Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
82ca8957 TT |
35 | #include "dwarf2/index-cache.h" |
36 | #include "dwarf2/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" | |
82ca8957 TT |
51 | #include "dwarf2/expr.h" |
52 | #include "dwarf2/loc.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 | 905 | |
685af9cd TT |
906 | /* The abbreviation table to use when reading the DIEs. */ |
907 | struct abbrev_table *abbrev_table; | |
93311388 DE |
908 | }; |
909 | ||
c0ab21c2 TT |
910 | /* A subclass of die_reader_specs that holds storage and has complex |
911 | constructor and destructor behavior. */ | |
912 | ||
913 | class cutu_reader : public die_reader_specs | |
914 | { | |
915 | public: | |
916 | ||
917 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
918 | struct abbrev_table *abbrev_table, | |
919 | int use_existing_cu, int keep, | |
920 | bool skip_partial); | |
921 | ||
922 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
923 | struct dwarf2_cu *parent_cu = nullptr, | |
924 | struct dwo_file *dwo_file = nullptr); | |
925 | ||
926 | ~cutu_reader (); | |
927 | ||
928 | DISABLE_COPY_AND_ASSIGN (cutu_reader); | |
929 | ||
930 | const gdb_byte *info_ptr = nullptr; | |
931 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
932 | bool dummy_p = false; |
933 | ||
934 | private: | |
935 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
936 | int use_existing_cu, int keep); | |
937 | ||
938 | struct dwarf2_per_cu_data *m_this_cu; | |
939 | int m_keep = 0; | |
940 | std::unique_ptr<dwarf2_cu> m_new_cu; | |
941 | ||
942 | /* The ordinary abbreviation table. */ | |
943 | abbrev_table_up m_abbrev_table_holder; | |
944 | ||
945 | /* The DWO abbreviation table. */ | |
946 | abbrev_table_up m_dwo_abbrev_table; | |
947 | }; | |
dee91e82 | 948 | |
7ba99d21 AT |
949 | /* dir_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 and |
950 | later. */ | |
951 | typedef int dir_index; | |
ecfb656c | 952 | |
7ba99d21 AT |
953 | /* file_name_index is 1-based in DWARF 4 and before, and is 0-based in DWARF 5 |
954 | and later. */ | |
955 | typedef int file_name_index; | |
ecfb656c | 956 | |
52059ffd TT |
957 | struct file_entry |
958 | { | |
fff8551c PA |
959 | file_entry () = default; |
960 | ||
ecfb656c | 961 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
962 | unsigned int mod_time_, unsigned int length_) |
963 | : name (name_), | |
ecfb656c | 964 | d_index (d_index_), |
fff8551c PA |
965 | mod_time (mod_time_), |
966 | length (length_) | |
967 | {} | |
968 | ||
ecfb656c PA |
969 | /* Return the include directory at D_INDEX stored in LH. Returns |
970 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
971 | const char *include_dir (const line_header *lh) const; |
972 | ||
fff8551c PA |
973 | /* The file name. Note this is an observing pointer. The memory is |
974 | owned by debug_line_buffer. */ | |
975 | const char *name {}; | |
976 | ||
8c43009f | 977 | /* The directory index (1-based). */ |
ecfb656c | 978 | dir_index d_index {}; |
fff8551c PA |
979 | |
980 | unsigned int mod_time {}; | |
981 | ||
982 | unsigned int length {}; | |
983 | ||
984 | /* True if referenced by the Line Number Program. */ | |
985 | bool included_p {}; | |
986 | ||
83769d0b | 987 | /* The associated symbol table, if any. */ |
fff8551c | 988 | struct symtab *symtab {}; |
52059ffd TT |
989 | }; |
990 | ||
debd256d JB |
991 | /* The line number information for a compilation unit (found in the |
992 | .debug_line section) begins with a "statement program header", | |
993 | which contains the following information. */ | |
994 | struct line_header | |
995 | { | |
fff8551c PA |
996 | line_header () |
997 | : offset_in_dwz {} | |
998 | {} | |
999 | ||
1000 | /* Add an entry to the include directory table. */ | |
1001 | void add_include_dir (const char *include_dir); | |
1002 | ||
1003 | /* Add an entry to the file name table. */ | |
ecfb656c | 1004 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1005 | unsigned int mod_time, unsigned int length); |
1006 | ||
7ba99d21 AT |
1007 | /* Return the include dir at INDEX (0-based in DWARF 5 and 1-based before). |
1008 | Returns NULL if INDEX is out of bounds. */ | |
ecfb656c | 1009 | const char *include_dir_at (dir_index index) const |
8c43009f | 1010 | { |
7ba99d21 AT |
1011 | int vec_index; |
1012 | if (version >= 5) | |
1013 | vec_index = index; | |
1014 | else | |
1015 | vec_index = index - 1; | |
1016 | if (vec_index < 0 || vec_index >= m_include_dirs.size ()) | |
8c43009f | 1017 | return NULL; |
7ba99d21 | 1018 | return m_include_dirs[vec_index]; |
8c43009f PA |
1019 | } |
1020 | ||
7ba99d21 | 1021 | bool is_valid_file_index (int file_index) |
8c43009f | 1022 | { |
7ba99d21 AT |
1023 | if (version >= 5) |
1024 | return 0 <= file_index && file_index < file_names_size (); | |
1025 | return 1 <= file_index && file_index <= file_names_size (); | |
1026 | } | |
ecfb656c | 1027 | |
7ba99d21 AT |
1028 | /* Return the file name at INDEX (0-based in DWARF 5 and 1-based before). |
1029 | Returns NULL if INDEX is out of bounds. */ | |
1030 | file_entry *file_name_at (file_name_index index) | |
1031 | { | |
1032 | int vec_index; | |
1033 | if (version >= 5) | |
1034 | vec_index = index; | |
1035 | else | |
1036 | vec_index = index - 1; | |
1037 | if (vec_index < 0 || vec_index >= m_file_names.size ()) | |
fff8551c | 1038 | return NULL; |
7ba99d21 | 1039 | return &m_file_names[vec_index]; |
fff8551c PA |
1040 | } |
1041 | ||
7ba99d21 AT |
1042 | /* The indexes are 0-based in DWARF 5 and 1-based in DWARF 4. Therefore, |
1043 | this method should only be used to iterate through all file entries in an | |
1044 | index-agnostic manner. */ | |
1045 | std::vector<file_entry> &file_names () | |
1046 | { return m_file_names; } | |
1047 | ||
527f3840 | 1048 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1049 | sect_offset sect_off {}; |
527f3840 JK |
1050 | |
1051 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1052 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1053 | ||
1054 | unsigned int total_length {}; | |
1055 | unsigned short version {}; | |
1056 | unsigned int header_length {}; | |
1057 | unsigned char minimum_instruction_length {}; | |
1058 | unsigned char maximum_ops_per_instruction {}; | |
1059 | unsigned char default_is_stmt {}; | |
1060 | int line_base {}; | |
1061 | unsigned char line_range {}; | |
1062 | unsigned char opcode_base {}; | |
debd256d JB |
1063 | |
1064 | /* standard_opcode_lengths[i] is the number of operands for the | |
1065 | standard opcode whose value is i. This means that | |
1066 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1067 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1068 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1069 | |
7ba99d21 AT |
1070 | int file_names_size () |
1071 | { return m_file_names.size(); } | |
debd256d JB |
1072 | |
1073 | /* The start and end of the statement program following this | |
6502dd73 | 1074 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1075 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
7ba99d21 AT |
1076 | |
1077 | private: | |
1078 | /* The include_directories table. Note these are observing | |
1079 | pointers. The memory is owned by debug_line_buffer. */ | |
1080 | std::vector<const char *> m_include_dirs; | |
1081 | ||
1082 | /* The file_names table. This is private because the meaning of indexes | |
1083 | differs among DWARF versions (The first valid index is 1 in DWARF 4 and | |
1084 | before, and is 0 in DWARF 5 and later). So the client should use | |
1085 | file_name_at method for access. */ | |
1086 | std::vector<file_entry> m_file_names; | |
debd256d | 1087 | }; |
c906108c | 1088 | |
fff8551c PA |
1089 | typedef std::unique_ptr<line_header> line_header_up; |
1090 | ||
8c43009f PA |
1091 | const char * |
1092 | file_entry::include_dir (const line_header *lh) const | |
1093 | { | |
ecfb656c | 1094 | return lh->include_dir_at (d_index); |
8c43009f PA |
1095 | } |
1096 | ||
c906108c | 1097 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1098 | need this much information. */ |
6f06d47b | 1099 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1100 | { |
6f06d47b YQ |
1101 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1102 | ||
1103 | /* Disable assign but still keep copy ctor, which is needed | |
1104 | load_partial_dies. */ | |
1105 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1106 | ||
52356b79 YQ |
1107 | /* Adjust the partial die before generating a symbol for it. This |
1108 | function may set the is_external flag or change the DIE's | |
1109 | name. */ | |
1110 | void fixup (struct dwarf2_cu *cu); | |
1111 | ||
48fbe735 YQ |
1112 | /* Read a minimal amount of information into the minimal die |
1113 | structure. */ | |
1114 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1115 | const struct abbrev_info &abbrev, | |
1116 | const gdb_byte *info_ptr); | |
1117 | ||
72bf9492 | 1118 | /* Offset of this DIE. */ |
6f06d47b | 1119 | const sect_offset sect_off; |
72bf9492 DJ |
1120 | |
1121 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1122 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1123 | |
72bf9492 | 1124 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1125 | const unsigned int has_children : 1; |
1126 | ||
72bf9492 DJ |
1127 | unsigned int is_external : 1; |
1128 | unsigned int is_declaration : 1; | |
1129 | unsigned int has_type : 1; | |
1130 | unsigned int has_specification : 1; | |
1131 | unsigned int has_pc_info : 1; | |
481860b3 | 1132 | unsigned int may_be_inlined : 1; |
72bf9492 | 1133 | |
0c1b455e TT |
1134 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1135 | unsigned int main_subprogram : 1; | |
1136 | ||
72bf9492 DJ |
1137 | /* Flag set if the SCOPE field of this structure has been |
1138 | computed. */ | |
1139 | unsigned int scope_set : 1; | |
1140 | ||
fa4028e9 JB |
1141 | /* Flag set if the DIE has a byte_size attribute. */ |
1142 | unsigned int has_byte_size : 1; | |
1143 | ||
ff908ebf AW |
1144 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1145 | unsigned int has_const_value : 1; | |
1146 | ||
98bfdba5 PA |
1147 | /* Flag set if any of the DIE's children are template arguments. */ |
1148 | unsigned int has_template_arguments : 1; | |
1149 | ||
52356b79 | 1150 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1151 | unsigned int fixup_called : 1; |
1152 | ||
36586728 TT |
1153 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1154 | unsigned int is_dwz : 1; | |
1155 | ||
1156 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1157 | unsigned int spec_is_dwz : 1; | |
1158 | ||
72bf9492 | 1159 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1160 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1161 | const char *name = nullptr; |
72bf9492 | 1162 | |
abc72ce4 | 1163 | /* The linkage name, if present. */ |
6f06d47b | 1164 | const char *linkage_name = nullptr; |
abc72ce4 | 1165 | |
72bf9492 DJ |
1166 | /* The scope to prepend to our children. This is generally |
1167 | allocated on the comp_unit_obstack, so will disappear | |
1168 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1169 | const char *scope = nullptr; |
72bf9492 | 1170 | |
95554aad TT |
1171 | /* Some data associated with the partial DIE. The tag determines |
1172 | which field is live. */ | |
1173 | union | |
1174 | { | |
1175 | /* The location description associated with this DIE, if any. */ | |
1176 | struct dwarf_block *locdesc; | |
1177 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1178 | sect_offset sect_off; |
6f06d47b | 1179 | } d {}; |
72bf9492 DJ |
1180 | |
1181 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1182 | CORE_ADDR lowpc = 0; |
1183 | CORE_ADDR highpc = 0; | |
72bf9492 | 1184 | |
93311388 | 1185 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1186 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1187 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1188 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1189 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1190 | |
1191 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1192 | DW_AT_specification (or DW_AT_abstract_origin or | |
1193 | DW_AT_extension). */ | |
6f06d47b | 1194 | sect_offset spec_offset {}; |
72bf9492 DJ |
1195 | |
1196 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1197 | if any. */ | |
6f06d47b YQ |
1198 | struct partial_die_info *die_parent = nullptr; |
1199 | struct partial_die_info *die_child = nullptr; | |
1200 | struct partial_die_info *die_sibling = nullptr; | |
1201 | ||
1202 | friend struct partial_die_info * | |
1203 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1204 | ||
1205 | private: | |
1206 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1207 | partial_die_info (sect_offset sect_off) | |
1208 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1209 | { | |
1210 | } | |
1211 | ||
1212 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1213 | int has_children_) | |
1214 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1215 | { | |
1216 | is_external = 0; | |
1217 | is_declaration = 0; | |
1218 | has_type = 0; | |
1219 | has_specification = 0; | |
1220 | has_pc_info = 0; | |
1221 | may_be_inlined = 0; | |
1222 | main_subprogram = 0; | |
1223 | scope_set = 0; | |
1224 | has_byte_size = 0; | |
1225 | has_const_value = 0; | |
1226 | has_template_arguments = 0; | |
1227 | fixup_called = 0; | |
1228 | is_dwz = 0; | |
1229 | spec_is_dwz = 0; | |
1230 | } | |
c906108c SS |
1231 | }; |
1232 | ||
0963b4bd | 1233 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1234 | struct die_info |
1235 | { | |
76815b17 DE |
1236 | /* DWARF-2 tag for this DIE. */ |
1237 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1238 | ||
1239 | /* Number of attributes */ | |
98bfdba5 PA |
1240 | unsigned char num_attrs; |
1241 | ||
1242 | /* True if we're presently building the full type name for the | |
1243 | type derived from this DIE. */ | |
1244 | unsigned char building_fullname : 1; | |
76815b17 | 1245 | |
adde2bff DE |
1246 | /* True if this die is in process. PR 16581. */ |
1247 | unsigned char in_process : 1; | |
1248 | ||
3e225074 TT |
1249 | /* True if this DIE has children. */ |
1250 | unsigned char has_children : 1; | |
1251 | ||
76815b17 DE |
1252 | /* Abbrev number */ |
1253 | unsigned int abbrev; | |
1254 | ||
93311388 | 1255 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1256 | sect_offset sect_off; |
78ba4af6 JB |
1257 | |
1258 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1259 | points to this die's parent; CHILD points to the first child of | |
1260 | this node; and all the children of a given node are chained | |
4950bc1c | 1261 | together via their SIBLING fields. */ |
639d11d3 DC |
1262 | struct die_info *child; /* Its first child, if any. */ |
1263 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1264 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1265 | |
b60c80d6 DJ |
1266 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1267 | zero, but it's not common and zero-sized arrays are not | |
1268 | sufficiently portable C. */ | |
1269 | struct attribute attrs[1]; | |
c906108c SS |
1270 | }; |
1271 | ||
c906108c SS |
1272 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1273 | but this would require a corresponding change in unpack_field_as_long | |
1274 | and friends. */ | |
1275 | static int bits_per_byte = 8; | |
1276 | ||
2ddeaf8a TT |
1277 | /* When reading a variant or variant part, we track a bit more |
1278 | information about the field, and store it in an object of this | |
1279 | type. */ | |
1280 | ||
1281 | struct variant_field | |
1282 | { | |
1283 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1284 | value. */ | |
1285 | ULONGEST discriminant_value; | |
1286 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1287 | default branch. */ | |
1288 | bool default_branch; | |
1289 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1290 | field is the discriminant. */ | |
1291 | bool is_discriminant; | |
1292 | }; | |
1293 | ||
52059ffd TT |
1294 | struct nextfield |
1295 | { | |
be2daae6 TT |
1296 | int accessibility = 0; |
1297 | int virtuality = 0; | |
2ddeaf8a | 1298 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1299 | struct variant_field variant {}; |
1300 | struct field field {}; | |
52059ffd TT |
1301 | }; |
1302 | ||
1303 | struct fnfieldlist | |
1304 | { | |
be2daae6 TT |
1305 | const char *name = nullptr; |
1306 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1307 | }; |
1308 | ||
c906108c SS |
1309 | /* The routines that read and process dies for a C struct or C++ class |
1310 | pass lists of data member fields and lists of member function fields | |
1311 | in an instance of a field_info structure, as defined below. */ | |
1312 | struct field_info | |
c5aa993b | 1313 | { |
0963b4bd | 1314 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1315 | std::vector<struct nextfield> fields; |
1316 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1317 | |
7d0ccb61 | 1318 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1319 | int nfields = 0; |
c906108c | 1320 | |
85102364 | 1321 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1322 | int non_public_fields = 0; |
c906108c | 1323 | |
c5aa993b JM |
1324 | /* Member function fieldlist array, contains name of possibly overloaded |
1325 | member function, number of overloaded member functions and a pointer | |
1326 | to the head of the member function field chain. */ | |
be2daae6 | 1327 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1328 | |
1329 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1330 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1331 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1332 | |
1333 | /* Nested types defined by this class and the number of elements in this | |
1334 | list. */ | |
be2daae6 | 1335 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1336 | }; |
c906108c | 1337 | |
ae038cb0 DJ |
1338 | /* Loaded secondary compilation units are kept in memory until they |
1339 | have not been referenced for the processing of this many | |
1340 | compilation units. Set this to zero to disable caching. Cache | |
1341 | sizes of up to at least twenty will improve startup time for | |
1342 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1343 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1344 | static void |
b4f54984 DE |
1345 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1346 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1347 | { |
3e43a32a | 1348 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1349 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1350 | value); |
1351 | } | |
4390d890 | 1352 | \f |
c906108c SS |
1353 | /* local function prototypes */ |
1354 | ||
918dd910 JK |
1355 | static void dwarf2_find_base_address (struct die_info *die, |
1356 | struct dwarf2_cu *cu); | |
1357 | ||
891813be | 1358 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1359 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1360 | ||
f1902523 JK |
1361 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1362 | const gdb_byte *info_ptr, | |
3e225074 | 1363 | struct die_info *type_unit_die); |
f1902523 | 1364 | |
ed2dc618 SM |
1365 | static void dwarf2_build_psymtabs_hard |
1366 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1367 | |
72bf9492 DJ |
1368 | static void scan_partial_symbols (struct partial_die_info *, |
1369 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1370 | int, struct dwarf2_cu *); |
c906108c | 1371 | |
72bf9492 DJ |
1372 | static void add_partial_symbol (struct partial_die_info *, |
1373 | struct dwarf2_cu *); | |
63d06c5c | 1374 | |
72bf9492 DJ |
1375 | static void add_partial_namespace (struct partial_die_info *pdi, |
1376 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1377 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1378 | |
5d7cb8df | 1379 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1380 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1381 | struct dwarf2_cu *cu); |
1382 | ||
72bf9492 DJ |
1383 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1384 | struct dwarf2_cu *cu); | |
91c24f0a | 1385 | |
bc30ff58 JB |
1386 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1387 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1388 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1389 | |
d521ce57 | 1390 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1391 | |
dee91e82 | 1392 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1393 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1394 | |
fb816e8b TV |
1395 | /* A pair of partial_die_info and compilation unit. */ |
1396 | struct cu_partial_die_info | |
1397 | { | |
1398 | /* The compilation unit of the partial_die_info. */ | |
1399 | struct dwarf2_cu *cu; | |
1400 | /* A partial_die_info. */ | |
1401 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1402 | |
1403 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1404 | : cu (cu), | |
1405 | pdi (pdi) | |
405feb71 | 1406 | { /* Nothing. */ } |
122cf0f2 AB |
1407 | |
1408 | private: | |
1409 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1410 | }; |
1411 | ||
122cf0f2 AB |
1412 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1413 | struct dwarf2_cu *); | |
72bf9492 | 1414 | |
d521ce57 TT |
1415 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1416 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1417 | const gdb_byte *, bool *need_reprocess); |
1418 | ||
1419 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1420 | struct attribute *attr); | |
1421 | ||
1422 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1423 | |
d521ce57 | 1424 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1425 | unsigned int *); |
c906108c | 1426 | |
d521ce57 | 1427 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1428 | |
1429 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1430 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1431 | unsigned int *, unsigned int *); |
613e1657 | 1432 | |
d521ce57 TT |
1433 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1434 | const struct comp_unit_head *, | |
c764a876 DE |
1435 | unsigned int *); |
1436 | ||
d521ce57 | 1437 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1438 | |
ed2dc618 SM |
1439 | static sect_offset read_abbrev_offset |
1440 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1441 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1442 | |
d521ce57 | 1443 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1444 | |
d521ce57 | 1445 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1446 | |
ed2dc618 SM |
1447 | static const char *read_indirect_string |
1448 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1449 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1450 | |
ed2dc618 SM |
1451 | static const char *read_indirect_line_string |
1452 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1453 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1454 | |
ed2dc618 SM |
1455 | static const char *read_indirect_string_at_offset |
1456 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1457 | LONGEST str_offset); | |
927aa2e7 | 1458 | |
ed2dc618 SM |
1459 | static const char *read_indirect_string_from_dwz |
1460 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1461 | |
d521ce57 TT |
1462 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1463 | const gdb_byte *, | |
3019eac3 DE |
1464 | unsigned int *); |
1465 | ||
18a8505e AT |
1466 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1467 | ULONGEST str_index); | |
1468 | ||
1469 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1470 | ULONGEST str_index); | |
3019eac3 | 1471 | |
e142c38c | 1472 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1473 | |
e142c38c DJ |
1474 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1475 | struct dwarf2_cu *); | |
c906108c | 1476 | |
348e048f | 1477 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1478 | unsigned int); |
348e048f | 1479 | |
7d45c7c3 KB |
1480 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1481 | struct dwarf2_cu *cu); | |
1482 | ||
a084a2a6 AT |
1483 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1484 | ||
05cf31d1 JB |
1485 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1486 | struct dwarf2_cu *cu); | |
1487 | ||
e142c38c | 1488 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1489 | |
e142c38c | 1490 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1491 | struct dwarf2_cu **); |
63d06c5c | 1492 | |
9c541725 | 1493 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1494 | struct dwarf2_cu *cu); |
debd256d | 1495 | |
f3f5162e | 1496 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1497 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1498 | CORE_ADDR, int decode_mapping); |
c906108c | 1499 | |
804d2729 TT |
1500 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1501 | const char *); | |
c906108c | 1502 | |
a14ed312 | 1503 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1504 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1505 | |
ff39bb5e | 1506 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1507 | struct dwarf2_cu *); |
c906108c | 1508 | |
ff39bb5e | 1509 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1510 | struct type *type, |
1511 | const char *name, | |
1512 | struct obstack *obstack, | |
12df843f | 1513 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1514 | const gdb_byte **bytes, |
98bfdba5 | 1515 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1516 | |
e7c27a73 | 1517 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1518 | |
b4ba55a1 JB |
1519 | static int need_gnat_info (struct dwarf2_cu *); |
1520 | ||
3e43a32a MS |
1521 | static struct type *die_descriptive_type (struct die_info *, |
1522 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1523 | |
1524 | static void set_descriptive_type (struct type *, struct die_info *, | |
1525 | struct dwarf2_cu *); | |
1526 | ||
e7c27a73 DJ |
1527 | static struct type *die_containing_type (struct die_info *, |
1528 | struct dwarf2_cu *); | |
c906108c | 1529 | |
ff39bb5e | 1530 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1531 | struct dwarf2_cu *); |
c906108c | 1532 | |
f792889a | 1533 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1534 | |
673bfd45 DE |
1535 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1536 | ||
0d5cff50 | 1537 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1538 | |
6e70227d | 1539 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1540 | const char *suffix, int physname, |
1541 | struct dwarf2_cu *cu); | |
63d06c5c | 1542 | |
e7c27a73 | 1543 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1544 | |
348e048f DE |
1545 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1546 | ||
e7c27a73 | 1547 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1548 | |
e7c27a73 | 1549 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1550 | |
96408a79 SA |
1551 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1552 | ||
71a3c369 TT |
1553 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1554 | ||
ff013f42 | 1555 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1556 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1557 | |
3a2b436a | 1558 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1559 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1560 | enum pc_bounds_kind |
1561 | { | |
e385593e | 1562 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1563 | PC_BOUNDS_NOT_PRESENT, |
1564 | ||
e385593e JK |
1565 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1566 | were present but they do not form a valid range of PC addresses. */ | |
1567 | PC_BOUNDS_INVALID, | |
1568 | ||
3a2b436a JK |
1569 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1570 | PC_BOUNDS_RANGES, | |
1571 | ||
1572 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1573 | PC_BOUNDS_HIGH_LOW, | |
1574 | }; | |
1575 | ||
1576 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1577 | CORE_ADDR *, CORE_ADDR *, | |
1578 | struct dwarf2_cu *, | |
891813be | 1579 | dwarf2_psymtab *); |
c906108c | 1580 | |
fae299cd DC |
1581 | static void get_scope_pc_bounds (struct die_info *, |
1582 | CORE_ADDR *, CORE_ADDR *, | |
1583 | struct dwarf2_cu *); | |
1584 | ||
801e3a5b JB |
1585 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1586 | CORE_ADDR, struct dwarf2_cu *); | |
1587 | ||
a14ed312 | 1588 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1589 | struct dwarf2_cu *); |
c906108c | 1590 | |
a14ed312 | 1591 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1592 | struct type *, struct dwarf2_cu *); |
c906108c | 1593 | |
a14ed312 | 1594 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1595 | struct die_info *, struct type *, |
e7c27a73 | 1596 | struct dwarf2_cu *); |
c906108c | 1597 | |
a14ed312 | 1598 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1599 | struct type *, |
1600 | struct dwarf2_cu *); | |
c906108c | 1601 | |
134d01f1 | 1602 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1603 | |
e7c27a73 | 1604 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1605 | |
e7c27a73 | 1606 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1607 | |
5d7cb8df JK |
1608 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1609 | ||
804d2729 | 1610 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1611 | |
27aa8d6a SW |
1612 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1613 | ||
74921315 KS |
1614 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1615 | ||
f55ee35c JK |
1616 | static struct type *read_module_type (struct die_info *die, |
1617 | struct dwarf2_cu *cu); | |
1618 | ||
38d518c9 | 1619 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1620 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1621 | |
134d01f1 | 1622 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1623 | |
e7c27a73 | 1624 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1625 | |
6e70227d | 1626 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1627 | struct dwarf2_cu *); |
1628 | ||
bf6af496 | 1629 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1630 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1631 | struct die_info *); |
639d11d3 | 1632 | |
dee91e82 | 1633 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1634 | const gdb_byte *info_ptr, |
1635 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1636 | struct die_info *parent); |
1637 | ||
d521ce57 TT |
1638 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1639 | struct die_info **, const gdb_byte *, | |
3e225074 | 1640 | int); |
3019eac3 | 1641 | |
d521ce57 | 1642 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1643 | struct die_info **, const gdb_byte *); |
93311388 | 1644 | |
e7c27a73 | 1645 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1646 | |
15d034d0 TT |
1647 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1648 | struct obstack *); | |
71c25dea | 1649 | |
15d034d0 | 1650 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1651 | |
15d034d0 | 1652 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1653 | struct die_info *die, |
1654 | struct dwarf2_cu *cu); | |
1655 | ||
ca69b9e6 DE |
1656 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1657 | struct dwarf2_cu *cu); | |
1658 | ||
e142c38c | 1659 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1660 | struct dwarf2_cu **); |
9219021c | 1661 | |
f39c6ffd | 1662 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1663 | |
f39c6ffd | 1664 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1665 | |
a084a2a6 AT |
1666 | static const char *dwarf_unit_type_name (int unit_type); |
1667 | ||
f39c6ffd | 1668 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1669 | |
a121b7c1 | 1670 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1671 | |
f39c6ffd | 1672 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1673 | |
f9aca02d | 1674 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1675 | |
d97bc12b DE |
1676 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1677 | ||
1678 | static void dump_die_for_error (struct die_info *); | |
1679 | ||
1680 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1681 | struct die_info *); | |
c906108c | 1682 | |
d97bc12b | 1683 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1684 | |
51545339 | 1685 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1686 | struct dwarf2_cu *); |
c906108c | 1687 | |
ff39bb5e | 1688 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1689 | |
ff39bb5e | 1690 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1691 | |
348e048f | 1692 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1693 | const struct attribute *, |
348e048f DE |
1694 | struct dwarf2_cu **); |
1695 | ||
10b3939b | 1696 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1697 | const struct attribute *, |
f2f0e013 | 1698 | struct dwarf2_cu **); |
c906108c | 1699 | |
348e048f | 1700 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1701 | const struct attribute *, |
348e048f DE |
1702 | struct dwarf2_cu **); |
1703 | ||
ac9ec31b DE |
1704 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1705 | struct dwarf2_cu *); | |
1706 | ||
1707 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1708 | const struct attribute *, |
ac9ec31b DE |
1709 | struct dwarf2_cu *); |
1710 | ||
e5fe5e75 | 1711 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1712 | |
52dc124a | 1713 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1714 | |
63e43d3a PMR |
1715 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1716 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1717 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1718 | |
c906108c SS |
1719 | /* memory allocation interface */ |
1720 | ||
7b5a2f43 | 1721 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1722 | |
b60c80d6 | 1723 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1724 | |
43f3e411 | 1725 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1726 | |
8cf6f0b1 TT |
1727 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1728 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1729 | const struct attribute *attr); |
8cf6f0b1 | 1730 | |
ff39bb5e | 1731 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1732 | struct symbol *sym, |
f1e6e072 TT |
1733 | struct dwarf2_cu *cu, |
1734 | int is_block); | |
4c2df51b | 1735 | |
d521ce57 TT |
1736 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1737 | const gdb_byte *info_ptr, | |
1738 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1739 | |
72bf9492 DJ |
1740 | static hashval_t partial_die_hash (const void *item); |
1741 | ||
1742 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1743 | ||
ae038cb0 | 1744 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1745 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1746 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1747 | |
9816fde3 | 1748 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1749 | struct die_info *comp_unit_die, |
1750 | enum language pretend_language); | |
93311388 | 1751 | |
ed2dc618 | 1752 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1753 | |
dee91e82 | 1754 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1755 | |
f792889a DJ |
1756 | static struct type *set_die_type (struct die_info *, struct type *, |
1757 | struct dwarf2_cu *); | |
1c379e20 | 1758 | |
ed2dc618 | 1759 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1760 | |
ed2dc618 | 1761 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1762 | |
58f0c718 | 1763 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1764 | enum language); |
10b3939b | 1765 | |
95554aad TT |
1766 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1767 | enum language); | |
10b3939b | 1768 | |
f4dc4d17 DE |
1769 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1770 | enum language); | |
1771 | ||
10b3939b DJ |
1772 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1773 | struct dwarf2_per_cu_data *); | |
1774 | ||
ae038cb0 DJ |
1775 | static void dwarf2_mark (struct dwarf2_cu *); |
1776 | ||
1777 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1778 | ||
b64f50a1 | 1779 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1780 | struct dwarf2_per_cu_data *); |
673bfd45 | 1781 | |
f792889a | 1782 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1783 | |
95554aad TT |
1784 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1785 | enum language pretend_language); | |
1786 | ||
ed2dc618 | 1787 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1788 | |
9a49df9d AB |
1789 | static struct type *dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu); |
1790 | static struct type *dwarf2_per_cu_addr_sized_int_type | |
1791 | (struct dwarf2_per_cu_data *per_cu, bool unsigned_p); | |
11a8b164 AB |
1792 | static struct type *dwarf2_per_cu_int_type |
1793 | (struct dwarf2_per_cu_data *per_cu, int size_in_bytes, | |
1794 | bool unsigned_p); | |
9a49df9d | 1795 | |
b303c6f6 AB |
1796 | /* Class, the destructor of which frees all allocated queue entries. This |
1797 | will only have work to do if an error was thrown while processing the | |
1798 | dwarf. If no error was thrown then the queue entries should have all | |
1799 | been processed, and freed, as we went along. */ | |
1800 | ||
1801 | class dwarf2_queue_guard | |
1802 | { | |
1803 | public: | |
39856def TT |
1804 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1805 | : m_per_objfile (per_objfile) | |
1806 | { | |
1807 | } | |
b303c6f6 AB |
1808 | |
1809 | /* Free any entries remaining on the queue. There should only be | |
1810 | entries left if we hit an error while processing the dwarf. */ | |
1811 | ~dwarf2_queue_guard () | |
1812 | { | |
39856def TT |
1813 | /* Ensure that no memory is allocated by the queue. */ |
1814 | std::queue<dwarf2_queue_item> empty; | |
1815 | std::swap (m_per_objfile->queue, empty); | |
1816 | } | |
b303c6f6 | 1817 | |
39856def | 1818 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1819 | |
39856def TT |
1820 | private: |
1821 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1822 | }; |
1823 | ||
39856def TT |
1824 | dwarf2_queue_item::~dwarf2_queue_item () |
1825 | { | |
1826 | /* Anything still marked queued is likely to be in an | |
1827 | inconsistent state, so discard it. */ | |
1828 | if (per_cu->queued) | |
1829 | { | |
1830 | if (per_cu->cu != NULL) | |
1831 | free_one_cached_comp_unit (per_cu); | |
1832 | per_cu->queued = 0; | |
1833 | } | |
1834 | } | |
1835 | ||
d721ba37 PA |
1836 | /* The return type of find_file_and_directory. Note, the enclosed |
1837 | string pointers are only valid while this object is valid. */ | |
1838 | ||
1839 | struct file_and_directory | |
1840 | { | |
1841 | /* The filename. This is never NULL. */ | |
1842 | const char *name; | |
1843 | ||
1844 | /* The compilation directory. NULL if not known. If we needed to | |
1845 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1846 | points directly to the DW_AT_comp_dir string attribute owned by | |
1847 | the obstack that owns the DIE. */ | |
1848 | const char *comp_dir; | |
1849 | ||
1850 | /* If we needed to build a new string for comp_dir, this is what | |
1851 | owns the storage. */ | |
1852 | std::string comp_dir_storage; | |
1853 | }; | |
1854 | ||
1855 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1856 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1857 | |
1858 | static char *file_full_name (int file, struct line_header *lh, | |
1859 | const char *comp_dir); | |
1860 | ||
43988095 JK |
1861 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1862 | enum class rcuh_kind { COMPILE, TYPE }; | |
1863 | ||
d521ce57 | 1864 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1865 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1866 | struct comp_unit_head *header, | |
36586728 | 1867 | struct dwarf2_section_info *section, |
d521ce57 | 1868 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1869 | rcuh_kind section_kind); |
36586728 | 1870 | |
673bfd45 | 1871 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1872 | |
3019eac3 DE |
1873 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1874 | ||
57d63ce2 | 1875 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1876 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1877 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1878 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1879 | |
ed2dc618 SM |
1880 | static struct dwp_file *get_dwp_file |
1881 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1882 | |
3019eac3 | 1883 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1884 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1885 | |
1886 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1887 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1888 | |
89e63ee4 DE |
1889 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1890 | ||
263db9a1 TT |
1891 | /* A unique pointer to a dwo_file. */ |
1892 | ||
51ac9db5 | 1893 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1894 | |
ed2dc618 | 1895 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1896 | |
1b80a9fa | 1897 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1898 | |
1899 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1900 | \f |
1901 | /* Various complaints about symbol reading that don't abort the process. */ | |
1902 | ||
1903 | static void | |
1904 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1905 | { | |
b98664d3 | 1906 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
1907 | } |
1908 | ||
1909 | static void | |
1910 | dwarf2_debug_line_missing_file_complaint (void) | |
1911 | { | |
b98664d3 | 1912 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1913 | } |
1914 | ||
1915 | static void | |
1916 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1917 | { | |
b98664d3 | 1918 | complaint (_(".debug_line section has line " |
4390d890 DE |
1919 | "program sequence without an end")); |
1920 | } | |
1921 | ||
1922 | static void | |
1923 | dwarf2_complex_location_expr_complaint (void) | |
1924 | { | |
b98664d3 | 1925 | complaint (_("location expression too complex")); |
4390d890 DE |
1926 | } |
1927 | ||
1928 | static void | |
1929 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1930 | int arg3) | |
1931 | { | |
b98664d3 | 1932 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1933 | arg1, arg2, arg3); |
1934 | } | |
1935 | ||
1936 | static void | |
1937 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1938 | { | |
b98664d3 | 1939 | complaint (_("debug info runs off end of %s section" |
4390d890 | 1940 | " [in module %s]"), |
96b79293 TT |
1941 | section->get_name (), |
1942 | section->get_file_name ()); | |
4390d890 | 1943 | } |
1b80a9fa | 1944 | |
4390d890 DE |
1945 | static void |
1946 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1947 | { | |
b98664d3 | 1948 | complaint (_("macro debug info contains a " |
4390d890 DE |
1949 | "malformed macro definition:\n`%s'"), |
1950 | arg1); | |
1951 | } | |
1952 | ||
1953 | static void | |
1954 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1955 | { | |
b98664d3 | 1956 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1957 | arg1, arg2); |
1958 | } | |
527f3840 JK |
1959 | |
1960 | /* Hash function for line_header_hash. */ | |
1961 | ||
1962 | static hashval_t | |
1963 | line_header_hash (const struct line_header *ofs) | |
1964 | { | |
9c541725 | 1965 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1966 | } |
1967 | ||
1968 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1969 | ||
1970 | static hashval_t | |
1971 | line_header_hash_voidp (const void *item) | |
1972 | { | |
9a3c8263 | 1973 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1974 | |
1975 | return line_header_hash (ofs); | |
1976 | } | |
1977 | ||
1978 | /* Equality function for line_header_hash. */ | |
1979 | ||
1980 | static int | |
1981 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1982 | { | |
9a3c8263 SM |
1983 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1984 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1985 | |
9c541725 | 1986 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1987 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1988 | } | |
1989 | ||
4390d890 | 1990 | \f |
9291a0cd | 1991 | |
330cdd98 PA |
1992 | /* See declaration. */ |
1993 | ||
1994 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
1995 | const dwarf2_debug_sections *names, |
1996 | bool can_copy_) | |
1997 | : objfile (objfile_), | |
1998 | can_copy (can_copy_) | |
330cdd98 PA |
1999 | { |
2000 | if (names == NULL) | |
2001 | names = &dwarf2_elf_names; | |
2002 | ||
2003 | bfd *obfd = objfile->obfd; | |
2004 | ||
2005 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2006 | locate_sections (obfd, sec, *names); | |
2007 | } | |
2008 | ||
2009 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
2010 | { | |
2011 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2012 | free_cached_comp_units (); | |
2013 | ||
2014 | if (quick_file_names_table) | |
2015 | htab_delete (quick_file_names_table); | |
2016 | ||
2017 | if (line_header_hash) | |
2018 | htab_delete (line_header_hash); | |
2019 | ||
b76e467d | 2020 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 2021 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 2022 | |
b2bdb8cf | 2023 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 2024 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 2025 | |
330cdd98 PA |
2026 | /* Everything else should be on the objfile obstack. */ |
2027 | } | |
2028 | ||
2029 | /* See declaration. */ | |
2030 | ||
2031 | void | |
2032 | dwarf2_per_objfile::free_cached_comp_units () | |
2033 | { | |
2034 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2035 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2036 | while (per_cu != NULL) | |
2037 | { | |
2038 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2039 | ||
fcd3b13d | 2040 | delete per_cu->cu; |
330cdd98 PA |
2041 | *last_chain = next_cu; |
2042 | per_cu = next_cu; | |
2043 | } | |
2044 | } | |
2045 | ||
11ed8cad TT |
2046 | /* A helper class that calls free_cached_comp_units on |
2047 | destruction. */ | |
2048 | ||
2049 | class free_cached_comp_units | |
2050 | { | |
2051 | public: | |
2052 | ||
2053 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2054 | : m_per_objfile (per_objfile) | |
2055 | { | |
2056 | } | |
2057 | ||
2058 | ~free_cached_comp_units () | |
2059 | { | |
2060 | m_per_objfile->free_cached_comp_units (); | |
2061 | } | |
2062 | ||
2063 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2064 | ||
2065 | private: | |
2066 | ||
2067 | dwarf2_per_objfile *m_per_objfile; | |
2068 | }; | |
2069 | ||
c906108c | 2070 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2071 | information and return true if we have enough to do something. |
2072 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
2073 | ELF names are used. CAN_COPY is true for formats where symbol |
2074 | interposition is possible and so symbol values must follow copy | |
2075 | relocation rules. */ | |
c906108c SS |
2076 | |
2077 | int | |
251d32d9 | 2078 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
2079 | const struct dwarf2_debug_sections *names, |
2080 | bool can_copy) | |
c906108c | 2081 | { |
97cbe998 SDJ |
2082 | if (objfile->flags & OBJF_READNEVER) |
2083 | return 0; | |
2084 | ||
ed2dc618 SM |
2085 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2086 | = get_dwarf2_per_objfile (objfile); | |
2087 | ||
2088 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 2089 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
2090 | names, |
2091 | can_copy); | |
5bfd760d | 2092 | |
73869dc2 | 2093 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2094 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2095 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2096 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2097 | } |
2098 | ||
251d32d9 TG |
2099 | /* When loading sections, we look either for uncompressed section or for |
2100 | compressed section names. */ | |
233a11ab CS |
2101 | |
2102 | static int | |
251d32d9 TG |
2103 | section_is_p (const char *section_name, |
2104 | const struct dwarf2_section_names *names) | |
233a11ab | 2105 | { |
251d32d9 TG |
2106 | if (names->normal != NULL |
2107 | && strcmp (section_name, names->normal) == 0) | |
2108 | return 1; | |
2109 | if (names->compressed != NULL | |
2110 | && strcmp (section_name, names->compressed) == 0) | |
2111 | return 1; | |
2112 | return 0; | |
233a11ab CS |
2113 | } |
2114 | ||
330cdd98 | 2115 | /* See declaration. */ |
c906108c | 2116 | |
330cdd98 PA |
2117 | void |
2118 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2119 | const dwarf2_debug_sections &names) | |
c906108c | 2120 | { |
fd361982 | 2121 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 2122 | |
dc7650b8 JK |
2123 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2124 | { | |
2125 | } | |
950b7495 KS |
2126 | else if (elf_section_data (sectp)->this_hdr.sh_size |
2127 | > bfd_get_file_size (abfd)) | |
2128 | { | |
2129 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
2130 | warning (_("Discarding section %s which has a section size (%s" | |
2131 | ") larger than the file size [in module %s]"), | |
2132 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2133 | bfd_get_filename (abfd)); | |
2134 | } | |
330cdd98 | 2135 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2136 | { |
330cdd98 | 2137 | this->info.s.section = sectp; |
fd361982 | 2138 | this->info.size = bfd_section_size (sectp); |
c906108c | 2139 | } |
330cdd98 | 2140 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2141 | { |
330cdd98 | 2142 | this->abbrev.s.section = sectp; |
fd361982 | 2143 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2144 | } |
330cdd98 | 2145 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2146 | { |
330cdd98 | 2147 | this->line.s.section = sectp; |
fd361982 | 2148 | this->line.size = bfd_section_size (sectp); |
c906108c | 2149 | } |
330cdd98 | 2150 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2151 | { |
330cdd98 | 2152 | this->loc.s.section = sectp; |
fd361982 | 2153 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2154 | } |
330cdd98 | 2155 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2156 | { |
330cdd98 | 2157 | this->loclists.s.section = sectp; |
fd361982 | 2158 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2159 | } |
330cdd98 | 2160 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2161 | { |
330cdd98 | 2162 | this->macinfo.s.section = sectp; |
fd361982 | 2163 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2164 | } |
330cdd98 | 2165 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2166 | { |
330cdd98 | 2167 | this->macro.s.section = sectp; |
fd361982 | 2168 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2169 | } |
330cdd98 | 2170 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2171 | { |
330cdd98 | 2172 | this->str.s.section = sectp; |
fd361982 | 2173 | this->str.size = bfd_section_size (sectp); |
c906108c | 2174 | } |
18a8505e AT |
2175 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2176 | { | |
2177 | this->str_offsets.s.section = sectp; | |
2178 | this->str_offsets.size = bfd_section_size (sectp); | |
2179 | } | |
330cdd98 | 2180 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2181 | { |
330cdd98 | 2182 | this->line_str.s.section = sectp; |
fd361982 | 2183 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2184 | } |
330cdd98 | 2185 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2186 | { |
330cdd98 | 2187 | this->addr.s.section = sectp; |
fd361982 | 2188 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2189 | } |
330cdd98 | 2190 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2191 | { |
330cdd98 | 2192 | this->frame.s.section = sectp; |
fd361982 | 2193 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2194 | } |
330cdd98 | 2195 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2196 | { |
330cdd98 | 2197 | this->eh_frame.s.section = sectp; |
fd361982 | 2198 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2199 | } |
330cdd98 | 2200 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2201 | { |
330cdd98 | 2202 | this->ranges.s.section = sectp; |
fd361982 | 2203 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2204 | } |
330cdd98 | 2205 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2206 | { |
330cdd98 | 2207 | this->rnglists.s.section = sectp; |
fd361982 | 2208 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2209 | } |
330cdd98 | 2210 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2211 | { |
8b70b953 TT |
2212 | struct dwarf2_section_info type_section; |
2213 | ||
2214 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2215 | type_section.s.section = sectp; |
fd361982 | 2216 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2217 | |
fd5866f6 | 2218 | this->types.push_back (type_section); |
348e048f | 2219 | } |
330cdd98 | 2220 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2221 | { |
330cdd98 | 2222 | this->gdb_index.s.section = sectp; |
fd361982 | 2223 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2224 | } |
927aa2e7 JK |
2225 | else if (section_is_p (sectp->name, &names.debug_names)) |
2226 | { | |
2227 | this->debug_names.s.section = sectp; | |
fd361982 | 2228 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2229 | } |
2230 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2231 | { | |
2232 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2233 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2234 | } |
dce234bc | 2235 | |
fd361982 AM |
2236 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2237 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2238 | this->has_section_at_zero = true; |
c906108c SS |
2239 | } |
2240 | ||
9e0ac564 TT |
2241 | /* A helper function that returns the size of a section in a safe way. |
2242 | If you are positive that the section has been read before using the | |
2243 | size, then it is safe to refer to the dwarf2_section_info object's | |
2244 | "size" field directly. In other cases, you must call this | |
2245 | function, because for compressed sections the size field is not set | |
2246 | correctly until the section has been read. */ | |
2247 | ||
2248 | static bfd_size_type | |
2249 | dwarf2_section_size (struct objfile *objfile, | |
2250 | struct dwarf2_section_info *info) | |
2251 | { | |
2252 | if (!info->readin) | |
96b79293 | 2253 | info->read (objfile); |
9e0ac564 TT |
2254 | return info->size; |
2255 | } | |
2256 | ||
dce234bc | 2257 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2258 | SECTION_NAME. */ |
af34e669 | 2259 | |
dce234bc | 2260 | void |
3017a003 TG |
2261 | dwarf2_get_section_info (struct objfile *objfile, |
2262 | enum dwarf2_section_enum sect, | |
d521ce57 | 2263 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2264 | bfd_size_type *sizep) |
2265 | { | |
5bfd760d | 2266 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2267 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2268 | |
2269 | /* We may see an objfile without any DWARF, in which case we just | |
2270 | return nothing. */ | |
2271 | if (data == NULL) | |
2272 | { | |
2273 | *sectp = NULL; | |
2274 | *bufp = NULL; | |
2275 | *sizep = 0; | |
2276 | return; | |
2277 | } | |
3017a003 TG |
2278 | switch (sect) |
2279 | { | |
2280 | case DWARF2_DEBUG_FRAME: | |
2281 | info = &data->frame; | |
2282 | break; | |
2283 | case DWARF2_EH_FRAME: | |
2284 | info = &data->eh_frame; | |
2285 | break; | |
2286 | default: | |
2287 | gdb_assert_not_reached ("unexpected section"); | |
2288 | } | |
dce234bc | 2289 | |
96b79293 | 2290 | info->read (objfile); |
dce234bc | 2291 | |
96b79293 | 2292 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2293 | *bufp = info->buffer; |
2294 | *sizep = info->size; | |
2295 | } | |
2296 | ||
36586728 TT |
2297 | /* A helper function to find the sections for a .dwz file. */ |
2298 | ||
2299 | static void | |
2300 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2301 | { | |
9a3c8263 | 2302 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2303 | |
2304 | /* Note that we only support the standard ELF names, because .dwz | |
2305 | is ELF-only (at the time of writing). */ | |
2306 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2307 | { | |
049412e3 | 2308 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2309 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2310 | } |
2311 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2312 | { | |
049412e3 | 2313 | dwz_file->info.s.section = sectp; |
fd361982 | 2314 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2315 | } |
2316 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2317 | { | |
049412e3 | 2318 | dwz_file->str.s.section = sectp; |
fd361982 | 2319 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2320 | } |
2321 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2322 | { | |
049412e3 | 2323 | dwz_file->line.s.section = sectp; |
fd361982 | 2324 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2325 | } |
2326 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2327 | { | |
049412e3 | 2328 | dwz_file->macro.s.section = sectp; |
fd361982 | 2329 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2330 | } |
2ec9a5e0 TT |
2331 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2332 | { | |
049412e3 | 2333 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2334 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2335 | } |
927aa2e7 JK |
2336 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2337 | { | |
2338 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2339 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2340 | } |
36586728 TT |
2341 | } |
2342 | ||
c4973306 | 2343 | /* See dwarf2read.h. */ |
36586728 | 2344 | |
c4973306 | 2345 | struct dwz_file * |
ed2dc618 | 2346 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2347 | { |
36586728 | 2348 | const char *filename; |
acd13123 | 2349 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2350 | size_t buildid_len; |
2351 | bfd_byte *buildid; | |
36586728 TT |
2352 | |
2353 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2354 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2355 | |
4db1a1dc | 2356 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2357 | gdb::unique_xmalloc_ptr<char> data |
2358 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2359 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2360 | if (data == NULL) |
2361 | { | |
2362 | if (bfd_get_error () == bfd_error_no_error) | |
2363 | return NULL; | |
2364 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2365 | bfd_errmsg (bfd_get_error ())); | |
2366 | } | |
791afaa2 TT |
2367 | |
2368 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2369 | |
acd13123 TT |
2370 | buildid_len = (size_t) buildid_len_arg; |
2371 | ||
791afaa2 | 2372 | filename = data.get (); |
d721ba37 PA |
2373 | |
2374 | std::string abs_storage; | |
36586728 TT |
2375 | if (!IS_ABSOLUTE_PATH (filename)) |
2376 | { | |
14278e1f TT |
2377 | gdb::unique_xmalloc_ptr<char> abs |
2378 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2379 | |
14278e1f | 2380 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2381 | filename = abs_storage.c_str (); |
36586728 TT |
2382 | } |
2383 | ||
dc294be5 TT |
2384 | /* First try the file name given in the section. If that doesn't |
2385 | work, try to use the build-id instead. */ | |
192b62ce | 2386 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2387 | if (dwz_bfd != NULL) |
36586728 | 2388 | { |
192b62ce | 2389 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2390 | dwz_bfd.reset (nullptr); |
36586728 TT |
2391 | } |
2392 | ||
dc294be5 TT |
2393 | if (dwz_bfd == NULL) |
2394 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2395 | ||
2396 | if (dwz_bfd == NULL) | |
2397 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2398 | objfile_name (dwarf2_per_objfile->objfile)); | |
2399 | ||
7ff8cb8c TT |
2400 | std::unique_ptr<struct dwz_file> result |
2401 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2402 | |
7ff8cb8c TT |
2403 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2404 | result.get ()); | |
36586728 | 2405 | |
7ff8cb8c TT |
2406 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2407 | result->dwz_bfd.get ()); | |
2408 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2409 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2410 | } |
9291a0cd | 2411 | \f |
7b9f3c50 DE |
2412 | /* DWARF quick_symbols_functions support. */ |
2413 | ||
2414 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2415 | unique line tables, so we maintain a separate table of all .debug_line | |
2416 | derived entries to support the sharing. | |
2417 | All the quick functions need is the list of file names. We discard the | |
2418 | line_header when we're done and don't need to record it here. */ | |
2419 | struct quick_file_names | |
2420 | { | |
094b34ac DE |
2421 | /* The data used to construct the hash key. */ |
2422 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2423 | |
2424 | /* The number of entries in file_names, real_names. */ | |
2425 | unsigned int num_file_names; | |
2426 | ||
2427 | /* The file names from the line table, after being run through | |
2428 | file_full_name. */ | |
2429 | const char **file_names; | |
2430 | ||
2431 | /* The file names from the line table after being run through | |
2432 | gdb_realpath. These are computed lazily. */ | |
2433 | const char **real_names; | |
2434 | }; | |
2435 | ||
2436 | /* When using the index (and thus not using psymtabs), each CU has an | |
2437 | object of this type. This is used to hold information needed by | |
2438 | the various "quick" methods. */ | |
2439 | struct dwarf2_per_cu_quick_data | |
2440 | { | |
2441 | /* The file table. This can be NULL if there was no file table | |
2442 | or it's currently not read in. | |
2443 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2444 | struct quick_file_names *file_names; | |
2445 | ||
2446 | /* The corresponding symbol table. This is NULL if symbols for this | |
2447 | CU have not yet been read. */ | |
43f3e411 | 2448 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2449 | |
2450 | /* A temporary mark bit used when iterating over all CUs in | |
2451 | expand_symtabs_matching. */ | |
2452 | unsigned int mark : 1; | |
2453 | ||
2454 | /* True if we've tried to read the file table and found there isn't one. | |
2455 | There will be no point in trying to read it again next time. */ | |
2456 | unsigned int no_file_data : 1; | |
2457 | }; | |
2458 | ||
094b34ac DE |
2459 | /* Utility hash function for a stmt_list_hash. */ |
2460 | ||
2461 | static hashval_t | |
2462 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2463 | { | |
2464 | hashval_t v = 0; | |
2465 | ||
2466 | if (stmt_list_hash->dwo_unit != NULL) | |
2467 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2468 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2469 | return v; |
2470 | } | |
2471 | ||
2472 | /* Utility equality function for a stmt_list_hash. */ | |
2473 | ||
2474 | static int | |
2475 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2476 | const struct stmt_list_hash *rhs) | |
2477 | { | |
2478 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2479 | return 0; | |
2480 | if (lhs->dwo_unit != NULL | |
2481 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2482 | return 0; | |
2483 | ||
9c541725 | 2484 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2485 | } |
2486 | ||
7b9f3c50 DE |
2487 | /* Hash function for a quick_file_names. */ |
2488 | ||
2489 | static hashval_t | |
2490 | hash_file_name_entry (const void *e) | |
2491 | { | |
9a3c8263 SM |
2492 | const struct quick_file_names *file_data |
2493 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2494 | |
094b34ac | 2495 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2496 | } |
2497 | ||
2498 | /* Equality function for a quick_file_names. */ | |
2499 | ||
2500 | static int | |
2501 | eq_file_name_entry (const void *a, const void *b) | |
2502 | { | |
9a3c8263 SM |
2503 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2504 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2505 | |
094b34ac | 2506 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2507 | } |
2508 | ||
2509 | /* Delete function for a quick_file_names. */ | |
2510 | ||
2511 | static void | |
2512 | delete_file_name_entry (void *e) | |
2513 | { | |
9a3c8263 | 2514 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2515 | int i; |
2516 | ||
2517 | for (i = 0; i < file_data->num_file_names; ++i) | |
2518 | { | |
2519 | xfree ((void*) file_data->file_names[i]); | |
2520 | if (file_data->real_names) | |
2521 | xfree ((void*) file_data->real_names[i]); | |
2522 | } | |
2523 | ||
2524 | /* The space for the struct itself lives on objfile_obstack, | |
2525 | so we don't free it here. */ | |
2526 | } | |
2527 | ||
2528 | /* Create a quick_file_names hash table. */ | |
2529 | ||
2530 | static htab_t | |
2531 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2532 | { | |
2533 | return htab_create_alloc (nr_initial_entries, | |
2534 | hash_file_name_entry, eq_file_name_entry, | |
2535 | delete_file_name_entry, xcalloc, xfree); | |
2536 | } | |
9291a0cd | 2537 | |
918dd910 JK |
2538 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2539 | have to be created afterwards. You should call age_cached_comp_units after | |
2540 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2541 | ||
2542 | static void | |
58f0c718 | 2543 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2544 | { |
3019eac3 | 2545 | if (per_cu->is_debug_types) |
e5fe5e75 | 2546 | load_full_type_unit (per_cu); |
918dd910 | 2547 | else |
58f0c718 | 2548 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2549 | |
cc12ce38 DE |
2550 | if (per_cu->cu == NULL) |
2551 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2552 | |
2553 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2554 | } |
2555 | ||
a0f42c21 | 2556 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2557 | |
9291a0cd | 2558 | static void |
58f0c718 | 2559 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2560 | { |
ed2dc618 | 2561 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2562 | |
f4dc4d17 DE |
2563 | /* Skip type_unit_groups, reading the type units they contain |
2564 | is handled elsewhere. */ | |
2565 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2566 | return; | |
2567 | ||
b303c6f6 AB |
2568 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2569 | the queue. After this point we're guaranteed to leave this function | |
2570 | with the dwarf queue empty. */ | |
39856def | 2571 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2572 | |
95554aad | 2573 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2574 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2575 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2576 | { | |
2577 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2578 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2579 | |
2580 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2581 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2582 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2583 | if (!per_cu->is_debug_types | |
cc12ce38 | 2584 | && per_cu->cu != NULL |
89e63ee4 DE |
2585 | && per_cu->cu->dwo_unit != NULL |
2586 | && dwarf2_per_objfile->index_table != NULL | |
2587 | && dwarf2_per_objfile->index_table->version <= 7 | |
2588 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2589 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2590 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2591 | } |
9291a0cd | 2592 | |
ed2dc618 | 2593 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2594 | |
2595 | /* Age the cache, releasing compilation units that have not | |
2596 | been used recently. */ | |
ed2dc618 | 2597 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2598 | } |
2599 | ||
2600 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2601 | the objfile from which this CU came. Returns the resulting symbol | |
2602 | table. */ | |
2fdf6df6 | 2603 | |
43f3e411 | 2604 | static struct compunit_symtab * |
58f0c718 | 2605 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2606 | { |
ed2dc618 SM |
2607 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2608 | ||
95554aad | 2609 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2610 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2611 | { |
11ed8cad | 2612 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2613 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2614 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2615 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2616 | } |
f194fefb | 2617 | |
43f3e411 | 2618 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2619 | } |
2620 | ||
ff4c9fec | 2621 | /* See declaration. */ |
f4dc4d17 | 2622 | |
ff4c9fec SM |
2623 | dwarf2_per_cu_data * |
2624 | dwarf2_per_objfile::get_cutu (int index) | |
2625 | { | |
b76e467d | 2626 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2627 | { |
b76e467d | 2628 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2629 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2630 | return &this->all_type_units[index]->per_cu; |
2631 | } | |
f4dc4d17 | 2632 | |
ff4c9fec SM |
2633 | return this->all_comp_units[index]; |
2634 | } | |
f4dc4d17 | 2635 | |
ff4c9fec | 2636 | /* See declaration. */ |
2fdf6df6 | 2637 | |
ff4c9fec SM |
2638 | dwarf2_per_cu_data * |
2639 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2640 | { |
b76e467d | 2641 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2642 | |
ff4c9fec | 2643 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2644 | } |
2645 | ||
ff4c9fec | 2646 | /* See declaration. */ |
f4dc4d17 | 2647 | |
ff4c9fec SM |
2648 | signatured_type * |
2649 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2650 | { |
b2bdb8cf | 2651 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2652 | |
ff4c9fec | 2653 | return this->all_type_units[index]; |
1fd400ff TT |
2654 | } |
2655 | ||
4b514bc8 JK |
2656 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2657 | objfile_obstack, and constructed with the specified field | |
2658 | values. */ | |
2659 | ||
2660 | static dwarf2_per_cu_data * | |
ed2dc618 | 2661 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2662 | struct dwarf2_section_info *section, |
2663 | int is_dwz, | |
2664 | sect_offset sect_off, ULONGEST length) | |
2665 | { | |
ed2dc618 | 2666 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2667 | dwarf2_per_cu_data *the_cu |
2668 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2669 | struct dwarf2_per_cu_data); | |
2670 | the_cu->sect_off = sect_off; | |
2671 | the_cu->length = length; | |
e3b94546 | 2672 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2673 | the_cu->section = section; |
2674 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2675 | struct dwarf2_per_cu_quick_data); | |
2676 | the_cu->is_dwz = is_dwz; | |
2677 | return the_cu; | |
2678 | } | |
2679 | ||
2ec9a5e0 TT |
2680 | /* A helper for create_cus_from_index that handles a given list of |
2681 | CUs. */ | |
2fdf6df6 | 2682 | |
74a0d9f6 | 2683 | static void |
12359b5e | 2684 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2685 | const gdb_byte *cu_list, offset_type n_elements, |
2686 | struct dwarf2_section_info *section, | |
b76e467d | 2687 | int is_dwz) |
9291a0cd | 2688 | { |
12359b5e | 2689 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2690 | { |
74a0d9f6 | 2691 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2692 | |
2693 | sect_offset sect_off | |
2694 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2695 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2696 | cu_list += 2 * 8; |
2697 | ||
b76e467d | 2698 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2699 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2700 | sect_off, length); | |
b76e467d | 2701 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2702 | } |
9291a0cd TT |
2703 | } |
2704 | ||
2ec9a5e0 | 2705 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2706 | the CU objects for this objfile. */ |
2ec9a5e0 | 2707 | |
74a0d9f6 | 2708 | static void |
12359b5e | 2709 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2710 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2711 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2712 | { | |
b76e467d SM |
2713 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
2714 | dwarf2_per_objfile->all_comp_units.reserve | |
2715 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2716 | |
12359b5e | 2717 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 2718 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
2719 | |
2720 | if (dwz_elements == 0) | |
74a0d9f6 | 2721 | return; |
2ec9a5e0 | 2722 | |
12359b5e SM |
2723 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
2724 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 2725 | &dwz->info, 1); |
2ec9a5e0 TT |
2726 | } |
2727 | ||
1fd400ff | 2728 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2729 | |
74a0d9f6 | 2730 | static void |
12359b5e SM |
2731 | create_signatured_type_table_from_index |
2732 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2733 | struct dwarf2_section_info *section, | |
2734 | const gdb_byte *bytes, | |
2735 | offset_type elements) | |
1fd400ff | 2736 | { |
12359b5e | 2737 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 2738 | |
b2bdb8cf SM |
2739 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2740 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 2741 | |
12359b5e | 2742 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 2743 | |
12359b5e | 2744 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2745 | { |
52dc124a | 2746 | struct signatured_type *sig_type; |
9c541725 | 2747 | ULONGEST signature; |
1fd400ff | 2748 | void **slot; |
9c541725 | 2749 | cu_offset type_offset_in_tu; |
1fd400ff | 2750 | |
74a0d9f6 | 2751 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2752 | sect_offset sect_off |
2753 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2754 | type_offset_in_tu | |
2755 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2756 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2757 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2758 | bytes += 3 * 8; | |
2759 | ||
52dc124a | 2760 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2761 | struct signatured_type); |
52dc124a | 2762 | sig_type->signature = signature; |
9c541725 | 2763 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2764 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2765 | sig_type->per_cu.section = section; |
9c541725 | 2766 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2767 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2768 | sig_type->per_cu.v.quick |
1fd400ff TT |
2769 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2770 | struct dwarf2_per_cu_quick_data); | |
2771 | ||
52dc124a DE |
2772 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2773 | *slot = sig_type; | |
1fd400ff | 2774 | |
b2bdb8cf | 2775 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
2776 | } |
2777 | ||
673bfd45 | 2778 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2779 | } |
2780 | ||
927aa2e7 JK |
2781 | /* Create the signatured type hash table from .debug_names. */ |
2782 | ||
2783 | static void | |
2784 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2785 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2786 | const mapped_debug_names &map, |
2787 | struct dwarf2_section_info *section, | |
2788 | struct dwarf2_section_info *abbrev_section) | |
2789 | { | |
ed2dc618 SM |
2790 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2791 | ||
96b79293 TT |
2792 | section->read (objfile); |
2793 | abbrev_section->read (objfile); | |
927aa2e7 | 2794 | |
b2bdb8cf SM |
2795 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2796 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
2797 | |
2798 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
2799 | ||
2800 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2801 | { | |
2802 | struct signatured_type *sig_type; | |
927aa2e7 | 2803 | void **slot; |
927aa2e7 JK |
2804 | |
2805 | sect_offset sect_off | |
2806 | = (sect_offset) (extract_unsigned_integer | |
2807 | (map.tu_table_reordered + i * map.offset_size, | |
2808 | map.offset_size, | |
2809 | map.dwarf5_byte_order)); | |
2810 | ||
2811 | comp_unit_head cu_header; | |
ed2dc618 SM |
2812 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2813 | abbrev_section, | |
927aa2e7 JK |
2814 | section->buffer + to_underlying (sect_off), |
2815 | rcuh_kind::TYPE); | |
2816 | ||
2817 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2818 | struct signatured_type); | |
2819 | sig_type->signature = cu_header.signature; | |
2820 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2821 | sig_type->per_cu.is_debug_types = 1; | |
2822 | sig_type->per_cu.section = section; | |
2823 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2824 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
2825 | sig_type->per_cu.v.quick |
2826 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2827 | struct dwarf2_per_cu_quick_data); | |
2828 | ||
2829 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
2830 | *slot = sig_type; | |
2831 | ||
b2bdb8cf | 2832 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2833 | } |
2834 | ||
2835 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
2836 | } | |
2837 | ||
9291a0cd TT |
2838 | /* Read the address map data from the mapped index, and use it to |
2839 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2840 | |
9291a0cd | 2841 | static void |
ed2dc618 SM |
2842 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2843 | struct mapped_index *index) | |
9291a0cd | 2844 | { |
ed2dc618 | 2845 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 2846 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 2847 | const gdb_byte *iter, *end; |
9291a0cd | 2848 | struct addrmap *mutable_map; |
9291a0cd TT |
2849 | CORE_ADDR baseaddr; |
2850 | ||
8268c778 PA |
2851 | auto_obstack temp_obstack; |
2852 | ||
9291a0cd TT |
2853 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2854 | ||
f00a2de2 PA |
2855 | iter = index->address_table.data (); |
2856 | end = iter + index->address_table.size (); | |
9291a0cd | 2857 | |
b3b3bada | 2858 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2859 | |
2860 | while (iter < end) | |
2861 | { | |
2862 | ULONGEST hi, lo, cu_index; | |
2863 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2864 | iter += 8; | |
2865 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2866 | iter += 8; | |
2867 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2868 | iter += 4; | |
f652bce2 | 2869 | |
24a55014 | 2870 | if (lo > hi) |
f652bce2 | 2871 | { |
b98664d3 | 2872 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2873 | hex_string (lo), hex_string (hi)); |
24a55014 | 2874 | continue; |
f652bce2 | 2875 | } |
24a55014 | 2876 | |
b76e467d | 2877 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 2878 | { |
b98664d3 | 2879 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2880 | (unsigned) cu_index); |
24a55014 | 2881 | continue; |
f652bce2 | 2882 | } |
24a55014 | 2883 | |
79748972 TT |
2884 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2885 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2886 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 2887 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
2888 | } |
2889 | ||
d320c2b5 | 2890 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2891 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2892 | } |
2893 | ||
927aa2e7 JK |
2894 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2895 | populate the objfile's psymtabs_addrmap. */ | |
2896 | ||
2897 | static void | |
ed2dc618 | 2898 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2899 | struct dwarf2_section_info *section) |
2900 | { | |
ed2dc618 | 2901 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
2902 | bfd *abfd = objfile->obfd; |
2903 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 2904 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2905 | |
2906 | auto_obstack temp_obstack; | |
2907 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2908 | ||
2909 | std::unordered_map<sect_offset, | |
2910 | dwarf2_per_cu_data *, | |
2911 | gdb::hash_enum<sect_offset>> | |
2912 | debug_info_offset_to_per_cu; | |
b76e467d | 2913 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 2914 | { |
927aa2e7 JK |
2915 | const auto insertpair |
2916 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2917 | if (!insertpair.second) | |
2918 | { | |
2919 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2920 | "debug_info_offset %s, ignoring .debug_aranges."), |
2921 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2922 | return; |
2923 | } | |
2924 | } | |
2925 | ||
96b79293 | 2926 | section->read (objfile); |
927aa2e7 JK |
2927 | |
2928 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2929 | ||
2930 | const gdb_byte *addr = section->buffer; | |
2931 | ||
2932 | while (addr < section->buffer + section->size) | |
2933 | { | |
2934 | const gdb_byte *const entry_addr = addr; | |
2935 | unsigned int bytes_read; | |
2936 | ||
2937 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2938 | &bytes_read); | |
2939 | addr += bytes_read; | |
2940 | ||
2941 | const gdb_byte *const entry_end = addr + entry_length; | |
2942 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2943 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2944 | if (addr + entry_length > section->buffer + section->size) | |
2945 | { | |
47e3f474 | 2946 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2947 | "length %s exceeds section length %s, " |
2948 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2949 | objfile_name (objfile), |
2950 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2951 | plongest (bytes_read + entry_length), |
2952 | pulongest (section->size)); | |
2953 | return; | |
2954 | } | |
2955 | ||
2956 | /* The version number. */ | |
2957 | const uint16_t version = read_2_bytes (abfd, addr); | |
2958 | addr += 2; | |
2959 | if (version != 2) | |
2960 | { | |
47e3f474 | 2961 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2962 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2963 | objfile_name (objfile), |
2964 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2965 | return; |
2966 | } | |
2967 | ||
2968 | const uint64_t debug_info_offset | |
2969 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2970 | addr += offset_size; | |
2971 | const auto per_cu_it | |
2972 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2973 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2974 | { | |
47e3f474 | 2975 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2976 | "debug_info_offset %s does not exists, " |
2977 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2978 | objfile_name (objfile), |
2979 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2980 | pulongest (debug_info_offset)); |
2981 | return; | |
2982 | } | |
2983 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2984 | ||
2985 | const uint8_t address_size = *addr++; | |
2986 | if (address_size < 1 || address_size > 8) | |
2987 | { | |
47e3f474 | 2988 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2989 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2990 | objfile_name (objfile), |
2991 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2992 | return; |
2993 | } | |
2994 | ||
2995 | const uint8_t segment_selector_size = *addr++; | |
2996 | if (segment_selector_size != 0) | |
2997 | { | |
47e3f474 | 2998 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2999 | "segment_selector_size %u is not supported, " |
3000 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3001 | objfile_name (objfile), |
3002 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
3003 | segment_selector_size); |
3004 | return; | |
3005 | } | |
3006 | ||
3007 | /* Must pad to an alignment boundary that is twice the address | |
3008 | size. It is undocumented by the DWARF standard but GCC does | |
3009 | use it. */ | |
3010 | for (size_t padding = ((-(addr - section->buffer)) | |
3011 | & (2 * address_size - 1)); | |
3012 | padding > 0; padding--) | |
3013 | if (*addr++ != 0) | |
3014 | { | |
47e3f474 | 3015 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 3016 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
3017 | objfile_name (objfile), |
3018 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3019 | return; |
3020 | } | |
3021 | ||
3022 | for (;;) | |
3023 | { | |
3024 | if (addr + 2 * address_size > entry_end) | |
3025 | { | |
47e3f474 | 3026 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
3027 | "address list is not properly terminated, " |
3028 | "ignoring .debug_aranges."), | |
47e3f474 TV |
3029 | objfile_name (objfile), |
3030 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
3031 | return; |
3032 | } | |
3033 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3034 | dwarf5_byte_order); | |
3035 | addr += address_size; | |
3036 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3037 | dwarf5_byte_order); | |
3038 | addr += address_size; | |
3039 | if (start == 0 && length == 0) | |
3040 | break; | |
3041 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3042 | { | |
3043 | /* Symbol was eliminated due to a COMDAT group. */ | |
3044 | continue; | |
3045 | } | |
3046 | ULONGEST end = start + length; | |
79748972 TT |
3047 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3048 | - baseaddr); | |
3049 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3050 | - baseaddr); | |
927aa2e7 JK |
3051 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3052 | } | |
3053 | } | |
3054 | ||
d320c2b5 | 3055 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3056 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3057 | } |
3058 | ||
9291a0cd TT |
3059 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3060 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3061 | constant pool and return true. If NAME cannot be found, return |
3062 | false. */ | |
2fdf6df6 | 3063 | |
109483d9 | 3064 | static bool |
9291a0cd TT |
3065 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3066 | offset_type **vec_out) | |
3067 | { | |
0cf03b49 | 3068 | offset_type hash; |
9291a0cd | 3069 | offset_type slot, step; |
559a7a62 | 3070 | int (*cmp) (const char *, const char *); |
9291a0cd | 3071 | |
791afaa2 | 3072 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3073 | if (current_language->la_language == language_cplus |
45280282 IB |
3074 | || current_language->la_language == language_fortran |
3075 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3076 | { |
3077 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3078 | not contain any. */ | |
a8719064 | 3079 | |
72998fb3 | 3080 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3081 | { |
109483d9 | 3082 | without_params = cp_remove_params (name); |
0cf03b49 | 3083 | |
72998fb3 | 3084 | if (without_params != NULL) |
791afaa2 | 3085 | name = without_params.get (); |
0cf03b49 JK |
3086 | } |
3087 | } | |
3088 | ||
559a7a62 | 3089 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3090 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3091 | simulate our NAME being searched is also lowercased. */ |
3092 | hash = mapped_index_string_hash ((index->version == 4 | |
3093 | && case_sensitivity == case_sensitive_off | |
3094 | ? 5 : index->version), | |
3095 | name); | |
3096 | ||
f00a2de2 PA |
3097 | slot = hash & (index->symbol_table.size () - 1); |
3098 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3099 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3100 | |
3101 | for (;;) | |
3102 | { | |
9291a0cd | 3103 | const char *str; |
f00a2de2 PA |
3104 | |
3105 | const auto &bucket = index->symbol_table[slot]; | |
3106 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3107 | return false; |
9291a0cd | 3108 | |
f00a2de2 | 3109 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3110 | if (!cmp (name, str)) |
9291a0cd TT |
3111 | { |
3112 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3113 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3114 | return true; |
9291a0cd TT |
3115 | } |
3116 | ||
f00a2de2 | 3117 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3118 | } |
3119 | } | |
3120 | ||
4485a1c1 SM |
3121 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3122 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3123 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3124 | ok to use deprecated sections. |
3125 | ||
3126 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3127 | out parameters that are filled in with information about the CU and | |
3128 | TU lists in the section. | |
3129 | ||
4485a1c1 | 3130 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3131 | |
d33bc52e | 3132 | static bool |
4485a1c1 SM |
3133 | read_gdb_index_from_buffer (struct objfile *objfile, |
3134 | const char *filename, | |
3135 | bool deprecated_ok, | |
3136 | gdb::array_view<const gdb_byte> buffer, | |
3137 | struct mapped_index *map, | |
3138 | const gdb_byte **cu_list, | |
3139 | offset_type *cu_list_elements, | |
3140 | const gdb_byte **types_list, | |
3141 | offset_type *types_list_elements) | |
3142 | { | |
3143 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3144 | |
9291a0cd | 3145 | /* Version check. */ |
4485a1c1 | 3146 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3147 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3148 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3149 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3150 | indices. */ |
831adc1f | 3151 | if (version < 4) |
481860b3 GB |
3152 | { |
3153 | static int warning_printed = 0; | |
3154 | if (!warning_printed) | |
3155 | { | |
3156 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3157 | filename); |
481860b3 GB |
3158 | warning_printed = 1; |
3159 | } | |
3160 | return 0; | |
3161 | } | |
3162 | /* Index version 4 uses a different hash function than index version | |
3163 | 5 and later. | |
3164 | ||
3165 | Versions earlier than 6 did not emit psymbols for inlined | |
3166 | functions. Using these files will cause GDB not to be able to | |
3167 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3168 | indices unless the user has done |
3169 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3170 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3171 | { |
3172 | static int warning_printed = 0; | |
3173 | if (!warning_printed) | |
3174 | { | |
e615022a DE |
3175 | warning (_("\ |
3176 | Skipping deprecated .gdb_index section in %s.\n\ | |
3177 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3178 | to use the section anyway."), | |
2ec9a5e0 | 3179 | filename); |
481860b3 GB |
3180 | warning_printed = 1; |
3181 | } | |
3182 | return 0; | |
3183 | } | |
796a7ff8 | 3184 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3185 | of the TU (for symbols coming from TUs), |
3186 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3187 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3188 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3189 | These are just performance bugs, and we can't distinguish gdb-generated | |
3190 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3191 | |
481860b3 | 3192 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3193 | longer backward compatible. */ |
796a7ff8 | 3194 | if (version > 8) |
594e8718 | 3195 | return 0; |
9291a0cd | 3196 | |
559a7a62 | 3197 | map->version = version; |
9291a0cd | 3198 | |
4485a1c1 | 3199 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3200 | |
4485a1c1 | 3201 | int i = 0; |
2ec9a5e0 TT |
3202 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3203 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3204 | / 8); | |
1fd400ff TT |
3205 | ++i; |
3206 | ||
2ec9a5e0 TT |
3207 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3208 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3209 | - MAYBE_SWAP (metadata[i])) | |
3210 | / 8); | |
987d643c | 3211 | ++i; |
1fd400ff | 3212 | |
f00a2de2 PA |
3213 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3214 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3215 | map->address_table | |
3216 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3217 | ++i; |
3218 | ||
f00a2de2 PA |
3219 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3220 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3221 | map->symbol_table | |
3222 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3223 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3224 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3225 | |
f00a2de2 | 3226 | ++i; |
f9d83a0b | 3227 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3228 | |
2ec9a5e0 TT |
3229 | return 1; |
3230 | } | |
3231 | ||
4485a1c1 SM |
3232 | /* Callback types for dwarf2_read_gdb_index. */ |
3233 | ||
3234 | typedef gdb::function_view | |
3235 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3236 | get_gdb_index_contents_ftype; | |
3237 | typedef gdb::function_view | |
3238 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3239 | get_gdb_index_contents_dwz_ftype; | |
3240 | ||
927aa2e7 | 3241 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3242 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3243 | ||
3244 | static int | |
4485a1c1 SM |
3245 | dwarf2_read_gdb_index |
3246 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3247 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3248 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3249 | { |
2ec9a5e0 TT |
3250 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3251 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3252 | struct dwz_file *dwz; |
12359b5e | 3253 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3254 | |
4485a1c1 SM |
3255 | gdb::array_view<const gdb_byte> main_index_contents |
3256 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3257 | ||
3258 | if (main_index_contents.empty ()) | |
3259 | return 0; | |
3260 | ||
3063847f | 3261 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3262 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3263 | use_deprecated_index_sections, | |
3264 | main_index_contents, map.get (), &cu_list, | |
3265 | &cu_list_elements, &types_list, | |
3266 | &types_list_elements)) | |
2ec9a5e0 TT |
3267 | return 0; |
3268 | ||
0fefef59 | 3269 | /* Don't use the index if it's empty. */ |
3063847f | 3270 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3271 | return 0; |
3272 | ||
2ec9a5e0 TT |
3273 | /* If there is a .dwz file, read it so we can get its CU list as |
3274 | well. */ | |
ed2dc618 | 3275 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3276 | if (dwz != NULL) |
2ec9a5e0 | 3277 | { |
2ec9a5e0 TT |
3278 | struct mapped_index dwz_map; |
3279 | const gdb_byte *dwz_types_ignore; | |
3280 | offset_type dwz_types_elements_ignore; | |
3281 | ||
4485a1c1 SM |
3282 | gdb::array_view<const gdb_byte> dwz_index_content |
3283 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3284 | ||
3285 | if (dwz_index_content.empty ()) | |
3286 | return 0; | |
3287 | ||
3288 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3289 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3290 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3291 | &dwz_list, &dwz_list_elements, |
3292 | &dwz_types_ignore, | |
3293 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3294 | { |
3295 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3296 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3297 | return 0; |
3298 | } | |
3299 | } | |
3300 | ||
12359b5e SM |
3301 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3302 | dwz_list, dwz_list_elements); | |
1fd400ff | 3303 | |
8b70b953 TT |
3304 | if (types_list_elements) |
3305 | { | |
8b70b953 TT |
3306 | /* We can only handle a single .debug_types when we have an |
3307 | index. */ | |
fd5866f6 | 3308 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3309 | return 0; |
3310 | ||
fd5866f6 | 3311 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3312 | |
12359b5e SM |
3313 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3314 | types_list, types_list_elements); | |
8b70b953 | 3315 | } |
9291a0cd | 3316 | |
3063847f | 3317 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3318 | |
3063847f | 3319 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3320 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3321 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3322 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3323 | |
3324 | return 1; | |
3325 | } | |
3326 | ||
dee91e82 | 3327 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3328 | |
dee91e82 DE |
3329 | static void |
3330 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3331 | const gdb_byte *info_ptr, |
3e225074 | 3332 | struct die_info *comp_unit_die) |
9291a0cd | 3333 | { |
dee91e82 | 3334 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3335 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3336 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3337 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3338 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3339 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3340 | struct attribute *attr; |
7b9f3c50 DE |
3341 | void **slot; |
3342 | struct quick_file_names *qfn; | |
9291a0cd | 3343 | |
0186c6a7 DE |
3344 | gdb_assert (! this_cu->is_debug_types); |
3345 | ||
07261596 TT |
3346 | /* Our callers never want to match partial units -- instead they |
3347 | will match the enclosing full CU. */ | |
3348 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3349 | { | |
3350 | this_cu->v.quick->no_file_data = 1; | |
3351 | return; | |
3352 | } | |
3353 | ||
0186c6a7 | 3354 | lh_cu = this_cu; |
7b9f3c50 | 3355 | slot = NULL; |
dee91e82 | 3356 | |
fff8551c | 3357 | line_header_up lh; |
9c541725 | 3358 | sect_offset line_offset {}; |
fff8551c | 3359 | |
dee91e82 | 3360 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3361 | if (attr != nullptr) |
9291a0cd | 3362 | { |
7b9f3c50 DE |
3363 | struct quick_file_names find_entry; |
3364 | ||
9c541725 | 3365 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3366 | |
3367 | /* We may have already read in this line header (TU line header sharing). | |
3368 | If we have we're done. */ | |
094b34ac | 3369 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3370 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3371 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3372 | &find_entry, INSERT); | |
3373 | if (*slot != NULL) | |
3374 | { | |
9a3c8263 | 3375 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3376 | return; |
7b9f3c50 DE |
3377 | } |
3378 | ||
3019eac3 | 3379 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3380 | } |
3381 | if (lh == NULL) | |
3382 | { | |
094b34ac | 3383 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3384 | return; |
9291a0cd TT |
3385 | } |
3386 | ||
8d749320 | 3387 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3388 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3389 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3390 | gdb_assert (slot != NULL); |
3391 | *slot = qfn; | |
9291a0cd | 3392 | |
d721ba37 | 3393 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3394 | |
aa391654 TT |
3395 | int offset = 0; |
3396 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3397 | ++offset; | |
3398 | ||
7ba99d21 | 3399 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3400 | qfn->file_names = |
aa391654 TT |
3401 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3402 | if (offset != 0) | |
3403 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3404 | for (int i = 0; i < lh->file_names_size (); ++i) |
aa391654 | 3405 | qfn->file_names[i + offset] = file_full_name (i + 1, lh.get (), fnd.comp_dir); |
7b9f3c50 | 3406 | qfn->real_names = NULL; |
9291a0cd | 3407 | |
094b34ac | 3408 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3409 | } |
3410 | ||
3411 | /* A helper for the "quick" functions which attempts to read the line | |
3412 | table for THIS_CU. */ | |
3413 | ||
3414 | static struct quick_file_names * | |
e4a48d9d | 3415 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3416 | { |
0186c6a7 DE |
3417 | /* This should never be called for TUs. */ |
3418 | gdb_assert (! this_cu->is_debug_types); | |
3419 | /* Nor type unit groups. */ | |
3420 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3421 | |
dee91e82 DE |
3422 | if (this_cu->v.quick->file_names != NULL) |
3423 | return this_cu->v.quick->file_names; | |
3424 | /* If we know there is no line data, no point in looking again. */ | |
3425 | if (this_cu->v.quick->no_file_data) | |
3426 | return NULL; | |
3427 | ||
c0ab21c2 TT |
3428 | cutu_reader reader (this_cu); |
3429 | if (!reader.dummy_p) | |
3e225074 | 3430 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3431 | |
3432 | if (this_cu->v.quick->no_file_data) | |
3433 | return NULL; | |
3434 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3435 | } |
3436 | ||
3437 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3438 | real path for a given file name from the line table. */ |
2fdf6df6 | 3439 | |
9291a0cd | 3440 | static const char * |
7b9f3c50 DE |
3441 | dw2_get_real_path (struct objfile *objfile, |
3442 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3443 | { |
7b9f3c50 DE |
3444 | if (qfn->real_names == NULL) |
3445 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3446 | qfn->num_file_names, const char *); |
9291a0cd | 3447 | |
7b9f3c50 | 3448 | if (qfn->real_names[index] == NULL) |
14278e1f | 3449 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3450 | |
7b9f3c50 | 3451 | return qfn->real_names[index]; |
9291a0cd TT |
3452 | } |
3453 | ||
3454 | static struct symtab * | |
3455 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3456 | { | |
ed2dc618 SM |
3457 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3458 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3459 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3460 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3461 | |
43f3e411 DE |
3462 | if (cust == NULL) |
3463 | return NULL; | |
ed2dc618 | 3464 | |
43f3e411 | 3465 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3466 | } |
3467 | ||
7b9f3c50 DE |
3468 | /* Traversal function for dw2_forget_cached_source_info. */ |
3469 | ||
3470 | static int | |
3471 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3472 | { |
7b9f3c50 | 3473 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3474 | |
7b9f3c50 | 3475 | if (file_data->real_names) |
9291a0cd | 3476 | { |
7b9f3c50 | 3477 | int i; |
9291a0cd | 3478 | |
7b9f3c50 | 3479 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3480 | { |
7b9f3c50 DE |
3481 | xfree ((void*) file_data->real_names[i]); |
3482 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3483 | } |
3484 | } | |
7b9f3c50 DE |
3485 | |
3486 | return 1; | |
3487 | } | |
3488 | ||
3489 | static void | |
3490 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3491 | { | |
ed2dc618 SM |
3492 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3493 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3494 | |
3495 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3496 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3497 | } |
3498 | ||
f8eba3c6 TT |
3499 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3500 | the symtabs and calls the iterator. */ | |
3501 | ||
3502 | static int | |
3503 | dw2_map_expand_apply (struct objfile *objfile, | |
3504 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3505 | const char *name, const char *real_path, |
14bc53a8 | 3506 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3507 | { |
43f3e411 | 3508 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3509 | |
3510 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3511 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3512 | return 0; |
3513 | ||
3514 | /* This may expand more than one symtab, and we want to iterate over | |
3515 | all of them. */ | |
58f0c718 | 3516 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3517 | |
14bc53a8 PA |
3518 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3519 | last_made, callback); | |
f8eba3c6 TT |
3520 | } |
3521 | ||
3522 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3523 | ||
14bc53a8 PA |
3524 | static bool |
3525 | dw2_map_symtabs_matching_filename | |
3526 | (struct objfile *objfile, const char *name, const char *real_path, | |
3527 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3528 | { |
c011a4f4 | 3529 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3530 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3531 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3532 | |
848e3e78 DE |
3533 | /* The rule is CUs specify all the files, including those used by |
3534 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3535 | |
b76e467d | 3536 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3537 | { |
3d7bb9d9 | 3538 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3539 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3540 | continue; |
3541 | ||
b76e467d | 3542 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3543 | if (file_data == NULL) |
9291a0cd TT |
3544 | continue; |
3545 | ||
b76e467d | 3546 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3547 | { |
7b9f3c50 | 3548 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3549 | const char *this_real_name; |
9291a0cd | 3550 | |
af529f8f | 3551 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3552 | { |
f5b95b50 | 3553 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3554 | callback)) |
3555 | return true; | |
288e77a7 | 3556 | continue; |
4aac40c8 | 3557 | } |
9291a0cd | 3558 | |
c011a4f4 DE |
3559 | /* Before we invoke realpath, which can get expensive when many |
3560 | files are involved, do a quick comparison of the basenames. */ | |
3561 | if (! basenames_may_differ | |
3562 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3563 | continue; | |
3564 | ||
da235a7c JK |
3565 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3566 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3567 | { |
da235a7c | 3568 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3569 | callback)) |
3570 | return true; | |
288e77a7 | 3571 | continue; |
da235a7c | 3572 | } |
9291a0cd | 3573 | |
da235a7c JK |
3574 | if (real_path != NULL) |
3575 | { | |
af529f8f JK |
3576 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3577 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3578 | if (this_real_name != NULL |
af529f8f | 3579 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3580 | { |
f5b95b50 | 3581 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3582 | callback)) |
3583 | return true; | |
288e77a7 | 3584 | continue; |
9291a0cd TT |
3585 | } |
3586 | } | |
3587 | } | |
3588 | } | |
3589 | ||
14bc53a8 | 3590 | return false; |
9291a0cd TT |
3591 | } |
3592 | ||
da51c347 DE |
3593 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3594 | ||
3595 | struct dw2_symtab_iterator | |
9291a0cd | 3596 | { |
ed2dc618 SM |
3597 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3598 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3599 | /* If set, only look for symbols that match that block. Valid values are |
3600 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3601 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3602 | /* The kind of symbol we're looking for. */ |
3603 | domain_enum domain; | |
3604 | /* The list of CUs from the index entry of the symbol, | |
3605 | or NULL if not found. */ | |
3606 | offset_type *vec; | |
3607 | /* The next element in VEC to look at. */ | |
3608 | int next; | |
3609 | /* The number of elements in VEC, or zero if there is no match. */ | |
3610 | int length; | |
8943b874 DE |
3611 | /* Have we seen a global version of the symbol? |
3612 | If so we can ignore all further global instances. | |
3613 | This is to work around gold/15646, inefficient gold-generated | |
3614 | indices. */ | |
3615 | int global_seen; | |
da51c347 | 3616 | }; |
9291a0cd | 3617 | |
2b79f376 | 3618 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3619 | |
9291a0cd | 3620 | static void |
da51c347 | 3621 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3622 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3623 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3624 | domain_enum domain, |
3625 | const char *name) | |
3626 | { | |
ed2dc618 | 3627 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3628 | iter->block_index = block_index; |
3629 | iter->domain = domain; | |
3630 | iter->next = 0; | |
8943b874 | 3631 | iter->global_seen = 0; |
da51c347 | 3632 | |
3063847f | 3633 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3634 | |
3635 | /* index is NULL if OBJF_READNOW. */ | |
3636 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3637 | iter->length = MAYBE_SWAP (*iter->vec); |
3638 | else | |
3639 | { | |
3640 | iter->vec = NULL; | |
3641 | iter->length = 0; | |
3642 | } | |
3643 | } | |
3644 | ||
3645 | /* Return the next matching CU or NULL if there are no more. */ | |
3646 | ||
3647 | static struct dwarf2_per_cu_data * | |
3648 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3649 | { | |
ed2dc618 SM |
3650 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3651 | ||
da51c347 DE |
3652 | for ( ; iter->next < iter->length; ++iter->next) |
3653 | { | |
3654 | offset_type cu_index_and_attrs = | |
3655 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3656 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3657 | gdb_index_symbol_kind symbol_kind = |
3658 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3659 | /* Only check the symbol attributes if they're present. | |
3660 | Indices prior to version 7 don't record them, | |
3661 | and indices >= 7 may elide them for certain symbols | |
3662 | (gold does this). */ | |
3663 | int attrs_valid = | |
ed2dc618 | 3664 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3665 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3666 | ||
3190f0c6 | 3667 | /* Don't crash on bad data. */ |
b76e467d | 3668 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3669 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3670 | { |
b98664d3 | 3671 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3672 | " [in module %s]"), |
3673 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3674 | continue; |
3675 | } | |
3676 | ||
ff4c9fec | 3677 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3678 | |
da51c347 | 3679 | /* Skip if already read in. */ |
43f3e411 | 3680 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3681 | continue; |
3682 | ||
8943b874 DE |
3683 | /* Check static vs global. */ |
3684 | if (attrs_valid) | |
3685 | { | |
2b79f376 SM |
3686 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3687 | ||
3688 | if (iter->block_index.has_value ()) | |
3689 | { | |
3690 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3691 | ||
3692 | if (is_static != want_static) | |
3693 | continue; | |
3694 | } | |
3695 | ||
8943b874 DE |
3696 | /* Work around gold/15646. */ |
3697 | if (!is_static && iter->global_seen) | |
3698 | continue; | |
3699 | if (!is_static) | |
3700 | iter->global_seen = 1; | |
3701 | } | |
da51c347 DE |
3702 | |
3703 | /* Only check the symbol's kind if it has one. */ | |
3704 | if (attrs_valid) | |
3705 | { | |
3706 | switch (iter->domain) | |
3707 | { | |
3708 | case VAR_DOMAIN: | |
3709 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3710 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3711 | /* Some types are also in VAR_DOMAIN. */ | |
3712 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3713 | continue; | |
3714 | break; | |
3715 | case STRUCT_DOMAIN: | |
3716 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3717 | continue; | |
3718 | break; | |
3719 | case LABEL_DOMAIN: | |
3720 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3721 | continue; | |
3722 | break; | |
59c35742 AB |
3723 | case MODULE_DOMAIN: |
3724 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3725 | continue; | |
3726 | break; | |
da51c347 DE |
3727 | default: |
3728 | break; | |
3729 | } | |
3730 | } | |
3731 | ||
3732 | ++iter->next; | |
3733 | return per_cu; | |
3734 | } | |
3735 | ||
3736 | return NULL; | |
3737 | } | |
3738 | ||
43f3e411 | 3739 | static struct compunit_symtab * |
c7f839cb | 3740 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3741 | const char *name, domain_enum domain) |
9291a0cd | 3742 | { |
43f3e411 | 3743 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3744 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3745 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3746 | |
b5ec771e PA |
3747 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3748 | ||
ed2dc618 SM |
3749 | struct dw2_symtab_iterator iter; |
3750 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3751 | |
2b79f376 | 3752 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3753 | |
ed2dc618 SM |
3754 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3755 | { | |
3756 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 3757 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 3758 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3759 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3760 | |
ed2dc618 SM |
3761 | sym = block_find_symbol (block, name, domain, |
3762 | block_find_non_opaque_type_preferred, | |
3763 | &with_opaque); | |
b2e2f908 | 3764 | |
ed2dc618 SM |
3765 | /* Some caution must be observed with overloaded functions |
3766 | and methods, since the index will not contain any overload | |
3767 | information (but NAME might contain it). */ | |
da51c347 | 3768 | |
ed2dc618 SM |
3769 | if (sym != NULL |
3770 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3771 | return stab; | |
3772 | if (with_opaque != NULL | |
3773 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3774 | stab_best = stab; | |
da51c347 | 3775 | |
ed2dc618 | 3776 | /* Keep looking through other CUs. */ |
9291a0cd | 3777 | } |
9291a0cd | 3778 | |
da51c347 | 3779 | return stab_best; |
9291a0cd TT |
3780 | } |
3781 | ||
3782 | static void | |
3783 | dw2_print_stats (struct objfile *objfile) | |
3784 | { | |
ed2dc618 SM |
3785 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3786 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3787 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3788 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 3789 | int count = 0; |
9291a0cd | 3790 | |
ed2dc618 | 3791 | for (int i = 0; i < total; ++i) |
9291a0cd | 3792 | { |
ff4c9fec | 3793 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3794 | |
43f3e411 | 3795 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3796 | ++count; |
3797 | } | |
e4a48d9d | 3798 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3799 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3800 | } | |
3801 | ||
779bd270 DE |
3802 | /* This dumps minimal information about the index. |
3803 | It is called via "mt print objfiles". | |
3804 | One use is to verify .gdb_index has been loaded by the | |
3805 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3806 | ||
9291a0cd TT |
3807 | static void |
3808 | dw2_dump (struct objfile *objfile) | |
3809 | { | |
ed2dc618 SM |
3810 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3811 | = get_dwarf2_per_objfile (objfile); | |
3812 | ||
779bd270 DE |
3813 | gdb_assert (dwarf2_per_objfile->using_index); |
3814 | printf_filtered (".gdb_index:"); | |
3815 | if (dwarf2_per_objfile->index_table != NULL) | |
3816 | { | |
3817 | printf_filtered (" version %d\n", | |
3818 | dwarf2_per_objfile->index_table->version); | |
3819 | } | |
3820 | else | |
3821 | printf_filtered (" faked for \"readnow\"\n"); | |
3822 | printf_filtered ("\n"); | |
9291a0cd TT |
3823 | } |
3824 | ||
9291a0cd TT |
3825 | static void |
3826 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3827 | const char *func_name) | |
3828 | { | |
ed2dc618 SM |
3829 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3830 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3831 | |
ed2dc618 SM |
3832 | struct dw2_symtab_iterator iter; |
3833 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3834 | |
2b79f376 | 3835 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3836 | |
ed2dc618 | 3837 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 3838 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 3839 | |
9291a0cd TT |
3840 | } |
3841 | ||
3842 | static void | |
3843 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3844 | { | |
ed2dc618 SM |
3845 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3846 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3847 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3848 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 3849 | |
ed2dc618 | 3850 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3851 | { |
ff4c9fec | 3852 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3853 | |
58f0c718 TT |
3854 | /* We don't want to directly expand a partial CU, because if we |
3855 | read it with the wrong language, then assertion failures can | |
3856 | be triggered later on. See PR symtab/23010. So, tell | |
3857 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3858 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
3859 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
3860 | } |
3861 | } | |
3862 | ||
3863 | static void | |
652a8996 JK |
3864 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3865 | const char *fullname) | |
9291a0cd | 3866 | { |
ed2dc618 SM |
3867 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3868 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3869 | |
3870 | /* We don't need to consider type units here. | |
3871 | This is only called for examining code, e.g. expand_line_sal. | |
3872 | There can be an order of magnitude (or more) more type units | |
3873 | than comp units, and we avoid them if we can. */ | |
3874 | ||
b76e467d | 3875 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3876 | { |
3d7bb9d9 | 3877 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3878 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3879 | continue; |
3880 | ||
b76e467d | 3881 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3882 | if (file_data == NULL) |
9291a0cd TT |
3883 | continue; |
3884 | ||
b76e467d | 3885 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3886 | { |
652a8996 JK |
3887 | const char *this_fullname = file_data->file_names[j]; |
3888 | ||
3889 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3890 | { |
58f0c718 | 3891 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
3892 | break; |
3893 | } | |
3894 | } | |
3895 | } | |
3896 | } | |
3897 | ||
9291a0cd | 3898 | static void |
199b4314 TT |
3899 | dw2_map_matching_symbols |
3900 | (struct objfile *objfile, | |
b054970d | 3901 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3902 | int global, |
3903 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3904 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3905 | { |
40658b94 | 3906 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3907 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3908 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3909 | } |
3910 | ||
e1ef7d7a PA |
3911 | /* Starting from a search name, return the string that finds the upper |
3912 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3913 | list. Returns the empty string to indicate that the upper bound is | |
3914 | the end of the list. */ | |
3915 | ||
3916 | static std::string | |
3917 | make_sort_after_prefix_name (const char *search_name) | |
3918 | { | |
3919 | /* When looking to complete "func", we find the upper bound of all | |
3920 | symbols that start with "func" by looking for where we'd insert | |
3921 | the closest string that would follow "func" in lexicographical | |
3922 | order. Usually, that's "func"-with-last-character-incremented, | |
3923 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3924 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3925 | Especially mind the 0xff character, which is a valid character in | |
3926 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3927 | rule out compilers allowing it in identifiers. Note that | |
3928 | conveniently, strcmp/strcasecmp are specified to compare | |
3929 | characters interpreted as unsigned char. So what we do is treat | |
3930 | the whole string as a base 256 number composed of a sequence of | |
3931 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3932 | to 0, and carries 1 to the following more-significant position. | |
3933 | If the very first character in SEARCH_NAME ends up incremented | |
3934 | and carries/overflows, then the upper bound is the end of the | |
3935 | list. The string after the empty string is also the empty | |
3936 | string. | |
3937 | ||
3938 | Some examples of this operation: | |
3939 | ||
3940 | SEARCH_NAME => "+1" RESULT | |
3941 | ||
3942 | "abc" => "abd" | |
3943 | "ab\xff" => "ac" | |
3944 | "\xff" "a" "\xff" => "\xff" "b" | |
3945 | "\xff" => "" | |
3946 | "\xff\xff" => "" | |
3947 | "" => "" | |
3948 | ||
3949 | Then, with these symbols for example: | |
3950 | ||
3951 | func | |
3952 | func1 | |
3953 | fund | |
3954 | ||
3955 | completing "func" looks for symbols between "func" and | |
3956 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3957 | which finds "func" and "func1", but not "fund". | |
3958 | ||
3959 | And with: | |
3960 | ||
3961 | funcÿ (Latin1 'ÿ' [0xff]) | |
3962 | funcÿ1 | |
3963 | fund | |
3964 | ||
3965 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3966 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3967 | ||
3968 | And with: | |
3969 | ||
3970 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3971 | ÿÿ1 | |
3972 | ||
3973 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3974 | the end of the list. | |
3975 | */ | |
3976 | std::string after = search_name; | |
3977 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3978 | after.pop_back (); | |
3979 | if (!after.empty ()) | |
3980 | after.back () = (unsigned char) after.back () + 1; | |
3981 | return after; | |
3982 | } | |
3983 | ||
5c58de74 | 3984 | /* See declaration. */ |
61d96d7e | 3985 | |
5c58de74 PA |
3986 | std::pair<std::vector<name_component>::const_iterator, |
3987 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3988 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3989 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3990 | { |
5c58de74 PA |
3991 | auto *name_cmp |
3992 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3993 | |
3b00ef10 TT |
3994 | const char *lang_name |
3995 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 3996 | |
3f563c84 PA |
3997 | /* Comparison function object for lower_bound that matches against a |
3998 | given symbol name. */ | |
3999 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4000 | const char *name) | |
4001 | { | |
5c58de74 | 4002 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4003 | const char *elem_name = elem_qualified + elem.name_offset; |
4004 | return name_cmp (elem_name, name) < 0; | |
4005 | }; | |
4006 | ||
4007 | /* Comparison function object for upper_bound that matches against a | |
4008 | given symbol name. */ | |
4009 | auto lookup_compare_upper = [&] (const char *name, | |
4010 | const name_component &elem) | |
4011 | { | |
5c58de74 | 4012 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4013 | const char *elem_name = elem_qualified + elem.name_offset; |
4014 | return name_cmp (name, elem_name) < 0; | |
4015 | }; | |
4016 | ||
5c58de74 PA |
4017 | auto begin = this->name_components.begin (); |
4018 | auto end = this->name_components.end (); | |
3f563c84 PA |
4019 | |
4020 | /* Find the lower bound. */ | |
4021 | auto lower = [&] () | |
4022 | { | |
3b00ef10 | 4023 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4024 | return begin; |
4025 | else | |
3b00ef10 | 4026 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4027 | } (); |
4028 | ||
4029 | /* Find the upper bound. */ | |
4030 | auto upper = [&] () | |
4031 | { | |
5c58de74 | 4032 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4033 | { |
e1ef7d7a PA |
4034 | /* In completion mode, we want UPPER to point past all |
4035 | symbols names that have the same prefix. I.e., with | |
4036 | these symbols, and completing "func": | |
4037 | ||
4038 | function << lower bound | |
4039 | function1 | |
4040 | other_function << upper bound | |
4041 | ||
4042 | We find the upper bound by looking for the insertion | |
4043 | point of "func"-with-last-character-incremented, | |
4044 | i.e. "fund". */ | |
3b00ef10 | 4045 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4046 | if (after.empty ()) |
3f563c84 | 4047 | return end; |
e6b2f5ef PA |
4048 | return std::lower_bound (lower, end, after.c_str (), |
4049 | lookup_compare_lower); | |
3f563c84 PA |
4050 | } |
4051 | else | |
3b00ef10 | 4052 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4053 | } (); |
4054 | ||
5c58de74 PA |
4055 | return {lower, upper}; |
4056 | } | |
4057 | ||
4058 | /* See declaration. */ | |
4059 | ||
4060 | void | |
44ed8f3e | 4061 | mapped_index_base::build_name_components () |
5c58de74 PA |
4062 | { |
4063 | if (!this->name_components.empty ()) | |
4064 | return; | |
4065 | ||
4066 | this->name_components_casing = case_sensitivity; | |
4067 | auto *name_cmp | |
4068 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4069 | ||
4070 | /* The code below only knows how to break apart components of C++ | |
4071 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4072 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4073 | auto count = this->symbol_name_count (); |
4074 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4075 | { |
44ed8f3e | 4076 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4077 | continue; |
4078 | ||
4079 | const char *name = this->symbol_name_at (idx); | |
4080 | ||
4081 | /* Add each name component to the name component table. */ | |
4082 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4083 | |
4084 | if (strstr (name, "::") != nullptr) | |
4085 | { | |
4086 | for (unsigned int current_len = cp_find_first_component (name); | |
4087 | name[current_len] != '\0'; | |
4088 | current_len += cp_find_first_component (name + current_len)) | |
4089 | { | |
4090 | gdb_assert (name[current_len] == ':'); | |
4091 | this->name_components.push_back ({previous_len, idx}); | |
4092 | /* Skip the '::'. */ | |
4093 | current_len += 2; | |
4094 | previous_len = current_len; | |
4095 | } | |
4096 | } | |
4097 | else | |
5c58de74 | 4098 | { |
3b00ef10 TT |
4099 | /* Handle the Ada encoded (aka mangled) form here. */ |
4100 | for (const char *iter = strstr (name, "__"); | |
4101 | iter != nullptr; | |
4102 | iter = strstr (iter, "__")) | |
4103 | { | |
4104 | this->name_components.push_back ({previous_len, idx}); | |
4105 | iter += 2; | |
4106 | previous_len = iter - name; | |
4107 | } | |
5c58de74 | 4108 | } |
3b00ef10 | 4109 | |
5c58de74 PA |
4110 | this->name_components.push_back ({previous_len, idx}); |
4111 | } | |
4112 | ||
4113 | /* Sort name_components elements by name. */ | |
4114 | auto name_comp_compare = [&] (const name_component &left, | |
4115 | const name_component &right) | |
4116 | { | |
4117 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4118 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4119 | ||
4120 | const char *left_name = left_qualified + left.name_offset; | |
4121 | const char *right_name = right_qualified + right.name_offset; | |
4122 | ||
4123 | return name_cmp (left_name, right_name) < 0; | |
4124 | }; | |
4125 | ||
4126 | std::sort (this->name_components.begin (), | |
4127 | this->name_components.end (), | |
4128 | name_comp_compare); | |
4129 | } | |
4130 | ||
4131 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4132 | mapped_index_base instead of the containing objfile. This is split |
4133 | to a separate function in order to be able to unit test the | |
4134 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4135 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4136 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4137 | |
4138 | static void | |
4139 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4140 | (mapped_index_base &index, |
5c58de74 PA |
4141 | const lookup_name_info &lookup_name_in, |
4142 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4143 | enum search_domain kind, | |
3b00ef10 | 4144 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4145 | { |
4146 | lookup_name_info lookup_name_without_params | |
4147 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4148 | |
4149 | /* Build the symbol name component sorted vector, if we haven't | |
4150 | yet. */ | |
4151 | index.build_name_components (); | |
4152 | ||
3f563c84 PA |
4153 | /* The same symbol may appear more than once in the range though. |
4154 | E.g., if we're looking for symbols that complete "w", and we have | |
4155 | a symbol named "w1::w2", we'll find the two name components for | |
4156 | that same symbol in the range. To be sure we only call the | |
4157 | callback once per symbol, we first collect the symbol name | |
4158 | indexes that matched in a temporary vector and ignore | |
4159 | duplicates. */ | |
4160 | std::vector<offset_type> matches; | |
3f563c84 | 4161 | |
3b00ef10 TT |
4162 | struct name_and_matcher |
4163 | { | |
4164 | symbol_name_matcher_ftype *matcher; | |
4165 | const std::string &name; | |
4166 | ||
4167 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4168 | { |
3b00ef10 TT |
4169 | return matcher == other.matcher && name == other.name; |
4170 | } | |
4171 | }; | |
4172 | ||
4173 | /* A vector holding all the different symbol name matchers, for all | |
4174 | languages. */ | |
4175 | std::vector<name_and_matcher> matchers; | |
4176 | ||
4177 | for (int i = 0; i < nr_languages; i++) | |
4178 | { | |
4179 | enum language lang_e = (enum language) i; | |
4180 | ||
4181 | const language_defn *lang = language_def (lang_e); | |
4182 | symbol_name_matcher_ftype *name_matcher | |
4183 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4184 | |
3b00ef10 TT |
4185 | name_and_matcher key { |
4186 | name_matcher, | |
4187 | lookup_name_without_params.language_lookup_name (lang_e) | |
4188 | }; | |
4189 | ||
4190 | /* Don't insert the same comparison routine more than once. | |
4191 | Note that we do this linear walk. This is not a problem in | |
4192 | practice because the number of supported languages is | |
4193 | low. */ | |
4194 | if (std::find (matchers.begin (), matchers.end (), key) | |
4195 | != matchers.end ()) | |
9291a0cd | 4196 | continue; |
3b00ef10 TT |
4197 | matchers.push_back (std::move (key)); |
4198 | ||
4199 | auto bounds | |
4200 | = index.find_name_components_bounds (lookup_name_without_params, | |
4201 | lang_e); | |
4202 | ||
4203 | /* Now for each symbol name in range, check to see if we have a name | |
4204 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4205 | ||
4206 | for (; bounds.first != bounds.second; ++bounds.first) | |
4207 | { | |
4208 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4209 | ||
4210 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4211 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4212 | continue; | |
9291a0cd | 4213 | |
3b00ef10 TT |
4214 | matches.push_back (bounds.first->idx); |
4215 | } | |
3f563c84 PA |
4216 | } |
4217 | ||
4218 | std::sort (matches.begin (), matches.end ()); | |
4219 | ||
4220 | /* Finally call the callback, once per match. */ | |
4221 | ULONGEST prev = -1; | |
4222 | for (offset_type idx : matches) | |
4223 | { | |
4224 | if (prev != idx) | |
4225 | { | |
3b00ef10 TT |
4226 | if (!match_callback (idx)) |
4227 | break; | |
3f563c84 PA |
4228 | prev = idx; |
4229 | } | |
4230 | } | |
4231 | ||
4232 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4233 | (offset_type)-1 are both possible values. */ | |
4234 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4235 | } | |
4236 | ||
c62446b1 PA |
4237 | #if GDB_SELF_TEST |
4238 | ||
4239 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4240 | ||
a3c5fafd PA |
4241 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4242 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4243 | mapped_index_base interface. Builds an index from the symbol list | |
4244 | passed as parameter to the constructor. */ | |
4245 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4246 | { |
4247 | public: | |
a3c5fafd PA |
4248 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4249 | : m_symbol_table (symbols) | |
c62446b1 PA |
4250 | {} |
4251 | ||
a3c5fafd | 4252 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4253 | |
a3c5fafd | 4254 | /* Return the number of names in the symbol table. */ |
632e107b | 4255 | size_t symbol_name_count () const override |
c62446b1 | 4256 | { |
a3c5fafd | 4257 | return m_symbol_table.size (); |
c62446b1 PA |
4258 | } |
4259 | ||
a3c5fafd | 4260 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4261 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4262 | { |
4263 | return m_symbol_table[idx]; | |
4264 | } | |
c62446b1 | 4265 | |
a3c5fafd PA |
4266 | private: |
4267 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4268 | }; |
4269 | ||
4270 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4271 | string, to pass to print routines. */ | |
4272 | ||
4273 | static const char * | |
4274 | string_or_null (const char *str) | |
4275 | { | |
4276 | return str != NULL ? str : "<null>"; | |
4277 | } | |
4278 | ||
4279 | /* Check if a lookup_name_info built from | |
4280 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4281 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4282 | matching order. If no match expected, then an empty list is | |
4283 | specified. Returns true on success. On failure prints a warning | |
4284 | indicating the file:line that failed, and returns false. */ | |
4285 | ||
4286 | static bool | |
4287 | check_match (const char *file, int line, | |
4288 | mock_mapped_index &mock_index, | |
4289 | const char *name, symbol_name_match_type match_type, | |
4290 | bool completion_mode, | |
4291 | std::initializer_list<const char *> expected_list) | |
4292 | { | |
4293 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4294 | ||
4295 | bool matched = true; | |
4296 | ||
4297 | auto mismatch = [&] (const char *expected_str, | |
4298 | const char *got) | |
4299 | { | |
4300 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4301 | "expected=\"%s\", got=\"%s\"\n"), | |
4302 | file, line, | |
4303 | (match_type == symbol_name_match_type::FULL | |
4304 | ? "FULL" : "WILD"), | |
4305 | name, string_or_null (expected_str), string_or_null (got)); | |
4306 | matched = false; | |
4307 | }; | |
4308 | ||
4309 | auto expected_it = expected_list.begin (); | |
4310 | auto expected_end = expected_list.end (); | |
4311 | ||
a3c5fafd | 4312 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4313 | NULL, ALL_DOMAIN, |
4314 | [&] (offset_type idx) | |
4315 | { | |
a3c5fafd | 4316 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4317 | const char *expected_str |
4318 | = expected_it == expected_end ? NULL : *expected_it++; | |
4319 | ||
4320 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4321 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4322 | return true; |
c62446b1 PA |
4323 | }); |
4324 | ||
4325 | const char *expected_str | |
4326 | = expected_it == expected_end ? NULL : *expected_it++; | |
4327 | if (expected_str != NULL) | |
4328 | mismatch (expected_str, NULL); | |
4329 | ||
4330 | return matched; | |
4331 | } | |
4332 | ||
4333 | /* The symbols added to the mock mapped_index for testing (in | |
4334 | canonical form). */ | |
4335 | static const char *test_symbols[] = { | |
4336 | "function", | |
4337 | "std::bar", | |
4338 | "std::zfunction", | |
4339 | "std::zfunction2", | |
4340 | "w1::w2", | |
4341 | "ns::foo<char*>", | |
4342 | "ns::foo<int>", | |
4343 | "ns::foo<long>", | |
a20714ff PA |
4344 | "ns2::tmpl<int>::foo2", |
4345 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4346 | |
e1ef7d7a PA |
4347 | /* These are used to check that the increment-last-char in the |
4348 | matching algorithm for completion doesn't match "t1_fund" when | |
4349 | completing "t1_func". */ | |
4350 | "t1_func", | |
4351 | "t1_func1", | |
4352 | "t1_fund", | |
4353 | "t1_fund1", | |
4354 | ||
4355 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4356 | cp-name-parser understands this as a single identifier ("função" | |
4357 | is "function" in PT). */ | |
4358 | u8"u8função", | |
4359 | ||
4360 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4361 | "yfunc\377", | |
4362 | ||
4363 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4364 | "\377", | |
4365 | "\377\377123", | |
4366 | ||
c62446b1 PA |
4367 | /* A name with all sorts of complications. Starts with "z" to make |
4368 | it easier for the completion tests below. */ | |
4369 | #define Z_SYM_NAME \ | |
4370 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4371 | "::tuple<(anonymous namespace)::ui*, " \ | |
4372 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4373 | ||
4374 | Z_SYM_NAME | |
4375 | }; | |
4376 | ||
a3c5fafd PA |
4377 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4378 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4379 | in completion mode. */ | |
5c58de74 PA |
4380 | |
4381 | static bool | |
a3c5fafd | 4382 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4383 | const char *search_name, |
4384 | gdb::array_view<const char *> expected_syms) | |
4385 | { | |
4386 | lookup_name_info lookup_name (search_name, | |
4387 | symbol_name_match_type::FULL, true); | |
4388 | ||
3b00ef10 TT |
4389 | auto bounds = index.find_name_components_bounds (lookup_name, |
4390 | language_cplus); | |
5c58de74 PA |
4391 | |
4392 | size_t distance = std::distance (bounds.first, bounds.second); | |
4393 | if (distance != expected_syms.size ()) | |
4394 | return false; | |
4395 | ||
4396 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4397 | { | |
4398 | auto nc_elem = bounds.first + exp_elem; | |
4399 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4400 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4401 | return false; | |
4402 | } | |
4403 | ||
4404 | return true; | |
4405 | } | |
4406 | ||
4407 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4408 | method. */ | |
4409 | ||
c62446b1 | 4410 | static void |
5c58de74 PA |
4411 | test_mapped_index_find_name_component_bounds () |
4412 | { | |
4413 | mock_mapped_index mock_index (test_symbols); | |
4414 | ||
a3c5fafd | 4415 | mock_index.build_name_components (); |
5c58de74 PA |
4416 | |
4417 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4418 | method in completion mode. */ | |
4419 | { | |
4420 | static const char *expected_syms[] = { | |
4421 | "t1_func", | |
4422 | "t1_func1", | |
5c58de74 PA |
4423 | }; |
4424 | ||
a3c5fafd | 4425 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4426 | "t1_func", expected_syms)); |
4427 | } | |
4428 | ||
4429 | /* Check that the increment-last-char in the name matching algorithm | |
4430 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4431 | { | |
4432 | static const char *expected_syms1[] = { | |
4433 | "\377", | |
4434 | "\377\377123", | |
4435 | }; | |
a3c5fafd | 4436 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4437 | "\377", expected_syms1)); |
4438 | ||
4439 | static const char *expected_syms2[] = { | |
4440 | "\377\377123", | |
4441 | }; | |
a3c5fafd | 4442 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4443 | "\377\377", expected_syms2)); |
4444 | } | |
4445 | } | |
4446 | ||
4447 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4448 | ||
4449 | static void | |
4450 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4451 | { |
4452 | mock_mapped_index mock_index (test_symbols); | |
4453 | ||
4454 | /* We let all tests run until the end even if some fails, for debug | |
4455 | convenience. */ | |
4456 | bool any_mismatch = false; | |
4457 | ||
4458 | /* Create the expected symbols list (an initializer_list). Needed | |
4459 | because lists have commas, and we need to pass them to CHECK, | |
4460 | which is a macro. */ | |
4461 | #define EXPECT(...) { __VA_ARGS__ } | |
4462 | ||
4463 | /* Wrapper for check_match that passes down the current | |
4464 | __FILE__/__LINE__. */ | |
4465 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4466 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4467 | mock_index, \ | |
4468 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4469 | EXPECTED_LIST) | |
4470 | ||
4471 | /* Identity checks. */ | |
4472 | for (const char *sym : test_symbols) | |
4473 | { | |
4474 | /* Should be able to match all existing symbols. */ | |
4475 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4476 | EXPECT (sym)); | |
4477 | ||
4478 | /* Should be able to match all existing symbols with | |
4479 | parameters. */ | |
4480 | std::string with_params = std::string (sym) + "(int)"; | |
4481 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4482 | EXPECT (sym)); | |
4483 | ||
4484 | /* Should be able to match all existing symbols with | |
4485 | parameters and qualifiers. */ | |
4486 | with_params = std::string (sym) + " ( int ) const"; | |
4487 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4488 | EXPECT (sym)); | |
4489 | ||
4490 | /* This should really find sym, but cp-name-parser.y doesn't | |
4491 | know about lvalue/rvalue qualifiers yet. */ | |
4492 | with_params = std::string (sym) + " ( int ) &&"; | |
4493 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4494 | {}); | |
4495 | } | |
4496 | ||
e1ef7d7a PA |
4497 | /* Check that the name matching algorithm for completion doesn't get |
4498 | confused with Latin1 'ÿ' / 0xff. */ | |
4499 | { | |
4500 | static const char str[] = "\377"; | |
4501 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4502 | EXPECT ("\377", "\377\377123")); | |
4503 | } | |
4504 | ||
4505 | /* Check that the increment-last-char in the matching algorithm for | |
4506 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4507 | { | |
4508 | static const char str[] = "t1_func"; | |
4509 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4510 | EXPECT ("t1_func", "t1_func1")); | |
4511 | } | |
4512 | ||
c62446b1 PA |
4513 | /* Check that completion mode works at each prefix of the expected |
4514 | symbol name. */ | |
4515 | { | |
4516 | static const char str[] = "function(int)"; | |
4517 | size_t len = strlen (str); | |
4518 | std::string lookup; | |
4519 | ||
4520 | for (size_t i = 1; i < len; i++) | |
4521 | { | |
4522 | lookup.assign (str, i); | |
4523 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4524 | EXPECT ("function")); | |
4525 | } | |
4526 | } | |
4527 | ||
4528 | /* While "w" is a prefix of both components, the match function | |
4529 | should still only be called once. */ | |
4530 | { | |
4531 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4532 | EXPECT ("w1::w2")); | |
a20714ff PA |
4533 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4534 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4535 | } |
4536 | ||
4537 | /* Same, with a "complicated" symbol. */ | |
4538 | { | |
4539 | static const char str[] = Z_SYM_NAME; | |
4540 | size_t len = strlen (str); | |
4541 | std::string lookup; | |
4542 | ||
4543 | for (size_t i = 1; i < len; i++) | |
4544 | { | |
4545 | lookup.assign (str, i); | |
4546 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4547 | EXPECT (Z_SYM_NAME)); | |
4548 | } | |
4549 | } | |
4550 | ||
4551 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4552 | { | |
4553 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4554 | {}); | |
4555 | } | |
4556 | ||
4557 | /* A complete symbol with parameters matches any overload, since the | |
4558 | index has no overload info. */ | |
4559 | { | |
4560 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4561 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4562 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4563 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4564 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4565 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4566 | } |
4567 | ||
4568 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4569 | template argument list. */ | |
4570 | { | |
4571 | static const char expected[] = "ns::foo<int>"; | |
4572 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4573 | EXPECT (expected)); | |
a20714ff PA |
4574 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4575 | EXPECT (expected)); | |
c62446b1 PA |
4576 | } |
4577 | ||
4578 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4579 | template argument list that includes a pointer. */ | |
4580 | { | |
4581 | static const char expected[] = "ns::foo<char*>"; | |
4582 | /* Try both completion and non-completion modes. */ | |
4583 | static const bool completion_mode[2] = {false, true}; | |
4584 | for (size_t i = 0; i < 2; i++) | |
4585 | { | |
4586 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4587 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4588 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4589 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4590 | |
4591 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4592 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4593 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4594 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4595 | } |
4596 | } | |
4597 | ||
4598 | { | |
4599 | /* Check method qualifiers are ignored. */ | |
4600 | static const char expected[] = "ns::foo<char*>"; | |
4601 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4602 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4603 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4604 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4605 | CHECK_MATCH ("foo < char * > ( int ) const", |
4606 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4607 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4608 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4609 | } |
4610 | ||
4611 | /* Test lookup names that don't match anything. */ | |
4612 | { | |
a20714ff PA |
4613 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4614 | {}); | |
4615 | ||
c62446b1 PA |
4616 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4617 | {}); | |
4618 | } | |
4619 | ||
a20714ff PA |
4620 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4621 | which should not be confused with a parameter list. */ | |
4622 | { | |
4623 | static const char *syms[] = { | |
4624 | "A::B::C", | |
4625 | "B::C", | |
4626 | "C", | |
4627 | "A :: B :: C ( int )", | |
4628 | "B :: C ( int )", | |
4629 | "C ( int )", | |
4630 | }; | |
4631 | ||
4632 | for (const char *s : syms) | |
4633 | { | |
4634 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4635 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4636 | } | |
4637 | } | |
4638 | ||
4639 | { | |
4640 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4641 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4642 | EXPECT (expected)); | |
4643 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4644 | EXPECT (expected)); | |
4645 | } | |
4646 | ||
c62446b1 PA |
4647 | SELF_CHECK (!any_mismatch); |
4648 | ||
4649 | #undef EXPECT | |
4650 | #undef CHECK_MATCH | |
4651 | } | |
4652 | ||
5c58de74 PA |
4653 | static void |
4654 | run_test () | |
4655 | { | |
4656 | test_mapped_index_find_name_component_bounds (); | |
4657 | test_dw2_expand_symtabs_matching_symbol (); | |
4658 | } | |
4659 | ||
c62446b1 PA |
4660 | }} // namespace selftests::dw2_expand_symtabs_matching |
4661 | ||
4662 | #endif /* GDB_SELF_TEST */ | |
4663 | ||
4b514bc8 JK |
4664 | /* If FILE_MATCHER is NULL or if PER_CU has |
4665 | dwarf2_per_cu_quick_data::MARK set (see | |
4666 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4667 | EXPANSION_NOTIFY on it. */ | |
4668 | ||
4669 | static void | |
4670 | dw2_expand_symtabs_matching_one | |
4671 | (struct dwarf2_per_cu_data *per_cu, | |
4672 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4673 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4674 | { | |
4675 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4676 | { | |
4677 | bool symtab_was_null | |
4678 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4679 | ||
58f0c718 | 4680 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4681 | |
4682 | if (expansion_notify != NULL | |
4683 | && symtab_was_null | |
4684 | && per_cu->v.quick->compunit_symtab != NULL) | |
4685 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4686 | } | |
4687 | } | |
4688 | ||
3f563c84 PA |
4689 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4690 | matched, to expand corresponding CUs that were marked. IDX is the | |
4691 | index of the symbol name that matched. */ | |
4692 | ||
4693 | static void | |
4694 | dw2_expand_marked_cus | |
ed2dc618 | 4695 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4696 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4697 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4698 | search_domain kind) | |
4699 | { | |
3f563c84 PA |
4700 | offset_type *vec, vec_len, vec_idx; |
4701 | bool global_seen = false; | |
ed2dc618 | 4702 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4703 | |
61920122 | 4704 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4705 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4706 | vec_len = MAYBE_SWAP (vec[0]); |
4707 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4708 | { | |
61920122 PA |
4709 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4710 | /* This value is only valid for index versions >= 7. */ | |
4711 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4712 | gdb_index_symbol_kind symbol_kind = | |
4713 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4714 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4715 | /* Only check the symbol attributes if they're present. | |
4716 | Indices prior to version 7 don't record them, | |
4717 | and indices >= 7 may elide them for certain symbols | |
4718 | (gold does this). */ | |
4719 | int attrs_valid = | |
4720 | (index.version >= 7 | |
4721 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4722 | ||
4723 | /* Work around gold/15646. */ | |
4724 | if (attrs_valid) | |
9291a0cd | 4725 | { |
61920122 PA |
4726 | if (!is_static && global_seen) |
4727 | continue; | |
4728 | if (!is_static) | |
4729 | global_seen = true; | |
4730 | } | |
3190f0c6 | 4731 | |
61920122 PA |
4732 | /* Only check the symbol's kind if it has one. */ |
4733 | if (attrs_valid) | |
4734 | { | |
4735 | switch (kind) | |
8943b874 | 4736 | { |
61920122 PA |
4737 | case VARIABLES_DOMAIN: |
4738 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4739 | continue; | |
4740 | break; | |
4741 | case FUNCTIONS_DOMAIN: | |
4742 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4743 | continue; |
61920122 PA |
4744 | break; |
4745 | case TYPES_DOMAIN: | |
4746 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4747 | continue; | |
4748 | break; | |
59c35742 AB |
4749 | case MODULES_DOMAIN: |
4750 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4751 | continue; | |
4752 | break; | |
61920122 PA |
4753 | default: |
4754 | break; | |
8943b874 | 4755 | } |
61920122 | 4756 | } |
8943b874 | 4757 | |
61920122 | 4758 | /* Don't crash on bad data. */ |
b76e467d | 4759 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4760 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4761 | { |
b98664d3 | 4762 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4763 | " [in module %s]"), |
4764 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4765 | continue; |
4766 | } | |
4767 | ||
ff4c9fec | 4768 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4769 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4770 | expansion_notify); | |
61920122 PA |
4771 | } |
4772 | } | |
4773 | ||
4b514bc8 JK |
4774 | /* If FILE_MATCHER is non-NULL, set all the |
4775 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4776 | that match FILE_MATCHER. */ | |
4777 | ||
61920122 | 4778 | static void |
4b514bc8 | 4779 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4780 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4781 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4782 | { |
4b514bc8 | 4783 | if (file_matcher == NULL) |
61920122 PA |
4784 | return; |
4785 | ||
4b514bc8 JK |
4786 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4787 | ||
4788 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4789 | htab_eq_pointer, | |
4790 | NULL, xcalloc, xfree)); | |
4791 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4792 | htab_eq_pointer, |
4793 | NULL, xcalloc, xfree)); | |
61920122 | 4794 | |
4b514bc8 JK |
4795 | /* The rule is CUs specify all the files, including those used by |
4796 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4797 | |
b76e467d | 4798 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4799 | { |
927aa2e7 JK |
4800 | QUIT; |
4801 | ||
4802 | per_cu->v.quick->mark = 0; | |
4803 | ||
4804 | /* We only need to look at symtabs not already expanded. */ | |
4805 | if (per_cu->v.quick->compunit_symtab) | |
4806 | continue; | |
4807 | ||
b76e467d | 4808 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4809 | if (file_data == NULL) |
4810 | continue; | |
4811 | ||
4812 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4813 | continue; | |
4814 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4815 | { | |
4816 | per_cu->v.quick->mark = 1; | |
4817 | continue; | |
4818 | } | |
4819 | ||
b76e467d | 4820 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4821 | { |
4822 | const char *this_real_name; | |
4823 | ||
4824 | if (file_matcher (file_data->file_names[j], false)) | |
4825 | { | |
4826 | per_cu->v.quick->mark = 1; | |
4827 | break; | |
4828 | } | |
4829 | ||
4830 | /* Before we invoke realpath, which can get expensive when many | |
4831 | files are involved, do a quick comparison of the basenames. */ | |
4832 | if (!basenames_may_differ | |
4833 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4834 | true)) | |
4835 | continue; | |
4836 | ||
4837 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4838 | if (file_matcher (this_real_name, false)) | |
4839 | { | |
4840 | per_cu->v.quick->mark = 1; | |
4841 | break; | |
4842 | } | |
4843 | } | |
4844 | ||
b76e467d SM |
4845 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4846 | ? visited_found.get () | |
4847 | : visited_not_found.get (), | |
4848 | file_data, INSERT); | |
927aa2e7 JK |
4849 | *slot = file_data; |
4850 | } | |
4851 | } | |
4852 | ||
4853 | static void | |
4854 | dw2_expand_symtabs_matching | |
4855 | (struct objfile *objfile, | |
4856 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4857 | const lookup_name_info &lookup_name, | |
4858 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4859 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4860 | enum search_domain kind) | |
4861 | { | |
ed2dc618 SM |
4862 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4863 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4864 | |
4865 | /* index_table is NULL if OBJF_READNOW. */ | |
4866 | if (!dwarf2_per_objfile->index_table) | |
4867 | return; | |
4868 | ||
ed2dc618 | 4869 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
4870 | |
4871 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
4872 | ||
4873 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
4874 | symbol_matcher, | |
4875 | kind, [&] (offset_type idx) | |
4876 | { | |
ed2dc618 | 4877 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4878 | expansion_notify, kind); |
3b00ef10 | 4879 | return true; |
927aa2e7 JK |
4880 | }); |
4881 | } | |
4882 | ||
4883 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4884 | symtab. */ | |
4885 | ||
4886 | static struct compunit_symtab * | |
4887 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4888 | CORE_ADDR pc) | |
4889 | { | |
4890 | int i; | |
4891 | ||
4892 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4893 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4894 | return cust; | |
4895 | ||
4896 | if (cust->includes == NULL) | |
4897 | return NULL; | |
4898 | ||
4899 | for (i = 0; cust->includes[i]; ++i) | |
4900 | { | |
4901 | struct compunit_symtab *s = cust->includes[i]; | |
4902 | ||
4903 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4904 | if (s != NULL) | |
4905 | return s; | |
4906 | } | |
4907 | ||
4908 | return NULL; | |
4909 | } | |
4910 | ||
4911 | static struct compunit_symtab * | |
4912 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4913 | struct bound_minimal_symbol msymbol, | |
4914 | CORE_ADDR pc, | |
4915 | struct obj_section *section, | |
4916 | int warn_if_readin) | |
4917 | { | |
4918 | struct dwarf2_per_cu_data *data; | |
4919 | struct compunit_symtab *result; | |
4920 | ||
d320c2b5 | 4921 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4922 | return NULL; |
4923 | ||
b3b3bada | 4924 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4925 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4926 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4927 | if (!data) |
4928 | return NULL; | |
4929 | ||
4930 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4931 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
4932 | paddress (get_objfile_arch (objfile), pc)); | |
4933 | ||
4934 | result | |
58f0c718 TT |
4935 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4936 | false), | |
927aa2e7 JK |
4937 | pc); |
4938 | gdb_assert (result != NULL); | |
4939 | return result; | |
4940 | } | |
4941 | ||
4942 | static void | |
4943 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4944 | void *data, int need_fullname) | |
4945 | { | |
ed2dc618 SM |
4946 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4947 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4948 | |
4949 | if (!dwarf2_per_objfile->filenames_cache) | |
4950 | { | |
4951 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4952 | ||
4953 | htab_up visited (htab_create_alloc (10, | |
4954 | htab_hash_pointer, htab_eq_pointer, | |
4955 | NULL, xcalloc, xfree)); | |
4956 | ||
4957 | /* The rule is CUs specify all the files, including those used | |
4958 | by any TU, so there's no need to scan TUs here. We can | |
4959 | ignore file names coming from already-expanded CUs. */ | |
4960 | ||
b76e467d | 4961 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4962 | { |
927aa2e7 JK |
4963 | if (per_cu->v.quick->compunit_symtab) |
4964 | { | |
4965 | void **slot = htab_find_slot (visited.get (), | |
4966 | per_cu->v.quick->file_names, | |
4967 | INSERT); | |
4968 | ||
4969 | *slot = per_cu->v.quick->file_names; | |
4970 | } | |
4971 | } | |
4972 | ||
b76e467d | 4973 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4974 | { |
927aa2e7 JK |
4975 | /* We only need to look at symtabs not already expanded. */ |
4976 | if (per_cu->v.quick->compunit_symtab) | |
4977 | continue; | |
4978 | ||
b76e467d | 4979 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4980 | if (file_data == NULL) |
4981 | continue; | |
4982 | ||
b76e467d | 4983 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4984 | if (*slot) |
4985 | { | |
4986 | /* Already visited. */ | |
4987 | continue; | |
4988 | } | |
4989 | *slot = file_data; | |
4990 | ||
4991 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4992 | { | |
4993 | const char *filename = file_data->file_names[j]; | |
4994 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
4995 | } | |
4996 | } | |
4997 | } | |
4998 | ||
4999 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5000 | { | |
5001 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5002 | ||
5003 | if (need_fullname) | |
5004 | this_real_name = gdb_realpath (filename); | |
5005 | (*fun) (filename, this_real_name.get (), data); | |
5006 | }); | |
5007 | } | |
5008 | ||
5009 | static int | |
5010 | dw2_has_symbols (struct objfile *objfile) | |
5011 | { | |
5012 | return 1; | |
5013 | } | |
5014 | ||
5015 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5016 | { | |
5017 | dw2_has_symbols, | |
5018 | dw2_find_last_source_symtab, | |
5019 | dw2_forget_cached_source_info, | |
5020 | dw2_map_symtabs_matching_filename, | |
5021 | dw2_lookup_symbol, | |
5022 | dw2_print_stats, | |
5023 | dw2_dump, | |
927aa2e7 JK |
5024 | dw2_expand_symtabs_for_function, |
5025 | dw2_expand_all_symtabs, | |
5026 | dw2_expand_symtabs_with_fullname, | |
5027 | dw2_map_matching_symbols, | |
5028 | dw2_expand_symtabs_matching, | |
5029 | dw2_find_pc_sect_compunit_symtab, | |
5030 | NULL, | |
5031 | dw2_map_symbol_filenames | |
5032 | }; | |
5033 | ||
5034 | /* DWARF-5 debug_names reader. */ | |
5035 | ||
5036 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5037 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5038 | ||
5039 | /* A helper function that reads the .debug_names section in SECTION | |
5040 | and fills in MAP. FILENAME is the name of the file containing the | |
5041 | section; it is used for error reporting. | |
5042 | ||
5043 | Returns true if all went well, false otherwise. */ | |
5044 | ||
5045 | static bool | |
5046 | read_debug_names_from_section (struct objfile *objfile, | |
5047 | const char *filename, | |
5048 | struct dwarf2_section_info *section, | |
5049 | mapped_debug_names &map) | |
5050 | { | |
96b79293 | 5051 | if (section->empty ()) |
927aa2e7 JK |
5052 | return false; |
5053 | ||
5054 | /* Older elfutils strip versions could keep the section in the main | |
5055 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5056 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5057 | return false; |
5058 | ||
96b79293 | 5059 | section->read (objfile); |
927aa2e7 JK |
5060 | |
5061 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5062 | ||
5063 | const gdb_byte *addr = section->buffer; | |
5064 | ||
96b79293 | 5065 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5066 | |
5067 | unsigned int bytes_read; | |
5068 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5069 | addr += bytes_read; | |
5070 | ||
5071 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5072 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5073 | if (bytes_read + length != section->size) | |
5074 | { | |
5075 | /* There may be multiple per-CU indices. */ | |
5076 | warning (_("Section .debug_names in %s length %s does not match " | |
5077 | "section length %s, ignoring .debug_names."), | |
5078 | filename, plongest (bytes_read + length), | |
5079 | pulongest (section->size)); | |
5080 | return false; | |
5081 | } | |
5082 | ||
5083 | /* The version number. */ | |
5084 | uint16_t version = read_2_bytes (abfd, addr); | |
5085 | addr += 2; | |
5086 | if (version != 5) | |
5087 | { | |
5088 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5089 | "ignoring .debug_names."), | |
5090 | filename, version); | |
5091 | return false; | |
5092 | } | |
5093 | ||
5094 | /* Padding. */ | |
5095 | uint16_t padding = read_2_bytes (abfd, addr); | |
5096 | addr += 2; | |
5097 | if (padding != 0) | |
5098 | { | |
5099 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5100 | "ignoring .debug_names."), | |
5101 | filename, padding); | |
5102 | return false; | |
5103 | } | |
5104 | ||
5105 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5106 | map.cu_count = read_4_bytes (abfd, addr); | |
5107 | addr += 4; | |
5108 | ||
5109 | /* local_type_unit_count - The number of TUs in the local TU | |
5110 | list. */ | |
5111 | map.tu_count = read_4_bytes (abfd, addr); | |
5112 | addr += 4; | |
5113 | ||
5114 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5115 | list. */ | |
5116 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5117 | addr += 4; | |
5118 | if (foreign_tu_count != 0) | |
5119 | { | |
5120 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5121 | "ignoring .debug_names."), | |
5122 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5123 | return false; | |
5124 | } | |
5125 | ||
5126 | /* bucket_count - The number of hash buckets in the hash lookup | |
5127 | table. */ | |
5128 | map.bucket_count = read_4_bytes (abfd, addr); | |
5129 | addr += 4; | |
5130 | ||
5131 | /* name_count - The number of unique names in the index. */ | |
5132 | map.name_count = read_4_bytes (abfd, addr); | |
5133 | addr += 4; | |
5134 | ||
5135 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5136 | table. */ | |
5137 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5138 | addr += 4; | |
5139 | ||
5140 | /* augmentation_string_size - The size in bytes of the augmentation | |
5141 | string. This value is rounded up to a multiple of 4. */ | |
5142 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5143 | addr += 4; | |
5144 | map.augmentation_is_gdb = ((augmentation_string_size | |
5145 | == sizeof (dwarf5_augmentation)) | |
5146 | && memcmp (addr, dwarf5_augmentation, | |
5147 | sizeof (dwarf5_augmentation)) == 0); | |
5148 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5149 | addr += augmentation_string_size; | |
5150 | ||
5151 | /* List of CUs */ | |
5152 | map.cu_table_reordered = addr; | |
5153 | addr += map.cu_count * map.offset_size; | |
5154 | ||
5155 | /* List of Local TUs */ | |
5156 | map.tu_table_reordered = addr; | |
5157 | addr += map.tu_count * map.offset_size; | |
5158 | ||
5159 | /* Hash Lookup Table */ | |
5160 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5161 | addr += map.bucket_count * 4; | |
5162 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5163 | addr += map.name_count * 4; | |
5164 | ||
5165 | /* Name Table */ | |
5166 | map.name_table_string_offs_reordered = addr; | |
5167 | addr += map.name_count * map.offset_size; | |
5168 | map.name_table_entry_offs_reordered = addr; | |
5169 | addr += map.name_count * map.offset_size; | |
5170 | ||
5171 | const gdb_byte *abbrev_table_start = addr; | |
5172 | for (;;) | |
5173 | { | |
927aa2e7 JK |
5174 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5175 | addr += bytes_read; | |
5176 | if (index_num == 0) | |
5177 | break; | |
5178 | ||
5179 | const auto insertpair | |
5180 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5181 | if (!insertpair.second) | |
5182 | { | |
5183 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5184 | "ignoring .debug_names."), | |
5185 | filename, pulongest (index_num)); | |
5186 | return false; | |
5187 | } | |
5188 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5189 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5190 | addr += bytes_read; | |
5191 | ||
5192 | for (;;) | |
5193 | { | |
5194 | mapped_debug_names::index_val::attr attr; | |
5195 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5196 | addr += bytes_read; | |
5197 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5198 | addr += bytes_read; | |
5199 | if (attr.form == DW_FORM_implicit_const) | |
5200 | { | |
5201 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5202 | &bytes_read); | |
5203 | addr += bytes_read; | |
5204 | } | |
5205 | if (attr.dw_idx == 0 && attr.form == 0) | |
5206 | break; | |
5207 | indexval.attr_vec.push_back (std::move (attr)); | |
5208 | } | |
5209 | } | |
5210 | if (addr != abbrev_table_start + abbrev_table_size) | |
5211 | { | |
5212 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5213 | "of size %s vs. written as %u, ignoring .debug_names."), |
5214 | filename, plongest (addr - abbrev_table_start), | |
5215 | abbrev_table_size); | |
927aa2e7 JK |
5216 | return false; |
5217 | } | |
5218 | map.entry_pool = addr; | |
5219 | ||
5220 | return true; | |
5221 | } | |
5222 | ||
5223 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5224 | list. */ | |
5225 | ||
5226 | static void | |
ed2dc618 | 5227 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5228 | const mapped_debug_names &map, |
5229 | dwarf2_section_info §ion, | |
b76e467d | 5230 | bool is_dwz) |
927aa2e7 JK |
5231 | { |
5232 | sect_offset sect_off_prev; | |
5233 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5234 | { | |
5235 | sect_offset sect_off_next; | |
5236 | if (i < map.cu_count) | |
5237 | { | |
5238 | sect_off_next | |
5239 | = (sect_offset) (extract_unsigned_integer | |
5240 | (map.cu_table_reordered + i * map.offset_size, | |
5241 | map.offset_size, | |
5242 | map.dwarf5_byte_order)); | |
5243 | } | |
5244 | else | |
5245 | sect_off_next = (sect_offset) section.size; | |
5246 | if (i >= 1) | |
5247 | { | |
5248 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5249 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5250 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5251 | sect_off_prev, length); |
b76e467d | 5252 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5253 | } |
5254 | sect_off_prev = sect_off_next; | |
5255 | } | |
5256 | } | |
5257 | ||
5258 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5259 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5260 | |
5261 | static void | |
ed2dc618 | 5262 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5263 | const mapped_debug_names &map, |
5264 | const mapped_debug_names &dwz_map) | |
5265 | { | |
b76e467d SM |
5266 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5267 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5268 | |
ed2dc618 SM |
5269 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5270 | dwarf2_per_objfile->info, | |
b76e467d | 5271 | false /* is_dwz */); |
927aa2e7 JK |
5272 | |
5273 | if (dwz_map.cu_count == 0) | |
5274 | return; | |
5275 | ||
ed2dc618 SM |
5276 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5277 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5278 | true /* is_dwz */); |
927aa2e7 JK |
5279 | } |
5280 | ||
5281 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5282 | elements of all the CUs and return true. Otherwise, return false. */ | |
5283 | ||
5284 | static bool | |
ed2dc618 | 5285 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5286 | { |
22ca247e TT |
5287 | std::unique_ptr<mapped_debug_names> map |
5288 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5289 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5290 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5291 | |
5292 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5293 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5294 | *map)) |
927aa2e7 JK |
5295 | return false; |
5296 | ||
5297 | /* Don't use the index if it's empty. */ | |
22ca247e | 5298 | if (map->name_count == 0) |
927aa2e7 JK |
5299 | return false; |
5300 | ||
5301 | /* If there is a .dwz file, read it so we can get its CU list as | |
5302 | well. */ | |
ed2dc618 | 5303 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5304 | if (dwz != NULL) |
5305 | { | |
5306 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5307 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5308 | &dwz->debug_names, dwz_map)) |
5309 | { | |
5310 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5311 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5312 | return false; |
5313 | } | |
5314 | } | |
5315 | ||
22ca247e | 5316 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5317 | |
22ca247e | 5318 | if (map->tu_count != 0) |
927aa2e7 JK |
5319 | { |
5320 | /* We can only handle a single .debug_types when we have an | |
5321 | index. */ | |
fd5866f6 | 5322 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5323 | return false; |
5324 | ||
fd5866f6 | 5325 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5326 | |
5327 | create_signatured_type_table_from_debug_names | |
22ca247e | 5328 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5329 | } |
5330 | ||
ed2dc618 SM |
5331 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5332 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5333 | |
22ca247e | 5334 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5335 | dwarf2_per_objfile->using_index = 1; |
5336 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5337 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5338 | |
5339 | return true; | |
5340 | } | |
5341 | ||
927aa2e7 JK |
5342 | /* Type used to manage iterating over all CUs looking for a symbol for |
5343 | .debug_names. */ | |
5344 | ||
5345 | class dw2_debug_names_iterator | |
5346 | { | |
5347 | public: | |
927aa2e7 | 5348 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5349 | gdb::optional<block_enum> block_index, |
5350 | domain_enum domain, | |
927aa2e7 | 5351 | const char *name) |
2b79f376 | 5352 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5353 | m_addr (find_vec_in_debug_names (map, name)) |
5354 | {} | |
5355 | ||
5356 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5357 | search_domain search, uint32_t namei) | |
5358 | : m_map (map), | |
5359 | m_search (search), | |
5360 | m_addr (find_vec_in_debug_names (map, namei)) | |
5361 | {} | |
5362 | ||
3b00ef10 TT |
5363 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5364 | block_enum block_index, domain_enum domain, | |
5365 | uint32_t namei) | |
5366 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5367 | m_addr (find_vec_in_debug_names (map, namei)) | |
5368 | {} | |
5369 | ||
927aa2e7 JK |
5370 | /* Return the next matching CU or NULL if there are no more. */ |
5371 | dwarf2_per_cu_data *next (); | |
5372 | ||
5373 | private: | |
5374 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5375 | const char *name); | |
5376 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5377 | uint32_t namei); | |
5378 | ||
5379 | /* The internalized form of .debug_names. */ | |
5380 | const mapped_debug_names &m_map; | |
5381 | ||
2b79f376 SM |
5382 | /* If set, only look for symbols that match that block. Valid values are |
5383 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5384 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5385 | |
5386 | /* The kind of symbol we're looking for. */ | |
5387 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5388 | const search_domain m_search = ALL_DOMAIN; | |
5389 | ||
5390 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5391 | not found. */ | |
5392 | const gdb_byte *m_addr; | |
5393 | }; | |
5394 | ||
5395 | const char * | |
5396 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5397 | { | |
5398 | const ULONGEST namei_string_offs | |
5399 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5400 | + namei * offset_size), | |
5401 | offset_size, | |
5402 | dwarf5_byte_order); | |
5403 | return read_indirect_string_at_offset | |
ed2dc618 | 5404 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5405 | } |
5406 | ||
5407 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5408 | found, return pointer to its pool data. If NAME cannot be found, | |
5409 | return NULL. */ | |
5410 | ||
5411 | const gdb_byte * | |
5412 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5413 | (const mapped_debug_names &map, const char *name) | |
5414 | { | |
5415 | int (*cmp) (const char *, const char *); | |
5416 | ||
54ee4252 | 5417 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5418 | if (current_language->la_language == language_cplus |
5419 | || current_language->la_language == language_fortran | |
5420 | || current_language->la_language == language_d) | |
5421 | { | |
5422 | /* NAME is already canonical. Drop any qualifiers as | |
5423 | .debug_names does not contain any. */ | |
5424 | ||
5425 | if (strchr (name, '(') != NULL) | |
5426 | { | |
54ee4252 | 5427 | without_params = cp_remove_params (name); |
927aa2e7 | 5428 | if (without_params != NULL) |
54ee4252 | 5429 | name = without_params.get (); |
927aa2e7 JK |
5430 | } |
5431 | } | |
5432 | ||
5433 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5434 | ||
5435 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5436 | uint32_t namei | |
5437 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5438 | (map.bucket_table_reordered | |
5439 | + (full_hash % map.bucket_count)), 4, | |
5440 | map.dwarf5_byte_order); | |
5441 | if (namei == 0) | |
5442 | return NULL; | |
5443 | --namei; | |
5444 | if (namei >= map.name_count) | |
5445 | { | |
b98664d3 | 5446 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5447 | "[in module %s]"), |
5448 | namei, map.name_count, | |
ed2dc618 | 5449 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5450 | return NULL; |
5451 | } | |
5452 | ||
5453 | for (;;) | |
5454 | { | |
5455 | const uint32_t namei_full_hash | |
5456 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5457 | (map.hash_table_reordered + namei), 4, | |
5458 | map.dwarf5_byte_order); | |
5459 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5460 | return NULL; | |
5461 | ||
5462 | if (full_hash == namei_full_hash) | |
5463 | { | |
5464 | const char *const namei_string = map.namei_to_name (namei); | |
5465 | ||
5466 | #if 0 /* An expensive sanity check. */ | |
5467 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5468 | { | |
b98664d3 | 5469 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5470 | "[in module %s]"), |
5471 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5472 | return NULL; | |
5473 | } | |
5474 | #endif | |
5475 | ||
5476 | if (cmp (namei_string, name) == 0) | |
5477 | { | |
5478 | const ULONGEST namei_entry_offs | |
5479 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5480 | + namei * map.offset_size), | |
5481 | map.offset_size, map.dwarf5_byte_order); | |
5482 | return map.entry_pool + namei_entry_offs; | |
5483 | } | |
5484 | } | |
5485 | ||
5486 | ++namei; | |
5487 | if (namei >= map.name_count) | |
5488 | return NULL; | |
5489 | } | |
5490 | } | |
5491 | ||
5492 | const gdb_byte * | |
5493 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5494 | (const mapped_debug_names &map, uint32_t namei) | |
5495 | { | |
5496 | if (namei >= map.name_count) | |
5497 | { | |
b98664d3 | 5498 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5499 | "[in module %s]"), |
5500 | namei, map.name_count, | |
ed2dc618 | 5501 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5502 | return NULL; |
5503 | } | |
5504 | ||
5505 | const ULONGEST namei_entry_offs | |
5506 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5507 | + namei * map.offset_size), | |
5508 | map.offset_size, map.dwarf5_byte_order); | |
5509 | return map.entry_pool + namei_entry_offs; | |
5510 | } | |
5511 | ||
5512 | /* See dw2_debug_names_iterator. */ | |
5513 | ||
5514 | dwarf2_per_cu_data * | |
5515 | dw2_debug_names_iterator::next () | |
5516 | { | |
5517 | if (m_addr == NULL) | |
5518 | return NULL; | |
5519 | ||
ed2dc618 SM |
5520 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5521 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5522 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5523 | |
5524 | again: | |
5525 | ||
5526 | unsigned int bytes_read; | |
5527 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5528 | m_addr += bytes_read; | |
5529 | if (abbrev == 0) | |
5530 | return NULL; | |
5531 | ||
5532 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5533 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5534 | { | |
b98664d3 | 5535 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5536 | "[in module %s]"), |
ed2dc618 | 5537 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5538 | return NULL; |
5539 | } | |
5540 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5541 | enum class symbol_linkage { |
5542 | unknown, | |
5543 | static_, | |
5544 | extern_, | |
23c13d42 | 5545 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5546 | dwarf2_per_cu_data *per_cu = NULL; |
5547 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5548 | { | |
5549 | ULONGEST ull; | |
5550 | switch (attr.form) | |
5551 | { | |
5552 | case DW_FORM_implicit_const: | |
5553 | ull = attr.implicit_const; | |
5554 | break; | |
5555 | case DW_FORM_flag_present: | |
5556 | ull = 1; | |
5557 | break; | |
5558 | case DW_FORM_udata: | |
5559 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5560 | m_addr += bytes_read; | |
5561 | break; | |
5562 | default: | |
b98664d3 | 5563 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5564 | dwarf_form_name (attr.form), |
ed2dc618 | 5565 | objfile_name (objfile)); |
927aa2e7 JK |
5566 | return NULL; |
5567 | } | |
5568 | switch (attr.dw_idx) | |
5569 | { | |
5570 | case DW_IDX_compile_unit: | |
5571 | /* Don't crash on bad data. */ | |
b76e467d | 5572 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5573 | { |
b98664d3 | 5574 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5575 | " [in module %s]"), |
5576 | pulongest (ull), | |
5577 | objfile_name (dwarf2_per_objfile->objfile)); | |
5578 | continue; | |
5579 | } | |
ff4c9fec | 5580 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5581 | break; |
8af5c486 JK |
5582 | case DW_IDX_type_unit: |
5583 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5584 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5585 | { |
b98664d3 | 5586 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5587 | " [in module %s]"), |
5588 | pulongest (ull), | |
5589 | objfile_name (dwarf2_per_objfile->objfile)); | |
5590 | continue; | |
5591 | } | |
ff4c9fec | 5592 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5593 | break; |
927aa2e7 JK |
5594 | case DW_IDX_GNU_internal: |
5595 | if (!m_map.augmentation_is_gdb) | |
5596 | break; | |
23c13d42 | 5597 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5598 | break; |
5599 | case DW_IDX_GNU_external: | |
5600 | if (!m_map.augmentation_is_gdb) | |
5601 | break; | |
23c13d42 | 5602 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5603 | break; |
5604 | } | |
5605 | } | |
5606 | ||
5607 | /* Skip if already read in. */ | |
5608 | if (per_cu->v.quick->compunit_symtab) | |
5609 | goto again; | |
5610 | ||
5611 | /* Check static vs global. */ | |
23c13d42 | 5612 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5613 | { |
2b79f376 | 5614 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5615 | const bool symbol_is_static = |
5616 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5617 | if (want_static != symbol_is_static) |
2b79f376 | 5618 | goto again; |
927aa2e7 JK |
5619 | } |
5620 | ||
5621 | /* Match dw2_symtab_iter_next, symbol_kind | |
5622 | and debug_names::psymbol_tag. */ | |
5623 | switch (m_domain) | |
5624 | { | |
5625 | case VAR_DOMAIN: | |
5626 | switch (indexval.dwarf_tag) | |
5627 | { | |
5628 | case DW_TAG_variable: | |
5629 | case DW_TAG_subprogram: | |
5630 | /* Some types are also in VAR_DOMAIN. */ | |
5631 | case DW_TAG_typedef: | |
5632 | case DW_TAG_structure_type: | |
5633 | break; | |
5634 | default: | |
5635 | goto again; | |
5636 | } | |
5637 | break; | |
5638 | case STRUCT_DOMAIN: | |
5639 | switch (indexval.dwarf_tag) | |
5640 | { | |
5641 | case DW_TAG_typedef: | |
5642 | case DW_TAG_structure_type: | |
5643 | break; | |
5644 | default: | |
5645 | goto again; | |
5646 | } | |
5647 | break; | |
5648 | case LABEL_DOMAIN: | |
5649 | switch (indexval.dwarf_tag) | |
5650 | { | |
5651 | case 0: | |
5652 | case DW_TAG_variable: | |
5653 | break; | |
5654 | default: | |
5655 | goto again; | |
5656 | } | |
5657 | break; | |
59c35742 AB |
5658 | case MODULE_DOMAIN: |
5659 | switch (indexval.dwarf_tag) | |
5660 | { | |
5661 | case DW_TAG_module: | |
5662 | break; | |
5663 | default: | |
5664 | goto again; | |
5665 | } | |
5666 | break; | |
927aa2e7 JK |
5667 | default: |
5668 | break; | |
5669 | } | |
5670 | ||
5671 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5672 | debug_names::psymbol_tag. */ | |
5673 | switch (m_search) | |
4b514bc8 | 5674 | { |
927aa2e7 JK |
5675 | case VARIABLES_DOMAIN: |
5676 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5677 | { |
927aa2e7 JK |
5678 | case DW_TAG_variable: |
5679 | break; | |
5680 | default: | |
5681 | goto again; | |
4b514bc8 | 5682 | } |
927aa2e7 JK |
5683 | break; |
5684 | case FUNCTIONS_DOMAIN: | |
5685 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5686 | { |
927aa2e7 JK |
5687 | case DW_TAG_subprogram: |
5688 | break; | |
5689 | default: | |
5690 | goto again; | |
4b514bc8 | 5691 | } |
927aa2e7 JK |
5692 | break; |
5693 | case TYPES_DOMAIN: | |
5694 | switch (indexval.dwarf_tag) | |
5695 | { | |
5696 | case DW_TAG_typedef: | |
5697 | case DW_TAG_structure_type: | |
5698 | break; | |
5699 | default: | |
5700 | goto again; | |
5701 | } | |
5702 | break; | |
59c35742 AB |
5703 | case MODULES_DOMAIN: |
5704 | switch (indexval.dwarf_tag) | |
5705 | { | |
5706 | case DW_TAG_module: | |
5707 | break; | |
5708 | default: | |
5709 | goto again; | |
5710 | } | |
927aa2e7 JK |
5711 | default: |
5712 | break; | |
4b514bc8 | 5713 | } |
927aa2e7 JK |
5714 | |
5715 | return per_cu; | |
4b514bc8 | 5716 | } |
61920122 | 5717 | |
927aa2e7 | 5718 | static struct compunit_symtab * |
c7f839cb | 5719 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5720 | const char *name, domain_enum domain) |
4b514bc8 | 5721 | { |
ed2dc618 SM |
5722 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5723 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5724 | |
927aa2e7 JK |
5725 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5726 | if (!mapp) | |
61920122 | 5727 | { |
927aa2e7 JK |
5728 | /* index is NULL if OBJF_READNOW. */ |
5729 | return NULL; | |
5730 | } | |
5731 | const auto &map = *mapp; | |
9291a0cd | 5732 | |
2b79f376 | 5733 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5734 | |
927aa2e7 JK |
5735 | struct compunit_symtab *stab_best = NULL; |
5736 | struct dwarf2_per_cu_data *per_cu; | |
5737 | while ((per_cu = iter.next ()) != NULL) | |
5738 | { | |
5739 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5740 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5741 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5742 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5743 | |
927aa2e7 JK |
5744 | sym = block_find_symbol (block, name, domain, |
5745 | block_find_non_opaque_type_preferred, | |
5746 | &with_opaque); | |
9703b513 | 5747 | |
927aa2e7 JK |
5748 | /* Some caution must be observed with overloaded functions and |
5749 | methods, since the index will not contain any overload | |
5750 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5751 | |
927aa2e7 | 5752 | if (sym != NULL |
987012b8 | 5753 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5754 | return stab; |
5755 | if (with_opaque != NULL | |
987012b8 | 5756 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5757 | stab_best = stab; |
9703b513 | 5758 | |
927aa2e7 | 5759 | /* Keep looking through other CUs. */ |
9703b513 TT |
5760 | } |
5761 | ||
927aa2e7 | 5762 | return stab_best; |
9703b513 TT |
5763 | } |
5764 | ||
927aa2e7 JK |
5765 | /* This dumps minimal information about .debug_names. It is called |
5766 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5767 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5768 | |
927aa2e7 JK |
5769 | static void |
5770 | dw2_debug_names_dump (struct objfile *objfile) | |
5771 | { | |
ed2dc618 SM |
5772 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5773 | = get_dwarf2_per_objfile (objfile); | |
5774 | ||
927aa2e7 JK |
5775 | gdb_assert (dwarf2_per_objfile->using_index); |
5776 | printf_filtered (".debug_names:"); | |
5777 | if (dwarf2_per_objfile->debug_names_table) | |
5778 | printf_filtered (" exists\n"); | |
5779 | else | |
5780 | printf_filtered (" faked for \"readnow\"\n"); | |
5781 | printf_filtered ("\n"); | |
9291a0cd TT |
5782 | } |
5783 | ||
9291a0cd | 5784 | static void |
927aa2e7 JK |
5785 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5786 | const char *func_name) | |
9291a0cd | 5787 | { |
ed2dc618 SM |
5788 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5789 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5790 | |
927aa2e7 JK |
5791 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5792 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5793 | { |
927aa2e7 | 5794 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5795 | |
2b79f376 | 5796 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5797 | |
927aa2e7 JK |
5798 | struct dwarf2_per_cu_data *per_cu; |
5799 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5800 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5801 | } |
5802 | } | |
24c79950 | 5803 | |
3b00ef10 TT |
5804 | static void |
5805 | dw2_debug_names_map_matching_symbols | |
5806 | (struct objfile *objfile, | |
5807 | const lookup_name_info &name, domain_enum domain, | |
5808 | int global, | |
5809 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5810 | symbol_compare_ftype *ordered_compare) | |
5811 | { | |
5812 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5813 | = get_dwarf2_per_objfile (objfile); | |
5814 | ||
5815 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5816 | if (!dwarf2_per_objfile->debug_names_table) | |
5817 | return; | |
5818 | ||
5819 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5820 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5821 | ||
5822 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5823 | auto matcher = [&] (const char *symname) | |
5824 | { | |
5825 | if (ordered_compare == nullptr) | |
5826 | return true; | |
5827 | return ordered_compare (symname, match_name) == 0; | |
5828 | }; | |
5829 | ||
5830 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5831 | [&] (offset_type namei) | |
5832 | { | |
5833 | /* The name was matched, now expand corresponding CUs that were | |
5834 | marked. */ | |
5835 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5836 | ||
5837 | struct dwarf2_per_cu_data *per_cu; | |
5838 | while ((per_cu = iter.next ()) != NULL) | |
5839 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5840 | return true; | |
5841 | }); | |
5842 | ||
5843 | /* It's a shame we couldn't do this inside the | |
5844 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5845 | that have already been expanded. Instead, this loop matches what | |
5846 | the psymtab code does. */ | |
5847 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5848 | { | |
5849 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5850 | if (cust != nullptr) | |
5851 | { | |
5852 | const struct block *block | |
5853 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5854 | if (!iterate_over_symbols_terminated (block, name, | |
5855 | domain, callback)) | |
5856 | break; | |
5857 | } | |
5858 | } | |
5859 | } | |
5860 | ||
927aa2e7 JK |
5861 | static void |
5862 | dw2_debug_names_expand_symtabs_matching | |
5863 | (struct objfile *objfile, | |
5864 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5865 | const lookup_name_info &lookup_name, | |
5866 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5867 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5868 | enum search_domain kind) | |
5869 | { | |
ed2dc618 SM |
5870 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5871 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5872 | |
927aa2e7 JK |
5873 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5874 | if (!dwarf2_per_objfile->debug_names_table) | |
5875 | return; | |
9291a0cd | 5876 | |
ed2dc618 | 5877 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5878 | |
44ed8f3e | 5879 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5880 | |
44ed8f3e PA |
5881 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
5882 | symbol_matcher, | |
5883 | kind, [&] (offset_type namei) | |
927aa2e7 | 5884 | { |
927aa2e7 JK |
5885 | /* The name was matched, now expand corresponding CUs that were |
5886 | marked. */ | |
5887 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5888 | |
927aa2e7 JK |
5889 | struct dwarf2_per_cu_data *per_cu; |
5890 | while ((per_cu = iter.next ()) != NULL) | |
5891 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5892 | expansion_notify); | |
3b00ef10 | 5893 | return true; |
44ed8f3e | 5894 | }); |
9291a0cd TT |
5895 | } |
5896 | ||
927aa2e7 | 5897 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5898 | { |
5899 | dw2_has_symbols, | |
5900 | dw2_find_last_source_symtab, | |
5901 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5902 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5903 | dw2_debug_names_lookup_symbol, |
9291a0cd | 5904 | dw2_print_stats, |
927aa2e7 | 5905 | dw2_debug_names_dump, |
927aa2e7 | 5906 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5907 | dw2_expand_all_symtabs, |
652a8996 | 5908 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5909 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5910 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5911 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5912 | NULL, |
9291a0cd TT |
5913 | dw2_map_symbol_filenames |
5914 | }; | |
5915 | ||
4485a1c1 SM |
5916 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5917 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5918 | ||
5919 | template <typename T> | |
5920 | static gdb::array_view<const gdb_byte> | |
5921 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5922 | { | |
5923 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5924 | ||
96b79293 | 5925 | if (section->empty ()) |
4485a1c1 SM |
5926 | return {}; |
5927 | ||
5928 | /* Older elfutils strip versions could keep the section in the main | |
5929 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5930 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5931 | return {}; |
5932 | ||
96b79293 | 5933 | section->read (obj); |
4485a1c1 | 5934 | |
8bebfcda PA |
5935 | /* dwarf2_section_info::size is a bfd_size_type, while |
5936 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5937 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5938 | is 32-bit. So we need an explicit narrowing conversion here. | |
5939 | This is fine, because it's impossible to allocate or mmap an | |
5940 | array/buffer larger than what size_t can represent. */ | |
5941 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5942 | } |
5943 | ||
87d6a7aa SM |
5944 | /* Lookup the index cache for the contents of the index associated to |
5945 | DWARF2_OBJ. */ | |
5946 | ||
5947 | static gdb::array_view<const gdb_byte> | |
5948 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5949 | { | |
5950 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5951 | if (build_id == nullptr) | |
5952 | return {}; | |
5953 | ||
5954 | return global_index_cache.lookup_gdb_index (build_id, | |
5955 | &dwarf2_obj->index_cache_res); | |
5956 | } | |
5957 | ||
5958 | /* Same as the above, but for DWZ. */ | |
5959 | ||
5960 | static gdb::array_view<const gdb_byte> | |
5961 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5962 | { | |
5963 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5964 | if (build_id == nullptr) | |
5965 | return {}; | |
5966 | ||
5967 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5968 | } | |
5969 | ||
3c0aa29a | 5970 | /* See symfile.h. */ |
9291a0cd | 5971 | |
3c0aa29a PA |
5972 | bool |
5973 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5974 | { |
ed2dc618 SM |
5975 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5976 | = get_dwarf2_per_objfile (objfile); | |
5977 | ||
9291a0cd TT |
5978 | /* If we're about to read full symbols, don't bother with the |
5979 | indices. In this case we also don't care if some other debug | |
5980 | format is making psymtabs, because they are all about to be | |
5981 | expanded anyway. */ | |
5982 | if ((objfile->flags & OBJF_READNOW)) | |
5983 | { | |
9291a0cd | 5984 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5985 | create_all_comp_units (dwarf2_per_objfile); |
5986 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
5987 | dwarf2_per_objfile->quick_file_names_table |
5988 | = create_quick_file_names_table | |
5989 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 5990 | |
b76e467d | 5991 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5992 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 5993 | { |
ff4c9fec | 5994 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 5995 | |
e254ef6a DE |
5996 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
5997 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
5998 | } |
5999 | ||
6000 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6001 | these functions will be no-ops because we will have expanded | |
6002 | all symtabs. */ | |
3c0aa29a PA |
6003 | *index_kind = dw_index_kind::GDB_INDEX; |
6004 | return true; | |
9291a0cd TT |
6005 | } |
6006 | ||
ed2dc618 | 6007 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6008 | { |
6009 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6010 | return true; | |
6011 | } | |
927aa2e7 | 6012 | |
4485a1c1 SM |
6013 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6014 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6015 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6016 | { |
6017 | *index_kind = dw_index_kind::GDB_INDEX; | |
6018 | return true; | |
6019 | } | |
9291a0cd | 6020 | |
87d6a7aa SM |
6021 | /* ... otherwise, try to find the index in the index cache. */ |
6022 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6023 | get_gdb_index_contents_from_cache, | |
6024 | get_gdb_index_contents_from_cache_dwz)) | |
6025 | { | |
6026 | global_index_cache.hit (); | |
6027 | *index_kind = dw_index_kind::GDB_INDEX; | |
6028 | return true; | |
6029 | } | |
6030 | ||
6031 | global_index_cache.miss (); | |
3c0aa29a | 6032 | return false; |
9291a0cd TT |
6033 | } |
6034 | ||
6035 | \f | |
6036 | ||
dce234bc PP |
6037 | /* Build a partial symbol table. */ |
6038 | ||
6039 | void | |
f29dff0a | 6040 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6041 | { |
ed2dc618 SM |
6042 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6043 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6044 | |
6eee24ce | 6045 | init_psymbol_list (objfile, 1024); |
c906108c | 6046 | |
a70b8144 | 6047 | try |
c9bf0622 TT |
6048 | { |
6049 | /* This isn't really ideal: all the data we allocate on the | |
6050 | objfile's obstack is still uselessly kept around. However, | |
6051 | freeing it seems unsafe. */ | |
906768f9 | 6052 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6053 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6054 | psymtabs.keep (); |
87d6a7aa SM |
6055 | |
6056 | /* (maybe) store an index in the cache. */ | |
6057 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6058 | } |
230d2906 | 6059 | catch (const gdb_exception_error &except) |
492d29ea PA |
6060 | { |
6061 | exception_print (gdb_stderr, except); | |
6062 | } | |
c906108c | 6063 | } |
c906108c | 6064 | |
1ce1cefd DE |
6065 | /* Return the total length of the CU described by HEADER. */ |
6066 | ||
6067 | static unsigned int | |
6068 | get_cu_length (const struct comp_unit_head *header) | |
6069 | { | |
6070 | return header->initial_length_size + header->length; | |
6071 | } | |
6072 | ||
9c541725 | 6073 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6074 | |
9c541725 PA |
6075 | static inline bool |
6076 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6077 | { |
9c541725 PA |
6078 | sect_offset bottom = cu_header->sect_off; |
6079 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6080 | |
9c541725 | 6081 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6082 | } |
6083 | ||
3b80fe9b DE |
6084 | /* Find the base address of the compilation unit for range lists and |
6085 | location lists. It will normally be specified by DW_AT_low_pc. | |
6086 | In DWARF-3 draft 4, the base address could be overridden by | |
6087 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6088 | compilation units with discontinuous ranges. */ | |
6089 | ||
6090 | static void | |
6091 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6092 | { | |
6093 | struct attribute *attr; | |
6094 | ||
6095 | cu->base_known = 0; | |
6096 | cu->base_address = 0; | |
6097 | ||
6098 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6099 | if (attr != nullptr) |
3b80fe9b | 6100 | { |
cd6c91b4 | 6101 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6102 | cu->base_known = 1; |
6103 | } | |
6104 | else | |
6105 | { | |
6106 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6107 | if (attr != nullptr) |
3b80fe9b | 6108 | { |
cd6c91b4 | 6109 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6110 | cu->base_known = 1; |
6111 | } | |
6112 | } | |
6113 | } | |
6114 | ||
93311388 | 6115 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6116 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6117 | NOTE: This leaves members offset, first_die_offset to be filled in |
6118 | by the caller. */ | |
107d2387 | 6119 | |
d521ce57 | 6120 | static const gdb_byte * |
107d2387 | 6121 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6122 | const gdb_byte *info_ptr, |
6123 | struct dwarf2_section_info *section, | |
6124 | rcuh_kind section_kind) | |
107d2387 AC |
6125 | { |
6126 | int signed_addr; | |
891d2f0b | 6127 | unsigned int bytes_read; |
96b79293 TT |
6128 | const char *filename = section->get_file_name (); |
6129 | bfd *abfd = section->get_bfd_owner (); | |
c764a876 DE |
6130 | |
6131 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6132 | cu_header->initial_length_size = bytes_read; | |
6133 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6134 | info_ptr += bytes_read; |
107d2387 | 6135 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6136 | if (cu_header->version < 2 || cu_header->version > 5) |
6137 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6138 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6139 | cu_header->version, filename); | |
107d2387 | 6140 | info_ptr += 2; |
43988095 JK |
6141 | if (cu_header->version < 5) |
6142 | switch (section_kind) | |
6143 | { | |
6144 | case rcuh_kind::COMPILE: | |
6145 | cu_header->unit_type = DW_UT_compile; | |
6146 | break; | |
6147 | case rcuh_kind::TYPE: | |
6148 | cu_header->unit_type = DW_UT_type; | |
6149 | break; | |
6150 | default: | |
6151 | internal_error (__FILE__, __LINE__, | |
6152 | _("read_comp_unit_head: invalid section_kind")); | |
6153 | } | |
6154 | else | |
6155 | { | |
6156 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6157 | (read_1_byte (abfd, info_ptr)); | |
6158 | info_ptr += 1; | |
6159 | switch (cu_header->unit_type) | |
6160 | { | |
6161 | case DW_UT_compile: | |
a084a2a6 AT |
6162 | case DW_UT_partial: |
6163 | case DW_UT_skeleton: | |
6164 | case DW_UT_split_compile: | |
43988095 JK |
6165 | if (section_kind != rcuh_kind::COMPILE) |
6166 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6167 | "(is %s, should be %s) [in module %s]"), |
6168 | dwarf_unit_type_name (cu_header->unit_type), | |
6169 | dwarf_unit_type_name (DW_UT_type), filename); | |
43988095 JK |
6170 | break; |
6171 | case DW_UT_type: | |
a084a2a6 | 6172 | case DW_UT_split_type: |
43988095 JK |
6173 | section_kind = rcuh_kind::TYPE; |
6174 | break; | |
6175 | default: | |
6176 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
a084a2a6 AT |
6177 | "(is %#04x, should be one of: %s, %s, %s, %s or %s) " |
6178 | "[in module %s]"), cu_header->unit_type, | |
6179 | dwarf_unit_type_name (DW_UT_compile), | |
6180 | dwarf_unit_type_name (DW_UT_skeleton), | |
6181 | dwarf_unit_type_name (DW_UT_split_compile), | |
6182 | dwarf_unit_type_name (DW_UT_type), | |
6183 | dwarf_unit_type_name (DW_UT_split_type), filename); | |
43988095 JK |
6184 | } |
6185 | ||
6186 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6187 | info_ptr += 1; | |
6188 | } | |
9c541725 PA |
6189 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6190 | cu_header, | |
6191 | &bytes_read); | |
613e1657 | 6192 | info_ptr += bytes_read; |
43988095 JK |
6193 | if (cu_header->version < 5) |
6194 | { | |
6195 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6196 | info_ptr += 1; | |
6197 | } | |
107d2387 AC |
6198 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6199 | if (signed_addr < 0) | |
8e65ff28 | 6200 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6201 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6202 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6203 | |
a084a2a6 AT |
6204 | bool header_has_signature = section_kind == rcuh_kind::TYPE |
6205 | || cu_header->unit_type == DW_UT_skeleton | |
6206 | || cu_header->unit_type == DW_UT_split_compile; | |
43988095 | 6207 | |
a084a2a6 AT |
6208 | if (header_has_signature) |
6209 | { | |
43988095 JK |
6210 | cu_header->signature = read_8_bytes (abfd, info_ptr); |
6211 | info_ptr += 8; | |
a084a2a6 | 6212 | } |
43988095 | 6213 | |
a084a2a6 AT |
6214 | if (section_kind == rcuh_kind::TYPE) |
6215 | { | |
6216 | LONGEST type_offset; | |
43988095 JK |
6217 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); |
6218 | info_ptr += bytes_read; | |
9c541725 PA |
6219 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6220 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6221 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6222 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6223 | filename); | |
6224 | } | |
6225 | ||
107d2387 AC |
6226 | return info_ptr; |
6227 | } | |
6228 | ||
36586728 TT |
6229 | /* Helper function that returns the proper abbrev section for |
6230 | THIS_CU. */ | |
6231 | ||
6232 | static struct dwarf2_section_info * | |
6233 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6234 | { | |
6235 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6236 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6237 | |
6238 | if (this_cu->is_dwz) | |
ed2dc618 | 6239 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6240 | else |
6241 | abbrev = &dwarf2_per_objfile->abbrev; | |
6242 | ||
6243 | return abbrev; | |
6244 | } | |
6245 | ||
9ff913ba DE |
6246 | /* Subroutine of read_and_check_comp_unit_head and |
6247 | read_and_check_type_unit_head to simplify them. | |
6248 | Perform various error checking on the header. */ | |
6249 | ||
6250 | static void | |
ed2dc618 SM |
6251 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6252 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6253 | struct dwarf2_section_info *section, |
6254 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6255 | { |
96b79293 | 6256 | const char *filename = section->get_file_name (); |
9ff913ba | 6257 | |
9c541725 | 6258 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6259 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6260 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6261 | "(offset %s + 6) [in module %s]"), | |
6262 | sect_offset_str (header->abbrev_sect_off), | |
6263 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6264 | filename); |
6265 | ||
9c541725 | 6266 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6267 | avoid potential 32-bit overflow. */ |
9c541725 | 6268 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6269 | > section->size) |
9c541725 | 6270 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6271 | "(offset %s + 0) [in module %s]"), |
6272 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6273 | filename); |
6274 | } | |
6275 | ||
6276 | /* Read in a CU/TU header and perform some basic error checking. | |
6277 | The contents of the header are stored in HEADER. | |
6278 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6279 | |
d521ce57 | 6280 | static const gdb_byte * |
ed2dc618 SM |
6281 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6282 | struct comp_unit_head *header, | |
9ff913ba | 6283 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6284 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6285 | const gdb_byte *info_ptr, |
43988095 | 6286 | rcuh_kind section_kind) |
72bf9492 | 6287 | { |
d521ce57 | 6288 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6289 | |
9c541725 | 6290 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6291 | |
43988095 | 6292 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6293 | |
9c541725 | 6294 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6295 | |
ed2dc618 SM |
6296 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6297 | abbrev_section); | |
9ff913ba DE |
6298 | |
6299 | return info_ptr; | |
348e048f DE |
6300 | } |
6301 | ||
f4dc4d17 DE |
6302 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6303 | ||
6304 | static sect_offset | |
ed2dc618 SM |
6305 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6306 | struct dwarf2_section_info *section, | |
9c541725 | 6307 | sect_offset sect_off) |
f4dc4d17 | 6308 | { |
96b79293 | 6309 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6310 | const gdb_byte *info_ptr; |
ac298888 | 6311 | unsigned int initial_length_size, offset_size; |
43988095 | 6312 | uint16_t version; |
f4dc4d17 | 6313 | |
96b79293 | 6314 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 6315 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6316 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6317 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6318 | info_ptr += initial_length_size; |
6319 | ||
6320 | version = read_2_bytes (abfd, info_ptr); | |
6321 | info_ptr += 2; | |
6322 | if (version >= 5) | |
6323 | { | |
6324 | /* Skip unit type and address size. */ | |
6325 | info_ptr += 2; | |
6326 | } | |
6327 | ||
9c541725 | 6328 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6329 | } |
6330 | ||
aaa75496 JB |
6331 | /* Allocate a new partial symtab for file named NAME and mark this new |
6332 | partial symtab as being an include of PST. */ | |
6333 | ||
6334 | static void | |
891813be | 6335 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6336 | struct objfile *objfile) |
6337 | { | |
891813be | 6338 | dwarf2_psymtab *subpst = new dwarf2_psymtab (name, objfile); |
aaa75496 | 6339 | |
fbd9ab74 JK |
6340 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6341 | { | |
6342 | /* It shares objfile->objfile_obstack. */ | |
6343 | subpst->dirname = pst->dirname; | |
6344 | } | |
6345 | ||
a9342b62 | 6346 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6347 | subpst->dependencies[0] = pst; |
6348 | subpst->number_of_dependencies = 1; | |
6349 | ||
aaa75496 JB |
6350 | /* No private part is necessary for include psymtabs. This property |
6351 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6352 | the regular ones. */ |
891813be | 6353 | subpst->per_cu_data = nullptr; |
aaa75496 JB |
6354 | } |
6355 | ||
6356 | /* Read the Line Number Program data and extract the list of files | |
6357 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6358 | partial symtab for each of these included files. */ |
aaa75496 JB |
6359 | |
6360 | static void | |
6361 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6362 | struct die_info *die, |
891813be | 6363 | dwarf2_psymtab *pst) |
aaa75496 | 6364 | { |
fff8551c | 6365 | line_header_up lh; |
d85a05f0 | 6366 | struct attribute *attr; |
aaa75496 | 6367 | |
d85a05f0 | 6368 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6369 | if (attr != nullptr) |
9c541725 | 6370 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6371 | if (lh == NULL) |
6372 | return; /* No linetable, so no includes. */ | |
6373 | ||
79748972 TT |
6374 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6375 | that we pass in the raw text_low here; that is ok because we're | |
6376 | only decoding the line table to make include partial symtabs, and | |
6377 | so the addresses aren't really used. */ | |
4ae976d1 | 6378 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6379 | pst->raw_text_low (), 1); |
aaa75496 JB |
6380 | } |
6381 | ||
348e048f | 6382 | static hashval_t |
52dc124a | 6383 | hash_signatured_type (const void *item) |
348e048f | 6384 | { |
9a3c8263 SM |
6385 | const struct signatured_type *sig_type |
6386 | = (const struct signatured_type *) item; | |
9a619af0 | 6387 | |
348e048f | 6388 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6389 | return sig_type->signature; |
348e048f DE |
6390 | } |
6391 | ||
6392 | static int | |
52dc124a | 6393 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6394 | { |
9a3c8263 SM |
6395 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6396 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6397 | |
348e048f DE |
6398 | return lhs->signature == rhs->signature; |
6399 | } | |
6400 | ||
1fd400ff TT |
6401 | /* Allocate a hash table for signatured types. */ |
6402 | ||
6403 | static htab_t | |
673bfd45 | 6404 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6405 | { |
6406 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6407 | hash_signatured_type, |
6408 | eq_signatured_type, | |
1fd400ff TT |
6409 | NULL, |
6410 | &objfile->objfile_obstack, | |
6411 | hashtab_obstack_allocate, | |
6412 | dummy_obstack_deallocate); | |
6413 | } | |
6414 | ||
d467dd73 | 6415 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6416 | |
6417 | static int | |
d467dd73 | 6418 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6419 | { |
9a3c8263 | 6420 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6421 | std::vector<signatured_type *> *all_type_units |
6422 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6423 | |
b2bdb8cf | 6424 | all_type_units->push_back (sigt); |
1fd400ff TT |
6425 | |
6426 | return 1; | |
6427 | } | |
6428 | ||
78d4d2c5 | 6429 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6430 | and fill them into TYPES_HTAB. It will process only type units, |
6431 | therefore DW_UT_type. */ | |
c88ee1f0 | 6432 | |
78d4d2c5 | 6433 | static void |
ed2dc618 SM |
6434 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6435 | struct dwo_file *dwo_file, | |
43988095 JK |
6436 | dwarf2_section_info *section, htab_t &types_htab, |
6437 | rcuh_kind section_kind) | |
348e048f | 6438 | { |
3019eac3 | 6439 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6440 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6441 | bfd *abfd; |
6442 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6443 | |
4bdcc0c1 DE |
6444 | abbrev_section = (dwo_file != NULL |
6445 | ? &dwo_file->sections.abbrev | |
6446 | : &dwarf2_per_objfile->abbrev); | |
6447 | ||
b4f54984 | 6448 | if (dwarf_read_debug) |
43988095 | 6449 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6450 | section->get_name (), |
6451 | abbrev_section->get_file_name ()); | |
09406207 | 6452 | |
96b79293 | 6453 | section->read (objfile); |
78d4d2c5 | 6454 | info_ptr = section->buffer; |
348e048f | 6455 | |
78d4d2c5 JK |
6456 | if (info_ptr == NULL) |
6457 | return; | |
348e048f | 6458 | |
78d4d2c5 JK |
6459 | /* We can't set abfd until now because the section may be empty or |
6460 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6461 | abfd = section->get_bfd_owner (); |
348e048f | 6462 | |
c0ab21c2 TT |
6463 | /* We don't use cutu_reader here because we don't need to read |
6464 | any dies: the signature is in the header. */ | |
3019eac3 | 6465 | |
78d4d2c5 JK |
6466 | end_ptr = info_ptr + section->size; |
6467 | while (info_ptr < end_ptr) | |
6468 | { | |
78d4d2c5 JK |
6469 | struct signatured_type *sig_type; |
6470 | struct dwo_unit *dwo_tu; | |
6471 | void **slot; | |
6472 | const gdb_byte *ptr = info_ptr; | |
6473 | struct comp_unit_head header; | |
6474 | unsigned int length; | |
8b70b953 | 6475 | |
9c541725 | 6476 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6477 | |
a49dd8dd JK |
6478 | /* Initialize it due to a false compiler warning. */ |
6479 | header.signature = -1; | |
9c541725 | 6480 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6481 | |
78d4d2c5 JK |
6482 | /* We need to read the type's signature in order to build the hash |
6483 | table, but we don't need anything else just yet. */ | |
348e048f | 6484 | |
ed2dc618 | 6485 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6486 | abbrev_section, ptr, section_kind); |
348e048f | 6487 | |
78d4d2c5 | 6488 | length = get_cu_length (&header); |
6caca83c | 6489 | |
78d4d2c5 JK |
6490 | /* Skip dummy type units. */ |
6491 | if (ptr >= info_ptr + length | |
43988095 JK |
6492 | || peek_abbrev_code (abfd, ptr) == 0 |
6493 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6494 | { |
6495 | info_ptr += length; | |
6496 | continue; | |
6497 | } | |
dee91e82 | 6498 | |
78d4d2c5 JK |
6499 | if (types_htab == NULL) |
6500 | { | |
6501 | if (dwo_file) | |
6502 | types_htab = allocate_dwo_unit_table (objfile); | |
6503 | else | |
6504 | types_htab = allocate_signatured_type_table (objfile); | |
6505 | } | |
8b70b953 | 6506 | |
78d4d2c5 JK |
6507 | if (dwo_file) |
6508 | { | |
6509 | sig_type = NULL; | |
6510 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6511 | struct dwo_unit); | |
6512 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6513 | dwo_tu->signature = header.signature; |
9c541725 | 6514 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6515 | dwo_tu->section = section; |
9c541725 | 6516 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6517 | dwo_tu->length = length; |
6518 | } | |
6519 | else | |
6520 | { | |
6521 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6522 | The real type_offset is in the DWO file. */ | |
6523 | dwo_tu = NULL; | |
6524 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6525 | struct signatured_type); | |
43988095 | 6526 | sig_type->signature = header.signature; |
9c541725 | 6527 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6528 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6529 | sig_type->per_cu.is_debug_types = 1; |
6530 | sig_type->per_cu.section = section; | |
9c541725 | 6531 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6532 | sig_type->per_cu.length = length; |
6533 | } | |
6534 | ||
6535 | slot = htab_find_slot (types_htab, | |
6536 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6537 | INSERT); | |
6538 | gdb_assert (slot != NULL); | |
6539 | if (*slot != NULL) | |
6540 | { | |
9c541725 | 6541 | sect_offset dup_sect_off; |
0349ea22 | 6542 | |
3019eac3 DE |
6543 | if (dwo_file) |
6544 | { | |
78d4d2c5 JK |
6545 | const struct dwo_unit *dup_tu |
6546 | = (const struct dwo_unit *) *slot; | |
6547 | ||
9c541725 | 6548 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6549 | } |
6550 | else | |
6551 | { | |
78d4d2c5 JK |
6552 | const struct signatured_type *dup_tu |
6553 | = (const struct signatured_type *) *slot; | |
6554 | ||
9c541725 | 6555 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6556 | } |
8b70b953 | 6557 | |
b98664d3 | 6558 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6559 | " the entry at offset %s, signature %s"), |
6560 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6561 | hex_string (header.signature)); |
78d4d2c5 JK |
6562 | } |
6563 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6564 | |
78d4d2c5 | 6565 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6566 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6567 | sect_offset_str (sect_off), | |
43988095 | 6568 | hex_string (header.signature)); |
3019eac3 | 6569 | |
78d4d2c5 JK |
6570 | info_ptr += length; |
6571 | } | |
6572 | } | |
3019eac3 | 6573 | |
78d4d2c5 JK |
6574 | /* Create the hash table of all entries in the .debug_types |
6575 | (or .debug_types.dwo) section(s). | |
6576 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6577 | otherwise it is NULL. | |
b3c8eb43 | 6578 | |
78d4d2c5 | 6579 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6580 | |
78d4d2c5 | 6581 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6582 | |
78d4d2c5 | 6583 | static void |
ed2dc618 SM |
6584 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6585 | struct dwo_file *dwo_file, | |
fd5866f6 | 6586 | gdb::array_view<dwarf2_section_info> type_sections, |
78d4d2c5 JK |
6587 | htab_t &types_htab) |
6588 | { | |
fd5866f6 SM |
6589 | for (dwarf2_section_info §ion : type_sections) |
6590 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6591 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6592 | } |
6593 | ||
6594 | /* Create the hash table of all entries in the .debug_types section, | |
6595 | and initialize all_type_units. | |
6596 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6597 | otherwise non-zero. */ | |
6598 | ||
6599 | static int | |
ed2dc618 | 6600 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6601 | { |
78d4d2c5 | 6602 | htab_t types_htab = NULL; |
3019eac3 | 6603 | |
ed2dc618 SM |
6604 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6605 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6606 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6607 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6608 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6609 | if (types_htab == NULL) |
6610 | { | |
6611 | dwarf2_per_objfile->signatured_types = NULL; | |
6612 | return 0; | |
6613 | } | |
6614 | ||
348e048f DE |
6615 | dwarf2_per_objfile->signatured_types = types_htab; |
6616 | ||
b2bdb8cf SM |
6617 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6618 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6619 | ||
6620 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6621 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6622 | |
348e048f DE |
6623 | return 1; |
6624 | } | |
6625 | ||
6aa5f3a6 DE |
6626 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6627 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6628 | Otherwise we find one. */ | |
6629 | ||
6630 | static struct signatured_type * | |
ed2dc618 SM |
6631 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6632 | void **slot) | |
6aa5f3a6 DE |
6633 | { |
6634 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6635 | |
b2bdb8cf SM |
6636 | if (dwarf2_per_objfile->all_type_units.size () |
6637 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6638 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6639 | |
b2bdb8cf SM |
6640 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6641 | struct signatured_type); | |
6642 | ||
6643 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6644 | sig_type->signature = sig; |
6645 | sig_type->per_cu.is_debug_types = 1; | |
6646 | if (dwarf2_per_objfile->using_index) | |
6647 | { | |
6648 | sig_type->per_cu.v.quick = | |
6649 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6650 | struct dwarf2_per_cu_quick_data); | |
6651 | } | |
6652 | ||
6653 | if (slot == NULL) | |
6654 | { | |
6655 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6656 | sig_type, INSERT); | |
6657 | } | |
6658 | gdb_assert (*slot == NULL); | |
6659 | *slot = sig_type; | |
6660 | /* The rest of sig_type must be filled in by the caller. */ | |
6661 | return sig_type; | |
6662 | } | |
6663 | ||
a2ce51a0 DE |
6664 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6665 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6666 | ||
6667 | static void | |
ed2dc618 | 6668 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6669 | struct signatured_type *sig_entry, |
6670 | struct dwo_unit *dwo_entry) | |
6671 | { | |
7ee85ab1 | 6672 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6673 | gdb_assert (! sig_entry->per_cu.queued); |
6674 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6675 | if (dwarf2_per_objfile->using_index) |
6676 | { | |
6677 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6678 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6679 | } |
6680 | else | |
6681 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6682 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6683 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6684 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6685 | gdb_assert (sig_entry->dwo_unit == NULL); |
6686 | ||
6687 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6688 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6689 | sig_entry->per_cu.length = dwo_entry->length; |
6690 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6691 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6692 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6693 | sig_entry->dwo_unit = dwo_entry; | |
6694 | } | |
6695 | ||
6696 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6697 | If we haven't read the TU yet, create the signatured_type data structure |
6698 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6699 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6700 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6701 | containing that CU. Otherwise we could end up reading several other DWO | |
6702 | files (due to comdat folding) to process the transitive closure of all the | |
6703 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6704 | type signature that it needs. | |
a2ce51a0 DE |
6705 | We only do this for .gdb_index because in the psymtab case we already have |
6706 | to read all the DWOs to build the type unit groups. */ | |
6707 | ||
6708 | static struct signatured_type * | |
6709 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6710 | { | |
518817b3 SM |
6711 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6712 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6713 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6714 | struct dwo_file *dwo_file; | |
6715 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6716 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6717 | void **slot; |
a2ce51a0 DE |
6718 | |
6719 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6720 | ||
6aa5f3a6 DE |
6721 | /* If TU skeletons have been removed then we may not have read in any |
6722 | TUs yet. */ | |
6723 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6724 | { | |
6725 | dwarf2_per_objfile->signatured_types | |
6726 | = allocate_signatured_type_table (objfile); | |
6727 | } | |
a2ce51a0 DE |
6728 | |
6729 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6730 | Use the global signatured_types array to do our own comdat-folding |
6731 | of types. If this is the first time we're reading this TU, and | |
6732 | the TU has an entry in .gdb_index, replace the recorded data from | |
6733 | .gdb_index with this TU. */ | |
a2ce51a0 | 6734 | |
a2ce51a0 | 6735 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6736 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6737 | &find_sig_entry, INSERT); | |
9a3c8263 | 6738 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6739 | |
6740 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6741 | read. Don't reassign the global entry to point to this DWO if that's |
6742 | the case. Also note that if the TU is already being read, it may not | |
6743 | have come from a DWO, the program may be a mix of Fission-compiled | |
6744 | code and non-Fission-compiled code. */ | |
6745 | ||
6746 | /* Have we already tried to read this TU? | |
6747 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6748 | needn't exist in the global table yet). */ | |
6749 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6750 | return sig_entry; |
6751 | ||
6aa5f3a6 DE |
6752 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6753 | dwo_unit of the TU itself. */ | |
6754 | dwo_file = cu->dwo_unit->dwo_file; | |
6755 | ||
a2ce51a0 DE |
6756 | /* Ok, this is the first time we're reading this TU. */ |
6757 | if (dwo_file->tus == NULL) | |
6758 | return NULL; | |
6759 | find_dwo_entry.signature = sig; | |
9a3c8263 | 6760 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
6761 | if (dwo_entry == NULL) |
6762 | return NULL; | |
6763 | ||
6aa5f3a6 DE |
6764 | /* If the global table doesn't have an entry for this TU, add one. */ |
6765 | if (sig_entry == NULL) | |
ed2dc618 | 6766 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6767 | |
ed2dc618 | 6768 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6769 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6770 | return sig_entry; |
6771 | } | |
6772 | ||
a2ce51a0 DE |
6773 | /* Subroutine of lookup_signatured_type. |
6774 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6775 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6776 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6777 | |
6778 | static struct signatured_type * | |
6779 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6780 | { | |
518817b3 SM |
6781 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6782 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 6783 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 6784 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6785 | struct dwo_unit *dwo_entry; |
6786 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6787 | void **slot; |
a2ce51a0 DE |
6788 | |
6789 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6790 | gdb_assert (dwp_file != NULL); | |
6791 | ||
6aa5f3a6 DE |
6792 | /* If TU skeletons have been removed then we may not have read in any |
6793 | TUs yet. */ | |
6794 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 6795 | { |
6aa5f3a6 DE |
6796 | dwarf2_per_objfile->signatured_types |
6797 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
6798 | } |
6799 | ||
6aa5f3a6 DE |
6800 | find_sig_entry.signature = sig; |
6801 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6802 | &find_sig_entry, INSERT); | |
9a3c8263 | 6803 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6804 | |
6805 | /* Have we already tried to read this TU? | |
6806 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6807 | needn't exist in the global table yet). */ | |
6808 | if (sig_entry != NULL) | |
6809 | return sig_entry; | |
6810 | ||
a2ce51a0 DE |
6811 | if (dwp_file->tus == NULL) |
6812 | return NULL; | |
ed2dc618 | 6813 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6814 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6815 | if (dwo_entry == NULL) |
6816 | return NULL; | |
6817 | ||
ed2dc618 SM |
6818 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6819 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6820 | |
a2ce51a0 DE |
6821 | return sig_entry; |
6822 | } | |
6823 | ||
380bca97 | 6824 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6825 | Returns NULL if signature SIG is not present in the table. |
6826 | It is up to the caller to complain about this. */ | |
348e048f DE |
6827 | |
6828 | static struct signatured_type * | |
a2ce51a0 | 6829 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6830 | { |
518817b3 SM |
6831 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6832 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6833 | |
a2ce51a0 DE |
6834 | if (cu->dwo_unit |
6835 | && dwarf2_per_objfile->using_index) | |
6836 | { | |
6837 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6838 | These cases require special processing. */ | |
ed2dc618 | 6839 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6840 | return lookup_dwo_signatured_type (cu, sig); |
6841 | else | |
6842 | return lookup_dwp_signatured_type (cu, sig); | |
6843 | } | |
6844 | else | |
6845 | { | |
6846 | struct signatured_type find_entry, *entry; | |
348e048f | 6847 | |
a2ce51a0 DE |
6848 | if (dwarf2_per_objfile->signatured_types == NULL) |
6849 | return NULL; | |
6850 | find_entry.signature = sig; | |
9a3c8263 SM |
6851 | entry = ((struct signatured_type *) |
6852 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
6853 | return entry; |
6854 | } | |
348e048f | 6855 | } |
18a8505e AT |
6856 | |
6857 | /* Return the address base of the compile unit, which, if exists, is stored | |
6858 | either at the attribute DW_AT_GNU_addr_base, or DW_AT_addr_base. */ | |
6859 | static gdb::optional<ULONGEST> | |
6860 | lookup_addr_base (struct die_info *comp_unit_die) | |
6861 | { | |
6862 | struct attribute *attr; | |
6863 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_addr_base); | |
6864 | if (attr == nullptr) | |
6865 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_addr_base); | |
6866 | if (attr == nullptr) | |
6867 | return gdb::optional<ULONGEST> (); | |
6868 | return DW_UNSND (attr); | |
6869 | } | |
6870 | ||
6871 | /* Return range lists base of the compile unit, which, if exists, is stored | |
6872 | either at the attribute DW_AT_rnglists_base or DW_AT_GNU_ranges_base. */ | |
6873 | static ULONGEST | |
6874 | lookup_ranges_base (struct die_info *comp_unit_die) | |
6875 | { | |
6876 | struct attribute *attr; | |
6877 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_rnglists_base); | |
6878 | if (attr == nullptr) | |
6879 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_ranges_base); | |
6880 | if (attr == nullptr) | |
6881 | return 0; | |
6882 | return DW_UNSND (attr); | |
6883 | } | |
6884 | ||
42e7ad6c | 6885 | /* Low level DIE reading support. */ |
348e048f | 6886 | |
d85a05f0 DJ |
6887 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6888 | ||
6889 | static void | |
6890 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6891 | struct dwarf2_cu *cu, |
3019eac3 | 6892 | struct dwarf2_section_info *section, |
685af9cd TT |
6893 | struct dwo_file *dwo_file, |
6894 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6895 | { |
fceca515 | 6896 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6897 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6898 | reader->cu = cu; |
3019eac3 | 6899 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6900 | reader->die_section = section; |
6901 | reader->buffer = section->buffer; | |
f664829e | 6902 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6903 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6904 | } |
6905 | ||
c0ab21c2 | 6906 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6907 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6908 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6909 | already. |
6910 | ||
6911 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6912 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6913 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6914 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6915 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6916 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6917 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6918 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6919 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6920 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6921 | kept around for at least as long as *RESULT_READER. | |
6922 | ||
b0c7bfa9 DE |
6923 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6924 | ||
6925 | static int | |
6926 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6927 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6928 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6929 | const char *stub_comp_dir, |
b0c7bfa9 | 6930 | struct die_reader_specs *result_reader, |
d521ce57 | 6931 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6932 | struct die_info **result_comp_unit_die, |
685af9cd | 6933 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6934 | { |
ed2dc618 | 6935 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6936 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6937 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6938 | bfd *abfd; |
d521ce57 | 6939 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6940 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6941 | int i,num_extra_attrs; | |
6942 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6943 | struct die_info *comp_unit_die; |
6944 | ||
b0aeadb3 DE |
6945 | /* At most one of these may be provided. */ |
6946 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6947 | |
b0c7bfa9 DE |
6948 | /* These attributes aren't processed until later: |
6949 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6950 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6951 | referenced later. However, these attributes are found in the stub | |
6952 | which we won't have later. In order to not impose this complication | |
6953 | on the rest of the code, we read them here and copy them to the | |
6954 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6955 | |
6956 | stmt_list = NULL; | |
6957 | low_pc = NULL; | |
6958 | high_pc = NULL; | |
6959 | ranges = NULL; | |
6960 | comp_dir = NULL; | |
6961 | ||
6962 | if (stub_comp_unit_die != NULL) | |
6963 | { | |
6964 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6965 | DWO file. */ | |
6966 | if (! this_cu->is_debug_types) | |
6967 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6968 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6969 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6970 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6971 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6972 | ||
18a8505e | 6973 | cu->addr_base = lookup_addr_base (stub_comp_unit_die); |
b0c7bfa9 | 6974 | |
18a8505e AT |
6975 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6976 | here (if needed). We need the value before we can process | |
6977 | DW_AT_ranges. */ | |
6978 | cu->ranges_base = lookup_ranges_base (stub_comp_unit_die); | |
b0c7bfa9 | 6979 | } |
a2ce51a0 DE |
6980 | else if (stub_comp_dir != NULL) |
6981 | { | |
6982 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6983 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6984 | comp_dir->name = DW_AT_comp_dir; |
6985 | comp_dir->form = DW_FORM_string; | |
6986 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6987 | DW_STRING (comp_dir) = stub_comp_dir; | |
6988 | } | |
b0c7bfa9 DE |
6989 | |
6990 | /* Set up for reading the DWO CU/TU. */ | |
6991 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6992 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6993 | section->read (objfile); |
6994 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6995 | begin_info_ptr = info_ptr = (section->buffer |
6996 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6997 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6998 | |
6999 | if (this_cu->is_debug_types) | |
7000 | { | |
b0c7bfa9 DE |
7001 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7002 | ||
ed2dc618 SM |
7003 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7004 | &cu->header, section, | |
b0c7bfa9 | 7005 | dwo_abbrev_section, |
43988095 | 7006 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7007 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7008 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7009 | { |
7010 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7011 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7012 | hex_string (sig_type->signature), |
43988095 | 7013 | hex_string (cu->header.signature), |
9d8780f0 | 7014 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7015 | bfd_get_filename (abfd)); |
7016 | } | |
9c541725 | 7017 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7018 | /* For DWOs coming from DWP files, we don't know the CU length |
7019 | nor the type's offset in the TU until now. */ | |
7020 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7021 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7022 | |
7023 | /* Establish the type offset that can be used to lookup the type. | |
7024 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7025 | sig_type->type_offset_in_section |
7026 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7027 | } |
7028 | else | |
7029 | { | |
ed2dc618 SM |
7030 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7031 | &cu->header, section, | |
b0c7bfa9 | 7032 | dwo_abbrev_section, |
43988095 | 7033 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7034 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7035 | /* For DWOs coming from DWP files, we don't know the CU length |
7036 | until now. */ | |
7037 | dwo_unit->length = get_cu_length (&cu->header); | |
7038 | } | |
7039 | ||
685af9cd | 7040 | *result_dwo_abbrev_table |
3054dd54 | 7041 | = abbrev_table_read_table (objfile, dwo_abbrev_section, |
685af9cd TT |
7042 | cu->header.abbrev_sect_off); |
7043 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7044 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7045 | |
7046 | /* Read in the die, but leave space to copy over the attributes | |
7047 | from the stub. This has the benefit of simplifying the rest of | |
7048 | the code - all the work to maintain the illusion of a single | |
7049 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7050 | num_extra_attrs = ((stmt_list != NULL) | |
7051 | + (low_pc != NULL) | |
7052 | + (high_pc != NULL) | |
7053 | + (ranges != NULL) | |
7054 | + (comp_dir != NULL)); | |
7055 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 7056 | num_extra_attrs); |
b0c7bfa9 DE |
7057 | |
7058 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7059 | comp_unit_die = *result_comp_unit_die; | |
7060 | i = comp_unit_die->num_attrs; | |
7061 | if (stmt_list != NULL) | |
7062 | comp_unit_die->attrs[i++] = *stmt_list; | |
7063 | if (low_pc != NULL) | |
7064 | comp_unit_die->attrs[i++] = *low_pc; | |
7065 | if (high_pc != NULL) | |
7066 | comp_unit_die->attrs[i++] = *high_pc; | |
7067 | if (ranges != NULL) | |
7068 | comp_unit_die->attrs[i++] = *ranges; | |
7069 | if (comp_dir != NULL) | |
7070 | comp_unit_die->attrs[i++] = *comp_dir; | |
7071 | comp_unit_die->num_attrs += num_extra_attrs; | |
7072 | ||
b4f54984 | 7073 | if (dwarf_die_debug) |
bf6af496 DE |
7074 | { |
7075 | fprintf_unfiltered (gdb_stdlog, | |
7076 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 7077 | section->get_name (), |
bf6af496 DE |
7078 | (unsigned) (begin_info_ptr - section->buffer), |
7079 | bfd_get_filename (abfd)); | |
b4f54984 | 7080 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7081 | } |
7082 | ||
b0c7bfa9 DE |
7083 | /* Skip dummy compilation units. */ |
7084 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7085 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7086 | return 0; | |
7087 | ||
7088 | *result_info_ptr = info_ptr; | |
7089 | return 1; | |
7090 | } | |
7091 | ||
a084a2a6 AT |
7092 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7093 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7094 | signature is part of the header. */ | |
7095 | static gdb::optional<ULONGEST> | |
7096 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7097 | { | |
7098 | if (cu->header.version >= 5) | |
7099 | return cu->header.signature; | |
7100 | struct attribute *attr; | |
7101 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7102 | if (attr == nullptr) | |
7103 | return gdb::optional<ULONGEST> (); | |
7104 | return DW_UNSND (attr); | |
7105 | } | |
7106 | ||
c0ab21c2 | 7107 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7108 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7109 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7110 | |
7111 | static struct dwo_unit * | |
7112 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
7113 | struct die_info *comp_unit_die, |
7114 | const char *dwo_name) | |
b0c7bfa9 DE |
7115 | { |
7116 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7117 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7118 | const char *comp_dir; |
b0c7bfa9 | 7119 | |
a2ce51a0 DE |
7120 | gdb_assert (cu != NULL); |
7121 | ||
b0c7bfa9 | 7122 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7123 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7124 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
7125 | |
7126 | if (this_cu->is_debug_types) | |
7127 | { | |
7128 | struct signatured_type *sig_type; | |
7129 | ||
7130 | /* Since this_cu is the first member of struct signatured_type, | |
7131 | we can go from a pointer to one to a pointer to the other. */ | |
7132 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
7133 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
7134 | } | |
7135 | else | |
7136 | { | |
a084a2a6 AT |
7137 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
7138 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
7139 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7140 | " [in module %s]"), | |
e3b94546 | 7141 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 7142 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 7143 | *signature); |
b0c7bfa9 DE |
7144 | } |
7145 | ||
b0c7bfa9 DE |
7146 | return dwo_unit; |
7147 | } | |
7148 | ||
c0ab21c2 | 7149 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7150 | See it for a description of the parameters. |
fcd3b13d | 7151 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7152 | |
c0ab21c2 TT |
7153 | void |
7154 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
7155 | int use_existing_cu, int keep) | |
a2ce51a0 | 7156 | { |
a2ce51a0 | 7157 | struct signatured_type *sig_type; |
a2ce51a0 | 7158 | struct die_reader_specs reader; |
a2ce51a0 DE |
7159 | |
7160 | /* Verify we can do the following downcast, and that we have the | |
7161 | data we need. */ | |
7162 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7163 | sig_type = (struct signatured_type *) this_cu; | |
7164 | gdb_assert (sig_type->dwo_unit != NULL); | |
7165 | ||
6aa5f3a6 DE |
7166 | if (use_existing_cu && this_cu->cu != NULL) |
7167 | { | |
7168 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7169 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7170 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7171 | } |
7172 | else | |
7173 | { | |
7174 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7175 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 7176 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7177 | } |
7178 | ||
7179 | /* A future optimization, if needed, would be to use an existing | |
7180 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7181 | could share abbrev tables. */ | |
a2ce51a0 DE |
7182 | |
7183 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
7184 | NULL /* stub_comp_unit_die */, |
7185 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7186 | &reader, &info_ptr, | |
3e225074 | 7187 | &comp_unit_die, |
c0ab21c2 | 7188 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7189 | { |
7190 | /* Dummy die. */ | |
c0ab21c2 | 7191 | dummy_p = true; |
a2ce51a0 | 7192 | } |
a2ce51a0 DE |
7193 | } |
7194 | ||
fd820528 | 7195 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7196 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7197 | |
f4dc4d17 DE |
7198 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7199 | Otherwise the table specified in the comp unit header is read in and used. | |
7200 | This is an optimization for when we already have the abbrev table. | |
7201 | ||
dee91e82 DE |
7202 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7203 | Otherwise, a new CU is allocated with xmalloc. | |
7204 | ||
7205 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
c0ab21c2 TT |
7206 | read_in_chain. Otherwise the dwarf2_cu data is freed at the |
7207 | end. */ | |
aaa75496 | 7208 | |
c0ab21c2 TT |
7209 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7210 | struct abbrev_table *abbrev_table, | |
7211 | int use_existing_cu, int keep, | |
7212 | bool skip_partial) | |
7213 | : die_reader_specs {}, | |
7214 | m_this_cu (this_cu), | |
7215 | m_keep (keep) | |
c906108c | 7216 | { |
ed2dc618 | 7217 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7218 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7219 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7220 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 7221 | struct dwarf2_cu *cu; |
c0ab21c2 | 7222 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7223 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7224 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7225 | /* Non-zero if CU currently points to a DWO file and we need to |
7226 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7227 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7228 | int rereading_dwo_cu = 0; |
c906108c | 7229 | |
b4f54984 | 7230 | if (dwarf_die_debug) |
9d8780f0 | 7231 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7232 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7233 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7234 | |
dee91e82 DE |
7235 | if (use_existing_cu) |
7236 | gdb_assert (keep); | |
23745b47 | 7237 | |
a2ce51a0 DE |
7238 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7239 | file (instead of going through the stub), short-circuit all of this. */ | |
7240 | if (this_cu->reading_dwo_directly) | |
7241 | { | |
7242 | /* Narrow down the scope of possibilities to have to understand. */ | |
7243 | gdb_assert (this_cu->is_debug_types); | |
7244 | gdb_assert (abbrev_table == NULL); | |
c0ab21c2 | 7245 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep); |
a2ce51a0 DE |
7246 | return; |
7247 | } | |
7248 | ||
dee91e82 | 7249 | /* This is cheap if the section is already read in. */ |
96b79293 | 7250 | section->read (objfile); |
dee91e82 | 7251 | |
9c541725 | 7252 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7253 | |
7254 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
7255 | |
7256 | if (use_existing_cu && this_cu->cu != NULL) | |
7257 | { | |
7258 | cu = this_cu->cu; | |
42e7ad6c DE |
7259 | /* If this CU is from a DWO file we need to start over, we need to |
7260 | refetch the attributes from the skeleton CU. | |
7261 | This could be optimized by retrieving those attributes from when we | |
7262 | were here the first time: the previous comp_unit_die was stored in | |
7263 | comp_unit_obstack. But there's no data yet that we need this | |
7264 | optimization. */ | |
7265 | if (cu->dwo_unit != NULL) | |
7266 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7267 | } |
7268 | else | |
7269 | { | |
7270 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7271 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
7272 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
7273 | cu = m_new_cu.get (); | |
42e7ad6c | 7274 | } |
dee91e82 | 7275 | |
b0c7bfa9 | 7276 | /* Get the header. */ |
9c541725 | 7277 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7278 | { |
7279 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7280 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7281 | } |
7282 | else | |
7283 | { | |
3019eac3 | 7284 | if (this_cu->is_debug_types) |
dee91e82 | 7285 | { |
ed2dc618 SM |
7286 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7287 | &cu->header, section, | |
4bdcc0c1 | 7288 | abbrev_section, info_ptr, |
43988095 | 7289 | rcuh_kind::TYPE); |
dee91e82 | 7290 | |
42e7ad6c DE |
7291 | /* Since per_cu is the first member of struct signatured_type, |
7292 | we can go from a pointer to one to a pointer to the other. */ | |
7293 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7294 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7295 | gdb_assert (sig_type->type_offset_in_tu |
7296 | == cu->header.type_cu_offset_in_tu); | |
7297 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7298 | |
42e7ad6c DE |
7299 | /* LENGTH has not been set yet for type units if we're |
7300 | using .gdb_index. */ | |
1ce1cefd | 7301 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7302 | |
7303 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7304 | sig_type->type_offset_in_section = |
7305 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7306 | |
7307 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7308 | } |
7309 | else | |
7310 | { | |
ed2dc618 SM |
7311 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7312 | &cu->header, section, | |
4bdcc0c1 | 7313 | abbrev_section, |
43988095 JK |
7314 | info_ptr, |
7315 | rcuh_kind::COMPILE); | |
dee91e82 | 7316 | |
9c541725 | 7317 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7318 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7319 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7320 | } |
7321 | } | |
10b3939b | 7322 | |
6caca83c | 7323 | /* Skip dummy compilation units. */ |
dee91e82 | 7324 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7325 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7326 | { |
7327 | dummy_p = true; | |
7328 | return; | |
7329 | } | |
6caca83c | 7330 | |
433df2d4 DE |
7331 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7332 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7333 | done. */ |
f4dc4d17 | 7334 | if (abbrev_table != NULL) |
685af9cd TT |
7335 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7336 | else | |
f4dc4d17 | 7337 | { |
c0ab21c2 | 7338 | m_abbrev_table_holder |
3054dd54 | 7339 | = abbrev_table_read_table (objfile, abbrev_section, |
685af9cd | 7340 | cu->header.abbrev_sect_off); |
c0ab21c2 | 7341 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7342 | } |
af703f96 | 7343 | |
dee91e82 | 7344 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7345 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7346 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7347 | |
58f0c718 | 7348 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7349 | { |
7350 | dummy_p = true; | |
7351 | return; | |
7352 | } | |
58f0c718 | 7353 | |
b0c7bfa9 | 7354 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7355 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7356 | table from the DWO file and pass the ownership over to us. It will be | |
7357 | referenced from READER, so we must make sure to free it after we're done | |
7358 | with READER. | |
7359 | ||
b0c7bfa9 DE |
7360 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7361 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7362 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7363 | if (dwo_name != nullptr) |
3019eac3 | 7364 | { |
3019eac3 | 7365 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7366 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7367 | |
3e225074 | 7368 | if (comp_unit_die->has_children) |
6a506a2d | 7369 | { |
b98664d3 | 7370 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7371 | " has children (offset %s) [in module %s]"), |
7372 | sect_offset_str (this_cu->sect_off), | |
7373 | bfd_get_filename (abfd)); | |
6a506a2d | 7374 | } |
c0ab21c2 | 7375 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 7376 | if (dwo_unit != NULL) |
3019eac3 | 7377 | { |
6a506a2d | 7378 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7379 | comp_unit_die, NULL, |
c0ab21c2 | 7380 | this, &info_ptr, |
3e225074 | 7381 | &dwo_comp_unit_die, |
c0ab21c2 | 7382 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7383 | { |
7384 | /* Dummy die. */ | |
c0ab21c2 | 7385 | dummy_p = true; |
6a506a2d DE |
7386 | return; |
7387 | } | |
7388 | comp_unit_die = dwo_comp_unit_die; | |
7389 | } | |
7390 | else | |
7391 | { | |
7392 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7393 | the stub. A complaint has already been logged. There's | |
7394 | not much more we can do except pass on the stub DIE to | |
7395 | die_reader_func. We don't want to throw an error on bad | |
7396 | debug info. */ | |
3019eac3 DE |
7397 | } |
7398 | } | |
c0ab21c2 | 7399 | } |
3019eac3 | 7400 | |
c0ab21c2 TT |
7401 | cutu_reader::~cutu_reader () |
7402 | { | |
b0c7bfa9 | 7403 | /* Done, clean up. */ |
c0ab21c2 | 7404 | if (m_new_cu != NULL && m_keep && !dummy_p) |
348e048f | 7405 | { |
c0ab21c2 TT |
7406 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7407 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 7408 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
7409 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
7410 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 7411 | /* The chain owns it now. */ |
c0ab21c2 | 7412 | m_new_cu.release (); |
348e048f | 7413 | } |
dee91e82 DE |
7414 | } |
7415 | ||
18a8505e AT |
7416 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7417 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7418 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7419 | |
7420 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7421 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7422 | |
7423 | We fill in THIS_CU->length. | |
7424 | ||
dee91e82 | 7425 | THIS_CU->cu is always freed when done. |
3019eac3 | 7426 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7427 | to care whether it refers to the "main" CU or the DWO CU. |
7428 | ||
7429 | When parent_cu is passed, it is used to provide a default value for | |
7430 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7431 | |
c0ab21c2 TT |
7432 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7433 | struct dwarf2_cu *parent_cu, | |
7434 | struct dwo_file *dwo_file) | |
7435 | : die_reader_specs {}, | |
7436 | m_this_cu (this_cu) | |
dee91e82 | 7437 | { |
ed2dc618 | 7438 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7439 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7440 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7441 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7442 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7443 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7444 | |
b4f54984 | 7445 | if (dwarf_die_debug) |
9d8780f0 | 7446 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7447 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7448 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7449 | |
dee91e82 DE |
7450 | gdb_assert (this_cu->cu == NULL); |
7451 | ||
33e80786 DE |
7452 | abbrev_section = (dwo_file != NULL |
7453 | ? &dwo_file->sections.abbrev | |
7454 | : get_abbrev_section_for_cu (this_cu)); | |
7455 | ||
dee91e82 | 7456 | /* This is cheap if the section is already read in. */ |
96b79293 | 7457 | section->read (objfile); |
dee91e82 | 7458 | |
c0ab21c2 | 7459 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7460 | |
9c541725 | 7461 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7462 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7463 | &m_new_cu->header, section, |
4bdcc0c1 | 7464 | abbrev_section, info_ptr, |
43988095 JK |
7465 | (this_cu->is_debug_types |
7466 | ? rcuh_kind::TYPE | |
7467 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7468 | |
18a8505e AT |
7469 | if (parent_cu != nullptr) |
7470 | { | |
c0ab21c2 TT |
7471 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7472 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7473 | } |
c0ab21c2 | 7474 | this_cu->length = get_cu_length (&m_new_cu->header); |
dee91e82 DE |
7475 | |
7476 | /* Skip dummy compilation units. */ | |
7477 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7478 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7479 | { |
7480 | dummy_p = true; | |
7481 | return; | |
7482 | } | |
72bf9492 | 7483 | |
c0ab21c2 | 7484 | m_abbrev_table_holder |
3054dd54 | 7485 | = abbrev_table_read_table (objfile, abbrev_section, |
c0ab21c2 | 7486 | m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7487 | |
c0ab21c2 TT |
7488 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7489 | m_abbrev_table_holder.get ()); | |
3e225074 | 7490 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7491 | } |
7492 | ||
0018ea6f DE |
7493 | \f |
7494 | /* Type Unit Groups. | |
dee91e82 | 7495 | |
0018ea6f DE |
7496 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7497 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7498 | so that all types coming from the same compilation (.o file) are grouped | |
7499 | together. A future step could be to put the types in the same symtab as | |
7500 | the CU the types ultimately came from. */ | |
ff013f42 | 7501 | |
f4dc4d17 DE |
7502 | static hashval_t |
7503 | hash_type_unit_group (const void *item) | |
7504 | { | |
9a3c8263 SM |
7505 | const struct type_unit_group *tu_group |
7506 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7507 | |
094b34ac | 7508 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7509 | } |
348e048f DE |
7510 | |
7511 | static int | |
f4dc4d17 | 7512 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7513 | { |
9a3c8263 SM |
7514 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7515 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7516 | |
094b34ac | 7517 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7518 | } |
348e048f | 7519 | |
f4dc4d17 DE |
7520 | /* Allocate a hash table for type unit groups. */ |
7521 | ||
7522 | static htab_t | |
ed2dc618 | 7523 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7524 | { |
7525 | return htab_create_alloc_ex (3, | |
7526 | hash_type_unit_group, | |
7527 | eq_type_unit_group, | |
7528 | NULL, | |
ed2dc618 | 7529 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7530 | hashtab_obstack_allocate, |
7531 | dummy_obstack_deallocate); | |
7532 | } | |
dee91e82 | 7533 | |
f4dc4d17 DE |
7534 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7535 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7536 | of any one psymtab grow too big. */ | |
7537 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7538 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7539 | |
094b34ac | 7540 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7541 | Create the type_unit_group object used to hold one or more TUs. */ |
7542 | ||
7543 | static struct type_unit_group * | |
094b34ac | 7544 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7545 | { |
518817b3 SM |
7546 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7547 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7548 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7549 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7550 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7551 | |
7552 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7553 | struct type_unit_group); | |
094b34ac | 7554 | per_cu = &tu_group->per_cu; |
518817b3 | 7555 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7556 | |
094b34ac DE |
7557 | if (dwarf2_per_objfile->using_index) |
7558 | { | |
7559 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7560 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7561 | } |
7562 | else | |
7563 | { | |
9c541725 | 7564 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7565 | dwarf2_psymtab *pst; |
528e1572 | 7566 | std::string name; |
094b34ac DE |
7567 | |
7568 | /* Give the symtab a useful name for debug purposes. */ | |
7569 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7570 | name = string_printf ("<type_units_%d>", |
7571 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7572 | else |
528e1572 | 7573 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7574 | |
528e1572 | 7575 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7576 | pst->anonymous = true; |
094b34ac | 7577 | } |
f4dc4d17 | 7578 | |
094b34ac | 7579 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7580 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7581 | |
7582 | return tu_group; | |
7583 | } | |
7584 | ||
094b34ac DE |
7585 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7586 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7587 | |
7588 | static struct type_unit_group * | |
ff39bb5e | 7589 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7590 | { |
518817b3 SM |
7591 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7592 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7593 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7594 | struct type_unit_group *tu_group; | |
7595 | void **slot; | |
7596 | unsigned int line_offset; | |
7597 | struct type_unit_group type_unit_group_for_lookup; | |
7598 | ||
7599 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7600 | { | |
7601 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7602 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7603 | } |
7604 | ||
7605 | /* Do we need to create a new group, or can we use an existing one? */ | |
7606 | ||
7607 | if (stmt_list) | |
7608 | { | |
7609 | line_offset = DW_UNSND (stmt_list); | |
7610 | ++tu_stats->nr_symtab_sharers; | |
7611 | } | |
7612 | else | |
7613 | { | |
7614 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7615 | We can do various things here like create one group per TU or | |
7616 | spread them over multiple groups to split up the expansion work. | |
7617 | To avoid worst case scenarios (too many groups or too large groups) | |
7618 | we, umm, group them in bunches. */ | |
7619 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7620 | | (tu_stats->nr_stmt_less_type_units | |
7621 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7622 | ++tu_stats->nr_stmt_less_type_units; | |
7623 | } | |
7624 | ||
094b34ac | 7625 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7626 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7627 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7628 | &type_unit_group_for_lookup, INSERT); | |
7629 | if (*slot != NULL) | |
7630 | { | |
9a3c8263 | 7631 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7632 | gdb_assert (tu_group != NULL); |
7633 | } | |
7634 | else | |
7635 | { | |
9c541725 | 7636 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7637 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7638 | *slot = tu_group; |
7639 | ++tu_stats->nr_symtabs; | |
7640 | } | |
7641 | ||
7642 | return tu_group; | |
7643 | } | |
0018ea6f DE |
7644 | \f |
7645 | /* Partial symbol tables. */ | |
7646 | ||
7647 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7648 | ||
7649 | The caller must fill in the following details: | |
7650 | dirname, textlow, texthigh. */ | |
7651 | ||
891813be | 7652 | static dwarf2_psymtab * |
0018ea6f DE |
7653 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7654 | { | |
e3b94546 | 7655 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7656 | dwarf2_psymtab *pst; |
0018ea6f | 7657 | |
891813be | 7658 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 7659 | |
6d94535f | 7660 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7661 | |
7662 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 7663 | pst->per_cu_data = per_cu; |
0018ea6f DE |
7664 | per_cu->v.psymtab = pst; |
7665 | ||
7666 | return pst; | |
7667 | } | |
7668 | ||
c0ab21c2 | 7669 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7670 | |
7671 | static void | |
7672 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7673 | const gdb_byte *info_ptr, |
0018ea6f | 7674 | struct die_info *comp_unit_die, |
c0ab21c2 TT |
7675 | int want_partial_unit, |
7676 | enum language pretend_language) | |
0018ea6f DE |
7677 | { |
7678 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7679 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7680 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7681 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7682 | CORE_ADDR baseaddr; |
7683 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7684 | dwarf2_psymtab *pst; |
3a2b436a | 7685 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7686 | const char *filename; |
0018ea6f | 7687 | |
c0ab21c2 | 7688 | if (comp_unit_die->tag == DW_TAG_partial_unit && !want_partial_unit) |
0018ea6f DE |
7689 | return; |
7690 | ||
7691 | gdb_assert (! per_cu->is_debug_types); | |
7692 | ||
c0ab21c2 | 7693 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7694 | |
0018ea6f | 7695 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
7696 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7697 | if (filename == NULL) | |
0018ea6f | 7698 | filename = ""; |
0018ea6f DE |
7699 | |
7700 | pst = create_partial_symtab (per_cu, filename); | |
7701 | ||
7702 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7703 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7704 | |
b3b3bada | 7705 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7706 | |
7707 | dwarf2_find_base_address (comp_unit_die, cu); | |
7708 | ||
7709 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7710 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7711 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7712 | &best_highpc, cu, pst); | |
7713 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7714 | { |
7715 | CORE_ADDR low | |
7716 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7717 | - baseaddr); | |
7718 | CORE_ADDR high | |
7719 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7720 | - baseaddr - 1); | |
7721 | /* Store the contiguous range if it is not empty; it can be | |
7722 | empty for CUs with no code. */ | |
d320c2b5 TT |
7723 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7724 | low, high, pst); | |
79748972 | 7725 | } |
0018ea6f DE |
7726 | |
7727 | /* Check if comp unit has_children. | |
7728 | If so, read the rest of the partial symbols from this comp unit. | |
7729 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7730 | if (comp_unit_die->has_children) |
0018ea6f DE |
7731 | { |
7732 | struct partial_die_info *first_die; | |
7733 | CORE_ADDR lowpc, highpc; | |
7734 | ||
7735 | lowpc = ((CORE_ADDR) -1); | |
7736 | highpc = ((CORE_ADDR) 0); | |
7737 | ||
7738 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7739 | ||
7740 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7741 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7742 | |
7743 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7744 | complaints from `maint check'. */ | |
7745 | if (lowpc == ((CORE_ADDR) -1)) | |
7746 | lowpc = highpc; | |
7747 | ||
7748 | /* If the compilation unit didn't have an explicit address range, | |
7749 | then use the information extracted from its child dies. */ | |
e385593e | 7750 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7751 | { |
7752 | best_lowpc = lowpc; | |
7753 | best_highpc = highpc; | |
7754 | } | |
7755 | } | |
4ae976d1 | 7756 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7757 | best_lowpc + baseaddr) |
7758 | - baseaddr); | |
4ae976d1 | 7759 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7760 | best_highpc + baseaddr) |
7761 | - baseaddr); | |
0018ea6f | 7762 | |
8763cede | 7763 | end_psymtab_common (objfile, pst); |
0018ea6f | 7764 | |
ae640021 | 7765 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7766 | { |
7767 | int i; | |
ae640021 | 7768 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7769 | |
7770 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7771 | post-pass. */ | |
7772 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7773 | pst->dependencies |
7774 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7775 | for (i = 0; i < len; ++i) |
7776 | { | |
7777 | pst->dependencies[i] | |
7778 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7779 | } | |
0018ea6f | 7780 | |
ae640021 | 7781 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7782 | } |
7783 | ||
7784 | /* Get the list of files included in the current compilation unit, | |
7785 | and build a psymtab for each of them. */ | |
7786 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7787 | ||
b4f54984 | 7788 | if (dwarf_read_debug) |
b926417a TT |
7789 | fprintf_unfiltered (gdb_stdlog, |
7790 | "Psymtab for %s unit @%s: %s - %s" | |
7791 | ", %d global, %d static syms\n", | |
7792 | per_cu->is_debug_types ? "type" : "comp", | |
7793 | sect_offset_str (per_cu->sect_off), | |
7794 | paddress (gdbarch, pst->text_low (objfile)), | |
7795 | paddress (gdbarch, pst->text_high (objfile)), | |
7796 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7797 | } |
7798 | ||
7799 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7800 | Process compilation unit THIS_CU for a psymtab. */ | |
7801 | ||
7802 | static void | |
7803 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
7804 | int want_partial_unit, |
7805 | enum language pretend_language) | |
0018ea6f DE |
7806 | { |
7807 | /* If this compilation unit was already read in, free the | |
7808 | cached copy in order to read it in again. This is | |
7809 | necessary because we skipped some symbols when we first | |
7810 | read in the compilation unit (see load_partial_dies). | |
7811 | This problem could be avoided, but the benefit is unclear. */ | |
7812 | if (this_cu->cu != NULL) | |
7813 | free_one_cached_comp_unit (this_cu); | |
7814 | ||
c0ab21c2 TT |
7815 | cutu_reader reader (this_cu, NULL, 0, 0, false); |
7816 | ||
7817 | if (reader.dummy_p) | |
f1902523 | 7818 | { |
c0ab21c2 | 7819 | /* Nothing. */ |
f1902523 | 7820 | } |
c0ab21c2 | 7821 | else if (this_cu->is_debug_types) |
3e225074 TT |
7822 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7823 | reader.comp_unit_die); | |
c0ab21c2 TT |
7824 | else |
7825 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, | |
7826 | reader.comp_unit_die, | |
c0ab21c2 TT |
7827 | want_partial_unit, |
7828 | pretend_language); | |
0018ea6f DE |
7829 | |
7830 | /* Age out any secondary CUs. */ | |
ed2dc618 | 7831 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7832 | } |
f4dc4d17 DE |
7833 | |
7834 | /* Reader function for build_type_psymtabs. */ | |
7835 | ||
7836 | static void | |
7837 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7838 | const gdb_byte *info_ptr, |
3e225074 | 7839 | struct die_info *type_unit_die) |
f4dc4d17 | 7840 | { |
ed2dc618 | 7841 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7842 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7843 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7844 | struct dwarf2_cu *cu = reader->cu; | |
7845 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7846 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7847 | struct type_unit_group *tu_group; |
7848 | struct attribute *attr; | |
7849 | struct partial_die_info *first_die; | |
7850 | CORE_ADDR lowpc, highpc; | |
891813be | 7851 | dwarf2_psymtab *pst; |
f4dc4d17 | 7852 | |
0186c6a7 DE |
7853 | gdb_assert (per_cu->is_debug_types); |
7854 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7855 | |
3e225074 | 7856 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7857 | return; |
7858 | ||
7859 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 7860 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7861 | |
df07e2c7 | 7862 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7863 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7864 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7865 | |
7866 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7867 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7868 | pst->anonymous = true; |
f4dc4d17 DE |
7869 | |
7870 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7871 | ||
7872 | lowpc = (CORE_ADDR) -1; | |
7873 | highpc = (CORE_ADDR) 0; | |
7874 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7875 | ||
8763cede | 7876 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7877 | } |
7878 | ||
73051182 DE |
7879 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7880 | ||
7881 | struct tu_abbrev_offset | |
7882 | { | |
b2bdb8cf SM |
7883 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7884 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7885 | {} | |
7886 | ||
7887 | signatured_type *sig_type; | |
73051182 DE |
7888 | sect_offset abbrev_offset; |
7889 | }; | |
7890 | ||
484cf504 | 7891 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7892 | |
484cf504 TT |
7893 | static bool |
7894 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7895 | const struct tu_abbrev_offset &b) | |
73051182 | 7896 | { |
484cf504 | 7897 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7898 | } |
7899 | ||
7900 | /* Efficiently read all the type units. | |
7901 | This does the bulk of the work for build_type_psymtabs. | |
7902 | ||
7903 | The efficiency is because we sort TUs by the abbrev table they use and | |
7904 | only read each abbrev table once. In one program there are 200K TUs | |
7905 | sharing 8K abbrev tables. | |
7906 | ||
7907 | The main purpose of this function is to support building the | |
7908 | dwarf2_per_objfile->type_unit_groups table. | |
7909 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7910 | can collapse the search space by grouping them by stmt_list. | |
7911 | The savings can be significant, in the same program from above the 200K TUs | |
7912 | share 8K stmt_list tables. | |
7913 | ||
7914 | FUNC is expected to call get_type_unit_group, which will create the | |
7915 | struct type_unit_group if necessary and add it to | |
7916 | dwarf2_per_objfile->type_unit_groups. */ | |
7917 | ||
7918 | static void | |
ed2dc618 | 7919 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7920 | { |
73051182 | 7921 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7922 | abbrev_table_up abbrev_table; |
73051182 | 7923 | sect_offset abbrev_offset; |
73051182 DE |
7924 | |
7925 | /* It's up to the caller to not call us multiple times. */ | |
7926 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7927 | ||
b2bdb8cf | 7928 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7929 | return; |
7930 | ||
7931 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7932 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7933 | read each abbrev table in. | |
7934 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7935 | This is simpler and efficient enough for now. | |
7936 | ||
7937 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7938 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7939 | stmt_list value too so in practice this should work well. | |
7940 | ||
7941 | The basic algorithm here is: | |
7942 | ||
7943 | sort TUs by abbrev table | |
7944 | for each TU with same abbrev table: | |
7945 | read abbrev table if first user | |
7946 | read TU top level DIE | |
7947 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7948 | call FUNC */ | |
7949 | ||
b4f54984 | 7950 | if (dwarf_read_debug) |
73051182 DE |
7951 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7952 | ||
7953 | /* Sort in a separate table to maintain the order of all_type_units | |
7954 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7955 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7956 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7957 | ||
7958 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7959 | sorted_by_abbrev.emplace_back | |
7960 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7961 | sig_type->per_cu.section, | |
7962 | sig_type->per_cu.sect_off)); | |
73051182 | 7963 | |
484cf504 TT |
7964 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7965 | sort_tu_by_abbrev_offset); | |
73051182 | 7966 | |
9c541725 | 7967 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7968 | |
b2bdb8cf | 7969 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7970 | { |
73051182 DE |
7971 | /* Switch to the next abbrev table if necessary. */ |
7972 | if (abbrev_table == NULL | |
b2bdb8cf | 7973 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7974 | { |
b2bdb8cf | 7975 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7976 | abbrev_table = |
3054dd54 | 7977 | abbrev_table_read_table (dwarf2_per_objfile->objfile, |
ed2dc618 | 7978 | &dwarf2_per_objfile->abbrev, |
73051182 DE |
7979 | abbrev_offset); |
7980 | ++tu_stats->nr_uniq_abbrev_tables; | |
7981 | } | |
7982 | ||
c0ab21c2 TT |
7983 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
7984 | 0, 0, false); | |
7985 | if (!reader.dummy_p) | |
7986 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7987 | reader.comp_unit_die); |
73051182 | 7988 | } |
6aa5f3a6 | 7989 | } |
73051182 | 7990 | |
6aa5f3a6 DE |
7991 | /* Print collected type unit statistics. */ |
7992 | ||
7993 | static void | |
ed2dc618 | 7994 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7995 | { |
7996 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
7997 | ||
7998 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
7999 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8000 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8001 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8002 | tu_stats->nr_uniq_abbrev_tables); | |
8003 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8004 | tu_stats->nr_symtabs); | |
8005 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8006 | tu_stats->nr_symtab_sharers); | |
8007 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8008 | tu_stats->nr_stmt_less_type_units); | |
8009 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8010 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8011 | } |
8012 | ||
f4dc4d17 DE |
8013 | /* Traversal function for build_type_psymtabs. */ |
8014 | ||
8015 | static int | |
8016 | build_type_psymtab_dependencies (void **slot, void *info) | |
8017 | { | |
ed2dc618 SM |
8018 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8019 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8020 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8021 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8022 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8023 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8024 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8025 | int i; |
8026 | ||
8027 | gdb_assert (len > 0); | |
0186c6a7 | 8028 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8029 | |
8030 | pst->number_of_dependencies = len; | |
a9342b62 | 8031 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8032 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8033 | { |
df07e2c7 | 8034 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8035 | gdb_assert (iter->per_cu.is_debug_types); |
8036 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8037 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8038 | } |
8039 | ||
df07e2c7 AB |
8040 | delete tu_group->tus; |
8041 | tu_group->tus = nullptr; | |
348e048f DE |
8042 | |
8043 | return 1; | |
8044 | } | |
8045 | ||
8046 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8047 | Build partial symbol tables for the .debug_types comp-units. */ | |
8048 | ||
8049 | static void | |
ed2dc618 | 8050 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8051 | { |
ed2dc618 | 8052 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8053 | return; |
8054 | ||
ed2dc618 | 8055 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8056 | } |
f4dc4d17 | 8057 | |
6aa5f3a6 DE |
8058 | /* Traversal function for process_skeletonless_type_unit. |
8059 | Read a TU in a DWO file and build partial symbols for it. */ | |
8060 | ||
8061 | static int | |
8062 | process_skeletonless_type_unit (void **slot, void *info) | |
8063 | { | |
8064 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8065 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8066 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8067 | struct signatured_type find_entry, *entry; |
8068 | ||
8069 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8070 | ||
8071 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8072 | { | |
8073 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8074 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8075 | } |
8076 | ||
8077 | find_entry.signature = dwo_unit->signature; | |
8078 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8079 | INSERT); | |
8080 | /* If we've already seen this type there's nothing to do. What's happening | |
8081 | is we're doing our own version of comdat-folding here. */ | |
8082 | if (*slot != NULL) | |
8083 | return 1; | |
8084 | ||
8085 | /* This does the job that create_all_type_units would have done for | |
8086 | this TU. */ | |
ed2dc618 SM |
8087 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8088 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8089 | *slot = entry; |
8090 | ||
8091 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
c0ab21c2 TT |
8092 | cutu_reader reader (&entry->per_cu, NULL, 0, 0, false); |
8093 | if (!reader.dummy_p) | |
8094 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 8095 | reader.comp_unit_die); |
6aa5f3a6 DE |
8096 | |
8097 | return 1; | |
8098 | } | |
8099 | ||
8100 | /* Traversal function for process_skeletonless_type_units. */ | |
8101 | ||
8102 | static int | |
8103 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8104 | { | |
8105 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8106 | ||
8107 | if (dwo_file->tus != NULL) | |
8108 | { | |
8109 | htab_traverse_noresize (dwo_file->tus, | |
8110 | process_skeletonless_type_unit, info); | |
8111 | } | |
8112 | ||
8113 | return 1; | |
8114 | } | |
8115 | ||
8116 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8117 | This is needed in case a TU was emitted without its skeleton. | |
8118 | Note: This can't be done until we know what all the DWO files are. */ | |
8119 | ||
8120 | static void | |
ed2dc618 | 8121 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8122 | { |
8123 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8124 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8125 | && dwarf2_per_objfile->dwo_files != NULL) |
8126 | { | |
51ac9db5 | 8127 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 8128 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 8129 | dwarf2_per_objfile); |
6aa5f3a6 | 8130 | } |
348e048f DE |
8131 | } |
8132 | ||
ed2dc618 | 8133 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8134 | |
8135 | static void | |
ed2dc618 | 8136 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8137 | { |
b76e467d | 8138 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8139 | { |
891813be | 8140 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8141 | |
36586728 TT |
8142 | if (pst == NULL) |
8143 | continue; | |
8144 | ||
b76e467d | 8145 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8146 | { |
8147 | /* Set the 'user' field only if it is not already set. */ | |
8148 | if (pst->dependencies[j]->user == NULL) | |
8149 | pst->dependencies[j]->user = pst; | |
8150 | } | |
8151 | } | |
8152 | } | |
8153 | ||
93311388 DE |
8154 | /* Build the partial symbol table by doing a quick pass through the |
8155 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8156 | |
93311388 | 8157 | static void |
ed2dc618 | 8158 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8159 | { |
ed2dc618 | 8160 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8161 | |
b4f54984 | 8162 | if (dwarf_read_debug) |
45cfd468 DE |
8163 | { |
8164 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8165 | objfile_name (objfile)); |
45cfd468 DE |
8166 | } |
8167 | ||
98bfdba5 PA |
8168 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8169 | ||
96b79293 | 8170 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 8171 | |
93311388 DE |
8172 | /* Any cached compilation units will be linked by the per-objfile |
8173 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8174 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8175 | |
ed2dc618 | 8176 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8177 | |
ed2dc618 | 8178 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8179 | |
60606b2c TT |
8180 | /* Create a temporary address map on a temporary obstack. We later |
8181 | copy this to the final obstack. */ | |
8268c778 | 8182 | auto_obstack temp_obstack; |
791afaa2 TT |
8183 | |
8184 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8185 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8186 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8187 | |
b76e467d SM |
8188 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8189 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8190 | |
6aa5f3a6 | 8191 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8192 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8193 | |
8194 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8195 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8196 | { | |
8197 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8198 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8199 | } |
8200 | ||
b4f54984 | 8201 | if (dwarf_read_debug) |
ed2dc618 | 8202 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8203 | |
ed2dc618 | 8204 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8205 | |
d320c2b5 TT |
8206 | objfile->partial_symtabs->psymtabs_addrmap |
8207 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8208 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8209 | /* At this point we want to keep the address map. */ |
8210 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8211 | |
b4f54984 | 8212 | if (dwarf_read_debug) |
45cfd468 | 8213 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8214 | objfile_name (objfile)); |
ae038cb0 DJ |
8215 | } |
8216 | ||
dee91e82 DE |
8217 | /* Load the partial DIEs for a secondary CU into memory. |
8218 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8219 | |
dee91e82 DE |
8220 | static void |
8221 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8222 | { | |
c0ab21c2 TT |
8223 | cutu_reader reader (this_cu, NULL, 1, 1, false); |
8224 | ||
8225 | if (!reader.dummy_p) | |
8226 | { | |
8227 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8228 | language_minimal); | |
8229 | ||
8230 | /* Check if comp unit has_children. | |
8231 | If so, read the rest of the partial symbols from this comp unit. | |
8232 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8233 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8234 | load_partial_dies (&reader, reader.info_ptr, 0); |
8235 | } | |
ae038cb0 DJ |
8236 | } |
8237 | ||
ae038cb0 | 8238 | static void |
ed2dc618 | 8239 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8240 | struct dwarf2_section_info *section, |
f1902523 | 8241 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8242 | unsigned int is_dwz) |
ae038cb0 | 8243 | { |
d521ce57 | 8244 | const gdb_byte *info_ptr; |
ed2dc618 | 8245 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8246 | |
b4f54984 | 8247 | if (dwarf_read_debug) |
bf6af496 | 8248 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8249 | section->get_name (), |
8250 | section->get_file_name ()); | |
bf6af496 | 8251 | |
96b79293 | 8252 | section->read (objfile); |
ae038cb0 | 8253 | |
36586728 | 8254 | info_ptr = section->buffer; |
6e70227d | 8255 | |
36586728 | 8256 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8257 | { |
ae038cb0 | 8258 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8259 | |
9c541725 | 8260 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8261 | |
f1902523 | 8262 | comp_unit_head cu_header; |
ed2dc618 SM |
8263 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8264 | abbrev_section, info_ptr, | |
8265 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8266 | |
8267 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8268 | if (cu_header.unit_type != DW_UT_type) |
8269 | { | |
8270 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8271 | struct dwarf2_per_cu_data); | |
8272 | memset (this_cu, 0, sizeof (*this_cu)); | |
8273 | } | |
8274 | else | |
8275 | { | |
8276 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8277 | struct signatured_type); | |
8278 | memset (sig_type, 0, sizeof (*sig_type)); | |
8279 | sig_type->signature = cu_header.signature; | |
8280 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8281 | this_cu = &sig_type->per_cu; | |
8282 | } | |
8283 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8284 | this_cu->sect_off = sect_off; |
f1902523 | 8285 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8286 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8287 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8288 | this_cu->section = section; |
ae038cb0 | 8289 | |
b76e467d | 8290 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8291 | |
8292 | info_ptr = info_ptr + this_cu->length; | |
8293 | } | |
36586728 TT |
8294 | } |
8295 | ||
8296 | /* Create a list of all compilation units in OBJFILE. | |
8297 | This is only done for -readnow and building partial symtabs. */ | |
8298 | ||
8299 | static void | |
ed2dc618 | 8300 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8301 | { |
b76e467d | 8302 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8303 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8304 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8305 | |
b76e467d | 8306 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8307 | if (dwz != NULL) |
ed2dc618 | 8308 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8309 | 1); |
c906108c SS |
8310 | } |
8311 | ||
5734ee8b | 8312 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8313 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8314 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8315 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8316 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8317 | |
72bf9492 DJ |
8318 | static void |
8319 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8320 | CORE_ADDR *highpc, int set_addrmap, |
8321 | struct dwarf2_cu *cu) | |
c906108c | 8322 | { |
72bf9492 | 8323 | struct partial_die_info *pdi; |
c906108c | 8324 | |
91c24f0a DC |
8325 | /* Now, march along the PDI's, descending into ones which have |
8326 | interesting children but skipping the children of the other ones, | |
8327 | until we reach the end of the compilation unit. */ | |
c906108c | 8328 | |
72bf9492 | 8329 | pdi = first_die; |
91c24f0a | 8330 | |
72bf9492 DJ |
8331 | while (pdi != NULL) |
8332 | { | |
52356b79 | 8333 | pdi->fixup (cu); |
c906108c | 8334 | |
f55ee35c | 8335 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8336 | children, so we need to look at them. Ditto for anonymous |
8337 | enums. */ | |
933c6fe4 | 8338 | |
72bf9492 | 8339 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8340 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8341 | || pdi->tag == DW_TAG_imported_unit |
8342 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8343 | { |
72bf9492 | 8344 | switch (pdi->tag) |
c906108c SS |
8345 | { |
8346 | case DW_TAG_subprogram: | |
b1dc1806 | 8347 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8348 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8349 | break; |
72929c62 | 8350 | case DW_TAG_constant: |
c906108c SS |
8351 | case DW_TAG_variable: |
8352 | case DW_TAG_typedef: | |
91c24f0a | 8353 | case DW_TAG_union_type: |
72bf9492 | 8354 | if (!pdi->is_declaration) |
63d06c5c | 8355 | { |
72bf9492 | 8356 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8357 | } |
8358 | break; | |
c906108c | 8359 | case DW_TAG_class_type: |
680b30c7 | 8360 | case DW_TAG_interface_type: |
c906108c | 8361 | case DW_TAG_structure_type: |
72bf9492 | 8362 | if (!pdi->is_declaration) |
c906108c | 8363 | { |
72bf9492 | 8364 | add_partial_symbol (pdi, cu); |
c906108c | 8365 | } |
b7fee5a3 KS |
8366 | if ((cu->language == language_rust |
8367 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8368 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8369 | set_addrmap, cu); | |
c906108c | 8370 | break; |
91c24f0a | 8371 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8372 | if (!pdi->is_declaration) |
8373 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8374 | break; |
8375 | case DW_TAG_base_type: | |
a02abb62 | 8376 | case DW_TAG_subrange_type: |
c906108c | 8377 | /* File scope base type definitions are added to the partial |
c5aa993b | 8378 | symbol table. */ |
72bf9492 | 8379 | add_partial_symbol (pdi, cu); |
c906108c | 8380 | break; |
d9fa45fe | 8381 | case DW_TAG_namespace: |
cdc07690 | 8382 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8383 | break; |
5d7cb8df | 8384 | case DW_TAG_module: |
59c35742 AB |
8385 | if (!pdi->is_declaration) |
8386 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8387 | break; |
95554aad TT |
8388 | case DW_TAG_imported_unit: |
8389 | { | |
8390 | struct dwarf2_per_cu_data *per_cu; | |
8391 | ||
f4dc4d17 DE |
8392 | /* For now we don't handle imported units in type units. */ |
8393 | if (cu->per_cu->is_debug_types) | |
8394 | { | |
8395 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8396 | " supported in type units [in module %s]"), | |
518817b3 | 8397 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8398 | } |
8399 | ||
e3b94546 SM |
8400 | per_cu = dwarf2_find_containing_comp_unit |
8401 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8402 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8403 | |
8404 | /* Go read the partial unit, if needed. */ | |
8405 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8406 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8407 | |
ae640021 | 8408 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8409 | } |
8410 | break; | |
74921315 KS |
8411 | case DW_TAG_imported_declaration: |
8412 | add_partial_symbol (pdi, cu); | |
8413 | break; | |
c906108c SS |
8414 | default: |
8415 | break; | |
8416 | } | |
8417 | } | |
8418 | ||
72bf9492 DJ |
8419 | /* If the die has a sibling, skip to the sibling. */ |
8420 | ||
8421 | pdi = pdi->die_sibling; | |
8422 | } | |
8423 | } | |
8424 | ||
8425 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8426 | |
72bf9492 | 8427 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8428 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8429 | Enumerators are an exception; they use the scope of their parent |
8430 | enumeration type, i.e. the name of the enumeration type is not | |
8431 | prepended to the enumerator. | |
91c24f0a | 8432 | |
72bf9492 DJ |
8433 | There are two complexities. One is DW_AT_specification; in this |
8434 | case "parent" means the parent of the target of the specification, | |
8435 | instead of the direct parent of the DIE. The other is compilers | |
8436 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8437 | the fully qualified name of structure types from their members' | |
8438 | linkage names. This must be done using the DIE's children rather | |
8439 | than the children of any DW_AT_specification target. We only need | |
8440 | to do this for structures at the top level, i.e. if the target of | |
8441 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8442 | have a parent. */ | |
8443 | ||
8444 | /* Compute the scope prefix associated with PDI's parent, in | |
8445 | compilation unit CU. The result will be allocated on CU's | |
8446 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8447 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8448 | static const char * |
72bf9492 DJ |
8449 | partial_die_parent_scope (struct partial_die_info *pdi, |
8450 | struct dwarf2_cu *cu) | |
8451 | { | |
15d034d0 | 8452 | const char *grandparent_scope; |
72bf9492 | 8453 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8454 | |
72bf9492 DJ |
8455 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8456 | then this means the parent of the specification DIE. */ | |
8457 | ||
8458 | real_pdi = pdi; | |
72bf9492 | 8459 | while (real_pdi->has_specification) |
fb816e8b | 8460 | { |
122cf0f2 AB |
8461 | auto res = find_partial_die (real_pdi->spec_offset, |
8462 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8463 | real_pdi = res.pdi; |
8464 | cu = res.cu; | |
8465 | } | |
72bf9492 DJ |
8466 | |
8467 | parent = real_pdi->die_parent; | |
8468 | if (parent == NULL) | |
8469 | return NULL; | |
8470 | ||
8471 | if (parent->scope_set) | |
8472 | return parent->scope; | |
8473 | ||
52356b79 | 8474 | parent->fixup (cu); |
72bf9492 | 8475 | |
10b3939b | 8476 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8477 | |
acebe513 UW |
8478 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8479 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8480 | Work around this problem here. */ | |
8481 | if (cu->language == language_cplus | |
6e70227d | 8482 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8483 | && strcmp (parent->name, "::") == 0 |
8484 | && grandparent_scope == NULL) | |
8485 | { | |
8486 | parent->scope = NULL; | |
8487 | parent->scope_set = 1; | |
8488 | return NULL; | |
8489 | } | |
8490 | ||
0a4b0913 | 8491 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8492 | if (pdi->tag == DW_TAG_enumerator) |
8493 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8494 | parent->scope = grandparent_scope; | |
8495 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8496 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8497 | || parent->tag == DW_TAG_structure_type |
8498 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8499 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8500 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8501 | || parent->tag == DW_TAG_enumeration_type |
8502 | || (cu->language == language_fortran | |
8503 | && parent->tag == DW_TAG_subprogram | |
8504 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8505 | { |
8506 | if (grandparent_scope == NULL) | |
8507 | parent->scope = parent->name; | |
8508 | else | |
3e43a32a MS |
8509 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8510 | grandparent_scope, | |
f55ee35c | 8511 | parent->name, 0, cu); |
72bf9492 | 8512 | } |
72bf9492 DJ |
8513 | else |
8514 | { | |
8515 | /* FIXME drow/2004-04-01: What should we be doing with | |
8516 | function-local names? For partial symbols, we should probably be | |
8517 | ignoring them. */ | |
fa9c3fa0 TT |
8518 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8519 | dwarf_tag_name (parent->tag), | |
8520 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8521 | parent->scope = grandparent_scope; |
c906108c SS |
8522 | } |
8523 | ||
72bf9492 DJ |
8524 | parent->scope_set = 1; |
8525 | return parent->scope; | |
8526 | } | |
8527 | ||
8528 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8529 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8530 | |
43816ebc | 8531 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8532 | partial_die_full_name (struct partial_die_info *pdi, |
8533 | struct dwarf2_cu *cu) | |
8534 | { | |
15d034d0 | 8535 | const char *parent_scope; |
72bf9492 | 8536 | |
98bfdba5 PA |
8537 | /* If this is a template instantiation, we can not work out the |
8538 | template arguments from partial DIEs. So, unfortunately, we have | |
8539 | to go through the full DIEs. At least any work we do building | |
8540 | types here will be reused if full symbols are loaded later. */ | |
8541 | if (pdi->has_template_arguments) | |
8542 | { | |
52356b79 | 8543 | pdi->fixup (cu); |
98bfdba5 PA |
8544 | |
8545 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8546 | { | |
8547 | struct die_info *die; | |
8548 | struct attribute attr; | |
8549 | struct dwarf2_cu *ref_cu = cu; | |
8550 | ||
b64f50a1 | 8551 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8552 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8553 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8554 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8555 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8556 | ||
43816ebc | 8557 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8558 | } |
8559 | } | |
8560 | ||
72bf9492 DJ |
8561 | parent_scope = partial_die_parent_scope (pdi, cu); |
8562 | if (parent_scope == NULL) | |
8563 | return NULL; | |
8564 | else | |
43816ebc TT |
8565 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8566 | pdi->name, 0, cu)); | |
c906108c SS |
8567 | } |
8568 | ||
8569 | static void | |
72bf9492 | 8570 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8571 | { |
518817b3 SM |
8572 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8573 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8574 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8575 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8576 | CORE_ADDR addr = 0; |
15d034d0 | 8577 | const char *actual_name = NULL; |
e142c38c DJ |
8578 | CORE_ADDR baseaddr; |
8579 | ||
b3b3bada | 8580 | baseaddr = objfile->text_section_offset (); |
c906108c | 8581 | |
43816ebc TT |
8582 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8583 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8584 | if (built_actual_name != NULL) |
43816ebc | 8585 | actual_name = built_actual_name.get (); |
63d06c5c | 8586 | |
72bf9492 DJ |
8587 | if (actual_name == NULL) |
8588 | actual_name = pdi->name; | |
8589 | ||
c906108c SS |
8590 | switch (pdi->tag) |
8591 | { | |
b1dc1806 | 8592 | case DW_TAG_inlined_subroutine: |
c906108c | 8593 | case DW_TAG_subprogram: |
79748972 TT |
8594 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8595 | - baseaddr); | |
0a4b0913 AB |
8596 | if (pdi->is_external |
8597 | || cu->language == language_ada | |
8598 | || (cu->language == language_fortran | |
8599 | && pdi->die_parent != NULL | |
8600 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8601 | { | |
8602 | /* Normally, only "external" DIEs are part of the global scope. | |
8603 | But in Ada and Fortran, we want to be able to access nested | |
8604 | procedures globally. So all Ada and Fortran subprograms are | |
8605 | stored in the global scope. */ | |
31edb802 | 8606 | add_psymbol_to_list (actual_name, |
15d034d0 | 8607 | built_actual_name != NULL, |
f47fb265 | 8608 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8609 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8610 | psymbol_placement::GLOBAL, |
79748972 TT |
8611 | addr, |
8612 | cu->language, objfile); | |
c906108c SS |
8613 | } |
8614 | else | |
8615 | { | |
31edb802 | 8616 | add_psymbol_to_list (actual_name, |
15d034d0 | 8617 | built_actual_name != NULL, |
f47fb265 | 8618 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8619 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8620 | psymbol_placement::STATIC, |
1762568f | 8621 | addr, cu->language, objfile); |
c906108c | 8622 | } |
0c1b455e TT |
8623 | |
8624 | if (pdi->main_subprogram && actual_name != NULL) | |
8625 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8626 | break; |
72929c62 | 8627 | case DW_TAG_constant: |
31edb802 | 8628 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8629 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8630 | -1, (pdi->is_external | |
8631 | ? psymbol_placement::GLOBAL | |
8632 | : psymbol_placement::STATIC), | |
8633 | 0, cu->language, objfile); | |
72929c62 | 8634 | break; |
c906108c | 8635 | case DW_TAG_variable: |
95554aad TT |
8636 | if (pdi->d.locdesc) |
8637 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8638 | |
95554aad | 8639 | if (pdi->d.locdesc |
caac4577 JG |
8640 | && addr == 0 |
8641 | && !dwarf2_per_objfile->has_section_at_zero) | |
8642 | { | |
8643 | /* A global or static variable may also have been stripped | |
8644 | out by the linker if unused, in which case its address | |
8645 | will be nullified; do not add such variables into partial | |
8646 | symbol table then. */ | |
8647 | } | |
8648 | else if (pdi->is_external) | |
c906108c SS |
8649 | { |
8650 | /* Global Variable. | |
8651 | Don't enter into the minimal symbol tables as there is | |
8652 | a minimal symbol table entry from the ELF symbols already. | |
8653 | Enter into partial symbol table if it has a location | |
8654 | descriptor or a type. | |
8655 | If the location descriptor is missing, new_symbol will create | |
8656 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8657 | be determined from the minimal symbol table whenever the variable | |
8658 | is referenced. | |
8659 | The address for the partial symbol table entry is not | |
8660 | used by GDB, but it comes in handy for debugging partial symbol | |
8661 | table building. */ | |
8662 | ||
95554aad | 8663 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8664 | add_psymbol_to_list (actual_name, |
15d034d0 | 8665 | built_actual_name != NULL, |
f47fb265 | 8666 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8667 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8668 | psymbol_placement::GLOBAL, |
79748972 | 8669 | addr, cu->language, objfile); |
c906108c SS |
8670 | } |
8671 | else | |
8672 | { | |
ff908ebf AW |
8673 | int has_loc = pdi->d.locdesc != NULL; |
8674 | ||
8675 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8676 | without location descriptors or constant values). */ | |
8677 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8678 | return; |
ff908ebf | 8679 | |
31edb802 | 8680 | add_psymbol_to_list (actual_name, |
15d034d0 | 8681 | built_actual_name != NULL, |
f47fb265 | 8682 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8683 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8684 | psymbol_placement::STATIC, |
79748972 | 8685 | has_loc ? addr : 0, |
f47fb265 | 8686 | cu->language, objfile); |
c906108c SS |
8687 | } |
8688 | break; | |
8689 | case DW_TAG_typedef: | |
8690 | case DW_TAG_base_type: | |
a02abb62 | 8691 | case DW_TAG_subrange_type: |
31edb802 | 8692 | add_psymbol_to_list (actual_name, |
15d034d0 | 8693 | built_actual_name != NULL, |
79748972 | 8694 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8695 | psymbol_placement::STATIC, |
1762568f | 8696 | 0, cu->language, objfile); |
c906108c | 8697 | break; |
74921315 | 8698 | case DW_TAG_imported_declaration: |
72bf9492 | 8699 | case DW_TAG_namespace: |
31edb802 | 8700 | add_psymbol_to_list (actual_name, |
15d034d0 | 8701 | built_actual_name != NULL, |
79748972 | 8702 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8703 | psymbol_placement::GLOBAL, |
1762568f | 8704 | 0, cu->language, objfile); |
72bf9492 | 8705 | break; |
530e8392 | 8706 | case DW_TAG_module: |
a5fd13a9 BH |
8707 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8708 | available without any name. If so, we skip the module as it | |
8709 | doesn't bring any value. */ | |
8710 | if (actual_name != nullptr) | |
31edb802 | 8711 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8712 | built_actual_name != NULL, |
8713 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8714 | psymbol_placement::GLOBAL, | |
8715 | 0, cu->language, objfile); | |
530e8392 | 8716 | break; |
c906108c | 8717 | case DW_TAG_class_type: |
680b30c7 | 8718 | case DW_TAG_interface_type: |
c906108c SS |
8719 | case DW_TAG_structure_type: |
8720 | case DW_TAG_union_type: | |
8721 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8722 | /* Skip external references. The DWARF standard says in the section |
8723 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8724 | structure, union or class type is represented by a structure, | |
8725 | union or class entry that does not have a byte size attribute | |
8726 | and that has a DW_AT_declaration attribute." */ | |
8727 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8728 | return; |
fa4028e9 | 8729 | |
63d06c5c DC |
8730 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8731 | static vs. global. */ | |
31edb802 | 8732 | add_psymbol_to_list (actual_name, |
15d034d0 | 8733 | built_actual_name != NULL, |
79748972 | 8734 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8735 | cu->language == language_cplus |
75aedd27 TT |
8736 | ? psymbol_placement::GLOBAL |
8737 | : psymbol_placement::STATIC, | |
1762568f | 8738 | 0, cu->language, objfile); |
c906108c | 8739 | |
c906108c SS |
8740 | break; |
8741 | case DW_TAG_enumerator: | |
31edb802 | 8742 | add_psymbol_to_list (actual_name, |
15d034d0 | 8743 | built_actual_name != NULL, |
79748972 | 8744 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8745 | cu->language == language_cplus |
75aedd27 TT |
8746 | ? psymbol_placement::GLOBAL |
8747 | : psymbol_placement::STATIC, | |
1762568f | 8748 | 0, cu->language, objfile); |
c906108c SS |
8749 | break; |
8750 | default: | |
8751 | break; | |
8752 | } | |
8753 | } | |
8754 | ||
5c4e30ca DC |
8755 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8756 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8757 | the name of the enclosing namespace. */ | |
91c24f0a | 8758 | |
72bf9492 DJ |
8759 | static void |
8760 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8761 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8762 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8763 | { |
72bf9492 | 8764 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8765 | |
72bf9492 | 8766 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8767 | |
8768 | /* Now scan partial symbols in that namespace. */ | |
8769 | ||
91c24f0a | 8770 | if (pdi->has_children) |
cdc07690 | 8771 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8772 | } |
8773 | ||
5d7cb8df JK |
8774 | /* Read a partial die corresponding to a Fortran module. */ |
8775 | ||
8776 | static void | |
8777 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8778 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8779 | { |
530e8392 KB |
8780 | /* Add a symbol for the namespace. */ |
8781 | ||
8782 | add_partial_symbol (pdi, cu); | |
8783 | ||
f55ee35c | 8784 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8785 | |
8786 | if (pdi->has_children) | |
cdc07690 | 8787 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8788 | } |
8789 | ||
b1dc1806 XR |
8790 | /* Read a partial die corresponding to a subprogram or an inlined |
8791 | subprogram and create a partial symbol for that subprogram. | |
8792 | When the CU language allows it, this routine also defines a partial | |
8793 | symbol for each nested subprogram that this subprogram contains. | |
8794 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8795 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8796 | |
cdc07690 YQ |
8797 | PDI may also be a lexical block, in which case we simply search |
8798 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8799 | Again, this is only performed when the CU language allows this |
8800 | type of definitions. */ | |
8801 | ||
8802 | static void | |
8803 | add_partial_subprogram (struct partial_die_info *pdi, | |
8804 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8805 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8806 | { |
b1dc1806 | 8807 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8808 | { |
8809 | if (pdi->has_pc_info) | |
8810 | { | |
8811 | if (pdi->lowpc < *lowpc) | |
8812 | *lowpc = pdi->lowpc; | |
8813 | if (pdi->highpc > *highpc) | |
8814 | *highpc = pdi->highpc; | |
cdc07690 | 8815 | if (set_addrmap) |
5734ee8b | 8816 | { |
518817b3 | 8817 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
8818 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
8819 | CORE_ADDR baseaddr; | |
b926417a TT |
8820 | CORE_ADDR this_highpc; |
8821 | CORE_ADDR this_lowpc; | |
5734ee8b | 8822 | |
b3b3bada | 8823 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8824 | this_lowpc |
8825 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8826 | pdi->lowpc + baseaddr) | |
8827 | - baseaddr); | |
8828 | this_highpc | |
8829 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8830 | pdi->highpc + baseaddr) | |
8831 | - baseaddr); | |
d320c2b5 | 8832 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8833 | this_lowpc, this_highpc - 1, |
9291a0cd | 8834 | cu->per_cu->v.psymtab); |
5734ee8b | 8835 | } |
481860b3 GB |
8836 | } |
8837 | ||
8838 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8839 | { | |
bc30ff58 | 8840 | if (!pdi->is_declaration) |
e8d05480 JB |
8841 | /* Ignore subprogram DIEs that do not have a name, they are |
8842 | illegal. Do not emit a complaint at this point, we will | |
8843 | do so when we convert this psymtab into a symtab. */ | |
8844 | if (pdi->name) | |
8845 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8846 | } |
8847 | } | |
6e70227d | 8848 | |
bc30ff58 JB |
8849 | if (! pdi->has_children) |
8850 | return; | |
8851 | ||
0a4b0913 | 8852 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8853 | { |
8854 | pdi = pdi->die_child; | |
8855 | while (pdi != NULL) | |
8856 | { | |
52356b79 | 8857 | pdi->fixup (cu); |
bc30ff58 | 8858 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8859 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8860 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8861 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8862 | pdi = pdi->die_sibling; |
8863 | } | |
8864 | } | |
8865 | } | |
8866 | ||
91c24f0a DC |
8867 | /* Read a partial die corresponding to an enumeration type. */ |
8868 | ||
72bf9492 DJ |
8869 | static void |
8870 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8871 | struct dwarf2_cu *cu) | |
91c24f0a | 8872 | { |
72bf9492 | 8873 | struct partial_die_info *pdi; |
91c24f0a DC |
8874 | |
8875 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8876 | add_partial_symbol (enum_pdi, cu); |
8877 | ||
8878 | pdi = enum_pdi->die_child; | |
8879 | while (pdi) | |
91c24f0a | 8880 | { |
72bf9492 | 8881 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8882 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8883 | else |
72bf9492 DJ |
8884 | add_partial_symbol (pdi, cu); |
8885 | pdi = pdi->die_sibling; | |
91c24f0a | 8886 | } |
91c24f0a DC |
8887 | } |
8888 | ||
6caca83c CC |
8889 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8890 | ||
8891 | static unsigned int | |
d521ce57 | 8892 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8893 | { |
8894 | unsigned int bytes_read; | |
8895 | ||
8896 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8897 | } | |
8898 | ||
685af9cd TT |
8899 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8900 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8901 | ||
4bb7a0a7 DJ |
8902 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8903 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8904 | the initial number. */ | |
8905 | ||
8906 | static struct abbrev_info * | |
685af9cd TT |
8907 | peek_die_abbrev (const die_reader_specs &reader, |
8908 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8909 | { |
685af9cd | 8910 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8911 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8912 | unsigned int abbrev_number |
8913 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8914 | |
8915 | if (abbrev_number == 0) | |
8916 | return NULL; | |
8917 | ||
685af9cd | 8918 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8919 | if (!abbrev) |
8920 | { | |
422b9917 | 8921 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8922 | " at offset %s [in module %s]"), |
422b9917 | 8923 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8924 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8925 | } |
8926 | ||
8927 | return abbrev; | |
8928 | } | |
8929 | ||
93311388 DE |
8930 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8931 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8932 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8933 | ||
d521ce57 TT |
8934 | static const gdb_byte * |
8935 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8936 | { |
4bb7a0a7 DJ |
8937 | while (1) |
8938 | { | |
685af9cd TT |
8939 | unsigned int bytes_read; |
8940 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8941 | ||
4bb7a0a7 DJ |
8942 | if (abbrev == NULL) |
8943 | return info_ptr + bytes_read; | |
8944 | else | |
dee91e82 | 8945 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8946 | } |
8947 | } | |
8948 | ||
93311388 DE |
8949 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8950 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8951 | abbrev corresponding to that skipped uleb128 should be passed in |
8952 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8953 | children. */ | |
8954 | ||
d521ce57 TT |
8955 | static const gdb_byte * |
8956 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8957 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8958 | { |
8959 | unsigned int bytes_read; | |
8960 | struct attribute attr; | |
dee91e82 DE |
8961 | bfd *abfd = reader->abfd; |
8962 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8963 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8964 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8965 | unsigned int form, i; |
8966 | ||
8967 | for (i = 0; i < abbrev->num_attrs; i++) | |
8968 | { | |
8969 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8970 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8971 | { | |
18a8505e AT |
8972 | bool ignored; |
8973 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8974 | &ignored); | |
4bb7a0a7 | 8975 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8976 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8977 | else |
b9502d3f | 8978 | { |
9c541725 PA |
8979 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
8980 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
8981 | |
8982 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8983 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
8984 | else if (sibling_ptr > reader->buffer_end) |
8985 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
8986 | else |
8987 | return sibling_ptr; | |
8988 | } | |
4bb7a0a7 DJ |
8989 | } |
8990 | ||
8991 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8992 | form = abbrev->attrs[i].form; | |
8993 | skip_attribute: | |
8994 | switch (form) | |
8995 | { | |
4bb7a0a7 | 8996 | case DW_FORM_ref_addr: |
ae411497 TT |
8997 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8998 | and later it is offset sized. */ | |
8999 | if (cu->header.version == 2) | |
9000 | info_ptr += cu->header.addr_size; | |
9001 | else | |
9002 | info_ptr += cu->header.offset_size; | |
9003 | break; | |
36586728 TT |
9004 | case DW_FORM_GNU_ref_alt: |
9005 | info_ptr += cu->header.offset_size; | |
9006 | break; | |
ae411497 | 9007 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9008 | info_ptr += cu->header.addr_size; |
9009 | break; | |
9010 | case DW_FORM_data1: | |
9011 | case DW_FORM_ref1: | |
9012 | case DW_FORM_flag: | |
8fe0f950 | 9013 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9014 | info_ptr += 1; |
9015 | break; | |
2dc7f7b3 | 9016 | case DW_FORM_flag_present: |
43988095 | 9017 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9018 | break; |
4bb7a0a7 DJ |
9019 | case DW_FORM_data2: |
9020 | case DW_FORM_ref2: | |
8fe0f950 | 9021 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9022 | info_ptr += 2; |
9023 | break; | |
8fe0f950 AT |
9024 | case DW_FORM_strx3: |
9025 | info_ptr += 3; | |
9026 | break; | |
4bb7a0a7 DJ |
9027 | case DW_FORM_data4: |
9028 | case DW_FORM_ref4: | |
8fe0f950 | 9029 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9030 | info_ptr += 4; |
9031 | break; | |
9032 | case DW_FORM_data8: | |
9033 | case DW_FORM_ref8: | |
55f1336d | 9034 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9035 | info_ptr += 8; |
9036 | break; | |
0224619f JK |
9037 | case DW_FORM_data16: |
9038 | info_ptr += 16; | |
9039 | break; | |
4bb7a0a7 | 9040 | case DW_FORM_string: |
9b1c24c8 | 9041 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9042 | info_ptr += bytes_read; |
9043 | break; | |
2dc7f7b3 | 9044 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9045 | case DW_FORM_strp: |
36586728 | 9046 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9047 | info_ptr += cu->header.offset_size; |
9048 | break; | |
2dc7f7b3 | 9049 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9050 | case DW_FORM_block: |
9051 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9052 | info_ptr += bytes_read; | |
9053 | break; | |
9054 | case DW_FORM_block1: | |
9055 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9056 | break; | |
9057 | case DW_FORM_block2: | |
9058 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9059 | break; | |
9060 | case DW_FORM_block4: | |
9061 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9062 | break; | |
336d760d | 9063 | case DW_FORM_addrx: |
cf532bd1 | 9064 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9065 | case DW_FORM_sdata: |
9066 | case DW_FORM_udata: | |
9067 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9068 | case DW_FORM_GNU_addr_index: |
9069 | case DW_FORM_GNU_str_index: | |
18a8505e | 9070 | case DW_FORM_rnglistx: |
d521ce57 | 9071 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9072 | break; |
9073 | case DW_FORM_indirect: | |
9074 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9075 | info_ptr += bytes_read; | |
9076 | /* We need to continue parsing from here, so just go back to | |
9077 | the top. */ | |
9078 | goto skip_attribute; | |
9079 | ||
9080 | default: | |
3e43a32a MS |
9081 | error (_("Dwarf Error: Cannot handle %s " |
9082 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9083 | dwarf_form_name (form), |
9084 | bfd_get_filename (abfd)); | |
9085 | } | |
9086 | } | |
9087 | ||
9088 | if (abbrev->has_children) | |
dee91e82 | 9089 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9090 | else |
9091 | return info_ptr; | |
9092 | } | |
9093 | ||
93311388 | 9094 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9095 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9096 | |
d521ce57 | 9097 | static const gdb_byte * |
dee91e82 DE |
9098 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9099 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9100 | const gdb_byte *info_ptr) |
91c24f0a DC |
9101 | { |
9102 | /* Do we know the sibling already? */ | |
72bf9492 | 9103 | |
91c24f0a DC |
9104 | if (orig_pdi->sibling) |
9105 | return orig_pdi->sibling; | |
9106 | ||
9107 | /* Are there any children to deal with? */ | |
9108 | ||
9109 | if (!orig_pdi->has_children) | |
9110 | return info_ptr; | |
9111 | ||
4bb7a0a7 | 9112 | /* Skip the children the long way. */ |
91c24f0a | 9113 | |
dee91e82 | 9114 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9115 | } |
9116 | ||
257e7a09 | 9117 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9118 | not NULL. */ |
c906108c | 9119 | |
891813be TT |
9120 | void |
9121 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9122 | { |
ed2dc618 SM |
9123 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9124 | = get_dwarf2_per_objfile (objfile); | |
9125 | ||
077cbab2 TT |
9126 | gdb_assert (!readin); |
9127 | /* If this psymtab is constructed from a debug-only objfile, the | |
9128 | has_section_at_zero flag will not necessarily be correct. We | |
9129 | can get the correct value for this flag by looking at the data | |
9130 | associated with the (presumably stripped) associated objfile. */ | |
9131 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9132 | { |
077cbab2 TT |
9133 | struct dwarf2_per_objfile *dpo_backlink |
9134 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 9135 | |
077cbab2 TT |
9136 | dwarf2_per_objfile->has_section_at_zero |
9137 | = dpo_backlink->has_section_at_zero; | |
9138 | } | |
98bfdba5 | 9139 | |
077cbab2 | 9140 | dwarf2_per_objfile->reading_partial_symbols = 0; |
c906108c | 9141 | |
8566b89b | 9142 | expand_psymtab (objfile); |
95554aad | 9143 | |
ed2dc618 | 9144 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9145 | } |
9cdd5dbd DE |
9146 | \f |
9147 | /* Reading in full CUs. */ | |
c906108c | 9148 | |
10b3939b DJ |
9149 | /* Add PER_CU to the queue. */ |
9150 | ||
9151 | static void | |
95554aad TT |
9152 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9153 | enum language pretend_language) | |
10b3939b | 9154 | { |
10b3939b | 9155 | per_cu->queued = 1; |
39856def | 9156 | per_cu->dwarf2_per_objfile->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
9157 | } |
9158 | ||
89e63ee4 DE |
9159 | /* If PER_CU is not yet queued, add it to the queue. |
9160 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9161 | dependency. | |
0907af0c | 9162 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9163 | meaning either PER_CU is already queued or it is already loaded. |
9164 | ||
9165 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9166 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9167 | |
9168 | static int | |
89e63ee4 | 9169 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9170 | struct dwarf2_per_cu_data *per_cu, |
9171 | enum language pretend_language) | |
9172 | { | |
9173 | /* We may arrive here during partial symbol reading, if we need full | |
9174 | DIEs to process an unusual case (e.g. template arguments). Do | |
9175 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9176 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9177 | { |
9178 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9179 | return 1; | |
9180 | return 0; | |
9181 | } | |
9182 | ||
9183 | /* Mark the dependence relation so that we don't flush PER_CU | |
9184 | too early. */ | |
89e63ee4 DE |
9185 | if (dependent_cu != NULL) |
9186 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9187 | |
9188 | /* If it's already on the queue, we have nothing to do. */ | |
9189 | if (per_cu->queued) | |
9190 | return 0; | |
9191 | ||
9192 | /* If the compilation unit is already loaded, just mark it as | |
9193 | used. */ | |
9194 | if (per_cu->cu != NULL) | |
9195 | { | |
9196 | per_cu->cu->last_used = 0; | |
9197 | return 0; | |
9198 | } | |
9199 | ||
9200 | /* Add it to the queue. */ | |
9201 | queue_comp_unit (per_cu, pretend_language); | |
9202 | ||
9203 | return 1; | |
9204 | } | |
9205 | ||
10b3939b DJ |
9206 | /* Process the queue. */ |
9207 | ||
9208 | static void | |
ed2dc618 | 9209 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 9210 | { |
b4f54984 | 9211 | if (dwarf_read_debug) |
45cfd468 DE |
9212 | { |
9213 | fprintf_unfiltered (gdb_stdlog, | |
9214 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9215 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9216 | } |
9217 | ||
03dd20cc DJ |
9218 | /* The queue starts out with one item, but following a DIE reference |
9219 | may load a new CU, adding it to the end of the queue. */ | |
39856def | 9220 | while (!dwarf2_per_objfile->queue.empty ()) |
10b3939b | 9221 | { |
39856def TT |
9222 | dwarf2_queue_item &item = dwarf2_per_objfile->queue.front (); |
9223 | ||
cc12ce38 | 9224 | if ((dwarf2_per_objfile->using_index |
39856def TT |
9225 | ? !item.per_cu->v.quick->compunit_symtab |
9226 | : (item.per_cu->v.psymtab && !item.per_cu->v.psymtab->readin)) | |
cc12ce38 | 9227 | /* Skip dummy CUs. */ |
39856def | 9228 | && item.per_cu->cu != NULL) |
f4dc4d17 | 9229 | { |
39856def | 9230 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 9231 | unsigned int debug_print_threshold; |
247f5c4f | 9232 | char buf[100]; |
f4dc4d17 | 9233 | |
247f5c4f | 9234 | if (per_cu->is_debug_types) |
f4dc4d17 | 9235 | { |
247f5c4f DE |
9236 | struct signatured_type *sig_type = |
9237 | (struct signatured_type *) per_cu; | |
9238 | ||
9d8780f0 | 9239 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9240 | hex_string (sig_type->signature), |
9d8780f0 | 9241 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9242 | /* There can be 100s of TUs. |
9243 | Only print them in verbose mode. */ | |
9244 | debug_print_threshold = 2; | |
f4dc4d17 | 9245 | } |
247f5c4f | 9246 | else |
73be47f5 | 9247 | { |
9d8780f0 SM |
9248 | sprintf (buf, "CU at offset %s", |
9249 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9250 | debug_print_threshold = 1; |
9251 | } | |
247f5c4f | 9252 | |
b4f54984 | 9253 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9254 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9255 | |
9256 | if (per_cu->is_debug_types) | |
39856def | 9257 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 9258 | else |
39856def | 9259 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 9260 | |
b4f54984 | 9261 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9262 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9263 | } |
10b3939b | 9264 | |
39856def TT |
9265 | item.per_cu->queued = 0; |
9266 | dwarf2_per_objfile->queue.pop (); | |
10b3939b DJ |
9267 | } |
9268 | ||
b4f54984 | 9269 | if (dwarf_read_debug) |
45cfd468 DE |
9270 | { |
9271 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9272 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9273 | } |
10b3939b DJ |
9274 | } |
9275 | ||
10b3939b DJ |
9276 | /* Read in full symbols for PST, and anything it depends on. */ |
9277 | ||
8566b89b TT |
9278 | void |
9279 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9280 | { |
10b3939b | 9281 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 | 9282 | |
8566b89b | 9283 | if (readin) |
95554aad TT |
9284 | return; |
9285 | ||
0494dbec | 9286 | read_dependencies (objfile); |
aaa75496 | 9287 | |
8566b89b | 9288 | per_cu = per_cu_data; |
10b3939b DJ |
9289 | |
9290 | if (per_cu == NULL) | |
aaa75496 JB |
9291 | { |
9292 | /* It's an include file, no symbols to read for it. | |
9293 | Everything is in the parent symtab. */ | |
8566b89b | 9294 | readin = true; |
aaa75496 JB |
9295 | return; |
9296 | } | |
c906108c | 9297 | |
58f0c718 | 9298 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9299 | } |
9300 | ||
dee91e82 DE |
9301 | /* Trivial hash function for die_info: the hash value of a DIE |
9302 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9303 | |
dee91e82 DE |
9304 | static hashval_t |
9305 | die_hash (const void *item) | |
10b3939b | 9306 | { |
9a3c8263 | 9307 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9308 | |
9c541725 | 9309 | return to_underlying (die->sect_off); |
dee91e82 | 9310 | } |
63d06c5c | 9311 | |
dee91e82 DE |
9312 | /* Trivial comparison function for die_info structures: two DIEs |
9313 | are equal if they have the same offset. */ | |
98bfdba5 | 9314 | |
dee91e82 DE |
9315 | static int |
9316 | die_eq (const void *item_lhs, const void *item_rhs) | |
9317 | { | |
9a3c8263 SM |
9318 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9319 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9320 | |
9c541725 | 9321 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9322 | } |
c906108c | 9323 | |
c0ab21c2 | 9324 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9325 | |
dee91e82 | 9326 | static void |
c0ab21c2 TT |
9327 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
9328 | bool skip_partial, | |
9329 | enum language pretend_language) | |
dee91e82 | 9330 | { |
c0ab21c2 TT |
9331 | gdb_assert (! this_cu->is_debug_types); |
9332 | ||
9333 | cutu_reader reader (this_cu, NULL, 1, 1, skip_partial); | |
9334 | if (reader.dummy_p) | |
9335 | return; | |
9336 | ||
9337 | struct dwarf2_cu *cu = reader.cu; | |
9338 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9339 | |
dee91e82 DE |
9340 | gdb_assert (cu->die_hash == NULL); |
9341 | cu->die_hash = | |
9342 | htab_create_alloc_ex (cu->header.length / 12, | |
9343 | die_hash, | |
9344 | die_eq, | |
9345 | NULL, | |
9346 | &cu->comp_unit_obstack, | |
9347 | hashtab_obstack_allocate, | |
9348 | dummy_obstack_deallocate); | |
e142c38c | 9349 | |
3e225074 | 9350 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9351 | reader.comp_unit_die->child |
9352 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9353 | &info_ptr, reader.comp_unit_die); | |
9354 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9355 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9356 | |
9357 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9358 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9359 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9360 | or we won't be able to build types correctly. |
9361 | Similarly, if we do not read the producer, we can not apply | |
9362 | producer-specific interpretation. */ | |
c0ab21c2 | 9363 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
10b3939b DJ |
9364 | } |
9365 | ||
3da10d80 KS |
9366 | /* Add a DIE to the delayed physname list. */ |
9367 | ||
9368 | static void | |
9369 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9370 | const char *name, struct die_info *die, | |
9371 | struct dwarf2_cu *cu) | |
9372 | { | |
9373 | struct delayed_method_info mi; | |
9374 | mi.type = type; | |
9375 | mi.fnfield_index = fnfield_index; | |
9376 | mi.index = index; | |
9377 | mi.name = name; | |
9378 | mi.die = die; | |
c89b44cd | 9379 | cu->method_list.push_back (mi); |
3da10d80 KS |
9380 | } |
9381 | ||
3693fdb3 PA |
9382 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9383 | "const" / "volatile". If so, decrements LEN by the length of the | |
9384 | modifier and return true. Otherwise return false. */ | |
9385 | ||
9386 | template<size_t N> | |
9387 | static bool | |
9388 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9389 | { | |
9390 | size_t mod_len = sizeof (mod) - 1; | |
9391 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9392 | { | |
9393 | len -= mod_len; | |
9394 | return true; | |
9395 | } | |
9396 | return false; | |
9397 | } | |
9398 | ||
3da10d80 KS |
9399 | /* Compute the physnames of any methods on the CU's method list. |
9400 | ||
9401 | The computation of method physnames is delayed in order to avoid the | |
9402 | (bad) condition that one of the method's formal parameters is of an as yet | |
9403 | incomplete type. */ | |
9404 | ||
9405 | static void | |
9406 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9407 | { | |
3693fdb3 | 9408 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9409 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9410 | return; |
9411 | gdb_assert (cu->language == language_cplus); | |
9412 | ||
52941706 | 9413 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9414 | { |
1d06ead6 | 9415 | const char *physname; |
3da10d80 | 9416 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9417 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9418 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9419 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9420 | = physname ? physname : ""; |
3693fdb3 PA |
9421 | |
9422 | /* Since there's no tag to indicate whether a method is a | |
9423 | const/volatile overload, extract that information out of the | |
9424 | demangled name. */ | |
9425 | if (physname != NULL) | |
9426 | { | |
9427 | size_t len = strlen (physname); | |
9428 | ||
9429 | while (1) | |
9430 | { | |
9431 | if (physname[len] == ')') /* shortcut */ | |
9432 | break; | |
9433 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9434 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9435 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9436 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9437 | else |
9438 | break; | |
9439 | } | |
9440 | } | |
3da10d80 | 9441 | } |
c89b44cd TT |
9442 | |
9443 | /* The list is no longer needed. */ | |
9444 | cu->method_list.clear (); | |
3da10d80 KS |
9445 | } |
9446 | ||
a766d390 DE |
9447 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9448 | and it's not clear if/how imported objects will appear. | |
9449 | To keep Go support simple until that's worked out, | |
9450 | go back through what we've read and create something usable. | |
9451 | We could do this while processing each DIE, and feels kinda cleaner, | |
9452 | but that way is more invasive. | |
9453 | This is to, for example, allow the user to type "p var" or "b main" | |
9454 | without having to specify the package name, and allow lookups | |
9455 | of module.object to work in contexts that use the expression | |
9456 | parser. */ | |
9457 | ||
9458 | static void | |
9459 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9460 | { | |
421d1616 | 9461 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9462 | struct pending *list; |
9463 | int i; | |
9464 | ||
c24bdb02 | 9465 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9466 | list != NULL; |
9467 | list = list->next) | |
a766d390 DE |
9468 | { |
9469 | for (i = 0; i < list->nsyms; ++i) | |
9470 | { | |
9471 | struct symbol *sym = list->symbol[i]; | |
9472 | ||
c1b5c1eb | 9473 | if (sym->language () == language_go |
a766d390 DE |
9474 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9475 | { | |
421d1616 TT |
9476 | gdb::unique_xmalloc_ptr<char> this_package_name |
9477 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9478 | |
9479 | if (this_package_name == NULL) | |
9480 | continue; | |
9481 | if (package_name == NULL) | |
421d1616 | 9482 | package_name = std::move (this_package_name); |
a766d390 DE |
9483 | else |
9484 | { | |
518817b3 SM |
9485 | struct objfile *objfile |
9486 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9487 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9488 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9489 | (symbol_symtab (sym) != NULL |
9490 | ? symtab_to_filename_for_display | |
9491 | (symbol_symtab (sym)) | |
e3b94546 | 9492 | : objfile_name (objfile)), |
421d1616 | 9493 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9494 | } |
9495 | } | |
9496 | } | |
9497 | } | |
9498 | ||
9499 | if (package_name != NULL) | |
9500 | { | |
518817b3 | 9501 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9502 | const char *saved_package_name |
421d1616 | 9503 | = obstack_strdup (&objfile->per_bfd->storage_obstack, package_name.get ()); |
19f392bc UW |
9504 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9505 | saved_package_name); | |
a766d390 DE |
9506 | struct symbol *sym; |
9507 | ||
e623cf5d | 9508 | sym = allocate_symbol (objfile); |
d3ecddab | 9509 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9510 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9511 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9512 | e.g., "main" finds the "main" module and not C's main(). */ | |
9513 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9514 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9515 | SYMBOL_TYPE (sym) = type; |
9516 | ||
c24bdb02 | 9517 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9518 | } |
9519 | } | |
9520 | ||
c9317f21 TT |
9521 | /* Allocate a fully-qualified name consisting of the two parts on the |
9522 | obstack. */ | |
9523 | ||
9524 | static const char * | |
9525 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9526 | { | |
9527 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9528 | } | |
9529 | ||
9530 | /* A helper that allocates a struct discriminant_info to attach to a | |
9531 | union type. */ | |
9532 | ||
9533 | static struct discriminant_info * | |
9534 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9535 | int default_index) | |
9536 | { | |
9537 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9538 | gdb_assert (discriminant_index == -1 |
9539 | || (discriminant_index >= 0 | |
9540 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9541 | gdb_assert (default_index == -1 |
c7b15a66 | 9542 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9543 | |
9544 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9545 | ||
9546 | struct discriminant_info *disc | |
9547 | = ((struct discriminant_info *) | |
9548 | TYPE_ZALLOC (type, | |
9549 | offsetof (struct discriminant_info, discriminants) | |
9550 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9551 | disc->default_index = default_index; | |
9552 | disc->discriminant_index = discriminant_index; | |
9553 | ||
9554 | struct dynamic_prop prop; | |
9555 | prop.kind = PROP_UNDEFINED; | |
9556 | prop.data.baton = disc; | |
9557 | ||
9558 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9559 | ||
9560 | return disc; | |
9561 | } | |
9562 | ||
9563 | /* Some versions of rustc emitted enums in an unusual way. | |
9564 | ||
9565 | Ordinary enums were emitted as unions. The first element of each | |
9566 | structure in the union was named "RUST$ENUM$DISR". This element | |
9567 | held the discriminant. | |
9568 | ||
9569 | These versions of Rust also implemented the "non-zero" | |
9570 | optimization. When the enum had two values, and one is empty and | |
9571 | the other holds a pointer that cannot be zero, the pointer is used | |
9572 | as the discriminant, with a zero value meaning the empty variant. | |
9573 | Here, the union's first member is of the form | |
9574 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9575 | where the fieldnos are the indices of the fields that should be | |
9576 | traversed in order to find the field (which may be several fields deep) | |
9577 | and the variantname is the name of the variant of the case when the | |
9578 | field is zero. | |
9579 | ||
9580 | This function recognizes whether TYPE is of one of these forms, | |
9581 | and, if so, smashes it to be a variant type. */ | |
9582 | ||
9583 | static void | |
9584 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9585 | { | |
9586 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9587 | ||
9588 | /* We don't need to deal with empty enums. */ | |
9589 | if (TYPE_NFIELDS (type) == 0) | |
9590 | return; | |
9591 | ||
9592 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9593 | if (TYPE_NFIELDS (type) == 1 | |
9594 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9595 | { | |
9596 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9597 | ||
9598 | /* Decode the field name to find the offset of the | |
9599 | discriminant. */ | |
9600 | ULONGEST bit_offset = 0; | |
9601 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9602 | while (name[0] >= '0' && name[0] <= '9') | |
9603 | { | |
9604 | char *tail; | |
9605 | unsigned long index = strtoul (name, &tail, 10); | |
9606 | name = tail; | |
9607 | if (*name != '$' | |
9608 | || index >= TYPE_NFIELDS (field_type) | |
9609 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9610 | != FIELD_LOC_KIND_BITPOS)) | |
9611 | { | |
b98664d3 | 9612 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9613 | "[in module %s]"), |
9614 | TYPE_FIELD_NAME (type, 0), | |
9615 | objfile_name (objfile)); | |
9616 | return; | |
9617 | } | |
9618 | ++name; | |
9619 | ||
9620 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9621 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9622 | } | |
9623 | ||
9624 | /* Make a union to hold the variants. */ | |
9625 | struct type *union_type = alloc_type (objfile); | |
9626 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9627 | TYPE_NFIELDS (union_type) = 3; | |
9628 | TYPE_FIELDS (union_type) | |
9629 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9630 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9631 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9632 | |
9633 | /* Put the discriminant must at index 0. */ | |
9634 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9635 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9636 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9637 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9638 | ||
9639 | /* The order of fields doesn't really matter, so put the real | |
9640 | field at index 1 and the data-less field at index 2. */ | |
9641 | struct discriminant_info *disc | |
9642 | = alloc_discriminant_info (union_type, 0, 1); | |
9643 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9644 | TYPE_FIELD_NAME (union_type, 1) | |
9645 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9646 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9647 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9648 | TYPE_FIELD_NAME (union_type, 1)); | |
9649 | ||
9650 | const char *dataless_name | |
9651 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9652 | name); | |
9653 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9654 | dataless_name); | |
9655 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9656 | /* NAME points into the original discriminant name, which | |
9657 | already has the correct lifetime. */ | |
9658 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9659 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9660 | disc->discriminants[2] = 0; | |
9661 | ||
9662 | /* Smash this type to be a structure type. We have to do this | |
9663 | because the type has already been recorded. */ | |
9664 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9665 | TYPE_NFIELDS (type) = 1; | |
9666 | TYPE_FIELDS (type) | |
9667 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9668 | ||
9669 | /* Install the variant part. */ | |
9670 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9671 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9672 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9673 | } | |
77c2dba3 TT |
9674 | /* A union with a single anonymous field is probably an old-style |
9675 | univariant enum. */ | |
9676 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9677 | { |
c9317f21 TT |
9678 | /* Smash this type to be a structure type. We have to do this |
9679 | because the type has already been recorded. */ | |
9680 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9681 | ||
9682 | /* Make a union to hold the variants. */ | |
9683 | struct type *union_type = alloc_type (objfile); | |
9684 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9685 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9686 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9687 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9688 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9689 | ||
9690 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9691 | const char *variant_name | |
9692 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9693 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9694 | TYPE_NAME (field_type) | |
9695 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9696 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9697 | |
9698 | /* Install the union in the outer struct type. */ | |
9699 | TYPE_NFIELDS (type) = 1; | |
9700 | TYPE_FIELDS (type) | |
9701 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9702 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9703 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9704 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9705 | ||
9706 | alloc_discriminant_info (union_type, -1, 0); | |
9707 | } | |
9708 | else | |
9709 | { | |
9710 | struct type *disr_type = nullptr; | |
9711 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9712 | { | |
9713 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9714 | ||
a037790e TT |
9715 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9716 | { | |
9717 | /* All fields of a true enum will be structs. */ | |
9718 | return; | |
9719 | } | |
9720 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9721 | { |
9722 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9723 | disr_type = nullptr; |
c9317f21 TT |
9724 | } |
9725 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9726 | "RUST$ENUM$DISR") != 0) | |
9727 | { | |
9728 | /* Not a Rust enum. */ | |
9729 | return; | |
9730 | } | |
9731 | else | |
9732 | { | |
9733 | /* Found one. */ | |
9734 | break; | |
9735 | } | |
9736 | } | |
9737 | ||
9738 | /* If we got here without a discriminant, then it's probably | |
9739 | just a union. */ | |
9740 | if (disr_type == nullptr) | |
9741 | return; | |
9742 | ||
9743 | /* Smash this type to be a structure type. We have to do this | |
9744 | because the type has already been recorded. */ | |
9745 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9746 | ||
9747 | /* Make a union to hold the variants. */ | |
9748 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
9749 | struct type *union_type = alloc_type (objfile); | |
9750 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9751 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
9752 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9753 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9754 | TYPE_FIELDS (union_type) |
9755 | = (struct field *) TYPE_ZALLOC (union_type, | |
9756 | (TYPE_NFIELDS (union_type) | |
9757 | * sizeof (struct field))); | |
9758 | ||
9759 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
9760 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
9761 | ||
9762 | /* Install the discriminant at index 0 in the union. */ | |
9763 | TYPE_FIELD (union_type, 0) = *disr_field; | |
9764 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9765 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9766 | ||
9767 | /* Install the union in the outer struct type. */ | |
9768 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9769 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9770 | TYPE_NFIELDS (type) = 1; | |
9771 | ||
9772 | /* Set the size and offset of the union type. */ | |
9773 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9774 | ||
9775 | /* We need a way to find the correct discriminant given a | |
9776 | variant name. For convenience we build a map here. */ | |
9777 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9778 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9779 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9780 | { | |
9781 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9782 | { | |
9783 | const char *name | |
9784 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9785 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9786 | } | |
9787 | } | |
9788 | ||
9789 | int n_fields = TYPE_NFIELDS (union_type); | |
9790 | struct discriminant_info *disc | |
9791 | = alloc_discriminant_info (union_type, 0, -1); | |
9792 | /* Skip the discriminant here. */ | |
9793 | for (int i = 1; i < n_fields; ++i) | |
9794 | { | |
9795 | /* Find the final word in the name of this variant's type. | |
9796 | That name can be used to look up the correct | |
9797 | discriminant. */ | |
9798 | const char *variant_name | |
9799 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
9800 | i))); | |
9801 | ||
9802 | auto iter = discriminant_map.find (variant_name); | |
9803 | if (iter != discriminant_map.end ()) | |
9804 | disc->discriminants[i] = iter->second; | |
9805 | ||
bedda9ac | 9806 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 9807 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
9808 | if (TYPE_NFIELDS (sub_type) > 0) |
9809 | { | |
9810 | --TYPE_NFIELDS (sub_type); | |
9811 | ++TYPE_FIELDS (sub_type); | |
9812 | } | |
c9317f21 TT |
9813 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
9814 | TYPE_NAME (sub_type) | |
9815 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9816 | TYPE_NAME (type), variant_name); | |
9817 | } | |
9818 | } | |
9819 | } | |
9820 | ||
9821 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9822 | ||
9823 | static void | |
9824 | rust_union_quirks (struct dwarf2_cu *cu) | |
9825 | { | |
9826 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9827 | for (type *type_ : cu->rust_unions) |
9828 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9829 | /* We don't need this any more. */ |
9830 | cu->rust_unions.clear (); | |
c9317f21 TT |
9831 | } |
9832 | ||
95554aad TT |
9833 | /* Return the symtab for PER_CU. This works properly regardless of |
9834 | whether we're using the index or psymtabs. */ | |
9835 | ||
43f3e411 DE |
9836 | static struct compunit_symtab * |
9837 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9838 | { |
ed2dc618 | 9839 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9840 | ? per_cu->v.quick->compunit_symtab |
9841 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9842 | } |
9843 | ||
9844 | /* A helper function for computing the list of all symbol tables | |
9845 | included by PER_CU. */ | |
9846 | ||
9847 | static void | |
4c39bc03 | 9848 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9849 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9850 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9851 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9852 | { |
9853 | void **slot; | |
43f3e411 | 9854 | struct compunit_symtab *cust; |
95554aad TT |
9855 | |
9856 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9857 | if (*slot != NULL) | |
9858 | { | |
9859 | /* This inclusion and its children have been processed. */ | |
9860 | return; | |
9861 | } | |
9862 | ||
9863 | *slot = per_cu; | |
9864 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9865 | cust = get_compunit_symtab (per_cu); |
9866 | if (cust != NULL) | |
ec94af83 DE |
9867 | { |
9868 | /* If this is a type unit only add its symbol table if we haven't | |
9869 | seen it yet (type unit per_cu's can share symtabs). */ | |
9870 | if (per_cu->is_debug_types) | |
9871 | { | |
43f3e411 | 9872 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9873 | if (*slot == NULL) |
9874 | { | |
43f3e411 | 9875 | *slot = cust; |
4c39bc03 | 9876 | result->push_back (cust); |
43f3e411 DE |
9877 | if (cust->user == NULL) |
9878 | cust->user = immediate_parent; | |
ec94af83 DE |
9879 | } |
9880 | } | |
9881 | else | |
f9125b6c | 9882 | { |
4c39bc03 | 9883 | result->push_back (cust); |
43f3e411 DE |
9884 | if (cust->user == NULL) |
9885 | cust->user = immediate_parent; | |
f9125b6c | 9886 | } |
ec94af83 | 9887 | } |
95554aad | 9888 | |
ae640021 AB |
9889 | if (!per_cu->imported_symtabs_empty ()) |
9890 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9891 | { | |
9892 | recursively_compute_inclusions (result, all_children, | |
9893 | all_type_symtabs, ptr, cust); | |
9894 | } | |
95554aad TT |
9895 | } |
9896 | ||
43f3e411 | 9897 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9898 | PER_CU. */ |
9899 | ||
9900 | static void | |
43f3e411 | 9901 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9902 | { |
f4dc4d17 DE |
9903 | gdb_assert (! per_cu->is_debug_types); |
9904 | ||
ae640021 | 9905 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9906 | { |
ae640021 | 9907 | int len; |
4c39bc03 | 9908 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9909 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9910 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9911 | |
9912 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9913 | if (cust == NULL) |
95554aad TT |
9914 | return; |
9915 | ||
9916 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9917 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9918 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9919 | NULL, xcalloc, xfree); | |
95554aad | 9920 | |
ae640021 | 9921 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9922 | { |
9923 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9924 | all_type_symtabs, ptr, cust); |
ec94af83 | 9925 | } |
95554aad | 9926 | |
ec94af83 | 9927 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9928 | len = result_symtabs.size (); |
43f3e411 | 9929 | cust->includes |
ed2dc618 | 9930 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9931 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9932 | memcpy (cust->includes, result_symtabs.data (), |
9933 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9934 | cust->includes[len] = NULL; |
95554aad | 9935 | |
95554aad | 9936 | htab_delete (all_children); |
ec94af83 | 9937 | htab_delete (all_type_symtabs); |
95554aad TT |
9938 | } |
9939 | } | |
9940 | ||
9941 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9942 | read. */ | |
9943 | ||
9944 | static void | |
ed2dc618 | 9945 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9946 | { |
71b73764 | 9947 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9948 | { |
9949 | if (! iter->is_debug_types) | |
43f3e411 | 9950 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9951 | } |
95554aad | 9952 | |
c5d0225d | 9953 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9954 | } |
9955 | ||
9cdd5dbd | 9956 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9957 | already been loaded into memory. */ |
9958 | ||
9959 | static void | |
95554aad TT |
9960 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9961 | enum language pretend_language) | |
10b3939b | 9962 | { |
10b3939b | 9963 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9964 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9965 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 9966 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 9967 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9968 | struct compunit_symtab *cust; |
10b3939b | 9969 | CORE_ADDR baseaddr; |
4359dff1 | 9970 | struct block *static_block; |
3e29f34a | 9971 | CORE_ADDR addr; |
10b3939b | 9972 | |
b3b3bada | 9973 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9974 | |
c89b44cd TT |
9975 | /* Clear the list here in case something was left over. */ |
9976 | cu->method_list.clear (); | |
10b3939b | 9977 | |
95554aad TT |
9978 | cu->language = pretend_language; |
9979 | cu->language_defn = language_def (cu->language); | |
9980 | ||
c906108c | 9981 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9982 | process_die (cu->dies, cu); |
c906108c | 9983 | |
a766d390 DE |
9984 | /* For now fudge the Go package. */ |
9985 | if (cu->language == language_go) | |
9986 | fixup_go_packaging (cu); | |
9987 | ||
5f48f8f3 | 9988 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9989 | should be complete, and it should now be safe to compute all of the |
9990 | physnames. */ | |
9991 | compute_delayed_physnames (cu); | |
3da10d80 | 9992 | |
c9317f21 TT |
9993 | if (cu->language == language_rust) |
9994 | rust_union_quirks (cu); | |
9995 | ||
fae299cd DC |
9996 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9997 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9998 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9999 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10000 | |
3e29f34a | 10001 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10002 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10003 | |
10004 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10005 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10006 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10007 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10008 | this comp unit. */ | |
10009 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10010 | ||
c24bdb02 | 10011 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10012 | SECT_OFF_TEXT (objfile), |
10013 | 0); | |
c906108c | 10014 | |
43f3e411 | 10015 | if (cust != NULL) |
c906108c | 10016 | { |
df15bd07 | 10017 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10018 | |
8be455d7 JK |
10019 | /* Set symtab language to language from DW_AT_language. If the |
10020 | compilation is from a C file generated by language preprocessors, do | |
10021 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10022 | if (!(cu->language == language_c |
40e3ad0e | 10023 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10024 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10025 | |
10026 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10027 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10028 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10029 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10030 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10031 | |
10032 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10033 | needed, it would be wrong due to missing DW_AT_producer there. | |
10034 | ||
10035 | Still one can confuse GDB by using non-standard GCC compilation | |
10036 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10037 | */ |
ab260dad | 10038 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10039 | cust->locations_valid = 1; |
e0d00bc7 JK |
10040 | |
10041 | if (gcc_4_minor >= 5) | |
43f3e411 | 10042 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10043 | |
43f3e411 | 10044 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10045 | } |
9291a0cd TT |
10046 | |
10047 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10048 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10049 | else |
10050 | { | |
891813be | 10051 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10052 | pst->compunit_symtab = cust; |
6d94535f | 10053 | pst->readin = true; |
9291a0cd | 10054 | } |
c906108c | 10055 | |
95554aad | 10056 | /* Push it for inclusion processing later. */ |
c5d0225d | 10057 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10058 | |
10059 | /* Not needed any more. */ | |
c24bdb02 | 10060 | cu->reset_builder (); |
f4dc4d17 | 10061 | } |
45cfd468 | 10062 | |
f4dc4d17 DE |
10063 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10064 | already been loaded into memory. */ | |
10065 | ||
10066 | static void | |
10067 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10068 | enum language pretend_language) | |
10069 | { | |
10070 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10071 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10072 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10073 | struct compunit_symtab *cust; |
0186c6a7 DE |
10074 | struct signatured_type *sig_type; |
10075 | ||
10076 | gdb_assert (per_cu->is_debug_types); | |
10077 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10078 | |
c89b44cd TT |
10079 | /* Clear the list here in case something was left over. */ |
10080 | cu->method_list.clear (); | |
f4dc4d17 | 10081 | |
f4dc4d17 DE |
10082 | cu->language = pretend_language; |
10083 | cu->language_defn = language_def (cu->language); | |
10084 | ||
10085 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10086 | process_die (cu->dies, cu); | |
10087 | ||
10088 | /* For now fudge the Go package. */ | |
10089 | if (cu->language == language_go) | |
10090 | fixup_go_packaging (cu); | |
10091 | ||
5f48f8f3 | 10092 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10093 | should be complete, and it should now be safe to compute all of the |
10094 | physnames. */ | |
10095 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10096 | |
c9317f21 TT |
10097 | if (cu->language == language_rust) |
10098 | rust_union_quirks (cu); | |
10099 | ||
f4dc4d17 DE |
10100 | /* TUs share symbol tables. |
10101 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10102 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10103 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10104 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10105 | { |
c24bdb02 KS |
10106 | buildsym_compunit *builder = cu->get_builder (); |
10107 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 10108 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10109 | |
43f3e411 | 10110 | if (cust != NULL) |
f4dc4d17 DE |
10111 | { |
10112 | /* Set symtab language to language from DW_AT_language. If the | |
10113 | compilation is from a C file generated by language preprocessors, | |
10114 | do not set the language if it was already deduced by | |
10115 | start_subfile. */ | |
43f3e411 DE |
10116 | if (!(cu->language == language_c |
10117 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10118 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10119 | } |
10120 | } | |
10121 | else | |
10122 | { | |
c24bdb02 | 10123 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 10124 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10125 | } |
10126 | ||
10127 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10128 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10129 | else |
10130 | { | |
891813be | 10131 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 10132 | pst->compunit_symtab = cust; |
6d94535f | 10133 | pst->readin = true; |
45cfd468 | 10134 | } |
804d2729 TT |
10135 | |
10136 | /* Not needed any more. */ | |
c24bdb02 | 10137 | cu->reset_builder (); |
c906108c SS |
10138 | } |
10139 | ||
95554aad TT |
10140 | /* Process an imported unit DIE. */ |
10141 | ||
10142 | static void | |
10143 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10144 | { | |
10145 | struct attribute *attr; | |
10146 | ||
f4dc4d17 DE |
10147 | /* For now we don't handle imported units in type units. */ |
10148 | if (cu->per_cu->is_debug_types) | |
10149 | { | |
10150 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10151 | " supported in type units [in module %s]"), | |
518817b3 | 10152 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10153 | } |
10154 | ||
95554aad TT |
10155 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10156 | if (attr != NULL) | |
10157 | { | |
9c541725 PA |
10158 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10159 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10160 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10161 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10162 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10163 | |
69d751e3 | 10164 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10165 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10166 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10167 | |
ae640021 | 10168 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10169 | } |
10170 | } | |
10171 | ||
4c8aa72d PA |
10172 | /* RAII object that represents a process_die scope: i.e., |
10173 | starts/finishes processing a DIE. */ | |
10174 | class process_die_scope | |
adde2bff | 10175 | { |
4c8aa72d PA |
10176 | public: |
10177 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10178 | : m_die (die), m_cu (cu) | |
10179 | { | |
10180 | /* We should only be processing DIEs not already in process. */ | |
10181 | gdb_assert (!m_die->in_process); | |
10182 | m_die->in_process = true; | |
10183 | } | |
8c3cb9fa | 10184 | |
4c8aa72d PA |
10185 | ~process_die_scope () |
10186 | { | |
10187 | m_die->in_process = false; | |
10188 | ||
10189 | /* If we're done processing the DIE for the CU that owns the line | |
10190 | header, we don't need the line header anymore. */ | |
10191 | if (m_cu->line_header_die_owner == m_die) | |
10192 | { | |
10193 | delete m_cu->line_header; | |
10194 | m_cu->line_header = NULL; | |
10195 | m_cu->line_header_die_owner = NULL; | |
10196 | } | |
10197 | } | |
10198 | ||
10199 | private: | |
10200 | die_info *m_die; | |
10201 | dwarf2_cu *m_cu; | |
10202 | }; | |
adde2bff | 10203 | |
c906108c SS |
10204 | /* Process a die and its children. */ |
10205 | ||
10206 | static void | |
e7c27a73 | 10207 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10208 | { |
4c8aa72d | 10209 | process_die_scope scope (die, cu); |
adde2bff | 10210 | |
c906108c SS |
10211 | switch (die->tag) |
10212 | { | |
10213 | case DW_TAG_padding: | |
10214 | break; | |
10215 | case DW_TAG_compile_unit: | |
95554aad | 10216 | case DW_TAG_partial_unit: |
e7c27a73 | 10217 | read_file_scope (die, cu); |
c906108c | 10218 | break; |
348e048f DE |
10219 | case DW_TAG_type_unit: |
10220 | read_type_unit_scope (die, cu); | |
10221 | break; | |
c906108c | 10222 | case DW_TAG_subprogram: |
0a4b0913 AB |
10223 | /* Nested subprograms in Fortran get a prefix. */ |
10224 | if (cu->language == language_fortran | |
10225 | && die->parent != NULL | |
10226 | && die->parent->tag == DW_TAG_subprogram) | |
10227 | cu->processing_has_namespace_info = true; | |
10228 | /* Fall through. */ | |
c906108c | 10229 | case DW_TAG_inlined_subroutine: |
edb3359d | 10230 | read_func_scope (die, cu); |
c906108c SS |
10231 | break; |
10232 | case DW_TAG_lexical_block: | |
14898363 L |
10233 | case DW_TAG_try_block: |
10234 | case DW_TAG_catch_block: | |
e7c27a73 | 10235 | read_lexical_block_scope (die, cu); |
c906108c | 10236 | break; |
216f72a1 | 10237 | case DW_TAG_call_site: |
96408a79 SA |
10238 | case DW_TAG_GNU_call_site: |
10239 | read_call_site_scope (die, cu); | |
10240 | break; | |
c906108c | 10241 | case DW_TAG_class_type: |
680b30c7 | 10242 | case DW_TAG_interface_type: |
c906108c SS |
10243 | case DW_TAG_structure_type: |
10244 | case DW_TAG_union_type: | |
134d01f1 | 10245 | process_structure_scope (die, cu); |
c906108c SS |
10246 | break; |
10247 | case DW_TAG_enumeration_type: | |
134d01f1 | 10248 | process_enumeration_scope (die, cu); |
c906108c | 10249 | break; |
134d01f1 | 10250 | |
f792889a DJ |
10251 | /* These dies have a type, but processing them does not create |
10252 | a symbol or recurse to process the children. Therefore we can | |
10253 | read them on-demand through read_type_die. */ | |
c906108c | 10254 | case DW_TAG_subroutine_type: |
72019c9c | 10255 | case DW_TAG_set_type: |
c906108c | 10256 | case DW_TAG_array_type: |
c906108c | 10257 | case DW_TAG_pointer_type: |
c906108c | 10258 | case DW_TAG_ptr_to_member_type: |
c906108c | 10259 | case DW_TAG_reference_type: |
4297a3f0 | 10260 | case DW_TAG_rvalue_reference_type: |
c906108c | 10261 | case DW_TAG_string_type: |
c906108c | 10262 | break; |
134d01f1 | 10263 | |
c906108c | 10264 | case DW_TAG_base_type: |
a02abb62 | 10265 | case DW_TAG_subrange_type: |
cb249c71 | 10266 | case DW_TAG_typedef: |
134d01f1 DJ |
10267 | /* Add a typedef symbol for the type definition, if it has a |
10268 | DW_AT_name. */ | |
f792889a | 10269 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10270 | break; |
c906108c | 10271 | case DW_TAG_common_block: |
e7c27a73 | 10272 | read_common_block (die, cu); |
c906108c SS |
10273 | break; |
10274 | case DW_TAG_common_inclusion: | |
10275 | break; | |
d9fa45fe | 10276 | case DW_TAG_namespace: |
9068261f | 10277 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10278 | read_namespace (die, cu); |
d9fa45fe | 10279 | break; |
5d7cb8df | 10280 | case DW_TAG_module: |
9068261f | 10281 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10282 | read_module (die, cu); |
10283 | break; | |
d9fa45fe | 10284 | case DW_TAG_imported_declaration: |
9068261f | 10285 | cu->processing_has_namespace_info = true; |
74921315 KS |
10286 | if (read_namespace_alias (die, cu)) |
10287 | break; | |
86a73007 TT |
10288 | /* The declaration is not a global namespace alias. */ |
10289 | /* Fall through. */ | |
d9fa45fe | 10290 | case DW_TAG_imported_module: |
9068261f | 10291 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10292 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10293 | || cu->language != language_fortran)) | |
b98664d3 | 10294 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10295 | dwarf_tag_name (die->tag)); |
10296 | read_import_statement (die, cu); | |
d9fa45fe | 10297 | break; |
95554aad TT |
10298 | |
10299 | case DW_TAG_imported_unit: | |
10300 | process_imported_unit_die (die, cu); | |
10301 | break; | |
10302 | ||
71a3c369 TT |
10303 | case DW_TAG_variable: |
10304 | read_variable (die, cu); | |
10305 | break; | |
10306 | ||
c906108c | 10307 | default: |
e7c27a73 | 10308 | new_symbol (die, NULL, cu); |
c906108c SS |
10309 | break; |
10310 | } | |
10311 | } | |
ca69b9e6 DE |
10312 | \f |
10313 | /* DWARF name computation. */ | |
c906108c | 10314 | |
94af9270 KS |
10315 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10316 | needs to have the name of the scope prepended to the name listed in the | |
10317 | die. */ | |
10318 | ||
10319 | static int | |
10320 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10321 | { | |
1c809c68 TT |
10322 | struct attribute *attr; |
10323 | ||
94af9270 KS |
10324 | switch (die->tag) |
10325 | { | |
10326 | case DW_TAG_namespace: | |
10327 | case DW_TAG_typedef: | |
10328 | case DW_TAG_class_type: | |
10329 | case DW_TAG_interface_type: | |
10330 | case DW_TAG_structure_type: | |
10331 | case DW_TAG_union_type: | |
10332 | case DW_TAG_enumeration_type: | |
10333 | case DW_TAG_enumerator: | |
10334 | case DW_TAG_subprogram: | |
08a76f8a | 10335 | case DW_TAG_inlined_subroutine: |
94af9270 | 10336 | case DW_TAG_member: |
74921315 | 10337 | case DW_TAG_imported_declaration: |
94af9270 KS |
10338 | return 1; |
10339 | ||
10340 | case DW_TAG_variable: | |
c2b0a229 | 10341 | case DW_TAG_constant: |
94af9270 KS |
10342 | /* We only need to prefix "globally" visible variables. These include |
10343 | any variable marked with DW_AT_external or any variable that | |
10344 | lives in a namespace. [Variables in anonymous namespaces | |
10345 | require prefixing, but they are not DW_AT_external.] */ | |
10346 | ||
10347 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10348 | { | |
10349 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10350 | |
94af9270 KS |
10351 | return die_needs_namespace (die_specification (die, &spec_cu), |
10352 | spec_cu); | |
10353 | } | |
10354 | ||
1c809c68 | 10355 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10356 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10357 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10358 | return 0; |
10359 | /* A variable in a lexical block of some kind does not need a | |
10360 | namespace, even though in C++ such variables may be external | |
10361 | and have a mangled name. */ | |
10362 | if (die->parent->tag == DW_TAG_lexical_block | |
10363 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10364 | || die->parent->tag == DW_TAG_catch_block |
10365 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10366 | return 0; |
10367 | return 1; | |
94af9270 KS |
10368 | |
10369 | default: | |
10370 | return 0; | |
10371 | } | |
10372 | } | |
10373 | ||
73b9be8b KS |
10374 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10375 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10376 | defined for the given DIE. */ | |
10377 | ||
10378 | static struct attribute * | |
10379 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10380 | { | |
10381 | struct attribute *attr; | |
10382 | ||
10383 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10384 | if (attr == NULL) | |
10385 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10386 | ||
10387 | return attr; | |
10388 | } | |
10389 | ||
10390 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10391 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10392 | defined for the given DIE. */ | |
10393 | ||
10394 | static const char * | |
10395 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10396 | { | |
10397 | const char *linkage_name; | |
10398 | ||
10399 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10400 | if (linkage_name == NULL) | |
10401 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10402 | ||
10403 | return linkage_name; | |
10404 | } | |
10405 | ||
94af9270 | 10406 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10407 | compute the physname for the object, which include a method's: |
9c37b5ae | 10408 | - formal parameters (C++), |
a766d390 | 10409 | - receiver type (Go), |
a766d390 DE |
10410 | |
10411 | The term "physname" is a bit confusing. | |
10412 | For C++, for example, it is the demangled name. | |
10413 | For Go, for example, it's the mangled name. | |
94af9270 | 10414 | |
af6b7be1 JB |
10415 | For Ada, return the DIE's linkage name rather than the fully qualified |
10416 | name. PHYSNAME is ignored.. | |
10417 | ||
94af9270 KS |
10418 | The result is allocated on the objfile_obstack and canonicalized. */ |
10419 | ||
10420 | static const char * | |
15d034d0 TT |
10421 | dwarf2_compute_name (const char *name, |
10422 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10423 | int physname) |
10424 | { | |
518817b3 | 10425 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10426 | |
94af9270 KS |
10427 | if (name == NULL) |
10428 | name = dwarf2_name (die, cu); | |
10429 | ||
2ee7123e DE |
10430 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10431 | but otherwise compute it by typename_concat inside GDB. | |
10432 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10433 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10434 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10435 | will set the demangled name to the result of dwarf2_full_name, and it is |
10436 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10437 | if (cu->language == language_ada |
10438 | || (cu->language == language_fortran && physname)) | |
10439 | { | |
10440 | /* For Ada unit, we prefer the linkage name over the name, as | |
10441 | the former contains the exported name, which the user expects | |
10442 | to be able to reference. Ideally, we want the user to be able | |
10443 | to reference this entity using either natural or linkage name, | |
10444 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10445 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10446 | |
2ee7123e DE |
10447 | if (linkage_name != NULL) |
10448 | return linkage_name; | |
f55ee35c JK |
10449 | } |
10450 | ||
94af9270 KS |
10451 | /* These are the only languages we know how to qualify names in. */ |
10452 | if (name != NULL | |
9c37b5ae | 10453 | && (cu->language == language_cplus |
c44af4eb TT |
10454 | || cu->language == language_fortran || cu->language == language_d |
10455 | || cu->language == language_rust)) | |
94af9270 KS |
10456 | { |
10457 | if (die_needs_namespace (die, cu)) | |
10458 | { | |
0d5cff50 | 10459 | const char *prefix; |
34a68019 | 10460 | const char *canonical_name = NULL; |
94af9270 | 10461 | |
d7e74731 PA |
10462 | string_file buf; |
10463 | ||
94af9270 | 10464 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10465 | if (*prefix != '\0') |
10466 | { | |
43816ebc TT |
10467 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10468 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10469 | |
43816ebc | 10470 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10471 | } |
10472 | else | |
d7e74731 | 10473 | buf.puts (name); |
94af9270 | 10474 | |
98bfdba5 PA |
10475 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10476 | as children with DW_TAG_template_type_param or | |
10477 | DW_TAG_value_type_param. If the latter, add them to the name | |
10478 | here. If the name already has template parameters, then | |
10479 | skip this step; some versions of GCC emit both, and | |
10480 | it is more efficient to use the pre-computed name. | |
10481 | ||
10482 | Something to keep in mind about this process: it is very | |
10483 | unlikely, or in some cases downright impossible, to produce | |
10484 | something that will match the mangled name of a function. | |
10485 | If the definition of the function has the same debug info, | |
10486 | we should be able to match up with it anyway. But fallbacks | |
10487 | using the minimal symbol, for instance to find a method | |
10488 | implemented in a stripped copy of libstdc++, will not work. | |
10489 | If we do not have debug info for the definition, we will have to | |
10490 | match them up some other way. | |
10491 | ||
10492 | When we do name matching there is a related problem with function | |
10493 | templates; two instantiated function templates are allowed to | |
10494 | differ only by their return types, which we do not add here. */ | |
10495 | ||
10496 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10497 | { | |
10498 | struct attribute *attr; | |
10499 | struct die_info *child; | |
10500 | int first = 1; | |
10501 | ||
10502 | die->building_fullname = 1; | |
10503 | ||
10504 | for (child = die->child; child != NULL; child = child->sibling) | |
10505 | { | |
10506 | struct type *type; | |
12df843f | 10507 | LONGEST value; |
d521ce57 | 10508 | const gdb_byte *bytes; |
98bfdba5 PA |
10509 | struct dwarf2_locexpr_baton *baton; |
10510 | struct value *v; | |
10511 | ||
10512 | if (child->tag != DW_TAG_template_type_param | |
10513 | && child->tag != DW_TAG_template_value_param) | |
10514 | continue; | |
10515 | ||
10516 | if (first) | |
10517 | { | |
d7e74731 | 10518 | buf.puts ("<"); |
98bfdba5 PA |
10519 | first = 0; |
10520 | } | |
10521 | else | |
d7e74731 | 10522 | buf.puts (", "); |
98bfdba5 PA |
10523 | |
10524 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10525 | if (attr == NULL) | |
10526 | { | |
b98664d3 | 10527 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10528 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10529 | continue; |
10530 | } | |
10531 | type = die_type (child, cu); | |
10532 | ||
10533 | if (child->tag == DW_TAG_template_type_param) | |
10534 | { | |
c1ec8cea TT |
10535 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10536 | &type_print_raw_options); | |
98bfdba5 PA |
10537 | continue; |
10538 | } | |
10539 | ||
10540 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10541 | if (attr == NULL) | |
10542 | { | |
b98664d3 | 10543 | complaint (_("template parameter missing " |
3e43a32a | 10544 | "DW_AT_const_value")); |
d7e74731 | 10545 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10546 | continue; |
10547 | } | |
10548 | ||
10549 | dwarf2_const_value_attr (attr, type, name, | |
10550 | &cu->comp_unit_obstack, cu, | |
10551 | &value, &bytes, &baton); | |
10552 | ||
10553 | if (TYPE_NOSIGN (type)) | |
10554 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10555 | changed, this can use value_print instead. */ | |
d7e74731 | 10556 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10557 | else |
10558 | { | |
10559 | struct value_print_options opts; | |
10560 | ||
10561 | if (baton != NULL) | |
10562 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10563 | baton->data, | |
10564 | baton->size, | |
10565 | baton->per_cu); | |
10566 | else if (bytes != NULL) | |
10567 | { | |
10568 | v = allocate_value (type); | |
10569 | memcpy (value_contents_writeable (v), bytes, | |
10570 | TYPE_LENGTH (type)); | |
10571 | } | |
10572 | else | |
10573 | v = value_from_longest (type, value); | |
10574 | ||
3e43a32a MS |
10575 | /* Specify decimal so that we do not depend on |
10576 | the radix. */ | |
98bfdba5 PA |
10577 | get_formatted_print_options (&opts, 'd'); |
10578 | opts.raw = 1; | |
d7e74731 | 10579 | value_print (v, &buf, &opts); |
98bfdba5 | 10580 | release_value (v); |
98bfdba5 PA |
10581 | } |
10582 | } | |
10583 | ||
10584 | die->building_fullname = 0; | |
10585 | ||
10586 | if (!first) | |
10587 | { | |
10588 | /* Close the argument list, with a space if necessary | |
10589 | (nested templates). */ | |
d7e74731 PA |
10590 | if (!buf.empty () && buf.string ().back () == '>') |
10591 | buf.puts (" >"); | |
98bfdba5 | 10592 | else |
d7e74731 | 10593 | buf.puts (">"); |
98bfdba5 PA |
10594 | } |
10595 | } | |
10596 | ||
9c37b5ae | 10597 | /* For C++ methods, append formal parameter type |
94af9270 | 10598 | information, if PHYSNAME. */ |
6e70227d | 10599 | |
94af9270 | 10600 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10601 | && cu->language == language_cplus) |
94af9270 KS |
10602 | { |
10603 | struct type *type = read_type_die (die, cu); | |
10604 | ||
d7e74731 | 10605 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10606 | &type_print_raw_options); |
94af9270 | 10607 | |
9c37b5ae | 10608 | if (cu->language == language_cplus) |
94af9270 | 10609 | { |
60430eff DJ |
10610 | /* Assume that an artificial first parameter is |
10611 | "this", but do not crash if it is not. RealView | |
10612 | marks unnamed (and thus unused) parameters as | |
10613 | artificial; there is no way to differentiate | |
10614 | the two cases. */ | |
94af9270 KS |
10615 | if (TYPE_NFIELDS (type) > 0 |
10616 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10617 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10618 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10619 | 0)))) | |
d7e74731 | 10620 | buf.puts (" const"); |
94af9270 KS |
10621 | } |
10622 | } | |
10623 | ||
d7e74731 | 10624 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10625 | |
10626 | if (cu->language == language_cplus) | |
34a68019 | 10627 | canonical_name |
322a8516 | 10628 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10629 | &objfile->per_bfd->storage_obstack); |
10630 | ||
10631 | /* If we only computed INTERMEDIATE_NAME, or if | |
10632 | INTERMEDIATE_NAME is already canonical, then we need to | |
10633 | copy it to the appropriate obstack. */ | |
322a8516 | 10634 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
efba19b0 TT |
10635 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, |
10636 | intermediate_name); | |
34a68019 TT |
10637 | else |
10638 | name = canonical_name; | |
94af9270 KS |
10639 | } |
10640 | } | |
10641 | ||
10642 | return name; | |
10643 | } | |
10644 | ||
0114d602 DJ |
10645 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10646 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10647 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10648 | not have a name. NAME may either be from a previous call to |
10649 | dwarf2_name or NULL. | |
10650 | ||
9c37b5ae | 10651 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10652 | |
10653 | static const char * | |
15d034d0 | 10654 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10655 | { |
94af9270 KS |
10656 | return dwarf2_compute_name (name, die, cu, 0); |
10657 | } | |
0114d602 | 10658 | |
94af9270 KS |
10659 | /* Construct a physname for the given DIE in CU. NAME may either be |
10660 | from a previous call to dwarf2_name or NULL. The result will be | |
10661 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10662 | name. | |
0114d602 | 10663 | |
9c37b5ae | 10664 | The output string will be canonicalized (if C++). */ |
0114d602 | 10665 | |
94af9270 | 10666 | static const char * |
15d034d0 | 10667 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10668 | { |
518817b3 | 10669 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10670 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10671 | int need_copy = 1; |
10672 | ||
10673 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10674 | on its own. */ | |
10675 | if (!die_needs_namespace (die, cu)) | |
10676 | return dwarf2_compute_name (name, die, cu, 1); | |
10677 | ||
73b9be8b | 10678 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10679 | |
e98c9e7c TT |
10680 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10681 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10682 | if (cu->language == language_rust && mangled != NULL | |
10683 | && strchr (mangled, '{') != NULL) | |
10684 | mangled = NULL; | |
10685 | ||
900e11f9 JK |
10686 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10687 | has computed. */ | |
791afaa2 | 10688 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10689 | if (mangled != NULL) |
900e11f9 | 10690 | { |
900e11f9 | 10691 | |
59cc4834 JB |
10692 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10693 | { | |
10694 | /* Do nothing (do not demangle the symbol name). */ | |
10695 | } | |
10696 | else if (cu->language == language_go) | |
a766d390 | 10697 | { |
5e2db402 TT |
10698 | /* This is a lie, but we already lie to the caller new_symbol. |
10699 | new_symbol assumes we return the mangled name. | |
a766d390 | 10700 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10701 | } |
10702 | else | |
10703 | { | |
0eb876f5 JB |
10704 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10705 | their return type. It is easier for GDB users to search | |
10706 | for such functions as `name(params)' than `long name(params)'. | |
10707 | In such case the minimal symbol names do not match the full | |
10708 | symbol names but for template functions there is never a need | |
10709 | to look up their definition from their declaration so | |
10710 | the only disadvantage remains the minimal symbol variant | |
10711 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10712 | demangled.reset (gdb_demangle (mangled, |
10713 | (DMGL_PARAMS | DMGL_ANSI | |
10714 | | DMGL_RET_DROP))); | |
a766d390 | 10715 | } |
900e11f9 | 10716 | if (demangled) |
791afaa2 | 10717 | canon = demangled.get (); |
900e11f9 JK |
10718 | else |
10719 | { | |
10720 | canon = mangled; | |
10721 | need_copy = 0; | |
10722 | } | |
10723 | } | |
10724 | ||
10725 | if (canon == NULL || check_physname) | |
10726 | { | |
10727 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10728 | ||
10729 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10730 | { | |
10731 | /* It may not mean a bug in GDB. The compiler could also | |
10732 | compute DW_AT_linkage_name incorrectly. But in such case | |
10733 | GDB would need to be bug-to-bug compatible. */ | |
10734 | ||
b98664d3 | 10735 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10736 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10737 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10738 | objfile_name (objfile)); |
900e11f9 JK |
10739 | |
10740 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10741 | is available here - over computed PHYSNAME. It is safer | |
10742 | against both buggy GDB and buggy compilers. */ | |
10743 | ||
10744 | retval = canon; | |
10745 | } | |
10746 | else | |
10747 | { | |
10748 | retval = physname; | |
10749 | need_copy = 0; | |
10750 | } | |
10751 | } | |
10752 | else | |
10753 | retval = canon; | |
10754 | ||
10755 | if (need_copy) | |
021887d8 | 10756 | retval = obstack_strdup (&objfile->per_bfd->storage_obstack, retval); |
900e11f9 | 10757 | |
900e11f9 | 10758 | return retval; |
0114d602 DJ |
10759 | } |
10760 | ||
74921315 KS |
10761 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10762 | a new symbol for it. | |
10763 | ||
10764 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10765 | ||
10766 | static int | |
10767 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10768 | { | |
10769 | struct attribute *attr; | |
10770 | ||
10771 | /* If the die does not have a name, this is not a namespace | |
10772 | alias. */ | |
10773 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10774 | if (attr != NULL) | |
10775 | { | |
10776 | int num; | |
10777 | struct die_info *d = die; | |
10778 | struct dwarf2_cu *imported_cu = cu; | |
10779 | ||
10780 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10781 | keep inspecting DIEs until we hit the underlying import. */ | |
10782 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10783 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10784 | { | |
10785 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10786 | if (attr == NULL) | |
10787 | break; | |
10788 | ||
10789 | d = follow_die_ref (d, attr, &imported_cu); | |
10790 | if (d->tag != DW_TAG_imported_declaration) | |
10791 | break; | |
10792 | } | |
10793 | ||
10794 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10795 | { | |
b98664d3 | 10796 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10797 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10798 | return 0; |
10799 | } | |
10800 | ||
10801 | if (attr != NULL) | |
10802 | { | |
10803 | struct type *type; | |
9c541725 | 10804 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 10805 | |
9c541725 | 10806 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10807 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10808 | { | |
10809 | /* This declaration is a global namespace alias. Add | |
10810 | a symbol for it whose type is the aliased namespace. */ | |
10811 | new_symbol (die, type, cu); | |
10812 | return 1; | |
10813 | } | |
10814 | } | |
10815 | } | |
10816 | ||
10817 | return 0; | |
10818 | } | |
10819 | ||
22cee43f | 10820 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10821 | current context for CU. |
22cee43f PMR |
10822 | |
10823 | For Ada, imported declarations can materialize renamings, which *may* be | |
10824 | global. However it is impossible (for now?) in DWARF to distinguish | |
10825 | "external" imported declarations and "static" ones. As all imported | |
10826 | declarations seem to be static in all other languages, make them all CU-wide | |
10827 | global only in Ada. */ | |
10828 | ||
10829 | static struct using_direct ** | |
804d2729 | 10830 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10831 | { |
c24bdb02 KS |
10832 | if (cu->language == language_ada |
10833 | && cu->get_builder ()->outermost_context_p ()) | |
10834 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10835 | else |
c24bdb02 | 10836 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10837 | } |
10838 | ||
27aa8d6a SW |
10839 | /* Read the import statement specified by the given die and record it. */ |
10840 | ||
10841 | static void | |
10842 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10843 | { | |
518817b3 | 10844 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10845 | struct attribute *import_attr; |
32019081 | 10846 | struct die_info *imported_die, *child_die; |
de4affc9 | 10847 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10848 | const char *imported_name; |
794684b6 | 10849 | const char *imported_name_prefix; |
13387711 SW |
10850 | const char *canonical_name; |
10851 | const char *import_alias; | |
10852 | const char *imported_declaration = NULL; | |
794684b6 | 10853 | const char *import_prefix; |
eb1e02fd | 10854 | std::vector<const char *> excludes; |
13387711 | 10855 | |
27aa8d6a SW |
10856 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10857 | if (import_attr == NULL) | |
10858 | { | |
b98664d3 | 10859 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10860 | dwarf_tag_name (die->tag)); |
10861 | return; | |
10862 | } | |
10863 | ||
de4affc9 CC |
10864 | imported_cu = cu; |
10865 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10866 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10867 | if (imported_name == NULL) |
10868 | { | |
10869 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10870 | ||
10871 | The import in the following code: | |
10872 | namespace A | |
10873 | { | |
10874 | typedef int B; | |
10875 | } | |
10876 | ||
10877 | int main () | |
10878 | { | |
10879 | using A::B; | |
10880 | B b; | |
10881 | return b; | |
10882 | } | |
10883 | ||
10884 | ... | |
10885 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10886 | <52> DW_AT_decl_file : 1 | |
10887 | <53> DW_AT_decl_line : 6 | |
10888 | <54> DW_AT_import : <0x75> | |
10889 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10890 | <59> DW_AT_name : B | |
10891 | <5b> DW_AT_decl_file : 1 | |
10892 | <5c> DW_AT_decl_line : 2 | |
10893 | <5d> DW_AT_type : <0x6e> | |
10894 | ... | |
10895 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10896 | <76> DW_AT_byte_size : 4 | |
10897 | <77> DW_AT_encoding : 5 (signed) | |
10898 | ||
10899 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10900 | This case will be ignored until the gcc bug is fixed. */ | |
10901 | return; | |
10902 | } | |
10903 | ||
82856980 SW |
10904 | /* Figure out the local name after import. */ |
10905 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10906 | |
794684b6 SW |
10907 | /* Figure out where the statement is being imported to. */ |
10908 | import_prefix = determine_prefix (die, cu); | |
10909 | ||
10910 | /* Figure out what the scope of the imported die is and prepend it | |
10911 | to the name of the imported die. */ | |
de4affc9 | 10912 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10913 | |
f55ee35c JK |
10914 | if (imported_die->tag != DW_TAG_namespace |
10915 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10916 | { |
13387711 SW |
10917 | imported_declaration = imported_name; |
10918 | canonical_name = imported_name_prefix; | |
794684b6 | 10919 | } |
13387711 | 10920 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10921 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10922 | imported_name_prefix, |
10923 | (cu->language == language_d ? "." : "::"), | |
10924 | imported_name, (char *) NULL); | |
13387711 SW |
10925 | else |
10926 | canonical_name = imported_name; | |
794684b6 | 10927 | |
32019081 JK |
10928 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10929 | for (child_die = die->child; child_die && child_die->tag; | |
10930 | child_die = sibling_die (child_die)) | |
10931 | { | |
10932 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10933 | represented by an imported module entry with an import attribute | |
10934 | referring to the module and owned entries corresponding to those | |
10935 | entities that are renamed as part of being imported. */ | |
10936 | ||
10937 | if (child_die->tag != DW_TAG_imported_declaration) | |
10938 | { | |
b98664d3 | 10939 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10940 | "- DIE at %s [in module %s]"), |
10941 | sect_offset_str (child_die->sect_off), | |
10942 | objfile_name (objfile)); | |
32019081 JK |
10943 | continue; |
10944 | } | |
10945 | ||
10946 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10947 | if (import_attr == NULL) | |
10948 | { | |
b98664d3 | 10949 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10950 | dwarf_tag_name (child_die->tag)); |
10951 | continue; | |
10952 | } | |
10953 | ||
10954 | imported_cu = cu; | |
10955 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10956 | &imported_cu); | |
10957 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10958 | if (imported_name == NULL) | |
10959 | { | |
b98664d3 | 10960 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10961 | "imported name - DIE at %s [in module %s]"), |
10962 | sect_offset_str (child_die->sect_off), | |
10963 | objfile_name (objfile)); | |
32019081 JK |
10964 | continue; |
10965 | } | |
10966 | ||
eb1e02fd | 10967 | excludes.push_back (imported_name); |
32019081 JK |
10968 | |
10969 | process_die (child_die, cu); | |
10970 | } | |
10971 | ||
804d2729 | 10972 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10973 | import_prefix, |
10974 | canonical_name, | |
10975 | import_alias, | |
10976 | imported_declaration, | |
10977 | excludes, | |
10978 | 0, | |
10979 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10980 | } |
10981 | ||
5230b05a WT |
10982 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10983 | types, but gives them a size of zero. Starting with version 14, | |
10984 | ICC is compatible with GCC. */ | |
10985 | ||
9068261f | 10986 | static bool |
5230b05a WT |
10987 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10988 | { | |
10989 | if (!cu->checked_producer) | |
10990 | check_producer (cu); | |
10991 | ||
10992 | return cu->producer_is_icc_lt_14; | |
10993 | } | |
10994 | ||
eb77c9df AB |
10995 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10996 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10997 | which says that void functions should not have a DW_AT_type. */ | |
10998 | ||
10999 | static bool | |
11000 | producer_is_icc (struct dwarf2_cu *cu) | |
11001 | { | |
11002 | if (!cu->checked_producer) | |
11003 | check_producer (cu); | |
11004 | ||
11005 | return cu->producer_is_icc; | |
11006 | } | |
11007 | ||
1b80a9fa JK |
11008 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11009 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11010 | this, it was first present in GCC release 4.3.0. */ | |
11011 | ||
9068261f | 11012 | static bool |
1b80a9fa JK |
11013 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11014 | { | |
11015 | if (!cu->checked_producer) | |
11016 | check_producer (cu); | |
11017 | ||
11018 | return cu->producer_is_gcc_lt_4_3; | |
11019 | } | |
11020 | ||
d721ba37 PA |
11021 | static file_and_directory |
11022 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11023 | { |
d721ba37 PA |
11024 | file_and_directory res; |
11025 | ||
9291a0cd TT |
11026 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11027 | is not a source language identifier. */ | |
d721ba37 PA |
11028 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11029 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11030 | |
d721ba37 PA |
11031 | if (res.comp_dir == NULL |
11032 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11033 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11034 | { |
d721ba37 PA |
11035 | res.comp_dir_storage = ldirname (res.name); |
11036 | if (!res.comp_dir_storage.empty ()) | |
11037 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11038 | } |
d721ba37 | 11039 | if (res.comp_dir != NULL) |
9291a0cd TT |
11040 | { |
11041 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11042 | directory, get rid of it. */ | |
d721ba37 | 11043 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11044 | |
d721ba37 PA |
11045 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11046 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11047 | } |
11048 | ||
d721ba37 PA |
11049 | if (res.name == NULL) |
11050 | res.name = "<unknown>"; | |
11051 | ||
11052 | return res; | |
9291a0cd TT |
11053 | } |
11054 | ||
f4dc4d17 DE |
11055 | /* Handle DW_AT_stmt_list for a compilation unit. |
11056 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11057 | COMP_DIR is the compilation directory. LOWPC is passed to |
11058 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11059 | |
11060 | static void | |
11061 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11062 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11063 | { |
518817b3 SM |
11064 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11065 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11066 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11067 | struct attribute *attr; |
527f3840 JK |
11068 | struct line_header line_header_local; |
11069 | hashval_t line_header_local_hash; | |
527f3840 JK |
11070 | void **slot; |
11071 | int decode_mapping; | |
2ab95328 | 11072 | |
f4dc4d17 DE |
11073 | gdb_assert (! cu->per_cu->is_debug_types); |
11074 | ||
2ab95328 | 11075 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11076 | if (attr == NULL) |
11077 | return; | |
11078 | ||
9c541725 | 11079 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11080 | |
11081 | /* The line header hash table is only created if needed (it exists to | |
11082 | prevent redundant reading of the line table for partial_units). | |
11083 | If we're given a partial_unit, we'll need it. If we're given a | |
11084 | compile_unit, then use the line header hash table if it's already | |
11085 | created, but don't create one just yet. */ | |
11086 | ||
11087 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11088 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11089 | { |
527f3840 JK |
11090 | dwarf2_per_objfile->line_header_hash |
11091 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11092 | line_header_eq_voidp, | |
11093 | free_line_header_voidp, | |
11094 | &objfile->objfile_obstack, | |
11095 | hashtab_obstack_allocate, | |
11096 | dummy_obstack_deallocate); | |
11097 | } | |
2ab95328 | 11098 | |
9c541725 | 11099 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11100 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11101 | line_header_local_hash = line_header_hash (&line_header_local); | |
11102 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11103 | { | |
11104 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11105 | &line_header_local, | |
11106 | line_header_local_hash, NO_INSERT); | |
11107 | ||
11108 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11109 | is not present in *SLOT (since if there is something in *SLOT then | |
11110 | it will be for a partial_unit). */ | |
11111 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11112 | { |
527f3840 | 11113 | gdb_assert (*slot != NULL); |
9a3c8263 | 11114 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11115 | return; |
dee91e82 | 11116 | } |
2ab95328 | 11117 | } |
527f3840 JK |
11118 | |
11119 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11120 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11121 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11122 | if (lh == NULL) | |
527f3840 | 11123 | return; |
4c8aa72d PA |
11124 | |
11125 | cu->line_header = lh.release (); | |
11126 | cu->line_header_die_owner = die; | |
527f3840 JK |
11127 | |
11128 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11129 | slot = NULL; | |
11130 | else | |
11131 | { | |
11132 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11133 | &line_header_local, | |
11134 | line_header_local_hash, INSERT); | |
11135 | gdb_assert (slot != NULL); | |
11136 | } | |
11137 | if (slot != NULL && *slot == NULL) | |
11138 | { | |
11139 | /* This newly decoded line number information unit will be owned | |
11140 | by line_header_hash hash table. */ | |
11141 | *slot = cu->line_header; | |
4c8aa72d | 11142 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11143 | } |
11144 | else | |
11145 | { | |
11146 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11147 | may be already used by multiple CUs. Create only temporary decoded | |
11148 | line_header for this CU - it may happen at most once for each line | |
11149 | number information unit. And if we're not using line_header_hash | |
11150 | then this is what we want as well. */ | |
11151 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11152 | } |
11153 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11154 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11155 | decode_mapping); | |
fff8551c | 11156 | |
2ab95328 TT |
11157 | } |
11158 | ||
95554aad | 11159 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11160 | |
c906108c | 11161 | static void |
e7c27a73 | 11162 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11163 | { |
518817b3 SM |
11164 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11165 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11166 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11167 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11168 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11169 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11170 | struct attribute *attr; | |
c906108c | 11171 | struct die_info *child_die; |
e142c38c | 11172 | CORE_ADDR baseaddr; |
6e70227d | 11173 | |
380618d6 | 11174 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11175 | baseaddr = objfile->text_section_offset (); |
c906108c | 11176 | |
fae299cd | 11177 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11178 | |
11179 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11180 | from finish_block. */ | |
2acceee2 | 11181 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11182 | lowpc = highpc; |
3e29f34a | 11183 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11184 | |
d721ba37 | 11185 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11186 | |
f4b8a18d KW |
11187 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11188 | standardised yet. As a workaround for the language detection we fall | |
11189 | back to the DW_AT_producer string. */ | |
11190 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11191 | cu->language = language_opencl; | |
11192 | ||
3019eac3 DE |
11193 | /* Similar hack for Go. */ |
11194 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11195 | set_cu_language (DW_LANG_Go, cu); | |
11196 | ||
c24bdb02 | 11197 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11198 | |
11199 | /* Decode line number information if present. We do this before | |
11200 | processing child DIEs, so that the line header table is available | |
11201 | for DW_AT_decl_file. */ | |
d721ba37 | 11202 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11203 | |
11204 | /* Process all dies in compilation unit. */ | |
11205 | if (die->child != NULL) | |
11206 | { | |
11207 | child_die = die->child; | |
11208 | while (child_die && child_die->tag) | |
11209 | { | |
11210 | process_die (child_die, cu); | |
11211 | child_die = sibling_die (child_die); | |
11212 | } | |
11213 | } | |
11214 | ||
11215 | /* Decode macro information, if present. Dwarf 2 macro information | |
11216 | refers to information in the line number info statement program | |
11217 | header, so we can only read it if we've read the header | |
11218 | successfully. */ | |
0af92d60 JK |
11219 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11220 | if (attr == NULL) | |
11221 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11222 | if (attr && cu->line_header) |
11223 | { | |
11224 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11225 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11226 | |
43f3e411 | 11227 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11228 | } |
11229 | else | |
11230 | { | |
11231 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11232 | if (attr && cu->line_header) | |
11233 | { | |
11234 | unsigned int macro_offset = DW_UNSND (attr); | |
11235 | ||
43f3e411 | 11236 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11237 | } |
11238 | } | |
3019eac3 DE |
11239 | } |
11240 | ||
c24bdb02 KS |
11241 | void |
11242 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11243 | { |
f4dc4d17 DE |
11244 | struct type_unit_group *tu_group; |
11245 | int first_time; | |
3019eac3 | 11246 | struct attribute *attr; |
9c541725 | 11247 | unsigned int i; |
0186c6a7 | 11248 | struct signatured_type *sig_type; |
3019eac3 | 11249 | |
f4dc4d17 | 11250 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11251 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11252 | |
c24bdb02 | 11253 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11254 | |
f4dc4d17 | 11255 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11256 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11257 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11258 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11259 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11260 | |
11261 | /* If we've already processed this stmt_list there's no real need to | |
11262 | do it again, we could fake it and just recreate the part we need | |
11263 | (file name,index -> symtab mapping). If data shows this optimization | |
11264 | is useful we can do it then. */ | |
43f3e411 | 11265 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11266 | |
11267 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11268 | debug info. */ | |
fff8551c | 11269 | line_header_up lh; |
f4dc4d17 | 11270 | if (attr != NULL) |
3019eac3 | 11271 | { |
9c541725 | 11272 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11273 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11274 | } |
11275 | if (lh == NULL) | |
11276 | { | |
11277 | if (first_time) | |
c24bdb02 | 11278 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11279 | else |
11280 | { | |
11281 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11282 | gdb_assert (m_builder == nullptr); |
804d2729 | 11283 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11284 | m_builder.reset (new struct buildsym_compunit |
11285 | (COMPUNIT_OBJFILE (cust), "", | |
11286 | COMPUNIT_DIRNAME (cust), | |
11287 | compunit_language (cust), | |
11288 | 0, cust)); | |
f4dc4d17 | 11289 | } |
f4dc4d17 | 11290 | return; |
3019eac3 DE |
11291 | } |
11292 | ||
c24bdb02 KS |
11293 | line_header = lh.release (); |
11294 | line_header_die_owner = die; | |
3019eac3 | 11295 | |
f4dc4d17 DE |
11296 | if (first_time) |
11297 | { | |
c24bdb02 | 11298 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11299 | |
1fd60fc0 DE |
11300 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11301 | still initializing it, and our caller (a few levels up) | |
11302 | process_full_type_unit still needs to know if this is the first | |
11303 | time. */ | |
11304 | ||
7ba99d21 | 11305 | tu_group->num_symtabs = line_header->file_names_size (); |
4c8aa72d | 11306 | tu_group->symtabs = XNEWVEC (struct symtab *, |
7ba99d21 | 11307 | line_header->file_names_size ()); |
3019eac3 | 11308 | |
7ba99d21 AT |
11309 | auto &file_names = line_header->file_names (); |
11310 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11311 | { |
7ba99d21 | 11312 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11313 | dwarf2_start_subfile (this, fe.name, |
11314 | fe.include_dir (line_header)); | |
11315 | buildsym_compunit *b = get_builder (); | |
11316 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11317 | { |
4c8aa72d PA |
11318 | /* NOTE: start_subfile will recognize when it's been |
11319 | passed a file it has already seen. So we can't | |
11320 | assume there's a simple mapping from | |
11321 | cu->line_header->file_names to subfiles, plus | |
11322 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11323 | b->get_current_subfile ()->symtab |
11324 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11325 | } |
11326 | ||
c24bdb02 | 11327 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11328 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11329 | } |
11330 | } | |
11331 | else | |
3019eac3 | 11332 | { |
c24bdb02 | 11333 | gdb_assert (m_builder == nullptr); |
804d2729 | 11334 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11335 | m_builder.reset (new struct buildsym_compunit |
11336 | (COMPUNIT_OBJFILE (cust), "", | |
11337 | COMPUNIT_DIRNAME (cust), | |
11338 | compunit_language (cust), | |
11339 | 0, cust)); | |
f4dc4d17 | 11340 | |
7ba99d21 AT |
11341 | auto &file_names = line_header->file_names (); |
11342 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11343 | { |
7ba99d21 | 11344 | file_entry &fe = file_names[i]; |
4c8aa72d | 11345 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11346 | } |
3019eac3 DE |
11347 | } |
11348 | ||
f4dc4d17 DE |
11349 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11350 | so they don't have a "real" (so to speak) symtab anyway. | |
11351 | There is later code that will assign the main symtab to all symbols | |
11352 | that don't have one. We need to handle the case of a symbol with a | |
11353 | missing symtab (DW_AT_decl_file) anyway. */ | |
11354 | } | |
3019eac3 | 11355 | |
f4dc4d17 DE |
11356 | /* Process DW_TAG_type_unit. |
11357 | For TUs we want to skip the first top level sibling if it's not the | |
11358 | actual type being defined by this TU. In this case the first top | |
11359 | level sibling is there to provide context only. */ | |
3019eac3 | 11360 | |
f4dc4d17 DE |
11361 | static void |
11362 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11363 | { | |
11364 | struct die_info *child_die; | |
3019eac3 | 11365 | |
f4dc4d17 DE |
11366 | prepare_one_comp_unit (cu, die, language_minimal); |
11367 | ||
11368 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11369 | We do this before processing child DIEs, so that the line header table | |
11370 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11371 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11372 | |
11373 | if (die->child != NULL) | |
11374 | { | |
11375 | child_die = die->child; | |
11376 | while (child_die && child_die->tag) | |
11377 | { | |
11378 | process_die (child_die, cu); | |
11379 | child_die = sibling_die (child_die); | |
11380 | } | |
11381 | } | |
3019eac3 DE |
11382 | } |
11383 | \f | |
80626a55 DE |
11384 | /* DWO/DWP files. |
11385 | ||
11386 | http://gcc.gnu.org/wiki/DebugFission | |
11387 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11388 | ||
11389 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11390 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11391 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11392 | |
11393 | static hashval_t | |
11394 | hash_dwo_file (const void *item) | |
11395 | { | |
9a3c8263 | 11396 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11397 | hashval_t hash; |
3019eac3 | 11398 | |
a2ce51a0 DE |
11399 | hash = htab_hash_string (dwo_file->dwo_name); |
11400 | if (dwo_file->comp_dir != NULL) | |
11401 | hash += htab_hash_string (dwo_file->comp_dir); | |
11402 | return hash; | |
3019eac3 DE |
11403 | } |
11404 | ||
11405 | static int | |
11406 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11407 | { | |
9a3c8263 SM |
11408 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11409 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11410 | |
a2ce51a0 DE |
11411 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11412 | return 0; | |
11413 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11414 | return lhs->comp_dir == rhs->comp_dir; | |
11415 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11416 | } |
11417 | ||
11418 | /* Allocate a hash table for DWO files. */ | |
11419 | ||
51ac9db5 | 11420 | static htab_up |
ed2dc618 | 11421 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11422 | { |
51ac9db5 SM |
11423 | auto delete_dwo_file = [] (void *item) |
11424 | { | |
11425 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11426 | ||
11427 | delete dwo_file; | |
11428 | }; | |
11429 | ||
11430 | return htab_up (htab_create_alloc_ex (41, | |
11431 | hash_dwo_file, | |
11432 | eq_dwo_file, | |
11433 | delete_dwo_file, | |
11434 | &objfile->objfile_obstack, | |
11435 | hashtab_obstack_allocate, | |
11436 | dummy_obstack_deallocate)); | |
3019eac3 DE |
11437 | } |
11438 | ||
80626a55 DE |
11439 | /* Lookup DWO file DWO_NAME. */ |
11440 | ||
11441 | static void ** | |
ed2dc618 SM |
11442 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11443 | const char *dwo_name, | |
11444 | const char *comp_dir) | |
80626a55 DE |
11445 | { |
11446 | struct dwo_file find_entry; | |
11447 | void **slot; | |
11448 | ||
11449 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11450 | dwarf2_per_objfile->dwo_files |
11451 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 | 11452 | |
0ac5b59e DE |
11453 | find_entry.dwo_name = dwo_name; |
11454 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11455 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11456 | INSERT); | |
80626a55 DE |
11457 | |
11458 | return slot; | |
11459 | } | |
11460 | ||
3019eac3 DE |
11461 | static hashval_t |
11462 | hash_dwo_unit (const void *item) | |
11463 | { | |
9a3c8263 | 11464 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11465 | |
11466 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11467 | return dwo_unit->signature; | |
11468 | } | |
11469 | ||
11470 | static int | |
11471 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11472 | { | |
9a3c8263 SM |
11473 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11474 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11475 | |
11476 | /* The signature is assumed to be unique within the DWO file. | |
11477 | So while object file CU dwo_id's always have the value zero, | |
11478 | that's OK, assuming each object file DWO file has only one CU, | |
11479 | and that's the rule for now. */ | |
11480 | return lhs->signature == rhs->signature; | |
11481 | } | |
11482 | ||
11483 | /* Allocate a hash table for DWO CUs,TUs. | |
11484 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11485 | ||
11486 | static htab_t | |
11487 | allocate_dwo_unit_table (struct objfile *objfile) | |
11488 | { | |
11489 | /* Start out with a pretty small number. | |
11490 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11491 | return htab_create_alloc_ex (3, | |
11492 | hash_dwo_unit, | |
11493 | eq_dwo_unit, | |
11494 | NULL, | |
11495 | &objfile->objfile_obstack, | |
11496 | hashtab_obstack_allocate, | |
11497 | dummy_obstack_deallocate); | |
11498 | } | |
11499 | ||
19c3d4c9 | 11500 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11501 | |
11502 | static void | |
19c3d4c9 DE |
11503 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11504 | const gdb_byte *info_ptr, | |
11505 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11506 | struct dwo_file *dwo_file, |
11507 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11508 | { |
11509 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11510 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11511 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11512 | |
a084a2a6 AT |
11513 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11514 | if (!signature.has_value ()) | |
3019eac3 | 11515 | { |
b98664d3 | 11516 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11517 | " its dwo_id [in module %s]"), |
9d8780f0 | 11518 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11519 | return; |
11520 | } | |
11521 | ||
3019eac3 | 11522 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11523 | dwo_unit->signature = *signature; |
8a0459fd | 11524 | dwo_unit->section = section; |
9c541725 | 11525 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11526 | dwo_unit->length = cu->per_cu->length; |
11527 | ||
b4f54984 | 11528 | if (dwarf_read_debug) |
9d8780f0 SM |
11529 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11530 | sect_offset_str (sect_off), | |
9c541725 | 11531 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11532 | } |
11533 | ||
33c5cd75 | 11534 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11535 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11536 | |
33c5cd75 | 11537 | static void |
ed2dc618 | 11538 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
11539 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
11540 | dwarf2_section_info §ion, htab_t &cus_htab) | |
3019eac3 DE |
11541 | { |
11542 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11543 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11544 | |
96b79293 | 11545 | section.read (objfile); |
33c5cd75 | 11546 | info_ptr = section.buffer; |
3019eac3 DE |
11547 | |
11548 | if (info_ptr == NULL) | |
33c5cd75 | 11549 | return; |
3019eac3 | 11550 | |
b4f54984 | 11551 | if (dwarf_read_debug) |
19c3d4c9 DE |
11552 | { |
11553 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11554 | section.get_name (), |
11555 | section.get_file_name ()); | |
19c3d4c9 | 11556 | } |
3019eac3 | 11557 | |
33c5cd75 | 11558 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11559 | while (info_ptr < end_ptr) |
11560 | { | |
11561 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11562 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11563 | struct dwo_unit *dwo_unit; |
11564 | void **slot; | |
11565 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11566 | |
11567 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11568 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11569 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11570 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11571 | per_cu.section = §ion; | |
11572 | ||
c0ab21c2 TT |
11573 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11574 | if (!reader.dummy_p) | |
11575 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11576 | &dwo_file, &read_unit); |
33c5cd75 DB |
11577 | info_ptr += per_cu.length; |
11578 | ||
11579 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11580 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11581 | continue; |
3019eac3 | 11582 | |
33c5cd75 DB |
11583 | if (cus_htab == NULL) |
11584 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11585 | |
33c5cd75 | 11586 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11587 | *dwo_unit = read_unit; |
33c5cd75 DB |
11588 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); |
11589 | gdb_assert (slot != NULL); | |
11590 | if (*slot != NULL) | |
19c3d4c9 | 11591 | { |
33c5cd75 DB |
11592 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11593 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11594 | |
b98664d3 | 11595 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11596 | " the entry at offset %s, signature %s"), |
11597 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11598 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11599 | } |
33c5cd75 | 11600 | *slot = (void *)dwo_unit; |
3019eac3 | 11601 | } |
3019eac3 DE |
11602 | } |
11603 | ||
80626a55 DE |
11604 | /* DWP file .debug_{cu,tu}_index section format: |
11605 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11606 | ||
d2415c6c DE |
11607 | DWP Version 1: |
11608 | ||
80626a55 DE |
11609 | Both index sections have the same format, and serve to map a 64-bit |
11610 | signature to a set of section numbers. Each section begins with a header, | |
11611 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11612 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11613 | aligned at 8-byte boundaries in the file. | |
11614 | ||
d2415c6c DE |
11615 | The index section header consists of: |
11616 | ||
11617 | V, 32 bit version number | |
11618 | -, 32 bits unused | |
11619 | N, 32 bit number of compilation units or type units in the index | |
11620 | M, 32 bit number of slots in the hash table | |
80626a55 | 11621 | |
d2415c6c | 11622 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11623 | |
d2415c6c DE |
11624 | The hash table begins at offset 16 in the section, and consists of an array |
11625 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11626 | order of the application binary). Unused slots in the hash table are 0. | |
11627 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11628 | |
d2415c6c DE |
11629 | The parallel table begins immediately after the hash table |
11630 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11631 | array of 32-bit indexes (using the byte order of the application binary), | |
11632 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11633 | table contains a 32-bit index into the pool of section numbers. For unused | |
11634 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11635 | |
73869dc2 DE |
11636 | The pool of section numbers begins immediately following the hash table |
11637 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11638 | section numbers consists of an array of 32-bit words (using the byte order | |
11639 | of the application binary). Each item in the array is indexed starting | |
11640 | from 0. The hash table entry provides the index of the first section | |
11641 | number in the set. Additional section numbers in the set follow, and the | |
11642 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11643 | ||
11644 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11645 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11646 | be the second entry. Other members of the set may follow in any order. | |
11647 | ||
11648 | --- | |
11649 | ||
11650 | DWP Version 2: | |
11651 | ||
11652 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11653 | and the entries in the index tables are now offsets into these sections. | |
11654 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11655 | section. | |
11656 | ||
11657 | Index Section Contents: | |
11658 | Header | |
11659 | Hash Table of Signatures dwp_hash_table.hash_table | |
11660 | Parallel Table of Indices dwp_hash_table.unit_table | |
11661 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11662 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11663 | ||
11664 | The index section header consists of: | |
11665 | ||
11666 | V, 32 bit version number | |
11667 | L, 32 bit number of columns in the table of section offsets | |
11668 | N, 32 bit number of compilation units or type units in the index | |
11669 | M, 32 bit number of slots in the hash table | |
11670 | ||
11671 | Numbers are recorded using the byte order of the application binary. | |
11672 | ||
11673 | The hash table has the same format as version 1. | |
11674 | The parallel table of indices has the same format as version 1, | |
11675 | except that the entries are origin-1 indices into the table of sections | |
11676 | offsets and the table of section sizes. | |
11677 | ||
11678 | The table of offsets begins immediately following the parallel table | |
11679 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11680 | a two-dimensional array of 32-bit words (using the byte order of the | |
11681 | application binary), with L columns and N+1 rows, in row-major order. | |
11682 | Each row in the array is indexed starting from 0. The first row provides | |
11683 | a key to the remaining rows: each column in this row provides an identifier | |
11684 | for a debug section, and the offsets in the same column of subsequent rows | |
11685 | refer to that section. The section identifiers are: | |
11686 | ||
11687 | DW_SECT_INFO 1 .debug_info.dwo | |
11688 | DW_SECT_TYPES 2 .debug_types.dwo | |
11689 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11690 | DW_SECT_LINE 4 .debug_line.dwo | |
11691 | DW_SECT_LOC 5 .debug_loc.dwo | |
11692 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11693 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11694 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11695 | ||
11696 | The offsets provided by the CU and TU index sections are the base offsets | |
11697 | for the contributions made by each CU or TU to the corresponding section | |
11698 | in the package file. Each CU and TU header contains an abbrev_offset | |
11699 | field, used to find the abbreviations table for that CU or TU within the | |
11700 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11701 | be interpreted as relative to the base offset given in the index section. | |
11702 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11703 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11704 | and offsets into other debug sections obtained from DWARF attributes should | |
11705 | also be interpreted as relative to the corresponding base offset. | |
11706 | ||
11707 | The table of sizes begins immediately following the table of offsets. | |
11708 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11709 | with L columns and N rows, in row-major order. Each row in the array is | |
11710 | indexed starting from 1 (row 0 is shared by the two tables). | |
11711 | ||
11712 | --- | |
11713 | ||
11714 | Hash table lookup is handled the same in version 1 and 2: | |
11715 | ||
11716 | We assume that N and M will not exceed 2^32 - 1. | |
11717 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11718 | ||
d2415c6c DE |
11719 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11720 | in the hash table is located as follows: | |
80626a55 | 11721 | |
d2415c6c DE |
11722 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11723 | the low-order k bits all set to 1. | |
80626a55 | 11724 | |
d2415c6c | 11725 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11726 | |
d2415c6c DE |
11727 | 3) If the hash table entry at index H matches the signature, use that |
11728 | entry. If the hash table entry at index H is unused (all zeroes), | |
11729 | terminate the search: the signature is not present in the table. | |
80626a55 | 11730 | |
d2415c6c | 11731 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11732 | |
d2415c6c | 11733 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11734 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11735 | |
11736 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11737 | .debug_{info,types}.dwo in DWP_FILE. | |
11738 | Returns NULL if there isn't one. | |
11739 | Note: This function processes DWP files only, not DWO files. */ | |
11740 | ||
11741 | static struct dwp_hash_table * | |
ed2dc618 SM |
11742 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11743 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11744 | { |
11745 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11746 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11747 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11748 | struct dwarf2_section_info *index; |
73869dc2 | 11749 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11750 | struct dwp_hash_table *htab; |
11751 | ||
11752 | if (is_debug_types) | |
11753 | index = &dwp_file->sections.tu_index; | |
11754 | else | |
11755 | index = &dwp_file->sections.cu_index; | |
11756 | ||
96b79293 | 11757 | if (index->empty ()) |
80626a55 | 11758 | return NULL; |
96b79293 | 11759 | index->read (objfile); |
80626a55 DE |
11760 | |
11761 | index_ptr = index->buffer; | |
11762 | index_end = index_ptr + index->size; | |
11763 | ||
11764 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11765 | index_ptr += 4; |
11766 | if (version == 2) | |
11767 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11768 | else | |
11769 | nr_columns = 0; | |
11770 | index_ptr += 4; | |
80626a55 DE |
11771 | nr_units = read_4_bytes (dbfd, index_ptr); |
11772 | index_ptr += 4; | |
11773 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11774 | index_ptr += 4; | |
11775 | ||
73869dc2 | 11776 | if (version != 1 && version != 2) |
80626a55 | 11777 | { |
21aa081e | 11778 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11779 | " [in module %s]"), |
21aa081e | 11780 | pulongest (version), dwp_file->name); |
80626a55 DE |
11781 | } |
11782 | if (nr_slots != (nr_slots & -nr_slots)) | |
11783 | { | |
21aa081e | 11784 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11785 | " is not power of 2 [in module %s]"), |
21aa081e | 11786 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11787 | } |
11788 | ||
11789 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11790 | htab->version = version; |
11791 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11792 | htab->nr_units = nr_units; |
11793 | htab->nr_slots = nr_slots; | |
11794 | htab->hash_table = index_ptr; | |
11795 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11796 | |
11797 | /* Exit early if the table is empty. */ | |
11798 | if (nr_slots == 0 || nr_units == 0 | |
11799 | || (version == 2 && nr_columns == 0)) | |
11800 | { | |
11801 | /* All must be zero. */ | |
11802 | if (nr_slots != 0 || nr_units != 0 | |
11803 | || (version == 2 && nr_columns != 0)) | |
11804 | { | |
b98664d3 | 11805 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11806 | " all zero [in modules %s]"), |
11807 | dwp_file->name); | |
11808 | } | |
11809 | return htab; | |
11810 | } | |
11811 | ||
11812 | if (version == 1) | |
11813 | { | |
11814 | htab->section_pool.v1.indices = | |
11815 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11816 | /* It's harder to decide whether the section is too small in v1. | |
11817 | V1 is deprecated anyway so we punt. */ | |
11818 | } | |
11819 | else | |
11820 | { | |
11821 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11822 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11823 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11824 | /* Reverse map for error checking. */ |
11825 | int ids_seen[DW_SECT_MAX + 1]; | |
11826 | int i; | |
11827 | ||
11828 | if (nr_columns < 2) | |
11829 | { | |
11830 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11831 | " in section table [in module %s]"), | |
11832 | dwp_file->name); | |
11833 | } | |
11834 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11835 | { | |
11836 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11837 | " in section table [in module %s]"), | |
11838 | dwp_file->name); | |
11839 | } | |
04fd5eed GB |
11840 | memset (ids, 255, sizeof_ids); |
11841 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11842 | for (i = 0; i < nr_columns; ++i) |
11843 | { | |
11844 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11845 | ||
11846 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11847 | { | |
11848 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11849 | " in section table [in module %s]"), | |
11850 | id, dwp_file->name); | |
11851 | } | |
11852 | if (ids_seen[id] != -1) | |
11853 | { | |
11854 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11855 | " id %d in section table [in module %s]"), | |
11856 | id, dwp_file->name); | |
11857 | } | |
11858 | ids_seen[id] = i; | |
11859 | ids[i] = id; | |
11860 | } | |
11861 | /* Must have exactly one info or types section. */ | |
11862 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11863 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11864 | != 1) | |
11865 | { | |
11866 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11867 | " DWO info/types section [in module %s]"), | |
11868 | dwp_file->name); | |
11869 | } | |
11870 | /* Must have an abbrev section. */ | |
11871 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11872 | { | |
11873 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11874 | " section [in module %s]"), | |
11875 | dwp_file->name); | |
11876 | } | |
11877 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11878 | htab->section_pool.v2.sizes = | |
11879 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11880 | * nr_units * nr_columns); | |
11881 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11882 | * nr_units * nr_columns)) | |
11883 | > index_end) | |
11884 | { | |
11885 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11886 | " [in module %s]"), | |
11887 | dwp_file->name); | |
11888 | } | |
11889 | } | |
80626a55 DE |
11890 | |
11891 | return htab; | |
11892 | } | |
11893 | ||
11894 | /* Update SECTIONS with the data from SECTP. | |
11895 | ||
11896 | This function is like the other "locate" section routines that are | |
11897 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11898 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11899 | |
11900 | The result is non-zero for success, or zero if an error was found. */ | |
11901 | ||
11902 | static int | |
73869dc2 DE |
11903 | locate_v1_virtual_dwo_sections (asection *sectp, |
11904 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11905 | { |
11906 | const struct dwop_section_names *names = &dwop_section_names; | |
11907 | ||
11908 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11909 | { | |
11910 | /* There can be only one. */ | |
049412e3 | 11911 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11912 | return 0; |
049412e3 | 11913 | sections->abbrev.s.section = sectp; |
fd361982 | 11914 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11915 | } |
11916 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11917 | || section_is_p (sectp->name, &names->types_dwo)) | |
11918 | { | |
11919 | /* There can be only one. */ | |
049412e3 | 11920 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11921 | return 0; |
049412e3 | 11922 | sections->info_or_types.s.section = sectp; |
fd361982 | 11923 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11924 | } |
11925 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11926 | { | |
11927 | /* There can be only one. */ | |
049412e3 | 11928 | if (sections->line.s.section != NULL) |
80626a55 | 11929 | return 0; |
049412e3 | 11930 | sections->line.s.section = sectp; |
fd361982 | 11931 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11932 | } |
11933 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11934 | { | |
11935 | /* There can be only one. */ | |
049412e3 | 11936 | if (sections->loc.s.section != NULL) |
80626a55 | 11937 | return 0; |
049412e3 | 11938 | sections->loc.s.section = sectp; |
fd361982 | 11939 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11940 | } |
11941 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11942 | { | |
11943 | /* There can be only one. */ | |
049412e3 | 11944 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11945 | return 0; |
049412e3 | 11946 | sections->macinfo.s.section = sectp; |
fd361982 | 11947 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11948 | } |
11949 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11950 | { | |
11951 | /* There can be only one. */ | |
049412e3 | 11952 | if (sections->macro.s.section != NULL) |
80626a55 | 11953 | return 0; |
049412e3 | 11954 | sections->macro.s.section = sectp; |
fd361982 | 11955 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11956 | } |
11957 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11958 | { | |
11959 | /* There can be only one. */ | |
049412e3 | 11960 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11961 | return 0; |
049412e3 | 11962 | sections->str_offsets.s.section = sectp; |
fd361982 | 11963 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11964 | } |
11965 | else | |
11966 | { | |
11967 | /* No other kind of section is valid. */ | |
11968 | return 0; | |
11969 | } | |
11970 | ||
11971 | return 1; | |
11972 | } | |
11973 | ||
73869dc2 DE |
11974 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11975 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11976 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11977 | This is for DWP version 1 files. */ | |
80626a55 DE |
11978 | |
11979 | static struct dwo_unit * | |
ed2dc618 SM |
11980 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11981 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11982 | uint32_t unit_index, |
11983 | const char *comp_dir, | |
11984 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
11985 | { |
11986 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
11987 | const struct dwp_hash_table *dwp_htab = |
11988 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11989 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11990 | const char *kind = is_debug_types ? "TU" : "CU"; |
11991 | struct dwo_file *dwo_file; | |
11992 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11993 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11994 | void **dwo_file_slot; |
80626a55 DE |
11995 | int i; |
11996 | ||
73869dc2 DE |
11997 | gdb_assert (dwp_file->version == 1); |
11998 | ||
b4f54984 | 11999 | if (dwarf_read_debug) |
80626a55 | 12000 | { |
73869dc2 | 12001 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12002 | kind, |
73869dc2 | 12003 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12004 | dwp_file->name); |
12005 | } | |
12006 | ||
19ac8c2e | 12007 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12008 | Put a limit on the number of sections we look for so that bad data |
12009 | doesn't cause us to loop forever. */ | |
12010 | ||
73869dc2 | 12011 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12012 | (1 /* .debug_info or .debug_types */ \ |
12013 | + 1 /* .debug_abbrev */ \ | |
12014 | + 1 /* .debug_line */ \ | |
12015 | + 1 /* .debug_loc */ \ | |
12016 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12017 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12018 | + 1 /* trailing zero */) |
12019 | ||
12020 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12021 | |
73869dc2 | 12022 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12023 | { |
12024 | asection *sectp; | |
12025 | uint32_t section_nr = | |
12026 | read_4_bytes (dbfd, | |
73869dc2 DE |
12027 | dwp_htab->section_pool.v1.indices |
12028 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12029 | |
12030 | if (section_nr == 0) | |
12031 | break; | |
12032 | if (section_nr >= dwp_file->num_sections) | |
12033 | { | |
12034 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12035 | " [in module %s]"), | |
12036 | dwp_file->name); | |
12037 | } | |
12038 | ||
12039 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12040 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12041 | { |
12042 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12043 | " [in module %s]"), | |
12044 | dwp_file->name); | |
12045 | } | |
12046 | } | |
12047 | ||
12048 | if (i < 2 | |
96b79293 TT |
12049 | || sections.info_or_types.empty () |
12050 | || sections.abbrev.empty ()) | |
80626a55 DE |
12051 | { |
12052 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12053 | " [in module %s]"), | |
12054 | dwp_file->name); | |
12055 | } | |
73869dc2 | 12056 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12057 | { |
12058 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12059 | " [in module %s]"), | |
12060 | dwp_file->name); | |
12061 | } | |
12062 | ||
12063 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12064 | have dwo_unit "live" in that. At least for now. | |
12065 | ||
12066 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12067 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12068 | file, we can combine them back into a virtual DWO file to save space |
12069 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12070 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12071 | ||
791afaa2 TT |
12072 | std::string virtual_dwo_name = |
12073 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12074 | sections.abbrev.get_id (), |
12075 | sections.line.get_id (), | |
12076 | sections.loc.get_id (), | |
12077 | sections.str_offsets.get_id ()); | |
80626a55 | 12078 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12079 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12080 | virtual_dwo_name.c_str (), | |
12081 | comp_dir); | |
80626a55 DE |
12082 | /* Create one if necessary. */ |
12083 | if (*dwo_file_slot == NULL) | |
12084 | { | |
b4f54984 | 12085 | if (dwarf_read_debug) |
80626a55 DE |
12086 | { |
12087 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12088 | virtual_dwo_name.c_str ()); |
80626a55 | 12089 | } |
51ac9db5 | 12090 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12091 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12092 | virtual_dwo_name); | |
0ac5b59e | 12093 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12094 | dwo_file->sections.abbrev = sections.abbrev; |
12095 | dwo_file->sections.line = sections.line; | |
12096 | dwo_file->sections.loc = sections.loc; | |
12097 | dwo_file->sections.macinfo = sections.macinfo; | |
12098 | dwo_file->sections.macro = sections.macro; | |
12099 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12100 | /* The "str" section is global to the entire DWP file. */ | |
12101 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12102 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12103 | there's no need to record it in dwo_file. |
12104 | Also, we can't simply record type sections in dwo_file because | |
12105 | we record a pointer into the vector in dwo_unit. As we collect more | |
12106 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12107 | for it, invalidating all copies of pointers into the previous |
12108 | contents. */ | |
80626a55 DE |
12109 | *dwo_file_slot = dwo_file; |
12110 | } | |
12111 | else | |
12112 | { | |
b4f54984 | 12113 | if (dwarf_read_debug) |
80626a55 DE |
12114 | { |
12115 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12116 | virtual_dwo_name.c_str ()); |
80626a55 | 12117 | } |
9a3c8263 | 12118 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12119 | } |
80626a55 DE |
12120 | |
12121 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12122 | dwo_unit->dwo_file = dwo_file; | |
12123 | dwo_unit->signature = signature; | |
8d749320 SM |
12124 | dwo_unit->section = |
12125 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12126 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12127 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12128 | |
12129 | return dwo_unit; | |
12130 | } | |
12131 | ||
73869dc2 DE |
12132 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12133 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12134 | piece within that section used by a TU/CU, return a virtual section | |
12135 | of just that piece. */ | |
12136 | ||
12137 | static struct dwarf2_section_info | |
ed2dc618 SM |
12138 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12139 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12140 | bfd_size_type offset, bfd_size_type size) |
12141 | { | |
12142 | struct dwarf2_section_info result; | |
12143 | asection *sectp; | |
12144 | ||
12145 | gdb_assert (section != NULL); | |
12146 | gdb_assert (!section->is_virtual); | |
12147 | ||
12148 | memset (&result, 0, sizeof (result)); | |
12149 | result.s.containing_section = section; | |
dc4ccb6f | 12150 | result.is_virtual = true; |
73869dc2 DE |
12151 | |
12152 | if (size == 0) | |
12153 | return result; | |
12154 | ||
96b79293 | 12155 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12156 | |
12157 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12158 | bounds of the real section. This is a pretty-rare event, so just | |
12159 | flag an error (easier) instead of a warning and trying to cope. */ | |
12160 | if (sectp == NULL | |
fd361982 | 12161 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12162 | { |
73869dc2 DE |
12163 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12164 | " in section %s [in module %s]"), | |
fd361982 | 12165 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
12166 | objfile_name (dwarf2_per_objfile->objfile)); |
12167 | } | |
12168 | ||
12169 | result.virtual_offset = offset; | |
12170 | result.size = size; | |
12171 | return result; | |
12172 | } | |
12173 | ||
12174 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12175 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12176 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12177 | This is for DWP version 2 files. */ | |
12178 | ||
12179 | static struct dwo_unit * | |
ed2dc618 SM |
12180 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12181 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12182 | uint32_t unit_index, |
12183 | const char *comp_dir, | |
12184 | ULONGEST signature, int is_debug_types) | |
12185 | { | |
12186 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12187 | const struct dwp_hash_table *dwp_htab = | |
12188 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12189 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12190 | const char *kind = is_debug_types ? "TU" : "CU"; |
12191 | struct dwo_file *dwo_file; | |
12192 | struct dwo_unit *dwo_unit; | |
12193 | struct virtual_v2_dwo_sections sections; | |
12194 | void **dwo_file_slot; | |
73869dc2 DE |
12195 | int i; |
12196 | ||
12197 | gdb_assert (dwp_file->version == 2); | |
12198 | ||
b4f54984 | 12199 | if (dwarf_read_debug) |
73869dc2 DE |
12200 | { |
12201 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12202 | kind, | |
12203 | pulongest (unit_index), hex_string (signature), | |
12204 | dwp_file->name); | |
12205 | } | |
12206 | ||
12207 | /* Fetch the section offsets of this DWO unit. */ | |
12208 | ||
12209 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12210 | |
12211 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12212 | { | |
12213 | uint32_t offset = read_4_bytes (dbfd, | |
12214 | dwp_htab->section_pool.v2.offsets | |
12215 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12216 | + i) | |
12217 | * sizeof (uint32_t))); | |
12218 | uint32_t size = read_4_bytes (dbfd, | |
12219 | dwp_htab->section_pool.v2.sizes | |
12220 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12221 | + i) | |
12222 | * sizeof (uint32_t))); | |
12223 | ||
12224 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12225 | { | |
12226 | case DW_SECT_INFO: | |
12227 | case DW_SECT_TYPES: | |
12228 | sections.info_or_types_offset = offset; | |
12229 | sections.info_or_types_size = size; | |
12230 | break; | |
12231 | case DW_SECT_ABBREV: | |
12232 | sections.abbrev_offset = offset; | |
12233 | sections.abbrev_size = size; | |
12234 | break; | |
12235 | case DW_SECT_LINE: | |
12236 | sections.line_offset = offset; | |
12237 | sections.line_size = size; | |
12238 | break; | |
12239 | case DW_SECT_LOC: | |
12240 | sections.loc_offset = offset; | |
12241 | sections.loc_size = size; | |
12242 | break; | |
12243 | case DW_SECT_STR_OFFSETS: | |
12244 | sections.str_offsets_offset = offset; | |
12245 | sections.str_offsets_size = size; | |
12246 | break; | |
12247 | case DW_SECT_MACINFO: | |
12248 | sections.macinfo_offset = offset; | |
12249 | sections.macinfo_size = size; | |
12250 | break; | |
12251 | case DW_SECT_MACRO: | |
12252 | sections.macro_offset = offset; | |
12253 | sections.macro_size = size; | |
12254 | break; | |
12255 | } | |
12256 | } | |
12257 | ||
12258 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12259 | have dwo_unit "live" in that. At least for now. | |
12260 | ||
12261 | The DWP file can be made up of a random collection of CUs and TUs. | |
12262 | However, for each CU + set of TUs that came from the same original DWO | |
12263 | file, we can combine them back into a virtual DWO file to save space | |
12264 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12265 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12266 | ||
791afaa2 TT |
12267 | std::string virtual_dwo_name = |
12268 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12269 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12270 | (long) (sections.line_size ? sections.line_offset : 0), | |
12271 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12272 | (long) (sections.str_offsets_size | |
12273 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12274 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12275 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12276 | virtual_dwo_name.c_str (), | |
12277 | comp_dir); | |
73869dc2 DE |
12278 | /* Create one if necessary. */ |
12279 | if (*dwo_file_slot == NULL) | |
12280 | { | |
b4f54984 | 12281 | if (dwarf_read_debug) |
73869dc2 DE |
12282 | { |
12283 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12284 | virtual_dwo_name.c_str ()); |
73869dc2 | 12285 | } |
51ac9db5 | 12286 | dwo_file = new struct dwo_file; |
efba19b0 TT |
12287 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
12288 | virtual_dwo_name); | |
73869dc2 DE |
12289 | dwo_file->comp_dir = comp_dir; |
12290 | dwo_file->sections.abbrev = | |
ed2dc618 | 12291 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12292 | sections.abbrev_offset, sections.abbrev_size); |
12293 | dwo_file->sections.line = | |
ed2dc618 | 12294 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12295 | sections.line_offset, sections.line_size); |
12296 | dwo_file->sections.loc = | |
ed2dc618 | 12297 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12298 | sections.loc_offset, sections.loc_size); |
12299 | dwo_file->sections.macinfo = | |
ed2dc618 | 12300 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12301 | sections.macinfo_offset, sections.macinfo_size); |
12302 | dwo_file->sections.macro = | |
ed2dc618 | 12303 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12304 | sections.macro_offset, sections.macro_size); |
12305 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12306 | create_dwp_v2_section (dwarf2_per_objfile, |
12307 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12308 | sections.str_offsets_offset, |
12309 | sections.str_offsets_size); | |
12310 | /* The "str" section is global to the entire DWP file. */ | |
12311 | dwo_file->sections.str = dwp_file->sections.str; | |
12312 | /* The info or types section is assigned below to dwo_unit, | |
12313 | there's no need to record it in dwo_file. | |
12314 | Also, we can't simply record type sections in dwo_file because | |
12315 | we record a pointer into the vector in dwo_unit. As we collect more | |
12316 | types we'll grow the vector and eventually have to reallocate space | |
12317 | for it, invalidating all copies of pointers into the previous | |
12318 | contents. */ | |
12319 | *dwo_file_slot = dwo_file; | |
12320 | } | |
12321 | else | |
12322 | { | |
b4f54984 | 12323 | if (dwarf_read_debug) |
73869dc2 DE |
12324 | { |
12325 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12326 | virtual_dwo_name.c_str ()); |
73869dc2 | 12327 | } |
9a3c8263 | 12328 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12329 | } |
73869dc2 DE |
12330 | |
12331 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12332 | dwo_unit->dwo_file = dwo_file; | |
12333 | dwo_unit->signature = signature; | |
8d749320 SM |
12334 | dwo_unit->section = |
12335 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12336 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12337 | is_debug_types | |
73869dc2 DE |
12338 | ? &dwp_file->sections.types |
12339 | : &dwp_file->sections.info, | |
12340 | sections.info_or_types_offset, | |
12341 | sections.info_or_types_size); | |
12342 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12343 | ||
12344 | return dwo_unit; | |
12345 | } | |
12346 | ||
57d63ce2 DE |
12347 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12348 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12349 | |
12350 | static struct dwo_unit * | |
ed2dc618 SM |
12351 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12352 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12353 | ULONGEST signature, int is_debug_types) |
80626a55 | 12354 | { |
57d63ce2 DE |
12355 | const struct dwp_hash_table *dwp_htab = |
12356 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12357 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12358 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12359 | uint32_t hash = signature & mask; |
12360 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12361 | unsigned int i; | |
12362 | void **slot; | |
870f88f7 | 12363 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12364 | |
12365 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12366 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12367 | slot = htab_find_slot (is_debug_types |
12368 | ? dwp_file->loaded_tus | |
12369 | : dwp_file->loaded_cus, | |
12370 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12371 | |
12372 | if (*slot != NULL) | |
9a3c8263 | 12373 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12374 | |
12375 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12376 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12377 | { |
12378 | ULONGEST signature_in_table; | |
12379 | ||
12380 | signature_in_table = | |
57d63ce2 | 12381 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12382 | if (signature_in_table == signature) |
12383 | { | |
57d63ce2 DE |
12384 | uint32_t unit_index = |
12385 | read_4_bytes (dbfd, | |
12386 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12387 | |
73869dc2 DE |
12388 | if (dwp_file->version == 1) |
12389 | { | |
ed2dc618 SM |
12390 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12391 | dwp_file, unit_index, | |
73869dc2 DE |
12392 | comp_dir, signature, |
12393 | is_debug_types); | |
12394 | } | |
12395 | else | |
12396 | { | |
ed2dc618 SM |
12397 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12398 | dwp_file, unit_index, | |
73869dc2 DE |
12399 | comp_dir, signature, |
12400 | is_debug_types); | |
12401 | } | |
9a3c8263 | 12402 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12403 | } |
12404 | if (signature_in_table == 0) | |
12405 | return NULL; | |
12406 | hash = (hash + hash2) & mask; | |
12407 | } | |
12408 | ||
12409 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12410 | " [in module %s]"), | |
12411 | dwp_file->name); | |
12412 | } | |
12413 | ||
ab5088bf | 12414 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12415 | Open the file specified by FILE_NAME and hand it off to BFD for |
12416 | preliminary analysis. Return a newly initialized bfd *, which | |
12417 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12418 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12419 | SEARCH_CWD is true if the current directory is to be searched. |
12420 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12421 | If successful, the file is added to the bfd include table of the |
12422 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12423 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12424 | NOTE: This function is derived from symfile_bfd_open. */ |
12425 | ||
192b62ce | 12426 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12427 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12428 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12429 | { |
24b9144d | 12430 | int desc; |
9c02c129 DE |
12431 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12432 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12433 | to debug_file_directory. */ | |
e0cc99a6 | 12434 | const char *search_path; |
9c02c129 DE |
12435 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12436 | ||
e0cc99a6 | 12437 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12438 | if (search_cwd) |
12439 | { | |
12440 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12441 | { |
12442 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12443 | debug_file_directory, | |
12444 | (char *) NULL)); | |
12445 | search_path = search_path_holder.get (); | |
12446 | } | |
6ac97d4c | 12447 | else |
e0cc99a6 | 12448 | search_path = "."; |
6ac97d4c | 12449 | } |
9c02c129 | 12450 | else |
e0cc99a6 | 12451 | search_path = debug_file_directory; |
3019eac3 | 12452 | |
24b9144d | 12453 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12454 | if (is_dwp) |
12455 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12456 | |
12457 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12458 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12459 | O_RDONLY | O_BINARY, &absolute_name); |
12460 | if (desc < 0) | |
12461 | return NULL; | |
12462 | ||
e0cc99a6 TT |
12463 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12464 | gnutarget, desc)); | |
9c02c129 DE |
12465 | if (sym_bfd == NULL) |
12466 | return NULL; | |
192b62ce | 12467 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12468 | |
192b62ce TT |
12469 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12470 | return NULL; | |
3019eac3 | 12471 | |
13aaf454 DE |
12472 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12473 | This is important because things like demangled_names_hash lives in the | |
12474 | objfile's per_bfd space and may have references to things like symbol | |
12475 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12476 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12477 | |
3019eac3 DE |
12478 | return sym_bfd; |
12479 | } | |
12480 | ||
ab5088bf | 12481 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12482 | COMP_DIR is the DW_AT_comp_dir attribute. |
12483 | The result is the bfd handle of the file. | |
12484 | If there is a problem finding or opening the file, return NULL. | |
12485 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12486 | same as symfile_bfd_open. */ | |
12487 | ||
192b62ce | 12488 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12489 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12490 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12491 | { |
80626a55 | 12492 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12493 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12494 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12495 | |
12496 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12497 | ||
12498 | if (comp_dir != NULL) | |
12499 | { | |
43816ebc TT |
12500 | gdb::unique_xmalloc_ptr<char> path_to_try |
12501 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12502 | |
12503 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12504 | search path, which seems useful. */ | |
ed2dc618 | 12505 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12506 | path_to_try.get (), |
ed2dc618 | 12507 | 0 /*is_dwp*/, |
192b62ce | 12508 | 1 /*search_cwd*/)); |
3019eac3 DE |
12509 | if (abfd != NULL) |
12510 | return abfd; | |
12511 | } | |
12512 | ||
12513 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12514 | is a list of paths. */ | |
12515 | ||
12516 | if (*debug_file_directory == '\0') | |
12517 | return NULL; | |
12518 | ||
ed2dc618 SM |
12519 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12520 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12521 | } |
12522 | ||
80626a55 DE |
12523 | /* This function is mapped across the sections and remembers the offset and |
12524 | size of each of the DWO debugging sections we are interested in. */ | |
12525 | ||
12526 | static void | |
12527 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12528 | { | |
9a3c8263 | 12529 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12530 | const struct dwop_section_names *names = &dwop_section_names; |
12531 | ||
12532 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12533 | { | |
049412e3 | 12534 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12535 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12536 | } |
12537 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12538 | { | |
049412e3 | 12539 | dwo_sections->info.s.section = sectp; |
fd361982 | 12540 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12541 | } |
12542 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12543 | { | |
049412e3 | 12544 | dwo_sections->line.s.section = sectp; |
fd361982 | 12545 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12546 | } |
12547 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12548 | { | |
049412e3 | 12549 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12550 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12551 | } |
12552 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12553 | { | |
049412e3 | 12554 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12555 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12556 | } |
12557 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12558 | { | |
049412e3 | 12559 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12560 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12561 | } |
12562 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12563 | { | |
049412e3 | 12564 | dwo_sections->str.s.section = sectp; |
fd361982 | 12565 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12566 | } |
12567 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12568 | { | |
049412e3 | 12569 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12570 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12571 | } |
12572 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12573 | { | |
12574 | struct dwarf2_section_info type_section; | |
12575 | ||
12576 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12577 | type_section.s.section = sectp; |
fd361982 | 12578 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12579 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12580 | } |
12581 | } | |
12582 | ||
ab5088bf | 12583 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12584 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12585 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12586 | |
12587 | static struct dwo_file * | |
0ac5b59e DE |
12588 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12589 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12590 | { |
ed2dc618 | 12591 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12592 | |
fb1eb2f9 | 12593 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12594 | if (dbfd == NULL) |
12595 | { | |
b4f54984 | 12596 | if (dwarf_read_debug) |
80626a55 DE |
12597 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12598 | return NULL; | |
12599 | } | |
263db9a1 | 12600 | |
51ac9db5 | 12601 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12602 | dwo_file->dwo_name = dwo_name; |
12603 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12604 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12605 | |
fb1eb2f9 | 12606 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12607 | &dwo_file->sections); |
3019eac3 | 12608 | |
18a8505e AT |
12609 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12610 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12611 | |
263db9a1 | 12612 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12613 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12614 | |
b4f54984 | 12615 | if (dwarf_read_debug) |
80626a55 DE |
12616 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12617 | ||
263db9a1 | 12618 | return dwo_file.release (); |
3019eac3 DE |
12619 | } |
12620 | ||
80626a55 | 12621 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12622 | size of each of the DWP debugging sections common to version 1 and 2 that |
12623 | we are interested in. */ | |
3019eac3 | 12624 | |
80626a55 | 12625 | static void |
73869dc2 DE |
12626 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12627 | void *dwp_file_ptr) | |
3019eac3 | 12628 | { |
9a3c8263 | 12629 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12630 | const struct dwop_section_names *names = &dwop_section_names; |
12631 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12632 | |
80626a55 | 12633 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12634 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12635 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12636 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12637 | |
80626a55 DE |
12638 | /* Look for specific sections that we need. */ |
12639 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12640 | { | |
049412e3 | 12641 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12642 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12643 | } |
12644 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12645 | { | |
049412e3 | 12646 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12647 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12648 | } |
12649 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12650 | { | |
049412e3 | 12651 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12652 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12653 | } |
12654 | } | |
3019eac3 | 12655 | |
73869dc2 DE |
12656 | /* This function is mapped across the sections and remembers the offset and |
12657 | size of each of the DWP version 2 debugging sections that we are interested | |
12658 | in. This is split into a separate function because we don't know if we | |
12659 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12660 | ||
12661 | static void | |
12662 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12663 | { | |
9a3c8263 | 12664 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12665 | const struct dwop_section_names *names = &dwop_section_names; |
12666 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12667 | ||
12668 | /* Record the ELF section number for later lookup: this is what the | |
12669 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12670 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12671 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12672 | ||
12673 | /* Look for specific sections that we need. */ | |
12674 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12675 | { | |
049412e3 | 12676 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12677 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12678 | } |
12679 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12680 | { | |
049412e3 | 12681 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12682 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12683 | } |
12684 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12685 | { | |
049412e3 | 12686 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12687 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12688 | } |
12689 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12690 | { | |
049412e3 | 12691 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12692 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12693 | } |
12694 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12695 | { | |
049412e3 | 12696 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12697 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12698 | } |
12699 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12700 | { | |
049412e3 | 12701 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12702 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12703 | } |
12704 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12705 | { | |
049412e3 | 12706 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12707 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12708 | } |
12709 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12710 | { | |
049412e3 | 12711 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12712 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12713 | } |
12714 | } | |
12715 | ||
80626a55 | 12716 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12717 | |
80626a55 DE |
12718 | static hashval_t |
12719 | hash_dwp_loaded_cutus (const void *item) | |
12720 | { | |
9a3c8263 | 12721 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12722 | |
80626a55 DE |
12723 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12724 | return dwo_unit->signature; | |
3019eac3 DE |
12725 | } |
12726 | ||
80626a55 | 12727 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12728 | |
80626a55 DE |
12729 | static int |
12730 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12731 | { |
9a3c8263 SM |
12732 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12733 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12734 | |
80626a55 DE |
12735 | return dua->signature == dub->signature; |
12736 | } | |
3019eac3 | 12737 | |
80626a55 | 12738 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12739 | |
80626a55 DE |
12740 | static htab_t |
12741 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
12742 | { | |
12743 | return htab_create_alloc_ex (3, | |
12744 | hash_dwp_loaded_cutus, | |
12745 | eq_dwp_loaded_cutus, | |
12746 | NULL, | |
12747 | &objfile->objfile_obstack, | |
12748 | hashtab_obstack_allocate, | |
12749 | dummy_obstack_deallocate); | |
12750 | } | |
3019eac3 | 12751 | |
ab5088bf DE |
12752 | /* Try to open DWP file FILE_NAME. |
12753 | The result is the bfd handle of the file. | |
12754 | If there is a problem finding or opening the file, return NULL. | |
12755 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12756 | same as symfile_bfd_open. */ | |
12757 | ||
192b62ce | 12758 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12759 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12760 | const char *file_name) | |
ab5088bf | 12761 | { |
ed2dc618 SM |
12762 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12763 | 1 /*is_dwp*/, | |
192b62ce | 12764 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12765 | if (abfd != NULL) |
12766 | return abfd; | |
12767 | ||
12768 | /* Work around upstream bug 15652. | |
12769 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12770 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12771 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12772 | of the executable's path may have discarded the needed info. | |
12773 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12774 | .gnu_debuglink, but that doesn't exist yet.] | |
12775 | Strip the directory from FILE_NAME and search again. */ | |
12776 | if (*debug_file_directory != '\0') | |
12777 | { | |
12778 | /* Don't implicitly search the current directory here. | |
12779 | If the user wants to search "." to handle this case, | |
12780 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12781 | return try_open_dwop_file (dwarf2_per_objfile, |
12782 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12783 | 0 /*search_cwd*/); |
12784 | } | |
12785 | ||
12786 | return NULL; | |
ab5088bf DE |
12787 | } |
12788 | ||
80626a55 DE |
12789 | /* Initialize the use of the DWP file for the current objfile. |
12790 | By convention the name of the DWP file is ${objfile}.dwp. | |
12791 | The result is NULL if it can't be found. */ | |
a766d390 | 12792 | |
400174b1 | 12793 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12794 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12795 | { |
12796 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12797 | |
82bf32bc JK |
12798 | /* Try to find first .dwp for the binary file before any symbolic links |
12799 | resolving. */ | |
6c447423 DE |
12800 | |
12801 | /* If the objfile is a debug file, find the name of the real binary | |
12802 | file and get the name of dwp file from there. */ | |
d721ba37 | 12803 | std::string dwp_name; |
6c447423 DE |
12804 | if (objfile->separate_debug_objfile_backlink != NULL) |
12805 | { | |
12806 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12807 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12808 | |
d721ba37 | 12809 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12810 | } |
12811 | else | |
d721ba37 PA |
12812 | dwp_name = objfile->original_name; |
12813 | ||
12814 | dwp_name += ".dwp"; | |
80626a55 | 12815 | |
ed2dc618 | 12816 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12817 | if (dbfd == NULL |
12818 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12819 | { | |
12820 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12821 | dwp_name = objfile_name (objfile); |
12822 | dwp_name += ".dwp"; | |
ed2dc618 | 12823 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12824 | } |
12825 | ||
80626a55 DE |
12826 | if (dbfd == NULL) |
12827 | { | |
b4f54984 | 12828 | if (dwarf_read_debug) |
d721ba37 | 12829 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12830 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12831 | } |
400174b1 TT |
12832 | |
12833 | const char *name = bfd_get_filename (dbfd.get ()); | |
12834 | std::unique_ptr<struct dwp_file> dwp_file | |
12835 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12836 | |
0a0f4c01 | 12837 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12838 | dwp_file->elf_sections = |
12839 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12840 | dwp_file->num_sections, asection *); | |
12841 | ||
400174b1 TT |
12842 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12843 | dwarf2_locate_common_dwp_sections, | |
12844 | dwp_file.get ()); | |
80626a55 | 12845 | |
400174b1 TT |
12846 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12847 | 0); | |
80626a55 | 12848 | |
400174b1 TT |
12849 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12850 | 1); | |
80626a55 | 12851 | |
73869dc2 | 12852 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12853 | if (dwp_file->cus && dwp_file->tus |
12854 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12855 | { |
12856 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12857 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12858 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12859 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12860 | " TU version %s [in DWP file %s]"), | |
12861 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12862 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12863 | } |
08302ed2 DE |
12864 | |
12865 | if (dwp_file->cus) | |
12866 | dwp_file->version = dwp_file->cus->version; | |
12867 | else if (dwp_file->tus) | |
12868 | dwp_file->version = dwp_file->tus->version; | |
12869 | else | |
12870 | dwp_file->version = 2; | |
73869dc2 DE |
12871 | |
12872 | if (dwp_file->version == 2) | |
400174b1 TT |
12873 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12874 | dwarf2_locate_v2_dwp_sections, | |
12875 | dwp_file.get ()); | |
73869dc2 | 12876 | |
19ac8c2e DE |
12877 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
12878 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 12879 | |
b4f54984 | 12880 | if (dwarf_read_debug) |
80626a55 DE |
12881 | { |
12882 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12883 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12884 | " %s CUs, %s TUs\n", |
12885 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12886 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12887 | } |
12888 | ||
12889 | return dwp_file; | |
3019eac3 | 12890 | } |
c906108c | 12891 | |
ab5088bf DE |
12892 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12893 | ||
12894 | static struct dwp_file * | |
ed2dc618 | 12895 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12896 | { |
12897 | if (! dwarf2_per_objfile->dwp_checked) | |
12898 | { | |
ed2dc618 SM |
12899 | dwarf2_per_objfile->dwp_file |
12900 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12901 | dwarf2_per_objfile->dwp_checked = 1; |
12902 | } | |
400174b1 | 12903 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12904 | } |
12905 | ||
80626a55 DE |
12906 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12907 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12908 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12909 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12910 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12911 | ||
12912 | This is called, for example, when wanting to read a variable with a | |
12913 | complex location. Therefore we don't want to do file i/o for every call. | |
12914 | Therefore we don't want to look for a DWO file on every call. | |
12915 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12916 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12917 | for a DWO file. | |
12918 | ||
1c658ad5 | 12919 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12920 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12921 | |
3019eac3 | 12922 | static struct dwo_unit * |
80626a55 DE |
12923 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12924 | const char *dwo_name, const char *comp_dir, | |
12925 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12926 | { |
ed2dc618 | 12927 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12928 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12929 | const char *kind = is_debug_types ? "TU" : "CU"; |
12930 | void **dwo_file_slot; | |
3019eac3 | 12931 | struct dwo_file *dwo_file; |
80626a55 | 12932 | struct dwp_file *dwp_file; |
cb1df416 | 12933 | |
6a506a2d DE |
12934 | /* First see if there's a DWP file. |
12935 | If we have a DWP file but didn't find the DWO inside it, don't | |
12936 | look for the original DWO file. It makes gdb behave differently | |
12937 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12938 | |
ed2dc618 | 12939 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12940 | if (dwp_file != NULL) |
cf2c3c16 | 12941 | { |
80626a55 DE |
12942 | const struct dwp_hash_table *dwp_htab = |
12943 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12944 | ||
12945 | if (dwp_htab != NULL) | |
12946 | { | |
12947 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12948 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12949 | signature, is_debug_types); |
80626a55 DE |
12950 | |
12951 | if (dwo_cutu != NULL) | |
12952 | { | |
b4f54984 | 12953 | if (dwarf_read_debug) |
80626a55 DE |
12954 | { |
12955 | fprintf_unfiltered (gdb_stdlog, | |
12956 | "Virtual DWO %s %s found: @%s\n", | |
12957 | kind, hex_string (signature), | |
12958 | host_address_to_string (dwo_cutu)); | |
12959 | } | |
12960 | return dwo_cutu; | |
12961 | } | |
12962 | } | |
12963 | } | |
6a506a2d | 12964 | else |
80626a55 | 12965 | { |
6a506a2d | 12966 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12967 | |
ed2dc618 SM |
12968 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12969 | dwo_name, comp_dir); | |
6a506a2d | 12970 | if (*dwo_file_slot == NULL) |
80626a55 | 12971 | { |
6a506a2d DE |
12972 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12973 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12974 | } |
6a506a2d | 12975 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12976 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12977 | |
6a506a2d | 12978 | if (dwo_file != NULL) |
19c3d4c9 | 12979 | { |
6a506a2d DE |
12980 | struct dwo_unit *dwo_cutu = NULL; |
12981 | ||
12982 | if (is_debug_types && dwo_file->tus) | |
12983 | { | |
12984 | struct dwo_unit find_dwo_cutu; | |
12985 | ||
12986 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12987 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
12988 | dwo_cutu |
12989 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 12990 | } |
33c5cd75 | 12991 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12992 | { |
33c5cd75 DB |
12993 | struct dwo_unit find_dwo_cutu; |
12994 | ||
12995 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12996 | find_dwo_cutu.signature = signature; | |
12997 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
12998 | &find_dwo_cutu); | |
6a506a2d DE |
12999 | } |
13000 | ||
13001 | if (dwo_cutu != NULL) | |
13002 | { | |
b4f54984 | 13003 | if (dwarf_read_debug) |
6a506a2d DE |
13004 | { |
13005 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13006 | kind, dwo_name, hex_string (signature), | |
13007 | host_address_to_string (dwo_cutu)); | |
13008 | } | |
13009 | return dwo_cutu; | |
80626a55 DE |
13010 | } |
13011 | } | |
2e276125 | 13012 | } |
9cdd5dbd | 13013 | |
80626a55 DE |
13014 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13015 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13016 | correctly to find the file. */ | |
13017 | ||
b4f54984 | 13018 | if (dwarf_read_debug) |
80626a55 DE |
13019 | { |
13020 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13021 | kind, dwo_name, hex_string (signature)); | |
13022 | } | |
3019eac3 | 13023 | |
6656a72d DE |
13024 | /* This is a warning and not a complaint because it can be caused by |
13025 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13026 | { |
13027 | /* Print the name of the DWP file if we looked there, helps the user | |
13028 | better diagnose the problem. */ | |
791afaa2 | 13029 | std::string dwp_text; |
43942612 DE |
13030 | |
13031 | if (dwp_file != NULL) | |
791afaa2 TT |
13032 | dwp_text = string_printf (" [in DWP file %s]", |
13033 | lbasename (dwp_file->name)); | |
43942612 | 13034 | |
9d8780f0 | 13035 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13036 | " [in module %s]"), |
13037 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13038 | dwp_text.c_str (), |
43942612 | 13039 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13040 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13041 | } |
3019eac3 | 13042 | return NULL; |
5fb290d7 DJ |
13043 | } |
13044 | ||
80626a55 DE |
13045 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13046 | See lookup_dwo_cutu_unit for details. */ | |
13047 | ||
13048 | static struct dwo_unit * | |
13049 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13050 | const char *dwo_name, const char *comp_dir, | |
13051 | ULONGEST signature) | |
13052 | { | |
13053 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13054 | } | |
13055 | ||
13056 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13057 | See lookup_dwo_cutu_unit for details. */ | |
13058 | ||
13059 | static struct dwo_unit * | |
13060 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13061 | const char *dwo_name, const char *comp_dir) | |
13062 | { | |
13063 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13064 | } | |
13065 | ||
89e63ee4 DE |
13066 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13067 | ||
13068 | static int | |
13069 | queue_and_load_dwo_tu (void **slot, void *info) | |
13070 | { | |
13071 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13072 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13073 | ULONGEST signature = dwo_unit->signature; | |
13074 | struct signatured_type *sig_type = | |
13075 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13076 | ||
13077 | if (sig_type != NULL) | |
13078 | { | |
13079 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13080 | ||
13081 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13082 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13083 | while processing PER_CU. */ | |
13084 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13085 | load_full_type_unit (sig_cu); | |
ae640021 | 13086 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
13087 | } |
13088 | ||
13089 | return 1; | |
13090 | } | |
13091 | ||
13092 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13093 | The DWO may have the only definition of the type, though it may not be | |
13094 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13095 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13096 | ||
13097 | static void | |
13098 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13099 | { | |
13100 | struct dwo_unit *dwo_unit; | |
13101 | struct dwo_file *dwo_file; | |
13102 | ||
13103 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13104 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13105 | gdb_assert (per_cu->cu != NULL); |
13106 | ||
13107 | dwo_unit = per_cu->cu->dwo_unit; | |
13108 | gdb_assert (dwo_unit != NULL); | |
13109 | ||
13110 | dwo_file = dwo_unit->dwo_file; | |
13111 | if (dwo_file->tus != NULL) | |
13112 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13113 | } | |
13114 | ||
3019eac3 | 13115 | /* Read in various DIEs. */ |
348e048f | 13116 | |
d389af10 | 13117 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13118 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13119 | already referenced by DW_AT_abstract_origin from the children of the | |
13120 | current DIE. */ | |
d389af10 JK |
13121 | |
13122 | static void | |
13123 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13124 | { | |
13125 | struct die_info *child_die; | |
791afaa2 | 13126 | sect_offset *offsetp; |
d389af10 JK |
13127 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13128 | struct die_info *origin_die; | |
13129 | /* Iterator of the ORIGIN_DIE children. */ | |
13130 | struct die_info *origin_child_die; | |
d389af10 | 13131 | struct attribute *attr; |
cd02d79d PA |
13132 | struct dwarf2_cu *origin_cu; |
13133 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13134 | |
13135 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13136 | if (!attr) | |
13137 | return; | |
13138 | ||
cd02d79d PA |
13139 | /* Note that following die references may follow to a die in a |
13140 | different cu. */ | |
13141 | ||
13142 | origin_cu = cu; | |
13143 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13144 | ||
13145 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13146 | symbols in. */ | |
13147 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13148 | origin_cu->list_in_scope = cu->list_in_scope; | |
13149 | ||
edb3359d DJ |
13150 | if (die->tag != origin_die->tag |
13151 | && !(die->tag == DW_TAG_inlined_subroutine | |
13152 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13153 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13154 | sect_offset_str (die->sect_off), |
13155 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13156 | |
791afaa2 | 13157 | std::vector<sect_offset> offsets; |
d389af10 | 13158 | |
3ea89b92 PMR |
13159 | for (child_die = die->child; |
13160 | child_die && child_die->tag; | |
13161 | child_die = sibling_die (child_die)) | |
13162 | { | |
13163 | struct die_info *child_origin_die; | |
13164 | struct dwarf2_cu *child_origin_cu; | |
13165 | ||
13166 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13167 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13168 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13169 | present in the abstract instance but not referenced in the concrete | |
13170 | one. */ | |
216f72a1 JK |
13171 | if (child_die->tag == DW_TAG_call_site |
13172 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13173 | continue; |
13174 | ||
c38f313d DJ |
13175 | /* For each CHILD_DIE, find the corresponding child of |
13176 | ORIGIN_DIE. If there is more than one layer of | |
13177 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13178 | but GCC versions at least through 4.4 generate this (GCC PR | |
13179 | 40573). */ | |
3ea89b92 PMR |
13180 | child_origin_die = child_die; |
13181 | child_origin_cu = cu; | |
c38f313d DJ |
13182 | while (1) |
13183 | { | |
cd02d79d PA |
13184 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13185 | child_origin_cu); | |
c38f313d DJ |
13186 | if (attr == NULL) |
13187 | break; | |
cd02d79d PA |
13188 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13189 | &child_origin_cu); | |
c38f313d DJ |
13190 | } |
13191 | ||
d389af10 JK |
13192 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13193 | counterpart may exist. */ | |
c38f313d | 13194 | if (child_origin_die != child_die) |
d389af10 | 13195 | { |
edb3359d DJ |
13196 | if (child_die->tag != child_origin_die->tag |
13197 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13198 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13199 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13200 | "different tags"), |
9d8780f0 SM |
13201 | sect_offset_str (child_die->sect_off), |
13202 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13203 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13204 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13205 | "different parents"), |
9d8780f0 SM |
13206 | sect_offset_str (child_die->sect_off), |
13207 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13208 | else |
791afaa2 | 13209 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13210 | } |
d389af10 | 13211 | } |
791afaa2 TT |
13212 | std::sort (offsets.begin (), offsets.end ()); |
13213 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13214 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13215 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13216 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13217 | "to DIE %s as their abstract origin"), |
13218 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13219 | |
791afaa2 | 13220 | offsetp = offsets.data (); |
d389af10 JK |
13221 | origin_child_die = origin_die->child; |
13222 | while (origin_child_die && origin_child_die->tag) | |
13223 | { | |
13224 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13225 | while (offsetp < offsets_end |
9c541725 | 13226 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13227 | offsetp++; |
b64f50a1 | 13228 | if (offsetp >= offsets_end |
9c541725 | 13229 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13230 | { |
adde2bff DE |
13231 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13232 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13233 | This can happen with mutually referenced abstract_origins. | |
13234 | PR 16581. */ | |
13235 | if (!origin_child_die->in_process) | |
13236 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13237 | } |
13238 | origin_child_die = sibling_die (origin_child_die); | |
13239 | } | |
cd02d79d | 13240 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13241 | |
13242 | if (cu != origin_cu) | |
13243 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13244 | } |
13245 | ||
c906108c | 13246 | static void |
e7c27a73 | 13247 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13248 | { |
518817b3 | 13249 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13250 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13251 | struct context_stack *newobj; |
c906108c SS |
13252 | CORE_ADDR lowpc; |
13253 | CORE_ADDR highpc; | |
13254 | struct die_info *child_die; | |
edb3359d | 13255 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13256 | const char *name; |
e142c38c | 13257 | CORE_ADDR baseaddr; |
801e3a5b | 13258 | struct block *block; |
edb3359d | 13259 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13260 | std::vector<struct symbol *> template_args; |
34eaf542 | 13261 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13262 | |
13263 | if (inlined_func) | |
13264 | { | |
13265 | /* If we do not have call site information, we can't show the | |
13266 | caller of this inlined function. That's too confusing, so | |
13267 | only use the scope for local variables. */ | |
13268 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13269 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13270 | if (call_line == NULL || call_file == NULL) | |
13271 | { | |
13272 | read_lexical_block_scope (die, cu); | |
13273 | return; | |
13274 | } | |
13275 | } | |
c906108c | 13276 | |
b3b3bada | 13277 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13278 | |
94af9270 | 13279 | name = dwarf2_name (die, cu); |
c906108c | 13280 | |
e8d05480 JB |
13281 | /* Ignore functions with missing or empty names. These are actually |
13282 | illegal according to the DWARF standard. */ | |
13283 | if (name == NULL) | |
13284 | { | |
b98664d3 | 13285 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13286 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13287 | return; |
13288 | } | |
13289 | ||
13290 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13291 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13292 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13293 | { |
ae4d0c03 PM |
13294 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13295 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13296 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13297 | "for subprogram DIE at %s"), |
13298 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13299 | return; |
13300 | } | |
c906108c | 13301 | |
3e29f34a MR |
13302 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13303 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13304 | |
34eaf542 TT |
13305 | /* If we have any template arguments, then we must allocate a |
13306 | different sort of symbol. */ | |
13307 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13308 | { | |
13309 | if (child_die->tag == DW_TAG_template_type_param | |
13310 | || child_die->tag == DW_TAG_template_value_param) | |
13311 | { | |
e623cf5d | 13312 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13313 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13314 | break; |
13315 | } | |
13316 | } | |
13317 | ||
c24bdb02 | 13318 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13319 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13320 | (struct symbol *) templ_func); | |
4c2df51b | 13321 | |
81873cc8 | 13322 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13323 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13324 | cu->language); |
13325 | ||
4cecd739 DJ |
13326 | /* If there is a location expression for DW_AT_frame_base, record |
13327 | it. */ | |
e142c38c | 13328 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13329 | if (attr != nullptr) |
fe978cb0 | 13330 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13331 | |
63e43d3a PMR |
13332 | /* If there is a location for the static link, record it. */ |
13333 | newobj->static_link = NULL; | |
13334 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13335 | if (attr != nullptr) |
63e43d3a | 13336 | { |
224c3ddb SM |
13337 | newobj->static_link |
13338 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d AB |
13339 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
13340 | dwarf2_per_cu_addr_type (cu->per_cu)); | |
63e43d3a PMR |
13341 | } |
13342 | ||
c24bdb02 | 13343 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13344 | |
639d11d3 | 13345 | if (die->child != NULL) |
c906108c | 13346 | { |
639d11d3 | 13347 | child_die = die->child; |
c906108c SS |
13348 | while (child_die && child_die->tag) |
13349 | { | |
34eaf542 TT |
13350 | if (child_die->tag == DW_TAG_template_type_param |
13351 | || child_die->tag == DW_TAG_template_value_param) | |
13352 | { | |
13353 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13354 | ||
f1078f66 | 13355 | if (arg != NULL) |
2f4732b0 | 13356 | template_args.push_back (arg); |
34eaf542 TT |
13357 | } |
13358 | else | |
13359 | process_die (child_die, cu); | |
c906108c SS |
13360 | child_die = sibling_die (child_die); |
13361 | } | |
13362 | } | |
13363 | ||
d389af10 JK |
13364 | inherit_abstract_dies (die, cu); |
13365 | ||
4a811a97 UW |
13366 | /* If we have a DW_AT_specification, we might need to import using |
13367 | directives from the context of the specification DIE. See the | |
13368 | comment in determine_prefix. */ | |
13369 | if (cu->language == language_cplus | |
13370 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13371 | { | |
13372 | struct dwarf2_cu *spec_cu = cu; | |
13373 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13374 | ||
13375 | while (spec_die) | |
13376 | { | |
13377 | child_die = spec_die->child; | |
13378 | while (child_die && child_die->tag) | |
13379 | { | |
13380 | if (child_die->tag == DW_TAG_imported_module) | |
13381 | process_die (child_die, spec_cu); | |
13382 | child_die = sibling_die (child_die); | |
13383 | } | |
13384 | ||
13385 | /* In some cases, GCC generates specification DIEs that | |
13386 | themselves contain DW_AT_specification attributes. */ | |
13387 | spec_die = die_specification (spec_die, &spec_cu); | |
13388 | } | |
13389 | } | |
13390 | ||
c24bdb02 | 13391 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13392 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13393 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13394 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13395 | |
df8a16a1 | 13396 | /* For C++, set the block's scope. */ |
45280282 IB |
13397 | if ((cu->language == language_cplus |
13398 | || cu->language == language_fortran | |
c44af4eb TT |
13399 | || cu->language == language_d |
13400 | || cu->language == language_rust) | |
4d4ec4e5 | 13401 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13402 | block_set_scope (block, determine_prefix (die, cu), |
13403 | &objfile->objfile_obstack); | |
df8a16a1 | 13404 | |
801e3a5b JB |
13405 | /* If we have address ranges, record them. */ |
13406 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13407 | |
a60f3166 | 13408 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13409 | |
34eaf542 | 13410 | /* Attach template arguments to function. */ |
2f4732b0 | 13411 | if (!template_args.empty ()) |
34eaf542 TT |
13412 | { |
13413 | gdb_assert (templ_func != NULL); | |
13414 | ||
2f4732b0 | 13415 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13416 | templ_func->template_arguments |
8d749320 SM |
13417 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13418 | templ_func->n_template_arguments); | |
34eaf542 | 13419 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13420 | template_args.data (), |
34eaf542 | 13421 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13422 | |
13423 | /* Make sure that the symtab is set on the new symbols. Even | |
13424 | though they don't appear in this symtab directly, other parts | |
13425 | of gdb assume that symbols do, and this is reasonably | |
13426 | true. */ | |
8634679f | 13427 | for (symbol *sym : template_args) |
3e1d3d8c | 13428 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13429 | } |
13430 | ||
208d8187 JB |
13431 | /* In C++, we can have functions nested inside functions (e.g., when |
13432 | a function declares a class that has methods). This means that | |
13433 | when we finish processing a function scope, we may need to go | |
13434 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13435 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13436 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13437 | |
921e78cf JB |
13438 | /* If we've finished processing a top-level function, subsequent |
13439 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13440 | if (cu->get_builder ()->outermost_context_p ()) |
13441 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13442 | } |
13443 | ||
13444 | /* Process all the DIES contained within a lexical block scope. Start | |
13445 | a new scope, process the dies, and then close the scope. */ | |
13446 | ||
13447 | static void | |
e7c27a73 | 13448 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13449 | { |
518817b3 | 13450 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13451 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13452 | CORE_ADDR lowpc, highpc; |
13453 | struct die_info *child_die; | |
e142c38c DJ |
13454 | CORE_ADDR baseaddr; |
13455 | ||
b3b3bada | 13456 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13457 | |
13458 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13459 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13460 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13461 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13462 | describe ranges. */ |
e385593e JK |
13463 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13464 | { | |
13465 | case PC_BOUNDS_NOT_PRESENT: | |
13466 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13467 | there was no wrapping by that DW_TAG_lexical_block. | |
13468 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13469 | for (child_die = die->child; | |
13470 | child_die != NULL && child_die->tag; | |
13471 | child_die = sibling_die (child_die)) | |
13472 | process_die (child_die, cu); | |
13473 | return; | |
13474 | case PC_BOUNDS_INVALID: | |
13475 | return; | |
13476 | } | |
3e29f34a MR |
13477 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13478 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13479 | |
c24bdb02 | 13480 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13481 | if (die->child != NULL) |
c906108c | 13482 | { |
639d11d3 | 13483 | child_die = die->child; |
c906108c SS |
13484 | while (child_die && child_die->tag) |
13485 | { | |
e7c27a73 | 13486 | process_die (child_die, cu); |
c906108c SS |
13487 | child_die = sibling_die (child_die); |
13488 | } | |
13489 | } | |
3ea89b92 | 13490 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13491 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13492 | |
c24bdb02 KS |
13493 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13494 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13495 | { |
801e3a5b | 13496 | struct block *block |
c24bdb02 | 13497 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13498 | cstk.start_addr, highpc); |
801e3a5b JB |
13499 | |
13500 | /* Note that recording ranges after traversing children, as we | |
13501 | do here, means that recording a parent's ranges entails | |
13502 | walking across all its children's ranges as they appear in | |
13503 | the address map, which is quadratic behavior. | |
13504 | ||
13505 | It would be nicer to record the parent's ranges before | |
13506 | traversing its children, simply overriding whatever you find | |
13507 | there. But since we don't even decide whether to create a | |
13508 | block until after we've traversed its children, that's hard | |
13509 | to do. */ | |
13510 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13511 | } |
c24bdb02 KS |
13512 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13513 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13514 | } |
13515 | ||
216f72a1 | 13516 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13517 | |
13518 | static void | |
13519 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13520 | { | |
518817b3 | 13521 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13522 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13523 | CORE_ADDR pc, baseaddr; | |
13524 | struct attribute *attr; | |
13525 | struct call_site *call_site, call_site_local; | |
13526 | void **slot; | |
13527 | int nparams; | |
13528 | struct die_info *child_die; | |
13529 | ||
b3b3bada | 13530 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13531 | |
216f72a1 JK |
13532 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13533 | if (attr == NULL) | |
13534 | { | |
13535 | /* This was a pre-DWARF-5 GNU extension alias | |
13536 | for DW_AT_call_return_pc. */ | |
13537 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13538 | } | |
96408a79 SA |
13539 | if (!attr) |
13540 | { | |
b98664d3 | 13541 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13542 | "DIE %s [in module %s]"), |
13543 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13544 | return; |
13545 | } | |
cd6c91b4 | 13546 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13547 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13548 | |
13549 | if (cu->call_site_htab == NULL) | |
13550 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13551 | NULL, &objfile->objfile_obstack, | |
13552 | hashtab_obstack_allocate, NULL); | |
13553 | call_site_local.pc = pc; | |
13554 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13555 | if (*slot != NULL) | |
13556 | { | |
b98664d3 | 13557 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13558 | "DIE %s [in module %s]"), |
13559 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13560 | objfile_name (objfile)); |
96408a79 SA |
13561 | return; |
13562 | } | |
13563 | ||
13564 | /* Count parameters at the caller. */ | |
13565 | ||
13566 | nparams = 0; | |
13567 | for (child_die = die->child; child_die && child_die->tag; | |
13568 | child_die = sibling_die (child_die)) | |
13569 | { | |
216f72a1 JK |
13570 | if (child_die->tag != DW_TAG_call_site_parameter |
13571 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13572 | { |
b98664d3 | 13573 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13574 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13575 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13576 | objfile_name (objfile)); |
96408a79 SA |
13577 | continue; |
13578 | } | |
13579 | ||
13580 | nparams++; | |
13581 | } | |
13582 | ||
224c3ddb SM |
13583 | call_site |
13584 | = ((struct call_site *) | |
13585 | obstack_alloc (&objfile->objfile_obstack, | |
13586 | sizeof (*call_site) | |
13587 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13588 | *slot = call_site; |
13589 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13590 | call_site->pc = pc; | |
13591 | ||
216f72a1 JK |
13592 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13593 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13594 | { |
13595 | struct die_info *func_die; | |
13596 | ||
13597 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13598 | for (func_die = die->parent; | |
13599 | func_die && func_die->tag != DW_TAG_subprogram | |
13600 | && func_die->tag != DW_TAG_subroutine_type; | |
13601 | func_die = func_die->parent); | |
13602 | ||
216f72a1 JK |
13603 | /* DW_AT_call_all_calls is a superset |
13604 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13605 | if (func_die |
216f72a1 | 13606 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13607 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13608 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13609 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13610 | { | |
13611 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13612 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13613 | both the initial caller containing the real return address PC and | |
13614 | the final callee containing the current PC of a chain of tail | |
13615 | calls do not need to have the tail call list complete. But any | |
13616 | function candidate for a virtual tail call frame searched via | |
13617 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13618 | determined unambiguously. */ | |
13619 | } | |
13620 | else | |
13621 | { | |
13622 | struct type *func_type = NULL; | |
13623 | ||
13624 | if (func_die) | |
13625 | func_type = get_die_type (func_die, cu); | |
13626 | if (func_type != NULL) | |
13627 | { | |
13628 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13629 | ||
13630 | /* Enlist this call site to the function. */ | |
13631 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13632 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13633 | } | |
13634 | else | |
b98664d3 | 13635 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13636 | "DIE %s [in module %s]"), |
13637 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13638 | } |
13639 | } | |
13640 | ||
216f72a1 JK |
13641 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13642 | if (attr == NULL) | |
13643 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13644 | if (attr == NULL) | |
13645 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13646 | if (attr == NULL) |
216f72a1 JK |
13647 | { |
13648 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13649 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13650 | } | |
96408a79 | 13651 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13652 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13653 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13654 | else if (attr->form_is_block ()) |
96408a79 SA |
13655 | { |
13656 | struct dwarf2_locexpr_baton *dlbaton; | |
13657 | ||
8d749320 | 13658 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13659 | dlbaton->data = DW_BLOCK (attr)->data; |
13660 | dlbaton->size = DW_BLOCK (attr)->size; | |
13661 | dlbaton->per_cu = cu->per_cu; | |
13662 | ||
13663 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13664 | } | |
cd6c91b4 | 13665 | else if (attr->form_is_ref ()) |
96408a79 | 13666 | { |
96408a79 SA |
13667 | struct dwarf2_cu *target_cu = cu; |
13668 | struct die_info *target_die; | |
13669 | ||
ac9ec31b | 13670 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13671 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13672 | if (die_is_declaration (target_die, target_cu)) |
13673 | { | |
7d45c7c3 | 13674 | const char *target_physname; |
9112db09 JK |
13675 | |
13676 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13677 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13678 | if (target_physname == NULL) |
9112db09 | 13679 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13680 | if (target_physname == NULL) |
b98664d3 | 13681 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13682 | "physname, for referencing DIE %s [in module %s]"), |
13683 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13684 | else |
7d455152 | 13685 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13686 | } |
13687 | else | |
13688 | { | |
13689 | CORE_ADDR lowpc; | |
13690 | ||
13691 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13692 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13693 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13694 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13695 | "low pc, for referencing DIE %s [in module %s]"), |
13696 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13697 | else |
3e29f34a MR |
13698 | { |
13699 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13700 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13701 | } | |
96408a79 SA |
13702 | } |
13703 | } | |
13704 | else | |
b98664d3 | 13705 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13706 | "block nor reference, for DIE %s [in module %s]"), |
13707 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13708 | |
13709 | call_site->per_cu = cu->per_cu; | |
13710 | ||
13711 | for (child_die = die->child; | |
13712 | child_die && child_die->tag; | |
13713 | child_die = sibling_die (child_die)) | |
13714 | { | |
96408a79 | 13715 | struct call_site_parameter *parameter; |
1788b2d3 | 13716 | struct attribute *loc, *origin; |
96408a79 | 13717 | |
216f72a1 JK |
13718 | if (child_die->tag != DW_TAG_call_site_parameter |
13719 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13720 | { |
13721 | /* Already printed the complaint above. */ | |
13722 | continue; | |
13723 | } | |
13724 | ||
13725 | gdb_assert (call_site->parameter_count < nparams); | |
13726 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13727 | ||
1788b2d3 JK |
13728 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13729 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13730 | register is contained in DW_AT_call_value. */ |
96408a79 | 13731 | |
24c5c679 | 13732 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13733 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13734 | if (origin == NULL) | |
13735 | { | |
13736 | /* This was a pre-DWARF-5 GNU extension alias | |
13737 | for DW_AT_call_parameter. */ | |
13738 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13739 | } | |
cd6c91b4 | 13740 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13741 | { |
1788b2d3 | 13742 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
13743 | |
13744 | sect_offset sect_off | |
13745 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
13746 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
13747 | { |
13748 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13749 | binding can be done only inside one CU. Such referenced DIE | |
13750 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13751 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13752 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13753 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13754 | objfile_name (objfile)); |
d76b7dbc JK |
13755 | continue; |
13756 | } | |
9c541725 PA |
13757 | parameter->u.param_cu_off |
13758 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13759 | } |
4fc6c0d5 | 13760 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13761 | { |
b98664d3 | 13762 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13763 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13764 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13765 | continue; |
13766 | } | |
24c5c679 | 13767 | else |
96408a79 | 13768 | { |
24c5c679 JK |
13769 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13770 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13771 | if (parameter->u.dwarf_reg != -1) | |
13772 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13773 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13774 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13775 | ¶meter->u.fb_offset)) | |
13776 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13777 | else | |
13778 | { | |
b98664d3 | 13779 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13780 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13781 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13782 | "[in module %s]"), |
9d8780f0 | 13783 | sect_offset_str (child_die->sect_off), |
9c541725 | 13784 | objfile_name (objfile)); |
24c5c679 JK |
13785 | continue; |
13786 | } | |
96408a79 SA |
13787 | } |
13788 | ||
216f72a1 JK |
13789 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13790 | if (attr == NULL) | |
13791 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13792 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13793 | { |
b98664d3 | 13794 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13795 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13796 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13797 | objfile_name (objfile)); |
96408a79 SA |
13798 | continue; |
13799 | } | |
13800 | parameter->value = DW_BLOCK (attr)->data; | |
13801 | parameter->value_size = DW_BLOCK (attr)->size; | |
13802 | ||
13803 | /* Parameters are not pre-cleared by memset above. */ | |
13804 | parameter->data_value = NULL; | |
13805 | parameter->data_value_size = 0; | |
13806 | call_site->parameter_count++; | |
13807 | ||
216f72a1 JK |
13808 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13809 | if (attr == NULL) | |
13810 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13811 | if (attr != nullptr) |
96408a79 | 13812 | { |
4fc6c0d5 | 13813 | if (!attr->form_is_block ()) |
b98664d3 | 13814 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13815 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13816 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13817 | objfile_name (objfile)); |
96408a79 SA |
13818 | else |
13819 | { | |
13820 | parameter->data_value = DW_BLOCK (attr)->data; | |
13821 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13822 | } | |
13823 | } | |
13824 | } | |
13825 | } | |
13826 | ||
71a3c369 TT |
13827 | /* Helper function for read_variable. If DIE represents a virtual |
13828 | table, then return the type of the concrete object that is | |
13829 | associated with the virtual table. Otherwise, return NULL. */ | |
13830 | ||
13831 | static struct type * | |
13832 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13833 | { | |
13834 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13835 | if (attr == NULL) | |
13836 | return NULL; | |
13837 | ||
13838 | /* Find the type DIE. */ | |
13839 | struct die_info *type_die = NULL; | |
13840 | struct dwarf2_cu *type_cu = cu; | |
13841 | ||
cd6c91b4 | 13842 | if (attr->form_is_ref ()) |
71a3c369 TT |
13843 | type_die = follow_die_ref (die, attr, &type_cu); |
13844 | if (type_die == NULL) | |
13845 | return NULL; | |
13846 | ||
13847 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13848 | return NULL; | |
13849 | return die_containing_type (type_die, type_cu); | |
13850 | } | |
13851 | ||
13852 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13853 | ||
13854 | static void | |
13855 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13856 | { | |
13857 | struct rust_vtable_symbol *storage = NULL; | |
13858 | ||
13859 | if (cu->language == language_rust) | |
13860 | { | |
13861 | struct type *containing_type = rust_containing_type (die, cu); | |
13862 | ||
13863 | if (containing_type != NULL) | |
13864 | { | |
518817b3 | 13865 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13866 | |
468c0cbb | 13867 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13868 | initialize_objfile_symbol (storage); |
13869 | storage->concrete_type = containing_type; | |
cf724bc9 | 13870 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13871 | } |
13872 | } | |
13873 | ||
e4a62c65 TV |
13874 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13875 | struct attribute *abstract_origin | |
13876 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13877 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13878 | if (res == NULL && loc && abstract_origin) | |
13879 | { | |
13880 | /* We have a variable without a name, but with a location and an abstract | |
13881 | origin. This may be a concrete instance of an abstract variable | |
13882 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13883 | later. */ | |
13884 | struct dwarf2_cu *origin_cu = cu; | |
13885 | struct die_info *origin_die | |
13886 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13887 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13888 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13889 | } |
71a3c369 TT |
13890 | } |
13891 | ||
43988095 JK |
13892 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13893 | reading .debug_rnglists. | |
13894 | Callback's type should be: | |
13895 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13896 | Return true if the attributes are present and valid, otherwise, | |
13897 | return false. */ | |
13898 | ||
13899 | template <typename Callback> | |
13900 | static bool | |
13901 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13902 | Callback &&callback) | |
13903 | { | |
ed2dc618 | 13904 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13905 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13906 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13907 | bfd *obfd = objfile->obfd; |
43988095 JK |
13908 | /* Base address selection entry. */ |
13909 | CORE_ADDR base; | |
13910 | int found_base; | |
43988095 | 13911 | const gdb_byte *buffer; |
43988095 JK |
13912 | CORE_ADDR baseaddr; |
13913 | bool overflow = false; | |
13914 | ||
13915 | found_base = cu->base_known; | |
13916 | base = cu->base_address; | |
13917 | ||
96b79293 | 13918 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13919 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13920 | { | |
b98664d3 | 13921 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13922 | offset); |
13923 | return false; | |
13924 | } | |
13925 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13926 | ||
b3b3bada | 13927 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13928 | |
13929 | while (1) | |
13930 | { | |
7814882a JK |
13931 | /* Initialize it due to a false compiler warning. */ |
13932 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13933 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13934 | + dwarf2_per_objfile->rnglists.size); | |
13935 | unsigned int bytes_read; | |
13936 | ||
13937 | if (buffer == buf_end) | |
13938 | { | |
13939 | overflow = true; | |
13940 | break; | |
13941 | } | |
13942 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13943 | switch (rlet) | |
13944 | { | |
13945 | case DW_RLE_end_of_list: | |
13946 | break; | |
13947 | case DW_RLE_base_address: | |
13948 | if (buffer + cu->header.addr_size > buf_end) | |
13949 | { | |
13950 | overflow = true; | |
13951 | break; | |
13952 | } | |
13953 | base = read_address (obfd, buffer, cu, &bytes_read); | |
13954 | found_base = 1; | |
13955 | buffer += bytes_read; | |
13956 | break; | |
13957 | case DW_RLE_start_length: | |
13958 | if (buffer + cu->header.addr_size > buf_end) | |
13959 | { | |
13960 | overflow = true; | |
13961 | break; | |
13962 | } | |
13963 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
13964 | buffer += bytes_read; | |
13965 | range_end = (range_beginning | |
13966 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13967 | buffer += bytes_read; | |
13968 | if (buffer > buf_end) | |
13969 | { | |
13970 | overflow = true; | |
13971 | break; | |
13972 | } | |
13973 | break; | |
13974 | case DW_RLE_offset_pair: | |
13975 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13976 | buffer += bytes_read; | |
13977 | if (buffer > buf_end) | |
13978 | { | |
13979 | overflow = true; | |
13980 | break; | |
13981 | } | |
13982 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13983 | buffer += bytes_read; | |
13984 | if (buffer > buf_end) | |
13985 | { | |
13986 | overflow = true; | |
13987 | break; | |
13988 | } | |
13989 | break; | |
13990 | case DW_RLE_start_end: | |
13991 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13992 | { | |
13993 | overflow = true; | |
13994 | break; | |
13995 | } | |
13996 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
13997 | buffer += bytes_read; | |
13998 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
13999 | buffer += bytes_read; | |
14000 | break; | |
14001 | default: | |
b98664d3 | 14002 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14003 | return false; |
14004 | } | |
14005 | if (rlet == DW_RLE_end_of_list || overflow) | |
14006 | break; | |
14007 | if (rlet == DW_RLE_base_address) | |
14008 | continue; | |
14009 | ||
14010 | if (!found_base) | |
14011 | { | |
14012 | /* We have no valid base address for the ranges | |
14013 | data. */ | |
b98664d3 | 14014 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14015 | return false; |
14016 | } | |
14017 | ||
14018 | if (range_beginning > range_end) | |
14019 | { | |
14020 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14021 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14022 | return false; |
14023 | } | |
14024 | ||
14025 | /* Empty range entries have no effect. */ | |
14026 | if (range_beginning == range_end) | |
14027 | continue; | |
14028 | ||
14029 | range_beginning += base; | |
14030 | range_end += base; | |
14031 | ||
14032 | /* A not-uncommon case of bad debug info. | |
14033 | Don't pollute the addrmap with bad data. */ | |
14034 | if (range_beginning + baseaddr == 0 | |
14035 | && !dwarf2_per_objfile->has_section_at_zero) | |
14036 | { | |
b98664d3 | 14037 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14038 | " [in module %s]"), objfile_name (objfile)); |
14039 | continue; | |
14040 | } | |
14041 | ||
14042 | callback (range_beginning, range_end); | |
14043 | } | |
14044 | ||
14045 | if (overflow) | |
14046 | { | |
b98664d3 | 14047 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14048 | "for DW_AT_ranges attribute"), |
14049 | offset); | |
14050 | return false; | |
14051 | } | |
14052 | ||
14053 | return true; | |
14054 | } | |
14055 | ||
14056 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14057 | Callback's type should be: | |
14058 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14059 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14060 | |
43988095 | 14061 | template <typename Callback> |
43039443 | 14062 | static int |
5f46c5a5 | 14063 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14064 | Callback &&callback) |
43039443 | 14065 | { |
ed2dc618 | 14066 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14067 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14068 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14069 | struct comp_unit_head *cu_header = &cu->header; |
14070 | bfd *obfd = objfile->obfd; | |
14071 | unsigned int addr_size = cu_header->addr_size; | |
14072 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14073 | /* Base address selection entry. */ | |
14074 | CORE_ADDR base; | |
14075 | int found_base; | |
14076 | unsigned int dummy; | |
d521ce57 | 14077 | const gdb_byte *buffer; |
ff013f42 | 14078 | CORE_ADDR baseaddr; |
43039443 | 14079 | |
43988095 JK |
14080 | if (cu_header->version >= 5) |
14081 | return dwarf2_rnglists_process (offset, cu, callback); | |
14082 | ||
d00adf39 DE |
14083 | found_base = cu->base_known; |
14084 | base = cu->base_address; | |
43039443 | 14085 | |
96b79293 | 14086 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 14087 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14088 | { |
b98664d3 | 14089 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14090 | offset); |
14091 | return 0; | |
14092 | } | |
dce234bc | 14093 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14094 | |
b3b3bada | 14095 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14096 | |
43039443 JK |
14097 | while (1) |
14098 | { | |
14099 | CORE_ADDR range_beginning, range_end; | |
14100 | ||
14101 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14102 | buffer += addr_size; | |
14103 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14104 | buffer += addr_size; | |
14105 | offset += 2 * addr_size; | |
14106 | ||
14107 | /* An end of list marker is a pair of zero addresses. */ | |
14108 | if (range_beginning == 0 && range_end == 0) | |
14109 | /* Found the end of list entry. */ | |
14110 | break; | |
14111 | ||
14112 | /* Each base address selection entry is a pair of 2 values. | |
14113 | The first is the largest possible address, the second is | |
14114 | the base address. Check for a base address here. */ | |
14115 | if ((range_beginning & mask) == mask) | |
14116 | { | |
28d2bfb9 AB |
14117 | /* If we found the largest possible address, then we already |
14118 | have the base address in range_end. */ | |
14119 | base = range_end; | |
43039443 JK |
14120 | found_base = 1; |
14121 | continue; | |
14122 | } | |
14123 | ||
14124 | if (!found_base) | |
14125 | { | |
14126 | /* We have no valid base address for the ranges | |
14127 | data. */ | |
b98664d3 | 14128 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14129 | return 0; |
14130 | } | |
14131 | ||
9277c30c UW |
14132 | if (range_beginning > range_end) |
14133 | { | |
14134 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14135 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14136 | return 0; |
14137 | } | |
14138 | ||
14139 | /* Empty range entries have no effect. */ | |
14140 | if (range_beginning == range_end) | |
14141 | continue; | |
14142 | ||
43039443 JK |
14143 | range_beginning += base; |
14144 | range_end += base; | |
14145 | ||
01093045 DE |
14146 | /* A not-uncommon case of bad debug info. |
14147 | Don't pollute the addrmap with bad data. */ | |
14148 | if (range_beginning + baseaddr == 0 | |
14149 | && !dwarf2_per_objfile->has_section_at_zero) | |
14150 | { | |
b98664d3 | 14151 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14152 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14153 | continue; |
14154 | } | |
14155 | ||
5f46c5a5 JK |
14156 | callback (range_beginning, range_end); |
14157 | } | |
14158 | ||
14159 | return 1; | |
14160 | } | |
14161 | ||
14162 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14163 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14164 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14165 | ||
14166 | static int | |
14167 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14168 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 14169 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 14170 | { |
518817b3 | 14171 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 14172 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 14173 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14174 | int low_set = 0; |
14175 | CORE_ADDR low = 0; | |
14176 | CORE_ADDR high = 0; | |
14177 | int retval; | |
14178 | ||
14179 | retval = dwarf2_ranges_process (offset, cu, | |
14180 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14181 | { | |
9277c30c | 14182 | if (ranges_pst != NULL) |
3e29f34a MR |
14183 | { |
14184 | CORE_ADDR lowpc; | |
14185 | CORE_ADDR highpc; | |
14186 | ||
79748972 TT |
14187 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14188 | range_beginning + baseaddr) | |
14189 | - baseaddr); | |
14190 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14191 | range_end + baseaddr) | |
14192 | - baseaddr); | |
d320c2b5 TT |
14193 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14194 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14195 | } |
ff013f42 | 14196 | |
43039443 JK |
14197 | /* FIXME: This is recording everything as a low-high |
14198 | segment of consecutive addresses. We should have a | |
14199 | data structure for discontiguous block ranges | |
14200 | instead. */ | |
14201 | if (! low_set) | |
14202 | { | |
14203 | low = range_beginning; | |
14204 | high = range_end; | |
14205 | low_set = 1; | |
14206 | } | |
14207 | else | |
14208 | { | |
14209 | if (range_beginning < low) | |
14210 | low = range_beginning; | |
14211 | if (range_end > high) | |
14212 | high = range_end; | |
14213 | } | |
5f46c5a5 JK |
14214 | }); |
14215 | if (!retval) | |
14216 | return 0; | |
43039443 JK |
14217 | |
14218 | if (! low_set) | |
14219 | /* If the first entry is an end-of-list marker, the range | |
14220 | describes an empty scope, i.e. no instructions. */ | |
14221 | return 0; | |
14222 | ||
14223 | if (low_return) | |
14224 | *low_return = low; | |
14225 | if (high_return) | |
14226 | *high_return = high; | |
14227 | return 1; | |
14228 | } | |
14229 | ||
3a2b436a JK |
14230 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14231 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14232 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14233 | |
3a2b436a | 14234 | static enum pc_bounds_kind |
af34e669 | 14235 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14236 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14237 | dwarf2_psymtab *pst) |
c906108c | 14238 | { |
518817b3 SM |
14239 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14240 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14241 | struct attribute *attr; |
91da1414 | 14242 | struct attribute *attr_high; |
af34e669 DJ |
14243 | CORE_ADDR low = 0; |
14244 | CORE_ADDR high = 0; | |
e385593e | 14245 | enum pc_bounds_kind ret; |
c906108c | 14246 | |
91da1414 MW |
14247 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14248 | if (attr_high) | |
af34e669 | 14249 | { |
e142c38c | 14250 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14251 | if (attr != nullptr) |
91da1414 | 14252 | { |
cd6c91b4 TT |
14253 | low = attr->value_as_address (); |
14254 | high = attr_high->value_as_address (); | |
14255 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14256 | high += low; |
91da1414 | 14257 | } |
af34e669 DJ |
14258 | else |
14259 | /* Found high w/o low attribute. */ | |
e385593e | 14260 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14261 | |
14262 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14263 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14264 | } |
c906108c | 14265 | else |
af34e669 | 14266 | { |
e142c38c | 14267 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14268 | if (attr != NULL) |
14269 | { | |
18a8505e | 14270 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14271 | We take advantage of the fact that DW_AT_ranges does not appear |
14272 | in DW_TAG_compile_unit of DWO files. */ | |
14273 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14274 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14275 | + (need_ranges_base | |
14276 | ? cu->ranges_base | |
14277 | : 0)); | |
2e3cf129 | 14278 | |
af34e669 | 14279 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14280 | .debug_ranges section. */ |
2e3cf129 | 14281 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14282 | return PC_BOUNDS_INVALID; |
43039443 | 14283 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14284 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14285 | } |
e385593e JK |
14286 | else |
14287 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14288 | } |
c906108c | 14289 | |
48fbe735 | 14290 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14291 | if (high <= low) |
e385593e | 14292 | return PC_BOUNDS_INVALID; |
c906108c SS |
14293 | |
14294 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14295 | eliminate duplicate copies of functions and vtables and such. | |
14296 | The linker will arbitrarily choose one and discard the others. | |
14297 | The AT_*_pc values for such functions refer to local labels in | |
14298 | these sections. If the section from that file was discarded, the | |
14299 | labels are not in the output, so the relocs get a value of 0. | |
14300 | If this is a discarded function, mark the pc bounds as invalid, | |
14301 | so that GDB will ignore it. */ | |
72dca2f5 | 14302 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14303 | return PC_BOUNDS_INVALID; |
c906108c SS |
14304 | |
14305 | *lowpc = low; | |
96408a79 SA |
14306 | if (highpc) |
14307 | *highpc = high; | |
af34e669 | 14308 | return ret; |
c906108c SS |
14309 | } |
14310 | ||
b084d499 JB |
14311 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14312 | its low and high PC addresses. Do nothing if these addresses could not | |
14313 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14314 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14315 | ||
14316 | static void | |
14317 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14318 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14319 | struct dwarf2_cu *cu) | |
14320 | { | |
14321 | CORE_ADDR low, high; | |
14322 | struct die_info *child = die->child; | |
14323 | ||
e385593e | 14324 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14325 | { |
325fac50 PA |
14326 | *lowpc = std::min (*lowpc, low); |
14327 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14328 | } |
14329 | ||
14330 | /* If the language does not allow nested subprograms (either inside | |
14331 | subprograms or lexical blocks), we're done. */ | |
14332 | if (cu->language != language_ada) | |
14333 | return; | |
6e70227d | 14334 | |
b084d499 JB |
14335 | /* Check all the children of the given DIE. If it contains nested |
14336 | subprograms, then check their pc bounds. Likewise, we need to | |
14337 | check lexical blocks as well, as they may also contain subprogram | |
14338 | definitions. */ | |
14339 | while (child && child->tag) | |
14340 | { | |
14341 | if (child->tag == DW_TAG_subprogram | |
14342 | || child->tag == DW_TAG_lexical_block) | |
14343 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14344 | child = sibling_die (child); | |
14345 | } | |
14346 | } | |
14347 | ||
fae299cd DC |
14348 | /* Get the low and high pc's represented by the scope DIE, and store |
14349 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14350 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14351 | ||
14352 | static void | |
14353 | get_scope_pc_bounds (struct die_info *die, | |
14354 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14355 | struct dwarf2_cu *cu) | |
14356 | { | |
14357 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14358 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14359 | CORE_ADDR current_low, current_high; | |
14360 | ||
3a2b436a | 14361 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14362 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14363 | { |
14364 | best_low = current_low; | |
14365 | best_high = current_high; | |
14366 | } | |
14367 | else | |
14368 | { | |
14369 | struct die_info *child = die->child; | |
14370 | ||
14371 | while (child && child->tag) | |
14372 | { | |
14373 | switch (child->tag) { | |
14374 | case DW_TAG_subprogram: | |
b084d499 | 14375 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14376 | break; |
14377 | case DW_TAG_namespace: | |
f55ee35c | 14378 | case DW_TAG_module: |
fae299cd DC |
14379 | /* FIXME: carlton/2004-01-16: Should we do this for |
14380 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14381 | that current GCC's always emit the DIEs corresponding | |
14382 | to definitions of methods of classes as children of a | |
14383 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14384 | the DIEs giving the declarations, which could be | |
14385 | anywhere). But I don't see any reason why the | |
14386 | standards says that they have to be there. */ | |
14387 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14388 | ||
14389 | if (current_low != ((CORE_ADDR) -1)) | |
14390 | { | |
325fac50 PA |
14391 | best_low = std::min (best_low, current_low); |
14392 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14393 | } |
14394 | break; | |
14395 | default: | |
0963b4bd | 14396 | /* Ignore. */ |
fae299cd DC |
14397 | break; |
14398 | } | |
14399 | ||
14400 | child = sibling_die (child); | |
14401 | } | |
14402 | } | |
14403 | ||
14404 | *lowpc = best_low; | |
14405 | *highpc = best_high; | |
14406 | } | |
14407 | ||
801e3a5b JB |
14408 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14409 | in DIE. */ | |
380bca97 | 14410 | |
801e3a5b JB |
14411 | static void |
14412 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14413 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14414 | { | |
518817b3 | 14415 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14416 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14417 | struct attribute *attr; |
91da1414 | 14418 | struct attribute *attr_high; |
801e3a5b | 14419 | |
91da1414 MW |
14420 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14421 | if (attr_high) | |
801e3a5b | 14422 | { |
801e3a5b | 14423 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14424 | if (attr != nullptr) |
801e3a5b | 14425 | { |
cd6c91b4 TT |
14426 | CORE_ADDR low = attr->value_as_address (); |
14427 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14428 | |
cd6c91b4 | 14429 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14430 | high += low; |
9a619af0 | 14431 | |
3e29f34a MR |
14432 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14433 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14434 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14435 | } |
14436 | } | |
14437 | ||
14438 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14439 | if (attr != nullptr) |
801e3a5b | 14440 | { |
18a8505e | 14441 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14442 | We take advantage of the fact that DW_AT_ranges does not appear |
14443 | in DW_TAG_compile_unit of DWO files. */ | |
14444 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14445 | |
14446 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14447 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14448 | unsigned long offset = (DW_UNSND (attr) |
14449 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14450 | |
2d5f09ec | 14451 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14452 | dwarf2_ranges_process (offset, cu, |
14453 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14454 | { | |
58fdfd2c JK |
14455 | start += baseaddr; |
14456 | end += baseaddr; | |
5f46c5a5 JK |
14457 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14458 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14459 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14460 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14461 | }); |
2d5f09ec KB |
14462 | |
14463 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14464 | } |
14465 | } | |
14466 | ||
685b1105 JK |
14467 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14468 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14469 | |
685b1105 JK |
14470 | static void |
14471 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14472 | { |
38360086 | 14473 | int major, minor; |
60d5a603 JK |
14474 | |
14475 | if (cu->producer == NULL) | |
14476 | { | |
14477 | /* For unknown compilers expect their behavior is DWARF version | |
14478 | compliant. | |
14479 | ||
14480 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14481 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14482 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14483 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14484 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14485 | } |
b1ffba5a | 14486 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14487 | { |
38360086 MW |
14488 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14489 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14490 | } |
5230b05a | 14491 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14492 | { |
14493 | cu->producer_is_icc = true; | |
14494 | cu->producer_is_icc_lt_14 = major < 14; | |
14495 | } | |
c258c396 JD |
14496 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14497 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14498 | else |
14499 | { | |
14500 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14501 | compliant. */ | |
60d5a603 JK |
14502 | } |
14503 | ||
9068261f | 14504 | cu->checked_producer = true; |
685b1105 | 14505 | } |
ba919b58 | 14506 | |
685b1105 JK |
14507 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14508 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14509 | during 4.6.0 experimental. */ | |
14510 | ||
9068261f | 14511 | static bool |
685b1105 JK |
14512 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14513 | { | |
14514 | if (!cu->checked_producer) | |
14515 | check_producer (cu); | |
14516 | ||
14517 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14518 | } |
14519 | ||
c258c396 JD |
14520 | |
14521 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14522 | with incorrect is_stmt attributes. */ | |
14523 | ||
14524 | static bool | |
14525 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14526 | { | |
14527 | if (!cu->checked_producer) | |
14528 | check_producer (cu); | |
14529 | ||
14530 | return cu->producer_is_codewarrior; | |
14531 | } | |
14532 | ||
405feb71 | 14533 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14534 | DW_AT_accessibility. */ |
14535 | ||
14536 | static enum dwarf_access_attribute | |
14537 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14538 | { | |
14539 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14540 | { | |
14541 | /* The default DWARF 2 accessibility for members is public, the default | |
14542 | accessibility for inheritance is private. */ | |
14543 | ||
14544 | if (die->tag != DW_TAG_inheritance) | |
14545 | return DW_ACCESS_public; | |
14546 | else | |
14547 | return DW_ACCESS_private; | |
14548 | } | |
14549 | else | |
14550 | { | |
14551 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14552 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14553 | depends on the container kind. */ | |
14554 | ||
14555 | if (die->parent->tag == DW_TAG_class_type) | |
14556 | return DW_ACCESS_private; | |
14557 | else | |
14558 | return DW_ACCESS_public; | |
14559 | } | |
14560 | } | |
14561 | ||
74ac6d43 TT |
14562 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14563 | offset. If the attribute was not found return 0, otherwise return | |
14564 | 1. If it was found but could not properly be handled, set *OFFSET | |
14565 | to 0. */ | |
14566 | ||
14567 | static int | |
14568 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14569 | LONGEST *offset) | |
14570 | { | |
14571 | struct attribute *attr; | |
14572 | ||
14573 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14574 | if (attr != NULL) | |
14575 | { | |
14576 | *offset = 0; | |
14577 | ||
14578 | /* Note that we do not check for a section offset first here. | |
14579 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14580 | so if we see it, we can assume that a constant form is really | |
14581 | a constant and not a section offset. */ | |
cd6c91b4 | 14582 | if (attr->form_is_constant ()) |
74ac6d43 | 14583 | *offset = dwarf2_get_attr_constant_value (attr, 0); |
cd6c91b4 | 14584 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14585 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14586 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14587 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14588 | else | |
14589 | dwarf2_complex_location_expr_complaint (); | |
14590 | ||
14591 | return 1; | |
14592 | } | |
14593 | ||
14594 | return 0; | |
14595 | } | |
14596 | ||
c906108c SS |
14597 | /* Add an aggregate field to the field list. */ |
14598 | ||
14599 | static void | |
107d2387 | 14600 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14601 | struct dwarf2_cu *cu) |
6e70227d | 14602 | { |
518817b3 | 14603 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14604 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14605 | struct nextfield *new_field; |
14606 | struct attribute *attr; | |
14607 | struct field *fp; | |
15d034d0 | 14608 | const char *fieldname = ""; |
c906108c | 14609 | |
7d0ccb61 DJ |
14610 | if (die->tag == DW_TAG_inheritance) |
14611 | { | |
be2daae6 TT |
14612 | fip->baseclasses.emplace_back (); |
14613 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14614 | } |
14615 | else | |
14616 | { | |
be2daae6 TT |
14617 | fip->fields.emplace_back (); |
14618 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14619 | } |
be2daae6 | 14620 | |
c906108c SS |
14621 | fip->nfields++; |
14622 | ||
e142c38c | 14623 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14624 | if (attr != nullptr) |
c906108c | 14625 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14626 | else |
14627 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14628 | if (new_field->accessibility != DW_ACCESS_public) |
14629 | fip->non_public_fields = 1; | |
60d5a603 | 14630 | |
e142c38c | 14631 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14632 | if (attr != nullptr) |
c906108c | 14633 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14634 | else |
14635 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14636 | |
14637 | fp = &new_field->field; | |
a9a9bd0f | 14638 | |
e142c38c | 14639 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14640 | { |
74ac6d43 TT |
14641 | LONGEST offset; |
14642 | ||
a9a9bd0f | 14643 | /* Data member other than a C++ static data member. */ |
6e70227d | 14644 | |
c906108c | 14645 | /* Get type of field. */ |
e7c27a73 | 14646 | fp->type = die_type (die, cu); |
c906108c | 14647 | |
d6a843b5 | 14648 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14649 | |
c906108c | 14650 | /* Get bit size of field (zero if none). */ |
e142c38c | 14651 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14652 | if (attr != nullptr) |
c906108c SS |
14653 | { |
14654 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14655 | } | |
14656 | else | |
14657 | { | |
14658 | FIELD_BITSIZE (*fp) = 0; | |
14659 | } | |
14660 | ||
14661 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14662 | if (handle_data_member_location (die, cu, &offset)) |
14663 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14664 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14665 | if (attr != nullptr) |
c906108c | 14666 | { |
d5a22e77 | 14667 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14668 | { |
14669 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14670 | additional bit offset from the MSB of the containing |
14671 | anonymous object to the MSB of the field. We don't | |
14672 | have to do anything special since we don't need to | |
14673 | know the size of the anonymous object. */ | |
f41f5e61 | 14674 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14675 | } |
14676 | else | |
14677 | { | |
14678 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14679 | MSB of the anonymous object, subtract off the number of |
14680 | bits from the MSB of the field to the MSB of the | |
14681 | object, and then subtract off the number of bits of | |
14682 | the field itself. The result is the bit offset of | |
14683 | the LSB of the field. */ | |
c906108c SS |
14684 | int anonymous_size; |
14685 | int bit_offset = DW_UNSND (attr); | |
14686 | ||
e142c38c | 14687 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14688 | if (attr != nullptr) |
c906108c SS |
14689 | { |
14690 | /* The size of the anonymous object containing | |
14691 | the bit field is explicit, so use the | |
14692 | indicated size (in bytes). */ | |
14693 | anonymous_size = DW_UNSND (attr); | |
14694 | } | |
14695 | else | |
14696 | { | |
14697 | /* The size of the anonymous object containing | |
14698 | the bit field must be inferred from the type | |
14699 | attribute of the data member containing the | |
14700 | bit field. */ | |
14701 | anonymous_size = TYPE_LENGTH (fp->type); | |
14702 | } | |
f41f5e61 PA |
14703 | SET_FIELD_BITPOS (*fp, |
14704 | (FIELD_BITPOS (*fp) | |
14705 | + anonymous_size * bits_per_byte | |
14706 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14707 | } |
14708 | } | |
da5b30da AA |
14709 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14710 | if (attr != NULL) | |
14711 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
14712 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
14713 | |
14714 | /* Get name of field. */ | |
39cbfefa DJ |
14715 | fieldname = dwarf2_name (die, cu); |
14716 | if (fieldname == NULL) | |
14717 | fieldname = ""; | |
d8151005 DJ |
14718 | |
14719 | /* The name is already allocated along with this objfile, so we don't | |
14720 | need to duplicate it for the type. */ | |
14721 | fp->name = fieldname; | |
c906108c SS |
14722 | |
14723 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14724 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14725 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14726 | { |
d48cc9dd | 14727 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14728 | new_field->accessibility = DW_ACCESS_private; |
14729 | fip->non_public_fields = 1; | |
14730 | } | |
14731 | } | |
a9a9bd0f | 14732 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14733 | { |
a9a9bd0f DC |
14734 | /* C++ static member. */ |
14735 | ||
14736 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14737 | is a declaration, but all versions of G++ as of this writing | |
14738 | (so through at least 3.2.1) incorrectly generate | |
14739 | DW_TAG_variable tags. */ | |
6e70227d | 14740 | |
ff355380 | 14741 | const char *physname; |
c906108c | 14742 | |
a9a9bd0f | 14743 | /* Get name of field. */ |
39cbfefa DJ |
14744 | fieldname = dwarf2_name (die, cu); |
14745 | if (fieldname == NULL) | |
c906108c SS |
14746 | return; |
14747 | ||
254e6b9e | 14748 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14749 | if (attr |
14750 | /* Only create a symbol if this is an external value. | |
14751 | new_symbol checks this and puts the value in the global symbol | |
14752 | table, which we want. If it is not external, new_symbol | |
14753 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14754 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14755 | { |
14756 | /* A static const member, not much different than an enum as far as | |
14757 | we're concerned, except that we can support more types. */ | |
14758 | new_symbol (die, NULL, cu); | |
14759 | } | |
14760 | ||
2df3850c | 14761 | /* Get physical name. */ |
ff355380 | 14762 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14763 | |
d8151005 DJ |
14764 | /* The name is already allocated along with this objfile, so we don't |
14765 | need to duplicate it for the type. */ | |
14766 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14767 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14768 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14769 | } |
14770 | else if (die->tag == DW_TAG_inheritance) | |
14771 | { | |
74ac6d43 | 14772 | LONGEST offset; |
d4b96c9a | 14773 | |
74ac6d43 TT |
14774 | /* C++ base class field. */ |
14775 | if (handle_data_member_location (die, cu, &offset)) | |
14776 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 14777 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14778 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14779 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14780 | } |
2ddeaf8a TT |
14781 | else if (die->tag == DW_TAG_variant_part) |
14782 | { | |
14783 | /* process_structure_scope will treat this DIE as a union. */ | |
14784 | process_structure_scope (die, cu); | |
14785 | ||
14786 | /* The variant part is relative to the start of the enclosing | |
14787 | structure. */ | |
14788 | SET_FIELD_BITPOS (*fp, 0); | |
14789 | fp->type = get_die_type (die, cu); | |
14790 | fp->artificial = 1; | |
14791 | fp->name = "<<variant>>"; | |
c8c81635 TT |
14792 | |
14793 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
14794 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
14795 | child sizes, being sure to account for the offset at which |
14796 | each child is seen. */ | |
c8c81635 TT |
14797 | if (TYPE_LENGTH (fp->type) == 0) |
14798 | { | |
14799 | unsigned max = 0; | |
14800 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
14801 | { |
14802 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
14803 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
14804 | if (len > max) | |
14805 | max = len; | |
14806 | } | |
c8c81635 TT |
14807 | TYPE_LENGTH (fp->type) = max; |
14808 | } | |
2ddeaf8a TT |
14809 | } |
14810 | else | |
14811 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14812 | } |
14813 | ||
883fd55a KS |
14814 | /* Can the type given by DIE define another type? */ |
14815 | ||
14816 | static bool | |
14817 | type_can_define_types (const struct die_info *die) | |
14818 | { | |
14819 | switch (die->tag) | |
14820 | { | |
14821 | case DW_TAG_typedef: | |
14822 | case DW_TAG_class_type: | |
14823 | case DW_TAG_structure_type: | |
14824 | case DW_TAG_union_type: | |
14825 | case DW_TAG_enumeration_type: | |
14826 | return true; | |
14827 | ||
14828 | default: | |
14829 | return false; | |
14830 | } | |
14831 | } | |
14832 | ||
14833 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14834 | |
14835 | static void | |
883fd55a KS |
14836 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14837 | struct dwarf2_cu *cu) | |
6e70227d | 14838 | { |
be2daae6 TT |
14839 | struct decl_field fp; |
14840 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14841 | |
883fd55a | 14842 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14843 | |
883fd55a | 14844 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14845 | fp.name = dwarf2_name (die, cu); |
14846 | fp.type = read_type_die (die, cu); | |
98751a41 | 14847 | |
c191a687 KS |
14848 | /* Save accessibility. */ |
14849 | enum dwarf_access_attribute accessibility; | |
14850 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14851 | if (attr != NULL) | |
14852 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14853 | else | |
14854 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14855 | switch (accessibility) | |
14856 | { | |
14857 | case DW_ACCESS_public: | |
14858 | /* The assumed value if neither private nor protected. */ | |
14859 | break; | |
14860 | case DW_ACCESS_private: | |
be2daae6 | 14861 | fp.is_private = 1; |
c191a687 KS |
14862 | break; |
14863 | case DW_ACCESS_protected: | |
be2daae6 | 14864 | fp.is_protected = 1; |
c191a687 KS |
14865 | break; |
14866 | default: | |
b98664d3 | 14867 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14868 | } |
14869 | ||
883fd55a | 14870 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14871 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14872 | else |
be2daae6 | 14873 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14874 | } |
14875 | ||
c906108c SS |
14876 | /* Create the vector of fields, and attach it to the type. */ |
14877 | ||
14878 | static void | |
fba45db2 | 14879 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14880 | struct dwarf2_cu *cu) |
c906108c SS |
14881 | { |
14882 | int nfields = fip->nfields; | |
14883 | ||
14884 | /* Record the field count, allocate space for the array of fields, | |
14885 | and create blank accessibility bitfields if necessary. */ | |
14886 | TYPE_NFIELDS (type) = nfields; | |
14887 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14888 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14889 | |
b4ba55a1 | 14890 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14891 | { |
14892 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14893 | ||
14894 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14895 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14896 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14897 | ||
14898 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14899 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14900 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14901 | ||
774b6a14 TT |
14902 | TYPE_FIELD_IGNORE_BITS (type) = |
14903 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14904 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14905 | } |
14906 | ||
14907 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14908 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14909 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14910 | { |
be2daae6 | 14911 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14912 | unsigned char *pointer; |
c906108c SS |
14913 | |
14914 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14915 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14916 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14917 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14918 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14919 | } |
14920 | ||
2ddeaf8a TT |
14921 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
14922 | { | |
14923 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
14924 | ||
be2daae6 | 14925 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 14926 | { |
be2daae6 TT |
14927 | struct nextfield &field = fip->fields[index]; |
14928 | ||
14929 | if (field.variant.is_discriminant) | |
2ddeaf8a | 14930 | di->discriminant_index = index; |
be2daae6 | 14931 | else if (field.variant.default_branch) |
2ddeaf8a TT |
14932 | di->default_index = index; |
14933 | else | |
be2daae6 | 14934 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
14935 | } |
14936 | } | |
14937 | ||
be2daae6 TT |
14938 | /* Copy the saved-up fields into the field vector. */ |
14939 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14940 | { |
be2daae6 TT |
14941 | struct nextfield &field |
14942 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14943 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14944 | |
be2daae6 TT |
14945 | TYPE_FIELD (type, i) = field.field; |
14946 | switch (field.accessibility) | |
c906108c | 14947 | { |
c5aa993b | 14948 | case DW_ACCESS_private: |
b4ba55a1 | 14949 | if (cu->language != language_ada) |
be2daae6 | 14950 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14951 | break; |
c906108c | 14952 | |
c5aa993b | 14953 | case DW_ACCESS_protected: |
b4ba55a1 | 14954 | if (cu->language != language_ada) |
be2daae6 | 14955 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14956 | break; |
c906108c | 14957 | |
c5aa993b JM |
14958 | case DW_ACCESS_public: |
14959 | break; | |
c906108c | 14960 | |
c5aa993b JM |
14961 | default: |
14962 | /* Unknown accessibility. Complain and treat it as public. */ | |
14963 | { | |
b98664d3 | 14964 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14965 | field.accessibility); |
c5aa993b JM |
14966 | } |
14967 | break; | |
c906108c | 14968 | } |
be2daae6 | 14969 | if (i < fip->baseclasses.size ()) |
c906108c | 14970 | { |
be2daae6 | 14971 | switch (field.virtuality) |
c906108c | 14972 | { |
c5aa993b JM |
14973 | case DW_VIRTUALITY_virtual: |
14974 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14975 | if (cu->language == language_ada) |
a73c6dcd | 14976 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14977 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14978 | break; |
c906108c SS |
14979 | } |
14980 | } | |
c906108c SS |
14981 | } |
14982 | } | |
14983 | ||
7d27a96d TT |
14984 | /* Return true if this member function is a constructor, false |
14985 | otherwise. */ | |
14986 | ||
14987 | static int | |
14988 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14989 | { | |
14990 | const char *fieldname; | |
fe978cb0 | 14991 | const char *type_name; |
7d27a96d TT |
14992 | int len; |
14993 | ||
14994 | if (die->parent == NULL) | |
14995 | return 0; | |
14996 | ||
14997 | if (die->parent->tag != DW_TAG_structure_type | |
14998 | && die->parent->tag != DW_TAG_union_type | |
14999 | && die->parent->tag != DW_TAG_class_type) | |
15000 | return 0; | |
15001 | ||
15002 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15003 | type_name = dwarf2_name (die->parent, cu); |
15004 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15005 | return 0; |
15006 | ||
15007 | len = strlen (fieldname); | |
fe978cb0 PA |
15008 | return (strncmp (fieldname, type_name, len) == 0 |
15009 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15010 | } |
15011 | ||
e35000a7 TBA |
15012 | /* Check if the given VALUE is a recognized enum |
15013 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15014 | Table 7.24. */ | |
15015 | ||
15016 | static bool | |
15017 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15018 | { | |
15019 | switch (value) | |
15020 | { | |
15021 | case DW_DEFAULTED_no: | |
15022 | case DW_DEFAULTED_in_class: | |
15023 | case DW_DEFAULTED_out_of_class: | |
15024 | return true; | |
15025 | } | |
15026 | ||
3142e908 | 15027 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15028 | return false; |
15029 | } | |
15030 | ||
c906108c SS |
15031 | /* Add a member function to the proper fieldlist. */ |
15032 | ||
15033 | static void | |
107d2387 | 15034 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15035 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15036 | { |
518817b3 | 15037 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15038 | struct attribute *attr; |
c906108c | 15039 | int i; |
be2daae6 | 15040 | struct fnfieldlist *flp = nullptr; |
c906108c | 15041 | struct fn_field *fnp; |
15d034d0 | 15042 | const char *fieldname; |
f792889a | 15043 | struct type *this_type; |
60d5a603 | 15044 | enum dwarf_access_attribute accessibility; |
c906108c | 15045 | |
b4ba55a1 | 15046 | if (cu->language == language_ada) |
a73c6dcd | 15047 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15048 | |
2df3850c | 15049 | /* Get name of member function. */ |
39cbfefa DJ |
15050 | fieldname = dwarf2_name (die, cu); |
15051 | if (fieldname == NULL) | |
2df3850c | 15052 | return; |
c906108c | 15053 | |
c906108c | 15054 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15055 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15056 | { |
27bfe10e | 15057 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15058 | { |
15059 | flp = &fip->fnfieldlists[i]; | |
15060 | break; | |
15061 | } | |
c906108c SS |
15062 | } |
15063 | ||
be2daae6 TT |
15064 | /* Create a new fnfieldlist if necessary. */ |
15065 | if (flp == nullptr) | |
c906108c | 15066 | { |
be2daae6 TT |
15067 | fip->fnfieldlists.emplace_back (); |
15068 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15069 | flp->name = fieldname; |
be2daae6 | 15070 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15071 | } |
15072 | ||
be2daae6 TT |
15073 | /* Create a new member function field and add it to the vector of |
15074 | fnfieldlists. */ | |
15075 | flp->fnfields.emplace_back (); | |
15076 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15077 | |
15078 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15079 | if (cu->language == language_cplus) |
be2daae6 TT |
15080 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15081 | die, cu); | |
3da10d80 KS |
15082 | else |
15083 | { | |
1d06ead6 | 15084 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15085 | fnp->physname = physname ? physname : ""; |
15086 | } | |
15087 | ||
c906108c | 15088 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15089 | this_type = read_type_die (die, cu); |
15090 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15091 | { |
f792889a | 15092 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15093 | |
f792889a | 15094 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15095 | of the method itself (TYPE_CODE_METHOD). */ |
15096 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15097 | TYPE_TARGET_TYPE (this_type), |
15098 | TYPE_FIELDS (this_type), | |
15099 | TYPE_NFIELDS (this_type), | |
15100 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15101 | |
15102 | /* Handle static member functions. | |
c5aa993b | 15103 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15104 | member functions. G++ helps GDB by marking the first |
15105 | parameter for non-static member functions (which is the this | |
15106 | pointer) as artificial. We obtain this information from | |
15107 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15108 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15109 | fnp->voffset = VOFFSET_STATIC; |
15110 | } | |
15111 | else | |
b98664d3 | 15112 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15113 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15114 | |
15115 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15116 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15117 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15118 | |
3e43a32a MS |
15119 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15120 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15121 | |
15122 | /* Get accessibility. */ | |
e142c38c | 15123 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15124 | if (attr != nullptr) |
aead7601 | 15125 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15126 | else |
15127 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15128 | switch (accessibility) | |
c906108c | 15129 | { |
60d5a603 JK |
15130 | case DW_ACCESS_private: |
15131 | fnp->is_private = 1; | |
15132 | break; | |
15133 | case DW_ACCESS_protected: | |
15134 | fnp->is_protected = 1; | |
15135 | break; | |
c906108c SS |
15136 | } |
15137 | ||
b02dede2 | 15138 | /* Check for artificial methods. */ |
e142c38c | 15139 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15140 | if (attr && DW_UNSND (attr) != 0) |
15141 | fnp->is_artificial = 1; | |
15142 | ||
e35000a7 TBA |
15143 | /* Check for defaulted methods. */ |
15144 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15145 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15146 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15147 | ||
15148 | /* Check for deleted methods. */ | |
15149 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15150 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15151 | fnp->is_deleted = 1; | |
15152 | ||
7d27a96d TT |
15153 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15154 | ||
0d564a31 | 15155 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15156 | function. For older versions of GCC, this is an offset in the |
15157 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15158 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15159 | to the object address. */ |
15160 | ||
e142c38c | 15161 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15162 | if (attr != nullptr) |
8e19ed76 | 15163 | { |
4fc6c0d5 | 15164 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15165 | { |
aec5aa8b TT |
15166 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15167 | { | |
15168 | /* Old-style GCC. */ | |
15169 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15170 | } | |
15171 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15172 | || (DW_BLOCK (attr)->size > 1 | |
15173 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15174 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15175 | { | |
aec5aa8b TT |
15176 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15177 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15178 | dwarf2_complex_location_expr_complaint (); | |
15179 | else | |
15180 | fnp->voffset /= cu->header.addr_size; | |
15181 | fnp->voffset += 2; | |
15182 | } | |
15183 | else | |
15184 | dwarf2_complex_location_expr_complaint (); | |
15185 | ||
15186 | if (!fnp->fcontext) | |
7e993ebf KS |
15187 | { |
15188 | /* If there is no `this' field and no DW_AT_containing_type, | |
15189 | we cannot actually find a base class context for the | |
15190 | vtable! */ | |
15191 | if (TYPE_NFIELDS (this_type) == 0 | |
15192 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15193 | { | |
b98664d3 | 15194 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15195 | "function \"%s\" (offset %s)"), |
15196 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15197 | } |
15198 | else | |
15199 | { | |
15200 | fnp->fcontext | |
15201 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15202 | } | |
15203 | } | |
aec5aa8b | 15204 | } |
cd6c91b4 | 15205 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15206 | { |
4d3c2250 | 15207 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15208 | } |
15209 | else | |
15210 | { | |
4d3c2250 KB |
15211 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15212 | fieldname); | |
8e19ed76 | 15213 | } |
0d564a31 | 15214 | } |
d48cc9dd DJ |
15215 | else |
15216 | { | |
15217 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15218 | if (attr && DW_UNSND (attr)) | |
15219 | { | |
15220 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15221 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15222 | "but the vtable offset is not specified"), |
9d8780f0 | 15223 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15224 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15225 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15226 | } | |
15227 | } | |
c906108c SS |
15228 | } |
15229 | ||
15230 | /* Create the vector of member function fields, and attach it to the type. */ | |
15231 | ||
15232 | static void | |
fba45db2 | 15233 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15234 | struct dwarf2_cu *cu) |
c906108c | 15235 | { |
b4ba55a1 | 15236 | if (cu->language == language_ada) |
a73c6dcd | 15237 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15238 | |
c906108c SS |
15239 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15240 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15241 | TYPE_ALLOC (type, |
15242 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15243 | |
be2daae6 | 15244 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15245 | { |
be2daae6 | 15246 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15247 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15248 | |
be2daae6 TT |
15249 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15250 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15251 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15252 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15253 | ||
15254 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15255 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15256 | } |
15257 | ||
be2daae6 | 15258 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15259 | } |
15260 | ||
1168df01 JB |
15261 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15262 | language, zero otherwise. */ | |
15263 | static int | |
15264 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15265 | { | |
15266 | static const char vptr[] = "_vptr"; | |
15267 | ||
9c37b5ae TT |
15268 | /* Look for the C++ form of the vtable. */ |
15269 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15270 | return 1; |
15271 | ||
15272 | return 0; | |
15273 | } | |
15274 | ||
c0dd20ea | 15275 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15276 | functions, with the ABI-specified layout. If TYPE describes |
15277 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15278 | |
15279 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15280 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15281 | |
0b92b5bb TT |
15282 | static void |
15283 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15284 | { |
09e2d7c7 | 15285 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15286 | |
15287 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15288 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15289 | return; | |
c0dd20ea DJ |
15290 | |
15291 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15292 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15293 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15294 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15295 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15296 | return; | |
c0dd20ea DJ |
15297 | |
15298 | /* Find the type of the method. */ | |
0b92b5bb | 15299 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15300 | if (pfn_type == NULL |
15301 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15302 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15303 | return; |
c0dd20ea DJ |
15304 | |
15305 | /* Look for the "this" argument. */ | |
15306 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15307 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15308 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15309 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15310 | return; |
c0dd20ea | 15311 | |
09e2d7c7 | 15312 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15313 | new_type = alloc_type (objfile); |
09e2d7c7 | 15314 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15315 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15316 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15317 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15318 | } |
1168df01 | 15319 | |
2b4424c3 TT |
15320 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15321 | appropriate error checking and issuing complaints if there is a | |
15322 | problem. */ | |
15323 | ||
15324 | static ULONGEST | |
15325 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15326 | { | |
15327 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15328 | ||
15329 | if (attr == nullptr) | |
15330 | return 0; | |
15331 | ||
cd6c91b4 | 15332 | if (!attr->form_is_constant ()) |
2b4424c3 | 15333 | { |
b98664d3 | 15334 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15335 | " - DIE at %s [in module %s]"), |
15336 | sect_offset_str (die->sect_off), | |
15337 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15338 | return 0; | |
15339 | } | |
15340 | ||
15341 | ULONGEST align; | |
15342 | if (attr->form == DW_FORM_sdata) | |
15343 | { | |
15344 | LONGEST val = DW_SND (attr); | |
15345 | if (val < 0) | |
15346 | { | |
b98664d3 | 15347 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15348 | " - DIE at %s [in module %s]"), |
15349 | sect_offset_str (die->sect_off), | |
15350 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15351 | return 0; | |
15352 | } | |
15353 | align = val; | |
15354 | } | |
15355 | else | |
15356 | align = DW_UNSND (attr); | |
15357 | ||
15358 | if (align == 0) | |
15359 | { | |
b98664d3 | 15360 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15361 | " - DIE at %s [in module %s]"), |
15362 | sect_offset_str (die->sect_off), | |
15363 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15364 | return 0; | |
15365 | } | |
15366 | if ((align & (align - 1)) != 0) | |
15367 | { | |
b98664d3 | 15368 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15369 | " - DIE at %s [in module %s]"), |
15370 | sect_offset_str (die->sect_off), | |
15371 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15372 | return 0; | |
15373 | } | |
15374 | ||
15375 | return align; | |
15376 | } | |
15377 | ||
15378 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15379 | the alignment for TYPE. */ | |
15380 | ||
15381 | static void | |
15382 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15383 | struct type *type) | |
15384 | { | |
15385 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15386 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15387 | " - DIE at %s [in module %s]"), |
15388 | sect_offset_str (die->sect_off), | |
15389 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15390 | } | |
685b1105 | 15391 | |
e35000a7 TBA |
15392 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15393 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15394 | ||
15395 | static bool | |
15396 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15397 | { | |
15398 | switch (value) | |
15399 | { | |
15400 | case DW_CC_normal: | |
15401 | case DW_CC_pass_by_reference: | |
15402 | case DW_CC_pass_by_value: | |
15403 | return true; | |
15404 | ||
15405 | default: | |
15406 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15407 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15408 | return false; |
15409 | } | |
15410 | } | |
15411 | ||
d0922fcf TBA |
15412 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15413 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15414 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15415 | ||
15416 | static bool | |
15417 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15418 | { | |
15419 | switch (value) | |
15420 | { | |
15421 | case DW_CC_normal: | |
15422 | case DW_CC_program: | |
15423 | case DW_CC_nocall: | |
15424 | return true; | |
15425 | ||
15426 | case DW_CC_GNU_renesas_sh: | |
15427 | case DW_CC_GNU_borland_fastcall_i386: | |
15428 | case DW_CC_GDB_IBM_OpenCL: | |
15429 | return true; | |
15430 | ||
15431 | default: | |
15432 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15433 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15434 | return false; |
15435 | } | |
15436 | } | |
15437 | ||
c906108c | 15438 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15439 | (definition) to create a type for the structure or union. Fill in |
15440 | the type's name and general properties; the members will not be | |
83655187 DE |
15441 | processed until process_structure_scope. A symbol table entry for |
15442 | the type will also not be done until process_structure_scope (assuming | |
15443 | the type has a name). | |
c906108c | 15444 | |
c767944b DJ |
15445 | NOTE: we need to call these functions regardless of whether or not the |
15446 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15447 | structure or union. This gets the type entered into our set of |
83655187 | 15448 | user defined types. */ |
c906108c | 15449 | |
f792889a | 15450 | static struct type * |
134d01f1 | 15451 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15452 | { |
518817b3 | 15453 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15454 | struct type *type; |
15455 | struct attribute *attr; | |
15d034d0 | 15456 | const char *name; |
c906108c | 15457 | |
348e048f DE |
15458 | /* If the definition of this type lives in .debug_types, read that type. |
15459 | Don't follow DW_AT_specification though, that will take us back up | |
15460 | the chain and we want to go down. */ | |
45e58e77 | 15461 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15462 | if (attr != nullptr) |
348e048f | 15463 | { |
ac9ec31b | 15464 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15465 | |
ac9ec31b | 15466 | /* The type's CU may not be the same as CU. |
02142a6c | 15467 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15468 | return set_die_type (die, type, cu); |
15469 | } | |
15470 | ||
c0dd20ea | 15471 | type = alloc_type (objfile); |
c906108c | 15472 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15473 | |
39cbfefa DJ |
15474 | name = dwarf2_name (die, cu); |
15475 | if (name != NULL) | |
c906108c | 15476 | { |
987504bb | 15477 | if (cu->language == language_cplus |
c44af4eb TT |
15478 | || cu->language == language_d |
15479 | || cu->language == language_rust) | |
63d06c5c | 15480 | { |
15d034d0 | 15481 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15482 | |
15483 | /* dwarf2_full_name might have already finished building the DIE's | |
15484 | type. If so, there is no need to continue. */ | |
15485 | if (get_die_type (die, cu) != NULL) | |
15486 | return get_die_type (die, cu); | |
15487 | ||
e86ca25f | 15488 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15489 | } |
15490 | else | |
15491 | { | |
d8151005 DJ |
15492 | /* The name is already allocated along with this objfile, so |
15493 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15494 | TYPE_NAME (type) = name; |
63d06c5c | 15495 | } |
c906108c SS |
15496 | } |
15497 | ||
15498 | if (die->tag == DW_TAG_structure_type) | |
15499 | { | |
15500 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15501 | } | |
15502 | else if (die->tag == DW_TAG_union_type) | |
15503 | { | |
15504 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15505 | } | |
2ddeaf8a TT |
15506 | else if (die->tag == DW_TAG_variant_part) |
15507 | { | |
15508 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15509 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15510 | } | |
c906108c SS |
15511 | else |
15512 | { | |
4753d33b | 15513 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15514 | } |
15515 | ||
0cc2414c TT |
15516 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15517 | TYPE_DECLARED_CLASS (type) = 1; | |
15518 | ||
e35000a7 TBA |
15519 | /* Store the calling convention in the type if it's available in |
15520 | the die. Otherwise the calling convention remains set to | |
15521 | the default value DW_CC_normal. */ | |
15522 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15523 | if (attr != nullptr | |
15524 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15525 | { | |
15526 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15527 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15528 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15529 | } | |
15530 | ||
e142c38c | 15531 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15532 | if (attr != nullptr) |
c906108c | 15533 | { |
cd6c91b4 | 15534 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15535 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15536 | else | |
15537 | { | |
15538 | /* For the moment, dynamic type sizes are not supported | |
15539 | by GDB's struct type. The actual size is determined | |
15540 | on-demand when resolving the type of a given object, | |
15541 | so set the type's length to zero for now. Otherwise, | |
15542 | we record an expression as the length, and that expression | |
15543 | could lead to a very large value, which could eventually | |
15544 | lead to us trying to allocate that much memory when creating | |
15545 | a value of that type. */ | |
15546 | TYPE_LENGTH (type) = 0; | |
15547 | } | |
c906108c SS |
15548 | } |
15549 | else | |
15550 | { | |
15551 | TYPE_LENGTH (type) = 0; | |
15552 | } | |
15553 | ||
2b4424c3 TT |
15554 | maybe_set_alignment (cu, die, type); |
15555 | ||
5230b05a | 15556 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15557 | { |
5230b05a WT |
15558 | /* ICC<14 does not output the required DW_AT_declaration on |
15559 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15560 | TYPE_STUB (type) = 1; |
685b1105 JK |
15561 | } |
15562 | else | |
15563 | TYPE_STUB_SUPPORTED (type) = 1; | |
15564 | ||
dc718098 | 15565 | if (die_is_declaration (die, cu)) |
876cecd0 | 15566 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15567 | else if (attr == NULL && die->child == NULL |
15568 | && producer_is_realview (cu->producer)) | |
15569 | /* RealView does not output the required DW_AT_declaration | |
15570 | on incomplete types. */ | |
15571 | TYPE_STUB (type) = 1; | |
dc718098 | 15572 | |
c906108c SS |
15573 | /* We need to add the type field to the die immediately so we don't |
15574 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15575 | type within the structure itself. */ |
1c379e20 | 15576 | set_die_type (die, type, cu); |
c906108c | 15577 | |
7e314c57 JK |
15578 | /* set_die_type should be already done. */ |
15579 | set_descriptive_type (type, die, cu); | |
15580 | ||
c767944b DJ |
15581 | return type; |
15582 | } | |
15583 | ||
2ddeaf8a TT |
15584 | /* A helper for process_structure_scope that handles a single member |
15585 | DIE. */ | |
15586 | ||
15587 | static void | |
15588 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15589 | struct field_info *fi, | |
15590 | std::vector<struct symbol *> *template_args, | |
15591 | struct dwarf2_cu *cu) | |
15592 | { | |
15593 | if (child_die->tag == DW_TAG_member | |
15594 | || child_die->tag == DW_TAG_variable | |
15595 | || child_die->tag == DW_TAG_variant_part) | |
15596 | { | |
15597 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15598 | should be a DW_TAG_member that is a declaration, but | |
15599 | all versions of G++ as of this writing (so through at | |
15600 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15601 | tags for them instead. */ | |
15602 | dwarf2_add_field (fi, child_die, cu); | |
15603 | } | |
15604 | else if (child_die->tag == DW_TAG_subprogram) | |
15605 | { | |
15606 | /* Rust doesn't have member functions in the C++ sense. | |
15607 | However, it does emit ordinary functions as children | |
15608 | of a struct DIE. */ | |
15609 | if (cu->language == language_rust) | |
15610 | read_func_scope (child_die, cu); | |
15611 | else | |
15612 | { | |
15613 | /* C++ member function. */ | |
15614 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15615 | } | |
15616 | } | |
15617 | else if (child_die->tag == DW_TAG_inheritance) | |
15618 | { | |
15619 | /* C++ base class field. */ | |
15620 | dwarf2_add_field (fi, child_die, cu); | |
15621 | } | |
15622 | else if (type_can_define_types (child_die)) | |
15623 | dwarf2_add_type_defn (fi, child_die, cu); | |
15624 | else if (child_die->tag == DW_TAG_template_type_param | |
15625 | || child_die->tag == DW_TAG_template_value_param) | |
15626 | { | |
15627 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15628 | ||
15629 | if (arg != NULL) | |
15630 | template_args->push_back (arg); | |
15631 | } | |
15632 | else if (child_die->tag == DW_TAG_variant) | |
15633 | { | |
15634 | /* In a variant we want to get the discriminant and also add a | |
15635 | field for our sole member child. */ | |
15636 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15637 | ||
bde09ab7 | 15638 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
15639 | variant_child != NULL; |
15640 | variant_child = sibling_die (variant_child)) | |
15641 | { | |
15642 | if (variant_child->tag == DW_TAG_member) | |
15643 | { | |
15644 | handle_struct_member_die (variant_child, type, fi, | |
15645 | template_args, cu); | |
15646 | /* Only handle the one. */ | |
15647 | break; | |
15648 | } | |
15649 | } | |
15650 | ||
15651 | /* We don't handle this but we might as well report it if we see | |
15652 | it. */ | |
15653 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15654 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15655 | " - DIE at %s [in module %s]"), |
15656 | sect_offset_str (child_die->sect_off), | |
15657 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15658 | ||
15659 | /* The first field was just added, so we can stash the | |
15660 | discriminant there. */ | |
be2daae6 | 15661 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15662 | if (discr == NULL) |
be2daae6 | 15663 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15664 | else |
be2daae6 | 15665 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15666 | } |
15667 | } | |
15668 | ||
c767944b DJ |
15669 | /* Finish creating a structure or union type, including filling in |
15670 | its members and creating a symbol for it. */ | |
15671 | ||
15672 | static void | |
15673 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15674 | { | |
518817b3 | 15675 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15676 | struct die_info *child_die; |
c767944b DJ |
15677 | struct type *type; |
15678 | ||
15679 | type = get_die_type (die, cu); | |
15680 | if (type == NULL) | |
15681 | type = read_structure_type (die, cu); | |
15682 | ||
2ddeaf8a TT |
15683 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15684 | read the discriminant member, so we can record it later in the | |
15685 | discriminant_info. */ | |
15686 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 15687 | sect_offset discr_offset {}; |
3e1d3d8c | 15688 | bool has_template_parameters = false; |
2ddeaf8a TT |
15689 | |
15690 | if (is_variant_part) | |
15691 | { | |
15692 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15693 | if (discr == NULL) | |
15694 | { | |
15695 | /* Maybe it's a univariant form, an extension we support. | |
15696 | In this case arrange not to check the offset. */ | |
15697 | is_variant_part = false; | |
15698 | } | |
cd6c91b4 | 15699 | else if (discr->form_is_ref ()) |
2ddeaf8a TT |
15700 | { |
15701 | struct dwarf2_cu *target_cu = cu; | |
15702 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15703 | ||
15704 | discr_offset = target_die->sect_off; | |
15705 | } | |
15706 | else | |
15707 | { | |
b98664d3 | 15708 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15709 | " - DIE at %s [in module %s]"), |
15710 | sect_offset_str (die->sect_off), | |
15711 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15712 | is_variant_part = false; | |
15713 | } | |
15714 | } | |
15715 | ||
e142c38c | 15716 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15717 | { |
15718 | struct field_info fi; | |
2f4732b0 | 15719 | std::vector<struct symbol *> template_args; |
c906108c | 15720 | |
639d11d3 | 15721 | child_die = die->child; |
c906108c SS |
15722 | |
15723 | while (child_die && child_die->tag) | |
15724 | { | |
2ddeaf8a | 15725 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15726 | |
2ddeaf8a | 15727 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15728 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15729 | |
c906108c SS |
15730 | child_die = sibling_die (child_die); |
15731 | } | |
15732 | ||
34eaf542 | 15733 | /* Attach template arguments to type. */ |
2f4732b0 | 15734 | if (!template_args.empty ()) |
34eaf542 | 15735 | { |
3e1d3d8c | 15736 | has_template_parameters = true; |
34eaf542 | 15737 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15738 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15739 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15740 | = XOBNEWVEC (&objfile->objfile_obstack, |
15741 | struct symbol *, | |
15742 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15743 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15744 | template_args.data (), |
34eaf542 TT |
15745 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15746 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15747 | } |
15748 | ||
c906108c SS |
15749 | /* Attach fields and member functions to the type. */ |
15750 | if (fi.nfields) | |
e7c27a73 | 15751 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15752 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15753 | { |
e7c27a73 | 15754 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15755 | |
c5aa993b | 15756 | /* Get the type which refers to the base class (possibly this |
c906108c | 15757 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15758 | class from the DW_AT_containing_type attribute. This use of |
15759 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15760 | |
e142c38c | 15761 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15762 | { |
e7c27a73 | 15763 | struct type *t = die_containing_type (die, cu); |
c906108c | 15764 | |
ae6ae975 | 15765 | set_type_vptr_basetype (type, t); |
c906108c SS |
15766 | if (type == t) |
15767 | { | |
c906108c SS |
15768 | int i; |
15769 | ||
15770 | /* Our own class provides vtbl ptr. */ | |
15771 | for (i = TYPE_NFIELDS (t) - 1; | |
15772 | i >= TYPE_N_BASECLASSES (t); | |
15773 | --i) | |
15774 | { | |
0d5cff50 | 15775 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15776 | |
1168df01 | 15777 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15778 | { |
ae6ae975 | 15779 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15780 | break; |
15781 | } | |
15782 | } | |
15783 | ||
15784 | /* Complain if virtual function table field not found. */ | |
15785 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15786 | complaint (_("virtual function table pointer " |
3e43a32a | 15787 | "not found when defining class '%s'"), |
e86ca25f | 15788 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15789 | } |
15790 | else | |
15791 | { | |
ae6ae975 | 15792 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15793 | } |
15794 | } | |
f6235d4c | 15795 | else if (cu->producer |
61012eef | 15796 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15797 | { |
15798 | /* The IBM XLC compiler does not provide direct indication | |
15799 | of the containing type, but the vtable pointer is | |
15800 | always named __vfp. */ | |
15801 | ||
15802 | int i; | |
15803 | ||
15804 | for (i = TYPE_NFIELDS (type) - 1; | |
15805 | i >= TYPE_N_BASECLASSES (type); | |
15806 | --i) | |
15807 | { | |
15808 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15809 | { | |
ae6ae975 DE |
15810 | set_type_vptr_fieldno (type, i); |
15811 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15812 | break; |
15813 | } | |
15814 | } | |
15815 | } | |
c906108c | 15816 | } |
98751a41 JK |
15817 | |
15818 | /* Copy fi.typedef_field_list linked list elements content into the | |
15819 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15820 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15821 | { |
be2daae6 | 15822 | int count = fi.typedef_field_list.size (); |
98751a41 | 15823 | |
a0d7a4ff | 15824 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15825 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15826 | = ((struct decl_field *) |
be2daae6 TT |
15827 | TYPE_ALLOC (type, |
15828 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15829 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15830 | |
be2daae6 TT |
15831 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15832 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15833 | } |
c767944b | 15834 | |
883fd55a KS |
15835 | /* Copy fi.nested_types_list linked list elements content into the |
15836 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15837 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15838 | { |
be2daae6 | 15839 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15840 | |
15841 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15842 | TYPE_NESTED_TYPES_ARRAY (type) | |
15843 | = ((struct decl_field *) | |
be2daae6 TT |
15844 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15845 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15846 | |
be2daae6 TT |
15847 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15848 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15849 | } |
c906108c | 15850 | } |
63d06c5c | 15851 | |
bb5ed363 | 15852 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15853 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15854 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15855 | |
90aeadfc DC |
15856 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15857 | snapshots) has been known to create a die giving a declaration | |
15858 | for a class that has, as a child, a die giving a definition for a | |
15859 | nested class. So we have to process our children even if the | |
15860 | current die is a declaration. Normally, of course, a declaration | |
15861 | won't have any children at all. */ | |
134d01f1 | 15862 | |
ca040673 DE |
15863 | child_die = die->child; |
15864 | ||
90aeadfc DC |
15865 | while (child_die != NULL && child_die->tag) |
15866 | { | |
15867 | if (child_die->tag == DW_TAG_member | |
15868 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15869 | || child_die->tag == DW_TAG_inheritance |
15870 | || child_die->tag == DW_TAG_template_value_param | |
15871 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15872 | { |
90aeadfc | 15873 | /* Do nothing. */ |
134d01f1 | 15874 | } |
90aeadfc DC |
15875 | else |
15876 | process_die (child_die, cu); | |
134d01f1 | 15877 | |
90aeadfc | 15878 | child_die = sibling_die (child_die); |
134d01f1 DJ |
15879 | } |
15880 | ||
fa4028e9 JB |
15881 | /* Do not consider external references. According to the DWARF standard, |
15882 | these DIEs are identified by the fact that they have no byte_size | |
15883 | attribute, and a declaration attribute. */ | |
15884 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15885 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15886 | { |
15887 | struct symbol *sym = new_symbol (die, type, cu); | |
15888 | ||
15889 | if (has_template_parameters) | |
15890 | { | |
a776957c TT |
15891 | struct symtab *symtab; |
15892 | if (sym != nullptr) | |
15893 | symtab = symbol_symtab (sym); | |
15894 | else if (cu->line_header != nullptr) | |
15895 | { | |
15896 | /* Any related symtab will do. */ | |
15897 | symtab | |
7ba99d21 | 15898 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15899 | } |
15900 | else | |
15901 | { | |
15902 | symtab = nullptr; | |
15903 | complaint (_("could not find suitable " | |
15904 | "symtab for template parameter" | |
15905 | " - DIE at %s [in module %s]"), | |
15906 | sect_offset_str (die->sect_off), | |
15907 | objfile_name (objfile)); | |
15908 | } | |
15909 | ||
15910 | if (symtab != nullptr) | |
15911 | { | |
15912 | /* Make sure that the symtab is set on the new symbols. | |
15913 | Even though they don't appear in this symtab directly, | |
15914 | other parts of gdb assume that symbols do, and this is | |
15915 | reasonably true. */ | |
15916 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15917 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15918 | } | |
3e1d3d8c TT |
15919 | } |
15920 | } | |
134d01f1 DJ |
15921 | } |
15922 | ||
55426c9d JB |
15923 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15924 | update TYPE using some information only available in DIE's children. */ | |
15925 | ||
15926 | static void | |
15927 | update_enumeration_type_from_children (struct die_info *die, | |
15928 | struct type *type, | |
15929 | struct dwarf2_cu *cu) | |
15930 | { | |
60f7655a | 15931 | struct die_info *child_die; |
55426c9d JB |
15932 | int unsigned_enum = 1; |
15933 | int flag_enum = 1; | |
15934 | ULONGEST mask = 0; | |
55426c9d | 15935 | |
8268c778 | 15936 | auto_obstack obstack; |
55426c9d | 15937 | |
60f7655a DE |
15938 | for (child_die = die->child; |
15939 | child_die != NULL && child_die->tag; | |
15940 | child_die = sibling_die (child_die)) | |
55426c9d JB |
15941 | { |
15942 | struct attribute *attr; | |
15943 | LONGEST value; | |
15944 | const gdb_byte *bytes; | |
15945 | struct dwarf2_locexpr_baton *baton; | |
15946 | const char *name; | |
60f7655a | 15947 | |
55426c9d JB |
15948 | if (child_die->tag != DW_TAG_enumerator) |
15949 | continue; | |
15950 | ||
15951 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15952 | if (attr == NULL) | |
15953 | continue; | |
15954 | ||
15955 | name = dwarf2_name (child_die, cu); | |
15956 | if (name == NULL) | |
15957 | name = "<anonymous enumerator>"; | |
15958 | ||
15959 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15960 | &value, &bytes, &baton); | |
15961 | if (value < 0) | |
15962 | { | |
15963 | unsigned_enum = 0; | |
15964 | flag_enum = 0; | |
15965 | } | |
15966 | else if ((mask & value) != 0) | |
15967 | flag_enum = 0; | |
15968 | else | |
15969 | mask |= value; | |
15970 | ||
15971 | /* If we already know that the enum type is neither unsigned, nor | |
15972 | a flag type, no need to look at the rest of the enumerates. */ | |
15973 | if (!unsigned_enum && !flag_enum) | |
15974 | break; | |
55426c9d JB |
15975 | } |
15976 | ||
15977 | if (unsigned_enum) | |
15978 | TYPE_UNSIGNED (type) = 1; | |
15979 | if (flag_enum) | |
15980 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15981 | } |
15982 | ||
134d01f1 DJ |
15983 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15984 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15985 | |
f792889a | 15986 | static struct type * |
134d01f1 | 15987 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15988 | { |
518817b3 | 15989 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15990 | struct type *type; |
c906108c | 15991 | struct attribute *attr; |
0114d602 | 15992 | const char *name; |
134d01f1 | 15993 | |
348e048f DE |
15994 | /* If the definition of this type lives in .debug_types, read that type. |
15995 | Don't follow DW_AT_specification though, that will take us back up | |
15996 | the chain and we want to go down. */ | |
45e58e77 | 15997 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15998 | if (attr != nullptr) |
348e048f | 15999 | { |
ac9ec31b | 16000 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16001 | |
ac9ec31b | 16002 | /* The type's CU may not be the same as CU. |
02142a6c | 16003 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16004 | return set_die_type (die, type, cu); |
16005 | } | |
16006 | ||
c906108c SS |
16007 | type = alloc_type (objfile); |
16008 | ||
16009 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16010 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16011 | if (name != NULL) |
e86ca25f | 16012 | TYPE_NAME (type) = name; |
c906108c | 16013 | |
0626fc76 TT |
16014 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16015 | if (attr != NULL) | |
16016 | { | |
16017 | struct type *underlying_type = die_type (die, cu); | |
16018 | ||
16019 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16020 | } | |
16021 | ||
e142c38c | 16022 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16023 | if (attr != nullptr) |
c906108c SS |
16024 | { |
16025 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16026 | } | |
16027 | else | |
16028 | { | |
16029 | TYPE_LENGTH (type) = 0; | |
16030 | } | |
16031 | ||
2b4424c3 TT |
16032 | maybe_set_alignment (cu, die, type); |
16033 | ||
137033e9 JB |
16034 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16035 | declared as private in the package spec, and then defined only | |
16036 | inside the package body. Such types are known as Taft Amendment | |
16037 | Types. When another package uses such a type, an incomplete DIE | |
16038 | may be generated by the compiler. */ | |
02eb380e | 16039 | if (die_is_declaration (die, cu)) |
876cecd0 | 16040 | TYPE_STUB (type) = 1; |
02eb380e | 16041 | |
0626fc76 TT |
16042 | /* Finish the creation of this type by using the enum's children. |
16043 | We must call this even when the underlying type has been provided | |
16044 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16045 | update_enumeration_type_from_children (die, type, cu); |
16046 | ||
0626fc76 TT |
16047 | /* If this type has an underlying type that is not a stub, then we |
16048 | may use its attributes. We always use the "unsigned" attribute | |
16049 | in this situation, because ordinarily we guess whether the type | |
16050 | is unsigned -- but the guess can be wrong and the underlying type | |
16051 | can tell us the reality. However, we defer to a local size | |
16052 | attribute if one exists, because this lets the compiler override | |
16053 | the underlying type if needed. */ | |
16054 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16055 | { | |
16056 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16057 | if (TYPE_LENGTH (type) == 0) | |
16058 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16059 | if (TYPE_RAW_ALIGN (type) == 0 |
16060 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16061 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16062 | } |
16063 | ||
3d567982 TT |
16064 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16065 | ||
f792889a | 16066 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16067 | } |
16068 | ||
16069 | /* Given a pointer to a die which begins an enumeration, process all | |
16070 | the dies that define the members of the enumeration, and create the | |
16071 | symbol for the enumeration type. | |
16072 | ||
16073 | NOTE: We reverse the order of the element list. */ | |
16074 | ||
16075 | static void | |
16076 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16077 | { | |
f792889a | 16078 | struct type *this_type; |
134d01f1 | 16079 | |
f792889a DJ |
16080 | this_type = get_die_type (die, cu); |
16081 | if (this_type == NULL) | |
16082 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16083 | |
639d11d3 | 16084 | if (die->child != NULL) |
c906108c | 16085 | { |
9dc481d3 DE |
16086 | struct die_info *child_die; |
16087 | struct symbol *sym; | |
43816ebc | 16088 | std::vector<struct field> fields; |
15d034d0 | 16089 | const char *name; |
9dc481d3 | 16090 | |
639d11d3 | 16091 | child_die = die->child; |
c906108c SS |
16092 | while (child_die && child_die->tag) |
16093 | { | |
16094 | if (child_die->tag != DW_TAG_enumerator) | |
16095 | { | |
e7c27a73 | 16096 | process_die (child_die, cu); |
c906108c SS |
16097 | } |
16098 | else | |
16099 | { | |
39cbfefa DJ |
16100 | name = dwarf2_name (child_die, cu); |
16101 | if (name) | |
c906108c | 16102 | { |
f792889a | 16103 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 16104 | |
43816ebc TT |
16105 | fields.emplace_back (); |
16106 | struct field &field = fields.back (); | |
c906108c | 16107 | |
43816ebc TT |
16108 | FIELD_NAME (field) = sym->linkage_name (); |
16109 | FIELD_TYPE (field) = NULL; | |
16110 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
16111 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
16112 | } |
16113 | } | |
16114 | ||
16115 | child_die = sibling_die (child_die); | |
16116 | } | |
16117 | ||
43816ebc | 16118 | if (!fields.empty ()) |
c906108c | 16119 | { |
43816ebc | 16120 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 16121 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
16122 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
16123 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
16124 | sizeof (struct field) * fields.size ()); | |
c906108c | 16125 | } |
c906108c | 16126 | } |
134d01f1 | 16127 | |
6c83ed52 TT |
16128 | /* If we are reading an enum from a .debug_types unit, and the enum |
16129 | is a declaration, and the enum is not the signatured type in the | |
16130 | unit, then we do not want to add a symbol for it. Adding a | |
16131 | symbol would in some cases obscure the true definition of the | |
16132 | enum, giving users an incomplete type when the definition is | |
16133 | actually available. Note that we do not want to do this for all | |
16134 | enums which are just declarations, because C++0x allows forward | |
16135 | enum declarations. */ | |
3019eac3 | 16136 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16137 | && die_is_declaration (die, cu)) |
16138 | { | |
52dc124a | 16139 | struct signatured_type *sig_type; |
6c83ed52 | 16140 | |
c0f78cd4 | 16141 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16142 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16143 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16144 | return; |
16145 | } | |
16146 | ||
f792889a | 16147 | new_symbol (die, this_type, cu); |
c906108c SS |
16148 | } |
16149 | ||
16150 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16151 | the DIE's type field. For now, this only handles one dimensional | |
16152 | arrays. */ | |
16153 | ||
f792889a | 16154 | static struct type * |
e7c27a73 | 16155 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16156 | { |
518817b3 | 16157 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16158 | struct die_info *child_die; |
7e314c57 | 16159 | struct type *type; |
c906108c | 16160 | struct type *element_type, *range_type, *index_type; |
c906108c | 16161 | struct attribute *attr; |
15d034d0 | 16162 | const char *name; |
a405673c | 16163 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16164 | unsigned int bit_stride = 0; |
c906108c | 16165 | |
e7c27a73 | 16166 | element_type = die_type (die, cu); |
c906108c | 16167 | |
7e314c57 JK |
16168 | /* The die_type call above may have already set the type for this DIE. */ |
16169 | type = get_die_type (die, cu); | |
16170 | if (type) | |
16171 | return type; | |
16172 | ||
dc53a7ad JB |
16173 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16174 | if (attr != NULL) | |
a405673c JB |
16175 | { |
16176 | int stride_ok; | |
9a49df9d AB |
16177 | struct type *prop_type |
16178 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
a405673c JB |
16179 | |
16180 | byte_stride_prop | |
16181 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16182 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16183 | prop_type); | |
a405673c JB |
16184 | if (!stride_ok) |
16185 | { | |
b98664d3 | 16186 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16187 | " - DIE at %s [in module %s]"), |
16188 | sect_offset_str (die->sect_off), | |
518817b3 | 16189 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16190 | /* Ignore this attribute. We will likely not be able to print |
16191 | arrays of this type correctly, but there is little we can do | |
16192 | to help if we cannot read the attribute's value. */ | |
16193 | byte_stride_prop = NULL; | |
16194 | } | |
16195 | } | |
dc53a7ad JB |
16196 | |
16197 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16198 | if (attr != NULL) | |
16199 | bit_stride = DW_UNSND (attr); | |
16200 | ||
c906108c SS |
16201 | /* Irix 6.2 native cc creates array types without children for |
16202 | arrays with unspecified length. */ | |
639d11d3 | 16203 | if (die->child == NULL) |
c906108c | 16204 | { |
46bf5051 | 16205 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16206 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16207 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16208 | byte_stride_prop, bit_stride); |
f792889a | 16209 | return set_die_type (die, type, cu); |
c906108c SS |
16210 | } |
16211 | ||
791afaa2 | 16212 | std::vector<struct type *> range_types; |
639d11d3 | 16213 | child_die = die->child; |
c906108c SS |
16214 | while (child_die && child_die->tag) |
16215 | { | |
16216 | if (child_die->tag == DW_TAG_subrange_type) | |
16217 | { | |
f792889a | 16218 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16219 | |
f792889a | 16220 | if (child_type != NULL) |
a02abb62 | 16221 | { |
0963b4bd MS |
16222 | /* The range type was succesfully read. Save it for the |
16223 | array type creation. */ | |
791afaa2 | 16224 | range_types.push_back (child_type); |
a02abb62 | 16225 | } |
c906108c SS |
16226 | } |
16227 | child_die = sibling_die (child_die); | |
16228 | } | |
16229 | ||
16230 | /* Dwarf2 dimensions are output from left to right, create the | |
16231 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16232 | |
c906108c | 16233 | type = element_type; |
7ca2d3a3 DL |
16234 | |
16235 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16236 | { | |
16237 | int i = 0; | |
9a619af0 | 16238 | |
791afaa2 | 16239 | while (i < range_types.size ()) |
dc53a7ad | 16240 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16241 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16242 | } |
16243 | else | |
16244 | { | |
791afaa2 | 16245 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16246 | while (ndim-- > 0) |
dc53a7ad | 16247 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16248 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16249 | } |
c906108c | 16250 | |
f5f8a009 EZ |
16251 | /* Understand Dwarf2 support for vector types (like they occur on |
16252 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16253 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16254 | custom vendor extension. The main difference between a regular | |
16255 | array and the vector variant is that vectors are passed by value | |
16256 | to functions. */ | |
e142c38c | 16257 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16258 | if (attr != nullptr) |
ea37ba09 | 16259 | make_vector_type (type); |
f5f8a009 | 16260 | |
dbc98a8b KW |
16261 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16262 | implementation may choose to implement triple vectors using this | |
16263 | attribute. */ | |
16264 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16265 | if (attr != nullptr) |
dbc98a8b KW |
16266 | { |
16267 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16268 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16269 | else | |
b98664d3 | 16270 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16271 | "than the total size of elements")); |
dbc98a8b KW |
16272 | } |
16273 | ||
39cbfefa DJ |
16274 | name = dwarf2_name (die, cu); |
16275 | if (name) | |
16276 | TYPE_NAME (type) = name; | |
6e70227d | 16277 | |
2b4424c3 TT |
16278 | maybe_set_alignment (cu, die, type); |
16279 | ||
0963b4bd | 16280 | /* Install the type in the die. */ |
7e314c57 JK |
16281 | set_die_type (die, type, cu); |
16282 | ||
16283 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16284 | set_descriptive_type (type, die, cu); |
16285 | ||
7e314c57 | 16286 | return type; |
c906108c SS |
16287 | } |
16288 | ||
7ca2d3a3 | 16289 | static enum dwarf_array_dim_ordering |
6e70227d | 16290 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16291 | { |
16292 | struct attribute *attr; | |
16293 | ||
16294 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16295 | ||
435d3d88 | 16296 | if (attr != nullptr) |
aead7601 | 16297 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16298 | |
0963b4bd MS |
16299 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16300 | opposite order to the dwarf2 specification, but data is still | |
16301 | laid out as per normal fortran. | |
7ca2d3a3 | 16302 | |
0963b4bd MS |
16303 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16304 | version checking. */ | |
7ca2d3a3 | 16305 | |
905e0470 PM |
16306 | if (cu->language == language_fortran |
16307 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16308 | { |
16309 | return DW_ORD_row_major; | |
16310 | } | |
16311 | ||
6e70227d | 16312 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16313 | { |
16314 | case array_column_major: | |
16315 | return DW_ORD_col_major; | |
16316 | case array_row_major: | |
16317 | default: | |
16318 | return DW_ORD_row_major; | |
16319 | }; | |
16320 | } | |
16321 | ||
72019c9c | 16322 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16323 | the DIE's type field. */ |
72019c9c | 16324 | |
f792889a | 16325 | static struct type * |
72019c9c GM |
16326 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16327 | { | |
7e314c57 JK |
16328 | struct type *domain_type, *set_type; |
16329 | struct attribute *attr; | |
f792889a | 16330 | |
7e314c57 JK |
16331 | domain_type = die_type (die, cu); |
16332 | ||
16333 | /* The die_type call above may have already set the type for this DIE. */ | |
16334 | set_type = get_die_type (die, cu); | |
16335 | if (set_type) | |
16336 | return set_type; | |
16337 | ||
16338 | set_type = create_set_type (NULL, domain_type); | |
16339 | ||
16340 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16341 | if (attr != nullptr) |
d09039dd | 16342 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16343 | |
2b4424c3 TT |
16344 | maybe_set_alignment (cu, die, set_type); |
16345 | ||
f792889a | 16346 | return set_die_type (die, set_type, cu); |
72019c9c | 16347 | } |
7ca2d3a3 | 16348 | |
0971de02 TT |
16349 | /* A helper for read_common_block that creates a locexpr baton. |
16350 | SYM is the symbol which we are marking as computed. | |
16351 | COMMON_DIE is the DIE for the common block. | |
16352 | COMMON_LOC is the location expression attribute for the common | |
16353 | block itself. | |
16354 | MEMBER_LOC is the location expression attribute for the particular | |
16355 | member of the common block that we are processing. | |
16356 | CU is the CU from which the above come. */ | |
16357 | ||
16358 | static void | |
16359 | mark_common_block_symbol_computed (struct symbol *sym, | |
16360 | struct die_info *common_die, | |
16361 | struct attribute *common_loc, | |
16362 | struct attribute *member_loc, | |
16363 | struct dwarf2_cu *cu) | |
16364 | { | |
518817b3 SM |
16365 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16366 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16367 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16368 | struct dwarf2_locexpr_baton *baton; | |
16369 | gdb_byte *ptr; | |
16370 | unsigned int cu_off; | |
16371 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16372 | LONGEST offset = 0; | |
16373 | ||
16374 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16375 | gdb_assert (common_loc->form_is_block ()); |
16376 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16377 | || member_loc->form_is_constant ()); |
0971de02 | 16378 | |
8d749320 | 16379 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16380 | baton->per_cu = cu->per_cu; |
16381 | gdb_assert (baton->per_cu); | |
16382 | ||
16383 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16384 | ||
cd6c91b4 | 16385 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16386 | { |
16387 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16388 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16389 | } | |
16390 | else | |
16391 | baton->size += DW_BLOCK (member_loc)->size; | |
16392 | ||
224c3ddb | 16393 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16394 | baton->data = ptr; |
16395 | ||
16396 | *ptr++ = DW_OP_call4; | |
9c541725 | 16397 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16398 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16399 | ptr += 4; | |
16400 | ||
cd6c91b4 | 16401 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16402 | { |
16403 | *ptr++ = DW_OP_addr; | |
16404 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16405 | ptr += cu->header.addr_size; | |
16406 | } | |
16407 | else | |
16408 | { | |
16409 | /* We have to copy the data here, because DW_OP_call4 will only | |
16410 | use a DW_AT_location attribute. */ | |
16411 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16412 | ptr += DW_BLOCK (member_loc)->size; | |
16413 | } | |
16414 | ||
16415 | *ptr++ = DW_OP_plus; | |
16416 | gdb_assert (ptr - baton->data == baton->size); | |
16417 | ||
0971de02 | 16418 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16419 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16420 | } |
16421 | ||
4357ac6c TT |
16422 | /* Create appropriate locally-scoped variables for all the |
16423 | DW_TAG_common_block entries. Also create a struct common_block | |
16424 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16425 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16426 | variable names. */ |
c906108c SS |
16427 | |
16428 | static void | |
e7c27a73 | 16429 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16430 | { |
0971de02 TT |
16431 | struct attribute *attr; |
16432 | ||
16433 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16434 | if (attr != nullptr) |
0971de02 TT |
16435 | { |
16436 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16437 | if (attr->form_is_block ()) |
0971de02 TT |
16438 | { |
16439 | /* Ok. */ | |
16440 | } | |
cd6c91b4 | 16441 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16442 | { |
16443 | dwarf2_complex_location_expr_complaint (); | |
16444 | attr = NULL; | |
16445 | } | |
16446 | else | |
16447 | { | |
16448 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16449 | "common block member"); | |
16450 | attr = NULL; | |
16451 | } | |
16452 | } | |
16453 | ||
639d11d3 | 16454 | if (die->child != NULL) |
c906108c | 16455 | { |
518817b3 | 16456 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16457 | struct die_info *child_die; |
16458 | size_t n_entries = 0, size; | |
16459 | struct common_block *common_block; | |
16460 | struct symbol *sym; | |
74ac6d43 | 16461 | |
4357ac6c TT |
16462 | for (child_die = die->child; |
16463 | child_die && child_die->tag; | |
16464 | child_die = sibling_die (child_die)) | |
16465 | ++n_entries; | |
16466 | ||
16467 | size = (sizeof (struct common_block) | |
16468 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16469 | common_block |
16470 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16471 | size); | |
4357ac6c TT |
16472 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16473 | common_block->n_entries = 0; | |
16474 | ||
16475 | for (child_die = die->child; | |
16476 | child_die && child_die->tag; | |
16477 | child_die = sibling_die (child_die)) | |
16478 | { | |
16479 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16480 | symbol scope. */ | |
e7c27a73 | 16481 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16482 | if (sym != NULL) |
16483 | { | |
16484 | struct attribute *member_loc; | |
16485 | ||
16486 | common_block->contents[common_block->n_entries++] = sym; | |
16487 | ||
16488 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16489 | cu); | |
16490 | if (member_loc) | |
16491 | { | |
16492 | /* GDB has handled this for a long time, but it is | |
16493 | not specified by DWARF. It seems to have been | |
16494 | emitted by gfortran at least as recently as: | |
16495 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16496 | complaint (_("Variable in common block has " |
0971de02 | 16497 | "DW_AT_data_member_location " |
9d8780f0 SM |
16498 | "- DIE at %s [in module %s]"), |
16499 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16500 | objfile_name (objfile)); |
0971de02 | 16501 | |
cd6c91b4 | 16502 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16503 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16504 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16505 | || member_loc->form_is_block ()) |
0971de02 | 16506 | { |
435d3d88 | 16507 | if (attr != nullptr) |
0971de02 TT |
16508 | mark_common_block_symbol_computed (sym, die, attr, |
16509 | member_loc, cu); | |
16510 | } | |
16511 | else | |
16512 | dwarf2_complex_location_expr_complaint (); | |
16513 | } | |
16514 | } | |
c906108c | 16515 | } |
4357ac6c TT |
16516 | |
16517 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16518 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16519 | } |
16520 | } | |
16521 | ||
0114d602 | 16522 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16523 | |
0114d602 DJ |
16524 | static struct type * |
16525 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16526 | { |
518817b3 | 16527 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16528 | const char *previous_prefix, *name; |
9219021c | 16529 | int is_anonymous; |
0114d602 DJ |
16530 | struct type *type; |
16531 | ||
16532 | /* For extensions, reuse the type of the original namespace. */ | |
16533 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16534 | { | |
16535 | struct die_info *ext_die; | |
16536 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16537 | |
0114d602 DJ |
16538 | ext_die = dwarf2_extension (die, &ext_cu); |
16539 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16540 | |
16541 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16542 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16543 | return set_die_type (die, type, cu); |
16544 | } | |
9219021c | 16545 | |
e142c38c | 16546 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16547 | |
16548 | /* Now build the name of the current namespace. */ | |
16549 | ||
0114d602 DJ |
16550 | previous_prefix = determine_prefix (die, cu); |
16551 | if (previous_prefix[0] != '\0') | |
16552 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16553 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16554 | |
16555 | /* Create the type. */ | |
19f392bc | 16556 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16557 | |
60531b24 | 16558 | return set_die_type (die, type, cu); |
0114d602 DJ |
16559 | } |
16560 | ||
22cee43f | 16561 | /* Read a namespace scope. */ |
0114d602 DJ |
16562 | |
16563 | static void | |
16564 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16565 | { | |
518817b3 | 16566 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16567 | int is_anonymous; |
9219021c | 16568 | |
5c4e30ca DC |
16569 | /* Add a symbol associated to this if we haven't seen the namespace |
16570 | before. Also, add a using directive if it's an anonymous | |
16571 | namespace. */ | |
9219021c | 16572 | |
f2f0e013 | 16573 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16574 | { |
16575 | struct type *type; | |
16576 | ||
0114d602 | 16577 | type = read_type_die (die, cu); |
e7c27a73 | 16578 | new_symbol (die, type, cu); |
5c4e30ca | 16579 | |
e8e80198 | 16580 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16581 | if (is_anonymous) |
0114d602 DJ |
16582 | { |
16583 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16584 | |
eb1e02fd | 16585 | std::vector<const char *> excludes; |
804d2729 | 16586 | add_using_directive (using_directives (cu), |
22cee43f | 16587 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16588 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16589 | } |
5c4e30ca | 16590 | } |
9219021c | 16591 | |
639d11d3 | 16592 | if (die->child != NULL) |
d9fa45fe | 16593 | { |
639d11d3 | 16594 | struct die_info *child_die = die->child; |
6e70227d | 16595 | |
d9fa45fe DC |
16596 | while (child_die && child_die->tag) |
16597 | { | |
e7c27a73 | 16598 | process_die (child_die, cu); |
d9fa45fe DC |
16599 | child_die = sibling_die (child_die); |
16600 | } | |
16601 | } | |
38d518c9 EZ |
16602 | } |
16603 | ||
f55ee35c JK |
16604 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16605 | imported module. Still we need that type as local Fortran "use ... only" | |
16606 | declaration imports depend on the created type in determine_prefix. */ | |
16607 | ||
16608 | static struct type * | |
16609 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16610 | { | |
518817b3 | 16611 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16612 | const char *module_name; |
f55ee35c JK |
16613 | struct type *type; |
16614 | ||
16615 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16616 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16617 | |
f55ee35c JK |
16618 | return set_die_type (die, type, cu); |
16619 | } | |
16620 | ||
5d7cb8df JK |
16621 | /* Read a Fortran module. */ |
16622 | ||
16623 | static void | |
16624 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16625 | { | |
16626 | struct die_info *child_die = die->child; | |
530e8392 KB |
16627 | struct type *type; |
16628 | ||
16629 | type = read_type_die (die, cu); | |
16630 | new_symbol (die, type, cu); | |
5d7cb8df | 16631 | |
5d7cb8df JK |
16632 | while (child_die && child_die->tag) |
16633 | { | |
16634 | process_die (child_die, cu); | |
16635 | child_die = sibling_die (child_die); | |
16636 | } | |
16637 | } | |
16638 | ||
38d518c9 EZ |
16639 | /* Return the name of the namespace represented by DIE. Set |
16640 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16641 | namespace. */ | |
16642 | ||
16643 | static const char * | |
e142c38c | 16644 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16645 | { |
16646 | struct die_info *current_die; | |
16647 | const char *name = NULL; | |
16648 | ||
16649 | /* Loop through the extensions until we find a name. */ | |
16650 | ||
16651 | for (current_die = die; | |
16652 | current_die != NULL; | |
f2f0e013 | 16653 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16654 | { |
96553a0c DE |
16655 | /* We don't use dwarf2_name here so that we can detect the absence |
16656 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16657 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16658 | |
38d518c9 EZ |
16659 | if (name != NULL) |
16660 | break; | |
16661 | } | |
16662 | ||
16663 | /* Is it an anonymous namespace? */ | |
16664 | ||
16665 | *is_anonymous = (name == NULL); | |
16666 | if (*is_anonymous) | |
2b1dbab0 | 16667 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16668 | |
16669 | return name; | |
d9fa45fe DC |
16670 | } |
16671 | ||
c906108c SS |
16672 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16673 | the user defined type vector. */ | |
16674 | ||
f792889a | 16675 | static struct type * |
e7c27a73 | 16676 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16677 | { |
518817b3 SM |
16678 | struct gdbarch *gdbarch |
16679 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16680 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16681 | struct type *type; |
8b2dbe47 KB |
16682 | struct attribute *attr_byte_size; |
16683 | struct attribute *attr_address_class; | |
16684 | int byte_size, addr_class; | |
7e314c57 JK |
16685 | struct type *target_type; |
16686 | ||
16687 | target_type = die_type (die, cu); | |
c906108c | 16688 | |
7e314c57 JK |
16689 | /* The die_type call above may have already set the type for this DIE. */ |
16690 | type = get_die_type (die, cu); | |
16691 | if (type) | |
16692 | return type; | |
16693 | ||
16694 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16695 | |
e142c38c | 16696 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16697 | if (attr_byte_size) |
16698 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16699 | else |
8b2dbe47 KB |
16700 | byte_size = cu_header->addr_size; |
16701 | ||
e142c38c | 16702 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16703 | if (attr_address_class) |
16704 | addr_class = DW_UNSND (attr_address_class); | |
16705 | else | |
16706 | addr_class = DW_ADDR_none; | |
16707 | ||
2b4424c3 TT |
16708 | ULONGEST alignment = get_alignment (cu, die); |
16709 | ||
16710 | /* If the pointer size, alignment, or address class is different | |
16711 | than the default, create a type variant marked as such and set | |
16712 | the length accordingly. */ | |
16713 | if (TYPE_LENGTH (type) != byte_size | |
16714 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16715 | && alignment != TYPE_RAW_ALIGN (type)) | |
16716 | || addr_class != DW_ADDR_none) | |
c906108c | 16717 | { |
5e2b427d | 16718 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16719 | { |
16720 | int type_flags; | |
16721 | ||
849957d9 | 16722 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16723 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16724 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16725 | == 0); | |
8b2dbe47 KB |
16726 | type = make_type_with_address_space (type, type_flags); |
16727 | } | |
16728 | else if (TYPE_LENGTH (type) != byte_size) | |
16729 | { | |
b98664d3 | 16730 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16731 | } |
2b4424c3 TT |
16732 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16733 | { | |
b98664d3 | 16734 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16735 | " - DIE at %s [in module %s]"), |
16736 | sect_offset_str (die->sect_off), | |
16737 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16738 | } | |
6e70227d | 16739 | else |
9a619af0 MS |
16740 | { |
16741 | /* Should we also complain about unhandled address classes? */ | |
16742 | } | |
c906108c | 16743 | } |
8b2dbe47 KB |
16744 | |
16745 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16746 | set_type_align (type, alignment); |
f792889a | 16747 | return set_die_type (die, type, cu); |
c906108c SS |
16748 | } |
16749 | ||
16750 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16751 | the user defined type vector. */ | |
16752 | ||
f792889a | 16753 | static struct type * |
e7c27a73 | 16754 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16755 | { |
16756 | struct type *type; | |
16757 | struct type *to_type; | |
16758 | struct type *domain; | |
16759 | ||
e7c27a73 DJ |
16760 | to_type = die_type (die, cu); |
16761 | domain = die_containing_type (die, cu); | |
0d5de010 | 16762 | |
7e314c57 JK |
16763 | /* The calls above may have already set the type for this DIE. */ |
16764 | type = get_die_type (die, cu); | |
16765 | if (type) | |
16766 | return type; | |
16767 | ||
0d5de010 DJ |
16768 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16769 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16770 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16771 | { | |
518817b3 SM |
16772 | struct type *new_type |
16773 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16774 | |
16775 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16776 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16777 | TYPE_VARARGS (to_type)); | |
16778 | type = lookup_methodptr_type (new_type); | |
16779 | } | |
0d5de010 DJ |
16780 | else |
16781 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16782 | |
f792889a | 16783 | return set_die_type (die, type, cu); |
c906108c SS |
16784 | } |
16785 | ||
4297a3f0 | 16786 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16787 | the user defined type vector. */ |
16788 | ||
f792889a | 16789 | static struct type * |
4297a3f0 AV |
16790 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16791 | enum type_code refcode) | |
c906108c | 16792 | { |
e7c27a73 | 16793 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16794 | struct type *type, *target_type; |
c906108c SS |
16795 | struct attribute *attr; |
16796 | ||
4297a3f0 AV |
16797 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16798 | ||
7e314c57 JK |
16799 | target_type = die_type (die, cu); |
16800 | ||
16801 | /* The die_type call above may have already set the type for this DIE. */ | |
16802 | type = get_die_type (die, cu); | |
16803 | if (type) | |
16804 | return type; | |
16805 | ||
4297a3f0 | 16806 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16807 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16808 | if (attr != nullptr) |
c906108c SS |
16809 | { |
16810 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16811 | } | |
16812 | else | |
16813 | { | |
107d2387 | 16814 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16815 | } |
2b4424c3 | 16816 | maybe_set_alignment (cu, die, type); |
f792889a | 16817 | return set_die_type (die, type, cu); |
c906108c SS |
16818 | } |
16819 | ||
cf363f18 MW |
16820 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16821 | outputs DWARF type qualifiers that apply to an array, not the | |
16822 | element type. But GDB relies on the array element type to carry | |
16823 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16824 | specification. */ | |
16825 | ||
16826 | static struct type * | |
16827 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16828 | struct type *base_type, int cnst, int voltl) | |
16829 | { | |
16830 | struct type *el_type, *inner_array; | |
16831 | ||
16832 | base_type = copy_type (base_type); | |
16833 | inner_array = base_type; | |
16834 | ||
16835 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16836 | { | |
16837 | TYPE_TARGET_TYPE (inner_array) = | |
16838 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16839 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16840 | } | |
16841 | ||
16842 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16843 | cnst |= TYPE_CONST (el_type); | |
16844 | voltl |= TYPE_VOLATILE (el_type); | |
16845 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16846 | ||
16847 | return set_die_type (die, base_type, cu); | |
16848 | } | |
16849 | ||
f792889a | 16850 | static struct type * |
e7c27a73 | 16851 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16852 | { |
f792889a | 16853 | struct type *base_type, *cv_type; |
c906108c | 16854 | |
e7c27a73 | 16855 | base_type = die_type (die, cu); |
7e314c57 JK |
16856 | |
16857 | /* The die_type call above may have already set the type for this DIE. */ | |
16858 | cv_type = get_die_type (die, cu); | |
16859 | if (cv_type) | |
16860 | return cv_type; | |
16861 | ||
2f608a3a KW |
16862 | /* In case the const qualifier is applied to an array type, the element type |
16863 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16864 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16865 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16866 | |
f792889a DJ |
16867 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16868 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16869 | } |
16870 | ||
f792889a | 16871 | static struct type * |
e7c27a73 | 16872 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16873 | { |
f792889a | 16874 | struct type *base_type, *cv_type; |
c906108c | 16875 | |
e7c27a73 | 16876 | base_type = die_type (die, cu); |
7e314c57 JK |
16877 | |
16878 | /* The die_type call above may have already set the type for this DIE. */ | |
16879 | cv_type = get_die_type (die, cu); | |
16880 | if (cv_type) | |
16881 | return cv_type; | |
16882 | ||
cf363f18 MW |
16883 | /* In case the volatile qualifier is applied to an array type, the |
16884 | element type is so qualified, not the array type (section 6.7.3 | |
16885 | of C99). */ | |
16886 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16887 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16888 | ||
f792889a DJ |
16889 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16890 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16891 | } |
16892 | ||
06d66ee9 TT |
16893 | /* Handle DW_TAG_restrict_type. */ |
16894 | ||
16895 | static struct type * | |
16896 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16897 | { | |
16898 | struct type *base_type, *cv_type; | |
16899 | ||
16900 | base_type = die_type (die, cu); | |
16901 | ||
16902 | /* The die_type call above may have already set the type for this DIE. */ | |
16903 | cv_type = get_die_type (die, cu); | |
16904 | if (cv_type) | |
16905 | return cv_type; | |
16906 | ||
16907 | cv_type = make_restrict_type (base_type); | |
16908 | return set_die_type (die, cv_type, cu); | |
16909 | } | |
16910 | ||
a2c2acaf MW |
16911 | /* Handle DW_TAG_atomic_type. */ |
16912 | ||
16913 | static struct type * | |
16914 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16915 | { | |
16916 | struct type *base_type, *cv_type; | |
16917 | ||
16918 | base_type = die_type (die, cu); | |
16919 | ||
16920 | /* The die_type call above may have already set the type for this DIE. */ | |
16921 | cv_type = get_die_type (die, cu); | |
16922 | if (cv_type) | |
16923 | return cv_type; | |
16924 | ||
16925 | cv_type = make_atomic_type (base_type); | |
16926 | return set_die_type (die, cv_type, cu); | |
16927 | } | |
16928 | ||
c906108c SS |
16929 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16930 | the user defined type vector. It isn't really a user defined type, | |
16931 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16932 | attribute to reference it. */ | |
16933 | ||
f792889a | 16934 | static struct type * |
e7c27a73 | 16935 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16936 | { |
518817b3 | 16937 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 16938 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
16939 | struct type *type, *range_type, *index_type, *char_type; |
16940 | struct attribute *attr; | |
216a7e6b AB |
16941 | struct dynamic_prop prop; |
16942 | bool length_is_constant = true; | |
16943 | LONGEST length; | |
16944 | ||
16945 | /* There are a couple of places where bit sizes might be made use of | |
16946 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16947 | of make use of these. Handling bit sizes that are a multiple of the | |
16948 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16949 | with that problem when we have to. Warn about these attributes being | |
16950 | unsupported, then parse the type and ignore them like we always | |
16951 | have. */ | |
16952 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16953 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16954 | { | |
16955 | static bool warning_printed = false; | |
16956 | if (!warning_printed) | |
16957 | { | |
16958 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16959 | "currently supported on DW_TAG_string_type.")); | |
16960 | warning_printed = true; | |
16961 | } | |
16962 | } | |
c906108c | 16963 | |
e142c38c | 16964 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16965 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16966 | { |
16967 | /* The string length describes the location at which the length of | |
16968 | the string can be found. The size of the length field can be | |
16969 | specified with one of the attributes below. */ | |
16970 | struct type *prop_type; | |
16971 | struct attribute *len | |
16972 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16973 | if (len == nullptr) | |
16974 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16975 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16976 | { |
16977 | /* Pass 0 as the default as we know this attribute is constant | |
16978 | and the default value will not be returned. */ | |
16979 | LONGEST sz = dwarf2_get_attr_constant_value (len, 0); | |
16980 | prop_type = dwarf2_per_cu_int_type (cu->per_cu, sz, true); | |
16981 | } | |
16982 | else | |
16983 | { | |
16984 | /* If the size is not specified then we assume it is the size of | |
16985 | an address on this target. */ | |
16986 | prop_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, true); | |
16987 | } | |
16988 | ||
16989 | /* Convert the attribute into a dynamic property. */ | |
16990 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16991 | length = 1; | |
16992 | else | |
16993 | length_is_constant = false; | |
16994 | } | |
16995 | else if (attr != nullptr) | |
16996 | { | |
16997 | /* This DW_AT_string_length just contains the length with no | |
16998 | indirection. There's no need to create a dynamic property in this | |
16999 | case. Pass 0 for the default value as we know it will not be | |
17000 | returned in this case. */ | |
17001 | length = dwarf2_get_attr_constant_value (attr, 0); | |
17002 | } | |
17003 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17004 | { |
216a7e6b AB |
17005 | /* We don't currently support non-constant byte sizes for strings. */ |
17006 | length = dwarf2_get_attr_constant_value (attr, 1); | |
c906108c SS |
17007 | } |
17008 | else | |
17009 | { | |
216a7e6b AB |
17010 | /* Use 1 as a fallback length if we have nothing else. */ |
17011 | length = 1; | |
c906108c | 17012 | } |
6ccb9162 | 17013 | |
46bf5051 | 17014 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17015 | if (length_is_constant) |
17016 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17017 | else | |
17018 | { | |
17019 | struct dynamic_prop low_bound; | |
17020 | ||
17021 | low_bound.kind = PROP_CONST; | |
17022 | low_bound.data.const_val = 1; | |
17023 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17024 | } | |
3b7538c0 UW |
17025 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17026 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17027 | |
f792889a | 17028 | return set_die_type (die, type, cu); |
c906108c SS |
17029 | } |
17030 | ||
4d804846 JB |
17031 | /* Assuming that DIE corresponds to a function, returns nonzero |
17032 | if the function is prototyped. */ | |
17033 | ||
17034 | static int | |
17035 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17036 | { | |
17037 | struct attribute *attr; | |
17038 | ||
17039 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17040 | if (attr && (DW_UNSND (attr) != 0)) | |
17041 | return 1; | |
17042 | ||
17043 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17044 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17045 | languages that allow unprototyped functions (Eg: Objective C). |
17046 | For all other languages, assume that functions are always | |
17047 | prototyped. */ | |
17048 | if (cu->language != language_c | |
17049 | && cu->language != language_objc | |
17050 | && cu->language != language_opencl) | |
17051 | return 1; | |
17052 | ||
17053 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17054 | prototyped and unprototyped functions; default to prototyped, | |
17055 | since that is more common in modern code (and RealView warns | |
17056 | about unprototyped functions). */ | |
17057 | if (producer_is_realview (cu->producer)) | |
17058 | return 1; | |
17059 | ||
17060 | return 0; | |
17061 | } | |
17062 | ||
c906108c SS |
17063 | /* Handle DIES due to C code like: |
17064 | ||
17065 | struct foo | |
c5aa993b JM |
17066 | { |
17067 | int (*funcp)(int a, long l); | |
17068 | int b; | |
17069 | }; | |
c906108c | 17070 | |
0963b4bd | 17071 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17072 | |
f792889a | 17073 | static struct type * |
e7c27a73 | 17074 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17075 | { |
518817b3 | 17076 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17077 | struct type *type; /* Type that this function returns. */ |
17078 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17079 | struct attribute *attr; |
17080 | ||
e7c27a73 | 17081 | type = die_type (die, cu); |
7e314c57 JK |
17082 | |
17083 | /* The die_type call above may have already set the type for this DIE. */ | |
17084 | ftype = get_die_type (die, cu); | |
17085 | if (ftype) | |
17086 | return ftype; | |
17087 | ||
0c8b41f1 | 17088 | ftype = lookup_function_type (type); |
c906108c | 17089 | |
4d804846 | 17090 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17091 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17092 | |
c055b101 CV |
17093 | /* Store the calling convention in the type if it's available in |
17094 | the subroutine die. Otherwise set the calling convention to | |
17095 | the default value DW_CC_normal. */ | |
17096 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17097 | if (attr != nullptr |
17098 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17099 | TYPE_CALLING_CONVENTION (ftype) | |
17100 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17101 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17102 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17103 | else | |
17104 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17105 | |
743649fd MW |
17106 | /* Record whether the function returns normally to its caller or not |
17107 | if the DWARF producer set that information. */ | |
17108 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17109 | if (attr && (DW_UNSND (attr) != 0)) | |
17110 | TYPE_NO_RETURN (ftype) = 1; | |
17111 | ||
76c10ea2 GM |
17112 | /* We need to add the subroutine type to the die immediately so |
17113 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17114 | declared as the same subroutine type. */ |
76c10ea2 | 17115 | set_die_type (die, ftype, cu); |
6e70227d | 17116 | |
639d11d3 | 17117 | if (die->child != NULL) |
c906108c | 17118 | { |
bb5ed363 | 17119 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17120 | struct die_info *child_die; |
8072405b | 17121 | int nparams, iparams; |
c906108c SS |
17122 | |
17123 | /* Count the number of parameters. | |
17124 | FIXME: GDB currently ignores vararg functions, but knows about | |
17125 | vararg member functions. */ | |
8072405b | 17126 | nparams = 0; |
639d11d3 | 17127 | child_die = die->child; |
c906108c SS |
17128 | while (child_die && child_die->tag) |
17129 | { | |
17130 | if (child_die->tag == DW_TAG_formal_parameter) | |
17131 | nparams++; | |
17132 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17133 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17134 | child_die = sibling_die (child_die); |
17135 | } | |
17136 | ||
17137 | /* Allocate storage for parameters and fill them in. */ | |
17138 | TYPE_NFIELDS (ftype) = nparams; | |
17139 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17140 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17141 | |
8072405b JK |
17142 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17143 | even if we error out during the parameters reading below. */ | |
17144 | for (iparams = 0; iparams < nparams; iparams++) | |
17145 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17146 | ||
17147 | iparams = 0; | |
639d11d3 | 17148 | child_die = die->child; |
c906108c SS |
17149 | while (child_die && child_die->tag) |
17150 | { | |
17151 | if (child_die->tag == DW_TAG_formal_parameter) | |
17152 | { | |
3ce3b1ba PA |
17153 | struct type *arg_type; |
17154 | ||
17155 | /* DWARF version 2 has no clean way to discern C++ | |
17156 | static and non-static member functions. G++ helps | |
17157 | GDB by marking the first parameter for non-static | |
17158 | member functions (which is the this pointer) as | |
17159 | artificial. We pass this information to | |
17160 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17161 | ||
17162 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17163 | 4.5 does not yet generate. */ | |
e142c38c | 17164 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17165 | if (attr != nullptr) |
c906108c SS |
17166 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17167 | else | |
9c37b5ae | 17168 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17169 | arg_type = die_type (child_die, cu); |
17170 | ||
17171 | /* RealView does not mark THIS as const, which the testsuite | |
17172 | expects. GCC marks THIS as const in method definitions, | |
17173 | but not in the class specifications (GCC PR 43053). */ | |
17174 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17175 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17176 | { | |
17177 | int is_this = 0; | |
17178 | struct dwarf2_cu *arg_cu = cu; | |
17179 | const char *name = dwarf2_name (child_die, cu); | |
17180 | ||
17181 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17182 | if (attr != nullptr) |
3ce3b1ba PA |
17183 | { |
17184 | /* If the compiler emits this, use it. */ | |
17185 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17186 | is_this = 1; | |
17187 | } | |
17188 | else if (name && strcmp (name, "this") == 0) | |
17189 | /* Function definitions will have the argument names. */ | |
17190 | is_this = 1; | |
17191 | else if (name == NULL && iparams == 0) | |
17192 | /* Declarations may not have the names, so like | |
17193 | elsewhere in GDB, assume an artificial first | |
17194 | argument is "this". */ | |
17195 | is_this = 1; | |
17196 | ||
17197 | if (is_this) | |
17198 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17199 | arg_type, 0); | |
17200 | } | |
17201 | ||
17202 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17203 | iparams++; |
17204 | } | |
17205 | child_die = sibling_die (child_die); | |
17206 | } | |
17207 | } | |
17208 | ||
76c10ea2 | 17209 | return ftype; |
c906108c SS |
17210 | } |
17211 | ||
f792889a | 17212 | static struct type * |
e7c27a73 | 17213 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17214 | { |
518817b3 | 17215 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17216 | const char *name = NULL; |
3c8e0968 | 17217 | struct type *this_type, *target_type; |
c906108c | 17218 | |
94af9270 | 17219 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17220 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17221 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17222 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17223 | target_type = die_type (die, cu); |
17224 | if (target_type != this_type) | |
17225 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17226 | else | |
17227 | { | |
17228 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17229 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17230 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17231 | "- DIE at %s [in module %s]"), |
17232 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17233 | TYPE_TARGET_TYPE (this_type) = NULL; |
17234 | } | |
f792889a | 17235 | return this_type; |
c906108c SS |
17236 | } |
17237 | ||
9b790ce7 UW |
17238 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17239 | (which may be different from NAME) to the architecture back-end to allow | |
17240 | it to guess the correct format if necessary. */ | |
17241 | ||
17242 | static struct type * | |
17243 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17244 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
17245 | { |
17246 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17247 | const struct floatformat **format; | |
17248 | struct type *type; | |
17249 | ||
17250 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17251 | if (format) | |
103a685e | 17252 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17253 | else |
77b7c781 | 17254 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17255 | |
17256 | return type; | |
17257 | } | |
17258 | ||
eb77c9df AB |
17259 | /* Allocate an integer type of size BITS and name NAME. */ |
17260 | ||
17261 | static struct type * | |
17262 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17263 | int bits, int unsigned_p, const char *name) | |
17264 | { | |
17265 | struct type *type; | |
17266 | ||
17267 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17268 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17269 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17270 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17271 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17272 | type = objfile_type (objfile)->builtin_void; |
17273 | else | |
17274 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17275 | ||
17276 | return type; | |
17277 | } | |
17278 | ||
8bdc1658 AB |
17279 | /* Initialise and return a floating point type of size BITS suitable for |
17280 | use as a component of a complex number. The NAME_HINT is passed through | |
17281 | when initialising the floating point type and is the name of the complex | |
17282 | type. | |
17283 | ||
17284 | As DWARF doesn't currently provide an explicit name for the components | |
17285 | of a complex number, but it can be helpful to have these components | |
17286 | named, we try to select a suitable name based on the size of the | |
17287 | component. */ | |
17288 | static struct type * | |
17289 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17290 | struct objfile *objfile, | |
103a685e TT |
17291 | int bits, const char *name_hint, |
17292 | enum bfd_endian byte_order) | |
8bdc1658 AB |
17293 | { |
17294 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
17295 | struct type *tt = nullptr; | |
17296 | ||
35add35e AB |
17297 | /* Try to find a suitable floating point builtin type of size BITS. |
17298 | We're going to use the name of this type as the name for the complex | |
17299 | target type that we are about to create. */ | |
1db455a7 | 17300 | switch (cu->language) |
8bdc1658 | 17301 | { |
1db455a7 AB |
17302 | case language_fortran: |
17303 | switch (bits) | |
17304 | { | |
17305 | case 32: | |
17306 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17307 | break; | |
17308 | case 64: | |
17309 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17310 | break; | |
17311 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17312 | case 128: | |
17313 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17314 | break; | |
17315 | } | |
8bdc1658 | 17316 | break; |
1db455a7 AB |
17317 | default: |
17318 | switch (bits) | |
17319 | { | |
17320 | case 32: | |
17321 | tt = builtin_type (gdbarch)->builtin_float; | |
17322 | break; | |
17323 | case 64: | |
17324 | tt = builtin_type (gdbarch)->builtin_double; | |
17325 | break; | |
17326 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17327 | case 128: | |
17328 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17329 | break; | |
17330 | } | |
8bdc1658 AB |
17331 | break; |
17332 | } | |
17333 | ||
35add35e AB |
17334 | /* If the type we found doesn't match the size we were looking for, then |
17335 | pretend we didn't find a type at all, the complex target type we | |
17336 | create will then be nameless. */ | |
a12e5744 | 17337 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17338 | tt = nullptr; |
17339 | ||
8bdc1658 | 17340 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 17341 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17342 | } |
17343 | ||
c906108c SS |
17344 | /* Find a representation of a given base type and install |
17345 | it in the TYPE field of the die. */ | |
17346 | ||
f792889a | 17347 | static struct type * |
e7c27a73 | 17348 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17349 | { |
518817b3 | 17350 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17351 | struct type *type; |
17352 | struct attribute *attr; | |
19f392bc | 17353 | int encoding = 0, bits = 0; |
15d034d0 | 17354 | const char *name; |
34877895 | 17355 | gdbarch *arch; |
c906108c | 17356 | |
e142c38c | 17357 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17358 | if (attr != nullptr) |
34877895 | 17359 | encoding = DW_UNSND (attr); |
e142c38c | 17360 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17361 | if (attr != nullptr) |
34877895 | 17362 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17363 | name = dwarf2_name (die, cu); |
6ccb9162 | 17364 | if (!name) |
34877895 | 17365 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
17366 | |
17367 | arch = get_objfile_arch (objfile); | |
17368 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
17369 | ||
34877895 PJ |
17370 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17371 | if (attr) | |
103a685e TT |
17372 | { |
17373 | int endianity = DW_UNSND (attr); | |
17374 | ||
17375 | switch (endianity) | |
17376 | { | |
17377 | case DW_END_big: | |
17378 | byte_order = BFD_ENDIAN_BIG; | |
17379 | break; | |
17380 | case DW_END_little: | |
17381 | byte_order = BFD_ENDIAN_LITTLE; | |
17382 | break; | |
17383 | default: | |
17384 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17385 | break; | |
17386 | } | |
17387 | } | |
6ccb9162 UW |
17388 | |
17389 | switch (encoding) | |
c906108c | 17390 | { |
6ccb9162 UW |
17391 | case DW_ATE_address: |
17392 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17393 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17394 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17395 | break; |
17396 | case DW_ATE_boolean: | |
19f392bc | 17397 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17398 | break; |
17399 | case DW_ATE_complex_float: | |
103a685e TT |
17400 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17401 | byte_order); | |
19f392bc | 17402 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17403 | break; |
17404 | case DW_ATE_decimal_float: | |
19f392bc | 17405 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17406 | break; |
17407 | case DW_ATE_float: | |
103a685e | 17408 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17409 | break; |
17410 | case DW_ATE_signed: | |
eb77c9df | 17411 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17412 | break; |
17413 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17414 | if (cu->language == language_fortran |
17415 | && name | |
61012eef | 17416 | && startswith (name, "character(")) |
19f392bc UW |
17417 | type = init_character_type (objfile, bits, 1, name); |
17418 | else | |
eb77c9df | 17419 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17420 | break; |
17421 | case DW_ATE_signed_char: | |
6e70227d | 17422 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17423 | || cu->language == language_pascal |
17424 | || cu->language == language_fortran) | |
19f392bc UW |
17425 | type = init_character_type (objfile, bits, 0, name); |
17426 | else | |
eb77c9df | 17427 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17428 | break; |
17429 | case DW_ATE_unsigned_char: | |
868a0084 | 17430 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17431 | || cu->language == language_pascal |
c44af4eb TT |
17432 | || cu->language == language_fortran |
17433 | || cu->language == language_rust) | |
19f392bc UW |
17434 | type = init_character_type (objfile, bits, 1, name); |
17435 | else | |
eb77c9df | 17436 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17437 | break; |
75079b2b | 17438 | case DW_ATE_UTF: |
53e710ac | 17439 | { |
53e710ac PA |
17440 | if (bits == 16) |
17441 | type = builtin_type (arch)->builtin_char16; | |
17442 | else if (bits == 32) | |
17443 | type = builtin_type (arch)->builtin_char32; | |
17444 | else | |
17445 | { | |
b98664d3 | 17446 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17447 | bits); |
eb77c9df | 17448 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17449 | } |
17450 | return set_die_type (die, type, cu); | |
17451 | } | |
75079b2b TT |
17452 | break; |
17453 | ||
6ccb9162 | 17454 | default: |
b98664d3 | 17455 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17456 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17457 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17458 | break; |
c906108c | 17459 | } |
6ccb9162 | 17460 | |
0114d602 | 17461 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17462 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17463 | |
2b4424c3 TT |
17464 | maybe_set_alignment (cu, die, type); |
17465 | ||
103a685e | 17466 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17467 | |
f792889a | 17468 | return set_die_type (die, type, cu); |
c906108c SS |
17469 | } |
17470 | ||
80180f79 SA |
17471 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17472 | resulting value of the attribute into struct bound_prop. | |
17473 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17474 | ||
17475 | static int | |
17476 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17477 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17478 | struct type *default_type) | |
80180f79 SA |
17479 | { |
17480 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17481 | struct obstack *obstack |
17482 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17483 | |
9a49df9d AB |
17484 | gdb_assert (default_type != NULL); |
17485 | ||
80180f79 SA |
17486 | if (attr == NULL || prop == NULL) |
17487 | return 0; | |
17488 | ||
4fc6c0d5 | 17489 | if (attr->form_is_block ()) |
80180f79 | 17490 | { |
8d749320 | 17491 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17492 | baton->property_type = default_type; |
80180f79 SA |
17493 | baton->locexpr.per_cu = cu->per_cu; |
17494 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17495 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17496 | switch (attr->name) |
17497 | { | |
17498 | case DW_AT_string_length: | |
17499 | baton->locexpr.is_reference = true; | |
17500 | break; | |
17501 | default: | |
17502 | baton->locexpr.is_reference = false; | |
17503 | break; | |
17504 | } | |
80180f79 SA |
17505 | prop->data.baton = baton; |
17506 | prop->kind = PROP_LOCEXPR; | |
17507 | gdb_assert (prop->data.baton != NULL); | |
17508 | } | |
cd6c91b4 | 17509 | else if (attr->form_is_ref ()) |
80180f79 SA |
17510 | { |
17511 | struct dwarf2_cu *target_cu = cu; | |
17512 | struct die_info *target_die; | |
17513 | struct attribute *target_attr; | |
17514 | ||
17515 | target_die = follow_die_ref (die, attr, &target_cu); | |
17516 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17517 | if (target_attr == NULL) |
17518 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17519 | target_cu); | |
80180f79 SA |
17520 | if (target_attr == NULL) |
17521 | return 0; | |
17522 | ||
df25ebbd | 17523 | switch (target_attr->name) |
80180f79 | 17524 | { |
df25ebbd | 17525 | case DW_AT_location: |
cd6c91b4 | 17526 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17527 | { |
8d749320 | 17528 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17529 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17530 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17531 | prop->data.baton = baton; | |
17532 | prop->kind = PROP_LOCLIST; | |
17533 | gdb_assert (prop->data.baton != NULL); | |
17534 | } | |
4fc6c0d5 | 17535 | else if (target_attr->form_is_block ()) |
df25ebbd | 17536 | { |
8d749320 | 17537 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17538 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17539 | baton->locexpr.per_cu = cu->per_cu; |
17540 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17541 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17542 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17543 | prop->data.baton = baton; |
17544 | prop->kind = PROP_LOCEXPR; | |
17545 | gdb_assert (prop->data.baton != NULL); | |
17546 | } | |
17547 | else | |
17548 | { | |
17549 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17550 | "dynamic property"); | |
17551 | return 0; | |
17552 | } | |
17553 | break; | |
17554 | case DW_AT_data_member_location: | |
17555 | { | |
17556 | LONGEST offset; | |
17557 | ||
17558 | if (!handle_data_member_location (target_die, target_cu, | |
17559 | &offset)) | |
17560 | return 0; | |
17561 | ||
8d749320 | 17562 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17563 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17564 | target_cu); |
df25ebbd JB |
17565 | baton->offset_info.offset = offset; |
17566 | baton->offset_info.type = die_type (target_die, target_cu); | |
17567 | prop->data.baton = baton; | |
17568 | prop->kind = PROP_ADDR_OFFSET; | |
17569 | break; | |
17570 | } | |
80180f79 SA |
17571 | } |
17572 | } | |
cd6c91b4 | 17573 | else if (attr->form_is_constant ()) |
80180f79 SA |
17574 | { |
17575 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17576 | prop->kind = PROP_CONST; | |
17577 | } | |
17578 | else | |
17579 | { | |
17580 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17581 | dwarf2_name (die, cu)); | |
17582 | return 0; | |
17583 | } | |
17584 | ||
17585 | return 1; | |
17586 | } | |
17587 | ||
11a8b164 AB |
17588 | /* Find an integer type SIZE_IN_BYTES bytes in size and return it. |
17589 | UNSIGNED_P controls if the integer is unsigned or not. */ | |
9a49df9d AB |
17590 | |
17591 | static struct type * | |
11a8b164 AB |
17592 | dwarf2_per_cu_int_type (struct dwarf2_per_cu_data *per_cu, |
17593 | int size_in_bytes, bool unsigned_p) | |
9a49df9d AB |
17594 | { |
17595 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
9a49df9d AB |
17596 | struct type *int_type; |
17597 | ||
17598 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17599 | #define TRY_TYPE(F) \ |
17600 | int_type = (unsigned_p \ | |
17601 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17602 | : objfile_type (objfile)->builtin_ ## F); \ | |
17603 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17604 | return int_type |
17605 | ||
17606 | TRY_TYPE (char); | |
17607 | TRY_TYPE (short); | |
17608 | TRY_TYPE (int); | |
17609 | TRY_TYPE (long); | |
17610 | TRY_TYPE (long_long); | |
17611 | ||
17612 | #undef TRY_TYPE | |
17613 | ||
17614 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17615 | } | |
17616 | ||
11a8b164 AB |
17617 | /* Find an integer type the same size as the address size given in the |
17618 | compilation unit header for PER_CU. UNSIGNED_P controls if the integer | |
17619 | is unsigned or not. */ | |
17620 | ||
17621 | static struct type * | |
17622 | dwarf2_per_cu_addr_sized_int_type (struct dwarf2_per_cu_data *per_cu, | |
17623 | bool unsigned_p) | |
17624 | { | |
17625 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
17626 | return dwarf2_per_cu_int_type (per_cu, addr_size, unsigned_p); | |
17627 | } | |
17628 | ||
b86352cf AB |
17629 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17630 | present (which is valid) then compute the default type based on the | |
17631 | compilation units address size. */ | |
17632 | ||
17633 | static struct type * | |
17634 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17635 | { | |
17636 | struct type *index_type = die_type (die, cu); | |
17637 | ||
17638 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17639 | without specifying a base type. | |
17640 | In that case, the base type must be set to the type of | |
17641 | the lower bound, upper bound or count, in that order, if any of these | |
17642 | three attributes references an object that has a type. | |
17643 | If no base type is found, the Dwarf-2 specifications say that | |
17644 | a signed integer type of size equal to the size of an address should | |
17645 | be used. | |
17646 | For the following C code: `extern char gdb_int [];' | |
17647 | GCC produces an empty range DIE. | |
17648 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17649 | high bound or count are not yet handled by this code. */ | |
17650 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
9a49df9d | 17651 | index_type = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); |
b86352cf AB |
17652 | |
17653 | return index_type; | |
17654 | } | |
17655 | ||
a02abb62 JB |
17656 | /* Read the given DW_AT_subrange DIE. */ |
17657 | ||
f792889a | 17658 | static struct type * |
a02abb62 JB |
17659 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17660 | { | |
4c9ad8c2 | 17661 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17662 | struct type *range_type; |
17663 | struct attribute *attr; | |
729efb13 | 17664 | struct dynamic_prop low, high; |
4fae6e18 | 17665 | int low_default_is_valid; |
c451ebe5 | 17666 | int high_bound_is_count = 0; |
15d034d0 | 17667 | const char *name; |
d359392f | 17668 | ULONGEST negative_mask; |
e77813c8 | 17669 | |
b86352cf AB |
17670 | orig_base_type = read_subrange_index_type (die, cu); |
17671 | ||
4c9ad8c2 TT |
17672 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17673 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17674 | creating the range type, but we use the result of check_typedef | |
17675 | when examining properties of the type. */ | |
17676 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17677 | |
7e314c57 JK |
17678 | /* The die_type call above may have already set the type for this DIE. */ |
17679 | range_type = get_die_type (die, cu); | |
17680 | if (range_type) | |
17681 | return range_type; | |
17682 | ||
729efb13 SA |
17683 | low.kind = PROP_CONST; |
17684 | high.kind = PROP_CONST; | |
17685 | high.data.const_val = 0; | |
17686 | ||
4fae6e18 JK |
17687 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17688 | omitting DW_AT_lower_bound. */ | |
17689 | switch (cu->language) | |
6e70227d | 17690 | { |
4fae6e18 JK |
17691 | case language_c: |
17692 | case language_cplus: | |
729efb13 | 17693 | low.data.const_val = 0; |
4fae6e18 JK |
17694 | low_default_is_valid = 1; |
17695 | break; | |
17696 | case language_fortran: | |
729efb13 | 17697 | low.data.const_val = 1; |
4fae6e18 JK |
17698 | low_default_is_valid = 1; |
17699 | break; | |
17700 | case language_d: | |
4fae6e18 | 17701 | case language_objc: |
c44af4eb | 17702 | case language_rust: |
729efb13 | 17703 | low.data.const_val = 0; |
4fae6e18 JK |
17704 | low_default_is_valid = (cu->header.version >= 4); |
17705 | break; | |
17706 | case language_ada: | |
17707 | case language_m2: | |
17708 | case language_pascal: | |
729efb13 | 17709 | low.data.const_val = 1; |
4fae6e18 JK |
17710 | low_default_is_valid = (cu->header.version >= 4); |
17711 | break; | |
17712 | default: | |
729efb13 | 17713 | low.data.const_val = 0; |
4fae6e18 JK |
17714 | low_default_is_valid = 0; |
17715 | break; | |
a02abb62 JB |
17716 | } |
17717 | ||
e142c38c | 17718 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17719 | if (attr != nullptr) |
9a49df9d | 17720 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17721 | else if (!low_default_is_valid) |
b98664d3 | 17722 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17723 | "- DIE at %s [in module %s]"), |
17724 | sect_offset_str (die->sect_off), | |
518817b3 | 17725 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17726 | |
506f5c41 TV |
17727 | struct attribute *attr_ub, *attr_count; |
17728 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17729 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17730 | { |
506f5c41 | 17731 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17732 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17733 | { |
c451ebe5 SA |
17734 | /* If bounds are constant do the final calculation here. */ |
17735 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17736 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17737 | else | |
17738 | high_bound_is_count = 1; | |
c2ff108b | 17739 | } |
506f5c41 TV |
17740 | else |
17741 | { | |
17742 | if (attr_ub != NULL) | |
17743 | complaint (_("Unresolved DW_AT_upper_bound " | |
17744 | "- DIE at %s [in module %s]"), | |
17745 | sect_offset_str (die->sect_off), | |
17746 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17747 | if (attr_count != NULL) | |
17748 | complaint (_("Unresolved DW_AT_count " | |
17749 | "- DIE at %s [in module %s]"), | |
17750 | sect_offset_str (die->sect_off), | |
17751 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17752 | } | |
e77813c8 | 17753 | } |
a02abb62 | 17754 | |
4e962e74 TT |
17755 | LONGEST bias = 0; |
17756 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17757 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
4e962e74 TT |
17758 | bias = dwarf2_get_attr_constant_value (bias_attr, 0); |
17759 | ||
dbb9c2b1 JB |
17760 | /* Normally, the DWARF producers are expected to use a signed |
17761 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17762 | But this is unfortunately not always the case, as witnessed | |
17763 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17764 | is used instead. To work around that ambiguity, we treat | |
17765 | the bounds as signed, and thus sign-extend their values, when | |
17766 | the base type is signed. */ | |
6e70227d | 17767 | negative_mask = |
d359392f | 17768 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17769 | if (low.kind == PROP_CONST |
17770 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17771 | low.data.const_val |= negative_mask; | |
17772 | if (high.kind == PROP_CONST | |
17773 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17774 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17775 | |
5bbd8269 AB |
17776 | /* Check for bit and byte strides. */ |
17777 | struct dynamic_prop byte_stride_prop; | |
17778 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17779 | if (attr_byte_stride != nullptr) | |
17780 | { | |
17781 | struct type *prop_type | |
17782 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
17783 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, | |
17784 | prop_type); | |
17785 | } | |
17786 | ||
17787 | struct dynamic_prop bit_stride_prop; | |
17788 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17789 | if (attr_bit_stride != nullptr) | |
17790 | { | |
17791 | /* It only makes sense to have either a bit or byte stride. */ | |
17792 | if (attr_byte_stride != nullptr) | |
17793 | { | |
17794 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17795 | "- DIE at %s [in module %s]"), | |
17796 | sect_offset_str (die->sect_off), | |
17797 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17798 | attr_bit_stride = nullptr; | |
17799 | } | |
17800 | else | |
17801 | { | |
17802 | struct type *prop_type | |
17803 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
17804 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, | |
17805 | prop_type); | |
17806 | } | |
17807 | } | |
17808 | ||
17809 | if (attr_byte_stride != nullptr | |
17810 | || attr_bit_stride != nullptr) | |
17811 | { | |
17812 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17813 | struct dynamic_prop *stride | |
17814 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17815 | ||
17816 | range_type | |
17817 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17818 | &high, bias, stride, byte_stride_p); | |
17819 | } | |
17820 | else | |
17821 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17822 | |
c451ebe5 SA |
17823 | if (high_bound_is_count) |
17824 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17825 | ||
c2ff108b JK |
17826 | /* Ada expects an empty array on no boundary attributes. */ |
17827 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17828 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17829 | |
39cbfefa DJ |
17830 | name = dwarf2_name (die, cu); |
17831 | if (name) | |
17832 | TYPE_NAME (range_type) = name; | |
6e70227d | 17833 | |
e142c38c | 17834 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17835 | if (attr != nullptr) |
a02abb62 JB |
17836 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17837 | ||
2b4424c3 TT |
17838 | maybe_set_alignment (cu, die, range_type); |
17839 | ||
7e314c57 JK |
17840 | set_die_type (die, range_type, cu); |
17841 | ||
17842 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17843 | set_descriptive_type (range_type, die, cu); |
17844 | ||
7e314c57 | 17845 | return range_type; |
a02abb62 | 17846 | } |
6e70227d | 17847 | |
f792889a | 17848 | static struct type * |
81a17f79 JB |
17849 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17850 | { | |
17851 | struct type *type; | |
81a17f79 | 17852 | |
518817b3 SM |
17853 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17854 | NULL); | |
0114d602 | 17855 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17856 | |
74a2f8ff | 17857 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17858 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17859 | such a type, we treat it as a stub, and try to resolve it later on, |
17860 | when needed. */ | |
17861 | if (cu->language == language_ada) | |
17862 | TYPE_STUB (type) = 1; | |
17863 | ||
f792889a | 17864 | return set_die_type (die, type, cu); |
81a17f79 | 17865 | } |
a02abb62 | 17866 | |
639d11d3 DC |
17867 | /* Read a single die and all its descendents. Set the die's sibling |
17868 | field to NULL; set other fields in the die correctly, and set all | |
17869 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17870 | location of the info_ptr after reading all of those dies. PARENT | |
17871 | is the parent of the die in question. */ | |
17872 | ||
17873 | static struct die_info * | |
dee91e82 | 17874 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17875 | const gdb_byte *info_ptr, |
17876 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17877 | struct die_info *parent) |
639d11d3 DC |
17878 | { |
17879 | struct die_info *die; | |
d521ce57 | 17880 | const gdb_byte *cur_ptr; |
639d11d3 | 17881 | |
3e225074 | 17882 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17883 | if (die == NULL) |
17884 | { | |
17885 | *new_info_ptr = cur_ptr; | |
17886 | return NULL; | |
17887 | } | |
93311388 | 17888 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17889 | |
3e225074 | 17890 | if (die->has_children) |
bf6af496 | 17891 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17892 | else |
17893 | { | |
17894 | die->child = NULL; | |
17895 | *new_info_ptr = cur_ptr; | |
17896 | } | |
17897 | ||
17898 | die->sibling = NULL; | |
17899 | die->parent = parent; | |
17900 | return die; | |
17901 | } | |
17902 | ||
17903 | /* Read a die, all of its descendents, and all of its siblings; set | |
17904 | all of the fields of all of the dies correctly. Arguments are as | |
17905 | in read_die_and_children. */ | |
17906 | ||
17907 | static struct die_info * | |
bf6af496 | 17908 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17909 | const gdb_byte *info_ptr, |
17910 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17911 | struct die_info *parent) |
639d11d3 DC |
17912 | { |
17913 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17914 | const gdb_byte *cur_ptr; |
639d11d3 | 17915 | |
c906108c | 17916 | cur_ptr = info_ptr; |
639d11d3 DC |
17917 | first_die = last_sibling = NULL; |
17918 | ||
17919 | while (1) | |
c906108c | 17920 | { |
639d11d3 | 17921 | struct die_info *die |
dee91e82 | 17922 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17923 | |
1d325ec1 | 17924 | if (die == NULL) |
c906108c | 17925 | { |
639d11d3 DC |
17926 | *new_info_ptr = cur_ptr; |
17927 | return first_die; | |
c906108c | 17928 | } |
1d325ec1 DJ |
17929 | |
17930 | if (!first_die) | |
17931 | first_die = die; | |
c906108c | 17932 | else |
1d325ec1 DJ |
17933 | last_sibling->sibling = die; |
17934 | ||
17935 | last_sibling = die; | |
c906108c | 17936 | } |
c906108c SS |
17937 | } |
17938 | ||
bf6af496 DE |
17939 | /* Read a die, all of its descendents, and all of its siblings; set |
17940 | all of the fields of all of the dies correctly. Arguments are as | |
17941 | in read_die_and_children. | |
17942 | This the main entry point for reading a DIE and all its children. */ | |
17943 | ||
17944 | static struct die_info * | |
17945 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17946 | const gdb_byte *info_ptr, |
17947 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17948 | struct die_info *parent) |
17949 | { | |
17950 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17951 | new_info_ptr, parent); | |
17952 | ||
b4f54984 | 17953 | if (dwarf_die_debug) |
bf6af496 DE |
17954 | { |
17955 | fprintf_unfiltered (gdb_stdlog, | |
17956 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17957 | reader->die_section->get_name (), |
bf6af496 DE |
17958 | (unsigned) (info_ptr - reader->die_section->buffer), |
17959 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17960 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17961 | } |
17962 | ||
17963 | return die; | |
17964 | } | |
17965 | ||
3019eac3 DE |
17966 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17967 | attributes. | |
17968 | The caller is responsible for filling in the extra attributes | |
17969 | and updating (*DIEP)->num_attrs. | |
17970 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17971 | except for its child, sibling, and parent fields. */ |
93311388 | 17972 | |
d521ce57 | 17973 | static const gdb_byte * |
3019eac3 | 17974 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17975 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17976 | int num_extra_attrs) |
93311388 | 17977 | { |
b64f50a1 | 17978 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17979 | struct abbrev_info *abbrev; |
17980 | struct die_info *die; | |
17981 | struct dwarf2_cu *cu = reader->cu; | |
17982 | bfd *abfd = reader->abfd; | |
17983 | ||
9c541725 | 17984 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17985 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17986 | info_ptr += bytes_read; | |
17987 | if (!abbrev_number) | |
17988 | { | |
17989 | *diep = NULL; | |
93311388 DE |
17990 | return info_ptr; |
17991 | } | |
17992 | ||
685af9cd | 17993 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17994 | if (!abbrev) |
348e048f DE |
17995 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17996 | abbrev_number, | |
17997 | bfd_get_filename (abfd)); | |
17998 | ||
3019eac3 | 17999 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18000 | die->sect_off = sect_off; |
93311388 DE |
18001 | die->tag = abbrev->tag; |
18002 | die->abbrev = abbrev_number; | |
3e225074 | 18003 | die->has_children = abbrev->has_children; |
93311388 | 18004 | |
3019eac3 DE |
18005 | /* Make the result usable. |
18006 | The caller needs to update num_attrs after adding the extra | |
18007 | attributes. */ | |
93311388 DE |
18008 | die->num_attrs = abbrev->num_attrs; |
18009 | ||
18a8505e | 18010 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18011 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18012 | { |
18013 | bool need_reprocess; | |
18014 | info_ptr = | |
18015 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18016 | info_ptr, &need_reprocess); | |
18017 | if (need_reprocess) | |
18018 | indexes_that_need_reprocess.push_back (i); | |
18019 | } | |
18020 | ||
18021 | struct attribute *attr = dwarf2_attr_no_follow (die, DW_AT_str_offsets_base); | |
18022 | if (attr != nullptr) | |
18023 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18024 | |
18a8505e AT |
18025 | auto maybe_addr_base = lookup_addr_base(die); |
18026 | if (maybe_addr_base.has_value ()) | |
18027 | cu->addr_base = *maybe_addr_base; | |
18028 | for (int index : indexes_that_need_reprocess) | |
18029 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18030 | *diep = die; |
93311388 DE |
18031 | return info_ptr; |
18032 | } | |
18033 | ||
3019eac3 DE |
18034 | /* Read a die and all its attributes. |
18035 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18036 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18037 | |
d521ce57 | 18038 | static const gdb_byte * |
3019eac3 | 18039 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18040 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18041 | { |
d521ce57 | 18042 | const gdb_byte *result; |
bf6af496 | 18043 | |
3e225074 | 18044 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18045 | |
b4f54984 | 18046 | if (dwarf_die_debug) |
bf6af496 DE |
18047 | { |
18048 | fprintf_unfiltered (gdb_stdlog, | |
18049 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18050 | reader->die_section->get_name (), |
bf6af496 DE |
18051 | (unsigned) (info_ptr - reader->die_section->buffer), |
18052 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18053 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18054 | } |
18055 | ||
18056 | return result; | |
3019eac3 | 18057 | } |
433df2d4 | 18058 | \f |
c906108c | 18059 | |
72bf9492 DJ |
18060 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18061 | symbol for. */ | |
18062 | ||
18063 | static int | |
18064 | is_type_tag_for_partial (int tag) | |
18065 | { | |
18066 | switch (tag) | |
18067 | { | |
18068 | #if 0 | |
18069 | /* Some types that would be reasonable to generate partial symbols for, | |
18070 | that we don't at present. */ | |
18071 | case DW_TAG_array_type: | |
18072 | case DW_TAG_file_type: | |
18073 | case DW_TAG_ptr_to_member_type: | |
18074 | case DW_TAG_set_type: | |
18075 | case DW_TAG_string_type: | |
18076 | case DW_TAG_subroutine_type: | |
18077 | #endif | |
18078 | case DW_TAG_base_type: | |
18079 | case DW_TAG_class_type: | |
680b30c7 | 18080 | case DW_TAG_interface_type: |
72bf9492 DJ |
18081 | case DW_TAG_enumeration_type: |
18082 | case DW_TAG_structure_type: | |
18083 | case DW_TAG_subrange_type: | |
18084 | case DW_TAG_typedef: | |
18085 | case DW_TAG_union_type: | |
18086 | return 1; | |
18087 | default: | |
18088 | return 0; | |
18089 | } | |
18090 | } | |
18091 | ||
18092 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18093 | ||
18094 | static struct partial_die_info * | |
dee91e82 | 18095 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18096 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18097 | { |
dee91e82 | 18098 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18099 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18100 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18101 | unsigned int bytes_read; |
5afb4e99 | 18102 | unsigned int load_all = 0; |
72bf9492 DJ |
18103 | int nesting_level = 1; |
18104 | ||
18105 | parent_die = NULL; | |
18106 | last_die = NULL; | |
18107 | ||
7adf1e79 DE |
18108 | gdb_assert (cu->per_cu != NULL); |
18109 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18110 | load_all = 1; |
18111 | ||
72bf9492 DJ |
18112 | cu->partial_dies |
18113 | = htab_create_alloc_ex (cu->header.length / 12, | |
18114 | partial_die_hash, | |
18115 | partial_die_eq, | |
18116 | NULL, | |
18117 | &cu->comp_unit_obstack, | |
18118 | hashtab_obstack_allocate, | |
18119 | dummy_obstack_deallocate); | |
18120 | ||
72bf9492 DJ |
18121 | while (1) |
18122 | { | |
685af9cd | 18123 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18124 | |
18125 | /* A NULL abbrev means the end of a series of children. */ | |
18126 | if (abbrev == NULL) | |
18127 | { | |
18128 | if (--nesting_level == 0) | |
cd9983dd YQ |
18129 | return first_die; |
18130 | ||
72bf9492 DJ |
18131 | info_ptr += bytes_read; |
18132 | last_die = parent_die; | |
18133 | parent_die = parent_die->die_parent; | |
18134 | continue; | |
18135 | } | |
18136 | ||
98bfdba5 PA |
18137 | /* Check for template arguments. We never save these; if |
18138 | they're seen, we just mark the parent, and go on our way. */ | |
18139 | if (parent_die != NULL | |
18140 | && cu->language == language_cplus | |
18141 | && (abbrev->tag == DW_TAG_template_type_param | |
18142 | || abbrev->tag == DW_TAG_template_value_param)) | |
18143 | { | |
18144 | parent_die->has_template_arguments = 1; | |
18145 | ||
18146 | if (!load_all) | |
18147 | { | |
18148 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18149 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18150 | continue; |
18151 | } | |
18152 | } | |
18153 | ||
0d99eb77 | 18154 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18155 | Skip their other children. */ |
18156 | if (!load_all | |
18157 | && cu->language == language_cplus | |
18158 | && parent_die != NULL | |
18159 | && parent_die->tag == DW_TAG_subprogram) | |
18160 | { | |
dee91e82 | 18161 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18162 | continue; |
18163 | } | |
18164 | ||
5afb4e99 DJ |
18165 | /* Check whether this DIE is interesting enough to save. Normally |
18166 | we would not be interested in members here, but there may be | |
18167 | later variables referencing them via DW_AT_specification (for | |
18168 | static members). */ | |
18169 | if (!load_all | |
18170 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18171 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18172 | && abbrev->tag != DW_TAG_enumerator |
18173 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18174 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18175 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18176 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18177 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18178 | && abbrev->tag != DW_TAG_module |
95554aad | 18179 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18180 | && abbrev->tag != DW_TAG_imported_unit |
18181 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18182 | { |
18183 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18184 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18185 | continue; |
18186 | } | |
18187 | ||
6f06d47b YQ |
18188 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18189 | abbrev); | |
cd9983dd | 18190 | |
48fbe735 | 18191 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18192 | |
18193 | /* This two-pass algorithm for processing partial symbols has a | |
18194 | high cost in cache pressure. Thus, handle some simple cases | |
18195 | here which cover the majority of C partial symbols. DIEs | |
18196 | which neither have specification tags in them, nor could have | |
18197 | specification tags elsewhere pointing at them, can simply be | |
18198 | processed and discarded. | |
18199 | ||
18200 | This segment is also optional; scan_partial_symbols and | |
18201 | add_partial_symbol will handle these DIEs if we chain | |
18202 | them in normally. When compilers which do not emit large | |
18203 | quantities of duplicate debug information are more common, | |
18204 | this code can probably be removed. */ | |
18205 | ||
18206 | /* Any complete simple types at the top level (pretty much all | |
18207 | of them, for a language without namespaces), can be processed | |
18208 | directly. */ | |
18209 | if (parent_die == NULL | |
cd9983dd YQ |
18210 | && pdi.has_specification == 0 |
18211 | && pdi.is_declaration == 0 | |
18212 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18213 | || pdi.tag == DW_TAG_base_type | |
18214 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18215 | { |
cd9983dd | 18216 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18217 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18218 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18219 | psymbol_placement::STATIC, |
1762568f | 18220 | 0, cu->language, objfile); |
cd9983dd | 18221 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18222 | continue; |
18223 | } | |
18224 | ||
d8228535 JK |
18225 | /* The exception for DW_TAG_typedef with has_children above is |
18226 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18227 | type_name_or_error will error on such types later. |
d8228535 JK |
18228 | |
18229 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18230 | it could not find the child DIEs referenced later, this is checked | |
18231 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18232 | ||
cd9983dd | 18233 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18234 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18235 | "- DIE at %s [in module %s]"), |
cd9983dd | 18236 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18237 | |
72bf9492 DJ |
18238 | /* If we're at the second level, and we're an enumerator, and |
18239 | our parent has no specification (meaning possibly lives in a | |
18240 | namespace elsewhere), then we can add the partial symbol now | |
18241 | instead of queueing it. */ | |
cd9983dd | 18242 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18243 | && parent_die != NULL |
18244 | && parent_die->die_parent == NULL | |
18245 | && parent_die->tag == DW_TAG_enumeration_type | |
18246 | && parent_die->has_specification == 0) | |
18247 | { | |
cd9983dd | 18248 | if (pdi.name == NULL) |
b98664d3 | 18249 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18250 | else if (building_psymtab) |
31edb802 | 18251 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18252 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18253 | cu->language == language_cplus |
75aedd27 TT |
18254 | ? psymbol_placement::GLOBAL |
18255 | : psymbol_placement::STATIC, | |
1762568f | 18256 | 0, cu->language, objfile); |
72bf9492 | 18257 | |
cd9983dd | 18258 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18259 | continue; |
18260 | } | |
18261 | ||
cd9983dd | 18262 | struct partial_die_info *part_die |
6f06d47b | 18263 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18264 | |
72bf9492 DJ |
18265 | /* We'll save this DIE so link it in. */ |
18266 | part_die->die_parent = parent_die; | |
18267 | part_die->die_sibling = NULL; | |
18268 | part_die->die_child = NULL; | |
18269 | ||
18270 | if (last_die && last_die == parent_die) | |
18271 | last_die->die_child = part_die; | |
18272 | else if (last_die) | |
18273 | last_die->die_sibling = part_die; | |
18274 | ||
18275 | last_die = part_die; | |
18276 | ||
18277 | if (first_die == NULL) | |
18278 | first_die = part_die; | |
18279 | ||
18280 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18281 | find interesting need to be in the hash table, because we | |
18282 | also have the parent/sibling/child chains; only those that we | |
18283 | might refer to by offset later during partial symbol reading. | |
18284 | ||
18285 | For now this means things that might have be the target of a | |
18286 | DW_AT_specification, DW_AT_abstract_origin, or | |
18287 | DW_AT_extension. DW_AT_extension will refer only to | |
18288 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18289 | many things under the function DIE, but we do not recurse | |
18290 | into function DIEs during partial symbol reading) and | |
18291 | possibly variables as well; DW_AT_specification refers to | |
18292 | declarations. Declarations ought to have the DW_AT_declaration | |
18293 | flag. It happens that GCC forgets to put it in sometimes, but | |
18294 | only for functions, not for types. | |
18295 | ||
18296 | Adding more things than necessary to the hash table is harmless | |
18297 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18298 | wasted time in find_partial_die, when we reread the compilation |
18299 | unit with load_all_dies set. */ | |
72bf9492 | 18300 | |
5afb4e99 | 18301 | if (load_all |
72929c62 | 18302 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18303 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18304 | || abbrev->tag == DW_TAG_variable |
18305 | || abbrev->tag == DW_TAG_namespace | |
18306 | || part_die->is_declaration) | |
18307 | { | |
18308 | void **slot; | |
18309 | ||
18310 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18311 | to_underlying (part_die->sect_off), |
18312 | INSERT); | |
72bf9492 DJ |
18313 | *slot = part_die; |
18314 | } | |
18315 | ||
72bf9492 | 18316 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18317 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18318 | languages we have to, so that we can get at method physnames |
18319 | to infer fully qualified class names, for DW_AT_specification, | |
18320 | and for C++ template arguments. For C++, we also look one level | |
18321 | inside functions to find template arguments (if the name of the | |
18322 | function does not already contain the template arguments). | |
bc30ff58 | 18323 | |
0a4b0913 AB |
18324 | For Ada and Fortran, we need to scan the children of subprograms |
18325 | and lexical blocks as well because these languages allow the | |
18326 | definition of nested entities that could be interesting for the | |
18327 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18328 | if (last_die->has_children |
5afb4e99 DJ |
18329 | && (load_all |
18330 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18331 | || last_die->tag == DW_TAG_module |
72bf9492 | 18332 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18333 | || (cu->language == language_cplus |
18334 | && last_die->tag == DW_TAG_subprogram | |
18335 | && (last_die->name == NULL | |
18336 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18337 | || (cu->language != language_c |
18338 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18339 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18340 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18341 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18342 | || ((cu->language == language_ada |
18343 | || cu->language == language_fortran) | |
bc30ff58 JB |
18344 | && (last_die->tag == DW_TAG_subprogram |
18345 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18346 | { |
18347 | nesting_level++; | |
18348 | parent_die = last_die; | |
18349 | continue; | |
18350 | } | |
18351 | ||
18352 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18353 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18354 | |
18355 | /* Back to the top, do it again. */ | |
18356 | } | |
18357 | } | |
18358 | ||
6f06d47b YQ |
18359 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18360 | struct abbrev_info *abbrev) | |
18361 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18362 | { | |
18363 | } | |
18364 | ||
35cc7ed7 YQ |
18365 | /* Read a minimal amount of information into the minimal die structure. |
18366 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18367 | |
48fbe735 YQ |
18368 | const gdb_byte * |
18369 | partial_die_info::read (const struct die_reader_specs *reader, | |
18370 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18371 | { |
dee91e82 | 18372 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18373 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18374 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18375 | unsigned int i; |
c5aa993b | 18376 | int has_low_pc_attr = 0; |
c906108c | 18377 | int has_high_pc_attr = 0; |
91da1414 | 18378 | int high_pc_relative = 0; |
c906108c | 18379 | |
18a8505e | 18380 | std::vector<struct attribute> attr_vec (abbrev.num_attrs); |
fd0a254f | 18381 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18382 | { |
18a8505e AT |
18383 | bool need_reprocess; |
18384 | info_ptr = read_attribute (reader, &attr_vec[i], &abbrev.attrs[i], | |
18385 | info_ptr, &need_reprocess); | |
18386 | /* String and address offsets that need to do the reprocessing have | |
18387 | already been read at this point, so there is no need to wait until | |
18388 | the loop terminates to do the reprocessing. */ | |
18389 | if (need_reprocess) | |
18390 | read_attribute_reprocess (reader, &attr_vec[i]); | |
18391 | attribute &attr = attr_vec[i]; | |
c906108c | 18392 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18393 | partial symbol table. */ |
c906108c SS |
18394 | switch (attr.name) |
18395 | { | |
18396 | case DW_AT_name: | |
48fbe735 | 18397 | switch (tag) |
71c25dea TT |
18398 | { |
18399 | case DW_TAG_compile_unit: | |
95554aad | 18400 | case DW_TAG_partial_unit: |
348e048f | 18401 | case DW_TAG_type_unit: |
71c25dea TT |
18402 | /* Compilation units have a DW_AT_name that is a filename, not |
18403 | a source language identifier. */ | |
18404 | case DW_TAG_enumeration_type: | |
18405 | case DW_TAG_enumerator: | |
18406 | /* These tags always have simple identifiers already; no need | |
18407 | to canonicalize them. */ | |
48fbe735 | 18408 | name = DW_STRING (&attr); |
71c25dea TT |
18409 | break; |
18410 | default: | |
48fbe735 YQ |
18411 | { |
18412 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18413 | ||
18414 | name | |
18415 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18416 | &objfile->per_bfd->storage_obstack); | |
18417 | } | |
71c25dea TT |
18418 | break; |
18419 | } | |
c906108c | 18420 | break; |
31ef98ae | 18421 | case DW_AT_linkage_name: |
c906108c | 18422 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18423 | /* Note that both forms of linkage name might appear. We |
18424 | assume they will be the same, and we only store the last | |
18425 | one we see. */ | |
48fbe735 | 18426 | linkage_name = DW_STRING (&attr); |
c906108c SS |
18427 | break; |
18428 | case DW_AT_low_pc: | |
18429 | has_low_pc_attr = 1; | |
cd6c91b4 | 18430 | lowpc = attr.value_as_address (); |
c906108c SS |
18431 | break; |
18432 | case DW_AT_high_pc: | |
18433 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18434 | highpc = attr.value_as_address (); |
18435 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18436 | high_pc_relative = 1; |
c906108c SS |
18437 | break; |
18438 | case DW_AT_location: | |
0963b4bd | 18439 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18440 | if (attr.form_is_block ()) |
8e19ed76 | 18441 | { |
48fbe735 | 18442 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18443 | } |
cd6c91b4 | 18444 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18445 | { |
4d3c2250 | 18446 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18447 | } |
18448 | else | |
18449 | { | |
4d3c2250 KB |
18450 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18451 | "partial symbol information"); | |
8e19ed76 | 18452 | } |
c906108c | 18453 | break; |
c906108c | 18454 | case DW_AT_external: |
48fbe735 | 18455 | is_external = DW_UNSND (&attr); |
c906108c SS |
18456 | break; |
18457 | case DW_AT_declaration: | |
48fbe735 | 18458 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18459 | break; |
18460 | case DW_AT_type: | |
48fbe735 | 18461 | has_type = 1; |
c906108c SS |
18462 | break; |
18463 | case DW_AT_abstract_origin: | |
18464 | case DW_AT_specification: | |
72bf9492 | 18465 | case DW_AT_extension: |
48fbe735 YQ |
18466 | has_specification = 1; |
18467 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18468 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18469 | || cu->per_cu->is_dwz); |
c906108c SS |
18470 | break; |
18471 | case DW_AT_sibling: | |
18472 | /* Ignore absolute siblings, they might point outside of | |
18473 | the current compile unit. */ | |
18474 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18475 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18476 | else |
b9502d3f | 18477 | { |
48fbe735 | 18478 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18479 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18480 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18481 | |
18482 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18483 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18484 | else if (sibling_ptr > reader->buffer_end) |
18485 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18486 | else |
48fbe735 | 18487 | sibling = sibling_ptr; |
b9502d3f | 18488 | } |
c906108c | 18489 | break; |
fa4028e9 | 18490 | case DW_AT_byte_size: |
48fbe735 | 18491 | has_byte_size = 1; |
fa4028e9 | 18492 | break; |
ff908ebf | 18493 | case DW_AT_const_value: |
48fbe735 | 18494 | has_const_value = 1; |
ff908ebf | 18495 | break; |
68511cec CES |
18496 | case DW_AT_calling_convention: |
18497 | /* DWARF doesn't provide a way to identify a program's source-level | |
18498 | entry point. DW_AT_calling_convention attributes are only meant | |
18499 | to describe functions' calling conventions. | |
18500 | ||
18501 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18502 | Fortran, and before DWARF 4 DW_CC_program was the only |
18503 | piece of debugging information whose definition refers to | |
18504 | a 'main program' at all, several compilers marked Fortran | |
18505 | main programs with DW_CC_program --- even when those | |
18506 | functions use the standard calling conventions. | |
18507 | ||
18508 | Although DWARF now specifies a way to provide this | |
18509 | information, we support this practice for backward | |
18510 | compatibility. */ | |
68511cec | 18511 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18512 | && cu->language == language_fortran) |
48fbe735 | 18513 | main_subprogram = 1; |
68511cec | 18514 | break; |
481860b3 GB |
18515 | case DW_AT_inline: |
18516 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18517 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18518 | may_be_inlined = 1; |
481860b3 | 18519 | break; |
95554aad TT |
18520 | |
18521 | case DW_AT_import: | |
48fbe735 | 18522 | if (tag == DW_TAG_imported_unit) |
36586728 | 18523 | { |
48fbe735 YQ |
18524 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18525 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18526 | || cu->per_cu->is_dwz); |
18527 | } | |
95554aad TT |
18528 | break; |
18529 | ||
0c1b455e | 18530 | case DW_AT_main_subprogram: |
48fbe735 | 18531 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18532 | break; |
18533 | ||
05caa1d2 TT |
18534 | case DW_AT_ranges: |
18535 | { | |
18536 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18537 | but that requires a full DIE, so instead we just | |
18538 | reimplement it. */ | |
18539 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18540 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18541 | + (need_ranges_base | |
18542 | ? cu->ranges_base | |
18543 | : 0)); | |
18544 | ||
18545 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18546 | .debug_ranges section. */ | |
18547 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18548 | nullptr)) | |
18549 | has_pc_info = 1; | |
18550 | } | |
18551 | break; | |
18552 | ||
c906108c SS |
18553 | default: |
18554 | break; | |
18555 | } | |
18556 | } | |
18557 | ||
10d06d82 TT |
18558 | /* For Ada, if both the name and the linkage name appear, we prefer |
18559 | the latter. This lets "catch exception" work better, regardless | |
18560 | of the order in which the name and linkage name were emitted. | |
18561 | Really, though, this is just a workaround for the fact that gdb | |
18562 | doesn't store both the name and the linkage name. */ | |
18563 | if (cu->language == language_ada && linkage_name != nullptr) | |
18564 | name = linkage_name; | |
18565 | ||
91da1414 | 18566 | if (high_pc_relative) |
48fbe735 | 18567 | highpc += lowpc; |
91da1414 | 18568 | |
9373cf26 JK |
18569 | if (has_low_pc_attr && has_high_pc_attr) |
18570 | { | |
18571 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18572 | eliminate duplicate copies of functions and vtables and such. | |
18573 | The linker will arbitrarily choose one and discard the others. | |
18574 | The AT_*_pc values for such functions refer to local labels in | |
18575 | these sections. If the section from that file was discarded, the | |
18576 | labels are not in the output, so the relocs get a value of 0. | |
18577 | If this is a discarded function, mark the pc bounds as invalid, | |
18578 | so that GDB will ignore it. */ | |
48fbe735 | 18579 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18580 | { |
48fbe735 | 18581 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18582 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18583 | |
b98664d3 | 18584 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18585 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18586 | paddress (gdbarch, lowpc), |
18587 | sect_offset_str (sect_off), | |
9d8780f0 | 18588 | objfile_name (objfile)); |
9373cf26 JK |
18589 | } |
18590 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18591 | else if (lowpc >= highpc) |
9373cf26 | 18592 | { |
48fbe735 | 18593 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18594 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18595 | |
b98664d3 | 18596 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18597 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18598 | paddress (gdbarch, lowpc), |
18599 | paddress (gdbarch, highpc), | |
18600 | sect_offset_str (sect_off), | |
9c541725 | 18601 | objfile_name (objfile)); |
9373cf26 JK |
18602 | } |
18603 | else | |
48fbe735 | 18604 | has_pc_info = 1; |
9373cf26 | 18605 | } |
85cbf3d3 | 18606 | |
c906108c SS |
18607 | return info_ptr; |
18608 | } | |
18609 | ||
72bf9492 DJ |
18610 | /* Find a cached partial DIE at OFFSET in CU. */ |
18611 | ||
d590ff25 YQ |
18612 | struct partial_die_info * |
18613 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18614 | { |
18615 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18616 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18617 | |
9a3c8263 | 18618 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18619 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18620 | to_underlying (sect_off))); |
72bf9492 | 18621 | |
72bf9492 DJ |
18622 | return lookup_die; |
18623 | } | |
18624 | ||
348e048f DE |
18625 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18626 | except in the case of .debug_types DIEs which do not reference | |
18627 | outside their CU (they do however referencing other types via | |
55f1336d | 18628 | DW_FORM_ref_sig8). */ |
72bf9492 | 18629 | |
122cf0f2 | 18630 | static const struct cu_partial_die_info |
9c541725 | 18631 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18632 | { |
518817b3 SM |
18633 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18634 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18635 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18636 | struct dwarf2_per_cu_data *per_cu = NULL; |
18637 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18638 | |
36586728 | 18639 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18640 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18641 | { |
d590ff25 | 18642 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18643 | if (pd != NULL) |
fb816e8b | 18644 | return { cu, pd }; |
0d99eb77 DE |
18645 | /* We missed recording what we needed. |
18646 | Load all dies and try again. */ | |
18647 | per_cu = cu->per_cu; | |
5afb4e99 | 18648 | } |
0d99eb77 DE |
18649 | else |
18650 | { | |
18651 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18652 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18653 | { |
9d8780f0 SM |
18654 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18655 | " external reference to offset %s [in module %s].\n"), | |
18656 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18657 | bfd_get_filename (objfile->obfd)); |
18658 | } | |
9c541725 | 18659 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18660 | dwarf2_per_objfile); |
72bf9492 | 18661 | |
0d99eb77 DE |
18662 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18663 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18664 | |
0d99eb77 | 18665 | per_cu->cu->last_used = 0; |
d590ff25 | 18666 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18667 | } |
5afb4e99 | 18668 | |
dee91e82 DE |
18669 | /* If we didn't find it, and not all dies have been loaded, |
18670 | load them all and try again. */ | |
18671 | ||
5afb4e99 DJ |
18672 | if (pd == NULL && per_cu->load_all_dies == 0) |
18673 | { | |
5afb4e99 | 18674 | per_cu->load_all_dies = 1; |
fd820528 DE |
18675 | |
18676 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18677 | THIS_CU->cu may already be in use. So we can't just free it and | |
18678 | replace its DIEs with the ones we read in. Instead, we leave those | |
18679 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18680 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18681 | set. */ | |
dee91e82 | 18682 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18683 | |
d590ff25 | 18684 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18685 | } |
18686 | ||
18687 | if (pd == NULL) | |
18688 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18689 | _("could not find partial DIE %s " |
3e43a32a | 18690 | "in cache [from module %s]\n"), |
9d8780f0 | 18691 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18692 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18693 | } |
18694 | ||
abc72ce4 DE |
18695 | /* See if we can figure out if the class lives in a namespace. We do |
18696 | this by looking for a member function; its demangled name will | |
18697 | contain namespace info, if there is any. */ | |
18698 | ||
18699 | static void | |
18700 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18701 | struct dwarf2_cu *cu) | |
18702 | { | |
18703 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18704 | what template types look like, because the demangler | |
18705 | frequently doesn't give the same name as the debug info. We | |
18706 | could fix this by only using the demangled name to get the | |
18707 | prefix (but see comment in read_structure_type). */ | |
18708 | ||
18709 | struct partial_die_info *real_pdi; | |
18710 | struct partial_die_info *child_pdi; | |
18711 | ||
18712 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18713 | we should not do this. We'll prepend the parent's fully qualified | |
18714 | name when we create the partial symbol. */ | |
18715 | ||
18716 | real_pdi = struct_pdi; | |
18717 | while (real_pdi->has_specification) | |
fb816e8b | 18718 | { |
122cf0f2 AB |
18719 | auto res = find_partial_die (real_pdi->spec_offset, |
18720 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18721 | real_pdi = res.pdi; |
18722 | cu = res.cu; | |
18723 | } | |
abc72ce4 DE |
18724 | |
18725 | if (real_pdi->die_parent != NULL) | |
18726 | return; | |
18727 | ||
18728 | for (child_pdi = struct_pdi->die_child; | |
18729 | child_pdi != NULL; | |
18730 | child_pdi = child_pdi->die_sibling) | |
18731 | { | |
18732 | if (child_pdi->tag == DW_TAG_subprogram | |
18733 | && child_pdi->linkage_name != NULL) | |
18734 | { | |
43816ebc TT |
18735 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18736 | (language_class_name_from_physname (cu->language_defn, | |
18737 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18738 | if (actual_class_name != NULL) |
18739 | { | |
518817b3 | 18740 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18741 | struct_pdi->name |
021887d8 | 18742 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 18743 | actual_class_name.get ()); |
abc72ce4 DE |
18744 | } |
18745 | break; | |
18746 | } | |
18747 | } | |
18748 | } | |
18749 | ||
52356b79 YQ |
18750 | void |
18751 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18752 | { |
abc72ce4 DE |
18753 | /* Once we've fixed up a die, there's no point in doing so again. |
18754 | This also avoids a memory leak if we were to call | |
18755 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18756 | if (fixup_called) |
abc72ce4 DE |
18757 | return; |
18758 | ||
72bf9492 DJ |
18759 | /* If we found a reference attribute and the DIE has no name, try |
18760 | to find a name in the referred to DIE. */ | |
18761 | ||
52356b79 | 18762 | if (name == NULL && has_specification) |
72bf9492 DJ |
18763 | { |
18764 | struct partial_die_info *spec_die; | |
72bf9492 | 18765 | |
122cf0f2 | 18766 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18767 | spec_die = res.pdi; |
18768 | cu = res.cu; | |
72bf9492 | 18769 | |
52356b79 | 18770 | spec_die->fixup (cu); |
72bf9492 DJ |
18771 | |
18772 | if (spec_die->name) | |
18773 | { | |
52356b79 | 18774 | name = spec_die->name; |
72bf9492 DJ |
18775 | |
18776 | /* Copy DW_AT_external attribute if it is set. */ | |
18777 | if (spec_die->is_external) | |
52356b79 | 18778 | is_external = spec_die->is_external; |
72bf9492 DJ |
18779 | } |
18780 | } | |
18781 | ||
18782 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18783 | |
52356b79 YQ |
18784 | if (name == NULL && tag == DW_TAG_namespace) |
18785 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18786 | |
abc72ce4 DE |
18787 | /* If there is no parent die to provide a namespace, and there are |
18788 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18789 | name. */ |
abc72ce4 | 18790 | if (cu->language == language_cplus |
fd5866f6 | 18791 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18792 | && die_parent == NULL |
18793 | && has_children | |
18794 | && (tag == DW_TAG_class_type | |
18795 | || tag == DW_TAG_structure_type | |
18796 | || tag == DW_TAG_union_type)) | |
18797 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18798 | |
53832f31 TT |
18799 | /* GCC might emit a nameless struct or union that has a linkage |
18800 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18801 | if (name == NULL |
18802 | && (tag == DW_TAG_class_type | |
18803 | || tag == DW_TAG_interface_type | |
18804 | || tag == DW_TAG_structure_type | |
18805 | || tag == DW_TAG_union_type) | |
18806 | && linkage_name != NULL) | |
53832f31 | 18807 | { |
43816ebc TT |
18808 | gdb::unique_xmalloc_ptr<char> demangled |
18809 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18810 | if (demangled != nullptr) | |
53832f31 | 18811 | { |
96408a79 SA |
18812 | const char *base; |
18813 | ||
18814 | /* Strip any leading namespaces/classes, keep only the base name. | |
18815 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18816 | base = strrchr (demangled.get (), ':'); |
18817 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18818 | base++; |
18819 | else | |
43816ebc | 18820 | base = demangled.get (); |
96408a79 | 18821 | |
518817b3 | 18822 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
021887d8 | 18823 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, base); |
53832f31 TT |
18824 | } |
18825 | } | |
18826 | ||
52356b79 | 18827 | fixup_called = 1; |
72bf9492 DJ |
18828 | } |
18829 | ||
18a8505e AT |
18830 | /* Process the attributes that had to be skipped in the first round. These |
18831 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18832 | They could not have been processed in the first round, because at the time | |
18833 | the values of str_offsets_base or addr_base may not have been known. */ | |
18834 | void read_attribute_reprocess (const struct die_reader_specs *reader, | |
18835 | struct attribute *attr) | |
18836 | { | |
18837 | struct dwarf2_cu *cu = reader->cu; | |
18838 | switch (attr->form) | |
18839 | { | |
18840 | case DW_FORM_addrx: | |
18841 | case DW_FORM_GNU_addr_index: | |
18842 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18843 | break; | |
18844 | case DW_FORM_strx: | |
18845 | case DW_FORM_strx1: | |
18846 | case DW_FORM_strx2: | |
18847 | case DW_FORM_strx3: | |
18848 | case DW_FORM_strx4: | |
18849 | case DW_FORM_GNU_str_index: | |
18850 | { | |
18851 | unsigned int str_index = DW_UNSND (attr); | |
18852 | if (reader->dwo_file != NULL) | |
18853 | { | |
18854 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18855 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18856 | } | |
18857 | else | |
18858 | { | |
18859 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18860 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18861 | } | |
18862 | break; | |
18863 | } | |
18864 | default: | |
18865 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18866 | } | |
18867 | } | |
18868 | ||
a8329558 | 18869 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18870 | |
d521ce57 | 18871 | static const gdb_byte * |
dee91e82 DE |
18872 | read_attribute_value (const struct die_reader_specs *reader, |
18873 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18874 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18875 | bool *need_reprocess) | |
c906108c | 18876 | { |
dee91e82 | 18877 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18878 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18879 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18880 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18881 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18882 | bfd *abfd = reader->abfd; |
e7c27a73 | 18883 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18884 | unsigned int bytes_read; |
18885 | struct dwarf_block *blk; | |
18a8505e | 18886 | *need_reprocess = false; |
c906108c | 18887 | |
aead7601 | 18888 | attr->form = (enum dwarf_form) form; |
a8329558 | 18889 | switch (form) |
c906108c | 18890 | { |
c906108c | 18891 | case DW_FORM_ref_addr: |
ae411497 | 18892 | if (cu->header.version == 2) |
4568ecf9 | 18893 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 18894 | else |
4568ecf9 DE |
18895 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
18896 | &cu->header, &bytes_read); | |
ae411497 TT |
18897 | info_ptr += bytes_read; |
18898 | break; | |
36586728 TT |
18899 | case DW_FORM_GNU_ref_alt: |
18900 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18901 | info_ptr += bytes_read; | |
18902 | break; | |
ae411497 | 18903 | case DW_FORM_addr: |
e7c27a73 | 18904 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 18905 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18906 | info_ptr += bytes_read; |
c906108c SS |
18907 | break; |
18908 | case DW_FORM_block2: | |
7b5a2f43 | 18909 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18910 | blk->size = read_2_bytes (abfd, info_ptr); |
18911 | info_ptr += 2; | |
18912 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18913 | info_ptr += blk->size; | |
18914 | DW_BLOCK (attr) = blk; | |
18915 | break; | |
18916 | case DW_FORM_block4: | |
7b5a2f43 | 18917 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18918 | blk->size = read_4_bytes (abfd, info_ptr); |
18919 | info_ptr += 4; | |
18920 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18921 | info_ptr += blk->size; | |
18922 | DW_BLOCK (attr) = blk; | |
18923 | break; | |
18924 | case DW_FORM_data2: | |
18925 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18926 | info_ptr += 2; | |
18927 | break; | |
18928 | case DW_FORM_data4: | |
18929 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18930 | info_ptr += 4; | |
18931 | break; | |
18932 | case DW_FORM_data8: | |
18933 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18934 | info_ptr += 8; | |
18935 | break; | |
0224619f JK |
18936 | case DW_FORM_data16: |
18937 | blk = dwarf_alloc_block (cu); | |
18938 | blk->size = 16; | |
18939 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18940 | info_ptr += 16; | |
18941 | DW_BLOCK (attr) = blk; | |
18942 | break; | |
2dc7f7b3 TT |
18943 | case DW_FORM_sec_offset: |
18944 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18945 | info_ptr += bytes_read; | |
18946 | break; | |
c906108c | 18947 | case DW_FORM_string: |
9b1c24c8 | 18948 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18949 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18950 | info_ptr += bytes_read; |
18951 | break; | |
4bdf3d34 | 18952 | case DW_FORM_strp: |
36586728 TT |
18953 | if (!cu->per_cu->is_dwz) |
18954 | { | |
ed2dc618 SM |
18955 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18956 | abfd, info_ptr, cu_header, | |
36586728 TT |
18957 | &bytes_read); |
18958 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18959 | info_ptr += bytes_read; | |
18960 | break; | |
18961 | } | |
18962 | /* FALLTHROUGH */ | |
43988095 JK |
18963 | case DW_FORM_line_strp: |
18964 | if (!cu->per_cu->is_dwz) | |
18965 | { | |
ed2dc618 SM |
18966 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
18967 | abfd, info_ptr, | |
43988095 JK |
18968 | cu_header, &bytes_read); |
18969 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18970 | info_ptr += bytes_read; | |
18971 | break; | |
18972 | } | |
18973 | /* FALLTHROUGH */ | |
36586728 TT |
18974 | case DW_FORM_GNU_strp_alt: |
18975 | { | |
ed2dc618 | 18976 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
18977 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
18978 | &bytes_read); | |
18979 | ||
ed2dc618 SM |
18980 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
18981 | dwz, str_offset); | |
36586728 TT |
18982 | DW_STRING_IS_CANONICAL (attr) = 0; |
18983 | info_ptr += bytes_read; | |
18984 | } | |
4bdf3d34 | 18985 | break; |
2dc7f7b3 | 18986 | case DW_FORM_exprloc: |
c906108c | 18987 | case DW_FORM_block: |
7b5a2f43 | 18988 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18989 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18990 | info_ptr += bytes_read; | |
18991 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18992 | info_ptr += blk->size; | |
18993 | DW_BLOCK (attr) = blk; | |
18994 | break; | |
18995 | case DW_FORM_block1: | |
7b5a2f43 | 18996 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18997 | blk->size = read_1_byte (abfd, info_ptr); |
18998 | info_ptr += 1; | |
18999 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19000 | info_ptr += blk->size; | |
19001 | DW_BLOCK (attr) = blk; | |
19002 | break; | |
19003 | case DW_FORM_data1: | |
19004 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19005 | info_ptr += 1; | |
19006 | break; | |
19007 | case DW_FORM_flag: | |
19008 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19009 | info_ptr += 1; | |
19010 | break; | |
2dc7f7b3 TT |
19011 | case DW_FORM_flag_present: |
19012 | DW_UNSND (attr) = 1; | |
19013 | break; | |
c906108c SS |
19014 | case DW_FORM_sdata: |
19015 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19016 | info_ptr += bytes_read; | |
19017 | break; | |
19018 | case DW_FORM_udata: | |
18a8505e | 19019 | case DW_FORM_rnglistx: |
c906108c SS |
19020 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19021 | info_ptr += bytes_read; | |
19022 | break; | |
19023 | case DW_FORM_ref1: | |
9c541725 | 19024 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19025 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19026 | info_ptr += 1; |
19027 | break; | |
19028 | case DW_FORM_ref2: | |
9c541725 | 19029 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19030 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19031 | info_ptr += 2; |
19032 | break; | |
19033 | case DW_FORM_ref4: | |
9c541725 | 19034 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19035 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19036 | info_ptr += 4; |
19037 | break; | |
613e1657 | 19038 | case DW_FORM_ref8: |
9c541725 | 19039 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19040 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19041 | info_ptr += 8; |
19042 | break; | |
55f1336d | 19043 | case DW_FORM_ref_sig8: |
ac9ec31b | 19044 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19045 | info_ptr += 8; |
19046 | break; | |
c906108c | 19047 | case DW_FORM_ref_udata: |
9c541725 | 19048 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19049 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19050 | info_ptr += bytes_read; |
19051 | break; | |
c906108c | 19052 | case DW_FORM_indirect: |
a8329558 KW |
19053 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19054 | info_ptr += bytes_read; | |
43988095 JK |
19055 | if (form == DW_FORM_implicit_const) |
19056 | { | |
19057 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19058 | info_ptr += bytes_read; | |
19059 | } | |
19060 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19061 | info_ptr, need_reprocess); |
43988095 JK |
19062 | break; |
19063 | case DW_FORM_implicit_const: | |
19064 | DW_SND (attr) = implicit_const; | |
a8329558 | 19065 | break; |
336d760d | 19066 | case DW_FORM_addrx: |
3019eac3 | 19067 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19068 | *need_reprocess = true; |
19069 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19070 | info_ptr += bytes_read; |
19071 | break; | |
cf532bd1 | 19072 | case DW_FORM_strx: |
15f18d14 AT |
19073 | case DW_FORM_strx1: |
19074 | case DW_FORM_strx2: | |
19075 | case DW_FORM_strx3: | |
19076 | case DW_FORM_strx4: | |
3019eac3 | 19077 | case DW_FORM_GNU_str_index: |
3019eac3 | 19078 | { |
15f18d14 AT |
19079 | ULONGEST str_index; |
19080 | if (form == DW_FORM_strx1) | |
19081 | { | |
19082 | str_index = read_1_byte (abfd, info_ptr); | |
19083 | info_ptr += 1; | |
19084 | } | |
19085 | else if (form == DW_FORM_strx2) | |
19086 | { | |
19087 | str_index = read_2_bytes (abfd, info_ptr); | |
19088 | info_ptr += 2; | |
19089 | } | |
19090 | else if (form == DW_FORM_strx3) | |
19091 | { | |
19092 | str_index = read_3_bytes (abfd, info_ptr); | |
19093 | info_ptr += 3; | |
19094 | } | |
19095 | else if (form == DW_FORM_strx4) | |
19096 | { | |
19097 | str_index = read_4_bytes (abfd, info_ptr); | |
19098 | info_ptr += 4; | |
19099 | } | |
19100 | else | |
19101 | { | |
19102 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19103 | info_ptr += bytes_read; | |
19104 | } | |
18a8505e AT |
19105 | *need_reprocess = true; |
19106 | DW_UNSND (attr) = str_index; | |
19107 | } | |
3019eac3 | 19108 | break; |
c906108c | 19109 | default: |
8a3fe4f8 | 19110 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19111 | dwarf_form_name (form), |
19112 | bfd_get_filename (abfd)); | |
c906108c | 19113 | } |
28e94949 | 19114 | |
36586728 | 19115 | /* Super hack. */ |
cd6c91b4 | 19116 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19117 | attr->form = DW_FORM_GNU_ref_alt; |
19118 | ||
28e94949 JB |
19119 | /* We have seen instances where the compiler tried to emit a byte |
19120 | size attribute of -1 which ended up being encoded as an unsigned | |
19121 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19122 | an object of this size seems pretty unlikely so we can relatively | |
19123 | safely treat these cases as if the size attribute was invalid and | |
19124 | treat them as zero by default. */ | |
19125 | if (attr->name == DW_AT_byte_size | |
19126 | && form == DW_FORM_data4 | |
19127 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19128 | { |
19129 | complaint | |
b98664d3 | 19130 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19131 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19132 | DW_UNSND (attr) = 0; |
19133 | } | |
28e94949 | 19134 | |
c906108c SS |
19135 | return info_ptr; |
19136 | } | |
19137 | ||
a8329558 KW |
19138 | /* Read an attribute described by an abbreviated attribute. */ |
19139 | ||
d521ce57 | 19140 | static const gdb_byte * |
dee91e82 DE |
19141 | read_attribute (const struct die_reader_specs *reader, |
19142 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19143 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19144 | { |
19145 | attr->name = abbrev->name; | |
43988095 | 19146 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19147 | abbrev->implicit_const, info_ptr, |
19148 | need_reprocess); | |
a8329558 KW |
19149 | } |
19150 | ||
c906108c | 19151 | static CORE_ADDR |
d521ce57 | 19152 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19153 | unsigned int *bytes_read) |
c906108c | 19154 | { |
e7c27a73 | 19155 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19156 | CORE_ADDR retval = 0; |
19157 | ||
107d2387 | 19158 | if (cu_header->signed_addr_p) |
c906108c | 19159 | { |
107d2387 AC |
19160 | switch (cu_header->addr_size) |
19161 | { | |
19162 | case 2: | |
fe1b8b76 | 19163 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19164 | break; |
19165 | case 4: | |
fe1b8b76 | 19166 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19167 | break; |
19168 | case 8: | |
fe1b8b76 | 19169 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19170 | break; |
19171 | default: | |
8e65ff28 | 19172 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19173 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19174 | bfd_get_filename (abfd)); |
107d2387 AC |
19175 | } |
19176 | } | |
19177 | else | |
19178 | { | |
19179 | switch (cu_header->addr_size) | |
19180 | { | |
19181 | case 2: | |
fe1b8b76 | 19182 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19183 | break; |
19184 | case 4: | |
fe1b8b76 | 19185 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19186 | break; |
19187 | case 8: | |
fe1b8b76 | 19188 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19189 | break; |
19190 | default: | |
8e65ff28 | 19191 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19192 | _("read_address: bad switch, " |
19193 | "unsigned [in module %s]"), | |
659b0389 | 19194 | bfd_get_filename (abfd)); |
107d2387 | 19195 | } |
c906108c | 19196 | } |
64367e0a | 19197 | |
107d2387 AC |
19198 | *bytes_read = cu_header->addr_size; |
19199 | return retval; | |
c906108c SS |
19200 | } |
19201 | ||
f7ef9339 | 19202 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19203 | specification allows the initial length to take up either 4 bytes |
19204 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19205 | bytes describe the length and all offsets will be 8 bytes in length | |
19206 | instead of 4. | |
19207 | ||
f7ef9339 KB |
19208 | An older, non-standard 64-bit format is also handled by this |
19209 | function. The older format in question stores the initial length | |
19210 | as an 8-byte quantity without an escape value. Lengths greater | |
19211 | than 2^32 aren't very common which means that the initial 4 bytes | |
19212 | is almost always zero. Since a length value of zero doesn't make | |
19213 | sense for the 32-bit format, this initial zero can be considered to | |
19214 | be an escape value which indicates the presence of the older 64-bit | |
19215 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19216 | greater than 4GB. If it becomes necessary to handle lengths |
19217 | somewhat larger than 4GB, we could allow other small values (such | |
19218 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19219 | escape values indicating the presence of the old format. | |
f7ef9339 | 19220 | |
917c78fc MK |
19221 | The value returned via bytes_read should be used to increment the |
19222 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19223 | |
613e1657 KB |
19224 | [ Note: read_initial_length() and read_offset() are based on the |
19225 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19226 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19227 | from: |
19228 | ||
f7ef9339 | 19229 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19230 | |
613e1657 KB |
19231 | This document is only a draft and is subject to change. (So beware.) |
19232 | ||
f7ef9339 | 19233 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19234 | determined empirically by examining 64-bit ELF files produced by |
19235 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19236 | |
19237 | - Kevin, July 16, 2002 | |
613e1657 KB |
19238 | ] */ |
19239 | ||
19240 | static LONGEST | |
d521ce57 | 19241 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19242 | { |
fe1b8b76 | 19243 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19244 | |
dd373385 | 19245 | if (length == 0xffffffff) |
613e1657 | 19246 | { |
fe1b8b76 | 19247 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19248 | *bytes_read = 12; |
613e1657 | 19249 | } |
dd373385 | 19250 | else if (length == 0) |
f7ef9339 | 19251 | { |
dd373385 | 19252 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19253 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19254 | *bytes_read = 8; |
f7ef9339 | 19255 | } |
613e1657 KB |
19256 | else |
19257 | { | |
19258 | *bytes_read = 4; | |
613e1657 KB |
19259 | } |
19260 | ||
c764a876 DE |
19261 | return length; |
19262 | } | |
dd373385 | 19263 | |
c764a876 DE |
19264 | /* Cover function for read_initial_length. |
19265 | Returns the length of the object at BUF, and stores the size of the | |
19266 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19267 | *OFFSET_SIZE. | |
19268 | If the initial length size is not equivalent to that specified in | |
19269 | CU_HEADER then issue a complaint. | |
19270 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19271 | |
c764a876 | 19272 | static LONGEST |
d521ce57 | 19273 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19274 | const struct comp_unit_head *cu_header, |
19275 | unsigned int *bytes_read, | |
19276 | unsigned int *offset_size) | |
19277 | { | |
19278 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19279 | ||
19280 | gdb_assert (cu_header->initial_length_size == 4 | |
19281 | || cu_header->initial_length_size == 8 | |
19282 | || cu_header->initial_length_size == 12); | |
19283 | ||
19284 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19285 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19286 | |
c764a876 | 19287 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19288 | return length; |
613e1657 KB |
19289 | } |
19290 | ||
19291 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19292 | given by cu_header->offset_size. */ |
613e1657 KB |
19293 | |
19294 | static LONGEST | |
d521ce57 TT |
19295 | read_offset (bfd *abfd, const gdb_byte *buf, |
19296 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19297 | unsigned int *bytes_read) |
c764a876 DE |
19298 | { |
19299 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19300 | |
c764a876 DE |
19301 | *bytes_read = cu_header->offset_size; |
19302 | return offset; | |
19303 | } | |
19304 | ||
19305 | /* Read an offset from the data stream. */ | |
19306 | ||
19307 | static LONGEST | |
d521ce57 | 19308 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19309 | { |
19310 | LONGEST retval = 0; | |
19311 | ||
c764a876 | 19312 | switch (offset_size) |
613e1657 KB |
19313 | { |
19314 | case 4: | |
fe1b8b76 | 19315 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19316 | break; |
19317 | case 8: | |
fe1b8b76 | 19318 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19319 | break; |
19320 | default: | |
8e65ff28 | 19321 | internal_error (__FILE__, __LINE__, |
c764a876 | 19322 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19323 | bfd_get_filename (abfd)); |
613e1657 KB |
19324 | } |
19325 | ||
917c78fc | 19326 | return retval; |
613e1657 KB |
19327 | } |
19328 | ||
d521ce57 TT |
19329 | static const gdb_byte * |
19330 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19331 | { |
19332 | /* If the size of a host char is 8 bits, we can return a pointer | |
19333 | to the buffer, otherwise we have to copy the data to a buffer | |
19334 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19335 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19336 | return buf; |
c906108c SS |
19337 | } |
19338 | ||
d521ce57 TT |
19339 | static const char * |
19340 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19341 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19342 | { |
19343 | /* If the size of a host char is 8 bits, we can return a pointer | |
19344 | to the string, otherwise we have to copy the string to a buffer | |
19345 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19346 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19347 | if (*buf == '\0') |
19348 | { | |
19349 | *bytes_read_ptr = 1; | |
19350 | return NULL; | |
19351 | } | |
d521ce57 TT |
19352 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19353 | return (const char *) buf; | |
4bdf3d34 JJ |
19354 | } |
19355 | ||
43988095 JK |
19356 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19357 | reporting strings FORM_NAME and SECT_NAME. */ | |
19358 | ||
d521ce57 | 19359 | static const char * |
ed2dc618 SM |
19360 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19361 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19362 | struct dwarf2_section_info *sect, |
19363 | const char *form_name, | |
19364 | const char *sect_name) | |
19365 | { | |
96b79293 | 19366 | sect->read (objfile); |
43988095 JK |
19367 | if (sect->buffer == NULL) |
19368 | error (_("%s used without %s section [in module %s]"), | |
19369 | form_name, sect_name, bfd_get_filename (abfd)); | |
19370 | if (str_offset >= sect->size) | |
19371 | error (_("%s pointing outside of %s section [in module %s]"), | |
19372 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19373 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19374 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19375 | return NULL; |
43988095 JK |
19376 | return (const char *) (sect->buffer + str_offset); |
19377 | } | |
19378 | ||
19379 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19380 | ||
19381 | static const char * | |
ed2dc618 SM |
19382 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19383 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19384 | { |
ed2dc618 SM |
19385 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19386 | abfd, str_offset, | |
43988095 JK |
19387 | &dwarf2_per_objfile->str, |
19388 | "DW_FORM_strp", ".debug_str"); | |
19389 | } | |
19390 | ||
19391 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19392 | ||
19393 | static const char * | |
ed2dc618 SM |
19394 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19395 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19396 | { |
ed2dc618 SM |
19397 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19398 | abfd, str_offset, | |
43988095 JK |
19399 | &dwarf2_per_objfile->line_str, |
19400 | "DW_FORM_line_strp", | |
19401 | ".debug_line_str"); | |
c906108c SS |
19402 | } |
19403 | ||
36586728 TT |
19404 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19405 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19406 | the string consists of a single NUL byte, return NULL; otherwise | |
19407 | return a pointer to the string. */ | |
19408 | ||
d521ce57 | 19409 | static const char * |
ed2dc618 SM |
19410 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19411 | LONGEST str_offset) | |
36586728 | 19412 | { |
96b79293 | 19413 | dwz->str.read (objfile); |
36586728 TT |
19414 | |
19415 | if (dwz->str.buffer == NULL) | |
19416 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19417 | "section [in module %s]"), | |
00f93c44 | 19418 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19419 | if (str_offset >= dwz->str.size) |
19420 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19421 | ".debug_str section [in module %s]"), | |
00f93c44 | 19422 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
19423 | gdb_assert (HOST_CHAR_BIT == 8); |
19424 | if (dwz->str.buffer[str_offset] == '\0') | |
19425 | return NULL; | |
d521ce57 | 19426 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19427 | } |
19428 | ||
43988095 JK |
19429 | /* Return pointer to string at .debug_str offset as read from BUF. |
19430 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19431 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19432 | ||
d521ce57 | 19433 | static const char * |
ed2dc618 SM |
19434 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19435 | const gdb_byte *buf, | |
cf2c3c16 TT |
19436 | const struct comp_unit_head *cu_header, |
19437 | unsigned int *bytes_read_ptr) | |
19438 | { | |
19439 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19440 | ||
ed2dc618 | 19441 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19442 | } |
19443 | ||
43988095 JK |
19444 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19445 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19446 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19447 | ||
19448 | static const char * | |
ed2dc618 SM |
19449 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19450 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19451 | const struct comp_unit_head *cu_header, |
19452 | unsigned int *bytes_read_ptr) | |
19453 | { | |
19454 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19455 | ||
ed2dc618 SM |
19456 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19457 | str_offset); | |
43988095 JK |
19458 | } |
19459 | ||
3019eac3 | 19460 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19461 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19462 | ADDR_SIZE is the size of addresses from the CU header. */ |
19463 | ||
19464 | static CORE_ADDR | |
ed2dc618 | 19465 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19466 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19467 | int addr_size) | |
3019eac3 DE |
19468 | { |
19469 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19470 | bfd *abfd = objfile->obfd; | |
19471 | const gdb_byte *info_ptr; | |
18a8505e | 19472 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19473 | |
96b79293 | 19474 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
19475 | if (dwarf2_per_objfile->addr.buffer == NULL) |
19476 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19477 | objfile_name (objfile)); |
18a8505e AT |
19478 | if (addr_base_or_zero + addr_index * addr_size |
19479 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
19480 | error (_("DW_FORM_addr_index pointing outside of " |
19481 | ".debug_addr section [in module %s]"), | |
4262abfb | 19482 | objfile_name (objfile)); |
3019eac3 | 19483 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 19484 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19485 | if (addr_size == 4) |
19486 | return bfd_get_32 (abfd, info_ptr); | |
19487 | else | |
19488 | return bfd_get_64 (abfd, info_ptr); | |
19489 | } | |
19490 | ||
19491 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19492 | ||
19493 | static CORE_ADDR | |
19494 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19495 | { | |
518817b3 SM |
19496 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19497 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19498 | } |
19499 | ||
19500 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19501 | ||
19502 | static CORE_ADDR | |
d521ce57 | 19503 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19504 | unsigned int *bytes_read) |
19505 | { | |
518817b3 | 19506 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19507 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19508 | ||
19509 | return read_addr_index (cu, addr_index); | |
19510 | } | |
19511 | ||
3019eac3 DE |
19512 | /* Given an index in .debug_addr, fetch the value. |
19513 | NOTE: This can be called during dwarf expression evaluation, | |
19514 | long after the debug information has been read, and thus per_cu->cu | |
19515 | may no longer exist. */ | |
19516 | ||
19517 | CORE_ADDR | |
19518 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19519 | unsigned int addr_index) | |
19520 | { | |
ed2dc618 | 19521 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 19522 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 19523 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19524 | int addr_size; |
19525 | ||
3019eac3 DE |
19526 | /* We need addr_base and addr_size. |
19527 | If we don't have PER_CU->cu, we have to get it. | |
19528 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19529 | which at this point doesn't seem justified: it's not clear how frequently | |
19530 | it would get used and it would increase the size of every PER_CU. | |
19531 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19532 | so we're not in uncharted territory here. | |
19533 | Alas we need to be a bit more complicated as addr_base is contained | |
19534 | in the DIE. | |
19535 | ||
19536 | We don't need to read the entire CU(/TU). | |
19537 | We just need the header and top level die. | |
a1b64ce1 | 19538 | |
3019eac3 | 19539 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19540 | For now we skip this optimization. */ |
3019eac3 DE |
19541 | |
19542 | if (cu != NULL) | |
19543 | { | |
19544 | addr_base = cu->addr_base; | |
19545 | addr_size = cu->header.addr_size; | |
19546 | } | |
19547 | else | |
19548 | { | |
c0ab21c2 TT |
19549 | cutu_reader reader (per_cu, NULL, 0, 0, false); |
19550 | addr_base = reader.cu->addr_base; | |
19551 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19552 | } |
19553 | ||
ed2dc618 SM |
19554 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19555 | addr_size); | |
3019eac3 DE |
19556 | } |
19557 | ||
18a8505e AT |
19558 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19559 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19560 | DWO file. */ | |
3019eac3 | 19561 | |
d521ce57 | 19562 | static const char * |
18a8505e AT |
19563 | read_str_index (struct dwarf2_cu *cu, |
19564 | struct dwarf2_section_info *str_section, | |
19565 | struct dwarf2_section_info *str_offsets_section, | |
19566 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19567 | { |
518817b3 SM |
19568 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19569 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19570 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19571 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19572 | bfd *abfd = objfile->obfd; |
d521ce57 | 19573 | const gdb_byte *info_ptr; |
3019eac3 | 19574 | ULONGEST str_offset; |
cf532bd1 | 19575 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19576 | |
96b79293 TT |
19577 | str_section->read (objfile); |
19578 | str_offsets_section->read (objfile); | |
73869dc2 | 19579 | if (str_section->buffer == NULL) |
18a8505e | 19580 | error (_("%s used without %s section" |
9d8780f0 | 19581 | " in CU at offset %s [in module %s]"), |
96b79293 | 19582 | form_name, str_section->get_name (), |
18a8505e | 19583 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19584 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19585 | error (_("%s used without %s section" |
9d8780f0 | 19586 | " in CU at offset %s [in module %s]"), |
96b79293 | 19587 | form_name, str_section->get_name (), |
18a8505e | 19588 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19589 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19590 | + str_offsets_base |
3019eac3 DE |
19591 | + str_index * cu->header.offset_size); |
19592 | if (cu->header.offset_size == 4) | |
19593 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19594 | else | |
19595 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19596 | if (str_offset >= str_section->size) |
57d63ce2 | 19597 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19598 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19599 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19600 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19601 | } |
19602 | ||
18a8505e AT |
19603 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19604 | ||
19605 | static const char * | |
19606 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19607 | { | |
19608 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19609 | ? reader->cu->header.addr_size : 0; | |
19610 | return read_str_index (reader->cu, | |
19611 | &reader->dwo_file->sections.str, | |
19612 | &reader->dwo_file->sections.str_offsets, | |
19613 | str_offsets_base, str_index); | |
19614 | } | |
19615 | ||
19616 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19617 | ||
19618 | static const char * | |
19619 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19620 | { | |
19621 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
19622 | const char *objf_name = objfile_name (objfile); | |
19623 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19624 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19625 | ||
19626 | if (!cu->str_offsets_base.has_value ()) | |
19627 | error (_("%s used in Fission stub without %s" | |
19628 | " in CU at offset 0x%lx [in module %s]"), | |
19629 | form_name, str_offsets_attr_name, | |
19630 | (long) cu->header.offset_size, objf_name); | |
19631 | ||
19632 | return read_str_index (cu, | |
19633 | &cu->per_cu->dwarf2_per_objfile->str, | |
19634 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
19635 | *cu->str_offsets_base, str_index); | |
19636 | } | |
19637 | ||
3019eac3 DE |
19638 | /* Return the length of an LEB128 number in BUF. */ |
19639 | ||
19640 | static int | |
19641 | leb128_size (const gdb_byte *buf) | |
19642 | { | |
19643 | const gdb_byte *begin = buf; | |
19644 | gdb_byte byte; | |
19645 | ||
19646 | while (1) | |
19647 | { | |
19648 | byte = *buf++; | |
19649 | if ((byte & 128) == 0) | |
19650 | return buf - begin; | |
19651 | } | |
19652 | } | |
19653 | ||
c906108c | 19654 | static void |
e142c38c | 19655 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19656 | { |
19657 | switch (lang) | |
19658 | { | |
19659 | case DW_LANG_C89: | |
76bee0cc | 19660 | case DW_LANG_C99: |
0cfd832f | 19661 | case DW_LANG_C11: |
c906108c | 19662 | case DW_LANG_C: |
d1be3247 | 19663 | case DW_LANG_UPC: |
e142c38c | 19664 | cu->language = language_c; |
c906108c | 19665 | break; |
9c37b5ae | 19666 | case DW_LANG_Java: |
c906108c | 19667 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19668 | case DW_LANG_C_plus_plus_11: |
19669 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19670 | cu->language = language_cplus; |
c906108c | 19671 | break; |
6aecb9c2 JB |
19672 | case DW_LANG_D: |
19673 | cu->language = language_d; | |
19674 | break; | |
c906108c SS |
19675 | case DW_LANG_Fortran77: |
19676 | case DW_LANG_Fortran90: | |
b21b22e0 | 19677 | case DW_LANG_Fortran95: |
f7de9aab MW |
19678 | case DW_LANG_Fortran03: |
19679 | case DW_LANG_Fortran08: | |
e142c38c | 19680 | cu->language = language_fortran; |
c906108c | 19681 | break; |
a766d390 DE |
19682 | case DW_LANG_Go: |
19683 | cu->language = language_go; | |
19684 | break; | |
c906108c | 19685 | case DW_LANG_Mips_Assembler: |
e142c38c | 19686 | cu->language = language_asm; |
c906108c SS |
19687 | break; |
19688 | case DW_LANG_Ada83: | |
8aaf0b47 | 19689 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19690 | cu->language = language_ada; |
19691 | break; | |
72019c9c GM |
19692 | case DW_LANG_Modula2: |
19693 | cu->language = language_m2; | |
19694 | break; | |
fe8e67fd PM |
19695 | case DW_LANG_Pascal83: |
19696 | cu->language = language_pascal; | |
19697 | break; | |
22566fbd DJ |
19698 | case DW_LANG_ObjC: |
19699 | cu->language = language_objc; | |
19700 | break; | |
c44af4eb TT |
19701 | case DW_LANG_Rust: |
19702 | case DW_LANG_Rust_old: | |
19703 | cu->language = language_rust; | |
19704 | break; | |
c906108c SS |
19705 | case DW_LANG_Cobol74: |
19706 | case DW_LANG_Cobol85: | |
c906108c | 19707 | default: |
e142c38c | 19708 | cu->language = language_minimal; |
c906108c SS |
19709 | break; |
19710 | } | |
e142c38c | 19711 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19712 | } |
19713 | ||
19714 | /* Return the named attribute or NULL if not there. */ | |
19715 | ||
19716 | static struct attribute * | |
e142c38c | 19717 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19718 | { |
a48e046c | 19719 | for (;;) |
c906108c | 19720 | { |
a48e046c TT |
19721 | unsigned int i; |
19722 | struct attribute *spec = NULL; | |
19723 | ||
19724 | for (i = 0; i < die->num_attrs; ++i) | |
19725 | { | |
19726 | if (die->attrs[i].name == name) | |
19727 | return &die->attrs[i]; | |
19728 | if (die->attrs[i].name == DW_AT_specification | |
19729 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19730 | spec = &die->attrs[i]; | |
19731 | } | |
19732 | ||
19733 | if (!spec) | |
19734 | break; | |
c906108c | 19735 | |
f2f0e013 | 19736 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19737 | } |
c5aa993b | 19738 | |
c906108c SS |
19739 | return NULL; |
19740 | } | |
19741 | ||
348e048f DE |
19742 | /* Return the named attribute or NULL if not there, |
19743 | but do not follow DW_AT_specification, etc. | |
19744 | This is for use in contexts where we're reading .debug_types dies. | |
19745 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19746 | back up the chain, and we want to go down. */ | |
19747 | ||
19748 | static struct attribute * | |
45e58e77 | 19749 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19750 | { |
19751 | unsigned int i; | |
19752 | ||
19753 | for (i = 0; i < die->num_attrs; ++i) | |
19754 | if (die->attrs[i].name == name) | |
19755 | return &die->attrs[i]; | |
19756 | ||
19757 | return NULL; | |
19758 | } | |
19759 | ||
7d45c7c3 KB |
19760 | /* Return the string associated with a string-typed attribute, or NULL if it |
19761 | is either not found or is of an incorrect type. */ | |
19762 | ||
19763 | static const char * | |
19764 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19765 | { | |
19766 | struct attribute *attr; | |
19767 | const char *str = NULL; | |
19768 | ||
19769 | attr = dwarf2_attr (die, name, cu); | |
19770 | ||
19771 | if (attr != NULL) | |
19772 | { | |
43988095 | 19773 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 19774 | || attr->form == DW_FORM_string |
cf532bd1 | 19775 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
19776 | || attr->form == DW_FORM_strx1 |
19777 | || attr->form == DW_FORM_strx2 | |
19778 | || attr->form == DW_FORM_strx3 | |
19779 | || attr->form == DW_FORM_strx4 | |
b3340438 | 19780 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 19781 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19782 | str = DW_STRING (attr); |
19783 | else | |
b98664d3 | 19784 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19785 | "DIE at %s in module %s"), |
19786 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19787 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19788 | } |
19789 | ||
19790 | return str; | |
19791 | } | |
19792 | ||
a084a2a6 | 19793 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19794 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19795 | static const char * |
19796 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19797 | { | |
19798 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19799 | if (dwo_name == nullptr) | |
19800 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19801 | return dwo_name; | |
19802 | } | |
19803 | ||
05cf31d1 JB |
19804 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19805 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19806 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19807 | |
19808 | static int | |
19809 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19810 | { | |
19811 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19812 | ||
19813 | return (attr && DW_UNSND (attr)); | |
19814 | } | |
19815 | ||
3ca72b44 | 19816 | static int |
e142c38c | 19817 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19818 | { |
05cf31d1 JB |
19819 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19820 | which value is non-zero. However, we have to be careful with | |
19821 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19822 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19823 | end up accidently finding a declaration attribute that belongs | |
19824 | to a different DIE referenced by the specification attribute, | |
19825 | even though the given DIE does not have a declaration attribute. */ | |
19826 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19827 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19828 | } |
19829 | ||
63d06c5c | 19830 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19831 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19832 | containing the return value on output. If there is no |
19833 | specification, but there is an abstract origin, that is | |
19834 | returned. */ | |
63d06c5c DC |
19835 | |
19836 | static struct die_info * | |
f2f0e013 | 19837 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19838 | { |
f2f0e013 DJ |
19839 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19840 | *spec_cu); | |
63d06c5c | 19841 | |
edb3359d DJ |
19842 | if (spec_attr == NULL) |
19843 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19844 | ||
63d06c5c DC |
19845 | if (spec_attr == NULL) |
19846 | return NULL; | |
19847 | else | |
f2f0e013 | 19848 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19849 | } |
c906108c | 19850 | |
527f3840 JK |
19851 | /* Stub for free_line_header to match void * callback types. */ |
19852 | ||
19853 | static void | |
19854 | free_line_header_voidp (void *arg) | |
19855 | { | |
9a3c8263 | 19856 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19857 | |
fff8551c | 19858 | delete lh; |
527f3840 JK |
19859 | } |
19860 | ||
fff8551c PA |
19861 | void |
19862 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 19863 | { |
27e0867f | 19864 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
19865 | { |
19866 | size_t new_size; | |
19867 | if (version >= 5) | |
19868 | new_size = m_include_dirs.size (); | |
19869 | else | |
19870 | new_size = m_include_dirs.size () + 1; | |
19871 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", | |
19872 | new_size, include_dir); | |
19873 | } | |
19874 | m_include_dirs.push_back (include_dir); | |
debd256d | 19875 | } |
6e70227d | 19876 | |
fff8551c PA |
19877 | void |
19878 | line_header::add_file_name (const char *name, | |
ecfb656c | 19879 | dir_index d_index, |
fff8551c PA |
19880 | unsigned int mod_time, |
19881 | unsigned int length) | |
debd256d | 19882 | { |
27e0867f | 19883 | if (dwarf_line_debug >= 2) |
7ba99d21 AT |
19884 | { |
19885 | size_t new_size; | |
19886 | if (version >= 5) | |
19887 | new_size = file_names_size (); | |
19888 | else | |
19889 | new_size = file_names_size () + 1; | |
19890 | fprintf_unfiltered (gdb_stdlog, "Adding file %zu: %s\n", | |
19891 | new_size, name); | |
19892 | } | |
19893 | m_file_names.emplace_back (name, d_index, mod_time, length); | |
debd256d | 19894 | } |
6e70227d | 19895 | |
83769d0b | 19896 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19897 | |
19898 | static struct dwarf2_section_info * | |
19899 | get_debug_line_section (struct dwarf2_cu *cu) | |
19900 | { | |
19901 | struct dwarf2_section_info *section; | |
518817b3 SM |
19902 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19903 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19904 | |
19905 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19906 | DWO file. */ | |
19907 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19908 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19909 | else if (cu->per_cu->is_dwz) | |
19910 | { | |
ed2dc618 | 19911 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19912 | |
19913 | section = &dwz->line; | |
19914 | } | |
19915 | else | |
19916 | section = &dwarf2_per_objfile->line; | |
19917 | ||
19918 | return section; | |
19919 | } | |
19920 | ||
43988095 JK |
19921 | /* Read directory or file name entry format, starting with byte of |
19922 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
19923 | entries count and the entries themselves in the described entry | |
19924 | format. */ | |
19925 | ||
19926 | static void | |
ed2dc618 SM |
19927 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19928 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
19929 | struct line_header *lh, |
19930 | const struct comp_unit_head *cu_header, | |
19931 | void (*callback) (struct line_header *lh, | |
19932 | const char *name, | |
ecfb656c | 19933 | dir_index d_index, |
43988095 JK |
19934 | unsigned int mod_time, |
19935 | unsigned int length)) | |
19936 | { | |
19937 | gdb_byte format_count, formati; | |
19938 | ULONGEST data_count, datai; | |
19939 | const gdb_byte *buf = *bufp; | |
19940 | const gdb_byte *format_header_data; | |
43988095 JK |
19941 | unsigned int bytes_read; |
19942 | ||
19943 | format_count = read_1_byte (abfd, buf); | |
19944 | buf += 1; | |
19945 | format_header_data = buf; | |
19946 | for (formati = 0; formati < format_count; formati++) | |
19947 | { | |
19948 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19949 | buf += bytes_read; | |
19950 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19951 | buf += bytes_read; | |
19952 | } | |
19953 | ||
19954 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19955 | buf += bytes_read; | |
19956 | for (datai = 0; datai < data_count; datai++) | |
19957 | { | |
19958 | const gdb_byte *format = format_header_data; | |
19959 | struct file_entry fe; | |
19960 | ||
43988095 JK |
19961 | for (formati = 0; formati < format_count; formati++) |
19962 | { | |
ecfb656c | 19963 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19964 | format += bytes_read; |
43988095 | 19965 | |
ecfb656c | 19966 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19967 | format += bytes_read; |
ecfb656c PA |
19968 | |
19969 | gdb::optional<const char *> string; | |
19970 | gdb::optional<unsigned int> uint; | |
19971 | ||
43988095 JK |
19972 | switch (form) |
19973 | { | |
19974 | case DW_FORM_string: | |
ecfb656c | 19975 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
19976 | buf += bytes_read; |
19977 | break; | |
19978 | ||
19979 | case DW_FORM_line_strp: | |
ed2dc618 SM |
19980 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
19981 | abfd, buf, | |
ecfb656c PA |
19982 | cu_header, |
19983 | &bytes_read)); | |
43988095 JK |
19984 | buf += bytes_read; |
19985 | break; | |
19986 | ||
19987 | case DW_FORM_data1: | |
ecfb656c | 19988 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
19989 | buf += 1; |
19990 | break; | |
19991 | ||
19992 | case DW_FORM_data2: | |
ecfb656c | 19993 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
19994 | buf += 2; |
19995 | break; | |
19996 | ||
19997 | case DW_FORM_data4: | |
ecfb656c | 19998 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
19999 | buf += 4; |
20000 | break; | |
20001 | ||
20002 | case DW_FORM_data8: | |
ecfb656c | 20003 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20004 | buf += 8; |
20005 | break; | |
20006 | ||
7ba99d21 AT |
20007 | case DW_FORM_data16: |
20008 | /* This is used for MD5, but file_entry does not record MD5s. */ | |
20009 | buf += 16; | |
20010 | break; | |
20011 | ||
43988095 | 20012 | case DW_FORM_udata: |
ecfb656c | 20013 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20014 | buf += bytes_read; |
20015 | break; | |
20016 | ||
20017 | case DW_FORM_block: | |
20018 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20019 | current GDB. */ | |
20020 | break; | |
20021 | } | |
ecfb656c PA |
20022 | |
20023 | switch (content_type) | |
20024 | { | |
20025 | case DW_LNCT_path: | |
20026 | if (string.has_value ()) | |
20027 | fe.name = *string; | |
20028 | break; | |
20029 | case DW_LNCT_directory_index: | |
20030 | if (uint.has_value ()) | |
20031 | fe.d_index = (dir_index) *uint; | |
20032 | break; | |
20033 | case DW_LNCT_timestamp: | |
20034 | if (uint.has_value ()) | |
20035 | fe.mod_time = *uint; | |
20036 | break; | |
20037 | case DW_LNCT_size: | |
20038 | if (uint.has_value ()) | |
20039 | fe.length = *uint; | |
20040 | break; | |
20041 | case DW_LNCT_MD5: | |
20042 | break; | |
20043 | default: | |
b98664d3 | 20044 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20045 | pulongest (content_type)); |
20046 | } | |
43988095 JK |
20047 | } |
20048 | ||
ecfb656c | 20049 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20050 | } |
20051 | ||
20052 | *bufp = buf; | |
20053 | } | |
20054 | ||
debd256d | 20055 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20056 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20057 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20058 | Returns NULL if there is a problem reading the header, e.g., if it |
20059 | has a version we don't understand. | |
debd256d JB |
20060 | |
20061 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20062 | the returned object point into the dwarf line section buffer, |
20063 | and must not be freed. */ | |
ae2de4f8 | 20064 | |
fff8551c | 20065 | static line_header_up |
9c541725 | 20066 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20067 | { |
d521ce57 | 20068 | const gdb_byte *line_ptr; |
c764a876 | 20069 | unsigned int bytes_read, offset_size; |
debd256d | 20070 | int i; |
d521ce57 | 20071 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20072 | struct dwarf2_section_info *section; |
20073 | bfd *abfd; | |
518817b3 SM |
20074 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20075 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20076 | |
36586728 | 20077 | section = get_debug_line_section (cu); |
96b79293 | 20078 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 20079 | if (section->buffer == NULL) |
debd256d | 20080 | { |
3019eac3 | 20081 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20082 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20083 | else |
b98664d3 | 20084 | complaint (_("missing .debug_line section")); |
debd256d JB |
20085 | return 0; |
20086 | } | |
20087 | ||
fceca515 DE |
20088 | /* We can't do this until we know the section is non-empty. |
20089 | Only then do we know we have such a section. */ | |
96b79293 | 20090 | abfd = section->get_bfd_owner (); |
fceca515 | 20091 | |
a738430d MK |
20092 | /* Make sure that at least there's room for the total_length field. |
20093 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20094 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20095 | { |
4d3c2250 | 20096 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20097 | return 0; |
20098 | } | |
20099 | ||
fff8551c | 20100 | line_header_up lh (new line_header ()); |
debd256d | 20101 | |
9c541725 | 20102 | lh->sect_off = sect_off; |
527f3840 JK |
20103 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20104 | ||
9c541725 | 20105 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20106 | |
a738430d | 20107 | /* Read in the header. */ |
6e70227d | 20108 | lh->total_length = |
c764a876 DE |
20109 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20110 | &bytes_read, &offset_size); | |
debd256d | 20111 | line_ptr += bytes_read; |
7ba99d21 AT |
20112 | |
20113 | const gdb_byte *start_here = line_ptr; | |
20114 | ||
3019eac3 | 20115 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20116 | { |
4d3c2250 | 20117 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20118 | return 0; |
20119 | } | |
7ba99d21 | 20120 | lh->statement_program_end = start_here + lh->total_length; |
debd256d JB |
20121 | lh->version = read_2_bytes (abfd, line_ptr); |
20122 | line_ptr += 2; | |
43988095 | 20123 | if (lh->version > 5) |
cd366ee8 DE |
20124 | { |
20125 | /* This is a version we don't understand. The format could have | |
20126 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20127 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20128 | return NULL; |
20129 | } | |
43988095 JK |
20130 | if (lh->version >= 5) |
20131 | { | |
20132 | gdb_byte segment_selector_size; | |
20133 | ||
20134 | /* Skip address size. */ | |
20135 | read_1_byte (abfd, line_ptr); | |
20136 | line_ptr += 1; | |
20137 | ||
20138 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20139 | line_ptr += 1; | |
20140 | if (segment_selector_size != 0) | |
20141 | { | |
b98664d3 | 20142 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20143 | "in .debug_line section"), |
20144 | segment_selector_size); | |
20145 | return NULL; | |
20146 | } | |
20147 | } | |
c764a876 DE |
20148 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20149 | line_ptr += offset_size; | |
7ba99d21 | 20150 | lh->statement_program_start = line_ptr + lh->header_length; |
debd256d JB |
20151 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20152 | line_ptr += 1; | |
2dc7f7b3 TT |
20153 | if (lh->version >= 4) |
20154 | { | |
20155 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20156 | line_ptr += 1; | |
20157 | } | |
20158 | else | |
20159 | lh->maximum_ops_per_instruction = 1; | |
20160 | ||
20161 | if (lh->maximum_ops_per_instruction == 0) | |
20162 | { | |
20163 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20164 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20165 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20166 | } |
20167 | ||
debd256d JB |
20168 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20169 | line_ptr += 1; | |
20170 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20171 | line_ptr += 1; | |
20172 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20173 | line_ptr += 1; | |
20174 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20175 | line_ptr += 1; | |
fff8551c | 20176 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20177 | |
20178 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20179 | for (i = 1; i < lh->opcode_base; ++i) | |
20180 | { | |
20181 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20182 | line_ptr += 1; | |
20183 | } | |
20184 | ||
43988095 | 20185 | if (lh->version >= 5) |
debd256d | 20186 | { |
43988095 | 20187 | /* Read directory table. */ |
ed2dc618 SM |
20188 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20189 | &cu->header, | |
b926417a | 20190 | [] (struct line_header *header, const char *name, |
ecfb656c | 20191 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20192 | unsigned int length) |
20193 | { | |
b926417a | 20194 | header->add_include_dir (name); |
fff8551c | 20195 | }); |
debd256d | 20196 | |
43988095 | 20197 | /* Read file name table. */ |
ed2dc618 SM |
20198 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20199 | &cu->header, | |
b926417a | 20200 | [] (struct line_header *header, const char *name, |
ecfb656c | 20201 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20202 | unsigned int length) |
20203 | { | |
b926417a | 20204 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20205 | }); |
43988095 JK |
20206 | } |
20207 | else | |
debd256d | 20208 | { |
43988095 JK |
20209 | /* Read directory table. */ |
20210 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20211 | { | |
20212 | line_ptr += bytes_read; | |
fff8551c | 20213 | lh->add_include_dir (cur_dir); |
43988095 | 20214 | } |
debd256d JB |
20215 | line_ptr += bytes_read; |
20216 | ||
43988095 JK |
20217 | /* Read file name table. */ |
20218 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20219 | { | |
ecfb656c PA |
20220 | unsigned int mod_time, length; |
20221 | dir_index d_index; | |
43988095 JK |
20222 | |
20223 | line_ptr += bytes_read; | |
ecfb656c | 20224 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20225 | line_ptr += bytes_read; |
20226 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20227 | line_ptr += bytes_read; | |
20228 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20229 | line_ptr += bytes_read; | |
20230 | ||
ecfb656c | 20231 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20232 | } |
20233 | line_ptr += bytes_read; | |
debd256d | 20234 | } |
debd256d | 20235 | |
3019eac3 | 20236 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20237 | complaint (_("line number info header doesn't " |
3e43a32a | 20238 | "fit in `.debug_line' section")); |
debd256d | 20239 | |
debd256d JB |
20240 | return lh; |
20241 | } | |
c906108c | 20242 | |
c6da4cef | 20243 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20244 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20245 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20246 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20247 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20248 | |
d521ce57 | 20249 | static const char * |
7ba99d21 | 20250 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20251 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20252 | const char *comp_dir, |
20253 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20254 | { |
d521ce57 TT |
20255 | const char *include_name = fe.name; |
20256 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20257 | const char *pst_filename; |
c6da4cef DE |
20258 | int file_is_pst; |
20259 | ||
8c43009f | 20260 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20261 | |
c89b44cd | 20262 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20263 | if (!IS_ABSOLUTE_PATH (include_name) |
20264 | && (dir_name != NULL || comp_dir != NULL)) | |
20265 | { | |
20266 | /* Avoid creating a duplicate psymtab for PST. | |
20267 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20268 | Before we do the comparison, however, we need to account | |
20269 | for DIR_NAME and COMP_DIR. | |
20270 | First prepend dir_name (if non-NULL). If we still don't | |
20271 | have an absolute path prepend comp_dir (if non-NULL). | |
20272 | However, the directory we record in the include-file's | |
20273 | psymtab does not contain COMP_DIR (to match the | |
20274 | corresponding symtab(s)). | |
20275 | ||
20276 | Example: | |
20277 | ||
20278 | bash$ cd /tmp | |
20279 | bash$ gcc -g ./hello.c | |
20280 | include_name = "hello.c" | |
20281 | dir_name = "." | |
20282 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20283 | DW_AT_name = "./hello.c" |
20284 | ||
20285 | */ | |
c6da4cef DE |
20286 | |
20287 | if (dir_name != NULL) | |
20288 | { | |
c89b44cd TT |
20289 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20290 | include_name, (char *) NULL)); | |
20291 | include_name = name_holder->get (); | |
c6da4cef | 20292 | include_name_to_compare = include_name; |
c6da4cef DE |
20293 | } |
20294 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20295 | { | |
c89b44cd TT |
20296 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20297 | include_name, (char *) NULL)); | |
20298 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20299 | } |
20300 | } | |
20301 | ||
20302 | pst_filename = pst->filename; | |
c89b44cd | 20303 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20304 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20305 | { | |
c89b44cd TT |
20306 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20307 | pst_filename, (char *) NULL)); | |
20308 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20309 | } |
20310 | ||
1e3fad37 | 20311 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20312 | |
c6da4cef DE |
20313 | if (file_is_pst) |
20314 | return NULL; | |
20315 | return include_name; | |
20316 | } | |
20317 | ||
d9b3de22 DE |
20318 | /* State machine to track the state of the line number program. */ |
20319 | ||
6f77053d | 20320 | class lnp_state_machine |
d9b3de22 | 20321 | { |
6f77053d PA |
20322 | public: |
20323 | /* Initialize a machine state for the start of a line number | |
20324 | program. */ | |
804d2729 TT |
20325 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20326 | bool record_lines_p); | |
6f77053d | 20327 | |
8c43009f PA |
20328 | file_entry *current_file () |
20329 | { | |
20330 | /* lh->file_names is 0-based, but the file name numbers in the | |
20331 | statement program are 1-based. */ | |
6f77053d PA |
20332 | return m_line_header->file_name_at (m_file); |
20333 | } | |
20334 | ||
20335 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20336 | we're processing the end of a sequence. */ | |
20337 | void record_line (bool end_sequence); | |
20338 | ||
7ab6656f OJ |
20339 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20340 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20341 | void check_line_address (struct dwarf2_cu *cu, |
20342 | const gdb_byte *line_ptr, | |
7ab6656f | 20343 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20344 | |
20345 | void handle_set_discriminator (unsigned int discriminator) | |
20346 | { | |
20347 | m_discriminator = discriminator; | |
20348 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20349 | } | |
20350 | ||
20351 | /* Handle DW_LNE_set_address. */ | |
20352 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20353 | { | |
20354 | m_op_index = 0; | |
20355 | address += baseaddr; | |
20356 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20357 | } | |
20358 | ||
20359 | /* Handle DW_LNS_advance_pc. */ | |
20360 | void handle_advance_pc (CORE_ADDR adjust); | |
20361 | ||
20362 | /* Handle a special opcode. */ | |
20363 | void handle_special_opcode (unsigned char op_code); | |
20364 | ||
20365 | /* Handle DW_LNS_advance_line. */ | |
20366 | void handle_advance_line (int line_delta) | |
20367 | { | |
20368 | advance_line (line_delta); | |
20369 | } | |
20370 | ||
20371 | /* Handle DW_LNS_set_file. */ | |
20372 | void handle_set_file (file_name_index file); | |
20373 | ||
20374 | /* Handle DW_LNS_negate_stmt. */ | |
20375 | void handle_negate_stmt () | |
20376 | { | |
20377 | m_is_stmt = !m_is_stmt; | |
20378 | } | |
20379 | ||
20380 | /* Handle DW_LNS_const_add_pc. */ | |
20381 | void handle_const_add_pc (); | |
20382 | ||
20383 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20384 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20385 | { | |
20386 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20387 | m_op_index = 0; | |
20388 | } | |
20389 | ||
20390 | /* Handle DW_LNS_copy. */ | |
20391 | void handle_copy () | |
20392 | { | |
20393 | record_line (false); | |
20394 | m_discriminator = 0; | |
20395 | } | |
20396 | ||
20397 | /* Handle DW_LNE_end_sequence. */ | |
20398 | void handle_end_sequence () | |
20399 | { | |
804d2729 | 20400 | m_currently_recording_lines = true; |
6f77053d PA |
20401 | } |
20402 | ||
20403 | private: | |
20404 | /* Advance the line by LINE_DELTA. */ | |
20405 | void advance_line (int line_delta) | |
20406 | { | |
20407 | m_line += line_delta; | |
20408 | ||
20409 | if (line_delta != 0) | |
20410 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20411 | } |
20412 | ||
804d2729 TT |
20413 | struct dwarf2_cu *m_cu; |
20414 | ||
6f77053d PA |
20415 | gdbarch *m_gdbarch; |
20416 | ||
20417 | /* True if we're recording lines. | |
20418 | Otherwise we're building partial symtabs and are just interested in | |
20419 | finding include files mentioned by the line number program. */ | |
20420 | bool m_record_lines_p; | |
20421 | ||
8c43009f | 20422 | /* The line number header. */ |
6f77053d | 20423 | line_header *m_line_header; |
8c43009f | 20424 | |
6f77053d PA |
20425 | /* These are part of the standard DWARF line number state machine, |
20426 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20427 | |
6f77053d | 20428 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20429 | /* The line table index of the current file. */ |
20430 | file_name_index m_file = 1; | |
6f77053d PA |
20431 | unsigned int m_line = 1; |
20432 | ||
20433 | /* These are initialized in the constructor. */ | |
20434 | ||
20435 | CORE_ADDR m_address; | |
20436 | bool m_is_stmt; | |
20437 | unsigned int m_discriminator; | |
d9b3de22 DE |
20438 | |
20439 | /* Additional bits of state we need to track. */ | |
20440 | ||
20441 | /* The last file that we called dwarf2_start_subfile for. | |
20442 | This is only used for TLLs. */ | |
6f77053d | 20443 | unsigned int m_last_file = 0; |
d9b3de22 | 20444 | /* The last file a line number was recorded for. */ |
6f77053d | 20445 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20446 | |
804d2729 TT |
20447 | /* When true, record the lines we decode. */ |
20448 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20449 | |
20450 | /* The last line number that was recorded, used to coalesce | |
20451 | consecutive entries for the same line. This can happen, for | |
20452 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20453 | unsigned int m_last_line = 0; |
20454 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20455 | }; |
d9b3de22 | 20456 | |
6f77053d PA |
20457 | void |
20458 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20459 | { | |
20460 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20461 | / m_line_header->maximum_ops_per_instruction) | |
20462 | * m_line_header->minimum_instruction_length); | |
20463 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20464 | m_op_index = ((m_op_index + adjust) | |
20465 | % m_line_header->maximum_ops_per_instruction); | |
20466 | } | |
d9b3de22 | 20467 | |
6f77053d PA |
20468 | void |
20469 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20470 | { |
6f77053d PA |
20471 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20472 | CORE_ADDR addr_adj = (((m_op_index | |
20473 | + (adj_opcode / m_line_header->line_range)) | |
20474 | / m_line_header->maximum_ops_per_instruction) | |
20475 | * m_line_header->minimum_instruction_length); | |
20476 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20477 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20478 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20479 | |
6f77053d PA |
20480 | int line_delta = (m_line_header->line_base |
20481 | + (adj_opcode % m_line_header->line_range)); | |
20482 | advance_line (line_delta); | |
20483 | record_line (false); | |
20484 | m_discriminator = 0; | |
20485 | } | |
d9b3de22 | 20486 | |
6f77053d PA |
20487 | void |
20488 | lnp_state_machine::handle_set_file (file_name_index file) | |
20489 | { | |
20490 | m_file = file; | |
20491 | ||
20492 | const file_entry *fe = current_file (); | |
20493 | if (fe == NULL) | |
20494 | dwarf2_debug_line_missing_file_complaint (); | |
20495 | else if (m_record_lines_p) | |
20496 | { | |
20497 | const char *dir = fe->include_dir (m_line_header); | |
20498 | ||
c24bdb02 | 20499 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20500 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20501 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20502 | } |
20503 | } | |
20504 | ||
20505 | void | |
20506 | lnp_state_machine::handle_const_add_pc () | |
20507 | { | |
20508 | CORE_ADDR adjust | |
20509 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20510 | ||
20511 | CORE_ADDR addr_adj | |
20512 | = (((m_op_index + adjust) | |
20513 | / m_line_header->maximum_ops_per_instruction) | |
20514 | * m_line_header->minimum_instruction_length); | |
20515 | ||
20516 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20517 | m_op_index = ((m_op_index + adjust) | |
20518 | % m_line_header->maximum_ops_per_instruction); | |
20519 | } | |
d9b3de22 | 20520 | |
a05a36a5 DE |
20521 | /* Return non-zero if we should add LINE to the line number table. |
20522 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20523 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20524 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20525 | had a non-zero discriminator. | |
20526 | ||
20527 | We have to be careful in the presence of discriminators. | |
20528 | E.g., for this line: | |
20529 | ||
20530 | for (i = 0; i < 100000; i++); | |
20531 | ||
20532 | clang can emit four line number entries for that one line, | |
20533 | each with a different discriminator. | |
20534 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20535 | ||
20536 | However, we want gdb to coalesce all four entries into one. | |
20537 | Otherwise the user could stepi into the middle of the line and | |
20538 | gdb would get confused about whether the pc really was in the | |
20539 | middle of the line. | |
20540 | ||
20541 | Things are further complicated by the fact that two consecutive | |
20542 | line number entries for the same line is a heuristic used by gcc | |
20543 | to denote the end of the prologue. So we can't just discard duplicate | |
20544 | entries, we have to be selective about it. The heuristic we use is | |
20545 | that we only collapse consecutive entries for the same line if at least | |
20546 | one of those entries has a non-zero discriminator. PR 17276. | |
20547 | ||
20548 | Note: Addresses in the line number state machine can never go backwards | |
20549 | within one sequence, thus this coalescing is ok. */ | |
20550 | ||
20551 | static int | |
804d2729 TT |
20552 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20553 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20554 | int line_has_non_zero_discriminator, |
20555 | struct subfile *last_subfile) | |
20556 | { | |
c24bdb02 | 20557 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20558 | return 1; |
20559 | if (line != last_line) | |
20560 | return 1; | |
20561 | /* Same line for the same file that we've seen already. | |
20562 | As a last check, for pr 17276, only record the line if the line | |
20563 | has never had a non-zero discriminator. */ | |
20564 | if (!line_has_non_zero_discriminator) | |
20565 | return 1; | |
20566 | return 0; | |
20567 | } | |
20568 | ||
804d2729 TT |
20569 | /* Use the CU's builder to record line number LINE beginning at |
20570 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20571 | |
20572 | static void | |
d9b3de22 DE |
20573 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20574 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20575 | struct dwarf2_cu *cu) |
252a6764 DE |
20576 | { |
20577 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20578 | ||
27e0867f DE |
20579 | if (dwarf_line_debug) |
20580 | { | |
20581 | fprintf_unfiltered (gdb_stdlog, | |
20582 | "Recording line %u, file %s, address %s\n", | |
20583 | line, lbasename (subfile->name), | |
20584 | paddress (gdbarch, address)); | |
20585 | } | |
20586 | ||
804d2729 | 20587 | if (cu != nullptr) |
c24bdb02 | 20588 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
20589 | } |
20590 | ||
20591 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20592 | Mark the end of a set of line number records. | |
d9b3de22 | 20593 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20594 | If SUBFILE is NULL the request is ignored. */ |
20595 | ||
20596 | static void | |
20597 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20598 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20599 | { |
27e0867f DE |
20600 | if (subfile == NULL) |
20601 | return; | |
20602 | ||
20603 | if (dwarf_line_debug) | |
20604 | { | |
20605 | fprintf_unfiltered (gdb_stdlog, | |
20606 | "Finishing current line, file %s, address %s\n", | |
20607 | lbasename (subfile->name), | |
20608 | paddress (gdbarch, address)); | |
20609 | } | |
20610 | ||
804d2729 | 20611 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20612 | } |
20613 | ||
6f77053d PA |
20614 | void |
20615 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20616 | { |
d9b3de22 DE |
20617 | if (dwarf_line_debug) |
20618 | { | |
20619 | fprintf_unfiltered (gdb_stdlog, | |
20620 | "Processing actual line %u: file %u," | |
94a72be7 | 20621 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20622 | m_line, m_file, |
6f77053d | 20623 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20624 | m_is_stmt, m_discriminator, |
20625 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20626 | } |
20627 | ||
6f77053d | 20628 | file_entry *fe = current_file (); |
8c43009f PA |
20629 | |
20630 | if (fe == NULL) | |
d9b3de22 DE |
20631 | dwarf2_debug_line_missing_file_complaint (); |
20632 | /* For now we ignore lines not starting on an instruction boundary. | |
20633 | But not when processing end_sequence for compatibility with the | |
20634 | previous version of the code. */ | |
6f77053d | 20635 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20636 | { |
8c43009f | 20637 | fe->included_p = 1; |
94a72be7 AB |
20638 | if (m_record_lines_p |
20639 | && (producer_is_codewarrior (m_cu) || m_is_stmt || end_sequence)) | |
d9b3de22 | 20640 | { |
c24bdb02 | 20641 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20642 | || end_sequence) |
d9b3de22 | 20643 | { |
804d2729 TT |
20644 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20645 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20646 | } |
20647 | ||
20648 | if (!end_sequence) | |
20649 | { | |
804d2729 | 20650 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20651 | m_line_has_non_zero_discriminator, |
20652 | m_last_subfile)) | |
d9b3de22 | 20653 | { |
c24bdb02 | 20654 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20655 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20656 | builder->get_current_subfile (), |
6f77053d | 20657 | m_line, m_address, |
804d2729 | 20658 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20659 | } |
c24bdb02 | 20660 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20661 | m_last_line = m_line; |
d9b3de22 DE |
20662 | } |
20663 | } | |
20664 | } | |
20665 | } | |
20666 | ||
804d2729 TT |
20667 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20668 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20669 | { |
804d2729 | 20670 | m_cu = cu; |
6f77053d PA |
20671 | m_gdbarch = arch; |
20672 | m_record_lines_p = record_lines_p; | |
20673 | m_line_header = lh; | |
d9b3de22 | 20674 | |
804d2729 | 20675 | m_currently_recording_lines = true; |
d9b3de22 | 20676 | |
d9b3de22 DE |
20677 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20678 | was a line entry for it so that the backend has a chance to adjust it | |
20679 | and also record it in case it needs it. This is currently used by MIPS | |
20680 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20681 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20682 | m_is_stmt = lh->default_is_stmt; | |
20683 | m_discriminator = 0; | |
252a6764 DE |
20684 | } |
20685 | ||
6f77053d PA |
20686 | void |
20687 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20688 | const gdb_byte *line_ptr, | |
7ab6656f | 20689 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20690 | { |
7ab6656f OJ |
20691 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20692 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20693 | values of zero to preserve GDB's previous behaviour which is to handle | |
20694 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20695 | |
7ab6656f | 20696 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20697 | { |
20698 | /* This line table is for a function which has been | |
20699 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20700 | ||
518817b3 | 20701 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20702 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20703 | ||
b98664d3 | 20704 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20705 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20706 | m_currently_recording_lines = false; |
20707 | /* Note: m_currently_recording_lines is left as false until we see | |
20708 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20709 | } |
20710 | } | |
20711 | ||
f3f5162e | 20712 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20713 | Process the line number information in LH. |
20714 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20715 | program in order to set included_p for every referenced header. */ | |
debd256d | 20716 | |
c906108c | 20717 | static void |
43f3e411 DE |
20718 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20719 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20720 | { |
d521ce57 TT |
20721 | const gdb_byte *line_ptr, *extended_end; |
20722 | const gdb_byte *line_end; | |
a8c50c1f | 20723 | unsigned int bytes_read, extended_len; |
699ca60a | 20724 | unsigned char op_code, extended_op; |
e142c38c | 20725 | CORE_ADDR baseaddr; |
518817b3 | 20726 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20727 | bfd *abfd = objfile->obfd; |
fbf65064 | 20728 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20729 | /* True if we're recording line info (as opposed to building partial |
20730 | symtabs and just interested in finding include files mentioned by | |
20731 | the line number program). */ | |
20732 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20733 | |
b3b3bada | 20734 | baseaddr = objfile->text_section_offset (); |
c906108c | 20735 | |
debd256d JB |
20736 | line_ptr = lh->statement_program_start; |
20737 | line_end = lh->statement_program_end; | |
c906108c SS |
20738 | |
20739 | /* Read the statement sequences until there's nothing left. */ | |
20740 | while (line_ptr < line_end) | |
20741 | { | |
6f77053d PA |
20742 | /* The DWARF line number program state machine. Reset the state |
20743 | machine at the start of each sequence. */ | |
804d2729 | 20744 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20745 | bool end_sequence = false; |
d9b3de22 | 20746 | |
8c43009f | 20747 | if (record_lines_p) |
c906108c | 20748 | { |
8c43009f PA |
20749 | /* Start a subfile for the current file of the state |
20750 | machine. */ | |
20751 | const file_entry *fe = state_machine.current_file (); | |
20752 | ||
20753 | if (fe != NULL) | |
804d2729 | 20754 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20755 | } |
20756 | ||
a738430d | 20757 | /* Decode the table. */ |
d9b3de22 | 20758 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20759 | { |
20760 | op_code = read_1_byte (abfd, line_ptr); | |
20761 | line_ptr += 1; | |
9aa1fe7e | 20762 | |
debd256d | 20763 | if (op_code >= lh->opcode_base) |
6e70227d | 20764 | { |
8e07a239 | 20765 | /* Special opcode. */ |
6f77053d | 20766 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20767 | } |
20768 | else switch (op_code) | |
c906108c SS |
20769 | { |
20770 | case DW_LNS_extended_op: | |
3e43a32a MS |
20771 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20772 | &bytes_read); | |
473b7be6 | 20773 | line_ptr += bytes_read; |
a8c50c1f | 20774 | extended_end = line_ptr + extended_len; |
c906108c SS |
20775 | extended_op = read_1_byte (abfd, line_ptr); |
20776 | line_ptr += 1; | |
20777 | switch (extended_op) | |
20778 | { | |
20779 | case DW_LNE_end_sequence: | |
6f77053d PA |
20780 | state_machine.handle_end_sequence (); |
20781 | end_sequence = true; | |
c906108c SS |
20782 | break; |
20783 | case DW_LNE_set_address: | |
d9b3de22 DE |
20784 | { |
20785 | CORE_ADDR address | |
20786 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20787 | line_ptr += bytes_read; |
6f77053d PA |
20788 | |
20789 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20790 | lowpc - baseaddr, address); |
6f77053d | 20791 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20792 | } |
c906108c SS |
20793 | break; |
20794 | case DW_LNE_define_file: | |
debd256d | 20795 | { |
d521ce57 | 20796 | const char *cur_file; |
ecfb656c PA |
20797 | unsigned int mod_time, length; |
20798 | dir_index dindex; | |
6e70227d | 20799 | |
3e43a32a MS |
20800 | cur_file = read_direct_string (abfd, line_ptr, |
20801 | &bytes_read); | |
debd256d | 20802 | line_ptr += bytes_read; |
ecfb656c | 20803 | dindex = (dir_index) |
debd256d JB |
20804 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20805 | line_ptr += bytes_read; | |
20806 | mod_time = | |
20807 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20808 | line_ptr += bytes_read; | |
20809 | length = | |
20810 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20811 | line_ptr += bytes_read; | |
ecfb656c | 20812 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20813 | } |
c906108c | 20814 | break; |
d0c6ba3d | 20815 | case DW_LNE_set_discriminator: |
6f77053d PA |
20816 | { |
20817 | /* The discriminator is not interesting to the | |
20818 | debugger; just ignore it. We still need to | |
20819 | check its value though: | |
20820 | if there are consecutive entries for the same | |
20821 | (non-prologue) line we want to coalesce them. | |
20822 | PR 17276. */ | |
20823 | unsigned int discr | |
20824 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20825 | line_ptr += bytes_read; | |
20826 | ||
20827 | state_machine.handle_set_discriminator (discr); | |
20828 | } | |
d0c6ba3d | 20829 | break; |
c906108c | 20830 | default: |
b98664d3 | 20831 | complaint (_("mangled .debug_line section")); |
debd256d | 20832 | return; |
c906108c | 20833 | } |
a8c50c1f DJ |
20834 | /* Make sure that we parsed the extended op correctly. If e.g. |
20835 | we expected a different address size than the producer used, | |
20836 | we may have read the wrong number of bytes. */ | |
20837 | if (line_ptr != extended_end) | |
20838 | { | |
b98664d3 | 20839 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20840 | return; |
20841 | } | |
c906108c SS |
20842 | break; |
20843 | case DW_LNS_copy: | |
6f77053d | 20844 | state_machine.handle_copy (); |
c906108c SS |
20845 | break; |
20846 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20847 | { |
20848 | CORE_ADDR adjust | |
20849 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20850 | line_ptr += bytes_read; |
6f77053d PA |
20851 | |
20852 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20853 | } |
c906108c SS |
20854 | break; |
20855 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20856 | { |
20857 | int line_delta | |
20858 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20859 | line_ptr += bytes_read; |
6f77053d PA |
20860 | |
20861 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20862 | } |
c906108c SS |
20863 | break; |
20864 | case DW_LNS_set_file: | |
d9b3de22 | 20865 | { |
6f77053d | 20866 | file_name_index file |
ecfb656c PA |
20867 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20868 | &bytes_read); | |
d9b3de22 | 20869 | line_ptr += bytes_read; |
8c43009f | 20870 | |
6f77053d | 20871 | state_machine.handle_set_file (file); |
d9b3de22 | 20872 | } |
c906108c SS |
20873 | break; |
20874 | case DW_LNS_set_column: | |
0ad93d4f | 20875 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20876 | line_ptr += bytes_read; |
20877 | break; | |
20878 | case DW_LNS_negate_stmt: | |
6f77053d | 20879 | state_machine.handle_negate_stmt (); |
c906108c SS |
20880 | break; |
20881 | case DW_LNS_set_basic_block: | |
c906108c | 20882 | break; |
c2c6d25f JM |
20883 | /* Add to the address register of the state machine the |
20884 | address increment value corresponding to special opcode | |
a738430d MK |
20885 | 255. I.e., this value is scaled by the minimum |
20886 | instruction length since special opcode 255 would have | |
b021a221 | 20887 | scaled the increment. */ |
c906108c | 20888 | case DW_LNS_const_add_pc: |
6f77053d | 20889 | state_machine.handle_const_add_pc (); |
c906108c SS |
20890 | break; |
20891 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20892 | { |
6f77053d | 20893 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20894 | line_ptr += 2; |
6f77053d PA |
20895 | |
20896 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20897 | } |
c906108c | 20898 | break; |
9aa1fe7e | 20899 | default: |
a738430d MK |
20900 | { |
20901 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20902 | int i; |
a738430d | 20903 | |
debd256d | 20904 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20905 | { |
20906 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20907 | line_ptr += bytes_read; | |
20908 | } | |
20909 | } | |
c906108c SS |
20910 | } |
20911 | } | |
d9b3de22 DE |
20912 | |
20913 | if (!end_sequence) | |
20914 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20915 | ||
20916 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20917 | in which case we still finish recording the last line). */ | |
6f77053d | 20918 | state_machine.record_line (true); |
c906108c | 20919 | } |
f3f5162e DE |
20920 | } |
20921 | ||
20922 | /* Decode the Line Number Program (LNP) for the given line_header | |
20923 | structure and CU. The actual information extracted and the type | |
20924 | of structures created from the LNP depends on the value of PST. | |
20925 | ||
20926 | 1. If PST is NULL, then this procedure uses the data from the program | |
20927 | to create all necessary symbol tables, and their linetables. | |
20928 | ||
20929 | 2. If PST is not NULL, this procedure reads the program to determine | |
20930 | the list of files included by the unit represented by PST, and | |
20931 | builds all the associated partial symbol tables. | |
20932 | ||
20933 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20934 | It is used for relative paths in the line table. | |
20935 | NOTE: When processing partial symtabs (pst != NULL), | |
20936 | comp_dir == pst->dirname. | |
20937 | ||
20938 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20939 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20940 | symtab we don't use it in the name of the psymtabs we create. | |
20941 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20942 | A good testcase for this is mb-inline.exp. |
20943 | ||
527f3840 JK |
20944 | LOWPC is the lowest address in CU (or 0 if not known). |
20945 | ||
20946 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20947 | for its PC<->lines mapping information. Otherwise only the filename | |
20948 | table is read in. */ | |
f3f5162e DE |
20949 | |
20950 | static void | |
20951 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20952 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20953 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20954 | { |
518817b3 | 20955 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20956 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20957 | |
527f3840 JK |
20958 | if (decode_mapping) |
20959 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20960 | |
20961 | if (decode_for_pst_p) | |
20962 | { | |
aaa75496 JB |
20963 | /* Now that we're done scanning the Line Header Program, we can |
20964 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20965 | for (auto &file_entry : lh->file_names ()) |
20966 | if (file_entry.included_p == 1) | |
aaa75496 | 20967 | { |
c89b44cd | 20968 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20969 | const char *include_name = |
7ba99d21 AT |
20970 | psymtab_include_file_name (lh, file_entry, pst, |
20971 | comp_dir, &name_holder); | |
c6da4cef | 20972 | if (include_name != NULL) |
aaa75496 JB |
20973 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20974 | } | |
20975 | } | |
cb1df416 DJ |
20976 | else |
20977 | { | |
20978 | /* Make sure a symtab is created for every file, even files | |
20979 | which contain only variables (i.e. no code with associated | |
20980 | line numbers). */ | |
c24bdb02 KS |
20981 | buildsym_compunit *builder = cu->get_builder (); |
20982 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20983 | |
7ba99d21 | 20984 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20985 | { |
804d2729 | 20986 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20987 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20988 | { |
c24bdb02 | 20989 | builder->get_current_subfile ()->symtab |
804d2729 | 20990 | = allocate_symtab (cust, |
c24bdb02 | 20991 | builder->get_current_subfile ()->name); |
43f3e411 | 20992 | } |
c24bdb02 | 20993 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20994 | } |
20995 | } | |
c906108c SS |
20996 | } |
20997 | ||
20998 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20999 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21000 | or NULL if not known. |
c906108c SS |
21001 | This routine tries to keep line numbers from identical absolute and |
21002 | relative file names in a common subfile. | |
21003 | ||
21004 | Using the `list' example from the GDB testsuite, which resides in | |
21005 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21006 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21007 | ||
c5aa993b | 21008 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21009 | DW_AT_comp_dir: /compdir |
357e46e7 | 21010 | files.files[0].name: list0.h |
c5aa993b | 21011 | files.files[0].dir: /srcdir |
357e46e7 | 21012 | files.files[1].name: list0.c |
c5aa993b | 21013 | files.files[1].dir: /srcdir |
c906108c SS |
21014 | |
21015 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21016 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21017 | start_subfile will ensure that this happens provided that we pass the | |
21018 | concatenation of files.files[1].dir and files.files[1].name as the | |
21019 | subfile's name. */ | |
c906108c SS |
21020 | |
21021 | static void | |
804d2729 TT |
21022 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21023 | const char *dirname) | |
c906108c | 21024 | { |
43816ebc | 21025 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21026 | |
4d663531 | 21027 | /* In order not to lose the line information directory, |
4f1520fb FR |
21028 | we concatenate it to the filename when it makes sense. |
21029 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21030 | information): ``The directory index is ignored for file names | |
21031 | that represent full path names''. Thus ignoring dirname in the | |
21032 | `else' branch below isn't an issue. */ | |
c906108c | 21033 | |
d5166ae1 | 21034 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21035 | { |
43816ebc TT |
21036 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21037 | filename = copy.get (); | |
d521ce57 | 21038 | } |
c906108c | 21039 | |
c24bdb02 | 21040 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21041 | } |
21042 | ||
804d2729 TT |
21043 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21044 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21045 | |
c24bdb02 KS |
21046 | struct compunit_symtab * |
21047 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21048 | CORE_ADDR low_pc) | |
f4dc4d17 | 21049 | { |
c24bdb02 | 21050 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21051 | |
c24bdb02 KS |
21052 | m_builder.reset (new struct buildsym_compunit |
21053 | (per_cu->dwarf2_per_objfile->objfile, | |
21054 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 21055 | |
c24bdb02 | 21056 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21057 | |
c24bdb02 KS |
21058 | get_builder ()->record_debugformat ("DWARF 2"); |
21059 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21060 | |
c24bdb02 | 21061 | processing_has_namespace_info = false; |
43f3e411 | 21062 | |
c24bdb02 | 21063 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21064 | } |
21065 | ||
4c2df51b DJ |
21066 | static void |
21067 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21068 | struct dwarf2_cu *cu) |
4c2df51b | 21069 | { |
518817b3 | 21070 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21071 | struct comp_unit_head *cu_header = &cu->header; |
21072 | ||
4c2df51b DJ |
21073 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21074 | code here to turn a symbol with DW_AT_external and a | |
21075 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21076 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21077 | with some versions of binutils) where shared libraries could have | |
21078 | relocations against symbols in their debug information - the | |
21079 | minimal symbol would have the right address, but the debug info | |
21080 | would not. It's no longer necessary, because we will explicitly | |
21081 | apply relocations when we read in the debug information now. */ | |
21082 | ||
21083 | /* A DW_AT_location attribute with no contents indicates that a | |
21084 | variable has been optimized away. */ | |
4fc6c0d5 | 21085 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 21086 | { |
f1e6e072 | 21087 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21088 | return; |
21089 | } | |
21090 | ||
21091 | /* Handle one degenerate form of location expression specially, to | |
21092 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21093 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21094 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21095 | |
4fc6c0d5 | 21096 | if (attr->form_is_block () |
3019eac3 DE |
21097 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21098 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21099 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21100 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21101 | && (DW_BLOCK (attr)->size |
21102 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21103 | { |
891d2f0b | 21104 | unsigned int dummy; |
4c2df51b | 21105 | |
3019eac3 | 21106 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
38583298 TT |
21107 | SET_SYMBOL_VALUE_ADDRESS (sym, |
21108 | read_address (objfile->obfd, | |
21109 | DW_BLOCK (attr)->data + 1, | |
21110 | cu, &dummy)); | |
3019eac3 | 21111 | else |
38583298 TT |
21112 | SET_SYMBOL_VALUE_ADDRESS |
21113 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
21114 | &dummy)); | |
f1e6e072 | 21115 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 21116 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
21117 | SET_SYMBOL_VALUE_ADDRESS |
21118 | (sym, | |
21119 | SYMBOL_VALUE_ADDRESS (sym) | |
21120 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
21121 | return; |
21122 | } | |
21123 | ||
21124 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21125 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21126 | (i.e. when the value of a register or memory location is | |
21127 | referenced, or a thread-local block, etc.). Then again, it might | |
21128 | not be worthwhile. I'm assuming that it isn't unless performance | |
21129 | or memory numbers show me otherwise. */ | |
21130 | ||
f1e6e072 | 21131 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21132 | |
f1e6e072 | 21133 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21134 | cu->has_loclist = true; |
4c2df51b DJ |
21135 | } |
21136 | ||
c906108c SS |
21137 | /* Given a pointer to a DWARF information entry, figure out if we need |
21138 | to make a symbol table entry for it, and if so, create a new entry | |
21139 | and return a pointer to it. | |
21140 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21141 | used the passed type. |
21142 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21143 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21144 | |
21145 | static struct symbol * | |
5e2db402 TT |
21146 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21147 | struct symbol *space) | |
c906108c | 21148 | { |
518817b3 SM |
21149 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21150 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21151 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21152 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21153 | struct symbol *sym = NULL; |
15d034d0 | 21154 | const char *name; |
c906108c SS |
21155 | struct attribute *attr = NULL; |
21156 | struct attribute *attr2 = NULL; | |
e142c38c | 21157 | CORE_ADDR baseaddr; |
e37fd15a SW |
21158 | struct pending **list_to_add = NULL; |
21159 | ||
edb3359d | 21160 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21161 | |
b3b3bada | 21162 | baseaddr = objfile->text_section_offset (); |
c906108c | 21163 | |
94af9270 | 21164 | name = dwarf2_name (die, cu); |
c906108c SS |
21165 | if (name) |
21166 | { | |
94af9270 | 21167 | const char *linkagename; |
34eaf542 | 21168 | int suppress_add = 0; |
94af9270 | 21169 | |
34eaf542 TT |
21170 | if (space) |
21171 | sym = space; | |
21172 | else | |
e623cf5d | 21173 | sym = allocate_symbol (objfile); |
c906108c | 21174 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21175 | |
21176 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21177 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 21178 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 21179 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 21180 | |
f55ee35c JK |
21181 | /* Fortran does not have mangling standard and the mangling does differ |
21182 | between gfortran, iFort etc. */ | |
21183 | if (cu->language == language_fortran | |
468c0cbb CB |
21184 | && symbol_get_demangled_name (sym) == NULL) |
21185 | symbol_set_demangled_name (sym, | |
cfc594ee | 21186 | dwarf2_full_name (name, die, cu), |
29df156d | 21187 | NULL); |
f55ee35c | 21188 | |
c906108c | 21189 | /* Default assumptions. |
c5aa993b | 21190 | Use the passed type or decode it from the die. */ |
176620f1 | 21191 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21192 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21193 | if (type != NULL) |
21194 | SYMBOL_TYPE (sym) = type; | |
21195 | else | |
e7c27a73 | 21196 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21197 | attr = dwarf2_attr (die, |
21198 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21199 | cu); | |
435d3d88 | 21200 | if (attr != nullptr) |
c906108c SS |
21201 | { |
21202 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21203 | } | |
cb1df416 | 21204 | |
edb3359d DJ |
21205 | attr = dwarf2_attr (die, |
21206 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21207 | cu); | |
435d3d88 | 21208 | if (attr != nullptr) |
cb1df416 | 21209 | { |
ecfb656c | 21210 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21211 | struct file_entry *fe; |
9a619af0 | 21212 | |
ecfb656c PA |
21213 | if (cu->line_header != NULL) |
21214 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21215 | else |
21216 | fe = NULL; | |
21217 | ||
21218 | if (fe == NULL) | |
b98664d3 | 21219 | complaint (_("file index out of range")); |
8c43009f PA |
21220 | else |
21221 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21222 | } |
21223 | ||
c906108c SS |
21224 | switch (die->tag) |
21225 | { | |
21226 | case DW_TAG_label: | |
e142c38c | 21227 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21228 | if (attr != nullptr) |
3e29f34a MR |
21229 | { |
21230 | CORE_ADDR addr; | |
21231 | ||
cd6c91b4 | 21232 | addr = attr->value_as_address (); |
3e29f34a | 21233 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21234 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 21235 | } |
0f5238ed TT |
21236 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21237 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21238 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21239 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21240 | break; |
21241 | case DW_TAG_subprogram: | |
21242 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21243 | finish_block. */ | |
f1e6e072 | 21244 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21245 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 21246 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
21247 | || cu->language == language_ada |
21248 | || cu->language == language_fortran) | |
c906108c | 21249 | { |
2cfa0c8d | 21250 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
21251 | Ada and Fortran subprograms, whether marked external or |
21252 | not, are always stored as a global symbol, because we want | |
21253 | to be able to access them globally. For instance, we want | |
21254 | to be able to break on a nested subprogram without having | |
21255 | to specify the context. */ | |
c24bdb02 | 21256 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21257 | } |
21258 | else | |
21259 | { | |
e37fd15a | 21260 | list_to_add = cu->list_in_scope; |
c906108c SS |
21261 | } |
21262 | break; | |
edb3359d DJ |
21263 | case DW_TAG_inlined_subroutine: |
21264 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21265 | finish_block. */ | |
f1e6e072 | 21266 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21267 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21268 | list_to_add = cu->list_in_scope; |
edb3359d | 21269 | break; |
34eaf542 TT |
21270 | case DW_TAG_template_value_param: |
21271 | suppress_add = 1; | |
21272 | /* Fall through. */ | |
72929c62 | 21273 | case DW_TAG_constant: |
c906108c | 21274 | case DW_TAG_variable: |
254e6b9e | 21275 | case DW_TAG_member: |
0963b4bd MS |
21276 | /* Compilation with minimal debug info may result in |
21277 | variables with missing type entries. Change the | |
21278 | misleading `void' type to something sensible. */ | |
c906108c | 21279 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21280 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21281 | |
e142c38c | 21282 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21283 | /* In the case of DW_TAG_member, we should only be called for |
21284 | static const members. */ | |
21285 | if (die->tag == DW_TAG_member) | |
21286 | { | |
3863f96c DE |
21287 | /* dwarf2_add_field uses die_is_declaration, |
21288 | so we do the same. */ | |
254e6b9e DE |
21289 | gdb_assert (die_is_declaration (die, cu)); |
21290 | gdb_assert (attr); | |
21291 | } | |
435d3d88 | 21292 | if (attr != nullptr) |
c906108c | 21293 | { |
e7c27a73 | 21294 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21295 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21296 | if (!suppress_add) |
34eaf542 TT |
21297 | { |
21298 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21299 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21300 | else |
e37fd15a | 21301 | list_to_add = cu->list_in_scope; |
34eaf542 | 21302 | } |
c906108c SS |
21303 | break; |
21304 | } | |
e142c38c | 21305 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21306 | if (attr != nullptr) |
c906108c | 21307 | { |
e7c27a73 | 21308 | var_decode_location (attr, sym, cu); |
e142c38c | 21309 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21310 | |
21311 | /* Fortran explicitly imports any global symbols to the local | |
21312 | scope by DW_TAG_common_block. */ | |
21313 | if (cu->language == language_fortran && die->parent | |
21314 | && die->parent->tag == DW_TAG_common_block) | |
21315 | attr2 = NULL; | |
21316 | ||
caac4577 JG |
21317 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21318 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21319 | && !dwarf2_per_objfile->has_section_at_zero) | |
21320 | { | |
21321 | /* When a static variable is eliminated by the linker, | |
21322 | the corresponding debug information is not stripped | |
21323 | out, but the variable address is set to null; | |
21324 | do not add such variables into symbol table. */ | |
21325 | } | |
21326 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21327 | { |
4b610737 TT |
21328 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21329 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
21330 | && dwarf2_per_objfile->can_copy) | |
21331 | { | |
21332 | /* A global static variable might be subject to | |
21333 | copy relocation. We first check for a local | |
21334 | minsym, though, because maybe the symbol was | |
21335 | marked hidden, in which case this would not | |
21336 | apply. */ | |
21337 | bound_minimal_symbol found | |
21338 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21339 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21340 | if (found.minsym != nullptr) |
21341 | sym->maybe_copied = 1; | |
21342 | } | |
f55ee35c | 21343 | |
1c809c68 TT |
21344 | /* A variable with DW_AT_external is never static, |
21345 | but it may be block-scoped. */ | |
804d2729 | 21346 | list_to_add |
c24bdb02 KS |
21347 | = ((cu->list_in_scope |
21348 | == cu->get_builder ()->get_file_symbols ()) | |
21349 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21350 | : cu->list_in_scope); |
1c809c68 | 21351 | } |
c906108c | 21352 | else |
e37fd15a | 21353 | list_to_add = cu->list_in_scope; |
c906108c SS |
21354 | } |
21355 | else | |
21356 | { | |
21357 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21358 | If it is an external symbol and we have type information |
21359 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21360 | The address of the variable will then be determined from | |
21361 | the minimal symbol table whenever the variable is | |
21362 | referenced. */ | |
e142c38c | 21363 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21364 | |
21365 | /* Fortran explicitly imports any global symbols to the local | |
21366 | scope by DW_TAG_common_block. */ | |
21367 | if (cu->language == language_fortran && die->parent | |
21368 | && die->parent->tag == DW_TAG_common_block) | |
21369 | { | |
21370 | /* SYMBOL_CLASS doesn't matter here because | |
21371 | read_common_block is going to reset it. */ | |
21372 | if (!suppress_add) | |
21373 | list_to_add = cu->list_in_scope; | |
21374 | } | |
21375 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21376 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21377 | { |
0fe7935b DJ |
21378 | /* A variable with DW_AT_external is never static, but it |
21379 | may be block-scoped. */ | |
804d2729 | 21380 | list_to_add |
c24bdb02 KS |
21381 | = ((cu->list_in_scope |
21382 | == cu->get_builder ()->get_file_symbols ()) | |
21383 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21384 | : cu->list_in_scope); |
0fe7935b | 21385 | |
f1e6e072 | 21386 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21387 | } |
442ddf59 JK |
21388 | else if (!die_is_declaration (die, cu)) |
21389 | { | |
21390 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21391 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21392 | if (!suppress_add) |
21393 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21394 | } |
c906108c SS |
21395 | } |
21396 | break; | |
21397 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21398 | { |
21399 | /* If we are inside a function, mark this as an argument. If | |
21400 | not, we might be looking at an argument to an inlined function | |
21401 | when we do not have enough information to show inlined frames; | |
21402 | pretend it's a local variable in that case so that the user can | |
21403 | still see it. */ | |
804d2729 | 21404 | struct context_stack *curr |
c24bdb02 | 21405 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21406 | if (curr != nullptr && curr->name != nullptr) |
21407 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21408 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21409 | if (attr != nullptr) |
a60f3166 TT |
21410 | { |
21411 | var_decode_location (attr, sym, cu); | |
21412 | } | |
21413 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21414 | if (attr != nullptr) |
a60f3166 TT |
21415 | { |
21416 | dwarf2_const_value (attr, sym, cu); | |
21417 | } | |
f346a30d | 21418 | |
a60f3166 TT |
21419 | list_to_add = cu->list_in_scope; |
21420 | } | |
c906108c SS |
21421 | break; |
21422 | case DW_TAG_unspecified_parameters: | |
21423 | /* From varargs functions; gdb doesn't seem to have any | |
21424 | interest in this information, so just ignore it for now. | |
21425 | (FIXME?) */ | |
21426 | break; | |
34eaf542 TT |
21427 | case DW_TAG_template_type_param: |
21428 | suppress_add = 1; | |
21429 | /* Fall through. */ | |
c906108c | 21430 | case DW_TAG_class_type: |
680b30c7 | 21431 | case DW_TAG_interface_type: |
c906108c SS |
21432 | case DW_TAG_structure_type: |
21433 | case DW_TAG_union_type: | |
72019c9c | 21434 | case DW_TAG_set_type: |
c906108c | 21435 | case DW_TAG_enumeration_type: |
f1e6e072 | 21436 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21437 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21438 | |
63d06c5c | 21439 | { |
9c37b5ae | 21440 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21441 | really ever be static objects: otherwise, if you try |
21442 | to, say, break of a class's method and you're in a file | |
21443 | which doesn't mention that class, it won't work unless | |
21444 | the check for all static symbols in lookup_symbol_aux | |
21445 | saves you. See the OtherFileClass tests in | |
21446 | gdb.c++/namespace.exp. */ | |
21447 | ||
e37fd15a | 21448 | if (!suppress_add) |
34eaf542 | 21449 | { |
c24bdb02 | 21450 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21451 | list_to_add |
c24bdb02 | 21452 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21453 | && cu->language == language_cplus |
c24bdb02 | 21454 | ? builder->get_global_symbols () |
804d2729 | 21455 | : cu->list_in_scope); |
63d06c5c | 21456 | |
64382290 | 21457 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21458 | ... }" also defines a typedef for "foo". */ |
64382290 | 21459 | if (cu->language == language_cplus |
45280282 | 21460 | || cu->language == language_ada |
c44af4eb TT |
21461 | || cu->language == language_d |
21462 | || cu->language == language_rust) | |
64382290 TT |
21463 | { |
21464 | /* The symbol's name is already allocated along | |
21465 | with this objfile, so we don't need to | |
21466 | duplicate it for the type. */ | |
21467 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 21468 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 21469 | } |
63d06c5c DC |
21470 | } |
21471 | } | |
c906108c SS |
21472 | break; |
21473 | case DW_TAG_typedef: | |
f1e6e072 | 21474 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21475 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21476 | list_to_add = cu->list_in_scope; |
63d06c5c | 21477 | break; |
c906108c | 21478 | case DW_TAG_base_type: |
a02abb62 | 21479 | case DW_TAG_subrange_type: |
f1e6e072 | 21480 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21481 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21482 | list_to_add = cu->list_in_scope; |
c906108c SS |
21483 | break; |
21484 | case DW_TAG_enumerator: | |
e142c38c | 21485 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21486 | if (attr != nullptr) |
c906108c | 21487 | { |
e7c27a73 | 21488 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21489 | } |
63d06c5c DC |
21490 | { |
21491 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21492 | DW_TAG_class_type, etc. block. */ | |
21493 | ||
804d2729 | 21494 | list_to_add |
c24bdb02 | 21495 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21496 | && cu->language == language_cplus |
c24bdb02 | 21497 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21498 | : cu->list_in_scope); |
63d06c5c | 21499 | } |
c906108c | 21500 | break; |
74921315 | 21501 | case DW_TAG_imported_declaration: |
5c4e30ca | 21502 | case DW_TAG_namespace: |
f1e6e072 | 21503 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21504 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21505 | break; |
530e8392 KB |
21506 | case DW_TAG_module: |
21507 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21508 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21509 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21510 | break; |
4357ac6c | 21511 | case DW_TAG_common_block: |
f1e6e072 | 21512 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21513 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21514 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21515 | break; |
c906108c SS |
21516 | default: |
21517 | /* Not a tag we recognize. Hopefully we aren't processing | |
21518 | trash data, but since we must specifically ignore things | |
21519 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21520 | this point. */ |
b98664d3 | 21521 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21522 | dwarf_tag_name (die->tag)); |
c906108c SS |
21523 | break; |
21524 | } | |
df8a16a1 | 21525 | |
e37fd15a SW |
21526 | if (suppress_add) |
21527 | { | |
21528 | sym->hash_next = objfile->template_symbols; | |
21529 | objfile->template_symbols = sym; | |
21530 | list_to_add = NULL; | |
21531 | } | |
21532 | ||
21533 | if (list_to_add != NULL) | |
d3cb6808 | 21534 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21535 | |
df8a16a1 DJ |
21536 | /* For the benefit of old versions of GCC, check for anonymous |
21537 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21538 | if (!cu->processing_has_namespace_info |
94af9270 | 21539 | && cu->language == language_cplus) |
c24bdb02 | 21540 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21541 | } |
21542 | return (sym); | |
21543 | } | |
21544 | ||
98bfdba5 PA |
21545 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21546 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21547 | standard (v4) is not entirely clear about the meaning of using | |
21548 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21549 | wider than the data. The conclusion of a discussion on the DWARF | |
21550 | list was that this is unspecified. We choose to always zero-extend | |
21551 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21552 | |
98bfdba5 | 21553 | static gdb_byte * |
ff39bb5e | 21554 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21555 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21556 | { |
518817b3 | 21557 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21558 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21559 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21560 | LONGEST l = DW_UNSND (attr); |
21561 | ||
21562 | if (bits < sizeof (*value) * 8) | |
21563 | { | |
21564 | l &= ((LONGEST) 1 << bits) - 1; | |
21565 | *value = l; | |
21566 | } | |
21567 | else if (bits == sizeof (*value) * 8) | |
21568 | *value = l; | |
21569 | else | |
21570 | { | |
224c3ddb | 21571 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21572 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21573 | return bytes; | |
21574 | } | |
21575 | ||
21576 | return NULL; | |
21577 | } | |
21578 | ||
21579 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21580 | the value does not fit in *VALUE, set *BYTES - either already | |
21581 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21582 | or, set *BATON, if we translated the constant to a location | |
21583 | expression. */ | |
21584 | ||
21585 | static void | |
ff39bb5e | 21586 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21587 | const char *name, struct obstack *obstack, |
21588 | struct dwarf2_cu *cu, | |
d521ce57 | 21589 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21590 | struct dwarf2_locexpr_baton **baton) |
21591 | { | |
518817b3 | 21592 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21593 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21594 | struct dwarf_block *blk; |
98bfdba5 PA |
21595 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21596 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21597 | ||
21598 | *value = 0; | |
21599 | *bytes = NULL; | |
21600 | *baton = NULL; | |
c906108c SS |
21601 | |
21602 | switch (attr->form) | |
21603 | { | |
21604 | case DW_FORM_addr: | |
336d760d | 21605 | case DW_FORM_addrx: |
3019eac3 | 21606 | case DW_FORM_GNU_addr_index: |
ac56253d | 21607 | { |
ac56253d TT |
21608 | gdb_byte *data; |
21609 | ||
98bfdba5 PA |
21610 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21611 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21612 | cu_header->addr_size, |
98bfdba5 | 21613 | TYPE_LENGTH (type)); |
ac56253d TT |
21614 | /* Symbols of this form are reasonably rare, so we just |
21615 | piggyback on the existing location code rather than writing | |
21616 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21617 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21618 | (*baton)->per_cu = cu->per_cu; |
21619 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21620 | |
98bfdba5 | 21621 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21622 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21623 | (*baton)->data = data; |
ac56253d TT |
21624 | |
21625 | data[0] = DW_OP_addr; | |
21626 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21627 | byte_order, DW_ADDR (attr)); | |
21628 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21629 | } |
c906108c | 21630 | break; |
4ac36638 | 21631 | case DW_FORM_string: |
93b5768b | 21632 | case DW_FORM_strp: |
cf532bd1 | 21633 | case DW_FORM_strx: |
3019eac3 | 21634 | case DW_FORM_GNU_str_index: |
36586728 | 21635 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21636 | /* DW_STRING is already allocated on the objfile obstack, point |
21637 | directly to it. */ | |
d521ce57 | 21638 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21639 | break; |
c906108c SS |
21640 | case DW_FORM_block1: |
21641 | case DW_FORM_block2: | |
21642 | case DW_FORM_block4: | |
21643 | case DW_FORM_block: | |
2dc7f7b3 | 21644 | case DW_FORM_exprloc: |
0224619f | 21645 | case DW_FORM_data16: |
c906108c | 21646 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21647 | if (TYPE_LENGTH (type) != blk->size) |
21648 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21649 | TYPE_LENGTH (type)); | |
21650 | *bytes = blk->data; | |
c906108c | 21651 | break; |
2df3850c JM |
21652 | |
21653 | /* The DW_AT_const_value attributes are supposed to carry the | |
21654 | symbol's value "represented as it would be on the target | |
21655 | architecture." By the time we get here, it's already been | |
21656 | converted to host endianness, so we just need to sign- or | |
21657 | zero-extend it as appropriate. */ | |
21658 | case DW_FORM_data1: | |
3aef2284 | 21659 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21660 | break; |
c906108c | 21661 | case DW_FORM_data2: |
3aef2284 | 21662 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21663 | break; |
c906108c | 21664 | case DW_FORM_data4: |
3aef2284 | 21665 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21666 | break; |
c906108c | 21667 | case DW_FORM_data8: |
3aef2284 | 21668 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21669 | break; |
21670 | ||
c906108c | 21671 | case DW_FORM_sdata: |
663c44ac | 21672 | case DW_FORM_implicit_const: |
98bfdba5 | 21673 | *value = DW_SND (attr); |
2df3850c JM |
21674 | break; |
21675 | ||
c906108c | 21676 | case DW_FORM_udata: |
98bfdba5 | 21677 | *value = DW_UNSND (attr); |
c906108c | 21678 | break; |
2df3850c | 21679 | |
c906108c | 21680 | default: |
b98664d3 | 21681 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21682 | dwarf_form_name (attr->form)); |
98bfdba5 | 21683 | *value = 0; |
c906108c SS |
21684 | break; |
21685 | } | |
21686 | } | |
21687 | ||
2df3850c | 21688 | |
98bfdba5 PA |
21689 | /* Copy constant value from an attribute to a symbol. */ |
21690 | ||
2df3850c | 21691 | static void |
ff39bb5e | 21692 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21693 | struct dwarf2_cu *cu) |
2df3850c | 21694 | { |
518817b3 | 21695 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21696 | LONGEST value; |
d521ce57 | 21697 | const gdb_byte *bytes; |
98bfdba5 | 21698 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21699 | |
98bfdba5 | 21700 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21701 | sym->print_name (), |
98bfdba5 PA |
21702 | &objfile->objfile_obstack, cu, |
21703 | &value, &bytes, &baton); | |
2df3850c | 21704 | |
98bfdba5 PA |
21705 | if (baton != NULL) |
21706 | { | |
98bfdba5 | 21707 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21708 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21709 | } |
21710 | else if (bytes != NULL) | |
21711 | { | |
21712 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21713 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21714 | } |
21715 | else | |
21716 | { | |
21717 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21718 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21719 | } |
2df3850c JM |
21720 | } |
21721 | ||
c906108c SS |
21722 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21723 | ||
21724 | static struct type * | |
e7c27a73 | 21725 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21726 | { |
c906108c | 21727 | struct attribute *type_attr; |
c906108c | 21728 | |
e142c38c | 21729 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21730 | if (!type_attr) |
21731 | { | |
518817b3 | 21732 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21733 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21734 | return objfile_type (objfile)->builtin_void; |
c906108c | 21735 | } |
348e048f | 21736 | |
673bfd45 | 21737 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21738 | } |
21739 | ||
b4ba55a1 JB |
21740 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21741 | that allows to find parallel types through that information instead | |
21742 | of having to do expensive parallel lookups by type name. */ | |
21743 | ||
21744 | static int | |
21745 | need_gnat_info (struct dwarf2_cu *cu) | |
21746 | { | |
de4cb04a JB |
21747 | /* Assume that the Ada compiler was GNAT, which always produces |
21748 | the auxiliary information. */ | |
21749 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21750 | } |
21751 | ||
b4ba55a1 JB |
21752 | /* Return the auxiliary type of the die in question using its |
21753 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21754 | attribute is not present. */ | |
21755 | ||
21756 | static struct type * | |
21757 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21758 | { | |
b4ba55a1 | 21759 | struct attribute *type_attr; |
b4ba55a1 JB |
21760 | |
21761 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21762 | if (!type_attr) | |
21763 | return NULL; | |
21764 | ||
673bfd45 | 21765 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21766 | } |
21767 | ||
21768 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21769 | descriptive type accordingly. */ | |
21770 | ||
21771 | static void | |
21772 | set_descriptive_type (struct type *type, struct die_info *die, | |
21773 | struct dwarf2_cu *cu) | |
21774 | { | |
21775 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21776 | ||
21777 | if (descriptive_type) | |
21778 | { | |
21779 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21780 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21781 | } | |
21782 | } | |
21783 | ||
c906108c SS |
21784 | /* Return the containing type of the die in question using its |
21785 | DW_AT_containing_type attribute. */ | |
21786 | ||
21787 | static struct type * | |
e7c27a73 | 21788 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21789 | { |
c906108c | 21790 | struct attribute *type_attr; |
518817b3 | 21791 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21792 | |
e142c38c | 21793 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21794 | if (!type_attr) |
21795 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21796 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21797 | |
673bfd45 | 21798 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21799 | } |
21800 | ||
ac9ec31b DE |
21801 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21802 | ||
21803 | static struct type * | |
21804 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21805 | { | |
518817b3 SM |
21806 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21807 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21808 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21809 | char *saved; |
ac9ec31b | 21810 | |
528e1572 SM |
21811 | std::string message |
21812 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21813 | objfile_name (objfile), | |
21814 | sect_offset_str (cu->header.sect_off), | |
21815 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21816 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21817 | |
19f392bc | 21818 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21819 | } |
21820 | ||
673bfd45 | 21821 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21822 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21823 | DW_AT_containing_type. | |
673bfd45 DE |
21824 | If there is no type substitute an error marker. */ |
21825 | ||
c906108c | 21826 | static struct type * |
ff39bb5e | 21827 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21828 | struct dwarf2_cu *cu) |
c906108c | 21829 | { |
518817b3 SM |
21830 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21831 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21832 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21833 | struct type *this_type; |
21834 | ||
ac9ec31b DE |
21835 | gdb_assert (attr->name == DW_AT_type |
21836 | || attr->name == DW_AT_GNAT_descriptive_type | |
21837 | || attr->name == DW_AT_containing_type); | |
21838 | ||
673bfd45 DE |
21839 | /* First see if we have it cached. */ |
21840 | ||
36586728 TT |
21841 | if (attr->form == DW_FORM_GNU_ref_alt) |
21842 | { | |
21843 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21844 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21845 | |
ed2dc618 SM |
21846 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21847 | dwarf2_per_objfile); | |
9c541725 | 21848 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21849 | } |
cd6c91b4 | 21850 | else if (attr->form_is_ref ()) |
673bfd45 | 21851 | { |
9c541725 | 21852 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21853 | |
9c541725 | 21854 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21855 | } |
55f1336d | 21856 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21857 | { |
ac9ec31b | 21858 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21859 | |
ac9ec31b | 21860 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21861 | } |
21862 | else | |
21863 | { | |
b98664d3 | 21864 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21865 | " at %s [in module %s]"), |
21866 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21867 | objfile_name (objfile)); |
ac9ec31b | 21868 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21869 | } |
21870 | ||
21871 | /* If not cached we need to read it in. */ | |
21872 | ||
21873 | if (this_type == NULL) | |
21874 | { | |
ac9ec31b | 21875 | struct die_info *type_die = NULL; |
673bfd45 DE |
21876 | struct dwarf2_cu *type_cu = cu; |
21877 | ||
cd6c91b4 | 21878 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21879 | type_die = follow_die_ref (die, attr, &type_cu); |
21880 | if (type_die == NULL) | |
21881 | return build_error_marker_type (cu, die); | |
21882 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21883 | from an inter-CU reference and the type's CU got expanded before |
21884 | ours. */ | |
ac9ec31b | 21885 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21886 | } |
21887 | ||
21888 | /* If we still don't have a type use an error marker. */ | |
21889 | ||
21890 | if (this_type == NULL) | |
ac9ec31b | 21891 | return build_error_marker_type (cu, die); |
673bfd45 | 21892 | |
f792889a | 21893 | return this_type; |
c906108c SS |
21894 | } |
21895 | ||
673bfd45 DE |
21896 | /* Return the type in DIE, CU. |
21897 | Returns NULL for invalid types. | |
21898 | ||
02142a6c | 21899 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21900 | and only reads the die in if necessary. |
21901 | ||
21902 | NOTE: This can be called when reading in partial or full symbols. */ | |
21903 | ||
f792889a | 21904 | static struct type * |
e7c27a73 | 21905 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21906 | { |
f792889a DJ |
21907 | struct type *this_type; |
21908 | ||
21909 | this_type = get_die_type (die, cu); | |
21910 | if (this_type) | |
21911 | return this_type; | |
21912 | ||
673bfd45 DE |
21913 | return read_type_die_1 (die, cu); |
21914 | } | |
21915 | ||
21916 | /* Read the type in DIE, CU. | |
21917 | Returns NULL for invalid types. */ | |
21918 | ||
21919 | static struct type * | |
21920 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21921 | { | |
21922 | struct type *this_type = NULL; | |
21923 | ||
c906108c SS |
21924 | switch (die->tag) |
21925 | { | |
21926 | case DW_TAG_class_type: | |
680b30c7 | 21927 | case DW_TAG_interface_type: |
c906108c SS |
21928 | case DW_TAG_structure_type: |
21929 | case DW_TAG_union_type: | |
f792889a | 21930 | this_type = read_structure_type (die, cu); |
c906108c SS |
21931 | break; |
21932 | case DW_TAG_enumeration_type: | |
f792889a | 21933 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21934 | break; |
21935 | case DW_TAG_subprogram: | |
21936 | case DW_TAG_subroutine_type: | |
edb3359d | 21937 | case DW_TAG_inlined_subroutine: |
f792889a | 21938 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21939 | break; |
21940 | case DW_TAG_array_type: | |
f792889a | 21941 | this_type = read_array_type (die, cu); |
c906108c | 21942 | break; |
72019c9c | 21943 | case DW_TAG_set_type: |
f792889a | 21944 | this_type = read_set_type (die, cu); |
72019c9c | 21945 | break; |
c906108c | 21946 | case DW_TAG_pointer_type: |
f792889a | 21947 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21948 | break; |
21949 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21950 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21951 | break; |
21952 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21953 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21954 | break; | |
21955 | case DW_TAG_rvalue_reference_type: | |
21956 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21957 | break; |
21958 | case DW_TAG_const_type: | |
f792889a | 21959 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21960 | break; |
21961 | case DW_TAG_volatile_type: | |
f792889a | 21962 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21963 | break; |
06d66ee9 TT |
21964 | case DW_TAG_restrict_type: |
21965 | this_type = read_tag_restrict_type (die, cu); | |
21966 | break; | |
c906108c | 21967 | case DW_TAG_string_type: |
f792889a | 21968 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21969 | break; |
21970 | case DW_TAG_typedef: | |
f792889a | 21971 | this_type = read_typedef (die, cu); |
c906108c | 21972 | break; |
a02abb62 | 21973 | case DW_TAG_subrange_type: |
f792889a | 21974 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21975 | break; |
c906108c | 21976 | case DW_TAG_base_type: |
f792889a | 21977 | this_type = read_base_type (die, cu); |
c906108c | 21978 | break; |
81a17f79 | 21979 | case DW_TAG_unspecified_type: |
f792889a | 21980 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21981 | break; |
0114d602 DJ |
21982 | case DW_TAG_namespace: |
21983 | this_type = read_namespace_type (die, cu); | |
21984 | break; | |
f55ee35c JK |
21985 | case DW_TAG_module: |
21986 | this_type = read_module_type (die, cu); | |
21987 | break; | |
a2c2acaf MW |
21988 | case DW_TAG_atomic_type: |
21989 | this_type = read_tag_atomic_type (die, cu); | |
21990 | break; | |
c906108c | 21991 | default: |
b98664d3 | 21992 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21993 | dwarf_tag_name (die->tag)); |
c906108c SS |
21994 | break; |
21995 | } | |
63d06c5c | 21996 | |
f792889a | 21997 | return this_type; |
63d06c5c DC |
21998 | } |
21999 | ||
abc72ce4 DE |
22000 | /* See if we can figure out if the class lives in a namespace. We do |
22001 | this by looking for a member function; its demangled name will | |
22002 | contain namespace info, if there is any. | |
22003 | Return the computed name or NULL. | |
22004 | Space for the result is allocated on the objfile's obstack. | |
22005 | This is the full-die version of guess_partial_die_structure_name. | |
22006 | In this case we know DIE has no useful parent. */ | |
22007 | ||
43816ebc | 22008 | static const char * |
abc72ce4 DE |
22009 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22010 | { | |
22011 | struct die_info *spec_die; | |
22012 | struct dwarf2_cu *spec_cu; | |
22013 | struct die_info *child; | |
518817b3 | 22014 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22015 | |
22016 | spec_cu = cu; | |
22017 | spec_die = die_specification (die, &spec_cu); | |
22018 | if (spec_die != NULL) | |
22019 | { | |
22020 | die = spec_die; | |
22021 | cu = spec_cu; | |
22022 | } | |
22023 | ||
22024 | for (child = die->child; | |
22025 | child != NULL; | |
22026 | child = child->sibling) | |
22027 | { | |
22028 | if (child->tag == DW_TAG_subprogram) | |
22029 | { | |
73b9be8b | 22030 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22031 | |
7d45c7c3 | 22032 | if (linkage_name != NULL) |
abc72ce4 | 22033 | { |
43816ebc TT |
22034 | gdb::unique_xmalloc_ptr<char> actual_name |
22035 | (language_class_name_from_physname (cu->language_defn, | |
22036 | linkage_name)); | |
22037 | const char *name = NULL; | |
abc72ce4 DE |
22038 | |
22039 | if (actual_name != NULL) | |
22040 | { | |
15d034d0 | 22041 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22042 | |
22043 | if (die_name != NULL | |
43816ebc | 22044 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22045 | { |
22046 | /* Strip off the class name from the full name. | |
22047 | We want the prefix. */ | |
22048 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22049 | int actual_name_len = strlen (actual_name.get ()); |
22050 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22051 | |
22052 | /* Test for '::' as a sanity check. */ | |
22053 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22054 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22055 | name = obstack_strndup ( |
e3b94546 | 22056 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22057 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22058 | } |
22059 | } | |
abc72ce4 DE |
22060 | return name; |
22061 | } | |
22062 | } | |
22063 | } | |
22064 | ||
22065 | return NULL; | |
22066 | } | |
22067 | ||
96408a79 SA |
22068 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22069 | prefix part in such case. See | |
22070 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22071 | ||
a121b7c1 | 22072 | static const char * |
96408a79 SA |
22073 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22074 | { | |
22075 | struct attribute *attr; | |
e6a959d6 | 22076 | const char *base; |
96408a79 SA |
22077 | |
22078 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22079 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22080 | return NULL; | |
22081 | ||
7d45c7c3 | 22082 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22083 | return NULL; |
22084 | ||
73b9be8b | 22085 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22086 | if (attr == NULL || DW_STRING (attr) == NULL) |
22087 | return NULL; | |
22088 | ||
22089 | /* dwarf2_name had to be already called. */ | |
22090 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22091 | ||
22092 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22093 | base = strrchr (DW_STRING (attr), ':'); | |
22094 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22095 | return ""; | |
22096 | ||
518817b3 | 22097 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
22098 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
22099 | DW_STRING (attr), | |
22100 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22101 | } |
22102 | ||
fdde2d81 | 22103 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22104 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22105 | |
0114d602 DJ |
22106 | For example, if we're within the method foo() in the following |
22107 | code: | |
22108 | ||
22109 | namespace N { | |
22110 | class C { | |
22111 | void foo () { | |
22112 | } | |
22113 | }; | |
22114 | } | |
22115 | ||
22116 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22117 | |
0d5cff50 | 22118 | static const char * |
e142c38c | 22119 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22120 | { |
518817b3 SM |
22121 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22122 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22123 | struct die_info *parent, *spec_die; |
22124 | struct dwarf2_cu *spec_cu; | |
22125 | struct type *parent_type; | |
a121b7c1 | 22126 | const char *retval; |
63d06c5c | 22127 | |
9c37b5ae | 22128 | if (cu->language != language_cplus |
c44af4eb TT |
22129 | && cu->language != language_fortran && cu->language != language_d |
22130 | && cu->language != language_rust) | |
0114d602 DJ |
22131 | return ""; |
22132 | ||
96408a79 SA |
22133 | retval = anonymous_struct_prefix (die, cu); |
22134 | if (retval) | |
22135 | return retval; | |
22136 | ||
0114d602 DJ |
22137 | /* We have to be careful in the presence of DW_AT_specification. |
22138 | For example, with GCC 3.4, given the code | |
22139 | ||
22140 | namespace N { | |
22141 | void foo() { | |
22142 | // Definition of N::foo. | |
22143 | } | |
22144 | } | |
22145 | ||
22146 | then we'll have a tree of DIEs like this: | |
22147 | ||
22148 | 1: DW_TAG_compile_unit | |
22149 | 2: DW_TAG_namespace // N | |
22150 | 3: DW_TAG_subprogram // declaration of N::foo | |
22151 | 4: DW_TAG_subprogram // definition of N::foo | |
22152 | DW_AT_specification // refers to die #3 | |
22153 | ||
22154 | Thus, when processing die #4, we have to pretend that we're in | |
22155 | the context of its DW_AT_specification, namely the contex of die | |
22156 | #3. */ | |
22157 | spec_cu = cu; | |
22158 | spec_die = die_specification (die, &spec_cu); | |
22159 | if (spec_die == NULL) | |
22160 | parent = die->parent; | |
22161 | else | |
63d06c5c | 22162 | { |
0114d602 DJ |
22163 | parent = spec_die->parent; |
22164 | cu = spec_cu; | |
63d06c5c | 22165 | } |
0114d602 DJ |
22166 | |
22167 | if (parent == NULL) | |
22168 | return ""; | |
98bfdba5 PA |
22169 | else if (parent->building_fullname) |
22170 | { | |
22171 | const char *name; | |
22172 | const char *parent_name; | |
22173 | ||
22174 | /* It has been seen on RealView 2.2 built binaries, | |
22175 | DW_TAG_template_type_param types actually _defined_ as | |
22176 | children of the parent class: | |
22177 | ||
22178 | enum E {}; | |
22179 | template class <class Enum> Class{}; | |
22180 | Class<enum E> class_e; | |
22181 | ||
22182 | 1: DW_TAG_class_type (Class) | |
22183 | 2: DW_TAG_enumeration_type (E) | |
22184 | 3: DW_TAG_enumerator (enum1:0) | |
22185 | 3: DW_TAG_enumerator (enum2:1) | |
22186 | ... | |
22187 | 2: DW_TAG_template_type_param | |
22188 | DW_AT_type DW_FORM_ref_udata (E) | |
22189 | ||
22190 | Besides being broken debug info, it can put GDB into an | |
22191 | infinite loop. Consider: | |
22192 | ||
22193 | When we're building the full name for Class<E>, we'll start | |
22194 | at Class, and go look over its template type parameters, | |
22195 | finding E. We'll then try to build the full name of E, and | |
22196 | reach here. We're now trying to build the full name of E, | |
22197 | and look over the parent DIE for containing scope. In the | |
22198 | broken case, if we followed the parent DIE of E, we'd again | |
22199 | find Class, and once again go look at its template type | |
22200 | arguments, etc., etc. Simply don't consider such parent die | |
22201 | as source-level parent of this die (it can't be, the language | |
22202 | doesn't allow it), and break the loop here. */ | |
22203 | name = dwarf2_name (die, cu); | |
22204 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22205 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22206 | name ? name : "<unknown>", |
22207 | parent_name ? parent_name : "<unknown>"); | |
22208 | return ""; | |
22209 | } | |
63d06c5c | 22210 | else |
0114d602 DJ |
22211 | switch (parent->tag) |
22212 | { | |
63d06c5c | 22213 | case DW_TAG_namespace: |
0114d602 | 22214 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22215 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22216 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22217 | Work around this problem here. */ | |
22218 | if (cu->language == language_cplus | |
e86ca25f | 22219 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22220 | return ""; |
0114d602 | 22221 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22222 | return TYPE_NAME (parent_type); |
63d06c5c | 22223 | case DW_TAG_class_type: |
680b30c7 | 22224 | case DW_TAG_interface_type: |
63d06c5c | 22225 | case DW_TAG_structure_type: |
0114d602 | 22226 | case DW_TAG_union_type: |
f55ee35c | 22227 | case DW_TAG_module: |
0114d602 | 22228 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22229 | if (TYPE_NAME (parent_type) != NULL) |
22230 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22231 | else |
22232 | /* An anonymous structure is only allowed non-static data | |
22233 | members; no typedefs, no member functions, et cetera. | |
22234 | So it does not need a prefix. */ | |
22235 | return ""; | |
abc72ce4 | 22236 | case DW_TAG_compile_unit: |
95554aad | 22237 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22238 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22239 | if (cu->language == language_cplus | |
fd5866f6 | 22240 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
22241 | && die->child != NULL |
22242 | && (die->tag == DW_TAG_class_type | |
22243 | || die->tag == DW_TAG_structure_type | |
22244 | || die->tag == DW_TAG_union_type)) | |
22245 | { | |
43816ebc | 22246 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22247 | if (name != NULL) |
22248 | return name; | |
22249 | } | |
22250 | return ""; | |
0a4b0913 AB |
22251 | case DW_TAG_subprogram: |
22252 | /* Nested subroutines in Fortran get a prefix with the name | |
22253 | of the parent's subroutine. */ | |
22254 | if (cu->language == language_fortran) | |
22255 | { | |
22256 | if ((die->tag == DW_TAG_subprogram) | |
22257 | && (dwarf2_name (parent, cu) != NULL)) | |
22258 | return dwarf2_name (parent, cu); | |
22259 | } | |
22260 | return determine_prefix (parent, cu); | |
3d567982 TT |
22261 | case DW_TAG_enumeration_type: |
22262 | parent_type = read_type_die (parent, cu); | |
22263 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22264 | { | |
e86ca25f TT |
22265 | if (TYPE_NAME (parent_type) != NULL) |
22266 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22267 | return ""; |
22268 | } | |
22269 | /* Fall through. */ | |
63d06c5c | 22270 | default: |
8176b9b8 | 22271 | return determine_prefix (parent, cu); |
63d06c5c | 22272 | } |
63d06c5c DC |
22273 | } |
22274 | ||
3e43a32a MS |
22275 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22276 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22277 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22278 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22279 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22280 | |
f55ee35c | 22281 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22282 | |
22283 | static char * | |
f55ee35c JK |
22284 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22285 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22286 | { |
f55ee35c | 22287 | const char *lead = ""; |
5c315b68 | 22288 | const char *sep; |
63d06c5c | 22289 | |
3e43a32a MS |
22290 | if (suffix == NULL || suffix[0] == '\0' |
22291 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22292 | sep = ""; |
45280282 IB |
22293 | else if (cu->language == language_d) |
22294 | { | |
22295 | /* For D, the 'main' function could be defined in any module, but it | |
22296 | should never be prefixed. */ | |
22297 | if (strcmp (suffix, "D main") == 0) | |
22298 | { | |
22299 | prefix = ""; | |
22300 | sep = ""; | |
22301 | } | |
22302 | else | |
22303 | sep = "."; | |
22304 | } | |
f55ee35c JK |
22305 | else if (cu->language == language_fortran && physname) |
22306 | { | |
22307 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22308 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22309 | ||
22310 | lead = "__"; | |
22311 | sep = "_MOD_"; | |
22312 | } | |
987504bb JJ |
22313 | else |
22314 | sep = "::"; | |
63d06c5c | 22315 | |
6dd47d34 DE |
22316 | if (prefix == NULL) |
22317 | prefix = ""; | |
22318 | if (suffix == NULL) | |
22319 | suffix = ""; | |
22320 | ||
987504bb JJ |
22321 | if (obs == NULL) |
22322 | { | |
3e43a32a | 22323 | char *retval |
224c3ddb SM |
22324 | = ((char *) |
22325 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22326 | |
f55ee35c JK |
22327 | strcpy (retval, lead); |
22328 | strcat (retval, prefix); | |
6dd47d34 DE |
22329 | strcat (retval, sep); |
22330 | strcat (retval, suffix); | |
63d06c5c DC |
22331 | return retval; |
22332 | } | |
987504bb JJ |
22333 | else |
22334 | { | |
22335 | /* We have an obstack. */ | |
f55ee35c | 22336 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22337 | } |
63d06c5c DC |
22338 | } |
22339 | ||
c906108c SS |
22340 | /* Return sibling of die, NULL if no sibling. */ |
22341 | ||
f9aca02d | 22342 | static struct die_info * |
fba45db2 | 22343 | sibling_die (struct die_info *die) |
c906108c | 22344 | { |
639d11d3 | 22345 | return die->sibling; |
c906108c SS |
22346 | } |
22347 | ||
71c25dea TT |
22348 | /* Get name of a die, return NULL if not found. */ |
22349 | ||
15d034d0 TT |
22350 | static const char * |
22351 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22352 | struct obstack *obstack) |
22353 | { | |
22354 | if (name && cu->language == language_cplus) | |
22355 | { | |
2f408ecb | 22356 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22357 | |
2f408ecb | 22358 | if (!canon_name.empty ()) |
71c25dea | 22359 | { |
2f408ecb | 22360 | if (canon_name != name) |
efba19b0 | 22361 | name = obstack_strdup (obstack, canon_name); |
71c25dea TT |
22362 | } |
22363 | } | |
22364 | ||
22365 | return name; | |
c906108c SS |
22366 | } |
22367 | ||
96553a0c DE |
22368 | /* Get name of a die, return NULL if not found. |
22369 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22370 | |
15d034d0 | 22371 | static const char * |
e142c38c | 22372 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22373 | { |
22374 | struct attribute *attr; | |
518817b3 | 22375 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22376 | |
e142c38c | 22377 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22378 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22379 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22380 | && die->tag != DW_TAG_class_type |
22381 | && die->tag != DW_TAG_interface_type | |
22382 | && die->tag != DW_TAG_structure_type | |
22383 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22384 | return NULL; |
22385 | ||
22386 | switch (die->tag) | |
22387 | { | |
22388 | case DW_TAG_compile_unit: | |
95554aad | 22389 | case DW_TAG_partial_unit: |
71c25dea TT |
22390 | /* Compilation units have a DW_AT_name that is a filename, not |
22391 | a source language identifier. */ | |
22392 | case DW_TAG_enumeration_type: | |
22393 | case DW_TAG_enumerator: | |
22394 | /* These tags always have simple identifiers already; no need | |
22395 | to canonicalize them. */ | |
22396 | return DW_STRING (attr); | |
907af001 | 22397 | |
96553a0c DE |
22398 | case DW_TAG_namespace: |
22399 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22400 | return DW_STRING (attr); | |
22401 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22402 | ||
907af001 UW |
22403 | case DW_TAG_class_type: |
22404 | case DW_TAG_interface_type: | |
22405 | case DW_TAG_structure_type: | |
22406 | case DW_TAG_union_type: | |
22407 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22408 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22409 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22410 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22411 | if (attr && DW_STRING (attr) |
61012eef GB |
22412 | && (startswith (DW_STRING (attr), "._") |
22413 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22414 | return NULL; |
53832f31 TT |
22415 | |
22416 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22417 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22418 | if (!attr || DW_STRING (attr) == NULL) | |
22419 | { | |
73b9be8b | 22420 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22421 | if (attr == NULL || DW_STRING (attr) == NULL) |
22422 | return NULL; | |
22423 | ||
df5c6c50 JK |
22424 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22425 | call for the same DIE. */ | |
22426 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22427 | { |
43816ebc TT |
22428 | gdb::unique_xmalloc_ptr<char> demangled |
22429 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
22430 | ||
e6a959d6 | 22431 | const char *base; |
96408a79 | 22432 | |
53832f31 | 22433 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22434 | DW_STRING (attr) |
021887d8 | 22435 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 22436 | demangled.get ()); |
53832f31 | 22437 | DW_STRING_IS_CANONICAL (attr) = 1; |
96408a79 SA |
22438 | |
22439 | /* Strip any leading namespaces/classes, keep only the base name. | |
22440 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22441 | base = strrchr (DW_STRING (attr), ':'); | |
22442 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22443 | return &base[1]; | |
22444 | else | |
22445 | return DW_STRING (attr); | |
53832f31 TT |
22446 | } |
22447 | } | |
907af001 UW |
22448 | break; |
22449 | ||
71c25dea | 22450 | default: |
907af001 UW |
22451 | break; |
22452 | } | |
22453 | ||
22454 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22455 | { | |
22456 | DW_STRING (attr) | |
22457 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22458 | &objfile->per_bfd->storage_obstack); |
907af001 | 22459 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22460 | } |
907af001 | 22461 | return DW_STRING (attr); |
9219021c DC |
22462 | } |
22463 | ||
22464 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22465 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22466 | containing the return value on output. */ | |
9219021c DC |
22467 | |
22468 | static struct die_info * | |
f2f0e013 | 22469 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22470 | { |
22471 | struct attribute *attr; | |
9219021c | 22472 | |
f2f0e013 | 22473 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22474 | if (attr == NULL) |
22475 | return NULL; | |
22476 | ||
f2f0e013 | 22477 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22478 | } |
22479 | ||
fa9c3fa0 TT |
22480 | /* A convenience function that returns an "unknown" DWARF name, |
22481 | including the value of V. STR is the name of the entity being | |
22482 | printed, e.g., "TAG". */ | |
22483 | ||
22484 | static const char * | |
22485 | dwarf_unknown (const char *str, unsigned v) | |
22486 | { | |
22487 | char *cell = get_print_cell (); | |
22488 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
22489 | return cell; | |
22490 | } | |
22491 | ||
c906108c SS |
22492 | /* Convert a DIE tag into its string name. */ |
22493 | ||
f39c6ffd | 22494 | static const char * |
aa1ee363 | 22495 | dwarf_tag_name (unsigned tag) |
c906108c | 22496 | { |
f39c6ffd TT |
22497 | const char *name = get_DW_TAG_name (tag); |
22498 | ||
22499 | if (name == NULL) | |
fa9c3fa0 | 22500 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
22501 | |
22502 | return name; | |
c906108c SS |
22503 | } |
22504 | ||
22505 | /* Convert a DWARF attribute code into its string name. */ | |
22506 | ||
f39c6ffd | 22507 | static const char * |
aa1ee363 | 22508 | dwarf_attr_name (unsigned attr) |
c906108c | 22509 | { |
f39c6ffd TT |
22510 | const char *name; |
22511 | ||
c764a876 | 22512 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22513 | if (attr == DW_AT_MIPS_fde) |
22514 | return "DW_AT_MIPS_fde"; | |
22515 | #else | |
22516 | if (attr == DW_AT_HP_block_index) | |
22517 | return "DW_AT_HP_block_index"; | |
c764a876 | 22518 | #endif |
f39c6ffd TT |
22519 | |
22520 | name = get_DW_AT_name (attr); | |
22521 | ||
22522 | if (name == NULL) | |
fa9c3fa0 | 22523 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
22524 | |
22525 | return name; | |
c906108c SS |
22526 | } |
22527 | ||
a084a2a6 AT |
22528 | /* Convert a unit type to corresponding DW_UT name. */ |
22529 | ||
22530 | static const char * | |
22531 | dwarf_unit_type_name (int unit_type) { | |
22532 | switch (unit_type) | |
22533 | { | |
22534 | case 0x01: | |
22535 | return "DW_UT_compile (0x01)"; | |
22536 | case 0x02: | |
22537 | return "DW_UT_type (0x02)"; | |
22538 | case 0x03: | |
22539 | return "DW_UT_partial (0x03)"; | |
22540 | case 0x04: | |
22541 | return "DW_UT_skeleton (0x04)"; | |
22542 | case 0x05: | |
22543 | return "DW_UT_split_compile (0x05)"; | |
22544 | case 0x06: | |
22545 | return "DW_UT_split_type (0x06)"; | |
22546 | case 0x80: | |
22547 | return "DW_UT_lo_user (0x80)"; | |
22548 | case 0xff: | |
22549 | return "DW_UT_hi_user (0xff)"; | |
22550 | default: | |
22551 | return nullptr; | |
22552 | } | |
22553 | } | |
22554 | ||
c906108c SS |
22555 | /* Convert a DWARF value form code into its string name. */ |
22556 | ||
f39c6ffd | 22557 | static const char * |
aa1ee363 | 22558 | dwarf_form_name (unsigned form) |
c906108c | 22559 | { |
f39c6ffd TT |
22560 | const char *name = get_DW_FORM_name (form); |
22561 | ||
22562 | if (name == NULL) | |
fa9c3fa0 | 22563 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
22564 | |
22565 | return name; | |
c906108c SS |
22566 | } |
22567 | ||
a121b7c1 | 22568 | static const char * |
fba45db2 | 22569 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22570 | { |
22571 | if (mybool) | |
22572 | return "TRUE"; | |
22573 | else | |
22574 | return "FALSE"; | |
22575 | } | |
22576 | ||
22577 | /* Convert a DWARF type code into its string name. */ | |
22578 | ||
f39c6ffd | 22579 | static const char * |
aa1ee363 | 22580 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22581 | { |
f39c6ffd | 22582 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22583 | |
f39c6ffd | 22584 | if (name == NULL) |
fa9c3fa0 | 22585 | return dwarf_unknown ("ATE", enc); |
c906108c | 22586 | |
f39c6ffd | 22587 | return name; |
c906108c | 22588 | } |
c906108c | 22589 | |
f9aca02d | 22590 | static void |
d97bc12b | 22591 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22592 | { |
22593 | unsigned int i; | |
22594 | ||
d97bc12b | 22595 | print_spaces (indent, f); |
9d8780f0 | 22596 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22597 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22598 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22599 | |
22600 | if (die->parent != NULL) | |
22601 | { | |
22602 | print_spaces (indent, f); | |
9d8780f0 SM |
22603 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22604 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22605 | } |
22606 | ||
22607 | print_spaces (indent, f); | |
22608 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22609 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22610 | |
d97bc12b DE |
22611 | print_spaces (indent, f); |
22612 | fprintf_unfiltered (f, " attributes:\n"); | |
22613 | ||
c906108c SS |
22614 | for (i = 0; i < die->num_attrs; ++i) |
22615 | { | |
d97bc12b DE |
22616 | print_spaces (indent, f); |
22617 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22618 | dwarf_attr_name (die->attrs[i].name), |
22619 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22620 | |
c906108c SS |
22621 | switch (die->attrs[i].form) |
22622 | { | |
c906108c | 22623 | case DW_FORM_addr: |
336d760d | 22624 | case DW_FORM_addrx: |
3019eac3 | 22625 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22626 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22627 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22628 | break; |
22629 | case DW_FORM_block2: | |
22630 | case DW_FORM_block4: | |
22631 | case DW_FORM_block: | |
22632 | case DW_FORM_block1: | |
56eb65bd SP |
22633 | fprintf_unfiltered (f, "block: size %s", |
22634 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22635 | break; |
2dc7f7b3 | 22636 | case DW_FORM_exprloc: |
56eb65bd SP |
22637 | fprintf_unfiltered (f, "expression: size %s", |
22638 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22639 | break; |
0224619f JK |
22640 | case DW_FORM_data16: |
22641 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22642 | break; | |
4568ecf9 DE |
22643 | case DW_FORM_ref_addr: |
22644 | fprintf_unfiltered (f, "ref address: "); | |
22645 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22646 | break; | |
36586728 TT |
22647 | case DW_FORM_GNU_ref_alt: |
22648 | fprintf_unfiltered (f, "alt ref address: "); | |
22649 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22650 | break; | |
10b3939b DJ |
22651 | case DW_FORM_ref1: |
22652 | case DW_FORM_ref2: | |
22653 | case DW_FORM_ref4: | |
4568ecf9 DE |
22654 | case DW_FORM_ref8: |
22655 | case DW_FORM_ref_udata: | |
d97bc12b | 22656 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22657 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22658 | break; |
c906108c SS |
22659 | case DW_FORM_data1: |
22660 | case DW_FORM_data2: | |
22661 | case DW_FORM_data4: | |
ce5d95e1 | 22662 | case DW_FORM_data8: |
c906108c SS |
22663 | case DW_FORM_udata: |
22664 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22665 | fprintf_unfiltered (f, "constant: %s", |
22666 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22667 | break; |
2dc7f7b3 TT |
22668 | case DW_FORM_sec_offset: |
22669 | fprintf_unfiltered (f, "section offset: %s", | |
22670 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22671 | break; | |
55f1336d | 22672 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22673 | fprintf_unfiltered (f, "signature: %s", |
22674 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22675 | break; |
c906108c | 22676 | case DW_FORM_string: |
4bdf3d34 | 22677 | case DW_FORM_strp: |
43988095 | 22678 | case DW_FORM_line_strp: |
cf532bd1 | 22679 | case DW_FORM_strx: |
3019eac3 | 22680 | case DW_FORM_GNU_str_index: |
36586728 | 22681 | case DW_FORM_GNU_strp_alt: |
8285870a | 22682 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22683 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22684 | ? DW_STRING (&die->attrs[i]) : "", |
22685 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22686 | break; |
22687 | case DW_FORM_flag: | |
22688 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22689 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22690 | else |
d97bc12b | 22691 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22692 | break; |
2dc7f7b3 TT |
22693 | case DW_FORM_flag_present: |
22694 | fprintf_unfiltered (f, "flag: TRUE"); | |
22695 | break; | |
a8329558 | 22696 | case DW_FORM_indirect: |
0963b4bd MS |
22697 | /* The reader will have reduced the indirect form to |
22698 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22699 | fprintf_unfiltered (f, |
3e43a32a | 22700 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22701 | break; |
663c44ac JK |
22702 | case DW_FORM_implicit_const: |
22703 | fprintf_unfiltered (f, "constant: %s", | |
22704 | plongest (DW_SND (&die->attrs[i]))); | |
22705 | break; | |
c906108c | 22706 | default: |
d97bc12b | 22707 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22708 | die->attrs[i].form); |
d97bc12b | 22709 | break; |
c906108c | 22710 | } |
d97bc12b | 22711 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22712 | } |
22713 | } | |
22714 | ||
f9aca02d | 22715 | static void |
d97bc12b | 22716 | dump_die_for_error (struct die_info *die) |
c906108c | 22717 | { |
d97bc12b DE |
22718 | dump_die_shallow (gdb_stderr, 0, die); |
22719 | } | |
22720 | ||
22721 | static void | |
22722 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22723 | { | |
22724 | int indent = level * 4; | |
22725 | ||
22726 | gdb_assert (die != NULL); | |
22727 | ||
22728 | if (level >= max_level) | |
22729 | return; | |
22730 | ||
22731 | dump_die_shallow (f, indent, die); | |
22732 | ||
22733 | if (die->child != NULL) | |
c906108c | 22734 | { |
d97bc12b DE |
22735 | print_spaces (indent, f); |
22736 | fprintf_unfiltered (f, " Children:"); | |
22737 | if (level + 1 < max_level) | |
22738 | { | |
22739 | fprintf_unfiltered (f, "\n"); | |
22740 | dump_die_1 (f, level + 1, max_level, die->child); | |
22741 | } | |
22742 | else | |
22743 | { | |
3e43a32a MS |
22744 | fprintf_unfiltered (f, |
22745 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22746 | } |
22747 | } | |
22748 | ||
22749 | if (die->sibling != NULL && level > 0) | |
22750 | { | |
22751 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22752 | } |
22753 | } | |
22754 | ||
d97bc12b DE |
22755 | /* This is called from the pdie macro in gdbinit.in. |
22756 | It's not static so gcc will keep a copy callable from gdb. */ | |
22757 | ||
22758 | void | |
22759 | dump_die (struct die_info *die, int max_level) | |
22760 | { | |
22761 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22762 | } | |
22763 | ||
f9aca02d | 22764 | static void |
51545339 | 22765 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22766 | { |
51545339 | 22767 | void **slot; |
c906108c | 22768 | |
9c541725 PA |
22769 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22770 | to_underlying (die->sect_off), | |
b64f50a1 | 22771 | INSERT); |
51545339 DJ |
22772 | |
22773 | *slot = die; | |
c906108c SS |
22774 | } |
22775 | ||
b64f50a1 JK |
22776 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22777 | required kind. */ | |
22778 | ||
22779 | static sect_offset | |
ff39bb5e | 22780 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22781 | { |
cd6c91b4 | 22782 | if (attr->form_is_ref ()) |
9c541725 | 22783 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22784 | |
b98664d3 | 22785 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22786 | dwarf_form_name (attr->form)); |
9c541725 | 22787 | return {}; |
c906108c SS |
22788 | } |
22789 | ||
43bbcdc2 PH |
22790 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22791 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22792 | |
43bbcdc2 | 22793 | static LONGEST |
ff39bb5e | 22794 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22795 | { |
663c44ac | 22796 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22797 | return DW_SND (attr); |
22798 | else if (attr->form == DW_FORM_udata | |
22799 | || attr->form == DW_FORM_data1 | |
22800 | || attr->form == DW_FORM_data2 | |
22801 | || attr->form == DW_FORM_data4 | |
22802 | || attr->form == DW_FORM_data8) | |
22803 | return DW_UNSND (attr); | |
22804 | else | |
22805 | { | |
cd6c91b4 | 22806 | /* For DW_FORM_data16 see attribute::form_is_constant. */ |
b98664d3 | 22807 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22808 | dwarf_form_name (attr->form)); |
22809 | return default_value; | |
22810 | } | |
22811 | } | |
22812 | ||
348e048f DE |
22813 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22814 | On entry *REF_CU is the CU of SRC_DIE. | |
22815 | On exit *REF_CU is the CU of the result. */ | |
22816 | ||
22817 | static struct die_info * | |
ff39bb5e | 22818 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22819 | struct dwarf2_cu **ref_cu) |
22820 | { | |
22821 | struct die_info *die; | |
22822 | ||
cd6c91b4 | 22823 | if (attr->form_is_ref ()) |
348e048f | 22824 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22825 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22826 | die = follow_die_sig (src_die, attr, ref_cu); |
22827 | else | |
22828 | { | |
22829 | dump_die_for_error (src_die); | |
22830 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22831 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22832 | } |
22833 | ||
22834 | return die; | |
03dd20cc DJ |
22835 | } |
22836 | ||
5c631832 | 22837 | /* Follow reference OFFSET. |
673bfd45 DE |
22838 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22839 | On exit *REF_CU is the CU of the result. | |
22840 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22841 | |
f9aca02d | 22842 | static struct die_info * |
9c541725 | 22843 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22844 | struct dwarf2_cu **ref_cu) |
c906108c | 22845 | { |
10b3939b | 22846 | struct die_info temp_die; |
f2f0e013 | 22847 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22848 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22849 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22850 | |
348e048f DE |
22851 | gdb_assert (cu->per_cu != NULL); |
22852 | ||
98bfdba5 PA |
22853 | target_cu = cu; |
22854 | ||
3019eac3 | 22855 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22856 | { |
22857 | /* .debug_types CUs cannot reference anything outside their CU. | |
22858 | If they need to, they have to reference a signatured type via | |
55f1336d | 22859 | DW_FORM_ref_sig8. */ |
9c541725 | 22860 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22861 | return NULL; |
348e048f | 22862 | } |
36586728 | 22863 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22864 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22865 | { |
22866 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22867 | |
9c541725 | 22868 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22869 | dwarf2_per_objfile); |
03dd20cc DJ |
22870 | |
22871 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22872 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22873 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22874 | |
10b3939b DJ |
22875 | target_cu = per_cu->cu; |
22876 | } | |
98bfdba5 PA |
22877 | else if (cu->dies == NULL) |
22878 | { | |
22879 | /* We're loading full DIEs during partial symbol reading. */ | |
22880 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 22881 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22882 | } |
c906108c | 22883 | |
f2f0e013 | 22884 | *ref_cu = target_cu; |
9c541725 | 22885 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22886 | |
22887 | if (target_cu != cu) | |
22888 | target_cu->ancestor = cu; | |
22889 | ||
9a3c8263 | 22890 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22891 | &temp_die, |
22892 | to_underlying (sect_off)); | |
5c631832 | 22893 | } |
10b3939b | 22894 | |
5c631832 JK |
22895 | /* Follow reference attribute ATTR of SRC_DIE. |
22896 | On entry *REF_CU is the CU of SRC_DIE. | |
22897 | On exit *REF_CU is the CU of the result. */ | |
22898 | ||
22899 | static struct die_info * | |
ff39bb5e | 22900 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22901 | struct dwarf2_cu **ref_cu) |
22902 | { | |
9c541725 | 22903 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22904 | struct dwarf2_cu *cu = *ref_cu; |
22905 | struct die_info *die; | |
22906 | ||
9c541725 | 22907 | die = follow_die_offset (sect_off, |
36586728 TT |
22908 | (attr->form == DW_FORM_GNU_ref_alt |
22909 | || cu->per_cu->is_dwz), | |
22910 | ref_cu); | |
5c631832 | 22911 | if (!die) |
9d8780f0 SM |
22912 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22913 | "at %s [in module %s]"), | |
22914 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 22915 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22916 | |
5c631832 JK |
22917 | return die; |
22918 | } | |
22919 | ||
9c541725 | 22920 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 22921 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
22922 | dwarf2_locexpr_baton->data has lifetime of |
22923 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
22924 | |
22925 | struct dwarf2_locexpr_baton | |
9c541725 | 22926 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
22927 | struct dwarf2_per_cu_data *per_cu, |
22928 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 22929 | void *baton, bool resolve_abstract_p) |
5c631832 | 22930 | { |
918dd910 | 22931 | struct dwarf2_cu *cu; |
5c631832 JK |
22932 | struct die_info *die; |
22933 | struct attribute *attr; | |
22934 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22935 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22936 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22937 | |
918dd910 | 22938 | if (per_cu->cu == NULL) |
58f0c718 | 22939 | load_cu (per_cu, false); |
918dd910 | 22940 | cu = per_cu->cu; |
cc12ce38 DE |
22941 | if (cu == NULL) |
22942 | { | |
22943 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22944 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22945 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22946 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22947 | } |
918dd910 | 22948 | |
9c541725 | 22949 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22950 | if (!die) |
9d8780f0 SM |
22951 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22952 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22953 | |
22954 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22955 | if (!attr && resolve_abstract_p |
3360b6e7 | 22956 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
22957 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
22958 | { | |
22959 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22960 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 22961 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 22962 | |
3360b6e7 TV |
22963 | for (const auto &cand_off |
22964 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 22965 | { |
3360b6e7 TV |
22966 | struct dwarf2_cu *cand_cu = cu; |
22967 | struct die_info *cand | |
22968 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22969 | if (!cand | |
22970 | || !cand->parent | |
e4a62c65 TV |
22971 | || cand->parent->tag != DW_TAG_subprogram) |
22972 | continue; | |
22973 | ||
22974 | CORE_ADDR pc_low, pc_high; | |
22975 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22976 | if (pc_low == ((CORE_ADDR) -1)) |
22977 | continue; | |
22978 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22979 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22980 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22981 | continue; |
22982 | ||
22983 | die = cand; | |
22984 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22985 | break; | |
22986 | } | |
22987 | } | |
22988 | ||
5c631832 JK |
22989 | if (!attr) |
22990 | { | |
e103e986 JK |
22991 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22992 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22993 | |
e103e986 | 22994 | retval.data = NULL; |
5c631832 JK |
22995 | retval.size = 0; |
22996 | } | |
cd6c91b4 | 22997 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22998 | { |
22999 | struct dwarf2_loclist_baton loclist_baton; | |
23000 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23001 | size_t size; | |
23002 | ||
23003 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23004 | ||
23005 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23006 | &size, pc); | |
23007 | retval.size = size; | |
23008 | } | |
5c631832 JK |
23009 | else |
23010 | { | |
4fc6c0d5 | 23011 | if (!attr->form_is_block ()) |
9d8780f0 | 23012 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23013 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23014 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23015 | |
23016 | retval.data = DW_BLOCK (attr)->data; | |
23017 | retval.size = DW_BLOCK (attr)->size; | |
23018 | } | |
23019 | retval.per_cu = cu->per_cu; | |
918dd910 | 23020 | |
ed2dc618 | 23021 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23022 | |
5c631832 | 23023 | return retval; |
348e048f DE |
23024 | } |
23025 | ||
8b9737bf TT |
23026 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23027 | offset. */ | |
23028 | ||
23029 | struct dwarf2_locexpr_baton | |
23030 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23031 | struct dwarf2_per_cu_data *per_cu, | |
23032 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23033 | void *baton) | |
23034 | { | |
9c541725 | 23035 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23036 | |
9c541725 | 23037 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23038 | } |
23039 | ||
b6807d98 TT |
23040 | /* Write a constant of a given type as target-ordered bytes into |
23041 | OBSTACK. */ | |
23042 | ||
23043 | static const gdb_byte * | |
23044 | write_constant_as_bytes (struct obstack *obstack, | |
23045 | enum bfd_endian byte_order, | |
23046 | struct type *type, | |
23047 | ULONGEST value, | |
23048 | LONGEST *len) | |
23049 | { | |
23050 | gdb_byte *result; | |
23051 | ||
23052 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23053 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23054 | store_unsigned_integer (result, *len, byte_order, value); |
23055 | ||
23056 | return result; | |
23057 | } | |
23058 | ||
23059 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23060 | pointer to the constant bytes and set LEN to the length of the | |
23061 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23062 | does not have a DW_AT_const_value, return NULL. */ | |
23063 | ||
23064 | const gdb_byte * | |
9c541725 | 23065 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23066 | struct dwarf2_per_cu_data *per_cu, |
23067 | struct obstack *obstack, | |
23068 | LONGEST *len) | |
23069 | { | |
23070 | struct dwarf2_cu *cu; | |
23071 | struct die_info *die; | |
23072 | struct attribute *attr; | |
23073 | const gdb_byte *result = NULL; | |
23074 | struct type *type; | |
23075 | LONGEST value; | |
23076 | enum bfd_endian byte_order; | |
e3b94546 | 23077 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23078 | |
b6807d98 | 23079 | if (per_cu->cu == NULL) |
58f0c718 | 23080 | load_cu (per_cu, false); |
b6807d98 | 23081 | cu = per_cu->cu; |
cc12ce38 DE |
23082 | if (cu == NULL) |
23083 | { | |
23084 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23085 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23086 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23087 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23088 | } |
b6807d98 | 23089 | |
9c541725 | 23090 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23091 | if (!die) |
9d8780f0 SM |
23092 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23093 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23094 | |
23095 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23096 | if (attr == NULL) | |
23097 | return NULL; | |
23098 | ||
e3b94546 | 23099 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23100 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23101 | ||
23102 | switch (attr->form) | |
23103 | { | |
23104 | case DW_FORM_addr: | |
336d760d | 23105 | case DW_FORM_addrx: |
b6807d98 TT |
23106 | case DW_FORM_GNU_addr_index: |
23107 | { | |
23108 | gdb_byte *tem; | |
23109 | ||
23110 | *len = cu->header.addr_size; | |
224c3ddb | 23111 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23112 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23113 | result = tem; | |
23114 | } | |
23115 | break; | |
23116 | case DW_FORM_string: | |
23117 | case DW_FORM_strp: | |
cf532bd1 | 23118 | case DW_FORM_strx: |
b6807d98 TT |
23119 | case DW_FORM_GNU_str_index: |
23120 | case DW_FORM_GNU_strp_alt: | |
23121 | /* DW_STRING is already allocated on the objfile obstack, point | |
23122 | directly to it. */ | |
23123 | result = (const gdb_byte *) DW_STRING (attr); | |
23124 | *len = strlen (DW_STRING (attr)); | |
23125 | break; | |
23126 | case DW_FORM_block1: | |
23127 | case DW_FORM_block2: | |
23128 | case DW_FORM_block4: | |
23129 | case DW_FORM_block: | |
23130 | case DW_FORM_exprloc: | |
0224619f | 23131 | case DW_FORM_data16: |
b6807d98 TT |
23132 | result = DW_BLOCK (attr)->data; |
23133 | *len = DW_BLOCK (attr)->size; | |
23134 | break; | |
23135 | ||
23136 | /* The DW_AT_const_value attributes are supposed to carry the | |
23137 | symbol's value "represented as it would be on the target | |
23138 | architecture." By the time we get here, it's already been | |
23139 | converted to host endianness, so we just need to sign- or | |
23140 | zero-extend it as appropriate. */ | |
23141 | case DW_FORM_data1: | |
23142 | type = die_type (die, cu); | |
23143 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23144 | if (result == NULL) | |
23145 | result = write_constant_as_bytes (obstack, byte_order, | |
23146 | type, value, len); | |
23147 | break; | |
23148 | case DW_FORM_data2: | |
23149 | type = die_type (die, cu); | |
23150 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23151 | if (result == NULL) | |
23152 | result = write_constant_as_bytes (obstack, byte_order, | |
23153 | type, value, len); | |
23154 | break; | |
23155 | case DW_FORM_data4: | |
23156 | type = die_type (die, cu); | |
23157 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23158 | if (result == NULL) | |
23159 | result = write_constant_as_bytes (obstack, byte_order, | |
23160 | type, value, len); | |
23161 | break; | |
23162 | case DW_FORM_data8: | |
23163 | type = die_type (die, cu); | |
23164 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23165 | if (result == NULL) | |
23166 | result = write_constant_as_bytes (obstack, byte_order, | |
23167 | type, value, len); | |
23168 | break; | |
23169 | ||
23170 | case DW_FORM_sdata: | |
663c44ac | 23171 | case DW_FORM_implicit_const: |
b6807d98 TT |
23172 | type = die_type (die, cu); |
23173 | result = write_constant_as_bytes (obstack, byte_order, | |
23174 | type, DW_SND (attr), len); | |
23175 | break; | |
23176 | ||
23177 | case DW_FORM_udata: | |
23178 | type = die_type (die, cu); | |
23179 | result = write_constant_as_bytes (obstack, byte_order, | |
23180 | type, DW_UNSND (attr), len); | |
23181 | break; | |
23182 | ||
23183 | default: | |
b98664d3 | 23184 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23185 | dwarf_form_name (attr->form)); |
23186 | break; | |
23187 | } | |
23188 | ||
23189 | return result; | |
23190 | } | |
23191 | ||
7942e96e AA |
23192 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23193 | valid type for this die is found. */ | |
23194 | ||
23195 | struct type * | |
9c541725 | 23196 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23197 | struct dwarf2_per_cu_data *per_cu) |
23198 | { | |
23199 | struct dwarf2_cu *cu; | |
23200 | struct die_info *die; | |
23201 | ||
7942e96e | 23202 | if (per_cu->cu == NULL) |
58f0c718 | 23203 | load_cu (per_cu, false); |
7942e96e AA |
23204 | cu = per_cu->cu; |
23205 | if (!cu) | |
23206 | return NULL; | |
23207 | ||
9c541725 | 23208 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23209 | if (!die) |
23210 | return NULL; | |
23211 | ||
23212 | return die_type (die, cu); | |
23213 | } | |
23214 | ||
8a9b8146 TT |
23215 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23216 | PER_CU. */ | |
23217 | ||
23218 | struct type * | |
b64f50a1 | 23219 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23220 | struct dwarf2_per_cu_data *per_cu) |
23221 | { | |
9c541725 | 23222 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23223 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23224 | } |
23225 | ||
ac9ec31b | 23226 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23227 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23228 | On exit *REF_CU is the CU of the result. |
23229 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23230 | |
23231 | static struct die_info * | |
ac9ec31b DE |
23232 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23233 | struct dwarf2_cu **ref_cu) | |
348e048f | 23234 | { |
348e048f | 23235 | struct die_info temp_die; |
c24bdb02 | 23236 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
23237 | struct die_info *die; |
23238 | ||
ac9ec31b DE |
23239 | /* While it might be nice to assert sig_type->type == NULL here, |
23240 | we can get here for DW_AT_imported_declaration where we need | |
23241 | the DIE not the type. */ | |
348e048f DE |
23242 | |
23243 | /* If necessary, add it to the queue and load its DIEs. */ | |
23244 | ||
95554aad | 23245 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23246 | read_signatured_type (sig_type); |
348e048f | 23247 | |
348e048f | 23248 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23249 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23250 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23251 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23252 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23253 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23254 | if (die) |
23255 | { | |
ed2dc618 | 23256 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23257 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23258 | |
796a7ff8 DE |
23259 | /* For .gdb_index version 7 keep track of included TUs. |
23260 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23261 | if (dwarf2_per_objfile->index_table != NULL | |
23262 | && dwarf2_per_objfile->index_table->version <= 7) | |
23263 | { | |
ae640021 | 23264 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23265 | } |
23266 | ||
348e048f | 23267 | *ref_cu = sig_cu; |
c24bdb02 KS |
23268 | if (sig_cu != cu) |
23269 | sig_cu->ancestor = cu; | |
23270 | ||
348e048f DE |
23271 | return die; |
23272 | } | |
23273 | ||
ac9ec31b DE |
23274 | return NULL; |
23275 | } | |
23276 | ||
23277 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23278 | On entry *REF_CU is the CU of SRC_DIE. | |
23279 | On exit *REF_CU is the CU of the result. | |
23280 | The result is the DIE of the type. | |
23281 | If the referenced type cannot be found an error is thrown. */ | |
23282 | ||
23283 | static struct die_info * | |
ff39bb5e | 23284 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23285 | struct dwarf2_cu **ref_cu) |
23286 | { | |
23287 | ULONGEST signature = DW_SIGNATURE (attr); | |
23288 | struct signatured_type *sig_type; | |
23289 | struct die_info *die; | |
23290 | ||
23291 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23292 | ||
a2ce51a0 | 23293 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23294 | /* sig_type will be NULL if the signatured type is missing from |
23295 | the debug info. */ | |
23296 | if (sig_type == NULL) | |
23297 | { | |
23298 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23299 | " from DIE at %s [in module %s]"), |
23300 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23301 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23302 | } |
23303 | ||
23304 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23305 | if (die == NULL) | |
23306 | { | |
23307 | dump_die_for_error (src_die); | |
23308 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23309 | " from DIE at %s [in module %s]"), |
23310 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23311 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23312 | } |
23313 | ||
23314 | return die; | |
23315 | } | |
23316 | ||
23317 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23318 | reading in and processing the type unit if necessary. */ | |
23319 | ||
23320 | static struct type * | |
23321 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23322 | struct dwarf2_cu *cu) | |
23323 | { | |
518817b3 SM |
23324 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23325 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23326 | struct signatured_type *sig_type; |
23327 | struct dwarf2_cu *type_cu; | |
23328 | struct die_info *type_die; | |
23329 | struct type *type; | |
23330 | ||
a2ce51a0 | 23331 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23332 | /* sig_type will be NULL if the signatured type is missing from |
23333 | the debug info. */ | |
23334 | if (sig_type == NULL) | |
23335 | { | |
b98664d3 | 23336 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23337 | " from DIE at %s [in module %s]"), |
23338 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23339 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23340 | return build_error_marker_type (cu, die); |
23341 | } | |
23342 | ||
23343 | /* If we already know the type we're done. */ | |
23344 | if (sig_type->type != NULL) | |
23345 | return sig_type->type; | |
23346 | ||
23347 | type_cu = cu; | |
23348 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23349 | if (type_die != NULL) | |
23350 | { | |
23351 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23352 | is created. This is important, for example, because for c++ classes | |
23353 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23354 | type = read_type_die (type_die, type_cu); | |
23355 | if (type == NULL) | |
23356 | { | |
b98664d3 | 23357 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23358 | " referenced from DIE at %s [in module %s]"), |
23359 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23360 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23361 | type = build_error_marker_type (cu, die); |
23362 | } | |
23363 | } | |
23364 | else | |
23365 | { | |
b98664d3 | 23366 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23367 | " from DIE at %s [in module %s]"), |
23368 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23369 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23370 | type = build_error_marker_type (cu, die); |
23371 | } | |
23372 | sig_type->type = type; | |
23373 | ||
23374 | return type; | |
23375 | } | |
23376 | ||
23377 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23378 | reading in and processing the type unit if necessary. */ | |
23379 | ||
23380 | static struct type * | |
ff39bb5e | 23381 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23382 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23383 | { |
23384 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23385 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23386 | { |
23387 | struct dwarf2_cu *type_cu = cu; | |
23388 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23389 | ||
23390 | return read_type_die (type_die, type_cu); | |
23391 | } | |
23392 | else if (attr->form == DW_FORM_ref_sig8) | |
23393 | { | |
23394 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23395 | } | |
23396 | else | |
23397 | { | |
518817b3 SM |
23398 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23399 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23400 | |
b98664d3 | 23401 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23402 | " at %s [in module %s]"), |
23403 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23404 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23405 | return build_error_marker_type (cu, die); |
23406 | } | |
348e048f DE |
23407 | } |
23408 | ||
e5fe5e75 | 23409 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23410 | |
23411 | static void | |
e5fe5e75 | 23412 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23413 | { |
52dc124a | 23414 | struct signatured_type *sig_type; |
348e048f | 23415 | |
f4dc4d17 DE |
23416 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23417 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23418 | ||
6721b2ec DE |
23419 | /* We have the per_cu, but we need the signatured_type. |
23420 | Fortunately this is an easy translation. */ | |
23421 | gdb_assert (per_cu->is_debug_types); | |
23422 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23423 | |
6721b2ec | 23424 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23425 | |
52dc124a | 23426 | read_signatured_type (sig_type); |
348e048f | 23427 | |
6721b2ec | 23428 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23429 | } |
23430 | ||
3019eac3 DE |
23431 | /* Read in a signatured type and build its CU and DIEs. |
23432 | If the type is a stub for the real type in a DWO file, | |
23433 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23434 | |
23435 | static void | |
23436 | read_signatured_type (struct signatured_type *sig_type) | |
23437 | { | |
23438 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23439 | |
3019eac3 | 23440 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23441 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23442 | |
c0ab21c2 TT |
23443 | cutu_reader reader (per_cu, NULL, 0, 1, false); |
23444 | ||
23445 | if (!reader.dummy_p) | |
23446 | { | |
23447 | struct dwarf2_cu *cu = reader.cu; | |
23448 | const gdb_byte *info_ptr = reader.info_ptr; | |
23449 | ||
23450 | gdb_assert (cu->die_hash == NULL); | |
23451 | cu->die_hash = | |
23452 | htab_create_alloc_ex (cu->header.length / 12, | |
23453 | die_hash, | |
23454 | die_eq, | |
23455 | NULL, | |
23456 | &cu->comp_unit_obstack, | |
23457 | hashtab_obstack_allocate, | |
23458 | dummy_obstack_deallocate); | |
23459 | ||
3e225074 | 23460 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
23461 | reader.comp_unit_die->child |
23462 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23463 | reader.comp_unit_die); | |
23464 | cu->dies = reader.comp_unit_die; | |
23465 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23466 | ||
23467 | /* We try not to read any attributes in this function, because | |
23468 | not all CUs needed for references have been loaded yet, and | |
23469 | symbol table processing isn't initialized. But we have to | |
23470 | set the CU language, or we won't be able to build types | |
23471 | correctly. Similarly, if we do not read the producer, we can | |
23472 | not apply producer-specific interpretation. */ | |
23473 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
23474 | } | |
23475 | ||
7ee85ab1 | 23476 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23477 | } |
23478 | ||
c906108c SS |
23479 | /* Decode simple location descriptions. |
23480 | Given a pointer to a dwarf block that defines a location, compute | |
23481 | the location and return the value. | |
23482 | ||
4cecd739 DJ |
23483 | NOTE drow/2003-11-18: This function is called in two situations |
23484 | now: for the address of static or global variables (partial symbols | |
23485 | only) and for offsets into structures which are expected to be | |
23486 | (more or less) constant. The partial symbol case should go away, | |
23487 | and only the constant case should remain. That will let this | |
23488 | function complain more accurately. A few special modes are allowed | |
23489 | without complaint for global variables (for instance, global | |
23490 | register values and thread-local values). | |
c906108c SS |
23491 | |
23492 | A location description containing no operations indicates that the | |
4cecd739 | 23493 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23494 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23495 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23496 | complaint. |
23497 | ||
23498 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23499 | |
23500 | static CORE_ADDR | |
e7c27a73 | 23501 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23502 | { |
518817b3 | 23503 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23504 | size_t i; |
23505 | size_t size = blk->size; | |
d521ce57 | 23506 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23507 | CORE_ADDR stack[64]; |
23508 | int stacki; | |
23509 | unsigned int bytes_read, unsnd; | |
23510 | gdb_byte op; | |
c906108c | 23511 | |
21ae7a4d JK |
23512 | i = 0; |
23513 | stacki = 0; | |
23514 | stack[stacki] = 0; | |
23515 | stack[++stacki] = 0; | |
23516 | ||
23517 | while (i < size) | |
23518 | { | |
23519 | op = data[i++]; | |
23520 | switch (op) | |
23521 | { | |
23522 | case DW_OP_lit0: | |
23523 | case DW_OP_lit1: | |
23524 | case DW_OP_lit2: | |
23525 | case DW_OP_lit3: | |
23526 | case DW_OP_lit4: | |
23527 | case DW_OP_lit5: | |
23528 | case DW_OP_lit6: | |
23529 | case DW_OP_lit7: | |
23530 | case DW_OP_lit8: | |
23531 | case DW_OP_lit9: | |
23532 | case DW_OP_lit10: | |
23533 | case DW_OP_lit11: | |
23534 | case DW_OP_lit12: | |
23535 | case DW_OP_lit13: | |
23536 | case DW_OP_lit14: | |
23537 | case DW_OP_lit15: | |
23538 | case DW_OP_lit16: | |
23539 | case DW_OP_lit17: | |
23540 | case DW_OP_lit18: | |
23541 | case DW_OP_lit19: | |
23542 | case DW_OP_lit20: | |
23543 | case DW_OP_lit21: | |
23544 | case DW_OP_lit22: | |
23545 | case DW_OP_lit23: | |
23546 | case DW_OP_lit24: | |
23547 | case DW_OP_lit25: | |
23548 | case DW_OP_lit26: | |
23549 | case DW_OP_lit27: | |
23550 | case DW_OP_lit28: | |
23551 | case DW_OP_lit29: | |
23552 | case DW_OP_lit30: | |
23553 | case DW_OP_lit31: | |
23554 | stack[++stacki] = op - DW_OP_lit0; | |
23555 | break; | |
f1bea926 | 23556 | |
21ae7a4d JK |
23557 | case DW_OP_reg0: |
23558 | case DW_OP_reg1: | |
23559 | case DW_OP_reg2: | |
23560 | case DW_OP_reg3: | |
23561 | case DW_OP_reg4: | |
23562 | case DW_OP_reg5: | |
23563 | case DW_OP_reg6: | |
23564 | case DW_OP_reg7: | |
23565 | case DW_OP_reg8: | |
23566 | case DW_OP_reg9: | |
23567 | case DW_OP_reg10: | |
23568 | case DW_OP_reg11: | |
23569 | case DW_OP_reg12: | |
23570 | case DW_OP_reg13: | |
23571 | case DW_OP_reg14: | |
23572 | case DW_OP_reg15: | |
23573 | case DW_OP_reg16: | |
23574 | case DW_OP_reg17: | |
23575 | case DW_OP_reg18: | |
23576 | case DW_OP_reg19: | |
23577 | case DW_OP_reg20: | |
23578 | case DW_OP_reg21: | |
23579 | case DW_OP_reg22: | |
23580 | case DW_OP_reg23: | |
23581 | case DW_OP_reg24: | |
23582 | case DW_OP_reg25: | |
23583 | case DW_OP_reg26: | |
23584 | case DW_OP_reg27: | |
23585 | case DW_OP_reg28: | |
23586 | case DW_OP_reg29: | |
23587 | case DW_OP_reg30: | |
23588 | case DW_OP_reg31: | |
23589 | stack[++stacki] = op - DW_OP_reg0; | |
23590 | if (i < size) | |
23591 | dwarf2_complex_location_expr_complaint (); | |
23592 | break; | |
c906108c | 23593 | |
21ae7a4d JK |
23594 | case DW_OP_regx: |
23595 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23596 | i += bytes_read; | |
23597 | stack[++stacki] = unsnd; | |
23598 | if (i < size) | |
23599 | dwarf2_complex_location_expr_complaint (); | |
23600 | break; | |
c906108c | 23601 | |
21ae7a4d JK |
23602 | case DW_OP_addr: |
23603 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23604 | cu, &bytes_read); | |
23605 | i += bytes_read; | |
23606 | break; | |
d53d4ac5 | 23607 | |
21ae7a4d JK |
23608 | case DW_OP_const1u: |
23609 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23610 | i += 1; | |
23611 | break; | |
23612 | ||
23613 | case DW_OP_const1s: | |
23614 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23615 | i += 1; | |
23616 | break; | |
23617 | ||
23618 | case DW_OP_const2u: | |
23619 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23620 | i += 2; | |
23621 | break; | |
23622 | ||
23623 | case DW_OP_const2s: | |
23624 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23625 | i += 2; | |
23626 | break; | |
d53d4ac5 | 23627 | |
21ae7a4d JK |
23628 | case DW_OP_const4u: |
23629 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23630 | i += 4; | |
23631 | break; | |
23632 | ||
23633 | case DW_OP_const4s: | |
23634 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23635 | i += 4; | |
23636 | break; | |
23637 | ||
585861ea JK |
23638 | case DW_OP_const8u: |
23639 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23640 | i += 8; | |
23641 | break; | |
23642 | ||
21ae7a4d JK |
23643 | case DW_OP_constu: |
23644 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23645 | &bytes_read); | |
23646 | i += bytes_read; | |
23647 | break; | |
23648 | ||
23649 | case DW_OP_consts: | |
23650 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23651 | i += bytes_read; | |
23652 | break; | |
23653 | ||
23654 | case DW_OP_dup: | |
23655 | stack[stacki + 1] = stack[stacki]; | |
23656 | stacki++; | |
23657 | break; | |
23658 | ||
23659 | case DW_OP_plus: | |
23660 | stack[stacki - 1] += stack[stacki]; | |
23661 | stacki--; | |
23662 | break; | |
23663 | ||
23664 | case DW_OP_plus_uconst: | |
23665 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23666 | &bytes_read); | |
23667 | i += bytes_read; | |
23668 | break; | |
23669 | ||
23670 | case DW_OP_minus: | |
23671 | stack[stacki - 1] -= stack[stacki]; | |
23672 | stacki--; | |
23673 | break; | |
23674 | ||
23675 | case DW_OP_deref: | |
23676 | /* If we're not the last op, then we definitely can't encode | |
23677 | this using GDB's address_class enum. This is valid for partial | |
23678 | global symbols, although the variable's address will be bogus | |
23679 | in the psymtab. */ | |
23680 | if (i < size) | |
23681 | dwarf2_complex_location_expr_complaint (); | |
23682 | break; | |
23683 | ||
23684 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23685 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23686 | /* The top of the stack has the offset from the beginning |
23687 | of the thread control block at which the variable is located. */ | |
23688 | /* Nothing should follow this operator, so the top of stack would | |
23689 | be returned. */ | |
23690 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23691 | address will be bogus in the psymtab. Make it always at least |
23692 | non-zero to not look as a variable garbage collected by linker | |
23693 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23694 | if (i < size) |
23695 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23696 | stack[stacki]++; |
21ae7a4d JK |
23697 | break; |
23698 | ||
23699 | case DW_OP_GNU_uninit: | |
23700 | break; | |
23701 | ||
336d760d | 23702 | case DW_OP_addrx: |
3019eac3 | 23703 | case DW_OP_GNU_addr_index: |
49f6c839 | 23704 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23705 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23706 | &bytes_read); | |
23707 | i += bytes_read; | |
23708 | break; | |
23709 | ||
21ae7a4d JK |
23710 | default: |
23711 | { | |
f39c6ffd | 23712 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23713 | |
23714 | if (name) | |
b98664d3 | 23715 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23716 | name); |
23717 | else | |
b98664d3 | 23718 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23719 | op); |
23720 | } | |
23721 | ||
23722 | return (stack[stacki]); | |
d53d4ac5 | 23723 | } |
3c6e0cb3 | 23724 | |
21ae7a4d JK |
23725 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23726 | outside of the allocated space. Also enforce minimum>0. */ | |
23727 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23728 | { | |
b98664d3 | 23729 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23730 | return 0; |
23731 | } | |
23732 | ||
23733 | if (stacki <= 0) | |
23734 | { | |
b98664d3 | 23735 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23736 | return 0; |
23737 | } | |
23738 | } | |
23739 | return (stack[stacki]); | |
c906108c SS |
23740 | } |
23741 | ||
23742 | /* memory allocation interface */ | |
23743 | ||
c906108c | 23744 | static struct dwarf_block * |
7b5a2f43 | 23745 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23746 | { |
8d749320 | 23747 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23748 | } |
23749 | ||
c906108c | 23750 | static struct die_info * |
b60c80d6 | 23751 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23752 | { |
23753 | struct die_info *die; | |
b60c80d6 DJ |
23754 | size_t size = sizeof (struct die_info); |
23755 | ||
23756 | if (num_attrs > 1) | |
23757 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23758 | |
b60c80d6 | 23759 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23760 | memset (die, 0, sizeof (struct die_info)); |
23761 | return (die); | |
23762 | } | |
2e276125 JB |
23763 | |
23764 | \f | |
23765 | /* Macro support. */ | |
23766 | ||
233d95b5 JK |
23767 | /* Return file name relative to the compilation directory of file number I in |
23768 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23769 | responsible for freeing it. */ |
233d95b5 | 23770 | |
2e276125 | 23771 | static char * |
233d95b5 | 23772 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23773 | { |
6a83a1e6 EZ |
23774 | /* Is the file number a valid index into the line header's file name |
23775 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 23776 | if (lh->is_valid_file_index (file)) |
6a83a1e6 | 23777 | { |
7ba99d21 | 23778 | const file_entry *fe = lh->file_name_at (file); |
6e70227d | 23779 | |
7ba99d21 | 23780 | if (!IS_ABSOLUTE_PATH (fe->name)) |
8c43009f | 23781 | { |
7ba99d21 | 23782 | const char *dir = fe->include_dir (lh); |
8c43009f | 23783 | if (dir != NULL) |
7ba99d21 | 23784 | return concat (dir, SLASH_STRING, fe->name, (char *) NULL); |
8c43009f | 23785 | } |
7ba99d21 | 23786 | return xstrdup (fe->name); |
6a83a1e6 | 23787 | } |
2e276125 JB |
23788 | else |
23789 | { | |
6a83a1e6 EZ |
23790 | /* The compiler produced a bogus file number. We can at least |
23791 | record the macro definitions made in the file, even if we | |
23792 | won't be able to find the file by name. */ | |
23793 | char fake_name[80]; | |
9a619af0 | 23794 | |
8c042590 PM |
23795 | xsnprintf (fake_name, sizeof (fake_name), |
23796 | "<bad macro file number %d>", file); | |
2e276125 | 23797 | |
b98664d3 | 23798 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 23799 | file); |
2e276125 | 23800 | |
6a83a1e6 | 23801 | return xstrdup (fake_name); |
2e276125 JB |
23802 | } |
23803 | } | |
23804 | ||
233d95b5 JK |
23805 | /* Return the full name of file number I in *LH's file name table. |
23806 | Use COMP_DIR as the name of the current directory of the | |
23807 | compilation. The result is allocated using xmalloc; the caller is | |
23808 | responsible for freeing it. */ | |
23809 | static char * | |
23810 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23811 | { | |
23812 | /* Is the file number a valid index into the line header's file name | |
23813 | table? Remember that file numbers start with one, not zero. */ | |
7ba99d21 | 23814 | if (lh->is_valid_file_index (file)) |
233d95b5 JK |
23815 | { |
23816 | char *relative = file_file_name (file, lh); | |
23817 | ||
23818 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23819 | return relative; | |
b36cec19 PA |
23820 | return reconcat (relative, comp_dir, SLASH_STRING, |
23821 | relative, (char *) NULL); | |
233d95b5 JK |
23822 | } |
23823 | else | |
23824 | return file_file_name (file, lh); | |
23825 | } | |
23826 | ||
2e276125 JB |
23827 | |
23828 | static struct macro_source_file * | |
804d2729 TT |
23829 | macro_start_file (struct dwarf2_cu *cu, |
23830 | int file, int line, | |
2e276125 | 23831 | struct macro_source_file *current_file, |
43f3e411 | 23832 | struct line_header *lh) |
2e276125 | 23833 | { |
233d95b5 JK |
23834 | /* File name relative to the compilation directory of this source file. */ |
23835 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23836 | |
2e276125 | 23837 | if (! current_file) |
abc9d0dc | 23838 | { |
fc474241 DE |
23839 | /* Note: We don't create a macro table for this compilation unit |
23840 | at all until we actually get a filename. */ | |
c24bdb02 | 23841 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 23842 | |
abc9d0dc TT |
23843 | /* If we have no current file, then this must be the start_file |
23844 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23845 | current_file = macro_set_main (macro_table, file_name); |
23846 | macro_define_special (macro_table); | |
abc9d0dc | 23847 | } |
2e276125 | 23848 | else |
233d95b5 | 23849 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23850 | |
233d95b5 | 23851 | xfree (file_name); |
6e70227d | 23852 | |
2e276125 JB |
23853 | return current_file; |
23854 | } | |
23855 | ||
2e276125 JB |
23856 | static const char * |
23857 | consume_improper_spaces (const char *p, const char *body) | |
23858 | { | |
23859 | if (*p == ' ') | |
23860 | { | |
b98664d3 | 23861 | complaint (_("macro definition contains spaces " |
3e43a32a | 23862 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23863 | body); |
2e276125 JB |
23864 | |
23865 | while (*p == ' ') | |
23866 | p++; | |
23867 | } | |
23868 | ||
23869 | return p; | |
23870 | } | |
23871 | ||
23872 | ||
23873 | static void | |
23874 | parse_macro_definition (struct macro_source_file *file, int line, | |
23875 | const char *body) | |
23876 | { | |
23877 | const char *p; | |
23878 | ||
23879 | /* The body string takes one of two forms. For object-like macro | |
23880 | definitions, it should be: | |
23881 | ||
23882 | <macro name> " " <definition> | |
23883 | ||
23884 | For function-like macro definitions, it should be: | |
23885 | ||
23886 | <macro name> "() " <definition> | |
23887 | or | |
23888 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23889 | ||
23890 | Spaces may appear only where explicitly indicated, and in the | |
23891 | <definition>. | |
23892 | ||
23893 | The Dwarf 2 spec says that an object-like macro's name is always | |
23894 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23895 | the space when the macro's definition is the empty string. |
2e276125 JB |
23896 | |
23897 | The Dwarf 2 spec says that there should be no spaces between the | |
23898 | formal arguments in a function-like macro's formal argument list, | |
23899 | but versions of GCC around March 2002 include spaces after the | |
23900 | commas. */ | |
23901 | ||
23902 | ||
23903 | /* Find the extent of the macro name. The macro name is terminated | |
23904 | by either a space or null character (for an object-like macro) or | |
23905 | an opening paren (for a function-like macro). */ | |
23906 | for (p = body; *p; p++) | |
23907 | if (*p == ' ' || *p == '(') | |
23908 | break; | |
23909 | ||
23910 | if (*p == ' ' || *p == '\0') | |
23911 | { | |
23912 | /* It's an object-like macro. */ | |
23913 | int name_len = p - body; | |
456e800a | 23914 | std::string name (body, name_len); |
2e276125 JB |
23915 | const char *replacement; |
23916 | ||
23917 | if (*p == ' ') | |
23918 | replacement = body + name_len + 1; | |
23919 | else | |
23920 | { | |
4d3c2250 | 23921 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23922 | replacement = body + name_len; |
23923 | } | |
6e70227d | 23924 | |
456e800a | 23925 | macro_define_object (file, line, name.c_str (), replacement); |
2e276125 JB |
23926 | } |
23927 | else if (*p == '(') | |
23928 | { | |
23929 | /* It's a function-like macro. */ | |
456e800a | 23930 | std::string name (body, p - body); |
2e276125 JB |
23931 | int argc = 0; |
23932 | int argv_size = 1; | |
8d749320 | 23933 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23934 | |
23935 | p++; | |
23936 | ||
23937 | p = consume_improper_spaces (p, body); | |
23938 | ||
23939 | /* Parse the formal argument list. */ | |
23940 | while (*p && *p != ')') | |
23941 | { | |
23942 | /* Find the extent of the current argument name. */ | |
23943 | const char *arg_start = p; | |
23944 | ||
23945 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23946 | p++; | |
23947 | ||
23948 | if (! *p || p == arg_start) | |
4d3c2250 | 23949 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23950 | else |
23951 | { | |
23952 | /* Make sure argv has room for the new argument. */ | |
23953 | if (argc >= argv_size) | |
23954 | { | |
23955 | argv_size *= 2; | |
224c3ddb | 23956 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
23957 | } |
23958 | ||
3f8a7804 | 23959 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
23960 | } |
23961 | ||
23962 | p = consume_improper_spaces (p, body); | |
23963 | ||
23964 | /* Consume the comma, if present. */ | |
23965 | if (*p == ',') | |
23966 | { | |
23967 | p++; | |
23968 | ||
23969 | p = consume_improper_spaces (p, body); | |
23970 | } | |
23971 | } | |
23972 | ||
23973 | if (*p == ')') | |
23974 | { | |
23975 | p++; | |
23976 | ||
23977 | if (*p == ' ') | |
23978 | /* Perfectly formed definition, no complaints. */ | |
456e800a | 23979 | macro_define_function (file, line, name.c_str (), |
6e70227d | 23980 | argc, (const char **) argv, |
2e276125 JB |
23981 | p + 1); |
23982 | else if (*p == '\0') | |
23983 | { | |
23984 | /* Complain, but do define it. */ | |
4d3c2250 | 23985 | dwarf2_macro_malformed_definition_complaint (body); |
456e800a | 23986 | macro_define_function (file, line, name.c_str (), |
6e70227d | 23987 | argc, (const char **) argv, |
2e276125 JB |
23988 | p); |
23989 | } | |
23990 | else | |
23991 | /* Just complain. */ | |
4d3c2250 | 23992 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23993 | } |
23994 | else | |
23995 | /* Just complain. */ | |
4d3c2250 | 23996 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 23997 | |
2e276125 JB |
23998 | { |
23999 | int i; | |
24000 | ||
24001 | for (i = 0; i < argc; i++) | |
24002 | xfree (argv[i]); | |
24003 | } | |
24004 | xfree (argv); | |
24005 | } | |
24006 | else | |
4d3c2250 | 24007 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24008 | } |
24009 | ||
cf2c3c16 TT |
24010 | /* Skip some bytes from BYTES according to the form given in FORM. |
24011 | Returns the new pointer. */ | |
2e276125 | 24012 | |
d521ce57 TT |
24013 | static const gdb_byte * |
24014 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24015 | enum dwarf_form form, |
24016 | unsigned int offset_size, | |
24017 | struct dwarf2_section_info *section) | |
2e276125 | 24018 | { |
cf2c3c16 | 24019 | unsigned int bytes_read; |
2e276125 | 24020 | |
cf2c3c16 | 24021 | switch (form) |
2e276125 | 24022 | { |
cf2c3c16 TT |
24023 | case DW_FORM_data1: |
24024 | case DW_FORM_flag: | |
24025 | ++bytes; | |
24026 | break; | |
24027 | ||
24028 | case DW_FORM_data2: | |
24029 | bytes += 2; | |
24030 | break; | |
24031 | ||
24032 | case DW_FORM_data4: | |
24033 | bytes += 4; | |
24034 | break; | |
24035 | ||
24036 | case DW_FORM_data8: | |
24037 | bytes += 8; | |
24038 | break; | |
24039 | ||
0224619f JK |
24040 | case DW_FORM_data16: |
24041 | bytes += 16; | |
24042 | break; | |
24043 | ||
cf2c3c16 TT |
24044 | case DW_FORM_string: |
24045 | read_direct_string (abfd, bytes, &bytes_read); | |
24046 | bytes += bytes_read; | |
24047 | break; | |
24048 | ||
24049 | case DW_FORM_sec_offset: | |
24050 | case DW_FORM_strp: | |
36586728 | 24051 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24052 | bytes += offset_size; |
24053 | break; | |
24054 | ||
24055 | case DW_FORM_block: | |
24056 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24057 | bytes += bytes_read; | |
24058 | break; | |
24059 | ||
24060 | case DW_FORM_block1: | |
24061 | bytes += 1 + read_1_byte (abfd, bytes); | |
24062 | break; | |
24063 | case DW_FORM_block2: | |
24064 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24065 | break; | |
24066 | case DW_FORM_block4: | |
24067 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24068 | break; | |
24069 | ||
336d760d | 24070 | case DW_FORM_addrx: |
cf2c3c16 | 24071 | case DW_FORM_sdata: |
cf532bd1 | 24072 | case DW_FORM_strx: |
cf2c3c16 | 24073 | case DW_FORM_udata: |
3019eac3 DE |
24074 | case DW_FORM_GNU_addr_index: |
24075 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24076 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24077 | if (bytes == NULL) |
24078 | { | |
24079 | dwarf2_section_buffer_overflow_complaint (section); | |
24080 | return NULL; | |
24081 | } | |
cf2c3c16 TT |
24082 | break; |
24083 | ||
663c44ac JK |
24084 | case DW_FORM_implicit_const: |
24085 | break; | |
24086 | ||
cf2c3c16 TT |
24087 | default: |
24088 | { | |
b98664d3 | 24089 | complaint (_("invalid form 0x%x in `%s'"), |
96b79293 | 24090 | form, section->get_name ()); |
cf2c3c16 TT |
24091 | return NULL; |
24092 | } | |
2e276125 JB |
24093 | } |
24094 | ||
cf2c3c16 TT |
24095 | return bytes; |
24096 | } | |
757a13d0 | 24097 | |
cf2c3c16 TT |
24098 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24099 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24100 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24101 | |
d521ce57 | 24102 | static const gdb_byte * |
cf2c3c16 | 24103 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24104 | const gdb_byte **opcode_definitions, |
24105 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24106 | bfd *abfd, |
24107 | unsigned int offset_size, | |
24108 | struct dwarf2_section_info *section) | |
24109 | { | |
24110 | unsigned int bytes_read, i; | |
24111 | unsigned long arg; | |
d521ce57 | 24112 | const gdb_byte *defn; |
2e276125 | 24113 | |
cf2c3c16 | 24114 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24115 | { |
b98664d3 | 24116 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24117 | opcode); |
24118 | return NULL; | |
24119 | } | |
2e276125 | 24120 | |
cf2c3c16 TT |
24121 | defn = opcode_definitions[opcode]; |
24122 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24123 | defn += bytes_read; | |
2e276125 | 24124 | |
cf2c3c16 TT |
24125 | for (i = 0; i < arg; ++i) |
24126 | { | |
aead7601 SM |
24127 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24128 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24129 | section); |
cf2c3c16 TT |
24130 | if (mac_ptr == NULL) |
24131 | { | |
24132 | /* skip_form_bytes already issued the complaint. */ | |
24133 | return NULL; | |
24134 | } | |
24135 | } | |
757a13d0 | 24136 | |
cf2c3c16 TT |
24137 | return mac_ptr; |
24138 | } | |
757a13d0 | 24139 | |
cf2c3c16 TT |
24140 | /* A helper function which parses the header of a macro section. |
24141 | If the macro section is the extended (for now called "GNU") type, | |
24142 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24143 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24144 | |
d521ce57 TT |
24145 | static const gdb_byte * |
24146 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24147 | bfd *abfd, |
d521ce57 | 24148 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24149 | unsigned int *offset_size, |
24150 | int section_is_gnu) | |
24151 | { | |
24152 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24153 | |
cf2c3c16 TT |
24154 | if (section_is_gnu) |
24155 | { | |
24156 | unsigned int version, flags; | |
757a13d0 | 24157 | |
cf2c3c16 | 24158 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24159 | if (version != 4 && version != 5) |
cf2c3c16 | 24160 | { |
b98664d3 | 24161 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24162 | version); |
24163 | return NULL; | |
24164 | } | |
24165 | mac_ptr += 2; | |
757a13d0 | 24166 | |
cf2c3c16 TT |
24167 | flags = read_1_byte (abfd, mac_ptr); |
24168 | ++mac_ptr; | |
24169 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24170 | |
cf2c3c16 TT |
24171 | if ((flags & 2) != 0) |
24172 | /* We don't need the line table offset. */ | |
24173 | mac_ptr += *offset_size; | |
757a13d0 | 24174 | |
cf2c3c16 TT |
24175 | /* Vendor opcode descriptions. */ |
24176 | if ((flags & 4) != 0) | |
24177 | { | |
24178 | unsigned int i, count; | |
757a13d0 | 24179 | |
cf2c3c16 TT |
24180 | count = read_1_byte (abfd, mac_ptr); |
24181 | ++mac_ptr; | |
24182 | for (i = 0; i < count; ++i) | |
24183 | { | |
24184 | unsigned int opcode, bytes_read; | |
24185 | unsigned long arg; | |
24186 | ||
24187 | opcode = read_1_byte (abfd, mac_ptr); | |
24188 | ++mac_ptr; | |
24189 | opcode_definitions[opcode] = mac_ptr; | |
24190 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24191 | mac_ptr += bytes_read; | |
24192 | mac_ptr += arg; | |
24193 | } | |
757a13d0 | 24194 | } |
cf2c3c16 | 24195 | } |
757a13d0 | 24196 | |
cf2c3c16 TT |
24197 | return mac_ptr; |
24198 | } | |
757a13d0 | 24199 | |
cf2c3c16 | 24200 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24201 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24202 | |
24203 | static void | |
804d2729 | 24204 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24205 | bfd *abfd, |
d521ce57 | 24206 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24207 | struct macro_source_file *current_file, |
43f3e411 | 24208 | struct line_header *lh, |
cf2c3c16 | 24209 | struct dwarf2_section_info *section, |
36586728 | 24210 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24211 | unsigned int offset_size, |
8fc3fc34 | 24212 | htab_t include_hash) |
cf2c3c16 | 24213 | { |
804d2729 TT |
24214 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24215 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24216 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24217 | enum dwarf_macro_record_type macinfo_type; |
24218 | int at_commandline; | |
d521ce57 | 24219 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24220 | |
cf2c3c16 TT |
24221 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24222 | &offset_size, section_is_gnu); | |
24223 | if (mac_ptr == NULL) | |
24224 | { | |
24225 | /* We already issued a complaint. */ | |
24226 | return; | |
24227 | } | |
757a13d0 JK |
24228 | |
24229 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24230 | GDB is still reading the definitions from command line. First | |
24231 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24232 | to create CURRENT_FILE for the main source holding also the command line | |
24233 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24234 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24235 | ||
24236 | at_commandline = 1; | |
24237 | ||
24238 | do | |
24239 | { | |
24240 | /* Do we at least have room for a macinfo type byte? */ | |
24241 | if (mac_ptr >= mac_end) | |
24242 | { | |
f664829e | 24243 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24244 | break; |
24245 | } | |
24246 | ||
aead7601 | 24247 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24248 | mac_ptr++; |
24249 | ||
cf2c3c16 TT |
24250 | /* Note that we rely on the fact that the corresponding GNU and |
24251 | DWARF constants are the same. */ | |
132448f8 SM |
24252 | DIAGNOSTIC_PUSH |
24253 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24254 | switch (macinfo_type) |
24255 | { | |
24256 | /* A zero macinfo type indicates the end of the macro | |
24257 | information. */ | |
24258 | case 0: | |
24259 | break; | |
2e276125 | 24260 | |
0af92d60 JK |
24261 | case DW_MACRO_define: |
24262 | case DW_MACRO_undef: | |
24263 | case DW_MACRO_define_strp: | |
24264 | case DW_MACRO_undef_strp: | |
24265 | case DW_MACRO_define_sup: | |
24266 | case DW_MACRO_undef_sup: | |
2e276125 | 24267 | { |
891d2f0b | 24268 | unsigned int bytes_read; |
2e276125 | 24269 | int line; |
d521ce57 | 24270 | const char *body; |
cf2c3c16 | 24271 | int is_define; |
2e276125 | 24272 | |
cf2c3c16 TT |
24273 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24274 | mac_ptr += bytes_read; | |
24275 | ||
0af92d60 JK |
24276 | if (macinfo_type == DW_MACRO_define |
24277 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24278 | { |
24279 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24280 | mac_ptr += bytes_read; | |
24281 | } | |
24282 | else | |
24283 | { | |
24284 | LONGEST str_offset; | |
24285 | ||
24286 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24287 | mac_ptr += offset_size; | |
2e276125 | 24288 | |
0af92d60 JK |
24289 | if (macinfo_type == DW_MACRO_define_sup |
24290 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24291 | || section_is_dwz) |
36586728 | 24292 | { |
ed2dc618 SM |
24293 | struct dwz_file *dwz |
24294 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24295 | |
ed2dc618 SM |
24296 | body = read_indirect_string_from_dwz (objfile, |
24297 | dwz, str_offset); | |
36586728 TT |
24298 | } |
24299 | else | |
ed2dc618 SM |
24300 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24301 | abfd, str_offset); | |
cf2c3c16 TT |
24302 | } |
24303 | ||
0af92d60 JK |
24304 | is_define = (macinfo_type == DW_MACRO_define |
24305 | || macinfo_type == DW_MACRO_define_strp | |
24306 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24307 | if (! current_file) |
757a13d0 JK |
24308 | { |
24309 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24310 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24311 | "on line %d: %s"), |
cf2c3c16 TT |
24312 | is_define ? _("definition") : _("undefinition"), |
24313 | line, body); | |
757a13d0 JK |
24314 | break; |
24315 | } | |
3e43a32a MS |
24316 | if ((line == 0 && !at_commandline) |
24317 | || (line != 0 && at_commandline)) | |
b98664d3 | 24318 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24319 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24320 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24321 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24322 | ||
955b06fa | 24323 | if (body == NULL) |
7bede828 | 24324 | { |
955b06fa SDJ |
24325 | /* Fedora's rpm-build's "debugedit" binary |
24326 | corrupted .debug_macro sections. | |
24327 | ||
24328 | For more info, see | |
24329 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
24330 | complaint (_("debug info gives %s invalid macro %s " | |
24331 | "without body (corrupted?) at line %d " | |
24332 | "on file %s"), | |
24333 | at_commandline ? _("command-line") : _("in-file"), | |
24334 | is_define ? _("definition") : _("undefinition"), | |
24335 | line, current_file->filename); | |
7bede828 | 24336 | } |
955b06fa SDJ |
24337 | else if (is_define) |
24338 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
24339 | else |
24340 | { | |
0af92d60 JK |
24341 | gdb_assert (macinfo_type == DW_MACRO_undef |
24342 | || macinfo_type == DW_MACRO_undef_strp | |
24343 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24344 | macro_undef (current_file, line, body); |
24345 | } | |
2e276125 JB |
24346 | } |
24347 | break; | |
24348 | ||
0af92d60 | 24349 | case DW_MACRO_start_file: |
2e276125 | 24350 | { |
891d2f0b | 24351 | unsigned int bytes_read; |
2e276125 JB |
24352 | int line, file; |
24353 | ||
24354 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24355 | mac_ptr += bytes_read; | |
24356 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24357 | mac_ptr += bytes_read; | |
24358 | ||
3e43a32a MS |
24359 | if ((line == 0 && !at_commandline) |
24360 | || (line != 0 && at_commandline)) | |
b98664d3 | 24361 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24362 | "from %s at %s line %d"), |
24363 | file, at_commandline ? _("command-line") : _("file"), | |
24364 | line == 0 ? _("zero") : _("non-zero"), line); | |
24365 | ||
24366 | if (at_commandline) | |
24367 | { | |
0af92d60 | 24368 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24369 | pass one. */ |
757a13d0 JK |
24370 | at_commandline = 0; |
24371 | } | |
24372 | else | |
804d2729 TT |
24373 | current_file = macro_start_file (cu, file, line, current_file, |
24374 | lh); | |
2e276125 JB |
24375 | } |
24376 | break; | |
24377 | ||
0af92d60 | 24378 | case DW_MACRO_end_file: |
2e276125 | 24379 | if (! current_file) |
b98664d3 | 24380 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24381 | "`close_file' directive")); |
2e276125 JB |
24382 | else |
24383 | { | |
24384 | current_file = current_file->included_by; | |
24385 | if (! current_file) | |
24386 | { | |
cf2c3c16 | 24387 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24388 | |
24389 | /* GCC circa March 2002 doesn't produce the zero | |
24390 | type byte marking the end of the compilation | |
24391 | unit. Complain if it's not there, but exit no | |
24392 | matter what. */ | |
24393 | ||
24394 | /* Do we at least have room for a macinfo type byte? */ | |
24395 | if (mac_ptr >= mac_end) | |
24396 | { | |
f664829e | 24397 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24398 | return; |
24399 | } | |
24400 | ||
24401 | /* We don't increment mac_ptr here, so this is just | |
24402 | a look-ahead. */ | |
aead7601 SM |
24403 | next_type |
24404 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24405 | mac_ptr); | |
2e276125 | 24406 | if (next_type != 0) |
b98664d3 | 24407 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24408 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24409 | |
24410 | return; | |
24411 | } | |
24412 | } | |
24413 | break; | |
24414 | ||
0af92d60 JK |
24415 | case DW_MACRO_import: |
24416 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24417 | { |
24418 | LONGEST offset; | |
8fc3fc34 | 24419 | void **slot; |
a036ba48 TT |
24420 | bfd *include_bfd = abfd; |
24421 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24422 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24423 | int is_dwz = section_is_dwz; |
d521ce57 | 24424 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24425 | |
24426 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24427 | mac_ptr += offset_size; | |
24428 | ||
0af92d60 | 24429 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24430 | { |
ed2dc618 | 24431 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24432 | |
96b79293 | 24433 | dwz->macro.read (objfile); |
a036ba48 | 24434 | |
a036ba48 | 24435 | include_section = &dwz->macro; |
96b79293 | 24436 | include_bfd = include_section->get_bfd_owner (); |
a036ba48 TT |
24437 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24438 | is_dwz = 1; | |
24439 | } | |
24440 | ||
24441 | new_mac_ptr = include_section->buffer + offset; | |
24442 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24443 | ||
8fc3fc34 TT |
24444 | if (*slot != NULL) |
24445 | { | |
24446 | /* This has actually happened; see | |
24447 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24448 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24449 | ".debug_macro section")); |
24450 | } | |
24451 | else | |
24452 | { | |
d521ce57 | 24453 | *slot = (void *) new_mac_ptr; |
36586728 | 24454 | |
804d2729 | 24455 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24456 | include_mac_end, current_file, lh, |
36586728 | 24457 | section, section_is_gnu, is_dwz, |
4d663531 | 24458 | offset_size, include_hash); |
8fc3fc34 | 24459 | |
d521ce57 | 24460 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24461 | } |
cf2c3c16 TT |
24462 | } |
24463 | break; | |
24464 | ||
2e276125 | 24465 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24466 | if (!section_is_gnu) |
24467 | { | |
24468 | unsigned int bytes_read; | |
2e276125 | 24469 | |
ac298888 TT |
24470 | /* This reads the constant, but since we don't recognize |
24471 | any vendor extensions, we ignore it. */ | |
24472 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24473 | mac_ptr += bytes_read; |
24474 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24475 | mac_ptr += bytes_read; | |
2e276125 | 24476 | |
cf2c3c16 TT |
24477 | /* We don't recognize any vendor extensions. */ |
24478 | break; | |
24479 | } | |
24480 | /* FALLTHROUGH */ | |
24481 | ||
24482 | default: | |
24483 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24484 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24485 | section); |
24486 | if (mac_ptr == NULL) | |
24487 | return; | |
24488 | break; | |
2e276125 | 24489 | } |
132448f8 | 24490 | DIAGNOSTIC_POP |
757a13d0 | 24491 | } while (macinfo_type != 0); |
2e276125 | 24492 | } |
8e19ed76 | 24493 | |
cf2c3c16 | 24494 | static void |
09262596 | 24495 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24496 | int section_is_gnu) |
cf2c3c16 | 24497 | { |
518817b3 SM |
24498 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24499 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24500 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24501 | struct line_header *lh = cu->line_header; |
24502 | bfd *abfd; | |
d521ce57 | 24503 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24504 | struct macro_source_file *current_file = 0; |
24505 | enum dwarf_macro_record_type macinfo_type; | |
24506 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24507 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24508 | void **slot; |
09262596 DE |
24509 | struct dwarf2_section_info *section; |
24510 | const char *section_name; | |
24511 | ||
24512 | if (cu->dwo_unit != NULL) | |
24513 | { | |
24514 | if (section_is_gnu) | |
24515 | { | |
24516 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24517 | section_name = ".debug_macro.dwo"; | |
24518 | } | |
24519 | else | |
24520 | { | |
24521 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24522 | section_name = ".debug_macinfo.dwo"; | |
24523 | } | |
24524 | } | |
24525 | else | |
24526 | { | |
24527 | if (section_is_gnu) | |
24528 | { | |
24529 | section = &dwarf2_per_objfile->macro; | |
24530 | section_name = ".debug_macro"; | |
24531 | } | |
24532 | else | |
24533 | { | |
24534 | section = &dwarf2_per_objfile->macinfo; | |
24535 | section_name = ".debug_macinfo"; | |
24536 | } | |
24537 | } | |
cf2c3c16 | 24538 | |
96b79293 | 24539 | section->read (objfile); |
cf2c3c16 TT |
24540 | if (section->buffer == NULL) |
24541 | { | |
b98664d3 | 24542 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24543 | return; |
24544 | } | |
96b79293 | 24545 | abfd = section->get_bfd_owner (); |
cf2c3c16 TT |
24546 | |
24547 | /* First pass: Find the name of the base filename. | |
24548 | This filename is needed in order to process all macros whose definition | |
24549 | (or undefinition) comes from the command line. These macros are defined | |
24550 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24551 | associated to the base file. | |
24552 | ||
24553 | To determine the base file name, we scan the macro definitions until we | |
24554 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24555 | CURRENT_FILE accordingly so that any macro definition found before the | |
24556 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24557 | ||
24558 | mac_ptr = section->buffer + offset; | |
24559 | mac_end = section->buffer + section->size; | |
24560 | ||
24561 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24562 | &offset_size, section_is_gnu); | |
24563 | if (mac_ptr == NULL) | |
24564 | { | |
24565 | /* We already issued a complaint. */ | |
24566 | return; | |
24567 | } | |
24568 | ||
24569 | do | |
24570 | { | |
24571 | /* Do we at least have room for a macinfo type byte? */ | |
24572 | if (mac_ptr >= mac_end) | |
24573 | { | |
24574 | /* Complaint is printed during the second pass as GDB will probably | |
24575 | stop the first pass earlier upon finding | |
24576 | DW_MACINFO_start_file. */ | |
24577 | break; | |
24578 | } | |
24579 | ||
aead7601 | 24580 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24581 | mac_ptr++; |
24582 | ||
24583 | /* Note that we rely on the fact that the corresponding GNU and | |
24584 | DWARF constants are the same. */ | |
132448f8 SM |
24585 | DIAGNOSTIC_PUSH |
24586 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24587 | switch (macinfo_type) |
24588 | { | |
24589 | /* A zero macinfo type indicates the end of the macro | |
24590 | information. */ | |
24591 | case 0: | |
24592 | break; | |
24593 | ||
0af92d60 JK |
24594 | case DW_MACRO_define: |
24595 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24596 | /* Only skip the data by MAC_PTR. */ |
24597 | { | |
24598 | unsigned int bytes_read; | |
24599 | ||
24600 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24601 | mac_ptr += bytes_read; | |
24602 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24603 | mac_ptr += bytes_read; | |
24604 | } | |
24605 | break; | |
24606 | ||
0af92d60 | 24607 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24608 | { |
24609 | unsigned int bytes_read; | |
24610 | int line, file; | |
24611 | ||
24612 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24613 | mac_ptr += bytes_read; | |
24614 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24615 | mac_ptr += bytes_read; | |
24616 | ||
804d2729 | 24617 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24618 | } |
24619 | break; | |
24620 | ||
0af92d60 | 24621 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24622 | /* No data to skip by MAC_PTR. */ |
24623 | break; | |
24624 | ||
0af92d60 JK |
24625 | case DW_MACRO_define_strp: |
24626 | case DW_MACRO_undef_strp: | |
24627 | case DW_MACRO_define_sup: | |
24628 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24629 | { |
24630 | unsigned int bytes_read; | |
24631 | ||
24632 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24633 | mac_ptr += bytes_read; | |
24634 | mac_ptr += offset_size; | |
24635 | } | |
24636 | break; | |
24637 | ||
0af92d60 JK |
24638 | case DW_MACRO_import: |
24639 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24640 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24641 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24642 | skip this opcode. */ |
24643 | mac_ptr += offset_size; | |
24644 | break; | |
24645 | ||
24646 | case DW_MACINFO_vendor_ext: | |
24647 | /* Only skip the data by MAC_PTR. */ | |
24648 | if (!section_is_gnu) | |
24649 | { | |
24650 | unsigned int bytes_read; | |
24651 | ||
24652 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24653 | mac_ptr += bytes_read; | |
24654 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24655 | mac_ptr += bytes_read; | |
24656 | } | |
24657 | /* FALLTHROUGH */ | |
24658 | ||
24659 | default: | |
24660 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24661 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24662 | section); |
24663 | if (mac_ptr == NULL) | |
24664 | return; | |
24665 | break; | |
24666 | } | |
132448f8 | 24667 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24668 | } while (macinfo_type != 0 && current_file == NULL); |
24669 | ||
24670 | /* Second pass: Process all entries. | |
24671 | ||
24672 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24673 | command-line macro definitions/undefinitions. This flag is unset when we | |
24674 | reach the first DW_MACINFO_start_file entry. */ | |
24675 | ||
fc4007c9 TT |
24676 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24677 | htab_eq_pointer, | |
24678 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24679 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24680 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24681 | *slot = (void *) mac_ptr; |
804d2729 | 24682 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 24683 | current_file, lh, section, |
fc4007c9 TT |
24684 | section_is_gnu, 0, offset_size, |
24685 | include_hash.get ()); | |
cf2c3c16 TT |
24686 | } |
24687 | ||
3019eac3 DE |
24688 | /* Return the .debug_loc section to use for CU. |
24689 | For DWO files use .debug_loc.dwo. */ | |
24690 | ||
24691 | static struct dwarf2_section_info * | |
24692 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24693 | { | |
518817b3 SM |
24694 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24695 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24696 | |
3019eac3 | 24697 | if (cu->dwo_unit) |
43988095 JK |
24698 | { |
24699 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24700 | |
43988095 JK |
24701 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24702 | } | |
24703 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24704 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24705 | } |
24706 | ||
8cf6f0b1 TT |
24707 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24708 | ||
24709 | static void | |
24710 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24711 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24712 | const struct attribute *attr) |
8cf6f0b1 | 24713 | { |
518817b3 SM |
24714 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24715 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24716 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24717 | ||
96b79293 | 24718 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
24719 | |
24720 | baton->per_cu = cu->per_cu; | |
24721 | gdb_assert (baton->per_cu); | |
24722 | /* We don't know how long the location list is, but make sure we | |
24723 | don't run off the edge of the section. */ | |
3019eac3 DE |
24724 | baton->size = section->size - DW_UNSND (attr); |
24725 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24726 | baton->base_address = cu->base_address; |
f664829e | 24727 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24728 | } |
24729 | ||
4c2df51b | 24730 | static void |
ff39bb5e | 24731 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24732 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24733 | { |
518817b3 SM |
24734 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24735 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24736 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24737 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24738 | |
cd6c91b4 | 24739 | if (attr->form_is_section_offset () |
3019eac3 | 24740 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24741 | the section. If so, fall through to the complaint in the |
24742 | other branch. */ | |
3019eac3 | 24743 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24744 | { |
0d53c4c4 | 24745 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24746 | |
8d749320 | 24747 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24748 | |
8cf6f0b1 | 24749 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24750 | |
d00adf39 | 24751 | if (cu->base_known == 0) |
b98664d3 | 24752 | complaint (_("Location list used without " |
3e43a32a | 24753 | "specifying the CU base address.")); |
4c2df51b | 24754 | |
f1e6e072 TT |
24755 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24756 | ? dwarf2_loclist_block_index | |
24757 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24758 | SYMBOL_LOCATION_BATON (sym) = baton; |
24759 | } | |
24760 | else | |
24761 | { | |
24762 | struct dwarf2_locexpr_baton *baton; | |
24763 | ||
8d749320 | 24764 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24765 | baton->per_cu = cu->per_cu; |
24766 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24767 | |
4fc6c0d5 | 24768 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24769 | { |
24770 | /* Note that we're just copying the block's data pointer | |
24771 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24772 | info_buffer for SYM's objfile; right now we never release |
24773 | that buffer, but when we do clean up properly this may | |
24774 | need to change. */ | |
0d53c4c4 DJ |
24775 | baton->size = DW_BLOCK (attr)->size; |
24776 | baton->data = DW_BLOCK (attr)->data; | |
24777 | } | |
24778 | else | |
24779 | { | |
24780 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24781 | sym->natural_name ()); |
0d53c4c4 | 24782 | baton->size = 0; |
0d53c4c4 | 24783 | } |
6e70227d | 24784 | |
f1e6e072 TT |
24785 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24786 | ? dwarf2_locexpr_block_index | |
24787 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24788 | SYMBOL_LOCATION_BATON (sym) = baton; |
24789 | } | |
4c2df51b | 24790 | } |
6502dd73 | 24791 | |
9aa1f1e3 TT |
24792 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24793 | came from a separate debuginfo file, then the master objfile is | |
24794 | returned. */ | |
ae0d2f24 UW |
24795 | |
24796 | struct objfile * | |
24797 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24798 | { | |
e3b94546 | 24799 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24800 | |
24801 | /* Return the master objfile, so that we can report and look up the | |
24802 | correct file containing this variable. */ | |
24803 | if (objfile->separate_debug_objfile_backlink) | |
24804 | objfile = objfile->separate_debug_objfile_backlink; | |
24805 | ||
24806 | return objfile; | |
24807 | } | |
24808 | ||
96408a79 SA |
24809 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24810 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24811 | CU_HEADERP first. */ | |
24812 | ||
24813 | static const struct comp_unit_head * | |
24814 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24815 | struct dwarf2_per_cu_data *per_cu) | |
24816 | { | |
d521ce57 | 24817 | const gdb_byte *info_ptr; |
96408a79 SA |
24818 | |
24819 | if (per_cu->cu) | |
24820 | return &per_cu->cu->header; | |
24821 | ||
9c541725 | 24822 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24823 | |
24824 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24825 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24826 | rcuh_kind::COMPILE); | |
96408a79 SA |
24827 | |
24828 | return cu_headerp; | |
24829 | } | |
24830 | ||
ae0d2f24 UW |
24831 | /* Return the address size given in the compilation unit header for CU. */ |
24832 | ||
98714339 | 24833 | int |
ae0d2f24 UW |
24834 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
24835 | { | |
96408a79 SA |
24836 | struct comp_unit_head cu_header_local; |
24837 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24838 | |
96408a79 SA |
24839 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24840 | ||
24841 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24842 | } |
24843 | ||
9eae7c52 TT |
24844 | /* Return the offset size given in the compilation unit header for CU. */ |
24845 | ||
24846 | int | |
24847 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
24848 | { | |
96408a79 SA |
24849 | struct comp_unit_head cu_header_local; |
24850 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24851 | |
96408a79 SA |
24852 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24853 | ||
24854 | return cu_headerp->offset_size; | |
24855 | } | |
24856 | ||
24857 | /* See its dwarf2loc.h declaration. */ | |
24858 | ||
24859 | int | |
24860 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
24861 | { | |
24862 | struct comp_unit_head cu_header_local; | |
24863 | const struct comp_unit_head *cu_headerp; | |
24864 | ||
24865 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
24866 | ||
24867 | if (cu_headerp->version == 2) | |
24868 | return cu_headerp->addr_size; | |
24869 | else | |
24870 | return cu_headerp->offset_size; | |
181cebd4 JK |
24871 | } |
24872 | ||
9aa1f1e3 TT |
24873 | /* Return the text offset of the CU. The returned offset comes from |
24874 | this CU's objfile. If this objfile came from a separate debuginfo | |
24875 | file, then the offset may be different from the corresponding | |
24876 | offset in the parent objfile. */ | |
24877 | ||
24878 | CORE_ADDR | |
24879 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
24880 | { | |
b3b3bada | 24881 | return per_cu->dwarf2_per_objfile->objfile->text_section_offset (); |
9aa1f1e3 TT |
24882 | } |
24883 | ||
9a49df9d AB |
24884 | /* Return a type that is a generic pointer type, the size of which matches |
24885 | the address size given in the compilation unit header for PER_CU. */ | |
24886 | static struct type * | |
24887 | dwarf2_per_cu_addr_type (struct dwarf2_per_cu_data *per_cu) | |
24888 | { | |
24889 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; | |
24890 | struct type *void_type = objfile_type (objfile)->builtin_void; | |
24891 | struct type *addr_type = lookup_pointer_type (void_type); | |
24892 | int addr_size = dwarf2_per_cu_addr_size (per_cu); | |
24893 | ||
24894 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24895 | return addr_type; | |
24896 | ||
24897 | addr_type | |
24898 | = dwarf2_per_cu_addr_sized_int_type (per_cu, TYPE_UNSIGNED (addr_type)); | |
24899 | return addr_type; | |
24900 | } | |
24901 | ||
43988095 JK |
24902 | /* Return DWARF version number of PER_CU. */ |
24903 | ||
24904 | short | |
24905 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
24906 | { | |
24907 | return per_cu->dwarf_version; | |
24908 | } | |
24909 | ||
348e048f DE |
24910 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
24911 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
24912 | |
24913 | static struct dwarf2_per_cu_data * | |
9c541725 | 24914 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 24915 | unsigned int offset_in_dwz, |
ed2dc618 | 24916 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
24917 | { |
24918 | struct dwarf2_per_cu_data *this_cu; | |
24919 | int low, high; | |
24920 | ||
ae038cb0 | 24921 | low = 0; |
b76e467d | 24922 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
24923 | while (high > low) |
24924 | { | |
36586728 | 24925 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24926 | int mid = low + (high - low) / 2; |
9a619af0 | 24927 | |
36586728 | 24928 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 24929 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24930 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 24931 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
24932 | high = mid; |
24933 | else | |
24934 | low = mid + 1; | |
24935 | } | |
24936 | gdb_assert (low == high); | |
36586728 | 24937 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 24938 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24939 | { |
36586728 | 24940 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24941 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24942 | "offset %s [in module %s]"), |
24943 | sect_offset_str (sect_off), | |
ed2dc618 | 24944 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 24945 | |
9c541725 PA |
24946 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
24947 | <= sect_off); | |
ae038cb0 DJ |
24948 | return dwarf2_per_objfile->all_comp_units[low-1]; |
24949 | } | |
24950 | else | |
24951 | { | |
b76e467d | 24952 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 24953 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24954 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24955 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24956 | return this_cu; |
24957 | } | |
24958 | } | |
24959 | ||
23745b47 | 24960 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 24961 | |
fcd3b13d SM |
24962 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
24963 | : per_cu (per_cu_), | |
9068261f AB |
24964 | mark (false), |
24965 | has_loclist (false), | |
24966 | checked_producer (false), | |
24967 | producer_is_gxx_lt_4_6 (false), | |
24968 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24969 | producer_is_icc (false), |
9068261f | 24970 | producer_is_icc_lt_14 (false), |
c258c396 | 24971 | producer_is_codewarrior (false), |
9068261f | 24972 | processing_has_namespace_info (false) |
93311388 | 24973 | { |
fcd3b13d SM |
24974 | per_cu->cu = this; |
24975 | } | |
24976 | ||
24977 | /* Destroy a dwarf2_cu. */ | |
24978 | ||
24979 | dwarf2_cu::~dwarf2_cu () | |
24980 | { | |
24981 | per_cu->cu = NULL; | |
9816fde3 JK |
24982 | } |
24983 | ||
24984 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24985 | ||
24986 | static void | |
95554aad TT |
24987 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24988 | enum language pretend_language) | |
9816fde3 JK |
24989 | { |
24990 | struct attribute *attr; | |
24991 | ||
24992 | /* Set the language we're debugging. */ | |
24993 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24994 | if (attr != nullptr) |
9816fde3 JK |
24995 | set_cu_language (DW_UNSND (attr), cu); |
24996 | else | |
9cded63f | 24997 | { |
95554aad | 24998 | cu->language = pretend_language; |
9cded63f TT |
24999 | cu->language_defn = language_def (cu->language); |
25000 | } | |
dee91e82 | 25001 | |
7d45c7c3 | 25002 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25003 | } |
25004 | ||
ae038cb0 DJ |
25005 | /* Increase the age counter on each cached compilation unit, and free |
25006 | any that are too old. */ | |
25007 | ||
25008 | static void | |
ed2dc618 | 25009 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25010 | { |
25011 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25012 | ||
25013 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25014 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25015 | while (per_cu != NULL) | |
25016 | { | |
25017 | per_cu->cu->last_used ++; | |
b4f54984 | 25018 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25019 | dwarf2_mark (per_cu->cu); |
25020 | per_cu = per_cu->cu->read_in_chain; | |
25021 | } | |
25022 | ||
25023 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25024 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25025 | while (per_cu != NULL) | |
25026 | { | |
25027 | struct dwarf2_per_cu_data *next_cu; | |
25028 | ||
25029 | next_cu = per_cu->cu->read_in_chain; | |
25030 | ||
25031 | if (!per_cu->cu->mark) | |
25032 | { | |
fcd3b13d | 25033 | delete per_cu->cu; |
ae038cb0 DJ |
25034 | *last_chain = next_cu; |
25035 | } | |
25036 | else | |
25037 | last_chain = &per_cu->cu->read_in_chain; | |
25038 | ||
25039 | per_cu = next_cu; | |
25040 | } | |
25041 | } | |
25042 | ||
25043 | /* Remove a single compilation unit from the cache. */ | |
25044 | ||
25045 | static void | |
dee91e82 | 25046 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25047 | { |
25048 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25049 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25050 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25051 | |
25052 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25053 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25054 | while (per_cu != NULL) | |
25055 | { | |
25056 | struct dwarf2_per_cu_data *next_cu; | |
25057 | ||
25058 | next_cu = per_cu->cu->read_in_chain; | |
25059 | ||
dee91e82 | 25060 | if (per_cu == target_per_cu) |
ae038cb0 | 25061 | { |
fcd3b13d | 25062 | delete per_cu->cu; |
dee91e82 | 25063 | per_cu->cu = NULL; |
ae038cb0 DJ |
25064 | *last_chain = next_cu; |
25065 | break; | |
25066 | } | |
25067 | else | |
25068 | last_chain = &per_cu->cu->read_in_chain; | |
25069 | ||
25070 | per_cu = next_cu; | |
25071 | } | |
25072 | } | |
25073 | ||
dee91e82 DE |
25074 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25075 | We store these in a hash table separate from the DIEs, and preserve them | |
25076 | when the DIEs are flushed out of cache. | |
25077 | ||
25078 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25079 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25080 | or the type may come from a DWO file. Furthermore, while it's more logical |
25081 | to use per_cu->section+offset, with Fission the section with the data is in | |
25082 | the DWO file but we don't know that section at the point we need it. | |
25083 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25084 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25085 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25086 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25087 | |
dee91e82 | 25088 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25089 | { |
dee91e82 | 25090 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25091 | sect_offset sect_off; |
1c379e20 DJ |
25092 | struct type *type; |
25093 | }; | |
25094 | ||
dee91e82 | 25095 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25096 | |
25097 | static hashval_t | |
dee91e82 | 25098 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25099 | { |
9a3c8263 SM |
25100 | const struct dwarf2_per_cu_offset_and_type *ofs |
25101 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25102 | |
9c541725 | 25103 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25104 | } |
25105 | ||
dee91e82 | 25106 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25107 | |
25108 | static int | |
dee91e82 | 25109 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25110 | { |
9a3c8263 SM |
25111 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25112 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25113 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25114 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25115 | |
dee91e82 | 25116 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25117 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25118 | } |
25119 | ||
25120 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25121 | table if necessary. For convenience, return TYPE. |
25122 | ||
25123 | The DIEs reading must have careful ordering to: | |
85102364 | 25124 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25125 | reading current DIE. |
25126 | * Not trying to dereference contents of still incompletely read in types | |
25127 | while reading in other DIEs. | |
25128 | * Enable referencing still incompletely read in types just by a pointer to | |
25129 | the type without accessing its fields. | |
25130 | ||
25131 | Therefore caller should follow these rules: | |
25132 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25133 | before building the type and calling set_die_type. | |
e71ec853 | 25134 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25135 | possible before fetching more types to complete the current type. |
25136 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25137 | |
f792889a | 25138 | static struct type * |
1c379e20 DJ |
25139 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25140 | { | |
518817b3 SM |
25141 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25142 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25143 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25144 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25145 | struct attribute *attr; |
25146 | struct dynamic_prop prop; | |
1c379e20 | 25147 | |
b4ba55a1 JB |
25148 | /* For Ada types, make sure that the gnat-specific data is always |
25149 | initialized (if not already set). There are a few types where | |
25150 | we should not be doing so, because the type-specific area is | |
25151 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25152 | where the type-specific area is used to store the floatformat). | |
25153 | But this is not a problem, because the gnat-specific information | |
25154 | is actually not needed for these types. */ | |
25155 | if (need_gnat_info (cu) | |
25156 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25157 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25158 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25159 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25160 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25161 | && !HAVE_GNAT_AUX_INFO (type)) |
25162 | INIT_GNAT_SPECIFIC (type); | |
25163 | ||
3f2f83dd KB |
25164 | /* Read DW_AT_allocated and set in type. */ |
25165 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 25166 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 25167 | { |
9a49df9d AB |
25168 | struct type *prop_type |
25169 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25170 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25171 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25172 | } |
25173 | else if (attr != NULL) | |
25174 | { | |
b98664d3 | 25175 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25176 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25177 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25178 | } |
25179 | ||
25180 | /* Read DW_AT_associated and set in type. */ | |
25181 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 25182 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 25183 | { |
9a49df9d AB |
25184 | struct type *prop_type |
25185 | = dwarf2_per_cu_addr_sized_int_type (cu->per_cu, false); | |
25186 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
50a82047 | 25187 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25188 | } |
25189 | else if (attr != NULL) | |
25190 | { | |
b98664d3 | 25191 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25192 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25193 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25194 | } |
25195 | ||
3cdcd0ce JB |
25196 | /* Read DW_AT_data_location and set in type. */ |
25197 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d AB |
25198 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
25199 | dwarf2_per_cu_addr_type (cu->per_cu))) | |
50a82047 | 25200 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25201 | |
dee91e82 | 25202 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25203 | { |
dee91e82 DE |
25204 | dwarf2_per_objfile->die_type_hash = |
25205 | htab_create_alloc_ex (127, | |
25206 | per_cu_offset_and_type_hash, | |
25207 | per_cu_offset_and_type_eq, | |
25208 | NULL, | |
25209 | &objfile->objfile_obstack, | |
25210 | hashtab_obstack_allocate, | |
25211 | dummy_obstack_deallocate); | |
f792889a | 25212 | } |
1c379e20 | 25213 | |
dee91e82 | 25214 | ofs.per_cu = cu->per_cu; |
9c541725 | 25215 | ofs.sect_off = die->sect_off; |
1c379e20 | 25216 | ofs.type = type; |
dee91e82 DE |
25217 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25218 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25219 | if (*slot) |
b98664d3 | 25220 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25221 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25222 | *slot = XOBNEW (&objfile->objfile_obstack, |
25223 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25224 | **slot = ofs; |
f792889a | 25225 | return type; |
1c379e20 DJ |
25226 | } |
25227 | ||
9c541725 | 25228 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25229 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25230 | |
25231 | static struct type * | |
9c541725 | 25232 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25233 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25234 | { |
dee91e82 | 25235 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25236 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25237 | |
dee91e82 | 25238 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25239 | return NULL; |
1c379e20 | 25240 | |
dee91e82 | 25241 | ofs.per_cu = per_cu; |
9c541725 | 25242 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25243 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25244 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25245 | if (slot) |
25246 | return slot->type; | |
25247 | else | |
25248 | return NULL; | |
25249 | } | |
25250 | ||
02142a6c | 25251 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25252 | or return NULL if DIE does not have a saved type. */ |
25253 | ||
25254 | static struct type * | |
25255 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25256 | { | |
9c541725 | 25257 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25258 | } |
25259 | ||
10b3939b DJ |
25260 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25261 | ||
25262 | static void | |
25263 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25264 | struct dwarf2_per_cu_data *ref_per_cu) | |
25265 | { | |
25266 | void **slot; | |
25267 | ||
25268 | if (cu->dependencies == NULL) | |
25269 | cu->dependencies | |
25270 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25271 | NULL, &cu->comp_unit_obstack, | |
25272 | hashtab_obstack_allocate, | |
25273 | dummy_obstack_deallocate); | |
25274 | ||
25275 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25276 | if (*slot == NULL) | |
25277 | *slot = ref_per_cu; | |
25278 | } | |
1c379e20 | 25279 | |
f504f079 DE |
25280 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25281 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25282 | cache that we must keep because we are keeping CU. */ |
25283 | ||
10b3939b DJ |
25284 | static int |
25285 | dwarf2_mark_helper (void **slot, void *data) | |
25286 | { | |
25287 | struct dwarf2_per_cu_data *per_cu; | |
25288 | ||
25289 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25290 | |
25291 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25292 | reading of the chain. As such dependencies remain valid it is not much | |
25293 | useful to track and undo them during QUIT cleanups. */ | |
25294 | if (per_cu->cu == NULL) | |
25295 | return 1; | |
25296 | ||
10b3939b DJ |
25297 | if (per_cu->cu->mark) |
25298 | return 1; | |
9068261f | 25299 | per_cu->cu->mark = true; |
10b3939b DJ |
25300 | |
25301 | if (per_cu->cu->dependencies != NULL) | |
25302 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25303 | ||
25304 | return 1; | |
25305 | } | |
25306 | ||
f504f079 DE |
25307 | /* Set the mark field in CU and in every other compilation unit in the |
25308 | cache that we must keep because we are keeping CU. */ | |
25309 | ||
ae038cb0 DJ |
25310 | static void |
25311 | dwarf2_mark (struct dwarf2_cu *cu) | |
25312 | { | |
25313 | if (cu->mark) | |
25314 | return; | |
9068261f | 25315 | cu->mark = true; |
10b3939b DJ |
25316 | if (cu->dependencies != NULL) |
25317 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25318 | } |
25319 | ||
25320 | static void | |
25321 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25322 | { | |
25323 | while (per_cu) | |
25324 | { | |
9068261f | 25325 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25326 | per_cu = per_cu->cu->read_in_chain; |
25327 | } | |
72bf9492 DJ |
25328 | } |
25329 | ||
72bf9492 DJ |
25330 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25331 | is its offset in .debug_info for this objfile. */ | |
25332 | ||
25333 | static hashval_t | |
25334 | partial_die_hash (const void *item) | |
25335 | { | |
9a3c8263 SM |
25336 | const struct partial_die_info *part_die |
25337 | = (const struct partial_die_info *) item; | |
9a619af0 | 25338 | |
9c541725 | 25339 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25340 | } |
25341 | ||
25342 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25343 | are equal if they have the same offset. */ | |
25344 | ||
25345 | static int | |
25346 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25347 | { | |
9a3c8263 SM |
25348 | const struct partial_die_info *part_die_lhs |
25349 | = (const struct partial_die_info *) item_lhs; | |
25350 | const struct partial_die_info *part_die_rhs | |
25351 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25352 | |
9c541725 | 25353 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25354 | } |
25355 | ||
3c3bb058 AB |
25356 | struct cmd_list_element *set_dwarf_cmdlist; |
25357 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25358 | |
25359 | static void | |
981a3fb3 | 25360 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25361 | { |
b4f54984 | 25362 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25363 | gdb_stdout); |
ae038cb0 DJ |
25364 | } |
25365 | ||
25366 | static void | |
981a3fb3 | 25367 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25368 | { |
b4f54984 | 25369 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25370 | } |
25371 | ||
491144b5 | 25372 | bool dwarf_always_disassemble; |
437afbb8 | 25373 | |
437afbb8 | 25374 | static void |
cd4fb1b2 SM |
25375 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25376 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25377 | { |
cd4fb1b2 SM |
25378 | fprintf_filtered (file, |
25379 | _("Whether to always disassemble " | |
25380 | "DWARF expressions is %s.\n"), | |
25381 | value); | |
9291a0cd TT |
25382 | } |
25383 | ||
9291a0cd | 25384 | static void |
cd4fb1b2 SM |
25385 | show_check_physname (struct ui_file *file, int from_tty, |
25386 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25387 | { |
cd4fb1b2 SM |
25388 | fprintf_filtered (file, |
25389 | _("Whether to check \"physname\" is %s.\n"), | |
25390 | value); | |
9291a0cd TT |
25391 | } |
25392 | ||
6c265988 | 25393 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25394 | void |
6c265988 | 25395 | _initialize_dwarf2_read () |
9291a0cd | 25396 | { |
cd4fb1b2 SM |
25397 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25398 | Set DWARF specific variables.\n\ | |
590042fc | 25399 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
25400 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25401 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25402 | |
cd4fb1b2 | 25403 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
25404 | Show DWARF specific variables.\n\ |
25405 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
25406 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25407 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25408 | |
cd4fb1b2 SM |
25409 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25410 | &dwarf_max_cache_age, _("\ | |
25411 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25412 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25413 | A higher limit means that cached compilation units will be stored\n\ | |
25414 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25415 | caching, which can slow down startup."), | |
25416 | NULL, | |
25417 | show_dwarf_max_cache_age, | |
25418 | &set_dwarf_cmdlist, | |
25419 | &show_dwarf_cmdlist); | |
156942c7 | 25420 | |
cd4fb1b2 SM |
25421 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25422 | &dwarf_always_disassemble, _("\ | |
25423 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25424 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25425 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25426 | syntax. When disabled, expressions will be printed in a more\n\ | |
25427 | conversational style, when possible."), | |
25428 | NULL, | |
25429 | show_dwarf_always_disassemble, | |
25430 | &set_dwarf_cmdlist, | |
25431 | &show_dwarf_cmdlist); | |
9291a0cd | 25432 | |
cd4fb1b2 SM |
25433 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25434 | Set debugging of the DWARF reader."), _("\ | |
25435 | Show debugging of the DWARF reader."), _("\ | |
25436 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25437 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25438 | information. A value greater than 1 provides more verbose information."), | |
25439 | NULL, | |
25440 | NULL, | |
25441 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25442 | |
cd4fb1b2 SM |
25443 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25444 | Set debugging of the DWARF DIE reader."), _("\ | |
25445 | Show debugging of the DWARF DIE reader."), _("\ | |
25446 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25447 | The value is the maximum depth to print."), | |
25448 | NULL, | |
25449 | NULL, | |
25450 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25451 | |
cd4fb1b2 SM |
25452 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25453 | Set debugging of the dwarf line reader."), _("\ | |
25454 | Show debugging of the dwarf line reader."), _("\ | |
25455 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25456 | A value of 1 (one) provides basic information.\n\ | |
25457 | A value greater than 1 provides more verbose information."), | |
25458 | NULL, | |
25459 | NULL, | |
25460 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25461 | |
cd4fb1b2 SM |
25462 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25463 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25464 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25465 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25466 | the demangler."), | |
25467 | NULL, show_check_physname, | |
25468 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25469 | |
e615022a DE |
25470 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25471 | no_class, &use_deprecated_index_sections, _("\ | |
25472 | Set whether to use deprecated gdb_index sections."), _("\ | |
25473 | Show whether to use deprecated gdb_index sections."), _("\ | |
25474 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25475 | Normally they are ignored either because of a missing feature or\n\ | |
25476 | performance issue.\n\ | |
25477 | Warning: This option must be enabled before gdb reads the file."), | |
25478 | NULL, | |
25479 | NULL, | |
25480 | &setlist, &showlist); | |
25481 | ||
f1e6e072 TT |
25482 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25483 | &dwarf2_locexpr_funcs); | |
25484 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25485 | &dwarf2_loclist_funcs); | |
25486 | ||
25487 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25488 | &dwarf2_block_frame_base_locexpr_funcs); | |
25489 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25490 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25491 | |
25492 | #if GDB_SELF_TEST | |
25493 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25494 | selftests::dw2_expand_symtabs_matching::run_test); | |
25495 | #endif | |
6502dd73 | 25496 | } |