a DW_AT_name that is a filename, not |
18452 | a source language identifier. */ | |
18453 | case DW_TAG_enumeration_type: | |
18454 | case DW_TAG_enumerator: | |
18455 | /* These tags always have simple identifiers already; no need | |
18456 | to canonicalize them. */ | |
48fbe735 | 18457 | name = DW_STRING (&attr); |
71c25dea TT |
18458 | break; |
18459 | default: | |
48fbe735 YQ |
18460 | { |
18461 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18462 | ||
18463 | name | |
18464 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18465 | &objfile->per_bfd->storage_obstack); | |
18466 | } | |
71c25dea TT |
18467 | break; |
18468 | } | |
c906108c | 18469 | break; |
31ef98ae | 18470 | case DW_AT_linkage_name: |
c906108c | 18471 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18472 | /* Note that both forms of linkage name might appear. We |
18473 | assume they will be the same, and we only store the last | |
18474 | one we see. */ | |
48fbe735 | 18475 | linkage_name = DW_STRING (&attr); |
c906108c SS |
18476 | break; |
18477 | case DW_AT_low_pc: | |
18478 | has_low_pc_attr = 1; | |
cd6c91b4 | 18479 | lowpc = attr.value_as_address (); |
c906108c SS |
18480 | break; |
18481 | case DW_AT_high_pc: | |
18482 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18483 | highpc = attr.value_as_address (); |
18484 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18485 | high_pc_relative = 1; |
c906108c SS |
18486 | break; |
18487 | case DW_AT_location: | |
0963b4bd | 18488 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18489 | if (attr.form_is_block ()) |
8e19ed76 | 18490 | { |
48fbe735 | 18491 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18492 | } |
cd6c91b4 | 18493 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18494 | { |
4d3c2250 | 18495 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18496 | } |
18497 | else | |
18498 | { | |
4d3c2250 KB |
18499 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18500 | "partial symbol information"); | |
8e19ed76 | 18501 | } |
c906108c | 18502 | break; |
c906108c | 18503 | case DW_AT_external: |
48fbe735 | 18504 | is_external = DW_UNSND (&attr); |
c906108c SS |
18505 | break; |
18506 | case DW_AT_declaration: | |
48fbe735 | 18507 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18508 | break; |
18509 | case DW_AT_type: | |
48fbe735 | 18510 | has_type = 1; |
c906108c SS |
18511 | break; |
18512 | case DW_AT_abstract_origin: | |
18513 | case DW_AT_specification: | |
72bf9492 | 18514 | case DW_AT_extension: |
48fbe735 YQ |
18515 | has_specification = 1; |
18516 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18517 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18518 | || cu->per_cu->is_dwz); |
c906108c SS |
18519 | break; |
18520 | case DW_AT_sibling: | |
18521 | /* Ignore absolute siblings, they might point outside of | |
18522 | the current compile unit. */ | |
18523 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18524 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18525 | else |
b9502d3f | 18526 | { |
48fbe735 | 18527 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18528 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18529 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18530 | |
18531 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18532 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18533 | else if (sibling_ptr > reader->buffer_end) |
18534 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18535 | else |
48fbe735 | 18536 | sibling = sibling_ptr; |
b9502d3f | 18537 | } |
c906108c | 18538 | break; |
fa4028e9 | 18539 | case DW_AT_byte_size: |
48fbe735 | 18540 | has_byte_size = 1; |
fa4028e9 | 18541 | break; |
ff908ebf | 18542 | case DW_AT_const_value: |
48fbe735 | 18543 | has_const_value = 1; |
ff908ebf | 18544 | break; |
68511cec CES |
18545 | case DW_AT_calling_convention: |
18546 | /* DWARF doesn't provide a way to identify a program's source-level | |
18547 | entry point. DW_AT_calling_convention attributes are only meant | |
18548 | to describe functions' calling conventions. | |
18549 | ||
18550 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18551 | Fortran, and before DWARF 4 DW_CC_program was the only |
18552 | piece of debugging information whose definition refers to | |
18553 | a 'main program' at all, several compilers marked Fortran | |
18554 | main programs with DW_CC_program --- even when those | |
18555 | functions use the standard calling conventions. | |
18556 | ||
18557 | Although DWARF now specifies a way to provide this | |
18558 | information, we support this practice for backward | |
18559 | compatibility. */ | |
68511cec | 18560 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18561 | && cu->language == language_fortran) |
48fbe735 | 18562 | main_subprogram = 1; |
68511cec | 18563 | break; |
481860b3 GB |
18564 | case DW_AT_inline: |
18565 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18566 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18567 | may_be_inlined = 1; |
481860b3 | 18568 | break; |
95554aad TT |
18569 | |
18570 | case DW_AT_import: | |
48fbe735 | 18571 | if (tag == DW_TAG_imported_unit) |
36586728 | 18572 | { |
48fbe735 YQ |
18573 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18574 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18575 | || cu->per_cu->is_dwz); |
18576 | } | |
95554aad TT |
18577 | break; |
18578 | ||
0c1b455e | 18579 | case DW_AT_main_subprogram: |
48fbe735 | 18580 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18581 | break; |
18582 | ||
05caa1d2 TT |
18583 | case DW_AT_ranges: |
18584 | { | |
18585 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18586 | but that requires a full DIE, so instead we just | |
18587 | reimplement it. */ | |
18588 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18589 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18590 | + (need_ranges_base | |
18591 | ? cu->ranges_base | |
18592 | : 0)); | |
18593 | ||
18594 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18595 | .debug_ranges section. */ | |
18596 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18597 | nullptr)) | |
18598 | has_pc_info = 1; | |
18599 | } | |
18600 | break; | |
18601 | ||
c906108c SS |
18602 | default: |
18603 | break; | |
18604 | } | |
18605 | } | |
18606 | ||
10d06d82 TT |
18607 | /* For Ada, if both the name and the linkage name appear, we prefer |
18608 | the latter. This lets "catch exception" work better, regardless | |
18609 | of the order in which the name and linkage name were emitted. | |
18610 | Really, though, this is just a workaround for the fact that gdb | |
18611 | doesn't store both the name and the linkage name. */ | |
18612 | if (cu->language == language_ada && linkage_name != nullptr) | |
18613 | name = linkage_name; | |
18614 | ||
91da1414 | 18615 | if (high_pc_relative) |
48fbe735 | 18616 | highpc += lowpc; |
91da1414 | 18617 | |
9373cf26 JK |
18618 | if (has_low_pc_attr && has_high_pc_attr) |
18619 | { | |
18620 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18621 | eliminate duplicate copies of functions and vtables and such. | |
18622 | The linker will arbitrarily choose one and discard the others. | |
18623 | The AT_*_pc values for such functions refer to local labels in | |
18624 | these sections. If the section from that file was discarded, the | |
18625 | labels are not in the output, so the relocs get a value of 0. | |
18626 | If this is a discarded function, mark the pc bounds as invalid, | |
18627 | so that GDB will ignore it. */ | |
48fbe735 | 18628 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18629 | { |
48fbe735 | 18630 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18631 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18632 | |
b98664d3 | 18633 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18634 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18635 | paddress (gdbarch, lowpc), |
18636 | sect_offset_str (sect_off), | |
9d8780f0 | 18637 | objfile_name (objfile)); |
9373cf26 JK |
18638 | } |
18639 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18640 | else if (lowpc >= highpc) |
9373cf26 | 18641 | { |
48fbe735 | 18642 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18643 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18644 | |
b98664d3 | 18645 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18646 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18647 | paddress (gdbarch, lowpc), |
18648 | paddress (gdbarch, highpc), | |
18649 | sect_offset_str (sect_off), | |
9c541725 | 18650 | objfile_name (objfile)); |
9373cf26 JK |
18651 | } |
18652 | else | |
48fbe735 | 18653 | has_pc_info = 1; |
9373cf26 | 18654 | } |
85cbf3d3 | 18655 | |
c906108c SS |
18656 | return info_ptr; |
18657 | } | |
18658 | ||
72bf9492 DJ |
18659 | /* Find a cached partial DIE at OFFSET in CU. */ |
18660 | ||
d590ff25 YQ |
18661 | struct partial_die_info * |
18662 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18663 | { |
18664 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18665 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18666 | |
9a3c8263 | 18667 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18668 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18669 | to_underlying (sect_off))); |
72bf9492 | 18670 | |
72bf9492 DJ |
18671 | return lookup_die; |
18672 | } | |
18673 | ||
348e048f DE |
18674 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18675 | except in the case of .debug_types DIEs which do not reference | |
18676 | outside their CU (they do however referencing other types via | |
55f1336d | 18677 | DW_FORM_ref_sig8). */ |
72bf9492 | 18678 | |
122cf0f2 | 18679 | static const struct cu_partial_die_info |
9c541725 | 18680 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18681 | { |
518817b3 SM |
18682 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18683 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18684 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18685 | struct dwarf2_per_cu_data *per_cu = NULL; |
18686 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18687 | |
36586728 | 18688 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18689 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18690 | { |
d590ff25 | 18691 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18692 | if (pd != NULL) |
fb816e8b | 18693 | return { cu, pd }; |
0d99eb77 DE |
18694 | /* We missed recording what we needed. |
18695 | Load all dies and try again. */ | |
18696 | per_cu = cu->per_cu; | |
5afb4e99 | 18697 | } |
0d99eb77 DE |
18698 | else |
18699 | { | |
18700 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18701 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18702 | { |
9d8780f0 SM |
18703 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18704 | " external reference to offset %s [in module %s].\n"), | |
18705 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18706 | bfd_get_filename (objfile->obfd)); |
18707 | } | |
9c541725 | 18708 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18709 | dwarf2_per_objfile); |
72bf9492 | 18710 | |
0d99eb77 DE |
18711 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18712 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18713 | |
0d99eb77 | 18714 | per_cu->cu->last_used = 0; |
d590ff25 | 18715 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18716 | } |
5afb4e99 | 18717 | |
dee91e82 DE |
18718 | /* If we didn't find it, and not all dies have been loaded, |
18719 | load them all and try again. */ | |
18720 | ||
5afb4e99 DJ |
18721 | if (pd == NULL && per_cu->load_all_dies == 0) |
18722 | { | |
5afb4e99 | 18723 | per_cu->load_all_dies = 1; |
fd820528 DE |
18724 | |
18725 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18726 | THIS_CU->cu may already be in use. So we can't just free it and | |
18727 | replace its DIEs with the ones we read in. Instead, we leave those | |
18728 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18729 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18730 | set. */ | |
dee91e82 | 18731 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18732 | |
d590ff25 | 18733 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18734 | } |
18735 | ||
18736 | if (pd == NULL) | |
18737 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18738 | _("could not find partial DIE %s " |
3e43a32a | 18739 | "in cache [from module %s]\n"), |
9d8780f0 | 18740 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18741 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18742 | } |
18743 | ||
abc72ce4 DE |
18744 | /* See if we can figure out if the class lives in a namespace. We do |
18745 | this by looking for a member function; its demangled name will | |
18746 | contain namespace info, if there is any. */ | |
18747 | ||
18748 | static void | |
18749 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18750 | struct dwarf2_cu *cu) | |
18751 | { | |
18752 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18753 | what template types look like, because the demangler | |
18754 | frequently doesn't give the same name as the debug info. We | |
18755 | could fix this by only using the demangled name to get the | |
18756 | prefix (but see comment in read_structure_type). */ | |
18757 | ||
18758 | struct partial_die_info *real_pdi; | |
18759 | struct partial_die_info *child_pdi; | |
18760 | ||
18761 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18762 | we should not do this. We'll prepend the parent's fully qualified | |
18763 | name when we create the partial symbol. */ | |
18764 | ||
18765 | real_pdi = struct_pdi; | |
18766 | while (real_pdi->has_specification) | |
fb816e8b | 18767 | { |
122cf0f2 AB |
18768 | auto res = find_partial_die (real_pdi->spec_offset, |
18769 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18770 | real_pdi = res.pdi; |
18771 | cu = res.cu; | |
18772 | } | |
abc72ce4 DE |
18773 | |
18774 | if (real_pdi->die_parent != NULL) | |
18775 | return; | |
18776 | ||
18777 | for (child_pdi = struct_pdi->die_child; | |
18778 | child_pdi != NULL; | |
18779 | child_pdi = child_pdi->die_sibling) | |
18780 | { | |
18781 | if (child_pdi->tag == DW_TAG_subprogram | |
18782 | && child_pdi->linkage_name != NULL) | |
18783 | { | |
43816ebc TT |
18784 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18785 | (language_class_name_from_physname (cu->language_defn, | |
18786 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18787 | if (actual_class_name != NULL) |
18788 | { | |
518817b3 | 18789 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18790 | struct_pdi->name |
021887d8 | 18791 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 18792 | actual_class_name.get ()); |
abc72ce4 DE |
18793 | } |
18794 | break; | |
18795 | } | |
18796 | } | |
18797 | } | |
18798 | ||
52356b79 YQ |
18799 | void |
18800 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18801 | { |
abc72ce4 DE |
18802 | /* Once we've fixed up a die, there's no point in doing so again. |
18803 | This also avoids a memory leak if we were to call | |
18804 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18805 | if (fixup_called) |
abc72ce4 DE |
18806 | return; |
18807 | ||
72bf9492 DJ |
18808 | /* If we found a reference attribute and the DIE has no name, try |
18809 | to find a name in the referred to DIE. */ | |
18810 | ||
52356b79 | 18811 | if (name == NULL && has_specification) |
72bf9492 DJ |
18812 | { |
18813 | struct partial_die_info *spec_die; | |
72bf9492 | 18814 | |
122cf0f2 | 18815 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18816 | spec_die = res.pdi; |
18817 | cu = res.cu; | |
72bf9492 | 18818 | |
52356b79 | 18819 | spec_die->fixup (cu); |
72bf9492 DJ |
18820 | |
18821 | if (spec_die->name) | |
18822 | { | |
52356b79 | 18823 | name = spec_die->name; |
72bf9492 DJ |
18824 | |
18825 | /* Copy DW_AT_external attribute if it is set. */ | |
18826 | if (spec_die->is_external) | |
52356b79 | 18827 | is_external = spec_die->is_external; |
72bf9492 DJ |
18828 | } |
18829 | } | |
18830 | ||
18831 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18832 | |
52356b79 YQ |
18833 | if (name == NULL && tag == DW_TAG_namespace) |
18834 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18835 | |
abc72ce4 DE |
18836 | /* If there is no parent die to provide a namespace, and there are |
18837 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18838 | name. */ |
abc72ce4 | 18839 | if (cu->language == language_cplus |
fd5866f6 | 18840 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18841 | && die_parent == NULL |
18842 | && has_children | |
18843 | && (tag == DW_TAG_class_type | |
18844 | || tag == DW_TAG_structure_type | |
18845 | || tag == DW_TAG_union_type)) | |
18846 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18847 | |
53832f31 TT |
18848 | /* GCC might emit a nameless struct or union that has a linkage |
18849 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18850 | if (name == NULL |
18851 | && (tag == DW_TAG_class_type | |
18852 | || tag == DW_TAG_interface_type | |
18853 | || tag == DW_TAG_structure_type | |
18854 | || tag == DW_TAG_union_type) | |
18855 | && linkage_name != NULL) | |
53832f31 | 18856 | { |
43816ebc TT |
18857 | gdb::unique_xmalloc_ptr<char> demangled |
18858 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18859 | if (demangled != nullptr) | |
53832f31 | 18860 | { |
96408a79 SA |
18861 | const char *base; |
18862 | ||
18863 | /* Strip any leading namespaces/classes, keep only the base name. | |
18864 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18865 | base = strrchr (demangled.get (), ':'); |
18866 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18867 | base++; |
18868 | else | |
43816ebc | 18869 | base = demangled.get (); |
96408a79 | 18870 | |
518817b3 | 18871 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
021887d8 | 18872 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, base); |
53832f31 TT |
18873 | } |
18874 | } | |
18875 | ||
52356b79 | 18876 | fixup_called = 1; |
72bf9492 DJ |
18877 | } |
18878 | ||
18a8505e AT |
18879 | /* Process the attributes that had to be skipped in the first round. These |
18880 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18881 | They could not have been processed in the first round, because at the time | |
18882 | the values of str_offsets_base or addr_base may not have been known. */ | |
18883 | void read_attribute_reprocess (const struct die_reader_specs *reader, | |
18884 | struct attribute *attr) | |
18885 | { | |
18886 | struct dwarf2_cu *cu = reader->cu; | |
18887 | switch (attr->form) | |
18888 | { | |
18889 | case DW_FORM_addrx: | |
18890 | case DW_FORM_GNU_addr_index: | |
18891 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18892 | break; | |
18893 | case DW_FORM_strx: | |
18894 | case DW_FORM_strx1: | |
18895 | case DW_FORM_strx2: | |
18896 | case DW_FORM_strx3: | |
18897 | case DW_FORM_strx4: | |
18898 | case DW_FORM_GNU_str_index: | |
18899 | { | |
18900 | unsigned int str_index = DW_UNSND (attr); | |
18901 | if (reader->dwo_file != NULL) | |
18902 | { | |
18903 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18904 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18905 | } | |
18906 | else | |
18907 | { | |
18908 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18909 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18910 | } | |
18911 | break; | |
18912 | } | |
18913 | default: | |
18914 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18915 | } | |
18916 | } | |
18917 | ||
a8329558 | 18918 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18919 | |
d521ce57 | 18920 | static const gdb_byte * |
dee91e82 DE |
18921 | read_attribute_value (const struct die_reader_specs *reader, |
18922 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18923 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18924 | bool *need_reprocess) | |
c906108c | 18925 | { |
dee91e82 | 18926 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18927 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18928 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18929 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18930 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18931 | bfd *abfd = reader->abfd; |
e7c27a73 | 18932 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18933 | unsigned int bytes_read; |
18934 | struct dwarf_block *blk; | |
18a8505e | 18935 | *need_reprocess = false; |
c906108c | 18936 | |
aead7601 | 18937 | attr->form = (enum dwarf_form) form; |
a8329558 | 18938 | switch (form) |
c906108c | 18939 | { |
c906108c | 18940 | case DW_FORM_ref_addr: |
ae411497 | 18941 | if (cu->header.version == 2) |
4568ecf9 | 18942 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 18943 | else |
4568ecf9 DE |
18944 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
18945 | &cu->header, &bytes_read); | |
ae411497 TT |
18946 | info_ptr += bytes_read; |
18947 | break; | |
36586728 TT |
18948 | case DW_FORM_GNU_ref_alt: |
18949 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18950 | info_ptr += bytes_read; | |
18951 | break; | |
ae411497 | 18952 | case DW_FORM_addr: |
e7c27a73 | 18953 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 18954 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18955 | info_ptr += bytes_read; |
c906108c SS |
18956 | break; |
18957 | case DW_FORM_block2: | |
7b5a2f43 | 18958 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18959 | blk->size = read_2_bytes (abfd, info_ptr); |
18960 | info_ptr += 2; | |
18961 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18962 | info_ptr += blk->size; | |
18963 | DW_BLOCK (attr) = blk; | |
18964 | break; | |
18965 | case DW_FORM_block4: | |
7b5a2f43 | 18966 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18967 | blk->size = read_4_bytes (abfd, info_ptr); |
18968 | info_ptr += 4; | |
18969 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18970 | info_ptr += blk->size; | |
18971 | DW_BLOCK (attr) = blk; | |
18972 | break; | |
18973 | case DW_FORM_data2: | |
18974 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18975 | info_ptr += 2; | |
18976 | break; | |
18977 | case DW_FORM_data4: | |
18978 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18979 | info_ptr += 4; | |
18980 | break; | |
18981 | case DW_FORM_data8: | |
18982 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18983 | info_ptr += 8; | |
18984 | break; | |
0224619f JK |
18985 | case DW_FORM_data16: |
18986 | blk = dwarf_alloc_block (cu); | |
18987 | blk->size = 16; | |
18988 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18989 | info_ptr += 16; | |
18990 | DW_BLOCK (attr) = blk; | |
18991 | break; | |
2dc7f7b3 TT |
18992 | case DW_FORM_sec_offset: |
18993 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18994 | info_ptr += bytes_read; | |
18995 | break; | |
c906108c | 18996 | case DW_FORM_string: |
9b1c24c8 | 18997 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18998 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18999 | info_ptr += bytes_read; |
19000 | break; | |
4bdf3d34 | 19001 | case DW_FORM_strp: |
36586728 TT |
19002 | if (!cu->per_cu->is_dwz) |
19003 | { | |
ed2dc618 SM |
19004 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19005 | abfd, info_ptr, cu_header, | |
36586728 TT |
19006 | &bytes_read); |
19007 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19008 | info_ptr += bytes_read; | |
19009 | break; | |
19010 | } | |
19011 | /* FALLTHROUGH */ | |
43988095 JK |
19012 | case DW_FORM_line_strp: |
19013 | if (!cu->per_cu->is_dwz) | |
19014 | { | |
ed2dc618 SM |
19015 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19016 | abfd, info_ptr, | |
43988095 JK |
19017 | cu_header, &bytes_read); |
19018 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19019 | info_ptr += bytes_read; | |
19020 | break; | |
19021 | } | |
19022 | /* FALLTHROUGH */ | |
36586728 TT |
19023 | case DW_FORM_GNU_strp_alt: |
19024 | { | |
ed2dc618 | 19025 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19026 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19027 | &bytes_read); | |
19028 | ||
ed2dc618 SM |
19029 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19030 | dwz, str_offset); | |
36586728 TT |
19031 | DW_STRING_IS_CANONICAL (attr) = 0; |
19032 | info_ptr += bytes_read; | |
19033 | } | |
4bdf3d34 | 19034 | break; |
2dc7f7b3 | 19035 | case DW_FORM_exprloc: |
c906108c | 19036 | case DW_FORM_block: |
7b5a2f43 | 19037 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19038 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19039 | info_ptr += bytes_read; | |
19040 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19041 | info_ptr += blk->size; | |
19042 | DW_BLOCK (attr) = blk; | |
19043 | break; | |
19044 | case DW_FORM_block1: | |
7b5a2f43 | 19045 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19046 | blk->size = read_1_byte (abfd, info_ptr); |
19047 | info_ptr += 1; | |
19048 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19049 | info_ptr += blk->size; | |
19050 | DW_BLOCK (attr) = blk; | |
19051 | break; | |
19052 | case DW_FORM_data1: | |
19053 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19054 | info_ptr += 1; | |
19055 | break; | |
19056 | case DW_FORM_flag: | |
19057 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19058 | info_ptr += 1; | |
19059 | break; | |
2dc7f7b3 TT |
19060 | case DW_FORM_flag_present: |
19061 | DW_UNSND (attr) = 1; | |
19062 | break; | |
c906108c SS |
19063 | case DW_FORM_sdata: |
19064 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19065 | info_ptr += bytes_read; | |
19066 | break; | |
19067 | case DW_FORM_udata: | |
18a8505e | 19068 | case DW_FORM_rnglistx: |
c906108c SS |
19069 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19070 | info_ptr += bytes_read; | |
19071 | break; | |
19072 | case DW_FORM_ref1: | |
9c541725 | 19073 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19074 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19075 | info_ptr += 1; |
19076 | break; | |
19077 | case DW_FORM_ref2: | |
9c541725 | 19078 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19079 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19080 | info_ptr += 2; |
19081 | break; | |
19082 | case DW_FORM_ref4: | |
9c541725 | 19083 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19084 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19085 | info_ptr += 4; |
19086 | break; | |
613e1657 | 19087 | case DW_FORM_ref8: |
9c541725 | 19088 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19089 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19090 | info_ptr += 8; |
19091 | break; | |
55f1336d | 19092 | case DW_FORM_ref_sig8: |
ac9ec31b | 19093 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19094 | info_ptr += 8; |
19095 | break; | |
c906108c | 19096 | case DW_FORM_ref_udata: |
9c541725 | 19097 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19098 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19099 | info_ptr += bytes_read; |
19100 | break; | |
c906108c | 19101 | case DW_FORM_indirect: |
a8329558 KW |
19102 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19103 | info_ptr += bytes_read; | |
43988095 JK |
19104 | if (form == DW_FORM_implicit_const) |
19105 | { | |
19106 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19107 | info_ptr += bytes_read; | |
19108 | } | |
19109 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19110 | info_ptr, need_reprocess); |
43988095 JK |
19111 | break; |
19112 | case DW_FORM_implicit_const: | |
19113 | DW_SND (attr) = implicit_const; | |
a8329558 | 19114 | break; |
336d760d | 19115 | case DW_FORM_addrx: |
3019eac3 | 19116 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19117 | *need_reprocess = true; |
19118 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19119 | info_ptr += bytes_read; |
19120 | break; | |
cf532bd1 | 19121 | case DW_FORM_strx: |
15f18d14 AT |
19122 | case DW_FORM_strx1: |
19123 | case DW_FORM_strx2: | |
19124 | case DW_FORM_strx3: | |
19125 | case DW_FORM_strx4: | |
3019eac3 | 19126 | case DW_FORM_GNU_str_index: |
3019eac3 | 19127 | { |
15f18d14 AT |
19128 | ULONGEST str_index; |
19129 | if (form == DW_FORM_strx1) | |
19130 | { | |
19131 | str_index = read_1_byte (abfd, info_ptr); | |
19132 | info_ptr += 1; | |
19133 | } | |
19134 | else if (form == DW_FORM_strx2) | |
19135 | { | |
19136 | str_index = read_2_bytes (abfd, info_ptr); | |
19137 | info_ptr += 2; | |
19138 | } | |
19139 | else if (form == DW_FORM_strx3) | |
19140 | { | |
19141 | str_index = read_3_bytes (abfd, info_ptr); | |
19142 | info_ptr += 3; | |
19143 | } | |
19144 | else if (form == DW_FORM_strx4) | |
19145 | { | |
19146 | str_index = read_4_bytes (abfd, info_ptr); | |
19147 | info_ptr += 4; | |
19148 | } | |
19149 | else | |
19150 | { | |
19151 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19152 | info_ptr += bytes_read; | |
19153 | } | |
18a8505e AT |
19154 | *need_reprocess = true; |
19155 | DW_UNSND (attr) = str_index; | |
19156 | } | |
3019eac3 | 19157 | break; |
c906108c | 19158 | default: |
8a3fe4f8 | 19159 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19160 | dwarf_form_name (form), |
19161 | bfd_get_filename (abfd)); | |
c906108c | 19162 | } |
28e94949 | 19163 | |
36586728 | 19164 | /* Super hack. */ |
cd6c91b4 | 19165 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19166 | attr->form = DW_FORM_GNU_ref_alt; |
19167 | ||
28e94949 JB |
19168 | /* We have seen instances where the compiler tried to emit a byte |
19169 | size attribute of -1 which ended up being encoded as an unsigned | |
19170 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19171 | an object of this size seems pretty unlikely so we can relatively | |
19172 | safely treat these cases as if the size attribute was invalid and | |
19173 | treat them as zero by default. */ | |
19174 | if (attr->name == DW_AT_byte_size | |
19175 | && form == DW_FORM_data4 | |
19176 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19177 | { |
19178 | complaint | |
b98664d3 | 19179 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19180 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19181 | DW_UNSND (attr) = 0; |
19182 | } | |
28e94949 | 19183 | |
c906108c SS |
19184 | return info_ptr; |
19185 | } | |
19186 | ||
a8329558 KW |
19187 | /* Read an attribute described by an abbreviated attribute. */ |
19188 | ||
d521ce57 | 19189 | static const gdb_byte * |
dee91e82 DE |
19190 | read_attribute (const struct die_reader_specs *reader, |
19191 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19192 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19193 | { |
19194 | attr->name = abbrev->name; | |
43988095 | 19195 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19196 | abbrev->implicit_const, info_ptr, |
19197 | need_reprocess); | |
a8329558 KW |
19198 | } |
19199 | ||
c906108c | 19200 | static CORE_ADDR |
d521ce57 | 19201 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19202 | unsigned int *bytes_read) |
c906108c | 19203 | { |
e7c27a73 | 19204 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19205 | CORE_ADDR retval = 0; |
19206 | ||
107d2387 | 19207 | if (cu_header->signed_addr_p) |
c906108c | 19208 | { |
107d2387 AC |
19209 | switch (cu_header->addr_size) |
19210 | { | |
19211 | case 2: | |
fe1b8b76 | 19212 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19213 | break; |
19214 | case 4: | |
fe1b8b76 | 19215 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19216 | break; |
19217 | case 8: | |
fe1b8b76 | 19218 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19219 | break; |
19220 | default: | |
8e65ff28 | 19221 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19222 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19223 | bfd_get_filename (abfd)); |
107d2387 AC |
19224 | } |
19225 | } | |
19226 | else | |
19227 | { | |
19228 | switch (cu_header->addr_size) | |
19229 | { | |
19230 | case 2: | |
fe1b8b76 | 19231 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19232 | break; |
19233 | case 4: | |
fe1b8b76 | 19234 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19235 | break; |
19236 | case 8: | |
fe1b8b76 | 19237 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19238 | break; |
19239 | default: | |
8e65ff28 | 19240 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19241 | _("read_address: bad switch, " |
19242 | "unsigned [in module %s]"), | |
659b0389 | 19243 | bfd_get_filename (abfd)); |
107d2387 | 19244 | } |
c906108c | 19245 | } |
64367e0a | 19246 | |
107d2387 AC |
19247 | *bytes_read = cu_header->addr_size; |
19248 | return retval; | |
c906108c SS |
19249 | } |
19250 | ||
f7ef9339 | 19251 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19252 | specification allows the initial length to take up either 4 bytes |
19253 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19254 | bytes describe the length and all offsets will be 8 bytes in length | |
19255 | instead of 4. | |
19256 | ||
f7ef9339 KB |
19257 | An older, non-standard 64-bit format is also handled by this |
19258 | function. The older format in question stores the initial length | |
19259 | as an 8-byte quantity without an escape value. Lengths greater | |
19260 | than 2^32 aren't very common which means that the initial 4 bytes | |
19261 | is almost always zero. Since a length value of zero doesn't make | |
19262 | sense for the 32-bit format, this initial zero can be considered to | |
19263 | be an escape value which indicates the presence of the older 64-bit | |
19264 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19265 | greater than 4GB. If it becomes necessary to handle lengths |
19266 | somewhat larger than 4GB, we could allow other small values (such | |
19267 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19268 | escape values indicating the presence of the old format. | |
f7ef9339 | 19269 | |
917c78fc MK |
19270 | The value returned via bytes_read should be used to increment the |
19271 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19272 | |
613e1657 KB |
19273 | [ Note: read_initial_length() and read_offset() are based on the |
19274 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19275 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19276 | from: |
19277 | ||
f7ef9339 | 19278 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19279 | |
613e1657 KB |
19280 | This document is only a draft and is subject to change. (So beware.) |
19281 | ||
f7ef9339 | 19282 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19283 | determined empirically by examining 64-bit ELF files produced by |
19284 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19285 | |
19286 | - Kevin, July 16, 2002 | |
613e1657 KB |
19287 | ] */ |
19288 | ||
19289 | static LONGEST | |
d521ce57 | 19290 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19291 | { |
fe1b8b76 | 19292 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19293 | |
dd373385 | 19294 | if (length == 0xffffffff) |
613e1657 | 19295 | { |
fe1b8b76 | 19296 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19297 | *bytes_read = 12; |
613e1657 | 19298 | } |
dd373385 | 19299 | else if (length == 0) |
f7ef9339 | 19300 | { |
dd373385 | 19301 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19302 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19303 | *bytes_read = 8; |
f7ef9339 | 19304 | } |
613e1657 KB |
19305 | else |
19306 | { | |
19307 | *bytes_read = 4; | |
613e1657 KB |
19308 | } |
19309 | ||
c764a876 DE |
19310 | return length; |
19311 | } | |
dd373385 | 19312 | |
c764a876 DE |
19313 | /* Cover function for read_initial_length. |
19314 | Returns the length of the object at BUF, and stores the size of the | |
19315 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19316 | *OFFSET_SIZE. | |
19317 | If the initial length size is not equivalent to that specified in | |
19318 | CU_HEADER then issue a complaint. | |
19319 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19320 | |
c764a876 | 19321 | static LONGEST |
d521ce57 | 19322 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19323 | const struct comp_unit_head *cu_header, |
19324 | unsigned int *bytes_read, | |
19325 | unsigned int *offset_size) | |
19326 | { | |
19327 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19328 | ||
19329 | gdb_assert (cu_header->initial_length_size == 4 | |
19330 | || cu_header->initial_length_size == 8 | |
19331 | || cu_header->initial_length_size == 12); | |
19332 | ||
19333 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19334 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19335 | |
c764a876 | 19336 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19337 | return length; |
613e1657 KB |
19338 | } |
19339 | ||
19340 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19341 | given by cu_header->offset_size. */ |
613e1657 KB |
19342 | |
19343 | static LONGEST | |
d521ce57 TT |
19344 | read_offset (bfd *abfd, const gdb_byte *buf, |
19345 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19346 | unsigned int *bytes_read) |
c764a876 DE |
19347 | { |
19348 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19349 | |
c764a876 DE |
19350 | *bytes_read = cu_header->offset_size; |
19351 | return offset; | |
19352 | } | |
19353 | ||
19354 | /* Read an offset from the data stream. */ | |
19355 | ||
19356 | static LONGEST | |
d521ce57 | 19357 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19358 | { |
19359 | LONGEST retval = 0; | |
19360 | ||
c764a876 | 19361 | switch (offset_size) |
613e1657 KB |
19362 | { |
19363 | case 4: | |
fe1b8b76 | 19364 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19365 | break; |
19366 | case 8: | |
fe1b8b76 | 19367 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19368 | break; |
19369 | default: | |
8e65ff28 | 19370 | internal_error (__FILE__, __LINE__, |
c764a876 | 19371 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19372 | bfd_get_filename (abfd)); |
613e1657 KB |
19373 | } |
19374 | ||
917c78fc | 19375 | return retval; |
613e1657 KB |
19376 | } |
19377 | ||
d521ce57 TT |
19378 | static const gdb_byte * |
19379 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19380 | { |
19381 | /* If the size of a host char is 8 bits, we can return a pointer | |
19382 | to the buffer, otherwise we have to copy the data to a buffer | |
19383 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19384 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19385 | return buf; |
c906108c SS |
19386 | } |
19387 | ||
d521ce57 TT |
19388 | static const char * |
19389 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19390 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19391 | { |
19392 | /* If the size of a host char is 8 bits, we can return a pointer | |
19393 | to the string, otherwise we have to copy the string to a buffer | |
19394 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19395 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19396 | if (*buf == '\0') |
19397 | { | |
19398 | *bytes_read_ptr = 1; | |
19399 | return NULL; | |
19400 | } | |
d521ce57 TT |
19401 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19402 | return (const char *) buf; | |
4bdf3d34 JJ |
19403 | } |
19404 | ||
43988095 JK |
19405 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19406 | reporting strings FORM_NAME and SECT_NAME. */ | |
19407 | ||
d521ce57 | 19408 | static const char * |
ed2dc618 SM |
19409 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19410 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19411 | struct dwarf2_section_info *sect, |
19412 | const char *form_name, | |
19413 | const char *sect_name) | |
19414 | { | |
96b79293 | 19415 | sect->read (objfile); |
43988095 JK |
19416 | if (sect->buffer == NULL) |
19417 | error (_("%s used without %s section [in module %s]"), | |
19418 | form_name, sect_name, bfd_get_filename (abfd)); | |
19419 | if (str_offset >= sect->size) | |
19420 | error (_("%s pointing outside of %s section [in module %s]"), | |
19421 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19422 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19423 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19424 | return NULL; |
43988095 JK |
19425 | return (const char *) (sect->buffer + str_offset); |
19426 | } | |
19427 | ||
19428 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19429 | ||
19430 | static const char * | |
ed2dc618 SM |
19431 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19432 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19433 | { |
ed2dc618 SM |
19434 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19435 | abfd, str_offset, | |
43988095 JK |
19436 | &dwarf2_per_objfile->str, |
19437 | "DW_FORM_strp", ".debug_str"); | |
19438 | } | |
19439 | ||
19440 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19441 | ||
19442 | static const char * | |
ed2dc618 SM |
19443 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19444 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19445 | { |
ed2dc618 SM |
19446 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19447 | abfd, str_offset, | |
43988095 JK |
19448 | &dwarf2_per_objfile->line_str, |
19449 | "DW_FORM_line_strp", | |
19450 | ".debug_line_str"); | |
c906108c SS |
19451 | } |
19452 | ||
36586728 TT |
19453 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19454 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19455 | the string consists of a single NUL byte, return NULL; otherwise | |
19456 | return a pointer to the string. */ | |
19457 | ||
d521ce57 | 19458 | static const char * |
ed2dc618 SM |
19459 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19460 | LONGEST str_offset) | |
36586728 | 19461 | { |
96b79293 | 19462 | dwz->str.read (objfile); |
36586728 TT |
19463 | |
19464 | if (dwz->str.buffer == NULL) | |
19465 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19466 | "section [in module %s]"), | |
00f93c44 | 19467 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19468 | if (str_offset >= dwz->str.size) |
19469 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19470 | ".debug_str section [in module %s]"), | |
00f93c44 | 19471 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19472 | gdb_assert (HOST_CHAR_BIT == 8); |
19473 | if (dwz->str.buffer[str_offset] == '\0') | |
19474 | return NULL; | |
d521ce57 | 19475 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19476 | } |
19477 | ||
43988095 JK |
19478 | /* Return pointer to string at .debug_str offset as read from BUF. |
19479 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19480 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19481 | ||
d521ce57 | 19482 | static const char * |
ed2dc618 SM |
19483 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19484 | const gdb_byte *buf, | |
cf2c3c16 TT |
19485 | const struct comp_unit_head *cu_header, |
19486 | unsigned int *bytes_read_ptr) | |
19487 | { | |
19488 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19489 | ||
ed2dc618 | 19490 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19491 | } |
19492 | ||
43988095 JK |
19493 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19494 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19495 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19496 | ||
19497 | static const char * | |
ed2dc618 SM |
19498 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19499 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19500 | const struct comp_unit_head *cu_header, |
19501 | unsigned int *bytes_read_ptr) | |
19502 | { | |
19503 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19504 | ||
ed2dc618 SM |
19505 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19506 | str_offset); | |
43988095 JK |
19507 | } |
19508 | ||
3019eac3 | 19509 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19510 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19511 | ADDR_SIZE is the size of addresses from the CU header. */ |
19512 | ||
19513 | static CORE_ADDR | |
ed2dc618 | 19514 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19515 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19516 | int addr_size) | |
3019eac3 DE |
19517 | { |
19518 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19519 | bfd *abfd = objfile->obfd; | |
19520 | const gdb_byte *info_ptr; | |
18a8505e | 19521 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19522 | |
96b79293 | 19523 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
19524 | if (dwarf2_per_objfile->addr.buffer == NULL) |
19525 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19526 | objfile_name (objfile)); |
18a8505e AT |
19527 | if (addr_base_or_zero + addr_index * addr_size |
19528 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
19529 | error (_("DW_FORM_addr_index pointing outside of " |
19530 | ".debug_addr section [in module %s]"), | |
4262abfb | 19531 | objfile_name (objfile)); |
3019eac3 | 19532 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 19533 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19534 | if (addr_size == 4) |
19535 | return bfd_get_32 (abfd, info_ptr); | |
19536 | else | |
19537 | return bfd_get_64 (abfd, info_ptr); | |
19538 | } | |
19539 | ||
19540 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19541 | ||
19542 | static CORE_ADDR | |
19543 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19544 | { | |
518817b3 SM |
19545 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19546 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19547 | } |
19548 | ||
19549 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19550 | ||
19551 | static CORE_ADDR | |
d521ce57 | 19552 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19553 | unsigned int *bytes_read) |
19554 | { | |
518817b3 | 19555 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19556 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19557 | ||
19558 | return read_addr_index (cu, addr_index); | |
19559 | } | |
19560 | ||
3019eac3 DE |
19561 | /* Given an index in .debug_addr, fetch the value. |
19562 | NOTE: This can be called during dwarf expression evaluation, | |
19563 | long after the debug information has been read, and thus per_cu->cu | |
19564 | may no longer exist. */ | |
19565 | ||
19566 | CORE_ADDR | |
19567 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19568 | unsigned int addr_index) | |
19569 | { | |
ed2dc618 | 19570 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 19571 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 19572 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19573 | int addr_size; |
19574 | ||
3019eac3 DE |
19575 | /* We need addr_base and addr_size. |
19576 | If we don't have PER_CU->cu, we have to get it. | |
19577 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19578 | which at this point doesn't seem justified: it's not clear how frequently | |
19579 | it would get used and it would increase the size of every PER_CU. | |
19580 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19581 | so we're not in uncharted territory here. | |
19582 | Alas we need to be a bit more complicated as addr_base is contained | |
19583 | in the DIE. | |
19584 | ||
19585 | We don't need to read the entire CU(/TU). | |
19586 | We just need the header and top level die. | |
a1b64ce1 | 19587 | |
3019eac3 | 19588 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19589 | For now we skip this optimization. */ |
3019eac3 DE |
19590 | |
19591 | if (cu != NULL) | |
19592 | { | |
19593 | addr_base = cu->addr_base; | |
19594 | addr_size = cu->header.addr_size; | |
19595 | } | |
19596 | else | |
19597 | { | |
c0ab21c2 TT |
19598 | cutu_reader reader (per_cu, NULL, 0, 0, false); |
19599 | addr_base = reader.cu->addr_base; | |
19600 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19601 | } |
19602 | ||
ed2dc618 SM |
19603 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19604 | addr_size); | |
3019eac3 DE |
19605 | } |
19606 | ||
18a8505e AT |
19607 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19608 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19609 | DWO file. */ | |
3019eac3 | 19610 | |
d521ce57 | 19611 | static const char * |
18a8505e AT |
19612 | read_str_index (struct dwarf2_cu *cu, |
19613 | struct dwarf2_section_info *str_section, | |
19614 | struct dwarf2_section_info *str_offsets_section, | |
19615 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19616 | { |
518817b3 SM |
19617 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19618 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19619 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19620 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19621 | bfd *abfd = objfile->obfd; |
d521ce57 | 19622 | const gdb_byte *info_ptr; |
3019eac3 | 19623 | ULONGEST str_offset; |
cf532bd1 | 19624 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19625 | |
96b79293 TT |
19626 | str_section->read (objfile); |
19627 | str_offsets_section->read (objfile); | |
73869dc2 | 19628 | if (str_section->buffer == NULL) |
18a8505e | 19629 | error (_("%s used without %s section" |
9d8780f0 | 19630 | " in CU at offset %s [in module %s]"), |
96b79293 | 19631 | form_name, str_section->get_name (), |
18a8505e | 19632 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19633 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19634 | error (_("%s used without %s section" |
9d8780f0 | 19635 | " in CU at offset %s [in module %s]"), |
96b79293 | 19636 | form_name, str_section->get_name (), |
18a8505e | 19637 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19638 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19639 | + str_offsets_base |
3019eac3 DE |
19640 | + str_index * cu->header.offset_size); |
19641 | if (cu->header.offset_size == 4) | |
19642 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19643 | else | |
19644 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19645 | if (str_offset >= str_section->size) |
57d63ce2 | 19646 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19647 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19648 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19649 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19650 | } |
19651 | ||
18a8505e AT |
19652 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19653 | ||
19654 | static const char * | |
19655 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19656 | { | |
19657 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19658 | ? reader->cu->header.addr_size : 0; | |
19659 | return read_str_index (reader->cu, | |
19660 | &reader->dwo_file->sections.str, | |
19661 | &reader->dwo_file->sections.str_offsets, | |
19662 | str_offsets_base, str_index); | |
19663 | } | |
19664 | ||
19665 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19666 | ||
19667 | static const char * | |
19668 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19669 | { | |
19670 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
19671 | const char *objf_name = objfile_name (objfile); | |
19672 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19673 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19674 | ||
19675 | if (!cu->str_offsets_base.has_value ()) | |
19676 | error (_("%s used in Fission stub without %s" | |
19677 | " in CU at offset 0x%lx [in module %s]"), | |
19678 | form_name, str_offsets_attr_name, | |
19679 | (long) cu->header.offset_size, objf_name); | |
19680 | ||
19681 | return read_str_index (cu, | |
19682 | &cu->per_cu->dwarf2_per_objfile->str, | |
19683 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
19684 | *cu->str_offsets_base, str_index); | |
19685 | } | |
19686 | ||
3019eac3 DE |
19687 | /* Return the length of an LEB128 number in BUF. */ |
19688 | ||
19689 | static int | |
19690 | leb128_size (const gdb_byte *buf) | |
19691 | { | |
19692 | const gdb_byte *begin = buf; | |
19693 | gdb_byte byte; | |
19694 | ||
19695 | while (1) | |
19696 | { | |
19697 | byte = *buf++; | |
19698 | if ((byte & 128) == 0) | |
19699 | return buf - begin; | |
19700 | } | |
19701 | } | |
19702 | ||
c906108c | 19703 | static void |
e142c38c | 19704 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19705 | { |
19706 | switch (lang) | |
19707 | { | |
19708 | case DW_LANG_C89: | |
76bee0cc | 19709 | case DW_LANG_C99: |
0cfd832f | 19710 | case DW_LANG_C11: |
c906108c | 19711 | case DW_LANG_C: |
d1be3247 | 19712 | case DW_LANG_UPC: |
e142c38c | 19713 | cu->language = language_c; |
c906108c | 19714 | break; |
9c37b5ae | 19715 | case DW_LANG_Java: |
c906108c | 19716 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19717 | case DW_LANG_C_plus_plus_11: |
19718 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19719 | cu->language = language_cplus; |
c906108c | 19720 | break; |
6aecb9c2 JB |
19721 | case DW_LANG_D: |
19722 | cu->language = language_d; | |
19723 | break; | |
c906108c SS |
19724 | case DW_LANG_Fortran77: |
19725 | case DW_LANG_Fortran90: | |
b21b22e0 | 19726 | case DW_LANG_Fortran95: |
f7de9aab MW |
19727 | case DW_LANG_Fortran03: |
19728 | case DW_LANG_Fortran08: | |
e142c38c | 19729 | cu->language = language_fortran; |
c906108c | 19730 | break; |
a766d390 DE |
19731 | case DW_LANG_Go: |
19732 | cu->language = language_go; | |
19733 | break; | |
c906108c | 19734 | case DW_LANG_Mips_Assembler: |
e142c38c | 19735 | cu->language = language_asm; |
c906108c SS |
19736 | break; |
19737 | case DW_LANG_Ada83: | |
8aaf0b47 | 19738 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19739 | cu->language = language_ada; |
19740 | break; | |
72019c9c GM |
19741 | case DW_LANG_Modula2: |
19742 | cu->language = language_m2; | |
19743 | break; | |
fe8e67fd PM |
19744 | case DW_LANG_Pascal83: |
19745 | cu->language = language_pascal; | |
19746 | break; | |
22566fbd DJ |
19747 | case DW_LANG_ObjC: |
19748 | cu->language = language_objc; | |
19749 | break; | |
c44af4eb TT |
19750 | case DW_LANG_Rust: |
19751 | case DW_LANG_Rust_old: | |
19752 | cu->language = language_rust; | |
19753 | break; | |
c906108c SS |
19754 | case DW_LANG_Cobol74: |
19755 | case DW_LANG_Cobol85: | |
c906108c | 19756 | default: |
e142c38c | 19757 | cu->language = language_minimal; |
c906108c SS |
19758 | break; |
19759 | } | |
e142c38c | 19760 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19761 | } |
19762 | ||
19763 | /* Return the named attribute or NULL if not there. */ | |
19764 | ||
19765 | static struct attribute * | |
e142c38c | 19766 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19767 | { |
a48e046c | 19768 | for (;;) |
c906108c | 19769 | { |
a48e046c TT |
19770 | unsigned int i; |
19771 | struct attribute *spec = NULL; | |
19772 | ||
19773 | for (i = 0; i < die->num_attrs; ++i) | |
19774 | { | |
19775 | if (die->attrs[i].name == name) | |
19776 | return &die->attrs[i]; | |
19777 | if (die->attrs[i].name == DW_AT_specification | |
19778 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19779 | spec = &die->attrs[i]; | |
19780 | } | |
19781 | ||
19782 | if (!spec) | |
19783 | break; | |
c906108c | 19784 | |
f2f0e013 | 19785 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19786 | } |
c5aa993b | 19787 | |
c906108c SS |
19788 | return NULL; |
19789 | } | |
19790 | ||
348e048f DE |
19791 | /* Return the named attribute or NULL if not there, |
19792 | but do not follow DW_AT_specification, etc. | |
19793 | This is for use in contexts where we're reading .debug_types dies. | |
19794 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19795 | back up the chain, and we want to go down. */ | |
19796 | ||
19797 | static struct attribute * | |
45e58e77 | 19798 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19799 | { |
19800 | unsigned int i; | |
19801 | ||
19802 | for (i = 0; i < die->num_attrs; ++i) | |
19803 | if (die->attrs[i].name == name) | |
19804 | return &die->attrs[i]; | |
19805 | ||
19806 | return NULL; | |
19807 | } | |
19808 | ||
7d45c7c3 KB |
19809 | /* Return the string associated with a string-typed attribute, or NULL if it |
19810 | is either not found or is of an incorrect type. */ | |
19811 | ||
19812 | static const char * | |
19813 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19814 | { | |
19815 | struct attribute *attr; | |
19816 | const char *str = NULL; | |
19817 | ||
19818 | attr = dwarf2_attr (die, name, cu); | |
19819 | ||
19820 | if (attr != NULL) | |
19821 | { | |
43988095 | 19822 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 19823 | || attr->form == DW_FORM_string |
cf532bd1 | 19824 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
19825 | || attr->form == DW_FORM_strx1 |
19826 | || attr->form == DW_FORM_strx2 | |
19827 | || attr->form == DW_FORM_strx3 | |
19828 | || attr->form == DW_FORM_strx4 | |
b3340438 | 19829 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 19830 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19831 | str = DW_STRING (attr); |
19832 | else | |
b98664d3 | 19833 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19834 | "DIE at %s in module %s"), |
19835 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19836 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19837 | } |
19838 | ||
19839 | return str; | |
19840 | } | |
19841 | ||
a084a2a6 | 19842 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19843 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19844 | static const char * |
19845 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19846 | { | |
19847 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19848 | if (dwo_name == nullptr) | |
19849 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19850 | return dwo_name; | |
19851 | } | |
19852 | ||
05cf31d1 JB |
19853 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19854 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19855 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19856 | |
19857 | static int | |
19858 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19859 | { | |
19860 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19861 | ||
19862 | return (attr && DW_UNSND (attr)); | |
19863 | } | |
19864 | ||
3ca72b44 | 19865 | static int |
e142c38c | 19866 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19867 | { |
05cf31d1 JB |
19868 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19869 | which value is non-zero. However, we have to be careful with | |
19870 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19871 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19872 | end up accidently finding a declaration attribute that belongs | |
19873 | to a different DIE referenced by the specification attribute, | |
19874 | even though the given DIE does not have a declaration attribute. */ | |
19875 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19876 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19877 | } |
19878 | ||
63d06c5c | 19879 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19880 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19881 | containing the return value on output. If there is no |
19882 | specification, but there is an abstract origin, that is | |
19883 | returned. */ | |
63d06c5c DC |
19884 | |
19885 | static struct die_info * | |
f2f0e013 | 19886 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19887 | { |
f2f0e013 DJ |
19888 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19889 | *spec_cu); | |
63d06c5c | 19890 | |
edb3359d DJ |
19891 | if (spec_attr == NULL) |
19892 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19893 | ||
63d06c5c DC |
19894 | if (spec_attr == NULL) |
19895 | return NULL; | |
19896 | else | |
f2f0e013 | 19897 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19898 | } |
c906108c | 19899 | |
527f3840 JK |
19900 | /* Stub for free_line_header to match void * callback types. */ |
19901 | ||
19902 | static void | |
19903 | free_line_header_voidp (void *arg) | |
19904 | { | |
9a3c8263 | 19905 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19906 | |
fff8551c | 19907 | delete lh; |
527f3840 JK |
19908 | } |
19909 | ||
fff8551c PA |
19910 | void |
19911 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 19912 | { |
27e0867f | 19913 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
19914 | { |
19915 | size_t new_size; | |
19916 | if (version >= 5) | |
19917 | new_size = m_include_dirs.size (); | |
19918 | else | |
19919 | new_size = m_include_dirs.size () + 1; | |
19920 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", | |
19921 | new_size, include_dir); | |
19922 | } | |
19923 | m_include_dirs.push_back (include_dir); | |
debd256d | 19924 | } |
6e70227d | 19925 | |
fff8551c PA |
19926 | void |
19927 | line_header::add_file_name (const char *name, | |
ecfb656c | 19928 | dir_index d_index, |
fff8551c PA |
19929 | unsigned int mod_time, |
19930 | unsigned int length) | |
debd256d | 19931 | { |
27e0867f | 19932 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
19933 | { |
19934 | size_t new_size; | |
19935 | if (version >= 5) | |
19936 | new_size = file_names_size (); | |
19937 | else | |
19938 | new_size = file_names_size () + 1; | |
19939 | fprintf_unfiltered (gdb_stdlog, "Adding file %zu: %s\n", | |
19940 | new_size, name); | |
19941 | } | |
19942 | m_file_names.emplace_back (name, d_index, mod_time, length); | |
debd256d | 19943 | } |
6e70227d | 19944 | |
83769d0b | 19945 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19946 | |
19947 | static struct dwarf2_section_info * | |
19948 | get_debug_line_section (struct dwarf2_cu *cu) | |
19949 | { | |
19950 | struct dwarf2_section_info *section; | |
518817b3 SM |
19951 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19952 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19953 | |
19954 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19955 | DWO file. */ | |
19956 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19957 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19958 | else if (cu->per_cu->is_dwz) | |
19959 | { | |
ed2dc618 | 19960 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19961 | |
19962 | section = &dwz->line; | |
19963 | } | |
19964 | else | |
19965 | section = &dwarf2_per_objfile->line; | |
19966 | ||
19967 | return section; | |
19968 | } | |
19969 | ||
43988095 JK |
19970 | /* Read directory or file name entry format, starting with byte of |
19971 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
19972 | entries count and the entries themselves in the described entry | |
19973 | format. */ | |
19974 | ||
19975 | static void | |
ed2dc618 SM |
19976 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19977 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
19978 | struct line_header *lh, |
19979 | const struct comp_unit_head *cu_header, | |
19980 | void (*callback) (struct line_header *lh, | |
19981 | const char *name, | |
ecfb656c | 19982 | dir_index d_index, |
43988095 JK |
19983 | unsigned int mod_time, |
19984 | unsigned int length)) | |
19985 | { | |
19986 | gdb_byte format_count, formati; | |
19987 | ULONGEST data_count, datai; | |
19988 | const gdb_byte *buf = *bufp; | |
19989 | const gdb_byte *format_header_data; | |
43988095 JK |
19990 | unsigned int bytes_read; |
19991 | ||
19992 | format_count = read_1_byte (abfd, buf); | |
19993 | buf += 1; | |
19994 | format_header_data = buf; | |
19995 | for (formati = 0; formati < format_count; formati++) | |
19996 | { | |
19997 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19998 | buf += bytes_read; | |
19999 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20000 | buf += bytes_read; | |
20001 | } | |
20002 | ||
20003 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20004 | buf += bytes_read; | |
20005 | for (datai = 0; datai < data_count; datai++) | |
20006 | { | |
20007 | const gdb_byte *format = format_header_data; | |
20008 | struct file_entry fe; | |
20009 | ||
43988095 JK |
20010 | for (formati = 0; formati < format_count; formati++) |
20011 | { | |
ecfb656c | 20012 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20013 | format += bytes_read; |
43988095 | 20014 | |
ecfb656c | 20015 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20016 | format += bytes_read; |
ecfb656c PA |
20017 | |
20018 | gdb::optional<const char *> string; | |
20019 | gdb::optional<unsigned int> uint; | |
20020 | ||
43988095 JK |
20021 | switch (form) |
20022 | { | |
20023 | case DW_FORM_string: | |
ecfb656c | 20024 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20025 | buf += bytes_read; |
20026 | break; | |
20027 | ||
20028 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20029 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20030 | abfd, buf, | |
ecfb656c PA |
20031 | cu_header, |
20032 | &bytes_read)); | |
43988095 JK |
20033 | buf += bytes_read; |
20034 | break; | |
20035 | ||
20036 | case DW_FORM_data1: | |
ecfb656c | 20037 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20038 | buf += 1; |
20039 | break; | |
20040 | ||
20041 | case DW_FORM_data2: | |
ecfb656c | 20042 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20043 | buf += 2; |
20044 | break; | |
20045 | ||
20046 | case DW_FORM_data4: | |
ecfb656c | 20047 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20048 | buf += 4; |
20049 | break; | |
20050 | ||
20051 | case DW_FORM_data8: | |
ecfb656c | 20052 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20053 | buf += 8; |
20054 | break; | |
20055 | ||
7ba99d21 AT |
20056 | case DW_FORM_data16: |
20057 | /* This is used for MD5, but file_entry does not record MD5s. */ | |
20058 | buf += 16; | |
20059 | break; | |
20060 | ||
43988095 | 20061 | case DW_FORM_udata: |
ecfb656c | 20062 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20063 | buf += bytes_read; |
20064 | break; | |
20065 | ||
20066 | case DW_FORM_block: | |
20067 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20068 | current GDB. */ | |
20069 | break; | |
20070 | } | |
ecfb656c PA |
20071 | |
20072 | switch (content_type) | |
20073 | { | |
20074 | case DW_LNCT_path: | |
20075 | if (string.has_value ()) | |
20076 | fe.name = *string; | |
20077 | break; | |
20078 | case DW_LNCT_directory_index: | |
20079 | if (uint.has_value ()) | |
20080 | fe.d_index = (dir_index) *uint; | |
20081 | break; | |
20082 | case DW_LNCT_timestamp: | |
20083 | if (uint.has_value ()) | |
20084 | fe.mod_time = *uint; | |
20085 | break; | |
20086 | case DW_LNCT_size: | |
20087 | if (uint.has_value ()) | |
20088 | fe.length = *uint; | |
20089 | break; | |
20090 | case DW_LNCT_MD5: | |
20091 | break; | |
20092 | default: | |
b98664d3 | 20093 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20094 | pulongest (content_type)); |
20095 | } | |
43988095 JK |
20096 | } |
20097 | ||
ecfb656c | 20098 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20099 | } |
20100 | ||
20101 | *bufp = buf; | |
20102 | } | |
20103 | ||
debd256d | 20104 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20105 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20106 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20107 | Returns NULL if there is a problem reading the header, e.g., if it |
20108 | has a version we don't understand. | |
debd256d JB |
20109 | |
20110 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20111 | the returned object point into the dwarf line section buffer, |
20112 | and must not be freed. */ | |
ae2de4f8 | 20113 | |
fff8551c | 20114 | static line_header_up |
9c541725 | 20115 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20116 | { |
d521ce57 | 20117 | const gdb_byte *line_ptr; |
c764a876 | 20118 | unsigned int bytes_read, offset_size; |
debd256d | 20119 | int i; |
d521ce57 | 20120 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20121 | struct dwarf2_section_info *section; |
20122 | bfd *abfd; | |
518817b3 SM |
20123 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20124 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20125 | |
36586728 | 20126 | section = get_debug_line_section (cu); |
96b79293 | 20127 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 20128 | if (section->buffer == NULL) |
debd256d | 20129 | { |
3019eac3 | 20130 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20131 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20132 | else |
b98664d3 | 20133 | complaint (_("missing .debug_line section")); |
debd256d JB |
20134 | return 0; |
20135 | } | |
20136 | ||
fceca515 DE |
20137 | /* We can't do this until we know the section is non-empty. |
20138 | Only then do we know we have such a section. */ | |
96b79293 | 20139 | abfd = section->get_bfd_owner (); |
fceca515 | 20140 | |
a738430d MK |
20141 | /* Make sure that at least there's room for the total_length field. |
20142 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20143 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20144 | { |
4d3c2250 | 20145 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20146 | return 0; |
20147 | } | |
20148 | ||
fff8551c | 20149 | line_header_up lh (new line_header ()); |
debd256d | 20150 | |
9c541725 | 20151 | lh->sect_off = sect_off; |
527f3840 JK |
20152 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20153 | ||
9c541725 | 20154 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20155 | |
a738430d | 20156 | /* Read in the header. */ |
6e70227d | 20157 | lh->total_length = |
c764a876 DE |
20158 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20159 | &bytes_read, &offset_size); | |
debd256d | 20160 | line_ptr += bytes_read; |
7ba99d21 AT |
20161 | |
20162 | const gdb_byte *start_here = line_ptr; | |
20163 | ||
3019eac3 | 20164 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20165 | { |
4d3c2250 | 20166 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20167 | return 0; |
20168 | } | |
7ba99d21 | 20169 | lh->statement_program_end = start_here + lh->total_length; |
debd256d JB |
20170 | lh->version = read_2_bytes (abfd, line_ptr); |
20171 | line_ptr += 2; | |
43988095 | 20172 | if (lh->version > 5) |
cd366ee8 DE |
20173 | { |
20174 | /* This is a version we don't understand. The format could have | |
20175 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20176 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20177 | return NULL; |
20178 | } | |
43988095 JK |
20179 | if (lh->version >= 5) |
20180 | { | |
20181 | gdb_byte segment_selector_size; | |
20182 | ||
20183 | /* Skip address size. */ | |
20184 | read_1_byte (abfd, line_ptr); | |
20185 | line_ptr += 1; | |
20186 | ||
20187 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20188 | line_ptr += 1; | |
20189 | if (segment_selector_size != 0) | |
20190 | { | |
b98664d3 | 20191 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20192 | "in .debug_line section"), |
20193 | segment_selector_size); | |
20194 | return NULL; | |
20195 | } | |
20196 | } | |
c764a876 DE |
20197 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20198 | line_ptr += offset_size; | |
7ba99d21 | 20199 | lh->statement_program_start = line_ptr + lh->header_length; |
debd256d JB |
20200 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20201 | line_ptr += 1; | |
2dc7f7b3 TT |
20202 | if (lh->version >= 4) |
20203 | { | |
20204 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20205 | line_ptr += 1; | |
20206 | } | |
20207 | else | |
20208 | lh->maximum_ops_per_instruction = 1; | |
20209 | ||
20210 | if (lh->maximum_ops_per_instruction == 0) | |
20211 | { | |
20212 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20213 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20214 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20215 | } |
20216 | ||
debd256d JB |
20217 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20218 | line_ptr += 1; | |
20219 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20220 | line_ptr += 1; | |
20221 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20222 | line_ptr += 1; | |
20223 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20224 | line_ptr += 1; | |
fff8551c | 20225 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20226 | |
20227 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20228 | for (i = 1; i < lh->opcode_base; ++i) | |
20229 | { | |
20230 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20231 | line_ptr += 1; | |
20232 | } | |
20233 | ||
43988095 | 20234 | if (lh->version >= 5) |
debd256d | 20235 | { |
43988095 | 20236 | /* Read directory table. */ |
ed2dc618 SM |
20237 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20238 | &cu->header, | |
b926417a | 20239 | [] (struct line_header *header, const char *name, |
ecfb656c | 20240 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20241 | unsigned int length) |
20242 | { | |
b926417a | 20243 | header->add_include_dir (name); |
fff8551c | 20244 | }); |
debd256d | 20245 | |
43988095 | 20246 | /* Read file name table. */ |
ed2dc618 SM |
20247 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20248 | &cu->header, | |
b926417a | 20249 | [] (struct line_header *header, const char *name, |
ecfb656c | 20250 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20251 | unsigned int length) |
20252 | { | |
b926417a | 20253 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20254 | }); |
43988095 JK |
20255 | } |
20256 | else | |
debd256d | 20257 | { |
43988095 JK |
20258 | /* Read directory table. */ |
20259 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20260 | { | |
20261 | line_ptr += bytes_read; | |
fff8551c | 20262 | lh->add_include_dir (cur_dir); |
43988095 | 20263 | } |
debd256d JB |
20264 | line_ptr += bytes_read; |
20265 | ||
43988095 JK |
20266 | /* Read file name table. */ |
20267 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20268 | { | |
ecfb656c PA |
20269 | unsigned int mod_time, length; |
20270 | dir_index d_index; | |
43988095 JK |
20271 | |
20272 | line_ptr += bytes_read; | |
ecfb656c | 20273 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20274 | line_ptr += bytes_read; |
20275 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20276 | line_ptr += bytes_read; | |
20277 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20278 | line_ptr += bytes_read; | |
20279 | ||
ecfb656c | 20280 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20281 | } |
20282 | line_ptr += bytes_read; | |
debd256d | 20283 | } |
debd256d | 20284 | |
3019eac3 | 20285 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20286 | complaint (_("line number info header doesn't " |
3e43a32a | 20287 | "fit in `.debug_line' section")); |
debd256d | 20288 | |
debd256d JB |
20289 | return lh; |
20290 | } | |
c906108c | 20291 | |
c6da4cef | 20292 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20293 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20294 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20295 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20296 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20297 | |
d521ce57 | 20298 | static const char * |
7ba99d21 | 20299 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20300 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20301 | const char *comp_dir, |
20302 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20303 | { |
d521ce57 TT |
20304 | const char *include_name = fe.name; |
20305 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20306 | const char *pst_filename; |
c6da4cef DE |
20307 | int file_is_pst; |
20308 | ||
8c43009f | 20309 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20310 | |
c89b44cd | 20311 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20312 | if (!IS_ABSOLUTE_PATH (include_name) |
20313 | && (dir_name != NULL || comp_dir != NULL)) | |
20314 | { | |
20315 | /* Avoid creating a duplicate psymtab for PST. | |
20316 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20317 | Before we do the comparison, however, we need to account | |
20318 | for DIR_NAME and COMP_DIR. | |
20319 | First prepend dir_name (if non-NULL). If we still don't | |
20320 | have an absolute path prepend comp_dir (if non-NULL). | |
20321 | However, the directory we record in the include-file's | |
20322 | psymtab does not contain COMP_DIR (to match the | |
20323 | corresponding symtab(s)). | |
20324 | ||
20325 | Example: | |
20326 | ||
20327 | bash$ cd /tmp | |
20328 | bash$ gcc -g ./hello.c | |
20329 | include_name = "hello.c" | |
20330 | dir_name = "." | |
20331 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20332 | DW_AT_name = "./hello.c" |
20333 | ||
20334 | */ | |
c6da4cef DE |
20335 | |
20336 | if (dir_name != NULL) | |
20337 | { | |
c89b44cd TT |
20338 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20339 | include_name, (char *) NULL)); | |
20340 | include_name = name_holder->get (); | |
c6da4cef | 20341 | include_name_to_compare = include_name; |
c6da4cef DE |
20342 | } |
20343 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20344 | { | |
c89b44cd TT |
20345 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20346 | include_name, (char *) NULL)); | |
20347 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20348 | } |
20349 | } | |
20350 | ||
20351 | pst_filename = pst->filename; | |
c89b44cd | 20352 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20353 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20354 | { | |
c89b44cd TT |
20355 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20356 | pst_filename, (char *) NULL)); | |
20357 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20358 | } |
20359 | ||
1e3fad37 | 20360 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20361 | |
c6da4cef DE |
20362 | if (file_is_pst) |
20363 | return NULL; | |
20364 | return include_name; | |
20365 | } | |
20366 | ||
d9b3de22 DE |
20367 | /* State machine to track the state of the line number program. */ |
20368 | ||
6f77053d | 20369 | class lnp_state_machine |
d9b3de22 | 20370 | { |
6f77053d PA |
20371 | public: |
20372 | /* Initialize a machine state for the start of a line number | |
20373 | program. */ | |
804d2729 TT |
20374 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20375 | bool record_lines_p); | |
6f77053d | 20376 | |
8c43009f PA |
20377 | file_entry *current_file () |
20378 | { | |
20379 | /* lh->file_names is 0-based, but the file name numbers in the | |
20380 | statement program are 1-based. */ | |
6f77053d PA |
20381 | return m_line_header->file_name_at (m_file); |
20382 | } | |
20383 | ||
20384 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20385 | we're processing the end of a sequence. */ | |
20386 | void record_line (bool end_sequence); | |
20387 | ||
7ab6656f OJ |
20388 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20389 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20390 | void check_line_address (struct dwarf2_cu *cu, |
20391 | const gdb_byte *line_ptr, | |
7ab6656f | 20392 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20393 | |
20394 | void handle_set_discriminator (unsigned int discriminator) | |
20395 | { | |
20396 | m_discriminator = discriminator; | |
20397 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20398 | } | |
20399 | ||
20400 | /* Handle DW_LNE_set_address. */ | |
20401 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20402 | { | |
20403 | m_op_index = 0; | |
20404 | address += baseaddr; | |
20405 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20406 | } | |
20407 | ||
20408 | /* Handle DW_LNS_advance_pc. */ | |
20409 | void handle_advance_pc (CORE_ADDR adjust); | |
20410 | ||
20411 | /* Handle a special opcode. */ | |
20412 | void handle_special_opcode (unsigned char op_code); | |
20413 | ||
20414 | /* Handle DW_LNS_advance_line. */ | |
20415 | void handle_advance_line (int line_delta) | |
20416 | { | |
20417 | advance_line (line_delta); | |
20418 | } | |
20419 | ||
20420 | /* Handle DW_LNS_set_file. */ | |
20421 | void handle_set_file (file_name_index file); | |
20422 | ||
20423 | /* Handle DW_LNS_negate_stmt. */ | |
20424 | void handle_negate_stmt () | |
20425 | { | |
20426 | m_is_stmt = !m_is_stmt; | |
20427 | } | |
20428 | ||
20429 | /* Handle DW_LNS_const_add_pc. */ | |
20430 | void handle_const_add_pc (); | |
20431 | ||
20432 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20433 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20434 | { | |
20435 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20436 | m_op_index = 0; | |
20437 | } | |
20438 | ||
20439 | /* Handle DW_LNS_copy. */ | |
20440 | void handle_copy () | |
20441 | { | |
20442 | record_line (false); | |
20443 | m_discriminator = 0; | |
20444 | } | |
20445 | ||
20446 | /* Handle DW_LNE_end_sequence. */ | |
20447 | void handle_end_sequence () | |
20448 | { | |
804d2729 | 20449 | m_currently_recording_lines = true; |
6f77053d PA |
20450 | } |
20451 | ||
20452 | private: | |
20453 | /* Advance the line by LINE_DELTA. */ | |
20454 | void advance_line (int line_delta) | |
20455 | { | |
20456 | m_line += line_delta; | |
20457 | ||
20458 | if (line_delta != 0) | |
20459 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20460 | } |
20461 | ||
804d2729 TT |
20462 | struct dwarf2_cu *m_cu; |
20463 | ||
6f77053d PA |
20464 | gdbarch *m_gdbarch; |
20465 | ||
20466 | /* True if we're recording lines. | |
20467 | Otherwise we're building partial symtabs and are just interested in | |
20468 | finding include files mentioned by the line number program. */ | |
20469 | bool m_record_lines_p; | |
20470 | ||
8c43009f | 20471 | /* The line number header. */ |
6f77053d | 20472 | line_header *m_line_header; |
8c43009f | 20473 | |
6f77053d PA |
20474 | /* These are part of the standard DWARF line number state machine, |
20475 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20476 | |
6f77053d | 20477 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20478 | /* The line table index of the current file. */ |
20479 | file_name_index m_file = 1; | |
6f77053d PA |
20480 | unsigned int m_line = 1; |
20481 | ||
20482 | /* These are initialized in the constructor. */ | |
20483 | ||
20484 | CORE_ADDR m_address; | |
20485 | bool m_is_stmt; | |
20486 | unsigned int m_discriminator; | |
d9b3de22 DE |
20487 | |
20488 | /* Additional bits of state we need to track. */ | |
20489 | ||
20490 | /* The last file that we called dwarf2_start_subfile for. | |
20491 | This is only used for TLLs. */ | |
6f77053d | 20492 | unsigned int m_last_file = 0; |
d9b3de22 | 20493 | /* The last file a line number was recorded for. */ |
6f77053d | 20494 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20495 | |
804d2729 TT |
20496 | /* When true, record the lines we decode. */ |
20497 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20498 | |
20499 | /* The last line number that was recorded, used to coalesce | |
20500 | consecutive entries for the same line. This can happen, for | |
20501 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20502 | unsigned int m_last_line = 0; |
20503 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20504 | }; |
d9b3de22 | 20505 | |
6f77053d PA |
20506 | void |
20507 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20508 | { | |
20509 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20510 | / m_line_header->maximum_ops_per_instruction) | |
20511 | * m_line_header->minimum_instruction_length); | |
20512 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20513 | m_op_index = ((m_op_index + adjust) | |
20514 | % m_line_header->maximum_ops_per_instruction); | |
20515 | } | |
d9b3de22 | 20516 | |
6f77053d PA |
20517 | void |
20518 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20519 | { |
6f77053d PA |
20520 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20521 | CORE_ADDR addr_adj = (((m_op_index | |
20522 | + (adj_opcode / m_line_header->line_range)) | |
20523 | / m_line_header->maximum_ops_per_instruction) | |
20524 | * m_line_header->minimum_instruction_length); | |
20525 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20526 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20527 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20528 | |
6f77053d PA |
20529 | int line_delta = (m_line_header->line_base |
20530 | + (adj_opcode % m_line_header->line_range)); | |
20531 | advance_line (line_delta); | |
20532 | record_line (false); | |
20533 | m_discriminator = 0; | |
20534 | } | |
d9b3de22 | 20535 | |
6f77053d PA |
20536 | void |
20537 | lnp_state_machine::handle_set_file (file_name_index file) | |
20538 | { | |
20539 | m_file = file; | |
20540 | ||
20541 | const file_entry *fe = current_file (); | |
20542 | if (fe == NULL) | |
20543 | dwarf2_debug_line_missing_file_complaint (); | |
20544 | else if (m_record_lines_p) | |
20545 | { | |
20546 | const char *dir = fe->include_dir (m_line_header); | |
20547 | ||
c24bdb02 | 20548 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20549 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20550 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20551 | } |
20552 | } | |
20553 | ||
20554 | void | |
20555 | lnp_state_machine::handle_const_add_pc () | |
20556 | { | |
20557 | CORE_ADDR adjust | |
20558 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20559 | ||
20560 | CORE_ADDR addr_adj | |
20561 | = (((m_op_index + adjust) | |
20562 | / m_line_header->maximum_ops_per_instruction) | |
20563 | * m_line_header->minimum_instruction_length); | |
20564 | ||
20565 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20566 | m_op_index = ((m_op_index + adjust) | |
20567 | % m_line_header->maximum_ops_per_instruction); | |
20568 | } | |
d9b3de22 | 20569 | |
a05a36a5 DE |
20570 | /* Return non-zero if we should add LINE to the line number table. |
20571 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20572 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20573 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20574 | had a non-zero discriminator. | |
20575 | ||
20576 | We have to be careful in the presence of discriminators. | |
20577 | E.g., for this line: | |
20578 | ||
20579 | for (i = 0; i < 100000; i++); | |
20580 | ||
20581 | clang can emit four line number entries for that one line, | |
20582 | each with a different discriminator. | |
20583 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20584 | ||
20585 | However, we want gdb to coalesce all four entries into one. | |
20586 | Otherwise the user could stepi into the middle of the line and | |
20587 | gdb would get confused about whether the pc really was in the | |
20588 | middle of the line. | |
20589 | ||
20590 | Things are further complicated by the fact that two consecutive | |
20591 | line number entries for the same line is a heuristic used by gcc | |
20592 | to denote the end of the prologue. So we can't just discard duplicate | |
20593 | entries, we have to be selective about it. The heuristic we use is | |
20594 | that we only collapse consecutive entries for the same line if at least | |
20595 | one of those entries has a non-zero discriminator. PR 17276. | |
20596 | ||
20597 | Note: Addresses in the line number state machine can never go backwards | |
20598 | within one sequence, thus this coalescing is ok. */ | |
20599 | ||
20600 | static int | |
804d2729 TT |
20601 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20602 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20603 | int line_has_non_zero_discriminator, |
20604 | struct subfile *last_subfile) | |
20605 | { | |
c24bdb02 | 20606 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20607 | return 1; |
20608 | if (line != last_line) | |
20609 | return 1; | |
20610 | /* Same line for the same file that we've seen already. | |
20611 | As a last check, for pr 17276, only record the line if the line | |
20612 | has never had a non-zero discriminator. */ | |
20613 | if (!line_has_non_zero_discriminator) | |
20614 | return 1; | |
20615 | return 0; | |
20616 | } | |
20617 | ||
804d2729 TT |
20618 | /* Use the CU's builder to record line number LINE beginning at |
20619 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20620 | |
20621 | static void | |
d9b3de22 DE |
20622 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20623 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20624 | struct dwarf2_cu *cu) |
252a6764 DE |
20625 | { |
20626 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20627 | ||
27e0867f DE |
20628 | if (dwarf_line_debug) |
20629 | { | |
20630 | fprintf_unfiltered (gdb_stdlog, | |
20631 | "Recording line %u, file %s, address %s\n", | |
20632 | line, lbasename (subfile->name), | |
20633 | paddress (gdbarch, address)); | |
20634 | } | |
20635 | ||
804d2729 | 20636 | if (cu != nullptr) |
c24bdb02 | 20637 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
20638 | } |
20639 | ||
20640 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20641 | Mark the end of a set of line number records. | |
d9b3de22 | 20642 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20643 | If SUBFILE is NULL the request is ignored. */ |
20644 | ||
20645 | static void | |
20646 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20647 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20648 | { |
27e0867f DE |
20649 | if (subfile == NULL) |
20650 | return; | |
20651 | ||
20652 | if (dwarf_line_debug) | |
20653 | { | |
20654 | fprintf_unfiltered (gdb_stdlog, | |
20655 | "Finishing current line, file %s, address %s\n", | |
20656 | lbasename (subfile->name), | |
20657 | paddress (gdbarch, address)); | |
20658 | } | |
20659 | ||
804d2729 | 20660 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20661 | } |
20662 | ||
6f77053d PA |
20663 | void |
20664 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20665 | { |
d9b3de22 DE |
20666 | if (dwarf_line_debug) |
20667 | { | |
20668 | fprintf_unfiltered (gdb_stdlog, | |
20669 | "Processing actual line %u: file %u," | |
94a72be7 | 20670 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20671 | m_line, m_file, |
6f77053d | 20672 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20673 | m_is_stmt, m_discriminator, |
20674 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20675 | } |
20676 | ||
6f77053d | 20677 | file_entry *fe = current_file (); |
8c43009f PA |
20678 | |
20679 | if (fe == NULL) | |
d9b3de22 DE |
20680 | dwarf2_debug_line_missing_file_complaint (); |
20681 | /* For now we ignore lines not starting on an instruction boundary. | |
20682 | But not when processing end_sequence for compatibility with the | |
20683 | previous version of the code. */ | |
6f77053d | 20684 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20685 | { |
8c43009f | 20686 | fe->included_p = 1; |
94a72be7 AB |
20687 | if (m_record_lines_p |
20688 | && (producer_is_codewarrior (m_cu) || m_is_stmt || end_sequence)) | |
d9b3de22 | 20689 | { |
c24bdb02 | 20690 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20691 | || end_sequence) |
d9b3de22 | 20692 | { |
804d2729 TT |
20693 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20694 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20695 | } |
20696 | ||
20697 | if (!end_sequence) | |
20698 | { | |
804d2729 | 20699 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20700 | m_line_has_non_zero_discriminator, |
20701 | m_last_subfile)) | |
d9b3de22 | 20702 | { |
c24bdb02 | 20703 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20704 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20705 | builder->get_current_subfile (), |
6f77053d | 20706 | m_line, m_address, |
804d2729 | 20707 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20708 | } |
c24bdb02 | 20709 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20710 | m_last_line = m_line; |
d9b3de22 DE |
20711 | } |
20712 | } | |
20713 | } | |
20714 | } | |
20715 | ||
804d2729 TT |
20716 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20717 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20718 | { |
804d2729 | 20719 | m_cu = cu; |
6f77053d PA |
20720 | m_gdbarch = arch; |
20721 | m_record_lines_p = record_lines_p; | |
20722 | m_line_header = lh; | |
d9b3de22 | 20723 | |
804d2729 | 20724 | m_currently_recording_lines = true; |
d9b3de22 | 20725 | |
d9b3de22 DE |
20726 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20727 | was a line entry for it so that the backend has a chance to adjust it | |
20728 | and also record it in case it needs it. This is currently used by MIPS | |
20729 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20730 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20731 | m_is_stmt = lh->default_is_stmt; | |
20732 | m_discriminator = 0; | |
252a6764 DE |
20733 | } |
20734 | ||
6f77053d PA |
20735 | void |
20736 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20737 | const gdb_byte *line_ptr, | |
7ab6656f | 20738 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20739 | { |
7ab6656f OJ |
20740 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20741 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20742 | values of zero to preserve GDB's previous behaviour which is to handle | |
20743 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20744 | |
7ab6656f | 20745 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20746 | { |
20747 | /* This line table is for a function which has been | |
20748 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20749 | ||
518817b3 | 20750 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20751 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20752 | ||
b98664d3 | 20753 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20754 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20755 | m_currently_recording_lines = false; |
20756 | /* Note: m_currently_recording_lines is left as false until we see | |
20757 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20758 | } |
20759 | } | |
20760 | ||
f3f5162e | 20761 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20762 | Process the line number information in LH. |
20763 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20764 | program in order to set included_p for every referenced header. */ | |
debd256d | 20765 | |
c906108c | 20766 | static void |
43f3e411 DE |
20767 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20768 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20769 | { |
d521ce57 TT |
20770 | const gdb_byte *line_ptr, *extended_end; |
20771 | const gdb_byte *line_end; | |
a8c50c1f | 20772 | unsigned int bytes_read, extended_len; |
699ca60a | 20773 | unsigned char op_code, extended_op; |
e142c38c | 20774 | CORE_ADDR baseaddr; |
518817b3 | 20775 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20776 | bfd *abfd = objfile->obfd; |
fbf65064 | 20777 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20778 | /* True if we're recording line info (as opposed to building partial |
20779 | symtabs and just interested in finding include files mentioned by | |
20780 | the line number program). */ | |
20781 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20782 | |
b3b3bada | 20783 | baseaddr = objfile->text_section_offset (); |
c906108c | 20784 | |
debd256d JB |
20785 | line_ptr = lh->statement_program_start; |
20786 | line_end = lh->statement_program_end; | |
c906108c SS |
20787 | |
20788 | /* Read the statement sequences until there's nothing left. */ | |
20789 | while (line_ptr < line_end) | |
20790 | { | |
6f77053d PA |
20791 | /* The DWARF line number program state machine. Reset the state |
20792 | machine at the start of each sequence. */ | |
804d2729 | 20793 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20794 | bool end_sequence = false; |
d9b3de22 | 20795 | |
8c43009f | 20796 | if (record_lines_p) |
c906108c | 20797 | { |
8c43009f PA |
20798 | /* Start a subfile for the current file of the state |
20799 | machine. */ | |
20800 | const file_entry *fe = state_machine.current_file (); | |
20801 | ||
20802 | if (fe != NULL) | |
804d2729 | 20803 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20804 | } |
20805 | ||
a738430d | 20806 | /* Decode the table. */ |
d9b3de22 | 20807 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20808 | { |
20809 | op_code = read_1_byte (abfd, line_ptr); | |
20810 | line_ptr += 1; | |
9aa1fe7e | 20811 | |
debd256d | 20812 | if (op_code >= lh->opcode_base) |
6e70227d | 20813 | { |
8e07a239 | 20814 | /* Special opcode. */ |
6f77053d | 20815 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20816 | } |
20817 | else switch (op_code) | |
c906108c SS |
20818 | { |
20819 | case DW_LNS_extended_op: | |
3e43a32a MS |
20820 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20821 | &bytes_read); | |
473b7be6 | 20822 | line_ptr += bytes_read; |
a8c50c1f | 20823 | extended_end = line_ptr + extended_len; |
c906108c SS |
20824 | extended_op = read_1_byte (abfd, line_ptr); |
20825 | line_ptr += 1; | |
20826 | switch (extended_op) | |
20827 | { | |
20828 | case DW_LNE_end_sequence: | |
6f77053d PA |
20829 | state_machine.handle_end_sequence (); |
20830 | end_sequence = true; | |
c906108c SS |
20831 | break; |
20832 | case DW_LNE_set_address: | |
d9b3de22 DE |
20833 | { |
20834 | CORE_ADDR address | |
20835 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20836 | line_ptr += bytes_read; |
6f77053d PA |
20837 | |
20838 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20839 | lowpc - baseaddr, address); |
6f77053d | 20840 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20841 | } |
c906108c SS |
20842 | break; |
20843 | case DW_LNE_define_file: | |
debd256d | 20844 | { |
d521ce57 | 20845 | const char *cur_file; |
ecfb656c PA |
20846 | unsigned int mod_time, length; |
20847 | dir_index dindex; | |
6e70227d | 20848 | |
3e43a32a MS |
20849 | cur_file = read_direct_string (abfd, line_ptr, |
20850 | &bytes_read); | |
debd256d | 20851 | line_ptr += bytes_read; |
ecfb656c | 20852 | dindex = (dir_index) |
debd256d JB |
20853 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20854 | line_ptr += bytes_read; | |
20855 | mod_time = | |
20856 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20857 | line_ptr += bytes_read; | |
20858 | length = | |
20859 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20860 | line_ptr += bytes_read; | |
ecfb656c | 20861 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20862 | } |
c906108c | 20863 | break; |
d0c6ba3d | 20864 | case DW_LNE_set_discriminator: |
6f77053d PA |
20865 | { |
20866 | /* The discriminator is not interesting to the | |
20867 | debugger; just ignore it. We still need to | |
20868 | check its value though: | |
20869 | if there are consecutive entries for the same | |
20870 | (non-prologue) line we want to coalesce them. | |
20871 | PR 17276. */ | |
20872 | unsigned int discr | |
20873 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20874 | line_ptr += bytes_read; | |
20875 | ||
20876 | state_machine.handle_set_discriminator (discr); | |
20877 | } | |
d0c6ba3d | 20878 | break; |
c906108c | 20879 | default: |
b98664d3 | 20880 | complaint (_("mangled .debug_line section")); |
debd256d | 20881 | return; |
c906108c | 20882 | } |
a8c50c1f DJ |
20883 | /* Make sure that we parsed the extended op correctly. If e.g. |
20884 | we expected a different address size than the producer used, | |
20885 | we may have read the wrong number of bytes. */ | |
20886 | if (line_ptr != extended_end) | |
20887 | { | |
b98664d3 | 20888 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20889 | return; |
20890 | } | |
c906108c SS |
20891 | break; |
20892 | case DW_LNS_copy: | |
6f77053d | 20893 | state_machine.handle_copy (); |
c906108c SS |
20894 | break; |
20895 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20896 | { |
20897 | CORE_ADDR adjust | |
20898 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20899 | line_ptr += bytes_read; |
6f77053d PA |
20900 | |
20901 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20902 | } |
c906108c SS |
20903 | break; |
20904 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20905 | { |
20906 | int line_delta | |
20907 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20908 | line_ptr += bytes_read; |
6f77053d PA |
20909 | |
20910 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20911 | } |
c906108c SS |
20912 | break; |
20913 | case DW_LNS_set_file: | |
d9b3de22 | 20914 | { |
6f77053d | 20915 | file_name_index file |
ecfb656c PA |
20916 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20917 | &bytes_read); | |
d9b3de22 | 20918 | line_ptr += bytes_read; |
8c43009f | 20919 | |
6f77053d | 20920 | state_machine.handle_set_file (file); |
d9b3de22 | 20921 | } |
c906108c SS |
20922 | break; |
20923 | case DW_LNS_set_column: | |
0ad93d4f | 20924 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20925 | line_ptr += bytes_read; |
20926 | break; | |
20927 | case DW_LNS_negate_stmt: | |
6f77053d | 20928 | state_machine.handle_negate_stmt (); |
c906108c SS |
20929 | break; |
20930 | case DW_LNS_set_basic_block: | |
c906108c | 20931 | break; |
c2c6d25f JM |
20932 | /* Add to the address register of the state machine the |
20933 | address increment value corresponding to special opcode | |
a738430d MK |
20934 | 255. I.e., this value is scaled by the minimum |
20935 | instruction length since special opcode 255 would have | |
b021a221 | 20936 | scaled the increment. */ |
c906108c | 20937 | case DW_LNS_const_add_pc: |
6f77053d | 20938 | state_machine.handle_const_add_pc (); |
c906108c SS |
20939 | break; |
20940 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20941 | { |
6f77053d | 20942 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20943 | line_ptr += 2; |
6f77053d PA |
20944 | |
20945 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20946 | } |
c906108c | 20947 | break; |
9aa1fe7e | 20948 | default: |
a738430d MK |
20949 | { |
20950 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20951 | int i; |
a738430d | 20952 | |
debd256d | 20953 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20954 | { |
20955 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20956 | line_ptr += bytes_read; | |
20957 | } | |
20958 | } | |
c906108c SS |
20959 | } |
20960 | } | |
d9b3de22 DE |
20961 | |
20962 | if (!end_sequence) | |
20963 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20964 | ||
20965 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20966 | in which case we still finish recording the last line). */ | |
6f77053d | 20967 | state_machine.record_line (true); |
c906108c | 20968 | } |
f3f5162e DE |
20969 | } |
20970 | ||
20971 | /* Decode the Line Number Program (LNP) for the given line_header | |
20972 | structure and CU. The actual information extracted and the type | |
20973 | of structures created from the LNP depends on the value of PST. | |
20974 | ||
20975 | 1. If PST is NULL, then this procedure uses the data from the program | |
20976 | to create all necessary symbol tables, and their linetables. | |
20977 | ||
20978 | 2. If PST is not NULL, this procedure reads the program to determine | |
20979 | the list of files included by the unit represented by PST, and | |
20980 | builds all the associated partial symbol tables. | |
20981 | ||
20982 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20983 | It is used for relative paths in the line table. | |
20984 | NOTE: When processing partial symtabs (pst != NULL), | |
20985 | comp_dir == pst->dirname. | |
20986 | ||
20987 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20988 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20989 | symtab we don't use it in the name of the psymtabs we create. | |
20990 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20991 | A good testcase for this is mb-inline.exp. |
20992 | ||
527f3840 JK |
20993 | LOWPC is the lowest address in CU (or 0 if not known). |
20994 | ||
20995 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20996 | for its PC<->lines mapping information. Otherwise only the filename | |
20997 | table is read in. */ | |
f3f5162e DE |
20998 | |
20999 | static void | |
21000 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21001 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21002 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21003 | { |
518817b3 | 21004 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21005 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21006 | |
527f3840 JK |
21007 | if (decode_mapping) |
21008 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21009 | |
21010 | if (decode_for_pst_p) | |
21011 | { | |
aaa75496 JB |
21012 | /* Now that we're done scanning the Line Header Program, we can |
21013 | create the psymtab of each included file. */ | |
7ba99d21 AT |
21014 | for (auto &file_entry : lh->file_names ()) |
21015 | if (file_entry.included_p == 1) | |
aaa75496 | 21016 | { |
c89b44cd | 21017 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21018 | const char *include_name = |
7ba99d21 AT |
21019 | psymtab_include_file_name (lh, file_entry, pst, |
21020 | comp_dir, &name_holder); | |
c6da4cef | 21021 | if (include_name != NULL) |
aaa75496 JB |
21022 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21023 | } | |
21024 | } | |
cb1df416 DJ |
21025 | else |
21026 | { | |
21027 | /* Make sure a symtab is created for every file, even files | |
21028 | which contain only variables (i.e. no code with associated | |
21029 | line numbers). */ | |
c24bdb02 KS |
21030 | buildsym_compunit *builder = cu->get_builder (); |
21031 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21032 | |
7ba99d21 | 21033 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21034 | { |
804d2729 | 21035 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21036 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21037 | { |
c24bdb02 | 21038 | builder->get_current_subfile ()->symtab |
804d2729 | 21039 | = allocate_symtab (cust, |
c24bdb02 | 21040 | builder->get_current_subfile ()->name); |
43f3e411 | 21041 | } |
c24bdb02 | 21042 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21043 | } |
21044 | } | |
c906108c SS |
21045 | } |
21046 | ||
21047 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21048 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21049 | or NULL if not known. |
c906108c SS |
21050 | This routine tries to keep line numbers from identical absolute and |
21051 | relative file names in a common subfile. | |
21052 | ||
21053 | Using the `list' example from the GDB testsuite, which resides in | |
21054 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21055 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21056 | ||
c5aa993b | 21057 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21058 | DW_AT_comp_dir: /compdir |
357e46e7 | 21059 | files.files[0].name: list0.h |
c5aa993b | 21060 | files.files[0].dir: /srcdir |
357e46e7 | 21061 | files.files[1].name: list0.c |
c5aa993b | 21062 | files.files[1].dir: /srcdir |
c906108c SS |
21063 | |
21064 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21065 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21066 | start_subfile will ensure that this happens provided that we pass the | |
21067 | concatenation of files.files[1].dir and files.files[1].name as the | |
21068 | subfile's name. */ | |
c906108c SS |
21069 | |
21070 | static void | |
804d2729 TT |
21071 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21072 | const char *dirname) | |
c906108c | 21073 | { |
43816ebc | 21074 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21075 | |
4d663531 | 21076 | /* In order not to lose the line information directory, |
4f1520fb FR |
21077 | we concatenate it to the filename when it makes sense. |
21078 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21079 | information): ``The directory index is ignored for file names | |
21080 | that represent full path names''. Thus ignoring dirname in the | |
21081 | `else' branch below isn't an issue. */ | |
c906108c | 21082 | |
d5166ae1 | 21083 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21084 | { |
43816ebc TT |
21085 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21086 | filename = copy.get (); | |
d521ce57 | 21087 | } |
c906108c | 21088 | |
c24bdb02 | 21089 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21090 | } |
21091 | ||
804d2729 TT |
21092 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21093 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21094 | |
c24bdb02 KS |
21095 | struct compunit_symtab * |
21096 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21097 | CORE_ADDR low_pc) | |
f4dc4d17 | 21098 | { |
c24bdb02 | 21099 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21100 | |
c24bdb02 KS |
21101 | m_builder.reset (new struct buildsym_compunit |
21102 | (per_cu->dwarf2_per_objfile->objfile, | |
21103 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 21104 | |
c24bdb02 | 21105 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21106 | |
c24bdb02 KS |
21107 | get_builder ()->record_debugformat ("DWARF 2"); |
21108 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21109 | |
c24bdb02 | 21110 | processing_has_namespace_info = false; |
43f3e411 | 21111 | |
c24bdb02 | 21112 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21113 | } |
21114 | ||
4c2df51b DJ |
21115 | static void |
21116 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21117 | struct dwarf2_cu *cu) |
4c2df51b | 21118 | { |
518817b3 | 21119 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21120 | struct comp_unit_head *cu_header = &cu->header; |
21121 | ||
4c2df51b DJ |
21122 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21123 | code here to turn a symbol with DW_AT_external and a | |
21124 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21125 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21126 | with some versions of binutils) where shared libraries could have | |
21127 | relocations against symbols in their debug information - the | |
21128 | minimal symbol would have the right address, but the debug info | |
21129 | would not. It's no longer necessary, because we will explicitly | |
21130 | apply relocations when we read in the debug information now. */ | |
21131 | ||
21132 | /* A DW_AT_location attribute with no contents indicates that a | |
21133 | variable has been optimized away. */ | |
4fc6c0d5 | 21134 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 21135 | { |
f1e6e072 | 21136 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21137 | return; |
21138 | } | |
21139 | ||
21140 | /* Handle one degenerate form of location expression specially, to | |
21141 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21142 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21143 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21144 | |
4fc6c0d5 | 21145 | if (attr->form_is_block () |
3019eac3 DE |
21146 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21147 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21148 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21149 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21150 | && (DW_BLOCK (attr)->size |
21151 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21152 | { |
891d2f0b | 21153 | unsigned int dummy; |
4c2df51b | 21154 | |
3019eac3 | 21155 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
38583298 TT |
21156 | SET_SYMBOL_VALUE_ADDRESS (sym, |
21157 | read_address (objfile->obfd, | |
21158 | DW_BLOCK (attr)->data + 1, | |
21159 | cu, &dummy)); | |
3019eac3 | 21160 | else |
38583298 TT |
21161 | SET_SYMBOL_VALUE_ADDRESS |
21162 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
21163 | &dummy)); | |
f1e6e072 | 21164 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 21165 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
21166 | SET_SYMBOL_VALUE_ADDRESS |
21167 | (sym, | |
21168 | SYMBOL_VALUE_ADDRESS (sym) | |
21169 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
21170 | return; |
21171 | } | |
21172 | ||
21173 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21174 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21175 | (i.e. when the value of a register or memory location is | |
21176 | referenced, or a thread-local block, etc.). Then again, it might | |
21177 | not be worthwhile. I'm assuming that it isn't unless performance | |
21178 | or memory numbers show me otherwise. */ | |
21179 | ||
f1e6e072 | 21180 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21181 | |
f1e6e072 | 21182 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21183 | cu->has_loclist = true; |
4c2df51b DJ |
21184 | } |
21185 | ||
c906108c SS |
21186 | /* Given a pointer to a DWARF information entry, figure out if we need |
21187 | to make a symbol table entry for it, and if so, create a new entry | |
21188 | and return a pointer to it. | |
21189 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21190 | used the passed type. |
21191 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21192 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21193 | |
21194 | static struct symbol * | |
5e2db402 TT |
21195 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21196 | struct symbol *space) | |
c906108c | 21197 | { |
518817b3 SM |
21198 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21199 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21200 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21201 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21202 | struct symbol *sym = NULL; |
15d034d0 | 21203 | const char *name; |
c906108c SS |
21204 | struct attribute *attr = NULL; |
21205 | struct attribute *attr2 = NULL; | |
e142c38c | 21206 | CORE_ADDR baseaddr; |
e37fd15a SW |
21207 | struct pending **list_to_add = NULL; |
21208 | ||
edb3359d | 21209 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21210 | |
b3b3bada | 21211 | baseaddr = objfile->text_section_offset (); |
c906108c | 21212 | |
94af9270 | 21213 | name = dwarf2_name (die, cu); |
c906108c SS |
21214 | if (name) |
21215 | { | |
94af9270 | 21216 | const char *linkagename; |
34eaf542 | 21217 | int suppress_add = 0; |
94af9270 | 21218 | |
34eaf542 TT |
21219 | if (space) |
21220 | sym = space; | |
21221 | else | |
e623cf5d | 21222 | sym = allocate_symbol (objfile); |
c906108c | 21223 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21224 | |
21225 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21226 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 21227 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 21228 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 21229 | |
f55ee35c JK |
21230 | /* Fortran does not have mangling standard and the mangling does differ |
21231 | between gfortran, iFort etc. */ | |
21232 | if (cu->language == language_fortran | |
468c0cbb CB |
21233 | && symbol_get_demangled_name (sym) == NULL) |
21234 | symbol_set_demangled_name (sym, | |
cfc594ee | 21235 | dwarf2_full_name (name, die, cu), |
29df156d | 21236 | NULL); |
f55ee35c | 21237 | |
c906108c | 21238 | /* Default assumptions. |
c5aa993b | 21239 | Use the passed type or decode it from the die. */ |
176620f1 | 21240 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21241 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21242 | if (type != NULL) |
21243 | SYMBOL_TYPE (sym) = type; | |
21244 | else | |
e7c27a73 | 21245 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21246 | attr = dwarf2_attr (die, |
21247 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21248 | cu); | |
435d3d88 | 21249 | if (attr != nullptr) |
c906108c SS |
21250 | { |
21251 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21252 | } | |
cb1df416 | 21253 | |
edb3359d DJ |
21254 | attr = dwarf2_attr (die, |
21255 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21256 | cu); | |
435d3d88 | 21257 | if (attr != nullptr) |
cb1df416 | 21258 | { |
ecfb656c | 21259 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21260 | struct file_entry *fe; |
9a619af0 | 21261 | |
ecfb656c PA |
21262 | if (cu->line_header != NULL) |
21263 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21264 | else |
21265 | fe = NULL; | |
21266 | ||
21267 | if (fe == NULL) | |
b98664d3 | 21268 | complaint (_("file index out of range")); |
8c43009f PA |
21269 | else |
21270 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21271 | } |
21272 | ||
c906108c SS |
21273 | switch (die->tag) |
21274 | { | |
21275 | case DW_TAG_label: | |
e142c38c | 21276 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21277 | if (attr != nullptr) |
3e29f34a MR |
21278 | { |
21279 | CORE_ADDR addr; | |
21280 | ||
cd6c91b4 | 21281 | addr = attr->value_as_address (); |
3e29f34a | 21282 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21283 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 21284 | } |
0f5238ed TT |
21285 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21286 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21287 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21288 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21289 | break; |
21290 | case DW_TAG_subprogram: | |
21291 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21292 | finish_block. */ | |
f1e6e072 | 21293 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21294 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 21295 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
21296 | || cu->language == language_ada |
21297 | || cu->language == language_fortran) | |
c906108c | 21298 | { |
2cfa0c8d | 21299 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
21300 | Ada and Fortran subprograms, whether marked external or |
21301 | not, are always stored as a global symbol, because we want | |
21302 | to be able to access them globally. For instance, we want | |
21303 | to be able to break on a nested subprogram without having | |
21304 | to specify the context. */ | |
c24bdb02 | 21305 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21306 | } |
21307 | else | |
21308 | { | |
e37fd15a | 21309 | list_to_add = cu->list_in_scope; |
c906108c SS |
21310 | } |
21311 | break; | |
edb3359d DJ |
21312 | case DW_TAG_inlined_subroutine: |
21313 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21314 | finish_block. */ | |
f1e6e072 | 21315 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21316 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21317 | list_to_add = cu->list_in_scope; |
edb3359d | 21318 | break; |
34eaf542 TT |
21319 | case DW_TAG_template_value_param: |
21320 | suppress_add = 1; | |
21321 | /* Fall through. */ | |
72929c62 | 21322 | case DW_TAG_constant: |
c906108c | 21323 | case DW_TAG_variable: |
254e6b9e | 21324 | case DW_TAG_member: |
0963b4bd MS |
21325 | /* Compilation with minimal debug info may result in |
21326 | variables with missing type entries. Change the | |
21327 | misleading `void' type to something sensible. */ | |
c906108c | 21328 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21329 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21330 | |
e142c38c | 21331 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21332 | /* In the case of DW_TAG_member, we should only be called for |
21333 | static const members. */ | |
21334 | if (die->tag == DW_TAG_member) | |
21335 | { | |
3863f96c DE |
21336 | /* dwarf2_add_field uses die_is_declaration, |
21337 | so we do the same. */ | |
254e6b9e DE |
21338 | gdb_assert (die_is_declaration (die, cu)); |
21339 | gdb_assert (attr); | |
21340 | } | |
435d3d88 | 21341 | if (attr != nullptr) |
c906108c | 21342 | { |
e7c27a73 | 21343 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21344 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21345 | if (!suppress_add) |
34eaf542 TT |
21346 | { |
21347 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21348 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21349 | else |
e37fd15a | 21350 | list_to_add = cu->list_in_scope; |
34eaf542 | 21351 | } |
c906108c SS |
21352 | break; |
21353 | } | |
e142c38c | 21354 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21355 | if (attr != nullptr) |
c906108c | 21356 | { |
e7c27a73 | 21357 | var_decode_location (attr, sym, cu); |
e142c38c | 21358 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21359 | |
21360 | /* Fortran explicitly imports any global symbols to the local | |
21361 | scope by DW_TAG_common_block. */ | |
21362 | if (cu->language == language_fortran && die->parent | |
21363 | && die->parent->tag == DW_TAG_common_block) | |
21364 | attr2 = NULL; | |
21365 | ||
caac4577 JG |
21366 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21367 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21368 | && !dwarf2_per_objfile->has_section_at_zero) | |
21369 | { | |
21370 | /* When a static variable is eliminated by the linker, | |
21371 | the corresponding debug information is not stripped | |
21372 | out, but the variable address is set to null; | |
21373 | do not add such variables into symbol table. */ | |
21374 | } | |
21375 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21376 | { |
4b610737 TT |
21377 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21378 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
21379 | && dwarf2_per_objfile->can_copy) | |
21380 | { | |
21381 | /* A global static variable might be subject to | |
21382 | copy relocation. We first check for a local | |
21383 | minsym, though, because maybe the symbol was | |
21384 | marked hidden, in which case this would not | |
21385 | apply. */ | |
21386 | bound_minimal_symbol found | |
21387 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21388 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21389 | if (found.minsym != nullptr) |
21390 | sym->maybe_copied = 1; | |
21391 | } | |
f55ee35c | 21392 | |
1c809c68 TT |
21393 | /* A variable with DW_AT_external is never static, |
21394 | but it may be block-scoped. */ | |
804d2729 | 21395 | list_to_add |
c24bdb02 KS |
21396 | = ((cu->list_in_scope |
21397 | == cu->get_builder ()->get_file_symbols ()) | |
21398 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21399 | : cu->list_in_scope); |
1c809c68 | 21400 | } |
c906108c | 21401 | else |
e37fd15a | 21402 | list_to_add = cu->list_in_scope; |
c906108c SS |
21403 | } |
21404 | else | |
21405 | { | |
21406 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21407 | If it is an external symbol and we have type information |
21408 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21409 | The address of the variable will then be determined from | |
21410 | the minimal symbol table whenever the variable is | |
21411 | referenced. */ | |
e142c38c | 21412 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21413 | |
21414 | /* Fortran explicitly imports any global symbols to the local | |
21415 | scope by DW_TAG_common_block. */ | |
21416 | if (cu->language == language_fortran && die->parent | |
21417 | && die->parent->tag == DW_TAG_common_block) | |
21418 | { | |
21419 | /* SYMBOL_CLASS doesn't matter here because | |
21420 | read_common_block is going to reset it. */ | |
21421 | if (!suppress_add) | |
21422 | list_to_add = cu->list_in_scope; | |
21423 | } | |
21424 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21425 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21426 | { |
0fe7935b DJ |
21427 | /* A variable with DW_AT_external is never static, but it |
21428 | may be block-scoped. */ | |
804d2729 | 21429 | list_to_add |
c24bdb02 KS |
21430 | = ((cu->list_in_scope |
21431 | == cu->get_builder ()->get_file_symbols ()) | |
21432 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21433 | : cu->list_in_scope); |
0fe7935b | 21434 | |
f1e6e072 | 21435 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21436 | } |
442ddf59 JK |
21437 | else if (!die_is_declaration (die, cu)) |
21438 | { | |
21439 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21440 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21441 | if (!suppress_add) |
21442 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21443 | } |
c906108c SS |
21444 | } |
21445 | break; | |
21446 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21447 | { |
21448 | /* If we are inside a function, mark this as an argument. If | |
21449 | not, we might be looking at an argument to an inlined function | |
21450 | when we do not have enough information to show inlined frames; | |
21451 | pretend it's a local variable in that case so that the user can | |
21452 | still see it. */ | |
804d2729 | 21453 | struct context_stack *curr |
c24bdb02 | 21454 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21455 | if (curr != nullptr && curr->name != nullptr) |
21456 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21457 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21458 | if (attr != nullptr) |
a60f3166 TT |
21459 | { |
21460 | var_decode_location (attr, sym, cu); | |
21461 | } | |
21462 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21463 | if (attr != nullptr) |
a60f3166 TT |
21464 | { |
21465 | dwarf2_const_value (attr, sym, cu); | |
21466 | } | |
f346a30d | 21467 | |
a60f3166 TT |
21468 | list_to_add = cu->list_in_scope; |
21469 | } | |
c906108c SS |
21470 | break; |
21471 | case DW_TAG_unspecified_parameters: | |
21472 | /* From varargs functions; gdb doesn't seem to have any | |
21473 | interest in this information, so just ignore it for now. | |
21474 | (FIXME?) */ | |
21475 | break; | |
34eaf542 TT |
21476 | case DW_TAG_template_type_param: |
21477 | suppress_add = 1; | |
21478 | /* Fall through. */ | |
c906108c | 21479 | case DW_TAG_class_type: |
680b30c7 | 21480 | case DW_TAG_interface_type: |
c906108c SS |
21481 | case DW_TAG_structure_type: |
21482 | case DW_TAG_union_type: | |
72019c9c | 21483 | case DW_TAG_set_type: |
c906108c | 21484 | case DW_TAG_enumeration_type: |
f1e6e072 | 21485 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21486 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21487 | |
63d06c5c | 21488 | { |
9c37b5ae | 21489 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21490 | really ever be static objects: otherwise, if you try |
21491 | to, say, break of a class's method and you're in a file | |
21492 | which doesn't mention that class, it won't work unless | |
21493 | the check for all static symbols in lookup_symbol_aux | |
21494 | saves you. See the OtherFileClass tests in | |
21495 | gdb.c++/namespace.exp. */ | |
21496 | ||
e37fd15a | 21497 | if (!suppress_add) |
34eaf542 | 21498 | { |
c24bdb02 | 21499 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21500 | list_to_add |
c24bdb02 | 21501 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21502 | && cu->language == language_cplus |
c24bdb02 | 21503 | ? builder->get_global_symbols () |
804d2729 | 21504 | : cu->list_in_scope); |
63d06c5c | 21505 | |
64382290 | 21506 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21507 | ... }" also defines a typedef for "foo". */ |
64382290 | 21508 | if (cu->language == language_cplus |
45280282 | 21509 | || cu->language == language_ada |
c44af4eb TT |
21510 | || cu->language == language_d |
21511 | || cu->language == language_rust) | |
64382290 TT |
21512 | { |
21513 | /* The symbol's name is already allocated along | |
21514 | with this objfile, so we don't need to | |
21515 | duplicate it for the type. */ | |
21516 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 21517 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 21518 | } |
63d06c5c DC |
21519 | } |
21520 | } | |
c906108c SS |
21521 | break; |
21522 | case DW_TAG_typedef: | |
f1e6e072 | 21523 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21524 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21525 | list_to_add = cu->list_in_scope; |
63d06c5c | 21526 | break; |
c906108c | 21527 | case DW_TAG_base_type: |
a02abb62 | 21528 | case DW_TAG_subrange_type: |
f1e6e072 | 21529 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21530 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21531 | list_to_add = cu->list_in_scope; |
c906108c SS |
21532 | break; |
21533 | case DW_TAG_enumerator: | |
e142c38c | 21534 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21535 | if (attr != nullptr) |
c906108c | 21536 | { |
e7c27a73 | 21537 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21538 | } |
63d06c5c DC |
21539 | { |
21540 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21541 | DW_TAG_class_type, etc. block. */ | |
21542 | ||
804d2729 | 21543 | list_to_add |
c24bdb02 | 21544 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21545 | && cu->language == language_cplus |
c24bdb02 | 21546 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21547 | : cu->list_in_scope); |
63d06c5c | 21548 | } |
c906108c | 21549 | break; |
74921315 | 21550 | case DW_TAG_imported_declaration: |
5c4e30ca | 21551 | case DW_TAG_namespace: |
f1e6e072 | 21552 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21553 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21554 | break; |
530e8392 KB |
21555 | case DW_TAG_module: |
21556 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21557 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21558 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21559 | break; |
4357ac6c | 21560 | case DW_TAG_common_block: |
f1e6e072 | 21561 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21562 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21563 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21564 | break; |
c906108c SS |
21565 | default: |
21566 | /* Not a tag we recognize. Hopefully we aren't processing | |
21567 | trash data, but since we must specifically ignore things | |
21568 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21569 | this point. */ |
b98664d3 | 21570 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21571 | dwarf_tag_name (die->tag)); |
c906108c SS |
21572 | break; |
21573 | } | |
df8a16a1 | 21574 | |
e37fd15a SW |
21575 | if (suppress_add) |
21576 | { | |
21577 | sym->hash_next = objfile->template_symbols; | |
21578 | objfile->template_symbols = sym; | |
21579 | list_to_add = NULL; | |
21580 | } | |
21581 | ||
21582 | if (list_to_add != NULL) | |
d3cb6808 | 21583 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21584 | |
df8a16a1 DJ |
21585 | /* For the benefit of old versions of GCC, check for anonymous |
21586 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21587 | if (!cu->processing_has_namespace_info |
94af9270 | 21588 | && cu->language == language_cplus) |
c24bdb02 | 21589 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21590 | } |
21591 | return (sym); | |
21592 | } | |
21593 | ||
98bfdba5 PA |
21594 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21595 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21596 | standard (v4) is not entirely clear about the meaning of using | |
21597 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21598 | wider than the data. The conclusion of a discussion on the DWARF | |
21599 | list was that this is unspecified. We choose to always zero-extend | |
21600 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21601 | |
98bfdba5 | 21602 | static gdb_byte * |
ff39bb5e | 21603 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21604 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21605 | { |
518817b3 | 21606 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21607 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21608 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21609 | LONGEST l = DW_UNSND (attr); |
21610 | ||
21611 | if (bits < sizeof (*value) * 8) | |
21612 | { | |
21613 | l &= ((LONGEST) 1 << bits) - 1; | |
21614 | *value = l; | |
21615 | } | |
21616 | else if (bits == sizeof (*value) * 8) | |
21617 | *value = l; | |
21618 | else | |
21619 | { | |
224c3ddb | 21620 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21621 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21622 | return bytes; | |
21623 | } | |
21624 | ||
21625 | return NULL; | |
21626 | } | |
21627 | ||
21628 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21629 | the value does not fit in *VALUE, set *BYTES - either already | |
21630 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21631 | or, set *BATON, if we translated the constant to a location | |
21632 | expression. */ | |
21633 | ||
21634 | static void | |
ff39bb5e | 21635 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21636 | const char *name, struct obstack *obstack, |
21637 | struct dwarf2_cu *cu, | |
d521ce57 | 21638 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21639 | struct dwarf2_locexpr_baton **baton) |
21640 | { | |
518817b3 | 21641 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21642 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21643 | struct dwarf_block *blk; |
98bfdba5 PA |
21644 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21645 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21646 | ||
21647 | *value = 0; | |
21648 | *bytes = NULL; | |
21649 | *baton = NULL; | |
c906108c SS |
21650 | |
21651 | switch (attr->form) | |
21652 | { | |
21653 | case DW_FORM_addr: | |
336d760d | 21654 | case DW_FORM_addrx: |
3019eac3 | 21655 | case DW_FORM_GNU_addr_index: |
ac56253d | 21656 | { |
ac56253d TT |
21657 | gdb_byte *data; |
21658 | ||
98bfdba5 PA |
21659 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21660 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21661 | cu_header->addr_size, |
98bfdba5 | 21662 | TYPE_LENGTH (type)); |
ac56253d TT |
21663 | /* Symbols of this form are reasonably rare, so we just |
21664 | piggyback on the existing location code rather than writing | |
21665 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21666 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21667 | (*baton)->per_cu = cu->per_cu; |
21668 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21669 | |
98bfdba5 | 21670 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21671 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21672 | (*baton)->data = data; |
ac56253d TT |
21673 | |
21674 | data[0] = DW_OP_addr; | |
21675 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21676 | byte_order, DW_ADDR (attr)); | |
21677 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21678 | } |
c906108c | 21679 | break; |
4ac36638 | 21680 | case DW_FORM_string: |
93b5768b | 21681 | case DW_FORM_strp: |
cf532bd1 | 21682 | case DW_FORM_strx: |
3019eac3 | 21683 | case DW_FORM_GNU_str_index: |
36586728 | 21684 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21685 | /* DW_STRING is already allocated on the objfile obstack, point |
21686 | directly to it. */ | |
d521ce57 | 21687 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21688 | break; |
c906108c SS |
21689 | case DW_FORM_block1: |
21690 | case DW_FORM_block2: | |
21691 | case DW_FORM_block4: | |
21692 | case DW_FORM_block: | |
2dc7f7b3 | 21693 | case DW_FORM_exprloc: |
0224619f | 21694 | case DW_FORM_data16: |
c906108c | 21695 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21696 | if (TYPE_LENGTH (type) != blk->size) |
21697 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21698 | TYPE_LENGTH (type)); | |
21699 | *bytes = blk->data; | |
c906108c | 21700 | break; |
2df3850c JM |
21701 | |
21702 | /* The DW_AT_const_value attributes are supposed to carry the | |
21703 | symbol's value "represented as it would be on the target | |
21704 | architecture." By the time we get here, it's already been | |
21705 | converted to host endianness, so we just need to sign- or | |
21706 | zero-extend it as appropriate. */ | |
21707 | case DW_FORM_data1: | |
3aef2284 | 21708 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21709 | break; |
c906108c | 21710 | case DW_FORM_data2: |
3aef2284 | 21711 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21712 | break; |
c906108c | 21713 | case DW_FORM_data4: |
3aef2284 | 21714 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21715 | break; |
c906108c | 21716 | case DW_FORM_data8: |
3aef2284 | 21717 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21718 | break; |
21719 | ||
c906108c | 21720 | case DW_FORM_sdata: |
663c44ac | 21721 | case DW_FORM_implicit_const: |
98bfdba5 | 21722 | *value = DW_SND (attr); |
2df3850c JM |
21723 | break; |
21724 | ||
c906108c | 21725 | case DW_FORM_udata: |
98bfdba5 | 21726 | *value = DW_UNSND (attr); |
c906108c | 21727 | break; |
2df3850c | 21728 | |
c906108c | 21729 | default: |
b98664d3 | 21730 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21731 | dwarf_form_name (attr->form)); |
98bfdba5 | 21732 | *value = 0; |
c906108c SS |
21733 | break; |
21734 | } | |
21735 | } | |
21736 | ||
2df3850c | 21737 | |
98bfdba5 PA |
21738 | /* Copy constant value from an attribute to a symbol. */ |
21739 | ||
2df3850c | 21740 | static void |
ff39bb5e | 21741 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21742 | struct dwarf2_cu *cu) |
2df3850c | 21743 | { |
518817b3 | 21744 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21745 | LONGEST value; |
d521ce57 | 21746 | const gdb_byte *bytes; |
98bfdba5 | 21747 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21748 | |
98bfdba5 | 21749 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21750 | sym->print_name (), |
98bfdba5 PA |
21751 | &objfile->objfile_obstack, cu, |
21752 | &value, &bytes, &baton); | |
2df3850c | 21753 | |
98bfdba5 PA |
21754 | if (baton != NULL) |
21755 | { | |
98bfdba5 | 21756 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21757 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21758 | } |
21759 | else if (bytes != NULL) | |
21760 | { | |
21761 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21762 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21763 | } |
21764 | else | |
21765 | { | |
21766 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21767 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21768 | } |
2df3850c JM |
21769 | } |
21770 | ||
c906108c SS |
21771 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21772 | ||
21773 | static struct type * | |
e7c27a73 | 21774 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21775 | { |
c906108c | 21776 | struct attribute *type_attr; |
c906108c | 21777 | |
e142c38c | 21778 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21779 | if (!type_attr) |
21780 | { | |
518817b3 | 21781 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21782 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21783 | return objfile_type (objfile)->builtin_void; |
c906108c | 21784 | } |
348e048f | 21785 | |
673bfd45 | 21786 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21787 | } |
21788 | ||
b4ba55a1 JB |
21789 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21790 | that allows to find parallel types through that information instead | |
21791 | of having to do expensive parallel lookups by type name. */ | |
21792 | ||
21793 | static int | |
21794 | need_gnat_info (struct dwarf2_cu *cu) | |
21795 | { | |
de4cb04a JB |
21796 | /* Assume that the Ada compiler was GNAT, which always produces |
21797 | the auxiliary information. */ | |
21798 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21799 | } |
21800 | ||
b4ba55a1 JB |
21801 | /* Return the auxiliary type of the die in question using its |
21802 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21803 | attribute is not present. */ | |
21804 | ||
21805 | static struct type * | |
21806 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21807 | { | |
b4ba55a1 | 21808 | struct attribute *type_attr; |
b4ba55a1 JB |
21809 | |
21810 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21811 | if (!type_attr) | |
21812 | return NULL; | |
21813 | ||
673bfd45 | 21814 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21815 | } |
21816 | ||
21817 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21818 | descriptive type accordingly. */ | |
21819 | ||
21820 | static void | |
21821 | set_descriptive_type (struct type *type, struct die_info *die, | |
21822 | struct dwarf2_cu *cu) | |
21823 | { | |
21824 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21825 | ||
21826 | if (descriptive_type) | |
21827 | { | |
21828 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21829 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21830 | } | |
21831 | } | |
21832 | ||
c906108c SS |
21833 | /* Return the containing type of the die in question using its |
21834 | DW_AT_containing_type attribute. */ | |
21835 | ||
21836 | static struct type * | |
e7c27a73 | 21837 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21838 | { |
c906108c | 21839 | struct attribute *type_attr; |
518817b3 | 21840 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21841 | |
e142c38c | 21842 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21843 | if (!type_attr) |
21844 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21845 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21846 | |
673bfd45 | 21847 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21848 | } |
21849 | ||
ac9ec31b DE |
21850 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21851 | ||
21852 | static struct type * | |
21853 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21854 | { | |
518817b3 SM |
21855 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21856 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21857 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21858 | char *saved; |
ac9ec31b | 21859 | |
528e1572 SM |
21860 | std::string message |
21861 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21862 | objfile_name (objfile), | |
21863 | sect_offset_str (cu->header.sect_off), | |
21864 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21865 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21866 | |
19f392bc | 21867 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21868 | } |
21869 | ||
673bfd45 | 21870 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21871 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21872 | DW_AT_containing_type. | |
673bfd45 DE |
21873 | If there is no type substitute an error marker. */ |
21874 | ||
c906108c | 21875 | static struct type * |
ff39bb5e | 21876 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21877 | struct dwarf2_cu *cu) |
c906108c | 21878 | { |
518817b3 SM |
21879 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21880 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21881 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21882 | struct type *this_type; |
21883 | ||
ac9ec31b DE |
21884 | gdb_assert (attr->name == DW_AT_type |
21885 | || attr->name == DW_AT_GNAT_descriptive_type | |
21886 | || attr->name == DW_AT_containing_type); | |
21887 | ||
673bfd45 DE |
21888 | /* First see if we have it cached. */ |
21889 | ||
36586728 TT |
21890 | if (attr->form == DW_FORM_GNU_ref_alt) |
21891 | { | |
21892 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21893 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21894 | |
ed2dc618 SM |
21895 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21896 | dwarf2_per_objfile); | |
9c541725 | 21897 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21898 | } |
cd6c91b4 | 21899 | else if (attr->form_is_ref ()) |
673bfd45 | 21900 | { |
9c541725 | 21901 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21902 | |
9c541725 | 21903 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21904 | } |
55f1336d | 21905 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21906 | { |
ac9ec31b | 21907 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21908 | |
ac9ec31b | 21909 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21910 | } |
21911 | else | |
21912 | { | |
b98664d3 | 21913 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21914 | " at %s [in module %s]"), |
21915 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21916 | objfile_name (objfile)); |
ac9ec31b | 21917 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21918 | } |
21919 | ||
21920 | /* If not cached we need to read it in. */ | |
21921 | ||
21922 | if (this_type == NULL) | |
21923 | { | |
ac9ec31b | 21924 | struct die_info *type_die = NULL; |
673bfd45 DE |
21925 | struct dwarf2_cu *type_cu = cu; |
21926 | ||
cd6c91b4 | 21927 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21928 | type_die = follow_die_ref (die, attr, &type_cu); |
21929 | if (type_die == NULL) | |
21930 | return build_error_marker_type (cu, die); | |
21931 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21932 | from an inter-CU reference and the type's CU got expanded before |
21933 | ours. */ | |
ac9ec31b | 21934 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21935 | } |
21936 | ||
21937 | /* If we still don't have a type use an error marker. */ | |
21938 | ||
21939 | if (this_type == NULL) | |
ac9ec31b | 21940 | return build_error_marker_type (cu, die); |
673bfd45 | 21941 | |
f792889a | 21942 | return this_type; |
c906108c SS |
21943 | } |
21944 | ||
673bfd45 DE |
21945 | /* Return the type in DIE, CU. |
21946 | Returns NULL for invalid types. | |
21947 | ||
02142a6c | 21948 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21949 | and only reads the die in if necessary. |
21950 | ||
21951 | NOTE: This can be called when reading in partial or full symbols. */ | |
21952 | ||
f792889a | 21953 | static struct type * |
e7c27a73 | 21954 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21955 | { |
f792889a DJ |
21956 | struct type *this_type; |
21957 | ||
21958 | this_type = get_die_type (die, cu); | |
21959 | if (this_type) | |
21960 | return this_type; | |
21961 | ||
673bfd45 DE |
21962 | return read_type_die_1 (die, cu); |
21963 | } | |
21964 | ||
21965 | /* Read the type in DIE, CU. | |
21966 | Returns NULL for invalid types. */ | |
21967 | ||
21968 | static struct type * | |
21969 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21970 | { | |
21971 | struct type *this_type = NULL; | |
21972 | ||
c906108c SS |
21973 | switch (die->tag) |
21974 | { | |
21975 | case DW_TAG_class_type: | |
680b30c7 | 21976 | case DW_TAG_interface_type: |
c906108c SS |
21977 | case DW_TAG_structure_type: |
21978 | case DW_TAG_union_type: | |
f792889a | 21979 | this_type = read_structure_type (die, cu); |
c906108c SS |
21980 | break; |
21981 | case DW_TAG_enumeration_type: | |
f792889a | 21982 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21983 | break; |
21984 | case DW_TAG_subprogram: | |
21985 | case DW_TAG_subroutine_type: | |
edb3359d | 21986 | case DW_TAG_inlined_subroutine: |
f792889a | 21987 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21988 | break; |
21989 | case DW_TAG_array_type: | |
f792889a | 21990 | this_type = read_array_type (die, cu); |
c906108c | 21991 | break; |
72019c9c | 21992 | case DW_TAG_set_type: |
f792889a | 21993 | this_type = read_set_type (die, cu); |
72019c9c | 21994 | break; |
c906108c | 21995 | case DW_TAG_pointer_type: |
f792889a | 21996 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21997 | break; |
21998 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21999 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22000 | break; |
22001 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22002 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22003 | break; | |
22004 | case DW_TAG_rvalue_reference_type: | |
22005 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22006 | break; |
22007 | case DW_TAG_const_type: | |
f792889a | 22008 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22009 | break; |
22010 | case DW_TAG_volatile_type: | |
f792889a | 22011 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22012 | break; |
06d66ee9 TT |
22013 | case DW_TAG_restrict_type: |
22014 | this_type = read_tag_restrict_type (die, cu); | |
22015 | break; | |
c906108c | 22016 | case DW_TAG_string_type: |
f792889a | 22017 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22018 | break; |
22019 | case DW_TAG_typedef: | |
f792889a | 22020 | this_type = read_typedef (die, cu); |
c906108c | 22021 | break; |
a02abb62 | 22022 | case DW_TAG_subrange_type: |
f792889a | 22023 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22024 | break; |
c906108c | 22025 | case DW_TAG_base_type: |
f792889a | 22026 | this_type = read_base_type (die, cu); |
c906108c | 22027 | break; |
81a17f79 | 22028 | case DW_TAG_unspecified_type: |
f792889a | 22029 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22030 | break; |
0114d602 DJ |
22031 | case DW_TAG_namespace: |
22032 | this_type = read_namespace_type (die, cu); | |
22033 | break; | |
f55ee35c JK |
22034 | case DW_TAG_module: |
22035 | this_type = read_module_type (die, cu); | |
22036 | break; | |
a2c2acaf MW |
22037 | case DW_TAG_atomic_type: |
22038 | this_type = read_tag_atomic_type (die, cu); | |
22039 | break; | |
c906108c | 22040 | default: |
b98664d3 | 22041 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22042 | dwarf_tag_name (die->tag)); |
c906108c SS |
22043 | break; |
22044 | } | |
63d06c5c | 22045 | |
f792889a | 22046 | return this_type; |
63d06c5c DC |
22047 | } |
22048 | ||
abc72ce4 DE |
22049 | /* See if we can figure out if the class lives in a namespace. We do |
22050 | this by looking for a member function; its demangled name will | |
22051 | contain namespace info, if there is any. | |
22052 | Return the computed name or NULL. | |
22053 | Space for the result is allocated on the objfile's obstack. | |
22054 | This is the full-die version of guess_partial_die_structure_name. | |
22055 | In this case we know DIE has no useful parent. */ | |
22056 | ||
43816ebc | 22057 | static const char * |
abc72ce4 DE |
22058 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22059 | { | |
22060 | struct die_info *spec_die; | |
22061 | struct dwarf2_cu *spec_cu; | |
22062 | struct die_info *child; | |
518817b3 | 22063 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22064 | |
22065 | spec_cu = cu; | |
22066 | spec_die = die_specification (die, &spec_cu); | |
22067 | if (spec_die != NULL) | |
22068 | { | |
22069 | die = spec_die; | |
22070 | cu = spec_cu; | |
22071 | } | |
22072 | ||
22073 | for (child = die->child; | |
22074 | child != NULL; | |
22075 | child = child->sibling) | |
22076 | { | |
22077 | if (child->tag == DW_TAG_subprogram) | |
22078 | { | |
73b9be8b | 22079 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22080 | |
7d45c7c3 | 22081 | if (linkage_name != NULL) |
abc72ce4 | 22082 | { |
43816ebc TT |
22083 | gdb::unique_xmalloc_ptr<char> actual_name |
22084 | (language_class_name_from_physname (cu->language_defn, | |
22085 | linkage_name)); | |
22086 | const char *name = NULL; | |
abc72ce4 DE |
22087 | |
22088 | if (actual_name != NULL) | |
22089 | { | |
15d034d0 | 22090 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22091 | |
22092 | if (die_name != NULL | |
43816ebc | 22093 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22094 | { |
22095 | /* Strip off the class name from the full name. | |
22096 | We want the prefix. */ | |
22097 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22098 | int actual_name_len = strlen (actual_name.get ()); |
22099 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22100 | |
22101 | /* Test for '::' as a sanity check. */ | |
22102 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22103 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22104 | name = obstack_strndup ( |
e3b94546 | 22105 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22106 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22107 | } |
22108 | } | |
abc72ce4 DE |
22109 | return name; |
22110 | } | |
22111 | } | |
22112 | } | |
22113 | ||
22114 | return NULL; | |
22115 | } | |
22116 | ||
96408a79 SA |
22117 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22118 | prefix part in such case. See | |
22119 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22120 | ||
a121b7c1 | 22121 | static const char * |
96408a79 SA |
22122 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22123 | { | |
22124 | struct attribute *attr; | |
e6a959d6 | 22125 | const char *base; |
96408a79 SA |
22126 | |
22127 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22128 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22129 | return NULL; | |
22130 | ||
7d45c7c3 | 22131 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22132 | return NULL; |
22133 | ||
73b9be8b | 22134 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22135 | if (attr == NULL || DW_STRING (attr) == NULL) |
22136 | return NULL; | |
22137 | ||
22138 | /* dwarf2_name had to be already called. */ | |
22139 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22140 | ||
22141 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22142 | base = strrchr (DW_STRING (attr), ':'); | |
22143 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22144 | return ""; | |
22145 | ||
518817b3 | 22146 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
22147 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
22148 | DW_STRING (attr), | |
22149 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22150 | } |
22151 | ||
fdde2d81 | 22152 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22153 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22154 | |
0114d602 DJ |
22155 | For example, if we're within the method foo() in the following |
22156 | code: | |
22157 | ||
22158 | namespace N { | |
22159 | class C { | |
22160 | void foo () { | |
22161 | } | |
22162 | }; | |
22163 | } | |
22164 | ||
22165 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22166 | |
0d5cff50 | 22167 | static const char * |
e142c38c | 22168 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22169 | { |
518817b3 SM |
22170 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22171 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22172 | struct die_info *parent, *spec_die; |
22173 | struct dwarf2_cu *spec_cu; | |
22174 | struct type *parent_type; | |
a121b7c1 | 22175 | const char *retval; |
63d06c5c | 22176 | |
9c37b5ae | 22177 | if (cu->language != language_cplus |
c44af4eb TT |
22178 | && cu->language != language_fortran && cu->language != language_d |
22179 | && cu->language != language_rust) | |
0114d602 DJ |
22180 | return ""; |
22181 | ||
96408a79 SA |
22182 | retval = anonymous_struct_prefix (die, cu); |
22183 | if (retval) | |
22184 | return retval; | |
22185 | ||
0114d602 DJ |
22186 | /* We have to be careful in the presence of DW_AT_specification. |
22187 | For example, with GCC 3.4, given the code | |
22188 | ||
22189 | namespace N { | |
22190 | void foo() { | |
22191 | // Definition of N::foo. | |
22192 | } | |
22193 | } | |
22194 | ||
22195 | then we'll have a tree of DIEs like this: | |
22196 | ||
22197 | 1: DW_TAG_compile_unit | |
22198 | 2: DW_TAG_namespace // N | |
22199 | 3: DW_TAG_subprogram // declaration of N::foo | |
22200 | 4: DW_TAG_subprogram // definition of N::foo | |
22201 | DW_AT_specification // refers to die #3 | |
22202 | ||
22203 | Thus, when processing die #4, we have to pretend that we're in | |
22204 | the context of its DW_AT_specification, namely the contex of die | |
22205 | #3. */ | |
22206 | spec_cu = cu; | |
22207 | spec_die = die_specification (die, &spec_cu); | |
22208 | if (spec_die == NULL) | |
22209 | parent = die->parent; | |
22210 | else | |
63d06c5c | 22211 | { |
0114d602 DJ |
22212 | parent = spec_die->parent; |
22213 | cu = spec_cu; | |
63d06c5c | 22214 | } |
0114d602 DJ |
22215 | |
22216 | if (parent == NULL) | |
22217 | return ""; | |
98bfdba5 PA |
22218 | else if (parent->building_fullname) |
22219 | { | |
22220 | const char *name; | |
22221 | const char *parent_name; | |
22222 | ||
22223 | /* It has been seen on RealView 2.2 built binaries, | |
22224 | DW_TAG_template_type_param types actually _defined_ as | |
22225 | children of the parent class: | |
22226 | ||
22227 | enum E {}; | |
22228 | template class <class Enum> Class{}; | |
22229 | Class<enum E> class_e; | |
22230 | ||
22231 | 1: DW_TAG_class_type (Class) | |
22232 | 2: DW_TAG_enumeration_type (E) | |
22233 | 3: DW_TAG_enumerator (enum1:0) | |
22234 | 3: DW_TAG_enumerator (enum2:1) | |
22235 | ... | |
22236 | 2: DW_TAG_template_type_param | |
22237 | DW_AT_type DW_FORM_ref_udata (E) | |
22238 | ||
22239 | Besides being broken debug info, it can put GDB into an | |
22240 | infinite loop. Consider: | |
22241 | ||
22242 | When we're building the full name for Class<E>, we'll start | |
22243 | at Class, and go look over its template type parameters, | |
22244 | finding E. We'll then try to build the full name of E, and | |
22245 | reach here. We're now trying to build the full name of E, | |
22246 | and look over the parent DIE for containing scope. In the | |
22247 | broken case, if we followed the parent DIE of E, we'd again | |
22248 | find Class, and once again go look at its template type | |
22249 | arguments, etc., etc. Simply don't consider such parent die | |
22250 | as source-level parent of this die (it can't be, the language | |
22251 | doesn't allow it), and break the loop here. */ | |
22252 | name = dwarf2_name (die, cu); | |
22253 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22254 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22255 | name ? name : "<unknown>", |
22256 | parent_name ? parent_name : "<unknown>"); | |
22257 | return ""; | |
22258 | } | |
63d06c5c | 22259 | else |
0114d602 DJ |
22260 | switch (parent->tag) |
22261 | { | |
63d06c5c | 22262 | case DW_TAG_namespace: |
0114d602 | 22263 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22264 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22265 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22266 | Work around this problem here. */ | |
22267 | if (cu->language == language_cplus | |
e86ca25f | 22268 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22269 | return ""; |
0114d602 | 22270 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22271 | return TYPE_NAME (parent_type); |
63d06c5c | 22272 | case DW_TAG_class_type: |
680b30c7 | 22273 | case DW_TAG_interface_type: |
63d06c5c | 22274 | case DW_TAG_structure_type: |
0114d602 | 22275 | case DW_TAG_union_type: |
f55ee35c | 22276 | case DW_TAG_module: |
0114d602 | 22277 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22278 | if (TYPE_NAME (parent_type) != NULL) |
22279 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22280 | else |
22281 | /* An anonymous structure is only allowed non-static data | |
22282 | members; no typedefs, no member functions, et cetera. | |
22283 | So it does not need a prefix. */ | |
22284 | return ""; | |
abc72ce4 | 22285 | case DW_TAG_compile_unit: |
95554aad | 22286 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22287 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22288 | if (cu->language == language_cplus | |
fd5866f6 | 22289 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
22290 | && die->child != NULL |
22291 | && (die->tag == DW_TAG_class_type | |
22292 | || die->tag == DW_TAG_structure_type | |
22293 | || die->tag == DW_TAG_union_type)) | |
22294 | { | |
43816ebc | 22295 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22296 | if (name != NULL) |
22297 | return name; | |
22298 | } | |
22299 | return ""; | |
0a4b0913 AB |
22300 | case DW_TAG_subprogram: |
22301 | /* Nested subroutines in Fortran get a prefix with the name | |
22302 | of the parent's subroutine. */ | |
22303 | if (cu->language == language_fortran) | |
22304 | { | |
22305 | if ((die->tag == DW_TAG_subprogram) | |
22306 | && (dwarf2_name (parent, cu) != NULL)) | |
22307 | return dwarf2_name (parent, cu); | |
22308 | } | |
22309 | return determine_prefix (parent, cu); | |
3d567982 TT |
22310 | case DW_TAG_enumeration_type: |
22311 | parent_type = read_type_die (parent, cu); | |
22312 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22313 | { | |
e86ca25f TT |
22314 | if (TYPE_NAME (parent_type) != NULL) |
22315 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22316 | return ""; |
22317 | } | |
22318 | /* Fall through. */ | |
63d06c5c | 22319 | default: |
8176b9b8 | 22320 | return determine_prefix (parent, cu); |
63d06c5c | 22321 | } |
63d06c5c DC |
22322 | } |
22323 | ||
3e43a32a MS |
22324 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22325 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22326 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22327 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22328 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22329 | |
f55ee35c | 22330 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22331 | |
22332 | static char * | |
f55ee35c JK |
22333 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22334 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22335 | { |
f55ee35c | 22336 | const char *lead = ""; |
5c315b68 | 22337 | const char *sep; |
63d06c5c | 22338 | |
3e43a32a MS |
22339 | if (suffix == NULL || suffix[0] == '\0' |
22340 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22341 | sep = ""; |
45280282 IB |
22342 | else if (cu->language == language_d) |
22343 | { | |
22344 | /* For D, the 'main' function could be defined in any module, but it | |
22345 | should never be prefixed. */ | |
22346 | if (strcmp (suffix, "D main") == 0) | |
22347 | { | |
22348 | prefix = ""; | |
22349 | sep = ""; | |
22350 | } | |
22351 | else | |
22352 | sep = "."; | |
22353 | } | |
f55ee35c JK |
22354 | else if (cu->language == language_fortran && physname) |
22355 | { | |
22356 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22357 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22358 | ||
22359 | lead = "__"; | |
22360 | sep = "_MOD_"; | |
22361 | } | |
987504bb JJ |
22362 | else |
22363 | sep = "::"; | |
63d06c5c | 22364 | |
6dd47d34 DE |
22365 | if (prefix == NULL) |
22366 | prefix = ""; | |
22367 | if (suffix == NULL) | |
22368 | suffix = ""; | |
22369 | ||
987504bb JJ |
22370 | if (obs == NULL) |
22371 | { | |
3e43a32a | 22372 | char *retval |
224c3ddb SM |
22373 | = ((char *) |
22374 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22375 | |
f55ee35c JK |
22376 | strcpy (retval, lead); |
22377 | strcat (retval, prefix); | |
6dd47d34 DE |
22378 | strcat (retval, sep); |
22379 | strcat (retval, suffix); | |
63d06c5c DC |
22380 | return retval; |
22381 | } | |
987504bb JJ |
22382 | else |
22383 | { | |
22384 | /* We have an obstack. */ | |
f55ee35c | 22385 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22386 | } |
63d06c5c DC |
22387 | } |
22388 | ||
c906108c SS |
22389 | /* Return sibling of die, NULL if no sibling. */ |
22390 | ||
f9aca02d | 22391 | static struct die_info * |
fba45db2 | 22392 | sibling_die (struct die_info *die) |
c906108c | 22393 | { |
639d11d3 | 22394 | return die->sibling; |
c906108c SS |
22395 | } |
22396 | ||
71c25dea TT |
22397 | /* Get name of a die, return NULL if not found. */ |
22398 | ||
15d034d0 TT |
22399 | static const char * |
22400 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22401 | struct obstack *obstack) |
22402 | { | |
22403 | if (name && cu->language == language_cplus) | |
22404 | { | |
2f408ecb | 22405 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22406 | |
2f408ecb | 22407 | if (!canon_name.empty ()) |
71c25dea | 22408 | { |
2f408ecb | 22409 | if (canon_name != name) |
efba19b0 | 22410 | name = obstack_strdup (obstack, canon_name); |
71c25dea TT |
22411 | } |
22412 | } | |
22413 | ||
22414 | return name; | |
c906108c SS |
22415 | } |
22416 | ||
96553a0c DE |
22417 | /* Get name of a die, return NULL if not found. |
22418 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22419 | |
15d034d0 | 22420 | static const char * |
e142c38c | 22421 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22422 | { |
22423 | struct attribute *attr; | |
518817b3 | 22424 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22425 | |
e142c38c | 22426 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22427 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22428 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22429 | && die->tag != DW_TAG_class_type |
22430 | && die->tag != DW_TAG_interface_type | |
22431 | && die->tag != DW_TAG_structure_type | |
22432 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22433 | return NULL; |
22434 | ||
22435 | switch (die->tag) | |
22436 | { | |
22437 | case DW_TAG_compile_unit: | |
95554aad | 22438 | case DW_TAG_partial_unit: |
71c25dea TT |
22439 | /* Compilation units have a DW_AT_name that is a filename, not |
22440 | a source language identifier. */ | |
22441 | case DW_TAG_enumeration_type: | |
22442 | case DW_TAG_enumerator: | |
22443 | /* These tags always have simple identifiers already; no need | |
22444 | to canonicalize them. */ | |
22445 | return DW_STRING (attr); | |
907af001 | 22446 | |
96553a0c DE |
22447 | case DW_TAG_namespace: |
22448 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22449 | return DW_STRING (attr); | |
22450 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22451 | ||
907af001 UW |
22452 | case DW_TAG_class_type: |
22453 | case DW_TAG_interface_type: | |
22454 | case DW_TAG_structure_type: | |
22455 | case DW_TAG_union_type: | |
22456 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22457 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22458 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22459 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22460 | if (attr && DW_STRING (attr) |
61012eef GB |
22461 | && (startswith (DW_STRING (attr), "._") |
22462 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22463 | return NULL; |
53832f31 TT |
22464 | |
22465 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22466 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22467 | if (!attr || DW_STRING (attr) == NULL) | |
22468 | { | |
73b9be8b | 22469 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22470 | if (attr == NULL || DW_STRING (attr) == NULL) |
22471 | return NULL; | |
22472 | ||
df5c6c50 JK |
22473 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22474 | call for the same DIE. */ | |
22475 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22476 | { |
43816ebc TT |
22477 | gdb::unique_xmalloc_ptr<char> demangled |
22478 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
22479 | ||
e6a959d6 | 22480 | const char *base; |
96408a79 | 22481 | |
53832f31 | 22482 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22483 | DW_STRING (attr) |
021887d8 | 22484 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 22485 | demangled.get ()); |
53832f31 | 22486 | DW_STRING_IS_CANONICAL (attr) = 1; |
96408a79 SA |
22487 | |
22488 | /* Strip any leading namespaces/classes, keep only the base name. | |
22489 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22490 | base = strrchr (DW_STRING (attr), ':'); | |
22491 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22492 | return &base[1]; | |
22493 | else | |
22494 | return DW_STRING (attr); | |
53832f31 TT |
22495 | } |
22496 | } | |
907af001 UW |
22497 | break; |
22498 | ||
71c25dea | 22499 | default: |
907af001 UW |
22500 | break; |
22501 | } | |
22502 | ||
22503 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22504 | { | |
22505 | DW_STRING (attr) | |
22506 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22507 | &objfile->per_bfd->storage_obstack); |
907af001 | 22508 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22509 | } |
907af001 | 22510 | return DW_STRING (attr); |
9219021c DC |
22511 | } |
22512 | ||
22513 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22514 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22515 | containing the return value on output. */ | |
9219021c DC |
22516 | |
22517 | static struct die_info * | |
f2f0e013 | 22518 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22519 | { |
22520 | struct attribute *attr; | |
9219021c | 22521 | |
f2f0e013 | 22522 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22523 | if (attr == NULL) |
22524 | return NULL; | |
22525 | ||
f2f0e013 | 22526 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22527 | } |
22528 | ||
fa9c3fa0 TT |
22529 | /* A convenience function that returns an "unknown" DWARF name, |
22530 | including the value of V. STR is the name of the entity being | |
22531 | printed, e.g., "TAG". */ | |
22532 | ||
22533 | static const char * | |
22534 | dwarf_unknown (const char *str, unsigned v) | |
22535 | { | |
22536 | char *cell = get_print_cell (); | |
22537 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
22538 | return cell; | |
22539 | } | |
22540 | ||
c906108c SS |
22541 | /* Convert a DIE tag into its string name. */ |
22542 | ||
f39c6ffd | 22543 | static const char * |
aa1ee363 | 22544 | dwarf_tag_name (unsigned tag) |
c906108c | 22545 | { |
f39c6ffd TT |
22546 | const char *name = get_DW_TAG_name (tag); |
22547 | ||
22548 | if (name == NULL) | |
fa9c3fa0 | 22549 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
22550 | |
22551 | return name; | |
c906108c SS |
22552 | } |
22553 | ||
22554 | /* Convert a DWARF attribute code into its string name. */ | |
22555 | ||
f39c6ffd | 22556 | static const char * |
aa1ee363 | 22557 | dwarf_attr_name (unsigned attr) |
c906108c | 22558 | { |
f39c6ffd TT |
22559 | const char *name; |
22560 | ||
c764a876 | 22561 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22562 | if (attr == DW_AT_MIPS_fde) |
22563 | return "DW_AT_MIPS_fde"; | |
22564 | #else | |
22565 | if (attr == DW_AT_HP_block_index) | |
22566 | return "DW_AT_HP_block_index"; | |
c764a876 | 22567 | #endif |
f39c6ffd TT |
22568 | |
22569 | name = get_DW_AT_name (attr); | |
22570 | ||
22571 | if (name == NULL) | |
fa9c3fa0 | 22572 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
22573 | |
22574 | return name; | |
c906108c SS |
22575 | } |
22576 | ||
a084a2a6 AT |
22577 | /* Convert a unit type to corresponding DW_UT name. */ |
22578 | ||
22579 | static const char * | |
22580 | dwarf_unit_type_name (int unit_type) { | |
22581 | switch (unit_type) | |
22582 | { | |
22583 | case 0x01: | |
22584 | return "DW_UT_compile (0x01)"; | |
22585 | case 0x02: | |
22586 | return "DW_UT_type (0x02)"; | |
22587 | case 0x03: | |
22588 | return "DW_UT_partial (0x03)"; | |
22589 | case 0x04: | |
22590 | return "DW_UT_skeleton (0x04)"; | |
22591 | case 0x05: | |
22592 | return "DW_UT_split_compile (0x05)"; | |
22593 | case 0x06: | |
22594 | return "DW_UT_split_type (0x06)"; | |
22595 | case 0x80: | |
22596 | return "DW_UT_lo_user (0x80)"; | |
22597 | case 0xff: | |
22598 | return "DW_UT_hi_user (0xff)"; | |
22599 | default: | |
22600 | return nullptr; | |
22601 | } | |
22602 | } | |
22603 | ||
c906108c SS |
22604 | /* Convert a DWARF value form code into its string name. */ |
22605 | ||
f39c6ffd | 22606 | static const char * |
aa1ee363 | 22607 | dwarf_form_name (unsigned form) |
c906108c | 22608 | { |
f39c6ffd TT |
22609 | const char *name = get_DW_FORM_name (form); |
22610 | ||
22611 | if (name == NULL) | |
fa9c3fa0 | 22612 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
22613 | |
22614 | return name; | |
c906108c SS |
22615 | } |
22616 | ||
a121b7c1 | 22617 | static const char * |
fba45db2 | 22618 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22619 | { |
22620 | if (mybool) | |
22621 | return "TRUE"; | |
22622 | else | |
22623 | return "FALSE"; | |
22624 | } | |
22625 | ||
22626 | /* Convert a DWARF type code into its string name. */ | |
22627 | ||
f39c6ffd | 22628 | static const char * |
aa1ee363 | 22629 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22630 | { |
f39c6ffd | 22631 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22632 | |
f39c6ffd | 22633 | if (name == NULL) |
fa9c3fa0 | 22634 | return dwarf_unknown ("ATE", enc); |
c906108c | 22635 | |
f39c6ffd | 22636 | return name; |
c906108c | 22637 | } |
c906108c | 22638 | |
f9aca02d | 22639 | static void |
d97bc12b | 22640 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22641 | { |
22642 | unsigned int i; | |
22643 | ||
d97bc12b | 22644 | print_spaces (indent, f); |
9d8780f0 | 22645 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22646 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22647 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22648 | |
22649 | if (die->parent != NULL) | |
22650 | { | |
22651 | print_spaces (indent, f); | |
9d8780f0 SM |
22652 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22653 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22654 | } |
22655 | ||
22656 | print_spaces (indent, f); | |
22657 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22658 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22659 | |
d97bc12b DE |
22660 | print_spaces (indent, f); |
22661 | fprintf_unfiltered (f, " attributes:\n"); | |
22662 | ||
c906108c SS |
22663 | for (i = 0; i < die->num_attrs; ++i) |
22664 | { | |
d97bc12b DE |
22665 | print_spaces (indent, f); |
22666 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22667 | dwarf_attr_name (die->attrs[i].name), |
22668 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22669 | |
c906108c SS |
22670 | switch (die->attrs[i].form) |
22671 | { | |
c906108c | 22672 | case DW_FORM_addr: |
336d760d | 22673 | case DW_FORM_addrx: |
3019eac3 | 22674 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22675 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22676 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22677 | break; |
22678 | case DW_FORM_block2: | |
22679 | case DW_FORM_block4: | |
22680 | case DW_FORM_block: | |
22681 | case DW_FORM_block1: | |
56eb65bd SP |
22682 | fprintf_unfiltered (f, "block: size %s", |
22683 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22684 | break; |
2dc7f7b3 | 22685 | case DW_FORM_exprloc: |
56eb65bd SP |
22686 | fprintf_unfiltered (f, "expression: size %s", |
22687 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22688 | break; |
0224619f JK |
22689 | case DW_FORM_data16: |
22690 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22691 | break; | |
4568ecf9 DE |
22692 | case DW_FORM_ref_addr: |
22693 | fprintf_unfiltered (f, "ref address: "); | |
22694 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22695 | break; | |
36586728 TT |
22696 | case DW_FORM_GNU_ref_alt: |
22697 | fprintf_unfiltered (f, "alt ref address: "); | |
22698 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22699 | break; | |
10b3939b DJ |
22700 | case DW_FORM_ref1: |
22701 | case DW_FORM_ref2: | |
22702 | case DW_FORM_ref4: | |
4568ecf9 DE |
22703 | case DW_FORM_ref8: |
22704 | case DW_FORM_ref_udata: | |
d97bc12b | 22705 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22706 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22707 | break; |
c906108c SS |
22708 | case DW_FORM_data1: |
22709 | case DW_FORM_data2: | |
22710 | case DW_FORM_data4: | |
ce5d95e1 | 22711 | case DW_FORM_data8: |
c906108c SS |
22712 | case DW_FORM_udata: |
22713 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22714 | fprintf_unfiltered (f, "constant: %s", |
22715 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22716 | break; |
2dc7f7b3 TT |
22717 | case DW_FORM_sec_offset: |
22718 | fprintf_unfiltered (f, "section offset: %s", | |
22719 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22720 | break; | |
55f1336d | 22721 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22722 | fprintf_unfiltered (f, "signature: %s", |
22723 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22724 | break; |
c906108c | 22725 | case DW_FORM_string: |
4bdf3d34 | 22726 | case DW_FORM_strp: |
43988095 | 22727 | case DW_FORM_line_strp: |
cf532bd1 | 22728 | case DW_FORM_strx: |
3019eac3 | 22729 | case DW_FORM_GNU_str_index: |
36586728 | 22730 | case DW_FORM_GNU_strp_alt: |
8285870a | 22731 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22732 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22733 | ? DW_STRING (&die->attrs[i]) : "", |
22734 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22735 | break; |
22736 | case DW_FORM_flag: | |
22737 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22738 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22739 | else |
d97bc12b | 22740 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22741 | break; |
2dc7f7b3 TT |
22742 | case DW_FORM_flag_present: |
22743 | fprintf_unfiltered (f, "flag: TRUE"); | |
22744 | break; | |
a8329558 | 22745 | case DW_FORM_indirect: |
0963b4bd MS |
22746 | /* The reader will have reduced the indirect form to |
22747 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22748 | fprintf_unfiltered (f, |
3e43a32a | 22749 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22750 | break; |
663c44ac JK |
22751 | case DW_FORM_implicit_const: |
22752 | fprintf_unfiltered (f, "constant: %s", | |
22753 | plongest (DW_SND (&die->attrs[i]))); | |
22754 | break; | |
c906108c | 22755 | default: |
d97bc12b | 22756 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22757 | die->attrs[i].form); |
d97bc12b | 22758 | break; |
c906108c | 22759 | } |
d97bc12b | 22760 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22761 | } |
22762 | } | |
22763 | ||
f9aca02d | 22764 | static void |
d97bc12b | 22765 | dump_die_for_error (struct die_info *die) |
c906108c | 22766 | { |
d97bc12b DE |
22767 | dump_die_shallow (gdb_stderr, 0, die); |
22768 | } | |
22769 | ||
22770 | static void | |
22771 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22772 | { | |
22773 | int indent = level * 4; | |
22774 | ||
22775 | gdb_assert (die != NULL); | |
22776 | ||
22777 | if (level >= max_level) | |
22778 | return; | |
22779 | ||
22780 | dump_die_shallow (f, indent, die); | |
22781 | ||
22782 | if (die->child != NULL) | |
c906108c | 22783 | { |
d97bc12b DE |
22784 | print_spaces (indent, f); |
22785 | fprintf_unfiltered (f, " Children:"); | |
22786 | if (level + 1 < max_level) | |
22787 | { | |
22788 | fprintf_unfiltered (f, "\n"); | |
22789 | dump_die_1 (f, level + 1, max_level, die->child); | |
22790 | } | |
22791 | else | |
22792 | { | |
3e43a32a MS |
22793 | fprintf_unfiltered (f, |
22794 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22795 | } |
22796 | } | |
22797 | ||
22798 | if (die->sibling != NULL && level > 0) | |
22799 | { | |
22800 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22801 | } |
22802 | } | |
22803 | ||
d97bc12b DE |
22804 | /* This is called from the pdie macro in gdbinit.in. |
22805 | It's not static so gcc will keep a copy callable from gdb. */ | |
22806 | ||
22807 | void | |
22808 | dump_die (struct die_info *die, int max_level) | |
22809 | { | |
22810 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22811 | } | |
22812 | ||
f9aca02d | 22813 | static void |
51545339 | 22814 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22815 | { |
51545339 | 22816 | void **slot; |
c906108c | 22817 | |
9c541725 PA |
22818 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22819 | to_underlying (die->sect_off), | |
b64f50a1 | 22820 | INSERT); |
51545339 DJ |
22821 | |
22822 | *slot = die; | |
c906108c SS |
22823 | } |
22824 | ||
b64f50a1 JK |
22825 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22826 | required kind. */ | |
22827 | ||
22828 | static sect_offset | |
ff39bb5e | 22829 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22830 | { |
cd6c91b4 | 22831 | if (attr->form_is_ref ()) |
9c541725 | 22832 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22833 | |
b98664d3 | 22834 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22835 | dwarf_form_name (attr->form)); |
9c541725 | 22836 | return {}; |
c906108c SS |
22837 | } |
22838 | ||
43bbcdc2 PH |
22839 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22840 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22841 | |
43bbcdc2 | 22842 | static LONGEST |
ff39bb5e | 22843 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22844 | { |
663c44ac | 22845 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22846 | return DW_SND (attr); |
22847 | else if (attr->form == DW_FORM_udata | |
22848 | || attr->form == DW_FORM_data1 | |
22849 | || attr->form == DW_FORM_data2 | |
22850 | || attr->form == DW_FORM_data4 | |
22851 | || attr->form == DW_FORM_data8) | |
22852 | return DW_UNSND (attr); | |
22853 | else | |
22854 | { | |
cd6c91b4 | 22855 | /* For DW_FORM_data16 see attribute::form_is_constant. */ |
b98664d3 | 22856 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22857 | dwarf_form_name (attr->form)); |
22858 | return default_value; | |
22859 | } | |
22860 | } | |
22861 | ||
348e048f DE |
22862 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22863 | On entry *REF_CU is the CU of SRC_DIE. | |
22864 | On exit *REF_CU is the CU of the result. */ | |
22865 | ||
22866 | static struct die_info * | |
ff39bb5e | 22867 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22868 | struct dwarf2_cu **ref_cu) |
22869 | { | |
22870 | struct die_info *die; | |
22871 | ||
cd6c91b4 | 22872 | if (attr->form_is_ref ()) |
348e048f | 22873 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22874 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22875 | die = follow_die_sig (src_die, attr, ref_cu); |
22876 | else | |
22877 | { | |
22878 | dump_die_for_error (src_die); | |
22879 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22880 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22881 | } |
22882 | ||
22883 | return die; | |
03dd20cc DJ |
22884 | } |
22885 | ||
5c631832 | 22886 | /* Follow reference OFFSET. |
673bfd45 DE |
22887 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22888 | On exit *REF_CU is the CU of the result. | |
22889 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22890 | |
f9aca02d | 22891 | static struct die_info * |
9c541725 | 22892 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22893 | struct dwarf2_cu **ref_cu) |
c906108c | 22894 | { |
10b3939b | 22895 | struct die_info temp_die; |
f2f0e013 | 22896 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22897 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22898 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22899 | |
348e048f DE |
22900 | gdb_assert (cu->per_cu != NULL); |
22901 | ||
98bfdba5 PA |
22902 | target_cu = cu; |
22903 | ||
3019eac3 | 22904 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22905 | { |
22906 | /* .debug_types CUs cannot reference anything outside their CU. | |
22907 | If they need to, they have to reference a signatured type via | |
55f1336d | 22908 | DW_FORM_ref_sig8. */ |
9c541725 | 22909 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22910 | return NULL; |
348e048f | 22911 | } |
36586728 | 22912 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22913 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22914 | { |
22915 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22916 | |
9c541725 | 22917 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22918 | dwarf2_per_objfile); |
03dd20cc DJ |
22919 | |
22920 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22921 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22922 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22923 | |
10b3939b DJ |
22924 | target_cu = per_cu->cu; |
22925 | } | |
98bfdba5 PA |
22926 | else if (cu->dies == NULL) |
22927 | { | |
22928 | /* We're loading full DIEs during partial symbol reading. */ | |
22929 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 22930 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22931 | } |
c906108c | 22932 | |
f2f0e013 | 22933 | *ref_cu = target_cu; |
9c541725 | 22934 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22935 | |
22936 | if (target_cu != cu) | |
22937 | target_cu->ancestor = cu; | |
22938 | ||
9a3c8263 | 22939 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22940 | &temp_die, |
22941 | to_underlying (sect_off)); | |
5c631832 | 22942 | } |
10b3939b | 22943 | |
5c631832 JK |
22944 | /* Follow reference attribute ATTR of SRC_DIE. |
22945 | On entry *REF_CU is the CU of SRC_DIE. | |
22946 | On exit *REF_CU is the CU of the result. */ | |
22947 | ||
22948 | static struct die_info * | |
ff39bb5e | 22949 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22950 | struct dwarf2_cu **ref_cu) |
22951 | { | |
9c541725 | 22952 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22953 | struct dwarf2_cu *cu = *ref_cu; |
22954 | struct die_info *die; | |
22955 | ||
9c541725 | 22956 | die = follow_die_offset (sect_off, |
36586728 TT |
22957 | (attr->form == DW_FORM_GNU_ref_alt |
22958 | || cu->per_cu->is_dwz), | |
22959 | ref_cu); | |
5c631832 | 22960 | if (!die) |
9d8780f0 SM |
22961 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22962 | "at %s [in module %s]"), | |
22963 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 22964 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22965 | |
5c631832 JK |
22966 | return die; |
22967 | } | |
22968 | ||
9c541725 | 22969 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 22970 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
22971 | dwarf2_locexpr_baton->data has lifetime of |
22972 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
22973 | |
22974 | struct dwarf2_locexpr_baton | |
9c541725 | 22975 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
22976 | struct dwarf2_per_cu_data *per_cu, |
22977 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 22978 | void *baton, bool resolve_abstract_p) |
5c631832 | 22979 | { |
918dd910 | 22980 | struct dwarf2_cu *cu; |
5c631832 JK |
22981 | struct die_info *die; |
22982 | struct attribute *attr; | |
22983 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22984 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22985 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22986 | |
918dd910 | 22987 | if (per_cu->cu == NULL) |
58f0c718 | 22988 | load_cu (per_cu, false); |
918dd910 | 22989 | cu = per_cu->cu; |
cc12ce38 DE |
22990 | if (cu == NULL) |
22991 | { | |
22992 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22993 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22994 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22995 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22996 | } |
918dd910 | 22997 | |
9c541725 | 22998 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22999 | if (!die) |
9d8780f0 SM |
23000 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23001 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23002 | |
23003 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23004 | if (!attr && resolve_abstract_p |
3360b6e7 | 23005 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
23006 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
23007 | { | |
23008 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 23009 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 23010 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 23011 | |
3360b6e7 TV |
23012 | for (const auto &cand_off |
23013 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 23014 | { |
3360b6e7 TV |
23015 | struct dwarf2_cu *cand_cu = cu; |
23016 | struct die_info *cand | |
23017 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23018 | if (!cand | |
23019 | || !cand->parent | |
e4a62c65 TV |
23020 | || cand->parent->tag != DW_TAG_subprogram) |
23021 | continue; | |
23022 | ||
23023 | CORE_ADDR pc_low, pc_high; | |
23024 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23025 | if (pc_low == ((CORE_ADDR) -1)) |
23026 | continue; | |
23027 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23028 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23029 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23030 | continue; |
23031 | ||
23032 | die = cand; | |
23033 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23034 | break; | |
23035 | } | |
23036 | } | |
23037 | ||
5c631832 JK |
23038 | if (!attr) |
23039 | { | |
e103e986 JK |
23040 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23041 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23042 | |
e103e986 | 23043 | retval.data = NULL; |
5c631832 JK |
23044 | retval.size = 0; |
23045 | } | |
cd6c91b4 | 23046 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23047 | { |
23048 | struct dwarf2_loclist_baton loclist_baton; | |
23049 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23050 | size_t size; | |
23051 | ||
23052 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23053 | ||
23054 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23055 | &size, pc); | |
23056 | retval.size = size; | |
23057 | } | |
5c631832 JK |
23058 | else |
23059 | { | |
4fc6c0d5 | 23060 | if (!attr->form_is_block ()) |
9d8780f0 | 23061 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23062 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23063 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23064 | |
23065 | retval.data = DW_BLOCK (attr)->data; | |
23066 | retval.size = DW_BLOCK (attr)->size; | |
23067 | } | |
23068 | retval.per_cu = cu->per_cu; | |
918dd910 | 23069 | |
ed2dc618 | 23070 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23071 | |
5c631832 | 23072 | return retval; |
348e048f DE |
23073 | } |
23074 | ||
8b9737bf TT |
23075 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23076 | offset. */ | |
23077 | ||
23078 | struct dwarf2_locexpr_baton | |
23079 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23080 | struct dwarf2_per_cu_data *per_cu, | |
23081 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23082 | void *baton) | |
23083 | { | |
9c541725 | 23084 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23085 | |
9c541725 | 23086 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23087 | } |
23088 | ||
b6807d98 TT |
23089 | /* Write a constant of a given type as target-ordered bytes into |
23090 | OBSTACK. */ | |
23091 | ||
23092 | static const gdb_byte * | |
23093 | write_constant_as_bytes (struct obstack *obstack, | |
23094 | enum bfd_endian byte_order, | |
23095 | struct type *type, | |
23096 | ULONGEST value, | |
23097 | LONGEST *len) | |
23098 | { | |
23099 | gdb_byte *result; | |
23100 | ||
23101 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23102 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23103 | store_unsigned_integer (result, *len, byte_order, value); |
23104 | ||
23105 | return result; | |
23106 | } | |
23107 | ||
23108 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23109 | pointer to the constant bytes and set LEN to the length of the | |
23110 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23111 | does not have a DW_AT_const_value, return NULL. */ | |
23112 | ||
23113 | const gdb_byte * | |
9c541725 | 23114 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23115 | struct dwarf2_per_cu_data *per_cu, |
23116 | struct obstack *obstack, | |
23117 | LONGEST *len) | |
23118 | { | |
23119 | struct dwarf2_cu *cu; | |
23120 | struct die_info *die; | |
23121 | struct attribute *attr; | |
23122 | const gdb_byte *result = NULL; | |
23123 | struct type *type; | |
23124 | LONGEST value; | |
23125 | enum bfd_endian byte_order; | |
e3b94546 | 23126 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23127 | |
b6807d98 | 23128 | if (per_cu->cu == NULL) |
58f0c718 | 23129 | load_cu (per_cu, false); |
b6807d98 | 23130 | cu = per_cu->cu; |
cc12ce38 DE |
23131 | if (cu == NULL) |
23132 | { | |
23133 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23134 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23135 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23136 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23137 | } |
b6807d98 | 23138 | |
9c541725 | 23139 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23140 | if (!die) |
9d8780f0 SM |
23141 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23142 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23143 | |
23144 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23145 | if (attr == NULL) | |
23146 | return NULL; | |
23147 | ||
e3b94546 | 23148 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23149 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23150 | ||
23151 | switch (attr->form) | |
23152 | { | |
23153 | case DW_FORM_addr: | |
336d760d | 23154 | case DW_FORM_addrx: |
b6807d98 TT |
23155 | case DW_FORM_GNU_addr_index: |
23156 | { | |
23157 | gdb_byte *tem; | |
23158 | ||
23159 | *len = cu->header.addr_size; | |
224c3ddb | 23160 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23161 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23162 | result = tem; | |
23163 | } | |
23164 | break; | |
23165 | case DW_FORM_string: | |
23166 | case DW_FORM_strp: | |
cf532bd1 | 23167 | case DW_FORM_strx: |
b6807d98 TT |
23168 | case DW_FORM_GNU_str_index: |
23169 | case DW_FORM_GNU_strp_alt: | |
23170 | /* DW_STRING is already allocated on the objfile obstack, point | |
23171 | directly to it. */ | |
23172 | result = (const gdb_byte *) DW_STRING (attr); | |
23173 | *len = strlen (DW_STRING (attr)); | |
23174 | break; | |
23175 | case DW_FORM_block1: | |
23176 | case DW_FORM_block2: | |
23177 | case DW_FORM_block4: | |
23178 | case DW_FORM_block: | |
23179 | case DW_FORM_exprloc: | |
0224619f | 23180 | case DW_FORM_data16: |
b6807d98 TT |
23181 | result = DW_BLOCK (attr)->data; |
23182 | *len = DW_BLOCK (attr)->size; | |
23183 | break; | |
23184 | ||
23185 | /* The DW_AT_const_value attributes are supposed to carry the | |
23186 | symbol's value "represented as it would be on the target | |
23187 | architecture." By the time we get here, it's already been | |
23188 | converted to host endianness, so we just need to sign- or | |
23189 | zero-extend it as appropriate. */ | |
23190 | case DW_FORM_data1: | |
23191 | type = die_type (die, cu); | |
23192 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23193 | if (result == NULL) | |
23194 | result = write_constant_as_bytes (obstack, byte_order, | |
23195 | type, value, len); | |
23196 | break; | |
23197 | case DW_FORM_data2: | |
23198 | type = die_type (die, cu); | |
23199 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23200 | if (result == NULL) | |
23201 | result = write_constant_as_bytes (obstack, byte_order, | |
23202 | type, value, len); | |
23203 | break; | |
23204 | case DW_FORM_data4: | |
23205 | type = die_type (die, cu); | |
23206 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23207 | if (result == NULL) | |
23208 | result = write_constant_as_bytes (obstack, byte_order, | |
23209 | type, value, len); | |
23210 | break; | |
23211 | case DW_FORM_data8: | |
23212 | type = die_type (die, cu); | |
23213 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23214 | if (result == NULL) | |
23215 | result = write_constant_as_bytes (obstack, byte_order, | |
23216 | type, value, len); | |
23217 | break; | |
23218 | ||
23219 | case DW_FORM_sdata: | |
663c44ac | 23220 | case DW_FORM_implicit_const: |
b6807d98 TT |
23221 | type = die_type (die, cu); |
23222 | result = write_constant_as_bytes (obstack, byte_order, | |
23223 | type, DW_SND (attr), len); | |
23224 | break; | |
23225 | ||
23226 | case DW_FORM_udata: | |
23227 | type = die_type (die, cu); | |
23228 | result = write_constant_as_bytes (obstack, byte_order, | |
23229 | type, DW_UNSND (attr), len); | |
23230 | break; | |
23231 | ||
23232 | default: | |
b98664d3 | 23233 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23234 | dwarf_form_name (attr->form)); |
23235 | break; | |
23236 | } | |
23237 | ||
23238 | return result; | |
23239 | } | |
23240 | ||
7942e96e AA |
23241 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23242 | valid type for this die is found. */ | |
23243 | ||
23244 | struct type * | |
9c541725 | 23245 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23246 | struct dwarf2_per_cu_data *per_cu) |
23247 | { | |
23248 | struct dwarf2_cu *cu; | |
23249 | struct die_info *die; | |
23250 | ||
7942e96e | 23251 | if (per_cu->cu == NULL) |
58f0c718 | 23252 | load_cu (per_cu, false); |
7942e96e AA |
23253 | cu = per_cu->cu; |
23254 | if (!cu) | |
23255 | return NULL; | |
23256 | ||
9c541725 | 23257 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23258 | if (!die) |
23259 | return NULL; | |
23260 | ||
23261 | return die_type (die, cu); | |
23262 | } | |
23263 | ||
8a9b8146 TT |
23264 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23265 | PER_CU. */ | |
23266 | ||
23267 | struct type * | |
b64f50a1 | 23268 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23269 | struct dwarf2_per_cu_data *per_cu) |
23270 | { | |
9c541725 | 23271 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23272 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23273 | } |
23274 | ||
ac9ec31b | 23275 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23276 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23277 | On exit *REF_CU is the CU of the result. |
23278 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23279 | |
23280 | static struct die_info * | |
ac9ec31b DE |
23281 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23282 | struct dwarf2_cu **ref_cu) | |
348e048f | 23283 | { |
348e048f | 23284 | struct die_info temp_die; |
c24bdb02 | 23285 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
23286 | struct die_info *die; |
23287 | ||
ac9ec31b DE |
23288 | /* While it might be nice to assert sig_type->type == NULL here, |
23289 | we can get here for DW_AT_imported_declaration where we need | |
23290 | the DIE not the type. */ | |
348e048f DE |
23291 | |
23292 | /* If necessary, add it to the queue and load its DIEs. */ | |
23293 | ||
95554aad | 23294 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23295 | read_signatured_type (sig_type); |
348e048f | 23296 | |
348e048f | 23297 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23298 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23299 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23300 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23301 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23302 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23303 | if (die) |
23304 | { | |
ed2dc618 | 23305 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23306 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23307 | |
796a7ff8 DE |
23308 | /* For .gdb_index version 7 keep track of included TUs. |
23309 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23310 | if (dwarf2_per_objfile->index_table != NULL | |
23311 | && dwarf2_per_objfile->index_table->version <= 7) | |
23312 | { | |
ae640021 | 23313 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23314 | } |
23315 | ||
348e048f | 23316 | *ref_cu = sig_cu; |
c24bdb02 KS |
23317 | if (sig_cu != cu) |
23318 | sig_cu->ancestor = cu; | |
23319 | ||
348e048f DE |
23320 | return die; |
23321 | } | |
23322 | ||
ac9ec31b DE |
23323 | return NULL; |
23324 | } | |
23325 | ||
23326 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23327 | On entry *REF_CU is the CU of SRC_DIE. | |
23328 | On exit *REF_CU is the CU of the result. | |
23329 | The result is the DIE of the type. | |
23330 | If the referenced type cannot be found an error is thrown. */ | |
23331 | ||
23332 | static struct die_info * | |
ff39bb5e | 23333 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23334 | struct dwarf2_cu **ref_cu) |
23335 | { | |
23336 | ULONGEST signature = DW_SIGNATURE (attr); | |
23337 | struct signatured_type *sig_type; | |
23338 | struct die_info *die; | |
23339 | ||
23340 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23341 | ||
a2ce51a0 | 23342 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23343 | /* sig_type will be NULL if the signatured type is missing from |
23344 | the debug info. */ | |
23345 | if (sig_type == NULL) | |
23346 | { | |
23347 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23348 | " from DIE at %s [in module %s]"), |
23349 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23350 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23351 | } |
23352 | ||
23353 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23354 | if (die == NULL) | |
23355 | { | |
23356 | dump_die_for_error (src_die); | |
23357 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23358 | " from DIE at %s [in module %s]"), |
23359 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23360 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23361 | } |
23362 | ||
23363 | return die; | |
23364 | } | |
23365 | ||
23366 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23367 | reading in and processing the type unit if necessary. */ | |
23368 | ||
23369 | static struct type * | |
23370 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23371 | struct dwarf2_cu *cu) | |
23372 | { | |
518817b3 SM |
23373 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23374 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23375 | struct signatured_type *sig_type; |
23376 | struct dwarf2_cu *type_cu; | |
23377 | struct die_info *type_die; | |
23378 | struct type *type; | |
23379 | ||
a2ce51a0 | 23380 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23381 | /* sig_type will be NULL if the signatured type is missing from |
23382 | the debug info. */ | |
23383 | if (sig_type == NULL) | |
23384 | { | |
b98664d3 | 23385 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23386 | " from DIE at %s [in module %s]"), |
23387 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23388 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23389 | return build_error_marker_type (cu, die); |
23390 | } | |
23391 | ||
23392 | /* If we already know the type we're done. */ | |
23393 | if (sig_type->type != NULL) | |
23394 | return sig_type->type; | |
23395 | ||
23396 | type_cu = cu; | |
23397 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23398 | if (type_die != NULL) | |
23399 | { | |
23400 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23401 | is created. This is important, for example, because for c++ classes | |
23402 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23403 | type = read_type_die (type_die, type_cu); | |
23404 | if (type == NULL) | |
23405 | { | |
b98664d3 | 23406 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23407 | " referenced from DIE at %s [in module %s]"), |
23408 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23409 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23410 | type = build_error_marker_type (cu, die); |
23411 | } | |
23412 | } | |
23413 | else | |
23414 | { | |
b98664d3 | 23415 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23416 | " from DIE at %s [in module %s]"), |
23417 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23418 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23419 | type = build_error_marker_type (cu, die); |
23420 | } | |
23421 | sig_type->type = type; | |
23422 | ||
23423 | return type; | |
23424 | } | |
23425 | ||
23426 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23427 | reading in and processing the type unit if necessary. */ | |
23428 | ||
23429 | static struct type * | |
ff39bb5e | 23430 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23431 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23432 | { |
23433 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23434 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23435 | { |
23436 | struct dwarf2_cu *type_cu = cu; | |
23437 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23438 | ||
23439 | return read_type_die (type_die, type_cu); | |
23440 | } | |
23441 | else if (attr->form == DW_FORM_ref_sig8) | |
23442 | { | |
23443 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23444 | } | |
23445 | else | |
23446 | { | |
518817b3 SM |
23447 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23448 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23449 | |
b98664d3 | 23450 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23451 | " at %s [in module %s]"), |
23452 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23453 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23454 | return build_error_marker_type (cu, die); |
23455 | } | |
348e048f DE |
23456 | } |
23457 | ||
e5fe5e75 | 23458 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23459 | |
23460 | static void | |
e5fe5e75 | 23461 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23462 | { |
52dc124a | 23463 | struct signatured_type *sig_type; |
348e048f | 23464 | |
f4dc4d17 DE |
23465 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23466 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23467 | ||
6721b2ec DE |
23468 | /* We have the per_cu, but we need the signatured_type. |
23469 | Fortunately this is an easy translation. */ | |
23470 | gdb_assert (per_cu->is_debug_types); | |
23471 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23472 | |
6721b2ec | 23473 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23474 | |
52dc124a | 23475 | read_signatured_type (sig_type); |
348e048f | 23476 | |
6721b2ec | 23477 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23478 | } |
23479 | ||
3019eac3 DE |
23480 | /* Read in a signatured type and build its CU and DIEs. |
23481 | If the type is a stub for the real type in a DWO file, | |
23482 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23483 | |
23484 | static void | |
23485 | read_signatured_type (struct signatured_type *sig_type) | |
23486 | { | |
23487 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23488 | |
3019eac3 | 23489 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23490 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23491 | |
c0ab21c2 TT |
23492 | cutu_reader reader (per_cu, NULL, 0, 1, false); |
23493 | ||
23494 | if (!reader.dummy_p) | |
23495 | { | |
23496 | struct dwarf2_cu *cu = reader.cu; | |
23497 | const gdb_byte *info_ptr = reader.info_ptr; | |
23498 | ||
23499 | gdb_assert (cu->die_hash == NULL); | |
23500 | cu->die_hash = | |
23501 | htab_create_alloc_ex (cu->header.length / 12, | |
23502 | die_hash, | |
23503 | die_eq, | |
23504 | NULL, | |
23505 | &cu->comp_unit_obstack, | |
23506 | hashtab_obstack_allocate, | |
23507 | dummy_obstack_deallocate); | |
23508 | ||
23509 | if (reader.has_children) | |
23510 | reader.comp_unit_die->child | |
23511 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23512 | reader.comp_unit_die); | |
23513 | cu->dies = reader.comp_unit_die; | |
23514 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23515 | ||
23516 | /* We try not to read any attributes in this function, because | |
23517 | not all CUs needed for references have been loaded yet, and | |
23518 | symbol table processing isn't initialized. But we have to | |
23519 | set the CU language, or we won't be able to build types | |
23520 | correctly. Similarly, if we do not read the producer, we can | |
23521 | not apply producer-specific interpretation. */ | |
23522 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
23523 | } | |
23524 | ||
7ee85ab1 | 23525 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23526 | } |
23527 | ||
c906108c SS |
23528 | /* Decode simple location descriptions. |
23529 | Given a pointer to a dwarf block that defines a location, compute | |
23530 | the location and return the value. | |
23531 | ||
4cecd739 DJ |
23532 | NOTE drow/2003-11-18: This function is called in two situations |
23533 | now: for the address of static or global variables (partial symbols | |
23534 | only) and for offsets into structures which are expected to be | |
23535 | (more or less) constant. The partial symbol case should go away, | |
23536 | and only the constant case should remain. That will let this | |
23537 | function complain more accurately. A few special modes are allowed | |
23538 | without complaint for global variables (for instance, global | |
23539 | register values and thread-local values). | |
c906108c SS |
23540 | |
23541 | A location description containing no operations indicates that the | |
4cecd739 | 23542 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23543 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23544 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23545 | complaint. |
23546 | ||
23547 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23548 | |
23549 | static CORE_ADDR | |
e7c27a73 | 23550 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23551 | { |
518817b3 | 23552 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23553 | size_t i; |
23554 | size_t size = blk->size; | |
d521ce57 | 23555 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23556 | CORE_ADDR stack[64]; |
23557 | int stacki; | |
23558 | unsigned int bytes_read, unsnd; | |
23559 | gdb_byte op; | |
c906108c | 23560 | |
21ae7a4d JK |
23561 | i = 0; |
23562 | stacki = 0; | |
23563 | stack[stacki] = 0; | |
23564 | stack[++stacki] = 0; | |
23565 | ||
23566 | while (i < size) | |
23567 | { | |
23568 | op = data[i++]; | |
23569 | switch (op) | |
23570 | { | |
23571 | case DW_OP_lit0: | |
23572 | case DW_OP_lit1: | |
23573 | case DW_OP_lit2: | |
23574 | case DW_OP_lit3: | |
23575 | case DW_OP_lit4: | |
23576 | case DW_OP_lit5: | |
23577 | case DW_OP_lit6: | |
23578 | case DW_OP_lit7: | |
23579 | case DW_OP_lit8: | |
23580 | case DW_OP_lit9: | |
23581 | case DW_OP_lit10: | |
23582 | case DW_OP_lit11: | |
23583 | case DW_OP_lit12: | |
23584 | case DW_OP_lit13: | |
23585 | case DW_OP_lit14: | |
23586 | case DW_OP_lit15: | |
23587 | case DW_OP_lit16: | |
23588 | case DW_OP_lit17: | |
23589 | case DW_OP_lit18: | |
23590 | case DW_OP_lit19: | |
23591 | case DW_OP_lit20: | |
23592 | case DW_OP_lit21: | |
23593 | case DW_OP_lit22: | |
23594 | case DW_OP_lit23: | |
23595 | case DW_OP_lit24: | |
23596 | case DW_OP_lit25: | |
23597 | case DW_OP_lit26: | |
23598 | case DW_OP_lit27: | |
23599 | case DW_OP_lit28: | |
23600 | case DW_OP_lit29: | |
23601 | case DW_OP_lit30: | |
23602 | case DW_OP_lit31: | |
23603 | stack[++stacki] = op - DW_OP_lit0; | |
23604 | break; | |
f1bea926 | 23605 | |
21ae7a4d JK |
23606 | case DW_OP_reg0: |
23607 | case DW_OP_reg1: | |
23608 | case DW_OP_reg2: | |
23609 | case DW_OP_reg3: | |
23610 | case DW_OP_reg4: | |
23611 | case DW_OP_reg5: | |
23612 | case DW_OP_reg6: | |
23613 | case DW_OP_reg7: | |
23614 | case DW_OP_reg8: | |
23615 | case DW_OP_reg9: | |
23616 | case DW_OP_reg10: | |
23617 | case DW_OP_reg11: | |
23618 | case DW_OP_reg12: | |
23619 | case DW_OP_reg13: | |
23620 | case DW_OP_reg14: | |
23621 | case DW_OP_reg15: | |
23622 | case DW_OP_reg16: | |
23623 | case DW_OP_reg17: | |
23624 | case DW_OP_reg18: | |
23625 | case DW_OP_reg19: | |
23626 | case DW_OP_reg20: | |
23627 | case DW_OP_reg21: | |
23628 | case DW_OP_reg22: | |
23629 | case DW_OP_reg23: | |
23630 | case DW_OP_reg24: | |
23631 | case DW_OP_reg25: | |
23632 | case DW_OP_reg26: | |
23633 | case DW_OP_reg27: | |
23634 | case DW_OP_reg28: | |
23635 | case DW_OP_reg29: | |
23636 | case DW_OP_reg30: | |
23637 | case DW_OP_reg31: | |
23638 | stack[++stacki] = op - DW_OP_reg0; | |
23639 | if (i < size) | |
23640 | dwarf2_complex_location_expr_complaint (); | |
23641 | break; | |
c906108c | 23642 | |
21ae7a4d JK |
23643 | case DW_OP_regx: |
23644 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23645 | i += bytes_read; | |
23646 | stack[++stacki] = unsnd; | |
23647 | if (i < size) | |
23648 | dwarf2_complex_location_expr_complaint (); | |
23649 | break; | |
c906108c | 23650 | |
21ae7a4d JK |
23651 | case DW_OP_addr: |
23652 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23653 | cu, &bytes_read); | |
23654 | i += bytes_read; | |
23655 | break; | |
d53d4ac5 | 23656 | |
21ae7a4d JK |
23657 | case DW_OP_const1u: |
23658 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23659 | i += 1; | |
23660 | break; | |
23661 | ||
23662 | case DW_OP_const1s: | |
23663 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23664 | i += 1; | |
23665 | break; | |
23666 | ||
23667 | case DW_OP_const2u: | |
23668 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23669 | i += 2; | |
23670 | break; | |
23671 | ||
23672 | case DW_OP_const2s: | |
23673 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23674 | i += 2; | |
23675 | break; | |
d53d4ac5 | 23676 | |
21ae7a4d JK |
23677 | case DW_OP_const4u: |
23678 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23679 | i += 4; | |
23680 | break; | |
23681 | ||
23682 | case DW_OP_const4s: | |
23683 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23684 | i += 4; | |
23685 | break; | |
23686 | ||
585861ea JK |
23687 | case DW_OP_const8u: |
23688 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23689 | i += 8; | |
23690 | break; | |
23691 | ||
21ae7a4d JK |
23692 | case DW_OP_constu: |
23693 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23694 | &bytes_read); | |
23695 | i += bytes_read; | |
23696 | break; | |
23697 | ||
23698 | case DW_OP_consts: | |
23699 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23700 | i += bytes_read; | |
23701 | break; | |
23702 | ||
23703 | case DW_OP_dup: | |
23704 | stack[stacki + 1] = stack[stacki]; | |
23705 | stacki++; | |
23706 | break; | |
23707 | ||
23708 | case DW_OP_plus: | |
23709 | stack[stacki - 1] += stack[stacki]; | |
23710 | stacki--; | |
23711 | break; | |
23712 | ||
23713 | case DW_OP_plus_uconst: | |
23714 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23715 | &bytes_read); | |
23716 | i += bytes_read; | |
23717 | break; | |
23718 | ||
23719 | case DW_OP_minus: | |
23720 | stack[stacki - 1] -= stack[stacki]; | |
23721 | stacki--; | |
23722 | break; | |
23723 | ||
23724 | case DW_OP_deref: | |
23725 | /* If we're not the last op, then we definitely can't encode | |
23726 | this using GDB's address_class enum. This is valid for partial | |
23727 | global symbols, although the variable's address will be bogus | |
23728 | in the psymtab. */ | |
23729 | if (i < size) | |
23730 | dwarf2_complex_location_expr_complaint (); | |
23731 | break; | |
23732 | ||
23733 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23734 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23735 | /* The top of the stack has the offset from the beginning |
23736 | of the thread control block at which the variable is located. */ | |
23737 | /* Nothing should follow this operator, so the top of stack would | |
23738 | be returned. */ | |
23739 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23740 | address will be bogus in the psymtab. Make it always at least |
23741 | non-zero to not look as a variable garbage collected by linker | |
23742 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23743 | if (i < size) |
23744 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23745 | stack[stacki]++; |
21ae7a4d JK |
23746 | break; |
23747 | ||
23748 | case DW_OP_GNU_uninit: | |
23749 | break; | |
23750 | ||
336d760d | 23751 | case DW_OP_addrx: |
3019eac3 | 23752 | case DW_OP_GNU_addr_index: |
49f6c839 | 23753 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23754 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23755 | &bytes_read); | |
23756 | i += bytes_read; | |
23757 | break; | |
23758 | ||
21ae7a4d JK |
23759 | default: |
23760 | { | |
f39c6ffd | 23761 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23762 | |
23763 | if (name) | |
b98664d3 | 23764 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23765 | name); |
23766 | else | |
b98664d3 | 23767 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23768 | op); |
23769 | } | |
23770 | ||
23771 | return (stack[stacki]); | |
d53d4ac5 | 23772 | } |
3c6e0cb3 | 23773 | |
21ae7a4d JK |
23774 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23775 | outside of the allocated space. Also enforce minimum>0. */ | |
23776 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23777 | { | |
b98664d3 | 23778 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23779 | return 0; |
23780 | } | |
23781 | ||
23782 | if (stacki <= 0) | |
23783 | { | |
b98664d3 | 23784 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23785 | return 0; |
23786 | } | |
23787 | } | |
23788 | return (stack[stacki]); | |
c906108c SS |
23789 | } |
23790 | ||
23791 | /* memory allocation interface */ | |
23792 | ||
c906108c | 23793 | static struct dwarf_block * |
7b5a2f43 | 23794 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23795 | { |
8d749320 | 23796 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23797 | } |
23798 | ||
c906108c | 23799 | static struct die_info * |
b60c80d6 | 23800 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23801 | { |
23802 | struct die_info *die; | |
b60c80d6 DJ |
23803 | size_t size = sizeof (struct die_info); |
23804 | ||
23805 | if (num_attrs > 1) | |
23806 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23807 | |
b60c80d6 | 23808 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23809 | memset (die, 0, sizeof (struct die_info)); |
23810 | return (die); | |
23811 | } | |
2e276125 JB |
23812 | |
23813 | \f | |
23814 | /* Macro support. */ | |
23815 | ||
233d95b5 JK |
23816 | /* Return file name relative to the compilation directory of file number I in |
23817 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23818 | responsible for freeing it. */ |
233d95b5 | 23819 | |
2e276125 | 23820 | static char * |
233d95b5 | 23821 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23822 | { |
6a83a1e6 EZ |
23823 | /* Is the file number a valid index into the line header's file name |
23824 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 23825 | if (lh->is_valid_file_index (file)) |
6a83a1e6 | 23826 | { |
7ba99d21 | 23827 | const file_entry *fe = lh->file_name_at (file); |
6e70227d | 23828 | |
7ba99d21 | 23829 | if (!IS_ABSOLUTE_PATH (fe->name)) |
8c43009f | 23830 | { |
7ba99d21 | 23831 | const char *dir = fe->include_dir (lh); |
8c43009f | 23832 | if (dir != NULL) |
7ba99d21 | 23833 | return concat (dir, SLASH_STRING, fe->name, (char *) NULL); |
8c43009f | 23834 | } |
7ba99d21 | 23835 | return xstrdup (fe->name); |
6a83a1e6 | 23836 | } |
2e276125 JB |
23837 | else |
23838 | { | |
6a83a1e6 EZ |
23839 | /* The compiler produced a bogus file number. We can at least |
23840 | record the macro definitions made in the file, even if we | |
23841 | won't be able to find the file by name. */ | |
23842 | char fake_name[80]; | |
9a619af0 | 23843 | |
8c042590 PM |
23844 | xsnprintf (fake_name, sizeof (fake_name), |
23845 | "<bad macro file number %d>", file); | |
2e276125 | 23846 | |
b98664d3 | 23847 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 23848 | file); |
2e276125 | 23849 | |
6a83a1e6 | 23850 | return xstrdup (fake_name); |
2e276125 JB |
23851 | } |
23852 | } | |
23853 | ||
233d95b5 JK |
23854 | /* Return the full name of file number I in *LH's file name table. |
23855 | Use COMP_DIR as the name of the current directory of the | |
23856 | compilation. The result is allocated using xmalloc; the caller is | |
23857 | responsible for freeing it. */ | |
23858 | static char * | |
23859 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23860 | { | |
23861 | /* Is the file number a valid index into the line header's file name | |
23862 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 23863 | if (lh->is_valid_file_index (file)) |
233d95b5 JK |
23864 | { |
23865 | char *relative = file_file_name (file, lh); | |
23866 | ||
23867 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23868 | return relative; | |
b36cec19 PA |
23869 | return reconcat (relative, comp_dir, SLASH_STRING, |
23870 | relative, (char *) NULL); | |
233d95b5 JK |
23871 | } |
23872 | else | |
23873 | return file_file_name (file, lh); | |
23874 | } | |
23875 | ||
2e276125 JB |
23876 | |
23877 | static struct macro_source_file * | |
804d2729 TT |
23878 | macro_start_file (struct dwarf2_cu *cu, |
23879 | int file, int line, | |
2e276125 | 23880 | struct macro_source_file *current_file, |
43f3e411 | 23881 | struct line_header *lh) |
2e276125 | 23882 | { |
233d95b5 JK |
23883 | /* File name relative to the compilation directory of this source file. */ |
23884 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23885 | |
2e276125 | 23886 | if (! current_file) |
abc9d0dc | 23887 | { |
fc474241 DE |
23888 | /* Note: We don't create a macro table for this compilation unit |
23889 | at all until we actually get a filename. */ | |
c24bdb02 | 23890 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 23891 | |
abc9d0dc TT |
23892 | /* If we have no current file, then this must be the start_file |
23893 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23894 | current_file = macro_set_main (macro_table, file_name); |
23895 | macro_define_special (macro_table); | |
abc9d0dc | 23896 | } |
2e276125 | 23897 | else |
233d95b5 | 23898 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23899 | |
233d95b5 | 23900 | xfree (file_name); |
6e70227d | 23901 | |
2e276125 JB |
23902 | return current_file; |
23903 | } | |
23904 | ||
2e276125 JB |
23905 | static const char * |
23906 | consume_improper_spaces (const char *p, const char *body) | |
23907 | { | |
23908 | if (*p == ' ') | |
23909 | { | |
b98664d3 | 23910 | complaint (_("macro definition contains spaces " |
3e43a32a | 23911 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23912 | body); |
2e276125 JB |
23913 | |
23914 | while (*p == ' ') | |
23915 | p++; | |
23916 | } | |
23917 | ||
23918 | return p; | |
23919 | } | |
23920 | ||
23921 | ||
23922 | static void | |
23923 | parse_macro_definition (struct macro_source_file *file, int line, | |
23924 | const char *body) | |
23925 | { | |
23926 | const char *p; | |
23927 | ||
23928 | /* The body string takes one of two forms. For object-like macro | |
23929 | definitions, it should be: | |
23930 | ||
23931 | <macro name> " " <definition> | |
23932 | ||
23933 | For function-like macro definitions, it should be: | |
23934 | ||
23935 | <macro name> "() " <definition> | |
23936 | or | |
23937 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23938 | ||
23939 | Spaces may appear only where explicitly indicated, and in the | |
23940 | <definition>. | |
23941 | ||
23942 | The Dwarf 2 spec says that an object-like macro's name is always | |
23943 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23944 | the space when the macro's definition is the empty string. |
2e276125 JB |
23945 | |
23946 | The Dwarf 2 spec says that there should be no spaces between the | |
23947 | formal arguments in a function-like macro's formal argument list, | |
23948 | but versions of GCC around March 2002 include spaces after the | |
23949 | commas. */ | |
23950 | ||
23951 | ||
23952 | /* Find the extent of the macro name. The macro name is terminated | |
23953 | by either a space or null character (for an object-like macro) or | |
23954 | an opening paren (for a function-like macro). */ | |
23955 | for (p = body; *p; p++) | |
23956 | if (*p == ' ' || *p == '(') | |
23957 | break; | |
23958 | ||
23959 | if (*p == ' ' || *p == '\0') | |
23960 | { | |
23961 | /* It's an object-like macro. */ | |
23962 | int name_len = p - body; | |
456e800a | 23963 | std::string name (body, name_len); |
2e276125 JB |
23964 | const char *replacement; |
23965 | ||
23966 | if (*p == ' ') | |
23967 | replacement = body + name_len + 1; | |
23968 | else | |
23969 | { | |
4d3c2250 | 23970 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23971 | replacement = body + name_len; |
23972 | } | |
6e70227d | 23973 | |
456e800a | 23974 | macro_define_object (file, line, name.c_str (), replacement); |
2e276125 JB |
23975 | } |
23976 | else if (*p == '(') | |
23977 | { | |
23978 | /* It's a function-like macro. */ | |
456e800a | 23979 | std::string name (body, p - body); |
2e276125 JB |
23980 | int argc = 0; |
23981 | int argv_size = 1; | |
8d749320 | 23982 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23983 | |
23984 | p++; | |
23985 | ||
23986 | p = consume_improper_spaces (p, body); | |
23987 | ||
23988 | /* Parse the formal argument list. */ | |
23989 | while (*p && *p != ')') | |
23990 | { | |
23991 | /* Find the extent of the current argument name. */ | |
23992 | const char *arg_start = p; | |
23993 | ||
23994 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23995 | p++; | |
23996 | ||
23997 | if (! *p || p == arg_start) | |
4d3c2250 | 23998 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23999 | else |
24000 | { | |
24001 | /* Make sure argv has room for the new argument. */ | |
24002 | if (argc >= argv_size) | |
24003 | { | |
24004 | argv_size *= 2; | |
224c3ddb | 24005 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24006 | } |
24007 | ||
3f8a7804 | 24008 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24009 | } |
24010 | ||
24011 | p = consume_improper_spaces (p, body); | |
24012 | ||
24013 | /* Consume the comma, if present. */ | |
24014 | if (*p == ',') | |
24015 | { | |
24016 | p++; | |
24017 | ||
24018 | p = consume_improper_spaces (p, body); | |
24019 | } | |
24020 | } | |
24021 | ||
24022 | if (*p == ')') | |
24023 | { | |
24024 | p++; | |
24025 | ||
24026 | if (*p == ' ') | |
24027 | /* Perfectly formed definition, no complaints. */ | |
456e800a | 24028 | macro_define_function (file, line, name.c_str (), |
6e70227d | 24029 | argc, (const char **) argv, |
2e276125 JB |
24030 | p + 1); |
24031 | else if (*p == '\0') | |
24032 | { | |
24033 | /* Complain, but do define it. */ | |
4d3c2250 | 24034 | dwarf2_macro_malformed_definition_complaint (body); |
456e800a | 24035 | macro_define_function (file, line, name.c_str (), |
6e70227d | 24036 | argc, (const char **) argv, |
2e276125 JB |
24037 | p); |
24038 | } | |
24039 | else | |
24040 | /* Just complain. */ | |
4d3c2250 | 24041 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24042 | } |
24043 | else | |
24044 | /* Just complain. */ | |
4d3c2250 | 24045 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24046 | |
2e276125 JB |
24047 | { |
24048 | int i; | |
24049 | ||
24050 | for (i = 0; i < argc; i++) | |
24051 | xfree (argv[i]); | |
24052 | } | |
24053 | xfree (argv); | |
24054 | } | |
24055 | else | |
4d3c2250 | 24056 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24057 | } |
24058 | ||
cf2c3c16 TT |
24059 | /* Skip some bytes from BYTES according to the form given in FORM. |
24060 | Returns the new pointer. */ | |
2e276125 | 24061 | |
d521ce57 TT |
24062 | static const gdb_byte * |
24063 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24064 | enum dwarf_form form, |
24065 | unsigned int offset_size, | |
24066 | struct dwarf2_section_info *section) | |
2e276125 | 24067 | { |
cf2c3c16 | 24068 | unsigned int bytes_read; |
2e276125 | 24069 | |
cf2c3c16 | 24070 | switch (form) |
2e276125 | 24071 | { |
cf2c3c16 TT |
24072 | case DW_FORM_data1: |
24073 | case DW_FORM_flag: | |
24074 | ++bytes; | |
24075 | break; | |
24076 | ||
24077 | case DW_FORM_data2: | |
24078 | bytes += 2; | |
24079 | break; | |
24080 | ||
24081 | case DW_FORM_data4: | |
24082 | bytes += 4; | |
24083 | break; | |
24084 | ||
24085 | case DW_FORM_data8: | |
24086 | bytes += 8; | |
24087 | break; | |
24088 | ||
0224619f JK |
24089 | case DW_FORM_data16: |
24090 | bytes += 16; | |
24091 | break; | |
24092 | ||
cf2c3c16 TT |
24093 | case DW_FORM_string: |
24094 | read_direct_string (abfd, bytes, &bytes_read); | |
24095 | bytes += bytes_read; | |
24096 | break; | |
24097 | ||
24098 | case DW_FORM_sec_offset: | |
24099 | case DW_FORM_strp: | |
36586728 | 24100 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24101 | bytes += offset_size; |
24102 | break; | |
24103 | ||
24104 | case DW_FORM_block: | |
24105 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24106 | bytes += bytes_read; | |
24107 | break; | |
24108 | ||
24109 | case DW_FORM_block1: | |
24110 | bytes += 1 + read_1_byte (abfd, bytes); | |
24111 | break; | |
24112 | case DW_FORM_block2: | |
24113 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24114 | break; | |
24115 | case DW_FORM_block4: | |
24116 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24117 | break; | |
24118 | ||
336d760d | 24119 | case DW_FORM_addrx: |
cf2c3c16 | 24120 | case DW_FORM_sdata: |
cf532bd1 | 24121 | case DW_FORM_strx: |
cf2c3c16 | 24122 | case DW_FORM_udata: |
3019eac3 DE |
24123 | case DW_FORM_GNU_addr_index: |
24124 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24125 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24126 | if (bytes == NULL) |
24127 | { | |
24128 | dwarf2_section_buffer_overflow_complaint (section); | |
24129 | return NULL; | |
24130 | } | |
cf2c3c16 TT |
24131 | break; |
24132 | ||
663c44ac JK |
24133 | case DW_FORM_implicit_const: |
24134 | break; | |
24135 | ||
cf2c3c16 TT |
24136 | default: |
24137 | { | |
b98664d3 | 24138 | complaint (_("invalid form 0x%x in `%s'"), |
96b79293 | 24139 | form, section->get_name ()); |
cf2c3c16 TT |
24140 | return NULL; |
24141 | } | |
2e276125 JB |
24142 | } |
24143 | ||
cf2c3c16 TT |
24144 | return bytes; |
24145 | } | |
757a13d0 | 24146 | |
cf2c3c16 TT |
24147 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24148 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24149 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24150 | |
d521ce57 | 24151 | static const gdb_byte * |
cf2c3c16 | 24152 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24153 | const gdb_byte **opcode_definitions, |
24154 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24155 | bfd *abfd, |
24156 | unsigned int offset_size, | |
24157 | struct dwarf2_section_info *section) | |
24158 | { | |
24159 | unsigned int bytes_read, i; | |
24160 | unsigned long arg; | |
d521ce57 | 24161 | const gdb_byte *defn; |
2e276125 | 24162 | |
cf2c3c16 | 24163 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24164 | { |
b98664d3 | 24165 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24166 | opcode); |
24167 | return NULL; | |
24168 | } | |
2e276125 | 24169 | |
cf2c3c16 TT |
24170 | defn = opcode_definitions[opcode]; |
24171 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24172 | defn += bytes_read; | |
2e276125 | 24173 | |
cf2c3c16 TT |
24174 | for (i = 0; i < arg; ++i) |
24175 | { | |
aead7601 SM |
24176 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24177 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24178 | section); |
cf2c3c16 TT |
24179 | if (mac_ptr == NULL) |
24180 | { | |
24181 | /* skip_form_bytes already issued the complaint. */ | |
24182 | return NULL; | |
24183 | } | |
24184 | } | |
757a13d0 | 24185 | |
cf2c3c16 TT |
24186 | return mac_ptr; |
24187 | } | |
757a13d0 | 24188 | |
cf2c3c16 TT |
24189 | /* A helper function which parses the header of a macro section. |
24190 | If the macro section is the extended (for now called "GNU") type, | |
24191 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24192 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24193 | |
d521ce57 TT |
24194 | static const gdb_byte * |
24195 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24196 | bfd *abfd, |
d521ce57 | 24197 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24198 | unsigned int *offset_size, |
24199 | int section_is_gnu) | |
24200 | { | |
24201 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24202 | |
cf2c3c16 TT |
24203 | if (section_is_gnu) |
24204 | { | |
24205 | unsigned int version, flags; | |
757a13d0 | 24206 | |
cf2c3c16 | 24207 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24208 | if (version != 4 && version != 5) |
cf2c3c16 | 24209 | { |
b98664d3 | 24210 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24211 | version); |
24212 | return NULL; | |
24213 | } | |
24214 | mac_ptr += 2; | |
757a13d0 | 24215 | |
cf2c3c16 TT |
24216 | flags = read_1_byte (abfd, mac_ptr); |
24217 | ++mac_ptr; | |
24218 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24219 | |
cf2c3c16 TT |
24220 | if ((flags & 2) != 0) |
24221 | /* We don't need the line table offset. */ | |
24222 | mac_ptr += *offset_size; | |
757a13d0 | 24223 | |
cf2c3c16 TT |
24224 | /* Vendor opcode descriptions. */ |
24225 | if ((flags & 4) != 0) | |
24226 | { | |
24227 | unsigned int i, count; | |
757a13d0 | 24228 | |
cf2c3c16 TT |
24229 | count = read_1_byte (abfd, mac_ptr); |
24230 | ++mac_ptr; | |
24231 | for (i = 0; i < count; ++i) | |
24232 | { | |
24233 | unsigned int opcode, bytes_read; | |
24234 | unsigned long arg; | |
24235 | ||
24236 | opcode = read_1_byte (abfd, mac_ptr); | |
24237 | ++mac_ptr; | |
24238 | opcode_definitions[opcode] = mac_ptr; | |
24239 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24240 | mac_ptr += bytes_read; | |
24241 | mac_ptr += arg; | |
24242 | } | |
757a13d0 | 24243 | } |
cf2c3c16 | 24244 | } |
757a13d0 | 24245 | |
cf2c3c16 TT |
24246 | return mac_ptr; |
24247 | } | |
757a13d0 | 24248 | |
cf2c3c16 | 24249 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24250 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24251 | |
24252 | static void | |
804d2729 | 24253 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24254 | bfd *abfd, |
d521ce57 | 24255 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24256 | struct macro_source_file *current_file, |
43f3e411 | 24257 | struct line_header *lh, |
cf2c3c16 | 24258 | struct dwarf2_section_info *section, |
36586728 | 24259 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24260 | unsigned int offset_size, |
8fc3fc34 | 24261 | htab_t include_hash) |
cf2c3c16 | 24262 | { |
804d2729 TT |
24263 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24264 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24265 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24266 | enum dwarf_macro_record_type macinfo_type; |
24267 | int at_commandline; | |
d521ce57 | 24268 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24269 | |
cf2c3c16 TT |
24270 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24271 | &offset_size, section_is_gnu); | |
24272 | if (mac_ptr == NULL) | |
24273 | { | |
24274 | /* We already issued a complaint. */ | |
24275 | return; | |
24276 | } | |
757a13d0 JK |
24277 | |
24278 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24279 | GDB is still reading the definitions from command line. First | |
24280 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24281 | to create CURRENT_FILE for the main source holding also the command line | |
24282 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24283 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24284 | ||
24285 | at_commandline = 1; | |
24286 | ||
24287 | do | |
24288 | { | |
24289 | /* Do we at least have room for a macinfo type byte? */ | |
24290 | if (mac_ptr >= mac_end) | |
24291 | { | |
f664829e | 24292 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24293 | break; |
24294 | } | |
24295 | ||
aead7601 | 24296 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24297 | mac_ptr++; |
24298 | ||
cf2c3c16 TT |
24299 | /* Note that we rely on the fact that the corresponding GNU and |
24300 | DWARF constants are the same. */ | |
132448f8 SM |
24301 | DIAGNOSTIC_PUSH |
24302 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24303 | switch (macinfo_type) |
24304 | { | |
24305 | /* A zero macinfo type indicates the end of the macro | |
24306 | information. */ | |
24307 | case 0: | |
24308 | break; | |
2e276125 | 24309 | |
0af92d60 JK |
24310 | case DW_MACRO_define: |
24311 | case DW_MACRO_undef: | |
24312 | case DW_MACRO_define_strp: | |
24313 | case DW_MACRO_undef_strp: | |
24314 | case DW_MACRO_define_sup: | |
24315 | case DW_MACRO_undef_sup: | |
2e276125 | 24316 | { |
891d2f0b | 24317 | unsigned int bytes_read; |
2e276125 | 24318 | int line; |
d521ce57 | 24319 | const char *body; |
cf2c3c16 | 24320 | int is_define; |
2e276125 | 24321 | |
cf2c3c16 TT |
24322 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24323 | mac_ptr += bytes_read; | |
24324 | ||
0af92d60 JK |
24325 | if (macinfo_type == DW_MACRO_define |
24326 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24327 | { |
24328 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24329 | mac_ptr += bytes_read; | |
24330 | } | |
24331 | else | |
24332 | { | |
24333 | LONGEST str_offset; | |
24334 | ||
24335 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24336 | mac_ptr += offset_size; | |
2e276125 | 24337 | |
0af92d60 JK |
24338 | if (macinfo_type == DW_MACRO_define_sup |
24339 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24340 | || section_is_dwz) |
36586728 | 24341 | { |
ed2dc618 SM |
24342 | struct dwz_file *dwz |
24343 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24344 | |
ed2dc618 SM |
24345 | body = read_indirect_string_from_dwz (objfile, |
24346 | dwz, str_offset); | |
36586728 TT |
24347 | } |
24348 | else | |
ed2dc618 SM |
24349 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24350 | abfd, str_offset); | |
cf2c3c16 TT |
24351 | } |
24352 | ||
0af92d60 JK |
24353 | is_define = (macinfo_type == DW_MACRO_define |
24354 | || macinfo_type == DW_MACRO_define_strp | |
24355 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24356 | if (! current_file) |
757a13d0 JK |
24357 | { |
24358 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24359 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24360 | "on line %d: %s"), |
cf2c3c16 TT |
24361 | is_define ? _("definition") : _("undefinition"), |
24362 | line, body); | |
757a13d0 JK |
24363 | break; |
24364 | } | |
3e43a32a MS |
24365 | if ((line == 0 && !at_commandline) |
24366 | || (line != 0 && at_commandline)) | |
b98664d3 | 24367 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24368 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24369 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24370 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24371 | ||
955b06fa | 24372 | if (body == NULL) |
7bede828 | 24373 | { |
955b06fa SDJ |
24374 | /* Fedora's rpm-build's "debugedit" binary |
24375 | corrupted .debug_macro sections. | |
24376 | ||
24377 | For more info, see | |
24378 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
24379 | complaint (_("debug info gives %s invalid macro %s " | |
24380 | "without body (corrupted?) at line %d " | |
24381 | "on file %s"), | |
24382 | at_commandline ? _("command-line") : _("in-file"), | |
24383 | is_define ? _("definition") : _("undefinition"), | |
24384 | line, current_file->filename); | |
7bede828 | 24385 | } |
955b06fa SDJ |
24386 | else if (is_define) |
24387 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
24388 | else |
24389 | { | |
0af92d60 JK |
24390 | gdb_assert (macinfo_type == DW_MACRO_undef |
24391 | || macinfo_type == DW_MACRO_undef_strp | |
24392 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24393 | macro_undef (current_file, line, body); |
24394 | } | |
2e276125 JB |
24395 | } |
24396 | break; | |
24397 | ||
0af92d60 | 24398 | case DW_MACRO_start_file: |
2e276125 | 24399 | { |
891d2f0b | 24400 | unsigned int bytes_read; |
2e276125 JB |
24401 | int line, file; |
24402 | ||
24403 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24404 | mac_ptr += bytes_read; | |
24405 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24406 | mac_ptr += bytes_read; | |
24407 | ||
3e43a32a MS |
24408 | if ((line == 0 && !at_commandline) |
24409 | || (line != 0 && at_commandline)) | |
b98664d3 | 24410 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24411 | "from %s at %s line %d"), |
24412 | file, at_commandline ? _("command-line") : _("file"), | |
24413 | line == 0 ? _("zero") : _("non-zero"), line); | |
24414 | ||
24415 | if (at_commandline) | |
24416 | { | |
0af92d60 | 24417 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24418 | pass one. */ |
757a13d0 JK |
24419 | at_commandline = 0; |
24420 | } | |
24421 | else | |
804d2729 TT |
24422 | current_file = macro_start_file (cu, file, line, current_file, |
24423 | lh); | |
2e276125 JB |
24424 | } |
24425 | break; | |
24426 | ||
0af92d60 | 24427 | case DW_MACRO_end_file: |
2e276125 | 24428 | if (! current_file) |
b98664d3 | 24429 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24430 | "`close_file' directive")); |
2e276125 JB |
24431 | else |
24432 | { | |
24433 | current_file = current_file->included_by; | |
24434 | if (! current_file) | |
24435 | { | |
cf2c3c16 | 24436 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24437 | |
24438 | /* GCC circa March 2002 doesn't produce the zero | |
24439 | type byte marking the end of the compilation | |
24440 | unit. Complain if it's not there, but exit no | |
24441 | matter what. */ | |
24442 | ||
24443 | /* Do we at least have room for a macinfo type byte? */ | |
24444 | if (mac_ptr >= mac_end) | |
24445 | { | |
f664829e | 24446 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24447 | return; |
24448 | } | |
24449 | ||
24450 | /* We don't increment mac_ptr here, so this is just | |
24451 | a look-ahead. */ | |
aead7601 SM |
24452 | next_type |
24453 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24454 | mac_ptr); | |
2e276125 | 24455 | if (next_type != 0) |
b98664d3 | 24456 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24457 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24458 | |
24459 | return; | |
24460 | } | |
24461 | } | |
24462 | break; | |
24463 | ||
0af92d60 JK |
24464 | case DW_MACRO_import: |
24465 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24466 | { |
24467 | LONGEST offset; | |
8fc3fc34 | 24468 | void **slot; |
a036ba48 TT |
24469 | bfd *include_bfd = abfd; |
24470 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24471 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24472 | int is_dwz = section_is_dwz; |
d521ce57 | 24473 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24474 | |
24475 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24476 | mac_ptr += offset_size; | |
24477 | ||
0af92d60 | 24478 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24479 | { |
ed2dc618 | 24480 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24481 | |
96b79293 | 24482 | dwz->macro.read (objfile); |
a036ba48 | 24483 | |
a036ba48 | 24484 | include_section = &dwz->macro; |
96b79293 | 24485 | include_bfd = include_section->get_bfd_owner (); |
a036ba48 TT |
24486 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24487 | is_dwz = 1; | |
24488 | } | |
24489 | ||
24490 | new_mac_ptr = include_section->buffer + offset; | |
24491 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24492 | ||
8fc3fc34 TT |
24493 | if (*slot != NULL) |
24494 | { | |
24495 | /* This has actually happened; see | |
24496 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24497 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24498 | ".debug_macro section")); |
24499 | } | |
24500 | else | |
24501 | { | |
d521ce57 | 24502 | *slot = (void *) new_mac_ptr; |
36586728 | 24503 | |
804d2729 | 24504 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24505 | include_mac_end, current_file, lh, |
36586728 | 24506 | section, section_is_gnu, is_dwz, |
4d663531 | 24507 | offset_size, include_hash); |
8fc3fc34 | 24508 | |
d521ce57 | 24509 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24510 | } |
cf2c3c16 TT |
24511 | } |
24512 | break; | |
24513 | ||
2e276125 | 24514 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24515 | if (!section_is_gnu) |
24516 | { | |
24517 | unsigned int bytes_read; | |
2e276125 | 24518 | |
ac298888 TT |
24519 | /* This reads the constant, but since we don't recognize |
24520 | any vendor extensions, we ignore it. */ | |
24521 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24522 | mac_ptr += bytes_read; |
24523 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24524 | mac_ptr += bytes_read; | |
2e276125 | 24525 | |
cf2c3c16 TT |
24526 | /* We don't recognize any vendor extensions. */ |
24527 | break; | |
24528 | } | |
24529 | /* FALLTHROUGH */ | |
24530 | ||
24531 | default: | |
24532 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24533 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24534 | section); |
24535 | if (mac_ptr == NULL) | |
24536 | return; | |
24537 | break; | |
2e276125 | 24538 | } |
132448f8 | 24539 | DIAGNOSTIC_POP |
757a13d0 | 24540 | } while (macinfo_type != 0); |
2e276125 | 24541 | } |
8e19ed76 | 24542 | |
cf2c3c16 | 24543 | static void |
09262596 | 24544 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24545 | int section_is_gnu) |
cf2c3c16 | 24546 | { |
518817b3 SM |
24547 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24548 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24549 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24550 | struct line_header *lh = cu->line_header; |
24551 | bfd *abfd; | |
d521ce57 | 24552 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24553 | struct macro_source_file *current_file = 0; |
24554 | enum dwarf_macro_record_type macinfo_type; | |
24555 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24556 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24557 | void **slot; |
09262596 DE |
24558 | struct dwarf2_section_info *section; |
24559 | const char *section_name; | |
24560 | ||
24561 | if (cu->dwo_unit != NULL) | |
24562 | { | |
24563 | if (section_is_gnu) | |
24564 | { | |
24565 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24566 | section_name = ".debug_macro.dwo"; | |
24567 | } | |
24568 | else | |
24569 | { | |
24570 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24571 | section_name = ".debug_macinfo.dwo"; | |
24572 | } | |
24573 | } | |
24574 | else | |
24575 | { | |
24576 | if (section_is_gnu) | |
24577 | { | |
24578 | section = &dwarf2_per_objfile->macro; | |
24579 | section_name = ".debug_macro"; | |
24580 | } | |
24581 | else | |
24582 | { | |
24583 | section = &dwarf2_per_objfile->macinfo; | |
24584 | section_name = ".debug_macinfo"; | |
24585 | } | |
24586 | } | |
cf2c3c16 | 24587 | |
96b79293 | 24588 | section->read (objfile); |
cf2c3c16 TT |
24589 | if (section->buffer == NULL) |
24590 | { | |
b98664d3 | 24591 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24592 | return; |
24593 | } | |
96b79293 | 24594 | abfd = section->get_bfd_owner (); |
cf2c3c16 TT |
24595 | |
24596 | /* First pass: Find the name of the base filename. | |
24597 | This filename is needed in order to process all macros whose definition | |
24598 | (or undefinition) comes from the command line. These macros are defined | |
24599 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24600 | associated to the base file. | |
24601 | ||
24602 | To determine the base file name, we scan the macro definitions until we | |
24603 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24604 | CURRENT_FILE accordingly so that any macro definition found before the | |
24605 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24606 | ||
24607 | mac_ptr = section->buffer + offset; | |
24608 | mac_end = section->buffer + section->size; | |
24609 | ||
24610 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24611 | &offset_size, section_is_gnu); | |
24612 | if (mac_ptr == NULL) | |
24613 | { | |
24614 | /* We already issued a complaint. */ | |
24615 | return; | |
24616 | } | |
24617 | ||
24618 | do | |
24619 | { | |
24620 | /* Do we at least have room for a macinfo type byte? */ | |
24621 | if (mac_ptr >= mac_end) | |
24622 | { | |
24623 | /* Complaint is printed during the second pass as GDB will probably | |
24624 | stop the first pass earlier upon finding | |
24625 | DW_MACINFO_start_file. */ | |
24626 | break; | |
24627 | } | |
24628 | ||
aead7601 | 24629 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24630 | mac_ptr++; |
24631 | ||
24632 | /* Note that we rely on the fact that the corresponding GNU and | |
24633 | DWARF constants are the same. */ | |
132448f8 SM |
24634 | DIAGNOSTIC_PUSH |
24635 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24636 | switch (macinfo_type) |
24637 | { | |
24638 | /* A zero macinfo type indicates the end of the macro | |
24639 | information. */ | |
24640 | case 0: | |
24641 | break; | |
24642 | ||
0af92d60 JK |
24643 | case DW_MACRO_define: |
24644 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24645 | /* Only skip the data by MAC_PTR. */ |
24646 | { | |
24647 | unsigned int bytes_read; | |
24648 | ||
24649 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24650 | mac_ptr += bytes_read; | |
24651 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24652 | mac_ptr += bytes_read; | |
24653 | } | |
24654 | break; | |
24655 | ||
0af92d60 | 24656 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24657 | { |
24658 | unsigned int bytes_read; | |
24659 | int line, file; | |
24660 | ||
24661 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24662 | mac_ptr += bytes_read; | |
24663 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24664 | mac_ptr += bytes_read; | |
24665 | ||
804d2729 | 24666 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24667 | } |
24668 | break; | |
24669 | ||
0af92d60 | 24670 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24671 | /* No data to skip by MAC_PTR. */ |
24672 | break; | |
24673 | ||
0af92d60 JK |
24674 | case DW_MACRO_define_strp: |
24675 | case DW_MACRO_undef_strp: | |
24676 | case DW_MACRO_define_sup: | |
24677 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24678 | { |
24679 | unsigned int bytes_read; | |
24680 | ||
24681 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24682 | mac_ptr += bytes_read; | |
24683 | mac_ptr += offset_size; | |
24684 | } | |
24685 | break; | |
24686 | ||
0af92d60 JK |
24687 | case DW_MACRO_import: |
24688 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24689 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24690 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24691 | skip this opcode. */ |
24692 | mac_ptr += offset_size; | |
24693 | break; | |
24694 | ||
24695 | case DW_MACINFO_vendor_ext: | |
24696 | /* Only skip the data by MAC_PTR. */ | |
24697 | if (!section_is_gnu) | |
24698 | { | |
24699 | unsigned int bytes_read; | |
24700 | ||
24701 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24702 | mac_ptr += bytes_read; | |
24703 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24704 | mac_ptr += bytes_read; | |
24705 | } | |
24706 | /* FALLTHROUGH */ | |
24707 | ||
24708 | default: | |
24709 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24710 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24711 | section); |
24712 | if (mac_ptr == NULL) | |
24713 | return; | |
24714 | break; | |
24715 | } | |
132448f8 | 24716 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24717 | } while (macinfo_type != 0 && current_file == NULL); |
24718 | ||
24719 | /* Second pass: Process all entries. | |
24720 | ||
24721 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24722 | command-line macro definitions/undefinitions. This flag is unset when we | |
24723 | reach the first DW_MACINFO_start_file entry. */ | |
24724 | ||
fc4007c9 TT |
24725 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24726 | htab_eq_pointer, | |
24727 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24728 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24729 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24730 | *slot = (void *) mac_ptr; |
804d2729 | 24731 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 24732 | current_file, lh, section, |
fc4007c9 TT |
24733 | section_is_gnu, 0, offset_size, |
24734 | include_hash.get ()); | |
cf2c3c16 TT |
24735 | } |
24736 | ||
3019eac3 DE |
24737 | /* Return the .debug_loc section to use for CU. |
24738 | For DWO files use .debug_loc.dwo. */ | |
24739 | ||
24740 | static struct dwarf2_section_info * | |
24741 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24742 | { | |
518817b3 SM |
24743 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24744 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24745 | |
3019eac3 | 24746 | if (cu->dwo_unit) |
43988095 JK |
24747 | { |
24748 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24749 | |
43988095 JK |
24750 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24751 | } | |
24752 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24753 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24754 | } |
24755 | ||
8cf6f0b1 TT |
24756 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24757 | ||
24758 | static void | |
24759 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24760 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24761 | const struct attribute *attr) |
8cf6f0b1 | 24762 | { |
518817b3 SM |
24763 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24764 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24765 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24766 | ||
96b79293 | 24767 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
24768 | |
24769 | baton->per_cu = cu->per_cu; | |
24770 | gdb_assert (baton->per_cu); | |
24771 | /* We don't know how long the location list is, but make sure we | |
24772 | don't run off the edge of the section. */ | |
3019eac3 DE |
24773 | baton->size = section->size - DW_UNSND (attr); |
24774 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24775 | baton->base_address = cu->base_address; |
f664829e | 24776 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24777 | } |
24778 | ||
4c2df51b | 24779 | static void |
ff39bb5e | 24780 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24781 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24782 | { |
518817b3 SM |
24783 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24784 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24785 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24786 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24787 | |
cd6c91b4 | 24788 | if (attr->form_is_section_offset () |
3019eac3 | 24789 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24790 | the section. If so, fall through to the complaint in the |
24791 | other branch. */ | |
3019eac3 | 24792 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24793 | { |
0d53c4c4 | 24794 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24795 | |
8d749320 | 24796 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24797 | |
8cf6f0b1 | 24798 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24799 | |
d00adf39 | 24800 | if (cu->base_known == 0) |
b98664d3 | 24801 | complaint (_("Location list used without " |
3e43a32a | 24802 | "specifying the CU base address.")); |
4c2df51b | 24803 | |
f1e6e072 TT |
24804 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24805 | ? dwarf2_loclist_block_index | |
24806 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24807 | SYMBOL_LOCATION_BATON (sym) = baton; |
24808 | } | |
24809 | else | |
24810 | { | |
24811 | struct dwarf2_locexpr_baton *baton; | |
24812 | ||
8d749320 | 24813 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24814 | baton->per_cu = cu->per_cu; |
24815 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24816 | |
4fc6c0d5 | 24817 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24818 | { |
24819 | /* Note that we're just copying the block's data pointer | |
24820 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24821 | info_buffer for SYM's objfile; right now we never release |
24822 | that buffer, but when we do clean up properly this may | |
24823 | need to change. */ | |
0d53c4c4 DJ |
24824 | baton->size = DW_BLOCK (attr)->size; |
24825 | baton->data = DW_BLOCK (attr)->data; | |
24826 | } | |
24827 | else | |
24828 | { | |
24829 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24830 | sym->natural_name ()); |
0d53c4c4 | 24831 | baton->size = 0; |
0d53c4c4 | 24832 | } |
6e70227d | 24833 | |
f1e6e072 TT |
24834 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24835 | ? dwarf2_locexpr_block_index | |
24836 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24837 | SYMBOL_LOCATION_BATON (sym) = baton; |
24838 | } | |
4c2df51b | 24839 | } |
6502dd73 | 24840 | |
9aa1f1e3 TT |
24841 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24842 | came from a separate debuginfo file, then the master objfile is | |
24843 | returned. */ | |
ae0d2f24 UW |
24844 | |
24845 | struct objfile * | |
24846 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24847 | { | |
e3b94546 | 24848 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24849 | |
24850 | /* Return the master objfile, so that we can report and look up the | |
24851 | correct file containing this variable. */ | |
24852 | if (objfile->separate_debug_objfile_backlink) | |
24853 | objfile = objfile->separate_debug_objfile_backlink; | |
24854 | ||
24855 | return objfile; | |
24856 | } | |
24857 | ||
96408a79 SA |
24858 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24859 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24860 | CU_HEADERP first. */ | |
24861 | ||
24862 | static const struct comp_unit_head * | |
24863 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24864 | struct dwarf2_per_cu_data *per_cu) | |
24865 | { | |
d521ce57 | 24866 | const gdb_byte *info_ptr; |
96408a79 SA |
24867 | |
24868 | if (per_cu->cu) | |
24869 | return &per_cu->cu->header; | |
24870 | ||
9c541725 | 24871 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24872 | |
24873 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24874 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24875 | rcuh_kind::COMPILE); | |
96408a79 SA |
24876 | |
24877 | return cu_headerp; | |
24878 | } | |
24879 | ||
ae0d2f24 UW |
24880 | /* Return the address size given in the compilation unit header for CU. */ |
24881 | ||
98714339 | 24882 | int |
ae0d2f24 UW |
24883 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
24884 | { | |
96408a79 SA |
24885 | struct comp_unit_head cu_header_local; |
24886 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24887 | |
96408a79 SA |
24888 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24889 | ||
24890 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24891 | } |
24892 | ||
9eae7c52 TT |
24893 | /* Return the offset size given in the compilation unit header for CU. */ |
24894 | ||
24895 | int | |
24896 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
24897 | { | |
96408a79 SA |
24898 | struct comp_unit_head cu_header_local; |
24899 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24900 | |
96408a79 SA |
24901 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24902 | ||
24903 | return cu_headerp->offset_size; | |
24904 | } | |
24905 | ||
24906 | /* See its dwarf2loc.h declaration. */ | |
24907 | ||
24908 | int | |
24909 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
24910 | { | |
24911 | struct comp_unit_head cu_header_local; | |
24912 | const struct comp_unit_head *cu_headerp; | |
24913 | ||
24914 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
24915 | ||
24916 | if (cu_headerp->version == 2) | |
24917 | return cu_headerp->addr_size; | |
24918 | else | |
24919 | return cu_headerp->offset_size; | |
181cebd4 JK |
24920 | } |
24921 | ||
9aa1f1e3 TT |
24922 | /* Return the text offset of the CU. The returned offset comes from |
24923 | this CU's objfile. If this objfile came from a separate debuginfo | |
24924 | file, then the offset may be different from the corresponding | |
24925 | offset in the parent objfile. */ | |
24926 | ||
24927 | CORE_ADDR | |
24928 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
24929 | { | |
b3b3bada | 24930 | return per_cu->dwarf2_per_objfile->objfile->text_section_offset (); |
9aa1f1e3 TT |
24931 | } |
24932 | ||
9a49df9d AB |
24933 | /* Return a type that is a generic pointer type, the size of which matches |
24934 | the address size given in the compilation unit header for PER_CU. */ | |
24935 | static struct type * | |
24936 | dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu) | |
24937 | { | |
24938 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
24939 | struct type *void_type = objfile_type (objfile)->builtin_void; | |
24940 | struct type *addr_type = lookup_pointer_type (void_type); | |
24941 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
24942 | ||
24943 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24944 | return addr_type; | |
24945 | ||
24946 | addr_type | |
24947 | = dwarf2_per_cu_addr_sized_int_type (per_cu, TYPE_UNSIGNED (addr_type)); | |
24948 | return addr_type; | |
24949 | } | |
24950 | ||
43988095 JK |
24951 | /* Return DWARF version number of PER_CU. */ |
24952 | ||
24953 | short | |
24954 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
24955 | { | |
24956 | return per_cu->dwarf_version; | |
24957 | } | |
24958 | ||
348e048f DE |
24959 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
24960 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
24961 | |
24962 | static struct dwarf2_per_cu_data * | |
9c541725 | 24963 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 24964 | unsigned int offset_in_dwz, |
ed2dc618 | 24965 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
24966 | { |
24967 | struct dwarf2_per_cu_data *this_cu; | |
24968 | int low, high; | |
24969 | ||
ae038cb0 | 24970 | low = 0; |
b76e467d | 24971 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
24972 | while (high > low) |
24973 | { | |
36586728 | 24974 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24975 | int mid = low + (high - low) / 2; |
9a619af0 | 24976 | |
36586728 | 24977 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 24978 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24979 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 24980 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
24981 | high = mid; |
24982 | else | |
24983 | low = mid + 1; | |
24984 | } | |
24985 | gdb_assert (low == high); | |
36586728 | 24986 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 24987 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24988 | { |
36586728 | 24989 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24990 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24991 | "offset %s [in module %s]"), |
24992 | sect_offset_str (sect_off), | |
ed2dc618 | 24993 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 24994 | |
9c541725 PA |
24995 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
24996 | <= sect_off); | |
ae038cb0 DJ |
24997 | return dwarf2_per_objfile->all_comp_units[low-1]; |
24998 | } | |
24999 | else | |
25000 | { | |
b76e467d | 25001 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25002 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25003 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25004 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25005 | return this_cu; |
25006 | } | |
25007 | } | |
25008 | ||
23745b47 | 25009 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25010 | |
fcd3b13d SM |
25011 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25012 | : per_cu (per_cu_), | |
9068261f AB |
25013 | mark (false), |
25014 | has_loclist (false), | |
25015 | checked_producer (false), | |
25016 | producer_is_gxx_lt_4_6 (false), | |
25017 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25018 | producer_is_icc (false), |
9068261f | 25019 | producer_is_icc_lt_14 (false), |
c258c396 | 25020 | producer_is_codewarrior (false), |
9068261f | 25021 | processing_has_namespace_info (false) |
93311388 | 25022 | { |
fcd3b13d SM |
25023 | per_cu->cu = this; |
25024 | } | |
25025 | ||
25026 | /* Destroy a dwarf2_cu. */ | |
25027 | ||
25028 | dwarf2_cu::~dwarf2_cu () | |
25029 | { | |
25030 | per_cu->cu = NULL; | |
9816fde3 JK |
25031 | } |
25032 | ||
25033 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25034 | ||
25035 | static void | |
95554aad TT |
25036 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25037 | enum language pretend_language) | |
9816fde3 JK |
25038 | { |
25039 | struct attribute *attr; | |
25040 | ||
25041 | /* Set the language we're debugging. */ | |
25042 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25043 | if (attr != nullptr) |
9816fde3 JK |
25044 | set_cu_language (DW_UNSND (attr), cu); |
25045 | else | |
9cded63f | 25046 | { |
95554aad | 25047 | cu->language = pretend_language; |
9cded63f TT |
25048 | cu->language_defn = language_def (cu->language); |
25049 | } | |
dee91e82 | 25050 | |
7d45c7c3 | 25051 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25052 | } |
25053 | ||
ae038cb0 DJ |
25054 | /* Increase the age counter on each cached compilation unit, and free |
25055 | any that are too old. */ | |
25056 | ||
25057 | static void | |
ed2dc618 | 25058 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25059 | { |
25060 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25061 | ||
25062 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25063 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25064 | while (per_cu != NULL) | |
25065 | { | |
25066 | per_cu->cu->last_used ++; | |
b4f54984 | 25067 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25068 | dwarf2_mark (per_cu->cu); |
25069 | per_cu = per_cu->cu->read_in_chain; | |
25070 | } | |
25071 | ||
25072 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25073 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25074 | while (per_cu != NULL) | |
25075 | { | |
25076 | struct dwarf2_per_cu_data *next_cu; | |
25077 | ||
25078 | next_cu = per_cu->cu->read_in_chain; | |
25079 | ||
25080 | if (!per_cu->cu->mark) | |
25081 | { | |
fcd3b13d | 25082 | delete per_cu->cu; |
ae038cb0 DJ |
25083 | *last_chain = next_cu; |
25084 | } | |
25085 | else | |
25086 | last_chain = &per_cu->cu->read_in_chain; | |
25087 | ||
25088 | per_cu = next_cu; | |
25089 | } | |
25090 | } | |
25091 | ||
25092 | /* Remove a single compilation unit from the cache. */ | |
25093 | ||
25094 | static void | |
dee91e82 | 25095 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25096 | { |
25097 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25098 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25099 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25100 | |
25101 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25102 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25103 | while (per_cu != NULL) | |
25104 | { | |
25105 | struct dwarf2_per_cu_data *next_cu; | |
25106 | ||
25107 | next_cu = per_cu->cu->read_in_chain; | |
25108 | ||
dee91e82 | 25109 | if (per_cu == target_per_cu) |
ae038cb0 | 25110 | { |
fcd3b13d | 25111 | delete per_cu->cu; |
dee91e82 | 25112 | per_cu->cu = NULL; |
ae038cb0 DJ |
25113 | *last_chain = next_cu; |
25114 | break; | |
25115 | } | |
25116 | else | |
25117 | last_chain = &per_cu->cu->read_in_chain; | |
25118 | ||
25119 | per_cu = next_cu; | |
25120 | } | |
25121 | } | |
25122 | ||
dee91e82 DE |
25123 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25124 | We store these in a hash table separate from the DIEs, and preserve them | |
25125 | when the DIEs are flushed out of cache. | |
25126 | ||
25127 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25128 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25129 | or the type may come from a DWO file. Furthermore, while it's more logical |
25130 | to use per_cu->section+offset, with Fission the section with the data is in | |
25131 | the DWO file but we don't know that section at the point we need it. | |
25132 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25133 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25134 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25135 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25136 | |
dee91e82 | 25137 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25138 | { |
dee91e82 | 25139 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25140 | sect_offset sect_off; |
1c379e20 DJ |
25141 | struct type *type; |
25142 | }; | |
25143 | ||
dee91e82 | 25144 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25145 | |
25146 | static hashval_t | |
dee91e82 | 25147 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25148 | { |
9a3c8263 SM |
25149 | const struct dwarf2_per_cu_offset_and_type *ofs |
25150 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25151 | |
9c541725 | 25152 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25153 | } |
25154 | ||
dee91e82 | 25155 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25156 | |
25157 | static int | |
dee91e82 | 25158 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25159 | { |
9a3c8263 SM |
25160 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25161 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25162 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25163 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25164 | |
dee91e82 | 25165 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25166 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25167 | } |
25168 | ||
25169 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25170 | table if necessary. For convenience, return TYPE. |
25171 | ||
25172 | The DIEs reading must have careful ordering to: | |
85102364 | 25173 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25174 | reading current DIE. |
25175 | * Not trying to dereference contents of still incompletely read in types | |
25176 | while reading in other DIEs. | |
25177 | * Enable referencing still incompletely read in types just by a pointer to | |
25178 | the type without accessing its fields. | |
25179 | ||
25180 | Therefore caller should follow these rules: | |
25181 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25182 | before building the type and calling set_die_type. | |
e71ec853 | 25183 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25184 | possible before fetching more types to complete the current type. |
25185 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25186 | |
f792889a | 25187 | static struct type * |
1c379e20 DJ |
25188 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25189 | { | |
518817b3 SM |
25190 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25191 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25192 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25193 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25194 | struct attribute *attr; |
25195 | struct dynamic_prop prop; | |
1c379e20 | 25196 | |
b4ba55a1 JB |
25197 | /* For Ada types, make sure that the gnat-specific data is always |
25198 | initialized (if not already set). There are a few types where | |
25199 | we should not be doing so, because the type-specific area is | |
25200 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25201 | where the type-specific area is used to store the floatformat). | |
25202 | But this is not a problem, because the gnat-specific information | |
25203 | is actually not needed for these types. */ | |
25204 | if (need_gnat_info (cu) | |
25205 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25206 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25207 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25208 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25209 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25210 | && !HAVE_GNAT_AUX_INFO (type)) |
25211 | INIT_GNAT_SPECIFIC (type); | |
25212 | ||
3f2f83dd KB |
25213 | /* Read DW_AT_allocated and set in type. */ |
25214 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 25215 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 25216 | { |
9a49df9d AB |
25217 | struct type *prop_type |
25218 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25219 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25220 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25221 | } |
25222 | else if (attr != NULL) | |
25223 | { | |
b98664d3 | 25224 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25225 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25226 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25227 | } |
25228 | ||
25229 | /* Read DW_AT_associated and set in type. */ | |
25230 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 25231 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 25232 | { |
9a49df9d AB |
25233 | struct type *prop_type |
25234 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25235 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25236 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25237 | } |
25238 | else if (attr != NULL) | |
25239 | { | |
b98664d3 | 25240 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25241 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25242 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25243 | } |
25244 | ||
3cdcd0ce JB |
25245 | /* Read DW_AT_data_location and set in type. */ |
25246 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d AB |
25247 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
25248 | dwarf2_per_cu_addr_type (cu->per_cu))) | |
50a82047 | 25249 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25250 | |
dee91e82 | 25251 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25252 | { |
dee91e82 DE |
25253 | dwarf2_per_objfile->die_type_hash = |
25254 | htab_create_alloc_ex (127, | |
25255 | per_cu_offset_and_type_hash, | |
25256 | per_cu_offset_and_type_eq, | |
25257 | NULL, | |
25258 | &objfile->objfile_obstack, | |
25259 | hashtab_obstack_allocate, | |
25260 | dummy_obstack_deallocate); | |
f792889a | 25261 | } |
1c379e20 | 25262 | |
dee91e82 | 25263 | ofs.per_cu = cu->per_cu; |
9c541725 | 25264 | ofs.sect_off = die->sect_off; |
1c379e20 | 25265 | ofs.type = type; |
dee91e82 DE |
25266 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25267 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25268 | if (*slot) |
b98664d3 | 25269 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25270 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25271 | *slot = XOBNEW (&objfile->objfile_obstack, |
25272 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25273 | **slot = ofs; |
f792889a | 25274 | return type; |
1c379e20 DJ |
25275 | } |
25276 | ||
9c541725 | 25277 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25278 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25279 | |
25280 | static struct type * | |
9c541725 | 25281 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25282 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25283 | { |
dee91e82 | 25284 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25285 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25286 | |
dee91e82 | 25287 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25288 | return NULL; |
1c379e20 | 25289 | |
dee91e82 | 25290 | ofs.per_cu = per_cu; |
9c541725 | 25291 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25292 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25293 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25294 | if (slot) |
25295 | return slot->type; | |
25296 | else | |
25297 | return NULL; | |
25298 | } | |
25299 | ||
02142a6c | 25300 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25301 | or return NULL if DIE does not have a saved type. */ |
25302 | ||
25303 | static struct type * | |
25304 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25305 | { | |
9c541725 | 25306 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25307 | } |
25308 | ||
10b3939b DJ |
25309 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25310 | ||
25311 | static void | |
25312 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25313 | struct dwarf2_per_cu_data *ref_per_cu) | |
25314 | { | |
25315 | void **slot; | |
25316 | ||
25317 | if (cu->dependencies == NULL) | |
25318 | cu->dependencies | |
25319 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25320 | NULL, &cu->comp_unit_obstack, | |
25321 | hashtab_obstack_allocate, | |
25322 | dummy_obstack_deallocate); | |
25323 | ||
25324 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25325 | if (*slot == NULL) | |
25326 | *slot = ref_per_cu; | |
25327 | } | |
1c379e20 | 25328 | |
f504f079 DE |
25329 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25330 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25331 | cache that we must keep because we are keeping CU. */ |
25332 | ||
10b3939b DJ |
25333 | static int |
25334 | dwarf2_mark_helper (void **slot, void *data) | |
25335 | { | |
25336 | struct dwarf2_per_cu_data *per_cu; | |
25337 | ||
25338 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25339 | |
25340 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25341 | reading of the chain. As such dependencies remain valid it is not much | |
25342 | useful to track and undo them during QUIT cleanups. */ | |
25343 | if (per_cu->cu == NULL) | |
25344 | return 1; | |
25345 | ||
10b3939b DJ |
25346 | if (per_cu->cu->mark) |
25347 | return 1; | |
9068261f | 25348 | per_cu->cu->mark = true; |
10b3939b DJ |
25349 | |
25350 | if (per_cu->cu->dependencies != NULL) | |
25351 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25352 | ||
25353 | return 1; | |
25354 | } | |
25355 | ||
f504f079 DE |
25356 | /* Set the mark field in CU and in every other compilation unit in the |
25357 | cache that we must keep because we are keeping CU. */ | |
25358 | ||
ae038cb0 DJ |
25359 | static void |
25360 | dwarf2_mark (struct dwarf2_cu *cu) | |
25361 | { | |
25362 | if (cu->mark) | |
25363 | return; | |
9068261f | 25364 | cu->mark = true; |
10b3939b DJ |
25365 | if (cu->dependencies != NULL) |
25366 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25367 | } |
25368 | ||
25369 | static void | |
25370 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25371 | { | |
25372 | while (per_cu) | |
25373 | { | |
9068261f | 25374 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25375 | per_cu = per_cu->cu->read_in_chain; |
25376 | } | |
72bf9492 DJ |
25377 | } |
25378 | ||
72bf9492 DJ |
25379 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25380 | is its offset in .debug_info for this objfile. */ | |
25381 | ||
25382 | static hashval_t | |
25383 | partial_die_hash (const void *item) | |
25384 | { | |
9a3c8263 SM |
25385 | const struct partial_die_info *part_die |
25386 | = (const struct partial_die_info *) item; | |
9a619af0 | 25387 | |
9c541725 | 25388 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25389 | } |
25390 | ||
25391 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25392 | are equal if they have the same offset. */ | |
25393 | ||
25394 | static int | |
25395 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25396 | { | |
9a3c8263 SM |
25397 | const struct partial_die_info *part_die_lhs |
25398 | = (const struct partial_die_info *) item_lhs; | |
25399 | const struct partial_die_info *part_die_rhs | |
25400 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25401 | |
9c541725 | 25402 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25403 | } |
25404 | ||
3c3bb058 AB |
25405 | struct cmd_list_element *set_dwarf_cmdlist; |
25406 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25407 | |
25408 | static void | |
981a3fb3 | 25409 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25410 | { |
b4f54984 | 25411 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25412 | gdb_stdout); |
ae038cb0 DJ |
25413 | } |
25414 | ||
25415 | static void | |
981a3fb3 | 25416 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25417 | { |
b4f54984 | 25418 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25419 | } |
25420 | ||
491144b5 | 25421 | bool dwarf_always_disassemble; |
437afbb8 | 25422 | |
437afbb8 | 25423 | static void |
cd4fb1b2 SM |
25424 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25425 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25426 | { |
cd4fb1b2 SM |
25427 | fprintf_filtered (file, |
25428 | _("Whether to always disassemble " | |
25429 | "DWARF expressions is %s.\n"), | |
25430 | value); | |
9291a0cd TT |
25431 | } |
25432 | ||
9291a0cd | 25433 | static void |
cd4fb1b2 SM |
25434 | show_check_physname (struct ui_file *file, int from_tty, |
25435 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25436 | { |
cd4fb1b2 SM |
25437 | fprintf_filtered (file, |
25438 | _("Whether to check \"physname\" is %s.\n"), | |
25439 | value); | |
9291a0cd TT |
25440 | } |
25441 | ||
6c265988 | 25442 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25443 | void |
6c265988 | 25444 | _initialize_dwarf2_read () |
9291a0cd | 25445 | { |
cd4fb1b2 SM |
25446 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25447 | Set DWARF specific variables.\n\ | |
590042fc | 25448 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
25449 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25450 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25451 | |
cd4fb1b2 | 25452 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
25453 | Show DWARF specific variables.\n\ |
25454 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
25455 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25456 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25457 | |
cd4fb1b2 SM |
25458 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25459 | &dwarf_max_cache_age, _("\ | |
25460 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25461 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25462 | A higher limit means that cached compilation units will be stored\n\ | |
25463 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25464 | caching, which can slow down startup."), | |
25465 | NULL, | |
25466 | show_dwarf_max_cache_age, | |
25467 | &set_dwarf_cmdlist, | |
25468 | &show_dwarf_cmdlist); | |
156942c7 | 25469 | |
cd4fb1b2 SM |
25470 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25471 | &dwarf_always_disassemble, _("\ | |
25472 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25473 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25474 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25475 | syntax. When disabled, expressions will be printed in a more\n\ | |
25476 | conversational style, when possible."), | |
25477 | NULL, | |
25478 | show_dwarf_always_disassemble, | |
25479 | &set_dwarf_cmdlist, | |
25480 | &show_dwarf_cmdlist); | |
9291a0cd | 25481 | |
cd4fb1b2 SM |
25482 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25483 | Set debugging of the DWARF reader."), _("\ | |
25484 | Show debugging of the DWARF reader."), _("\ | |
25485 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25486 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25487 | information. A value greater than 1 provides more verbose information."), | |
25488 | NULL, | |
25489 | NULL, | |
25490 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25491 | |
cd4fb1b2 SM |
25492 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25493 | Set debugging of the DWARF DIE reader."), _("\ | |
25494 | Show debugging of the DWARF DIE reader."), _("\ | |
25495 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25496 | The value is the maximum depth to print."), | |
25497 | NULL, | |
25498 | NULL, | |
25499 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25500 | |
cd4fb1b2 SM |
25501 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25502 | Set debugging of the dwarf line reader."), _("\ | |
25503 | Show debugging of the dwarf line reader."), _("\ | |
25504 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25505 | A value of 1 (one) provides basic information.\n\ | |
25506 | A value greater than 1 provides more verbose information."), | |
25507 | NULL, | |
25508 | NULL, | |
25509 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25510 | |
cd4fb1b2 SM |
25511 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25512 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25513 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25514 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25515 | the demangler."), | |
25516 | NULL, show_check_physname, | |
25517 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25518 | |
e615022a DE |
25519 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25520 | no_class, &use_deprecated_index_sections, _("\ | |
25521 | Set whether to use deprecated gdb_index sections."), _("\ | |
25522 | Show whether to use deprecated gdb_index sections."), _("\ | |
25523 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25524 | Normally they are ignored either because of a missing feature or\n\ | |
25525 | performance issue.\n\ | |
25526 | Warning: This option must be enabled before gdb reads the file."), | |
25527 | NULL, | |
25528 | NULL, | |
25529 | &setlist, &showlist); | |
25530 | ||
f1e6e072 TT |
25531 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25532 | &dwarf2_locexpr_funcs); | |
25533 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25534 | &dwarf2_loclist_funcs); | |
25535 | ||
25536 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25537 | &dwarf2_block_frame_base_locexpr_funcs); | |
25538 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25539 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25540 | |
25541 | #if GDB_SELF_TEST | |
25542 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25543 | selftests::dw2_expand_symtabs_matching::run_test); | |
25544 | #endif | |
6502dd73 | 25545 | } |