Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
4057dfde | 35 | #include "dwarf2/comp-unit.h" |
82ca8957 TT |
36 | #include "dwarf2/index-cache.h" |
37 | #include "dwarf2/index-common.h" | |
f4382c45 | 38 | #include "dwarf2/leb.h" |
8fdd972c | 39 | #include "dwarf2/line-header.h" |
9fda78b6 | 40 | #include "dwarf2/dwz.h" |
c90ec28a | 41 | #include "dwarf2/macro.h" |
c2d50fd0 | 42 | #include "dwarf2/die.h" |
2b2558bf | 43 | #include "dwarf2/stringify.h" |
4de283e4 TT |
44 | #include "bfd.h" |
45 | #include "elf-bfd.h" | |
46 | #include "symtab.h" | |
47 | #include "gdbtypes.h" | |
48 | #include "objfiles.h" | |
d55e5aa6 | 49 | #include "dwarf2.h" |
4de283e4 TT |
50 | #include "buildsym.h" |
51 | #include "demangle.h" | |
52 | #include "gdb-demangle.h" | |
4de283e4 | 53 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
54 | #include "language.h" |
55 | #include "complaints.h" | |
82ca8957 TT |
56 | #include "dwarf2/expr.h" |
57 | #include "dwarf2/loc.h" | |
4de283e4 TT |
58 | #include "cp-support.h" |
59 | #include "hashtab.h" | |
60 | #include "command.h" | |
d55e5aa6 | 61 | #include "gdbcmd.h" |
4de283e4 TT |
62 | #include "block.h" |
63 | #include "addrmap.h" | |
64 | #include "typeprint.h" | |
65 | #include "psympriv.h" | |
4de283e4 | 66 | #include "c-lang.h" |
d55e5aa6 | 67 | #include "go-lang.h" |
4de283e4 TT |
68 | #include "valprint.h" |
69 | #include "gdbcore.h" /* for gnutarget */ | |
70 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
71 | #include "gdb_bfd.h" |
72 | #include "f-lang.h" | |
73 | #include "source.h" | |
4de283e4 | 74 | #include "build-id.h" |
d55e5aa6 | 75 | #include "namespace.h" |
268a13a5 TT |
76 | #include "gdbsupport/function-view.h" |
77 | #include "gdbsupport/gdb_optional.h" | |
78 | #include "gdbsupport/underlying.h" | |
268a13a5 | 79 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
4de283e4 | 82 | #include <fcntl.h> |
4de283e4 | 83 | #include <algorithm> |
4de283e4 | 84 | #include <unordered_map> |
268a13a5 | 85 | #include "gdbsupport/selftest.h" |
c9317f21 | 86 | #include "rust-lang.h" |
268a13a5 | 87 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 88 | #include "count-one-bits.h" |
0d79cdc4 | 89 | #include "debuginfod-support.h" |
437afbb8 | 90 | |
73be47f5 DE |
91 | /* When == 1, print basic high level tracing messages. |
92 | When > 1, be more verbose. | |
b4f54984 DE |
93 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
94 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 95 | |
d97bc12b | 96 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 97 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 98 | |
27e0867f | 99 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 100 | unsigned int dwarf_line_debug = 0; |
27e0867f | 101 | |
491144b5 CB |
102 | /* When true, cross-check physname against demangler. */ |
103 | static bool check_physname = false; | |
900e11f9 | 104 | |
491144b5 CB |
105 | /* When true, do not reject deprecated .gdb_index sections. */ |
106 | static bool use_deprecated_index_sections = false; | |
481860b3 | 107 | |
5bfd760d | 108 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 109 | |
f1e6e072 TT |
110 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
111 | ||
112 | static int dwarf2_locexpr_index; | |
113 | static int dwarf2_loclist_index; | |
114 | static int dwarf2_locexpr_block_index; | |
115 | static int dwarf2_loclist_block_index; | |
116 | ||
41144253 | 117 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
118 | #define LOCLIST_HEADER_SIZE32 12 | |
119 | ||
120 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
121 | #define LOCLIST_HEADER_SIZE64 20 | |
122 | ||
3f563c84 PA |
123 | /* An index into a (C++) symbol name component in a symbol name as |
124 | recorded in the mapped_index's symbol table. For each C++ symbol | |
125 | in the symbol table, we record one entry for the start of each | |
126 | component in the symbol in a table of name components, and then | |
127 | sort the table, in order to be able to binary search symbol names, | |
128 | ignoring leading namespaces, both completion and regular look up. | |
129 | For example, for symbol "A::B::C", we'll have an entry that points | |
130 | to "A::B::C", another that points to "B::C", and another for "C". | |
131 | Note that function symbols in GDB index have no parameter | |
132 | information, just the function/method names. You can convert a | |
133 | name_component to a "const char *" using the | |
134 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
135 | ||
136 | struct name_component | |
137 | { | |
138 | /* Offset in the symbol name where the component starts. Stored as | |
139 | a (32-bit) offset instead of a pointer to save memory and improve | |
140 | locality on 64-bit architectures. */ | |
141 | offset_type name_offset; | |
142 | ||
143 | /* The symbol's index in the symbol and constant pool tables of a | |
144 | mapped_index. */ | |
145 | offset_type idx; | |
146 | }; | |
147 | ||
44ed8f3e PA |
148 | /* Base class containing bits shared by both .gdb_index and |
149 | .debug_name indexes. */ | |
150 | ||
151 | struct mapped_index_base | |
152 | { | |
22ca247e TT |
153 | mapped_index_base () = default; |
154 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
155 | ||
44ed8f3e PA |
156 | /* The name_component table (a sorted vector). See name_component's |
157 | description above. */ | |
158 | std::vector<name_component> name_components; | |
159 | ||
160 | /* How NAME_COMPONENTS is sorted. */ | |
161 | enum case_sensitivity name_components_casing; | |
162 | ||
163 | /* Return the number of names in the symbol table. */ | |
164 | virtual size_t symbol_name_count () const = 0; | |
165 | ||
166 | /* Get the name of the symbol at IDX in the symbol table. */ | |
167 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
168 | ||
169 | /* Return whether the name at IDX in the symbol table should be | |
170 | ignored. */ | |
171 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
172 | { | |
173 | return false; | |
174 | } | |
175 | ||
176 | /* Build the symbol name component sorted vector, if we haven't | |
177 | yet. */ | |
178 | void build_name_components (); | |
179 | ||
180 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
181 | possible matches for LN_NO_PARAMS in the name component | |
182 | vector. */ | |
183 | std::pair<std::vector<name_component>::const_iterator, | |
184 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
185 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
186 | enum language lang) const; | |
44ed8f3e PA |
187 | |
188 | /* Prevent deleting/destroying via a base class pointer. */ | |
189 | protected: | |
190 | ~mapped_index_base() = default; | |
191 | }; | |
192 | ||
9291a0cd TT |
193 | /* A description of the mapped index. The file format is described in |
194 | a comment by the code that writes the index. */ | |
fc898b42 | 195 | struct mapped_index final : public mapped_index_base |
9291a0cd | 196 | { |
f00a2de2 PA |
197 | /* A slot/bucket in the symbol table hash. */ |
198 | struct symbol_table_slot | |
199 | { | |
200 | const offset_type name; | |
201 | const offset_type vec; | |
202 | }; | |
203 | ||
559a7a62 | 204 | /* Index data format version. */ |
3063847f | 205 | int version = 0; |
559a7a62 | 206 | |
f00a2de2 PA |
207 | /* The address table data. */ |
208 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 209 | |
3876f04e | 210 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 211 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 212 | |
9291a0cd | 213 | /* A pointer to the constant pool. */ |
3063847f | 214 | const char *constant_pool = nullptr; |
3f563c84 | 215 | |
44ed8f3e PA |
216 | bool symbol_name_slot_invalid (offset_type idx) const override |
217 | { | |
218 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 219 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 220 | } |
5c58de74 | 221 | |
3f563c84 PA |
222 | /* Convenience method to get at the name of the symbol at IDX in the |
223 | symbol table. */ | |
44ed8f3e | 224 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 225 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 226 | |
44ed8f3e PA |
227 | size_t symbol_name_count () const override |
228 | { return this->symbol_table.size (); } | |
9291a0cd TT |
229 | }; |
230 | ||
927aa2e7 JK |
231 | /* A description of the mapped .debug_names. |
232 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 233 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 234 | { |
ed2dc618 SM |
235 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
236 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
237 | {} | |
238 | ||
239 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
240 | bfd_endian dwarf5_byte_order; |
241 | bool dwarf5_is_dwarf64; | |
242 | bool augmentation_is_gdb; | |
243 | uint8_t offset_size; | |
244 | uint32_t cu_count = 0; | |
245 | uint32_t tu_count, bucket_count, name_count; | |
246 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
247 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
248 | const gdb_byte *name_table_string_offs_reordered; | |
249 | const gdb_byte *name_table_entry_offs_reordered; | |
250 | const gdb_byte *entry_pool; | |
251 | ||
252 | struct index_val | |
253 | { | |
254 | ULONGEST dwarf_tag; | |
255 | struct attr | |
256 | { | |
257 | /* Attribute name DW_IDX_*. */ | |
258 | ULONGEST dw_idx; | |
259 | ||
260 | /* Attribute form DW_FORM_*. */ | |
261 | ULONGEST form; | |
262 | ||
263 | /* Value if FORM is DW_FORM_implicit_const. */ | |
264 | LONGEST implicit_const; | |
265 | }; | |
266 | std::vector<attr> attr_vec; | |
267 | }; | |
268 | ||
269 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
270 | ||
271 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
272 | |
273 | /* Implementation of the mapped_index_base virtual interface, for | |
274 | the name_components cache. */ | |
275 | ||
276 | const char *symbol_name_at (offset_type idx) const override | |
277 | { return namei_to_name (idx); } | |
278 | ||
279 | size_t symbol_name_count () const override | |
280 | { return this->name_count; } | |
927aa2e7 JK |
281 | }; |
282 | ||
cd4fb1b2 | 283 | /* See dwarf2read.h. */ |
ed2dc618 | 284 | |
cd4fb1b2 | 285 | dwarf2_per_objfile * |
ed2dc618 SM |
286 | get_dwarf2_per_objfile (struct objfile *objfile) |
287 | { | |
5bfd760d | 288 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 289 | } |
c906108c | 290 | |
251d32d9 | 291 | /* Default names of the debugging sections. */ |
c906108c | 292 | |
233a11ab CS |
293 | /* Note that if the debugging section has been compressed, it might |
294 | have a name like .zdebug_info. */ | |
295 | ||
9cdd5dbd DE |
296 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
297 | { | |
251d32d9 TG |
298 | { ".debug_info", ".zdebug_info" }, |
299 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
300 | { ".debug_line", ".zdebug_line" }, | |
301 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 302 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 303 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 304 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 305 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 306 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 307 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 308 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 309 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 310 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 311 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
312 | { ".debug_frame", ".zdebug_frame" }, |
313 | { ".eh_frame", NULL }, | |
24d3216f | 314 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
315 | { ".debug_names", ".zdebug_names" }, |
316 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 317 | 23 |
251d32d9 | 318 | }; |
c906108c | 319 | |
80626a55 | 320 | /* List of DWO/DWP sections. */ |
3019eac3 | 321 | |
80626a55 | 322 | static const struct dwop_section_names |
3019eac3 DE |
323 | { |
324 | struct dwarf2_section_names abbrev_dwo; | |
325 | struct dwarf2_section_names info_dwo; | |
326 | struct dwarf2_section_names line_dwo; | |
327 | struct dwarf2_section_names loc_dwo; | |
43988095 | 328 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
329 | struct dwarf2_section_names macinfo_dwo; |
330 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
331 | struct dwarf2_section_names str_dwo; |
332 | struct dwarf2_section_names str_offsets_dwo; | |
333 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
334 | struct dwarf2_section_names cu_index; |
335 | struct dwarf2_section_names tu_index; | |
3019eac3 | 336 | } |
80626a55 | 337 | dwop_section_names = |
3019eac3 DE |
338 | { |
339 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
340 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
341 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
342 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 343 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
344 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
345 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
346 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
347 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
348 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
349 | { ".debug_cu_index", ".zdebug_cu_index" }, |
350 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
351 | }; |
352 | ||
c906108c SS |
353 | /* local data types */ |
354 | ||
41144253 | 355 | /* The location list section (.debug_loclists) begins with a header, |
356 | which contains the following information. */ | |
357 | struct loclist_header | |
358 | { | |
359 | /* A 4-byte or 12-byte length containing the length of the | |
360 | set of entries for this compilation unit, not including the | |
361 | length field itself. */ | |
362 | unsigned int length; | |
363 | ||
364 | /* A 2-byte version identifier. */ | |
365 | short version; | |
366 | ||
367 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
368 | the target system. */ | |
369 | unsigned char addr_size; | |
370 | ||
371 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
372 | on the target system. */ | |
373 | unsigned char segment_collector_size; | |
374 | ||
375 | /* A 4-byte count of the number of offsets that follow the header. */ | |
376 | unsigned int offset_entry_count; | |
377 | }; | |
378 | ||
3da10d80 KS |
379 | /* Type used for delaying computation of method physnames. |
380 | See comments for compute_delayed_physnames. */ | |
381 | struct delayed_method_info | |
382 | { | |
383 | /* The type to which the method is attached, i.e., its parent class. */ | |
384 | struct type *type; | |
385 | ||
386 | /* The index of the method in the type's function fieldlists. */ | |
387 | int fnfield_index; | |
388 | ||
389 | /* The index of the method in the fieldlist. */ | |
390 | int index; | |
391 | ||
392 | /* The name of the DIE. */ | |
393 | const char *name; | |
394 | ||
395 | /* The DIE associated with this method. */ | |
396 | struct die_info *die; | |
397 | }; | |
398 | ||
e7c27a73 DJ |
399 | /* Internal state when decoding a particular compilation unit. */ |
400 | struct dwarf2_cu | |
401 | { | |
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. */ |
2b24b6e4 | 427 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 428 | |
e142c38c | 429 | /* The language we are debugging. */ |
fcd3b13d SM |
430 | enum language language = language_unknown; |
431 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 432 | |
fcd3b13d | 433 | const char *producer = nullptr; |
b0f35d58 | 434 | |
c24bdb02 | 435 | private: |
804d2729 TT |
436 | /* The symtab builder for this CU. This is only non-NULL when full |
437 | symbols are being read. */ | |
c24bdb02 | 438 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 439 | |
c24bdb02 | 440 | public: |
e142c38c DJ |
441 | /* The generic symbol table building routines have separate lists for |
442 | file scope symbols and all all other scopes (local scopes). So | |
443 | we need to select the right one to pass to add_symbol_to_list(). | |
444 | We do it by keeping a pointer to the correct list in list_in_scope. | |
445 | ||
446 | FIXME: The original dwarf code just treated the file scope as the | |
447 | first local scope, and all other local scopes as nested local | |
448 | scopes, and worked fine. Check to see if we really need to | |
449 | distinguish these in buildsym.c. */ | |
fcd3b13d | 450 | struct pending **list_in_scope = nullptr; |
e142c38c | 451 | |
b64f50a1 JK |
452 | /* Hash table holding all the loaded partial DIEs |
453 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 454 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
455 | |
456 | /* Storage for things with the same lifetime as this read-in compilation | |
457 | unit, including partial DIEs. */ | |
fcd3b13d | 458 | auto_obstack comp_unit_obstack; |
72bf9492 | 459 | |
ae038cb0 DJ |
460 | /* When multiple dwarf2_cu structures are living in memory, this field |
461 | chains them all together, so that they can be released efficiently. | |
462 | We will probably also want a generation counter so that most-recently-used | |
463 | compilation units are cached... */ | |
fcd3b13d | 464 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 465 | |
69d751e3 | 466 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
467 | struct dwarf2_per_cu_data *per_cu; |
468 | ||
469 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 470 | int last_used = 0; |
ae038cb0 | 471 | |
b64f50a1 JK |
472 | /* A hash table of DIE cu_offset for following references with |
473 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 474 | htab_t die_hash = nullptr; |
10b3939b DJ |
475 | |
476 | /* Full DIEs if read in. */ | |
fcd3b13d | 477 | struct die_info *dies = nullptr; |
10b3939b DJ |
478 | |
479 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
480 | units referenced by this one. Only set during full symbol processing; | |
481 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 482 | htab_t dependencies = nullptr; |
10b3939b | 483 | |
cb1df416 | 484 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 485 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
486 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
487 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
488 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
489 | to the line header as long as this DIE is being processed. See | |
490 | process_die_scope. */ | |
fcd3b13d | 491 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 492 | |
3da10d80 KS |
493 | /* A list of methods which need to have physnames computed |
494 | after all type information has been read. */ | |
c89b44cd | 495 | std::vector<delayed_method_info> method_list; |
3da10d80 | 496 | |
96408a79 | 497 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 498 | htab_t call_site_htab = nullptr; |
96408a79 | 499 | |
034e5797 DE |
500 | /* Non-NULL if this CU came from a DWO file. |
501 | There is an invariant here that is important to remember: | |
502 | Except for attributes copied from the top level DIE in the "main" | |
503 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 504 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
505 | Either there isn't a DWO file (in which case this is NULL and the point |
506 | is moot), or there is and either we're not going to read it (in which | |
507 | case this is NULL) or there is and we are reading it (in which case this | |
508 | is non-NULL). */ | |
fcd3b13d | 509 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 510 | |
18a8505e | 511 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 512 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 513 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 514 | |
18a8505e | 515 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 516 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 517 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
518 | be used without needing to know whether DWO files are in use or not. |
519 | N.B. This does not apply to DW_AT_ranges appearing in | |
520 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
521 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 522 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 523 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 524 | ULONGEST ranges_base = 0; |
2e3cf129 | 525 | |
41144253 | 526 | /* The DW_AT_loclists_base attribute if present. */ |
527 | ULONGEST loclist_base = 0; | |
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 | |
197400e8 | 610 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
611 | struct dwarf2_per_cu_data per_cu; |
612 | ||
0186c6a7 DE |
613 | /* The TUs that share this DW_AT_stmt_list entry. |
614 | This is added to while parsing type units to build partial symtabs, | |
615 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 616 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 617 | |
43f3e411 | 618 | /* The compunit symtab. |
094b34ac | 619 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
620 | so we create an essentially anonymous symtab as the compunit symtab. */ |
621 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 622 | |
094b34ac DE |
623 | /* The data used to construct the hash key. */ |
624 | struct stmt_list_hash hash; | |
f4dc4d17 | 625 | |
f4dc4d17 DE |
626 | /* The symbol tables for this TU (obtained from the files listed in |
627 | DW_AT_stmt_list). | |
628 | WARNING: The order of entries here must match the order of entries | |
629 | in the line header. After the first TU using this type_unit_group, the | |
630 | line header for the subsequent TUs is recreated from this. This is done | |
631 | because we need to use the same symtabs for each TU using the same | |
632 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
633 | there's no guarantee the line header doesn't have duplicate entries. */ | |
634 | struct symtab **symtabs; | |
635 | }; | |
636 | ||
73869dc2 | 637 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
638 | |
639 | struct dwo_sections | |
640 | { | |
641 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
642 | struct dwarf2_section_info line; |
643 | struct dwarf2_section_info loc; | |
43988095 | 644 | struct dwarf2_section_info loclists; |
09262596 DE |
645 | struct dwarf2_section_info macinfo; |
646 | struct dwarf2_section_info macro; | |
3019eac3 DE |
647 | struct dwarf2_section_info str; |
648 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
649 | /* In the case of a virtual DWO file, these two are unused. */ |
650 | struct dwarf2_section_info info; | |
fd5866f6 | 651 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
652 | }; |
653 | ||
c88ee1f0 | 654 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
655 | |
656 | struct dwo_unit | |
657 | { | |
658 | /* Backlink to the containing struct dwo_file. */ | |
659 | struct dwo_file *dwo_file; | |
660 | ||
661 | /* The "id" that distinguishes this CU/TU. | |
662 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
663 | Since signatures came first, we stick with it for consistency. */ | |
664 | ULONGEST signature; | |
665 | ||
666 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 667 | struct dwarf2_section_info *section; |
3019eac3 | 668 | |
9c541725 PA |
669 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
670 | sect_offset sect_off; | |
3019eac3 DE |
671 | unsigned int length; |
672 | ||
673 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
674 | cu_offset type_offset_in_tu; | |
675 | }; | |
676 | ||
73869dc2 DE |
677 | /* include/dwarf2.h defines the DWP section codes. |
678 | It defines a max value but it doesn't define a min value, which we | |
679 | use for error checking, so provide one. */ | |
680 | ||
681 | enum dwp_v2_section_ids | |
682 | { | |
683 | DW_SECT_MIN = 1 | |
684 | }; | |
685 | ||
80626a55 | 686 | /* Data for one DWO file. |
57d63ce2 DE |
687 | |
688 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
689 | appears in a DWP file). DWP files don't really have DWO files per se - | |
690 | comdat folding of types "loses" the DWO file they came from, and from | |
691 | a high level view DWP files appear to contain a mass of random types. | |
692 | However, to maintain consistency with the non-DWP case we pretend DWP | |
693 | files contain virtual DWO files, and we assign each TU with one virtual | |
694 | DWO file (generally based on the line and abbrev section offsets - | |
695 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
696 | |
697 | struct dwo_file | |
698 | { | |
51ac9db5 SM |
699 | dwo_file () = default; |
700 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
701 | ||
18a8505e | 702 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
703 | For virtual DWO files the name is constructed from the section offsets |
704 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
705 | from related CU+TUs. */ | |
51ac9db5 | 706 | const char *dwo_name = nullptr; |
0ac5b59e DE |
707 | |
708 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 709 | const char *comp_dir = nullptr; |
3019eac3 | 710 | |
80626a55 DE |
711 | /* The bfd, when the file is open. Otherwise this is NULL. |
712 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 713 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 714 | |
73869dc2 DE |
715 | /* The sections that make up this DWO file. |
716 | Remember that for virtual DWO files in DWP V2, these are virtual | |
717 | sections (for lack of a better name). */ | |
51ac9db5 | 718 | struct dwo_sections sections {}; |
3019eac3 | 719 | |
33c5cd75 DB |
720 | /* The CUs in the file. |
721 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
722 | an extension to handle LLVM's Link Time Optimization output (where | |
723 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 724 | htab_up cus; |
3019eac3 DE |
725 | |
726 | /* Table of TUs in the file. | |
727 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 728 | htab_up tus; |
3019eac3 DE |
729 | }; |
730 | ||
80626a55 DE |
731 | /* These sections are what may appear in a DWP file. */ |
732 | ||
733 | struct dwp_sections | |
734 | { | |
73869dc2 | 735 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
736 | struct dwarf2_section_info str; |
737 | struct dwarf2_section_info cu_index; | |
738 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
739 | |
740 | /* These are only used by DWP version 2 files. | |
741 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
742 | sections are referenced by section number, and are not recorded here. | |
743 | In DWP version 2 there is at most one copy of all these sections, each | |
744 | section being (effectively) comprised of the concatenation of all of the | |
745 | individual sections that exist in the version 1 format. | |
746 | To keep the code simple we treat each of these concatenated pieces as a | |
747 | section itself (a virtual section?). */ | |
748 | struct dwarf2_section_info abbrev; | |
749 | struct dwarf2_section_info info; | |
750 | struct dwarf2_section_info line; | |
751 | struct dwarf2_section_info loc; | |
752 | struct dwarf2_section_info macinfo; | |
753 | struct dwarf2_section_info macro; | |
754 | struct dwarf2_section_info str_offsets; | |
755 | struct dwarf2_section_info types; | |
80626a55 DE |
756 | }; |
757 | ||
73869dc2 DE |
758 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
759 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 760 | |
73869dc2 | 761 | struct virtual_v1_dwo_sections |
80626a55 DE |
762 | { |
763 | struct dwarf2_section_info abbrev; | |
764 | struct dwarf2_section_info line; | |
765 | struct dwarf2_section_info loc; | |
766 | struct dwarf2_section_info macinfo; | |
767 | struct dwarf2_section_info macro; | |
768 | struct dwarf2_section_info str_offsets; | |
769 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 770 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
771 | struct dwarf2_section_info info_or_types; |
772 | }; | |
773 | ||
73869dc2 DE |
774 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
775 | In version 2, the sections of the DWO files are concatenated together | |
776 | and stored in one section of that name. Thus each ELF section contains | |
777 | several "virtual" sections. */ | |
778 | ||
779 | struct virtual_v2_dwo_sections | |
780 | { | |
781 | bfd_size_type abbrev_offset; | |
782 | bfd_size_type abbrev_size; | |
783 | ||
784 | bfd_size_type line_offset; | |
785 | bfd_size_type line_size; | |
786 | ||
787 | bfd_size_type loc_offset; | |
788 | bfd_size_type loc_size; | |
789 | ||
790 | bfd_size_type macinfo_offset; | |
791 | bfd_size_type macinfo_size; | |
792 | ||
793 | bfd_size_type macro_offset; | |
794 | bfd_size_type macro_size; | |
795 | ||
796 | bfd_size_type str_offsets_offset; | |
797 | bfd_size_type str_offsets_size; | |
798 | ||
799 | /* Each DWP hash table entry records one CU or one TU. | |
800 | That is recorded here, and copied to dwo_unit.section. */ | |
801 | bfd_size_type info_or_types_offset; | |
802 | bfd_size_type info_or_types_size; | |
803 | }; | |
804 | ||
80626a55 DE |
805 | /* Contents of DWP hash tables. */ |
806 | ||
807 | struct dwp_hash_table | |
808 | { | |
73869dc2 | 809 | uint32_t version, nr_columns; |
80626a55 | 810 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
811 | const gdb_byte *hash_table, *unit_table; |
812 | union | |
813 | { | |
814 | struct | |
815 | { | |
816 | const gdb_byte *indices; | |
817 | } v1; | |
818 | struct | |
819 | { | |
820 | /* This is indexed by column number and gives the id of the section | |
821 | in that column. */ | |
822 | #define MAX_NR_V2_DWO_SECTIONS \ | |
823 | (1 /* .debug_info or .debug_types */ \ | |
824 | + 1 /* .debug_abbrev */ \ | |
825 | + 1 /* .debug_line */ \ | |
826 | + 1 /* .debug_loc */ \ | |
827 | + 1 /* .debug_str_offsets */ \ | |
828 | + 1 /* .debug_macro or .debug_macinfo */) | |
829 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
830 | const gdb_byte *offsets; | |
831 | const gdb_byte *sizes; | |
832 | } v2; | |
833 | } section_pool; | |
80626a55 DE |
834 | }; |
835 | ||
836 | /* Data for one DWP file. */ | |
837 | ||
838 | struct dwp_file | |
839 | { | |
400174b1 TT |
840 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
841 | : name (name_), | |
842 | dbfd (std::move (abfd)) | |
843 | { | |
844 | } | |
845 | ||
80626a55 DE |
846 | /* Name of the file. */ |
847 | const char *name; | |
848 | ||
73869dc2 | 849 | /* File format version. */ |
400174b1 | 850 | int version = 0; |
73869dc2 | 851 | |
93417882 | 852 | /* The bfd. */ |
400174b1 | 853 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
854 | |
855 | /* Section info for this file. */ | |
400174b1 | 856 | struct dwp_sections sections {}; |
80626a55 | 857 | |
57d63ce2 | 858 | /* Table of CUs in the file. */ |
400174b1 | 859 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
860 | |
861 | /* Table of TUs in the file. */ | |
400174b1 | 862 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 863 | |
19ac8c2e | 864 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
865 | htab_up loaded_cus; |
866 | htab_up loaded_tus; | |
80626a55 | 867 | |
73869dc2 DE |
868 | /* Table to map ELF section numbers to their sections. |
869 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
870 | unsigned int num_sections = 0; |
871 | asection **elf_sections = nullptr; | |
80626a55 DE |
872 | }; |
873 | ||
0963b4bd MS |
874 | /* Struct used to pass misc. parameters to read_die_and_children, et |
875 | al. which are used for both .debug_info and .debug_types dies. | |
876 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 877 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
878 | |
879 | struct die_reader_specs | |
880 | { | |
a32a8923 | 881 | /* The bfd of die_section. */ |
93311388 DE |
882 | bfd* abfd; |
883 | ||
884 | /* The CU of the DIE we are parsing. */ | |
885 | struct dwarf2_cu *cu; | |
886 | ||
80626a55 | 887 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
888 | struct dwo_file *dwo_file; |
889 | ||
dee91e82 | 890 | /* The section the die comes from. |
3019eac3 | 891 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
892 | struct dwarf2_section_info *die_section; |
893 | ||
894 | /* die_section->buffer. */ | |
d521ce57 | 895 | const gdb_byte *buffer; |
f664829e DE |
896 | |
897 | /* The end of the buffer. */ | |
898 | const gdb_byte *buffer_end; | |
a2ce51a0 | 899 | |
685af9cd TT |
900 | /* The abbreviation table to use when reading the DIEs. */ |
901 | struct abbrev_table *abbrev_table; | |
93311388 DE |
902 | }; |
903 | ||
c0ab21c2 TT |
904 | /* A subclass of die_reader_specs that holds storage and has complex |
905 | constructor and destructor behavior. */ | |
906 | ||
907 | class cutu_reader : public die_reader_specs | |
908 | { | |
909 | public: | |
910 | ||
911 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
912 | struct abbrev_table *abbrev_table, | |
6751ebae | 913 | int use_existing_cu, |
c0ab21c2 TT |
914 | bool skip_partial); |
915 | ||
916 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
917 | struct dwarf2_cu *parent_cu = nullptr, | |
918 | struct dwo_file *dwo_file = nullptr); | |
919 | ||
c0ab21c2 TT |
920 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
921 | ||
922 | const gdb_byte *info_ptr = nullptr; | |
923 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
924 | bool dummy_p = false; |
925 | ||
6751ebae TT |
926 | /* Release the new CU, putting it on the chain. This cannot be done |
927 | for dummy CUs. */ | |
928 | void keep (); | |
929 | ||
c0ab21c2 TT |
930 | private: |
931 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 932 | int use_existing_cu); |
c0ab21c2 TT |
933 | |
934 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
935 | std::unique_ptr<dwarf2_cu> m_new_cu; |
936 | ||
937 | /* The ordinary abbreviation table. */ | |
938 | abbrev_table_up m_abbrev_table_holder; | |
939 | ||
940 | /* The DWO abbreviation table. */ | |
941 | abbrev_table_up m_dwo_abbrev_table; | |
942 | }; | |
dee91e82 | 943 | |
c906108c | 944 | /* When we construct a partial symbol table entry we only |
0963b4bd | 945 | need this much information. */ |
6f06d47b | 946 | struct partial_die_info : public allocate_on_obstack |
c906108c | 947 | { |
6f06d47b YQ |
948 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
949 | ||
950 | /* Disable assign but still keep copy ctor, which is needed | |
951 | load_partial_dies. */ | |
952 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
953 | ||
52356b79 YQ |
954 | /* Adjust the partial die before generating a symbol for it. This |
955 | function may set the is_external flag or change the DIE's | |
956 | name. */ | |
957 | void fixup (struct dwarf2_cu *cu); | |
958 | ||
48fbe735 YQ |
959 | /* Read a minimal amount of information into the minimal die |
960 | structure. */ | |
961 | const gdb_byte *read (const struct die_reader_specs *reader, | |
962 | const struct abbrev_info &abbrev, | |
963 | const gdb_byte *info_ptr); | |
964 | ||
72bf9492 | 965 | /* Offset of this DIE. */ |
6f06d47b | 966 | const sect_offset sect_off; |
72bf9492 DJ |
967 | |
968 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 969 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 970 | |
72bf9492 | 971 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
972 | const unsigned int has_children : 1; |
973 | ||
72bf9492 DJ |
974 | unsigned int is_external : 1; |
975 | unsigned int is_declaration : 1; | |
976 | unsigned int has_type : 1; | |
977 | unsigned int has_specification : 1; | |
978 | unsigned int has_pc_info : 1; | |
481860b3 | 979 | unsigned int may_be_inlined : 1; |
72bf9492 | 980 | |
0c1b455e TT |
981 | /* This DIE has been marked DW_AT_main_subprogram. */ |
982 | unsigned int main_subprogram : 1; | |
983 | ||
72bf9492 DJ |
984 | /* Flag set if the SCOPE field of this structure has been |
985 | computed. */ | |
986 | unsigned int scope_set : 1; | |
987 | ||
fa4028e9 JB |
988 | /* Flag set if the DIE has a byte_size attribute. */ |
989 | unsigned int has_byte_size : 1; | |
990 | ||
ff908ebf AW |
991 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
992 | unsigned int has_const_value : 1; | |
993 | ||
98bfdba5 PA |
994 | /* Flag set if any of the DIE's children are template arguments. */ |
995 | unsigned int has_template_arguments : 1; | |
996 | ||
52356b79 | 997 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
998 | unsigned int fixup_called : 1; |
999 | ||
36586728 TT |
1000 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1001 | unsigned int is_dwz : 1; | |
1002 | ||
1003 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1004 | unsigned int spec_is_dwz : 1; | |
1005 | ||
72bf9492 | 1006 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1007 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1008 | const char *name = nullptr; |
72bf9492 | 1009 | |
abc72ce4 | 1010 | /* The linkage name, if present. */ |
6f06d47b | 1011 | const char *linkage_name = nullptr; |
abc72ce4 | 1012 | |
72bf9492 DJ |
1013 | /* The scope to prepend to our children. This is generally |
1014 | allocated on the comp_unit_obstack, so will disappear | |
1015 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1016 | const char *scope = nullptr; |
72bf9492 | 1017 | |
95554aad TT |
1018 | /* Some data associated with the partial DIE. The tag determines |
1019 | which field is live. */ | |
1020 | union | |
1021 | { | |
1022 | /* The location description associated with this DIE, if any. */ | |
1023 | struct dwarf_block *locdesc; | |
1024 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1025 | sect_offset sect_off; |
6f06d47b | 1026 | } d {}; |
72bf9492 DJ |
1027 | |
1028 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1029 | CORE_ADDR lowpc = 0; |
1030 | CORE_ADDR highpc = 0; | |
72bf9492 | 1031 | |
93311388 | 1032 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1033 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1034 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1035 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1036 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1037 | |
1038 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1039 | DW_AT_specification (or DW_AT_abstract_origin or | |
1040 | DW_AT_extension). */ | |
6f06d47b | 1041 | sect_offset spec_offset {}; |
72bf9492 DJ |
1042 | |
1043 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1044 | if any. */ | |
6f06d47b YQ |
1045 | struct partial_die_info *die_parent = nullptr; |
1046 | struct partial_die_info *die_child = nullptr; | |
1047 | struct partial_die_info *die_sibling = nullptr; | |
1048 | ||
1049 | friend struct partial_die_info * | |
1050 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1051 | ||
1052 | private: | |
1053 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1054 | partial_die_info (sect_offset sect_off) | |
1055 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1056 | { | |
1057 | } | |
1058 | ||
1059 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1060 | int has_children_) | |
1061 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1062 | { | |
1063 | is_external = 0; | |
1064 | is_declaration = 0; | |
1065 | has_type = 0; | |
1066 | has_specification = 0; | |
1067 | has_pc_info = 0; | |
1068 | may_be_inlined = 0; | |
1069 | main_subprogram = 0; | |
1070 | scope_set = 0; | |
1071 | has_byte_size = 0; | |
1072 | has_const_value = 0; | |
1073 | has_template_arguments = 0; | |
1074 | fixup_called = 0; | |
1075 | is_dwz = 0; | |
1076 | spec_is_dwz = 0; | |
1077 | } | |
c906108c SS |
1078 | }; |
1079 | ||
c906108c SS |
1080 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1081 | but this would require a corresponding change in unpack_field_as_long | |
1082 | and friends. */ | |
1083 | static int bits_per_byte = 8; | |
1084 | ||
2ddeaf8a TT |
1085 | /* When reading a variant or variant part, we track a bit more |
1086 | information about the field, and store it in an object of this | |
1087 | type. */ | |
1088 | ||
1089 | struct variant_field | |
1090 | { | |
1091 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1092 | value. */ | |
1093 | ULONGEST discriminant_value; | |
1094 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1095 | default branch. */ | |
1096 | bool default_branch; | |
1097 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1098 | field is the discriminant. */ | |
1099 | bool is_discriminant; | |
1100 | }; | |
1101 | ||
52059ffd TT |
1102 | struct nextfield |
1103 | { | |
be2daae6 TT |
1104 | int accessibility = 0; |
1105 | int virtuality = 0; | |
2ddeaf8a | 1106 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1107 | struct variant_field variant {}; |
1108 | struct field field {}; | |
52059ffd TT |
1109 | }; |
1110 | ||
1111 | struct fnfieldlist | |
1112 | { | |
be2daae6 TT |
1113 | const char *name = nullptr; |
1114 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1115 | }; |
1116 | ||
c906108c SS |
1117 | /* The routines that read and process dies for a C struct or C++ class |
1118 | pass lists of data member fields and lists of member function fields | |
1119 | in an instance of a field_info structure, as defined below. */ | |
1120 | struct field_info | |
c5aa993b | 1121 | { |
0963b4bd | 1122 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1123 | std::vector<struct nextfield> fields; |
1124 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1125 | |
85102364 | 1126 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1127 | int non_public_fields = 0; |
c906108c | 1128 | |
c5aa993b JM |
1129 | /* Member function fieldlist array, contains name of possibly overloaded |
1130 | member function, number of overloaded member functions and a pointer | |
1131 | to the head of the member function field chain. */ | |
be2daae6 | 1132 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1133 | |
1134 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1135 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1136 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1137 | |
1138 | /* Nested types defined by this class and the number of elements in this | |
1139 | list. */ | |
be2daae6 | 1140 | std::vector<struct decl_field> nested_types_list; |
317f7127 TT |
1141 | |
1142 | /* Return the total number of fields (including baseclasses). */ | |
1143 | int nfields () const | |
1144 | { | |
1145 | return fields.size () + baseclasses.size (); | |
1146 | } | |
c5aa993b | 1147 | }; |
c906108c | 1148 | |
ae038cb0 DJ |
1149 | /* Loaded secondary compilation units are kept in memory until they |
1150 | have not been referenced for the processing of this many | |
1151 | compilation units. Set this to zero to disable caching. Cache | |
1152 | sizes of up to at least twenty will improve startup time for | |
1153 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1154 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1155 | static void |
b4f54984 DE |
1156 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1157 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1158 | { |
3e43a32a | 1159 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1160 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1161 | value); |
1162 | } | |
4390d890 | 1163 | \f |
c906108c SS |
1164 | /* local function prototypes */ |
1165 | ||
918dd910 JK |
1166 | static void dwarf2_find_base_address (struct die_info *die, |
1167 | struct dwarf2_cu *cu); | |
1168 | ||
891813be | 1169 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1170 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1171 | ||
f1902523 JK |
1172 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1173 | const gdb_byte *info_ptr, | |
3e225074 | 1174 | struct die_info *type_unit_die); |
f1902523 | 1175 | |
ed2dc618 SM |
1176 | static void dwarf2_build_psymtabs_hard |
1177 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1178 | |
72bf9492 DJ |
1179 | static void scan_partial_symbols (struct partial_die_info *, |
1180 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1181 | int, struct dwarf2_cu *); |
c906108c | 1182 | |
72bf9492 DJ |
1183 | static void add_partial_symbol (struct partial_die_info *, |
1184 | struct dwarf2_cu *); | |
63d06c5c | 1185 | |
72bf9492 DJ |
1186 | static void add_partial_namespace (struct partial_die_info *pdi, |
1187 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1188 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1189 | |
5d7cb8df | 1190 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1191 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1192 | struct dwarf2_cu *cu); |
1193 | ||
72bf9492 DJ |
1194 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1195 | struct dwarf2_cu *cu); | |
91c24f0a | 1196 | |
bc30ff58 JB |
1197 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1198 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1199 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1200 | |
d521ce57 | 1201 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1202 | |
dee91e82 | 1203 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1204 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1205 | |
fb816e8b TV |
1206 | /* A pair of partial_die_info and compilation unit. */ |
1207 | struct cu_partial_die_info | |
1208 | { | |
1209 | /* The compilation unit of the partial_die_info. */ | |
1210 | struct dwarf2_cu *cu; | |
1211 | /* A partial_die_info. */ | |
1212 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1213 | |
1214 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1215 | : cu (cu), | |
1216 | pdi (pdi) | |
405feb71 | 1217 | { /* Nothing. */ } |
122cf0f2 AB |
1218 | |
1219 | private: | |
1220 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1221 | }; |
1222 | ||
122cf0f2 AB |
1223 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1224 | struct dwarf2_cu *); | |
72bf9492 | 1225 | |
d521ce57 TT |
1226 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1227 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1228 | const gdb_byte *, bool *need_reprocess); |
1229 | ||
1230 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1231 | struct attribute *attr); | |
1232 | ||
1233 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1234 | |
ed2dc618 SM |
1235 | static sect_offset read_abbrev_offset |
1236 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1237 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1238 | |
ed2dc618 SM |
1239 | static const char *read_indirect_string |
1240 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1241 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1242 | |
ed2dc618 | 1243 | static const char *read_indirect_string_at_offset |
4f44ae6c | 1244 | (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset); |
927aa2e7 | 1245 | |
d521ce57 TT |
1246 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1247 | const gdb_byte *, | |
3019eac3 DE |
1248 | unsigned int *); |
1249 | ||
18a8505e AT |
1250 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1251 | ULONGEST str_index); | |
1252 | ||
1253 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1254 | ULONGEST str_index); | |
3019eac3 | 1255 | |
e142c38c | 1256 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1257 | |
e142c38c DJ |
1258 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1259 | struct dwarf2_cu *); | |
c906108c | 1260 | |
7d45c7c3 KB |
1261 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1262 | struct dwarf2_cu *cu); | |
1263 | ||
a084a2a6 AT |
1264 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1265 | ||
05cf31d1 JB |
1266 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1267 | struct dwarf2_cu *cu); | |
1268 | ||
e142c38c | 1269 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1270 | |
e142c38c | 1271 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1272 | struct dwarf2_cu **); |
63d06c5c | 1273 | |
9c541725 | 1274 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1275 | struct dwarf2_cu *cu); |
debd256d | 1276 | |
f3f5162e | 1277 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1278 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1279 | CORE_ADDR, int decode_mapping); |
c906108c | 1280 | |
804d2729 TT |
1281 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1282 | const char *); | |
c906108c | 1283 | |
a14ed312 | 1284 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1285 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1286 | |
ff39bb5e | 1287 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1288 | struct dwarf2_cu *); |
c906108c | 1289 | |
ff39bb5e | 1290 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1291 | struct type *type, |
1292 | const char *name, | |
1293 | struct obstack *obstack, | |
12df843f | 1294 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1295 | const gdb_byte **bytes, |
98bfdba5 | 1296 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1297 | |
e7c27a73 | 1298 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1299 | |
b4ba55a1 JB |
1300 | static int need_gnat_info (struct dwarf2_cu *); |
1301 | ||
3e43a32a MS |
1302 | static struct type *die_descriptive_type (struct die_info *, |
1303 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1304 | |
1305 | static void set_descriptive_type (struct type *, struct die_info *, | |
1306 | struct dwarf2_cu *); | |
1307 | ||
e7c27a73 DJ |
1308 | static struct type *die_containing_type (struct die_info *, |
1309 | struct dwarf2_cu *); | |
c906108c | 1310 | |
ff39bb5e | 1311 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1312 | struct dwarf2_cu *); |
c906108c | 1313 | |
f792889a | 1314 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1315 | |
673bfd45 DE |
1316 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1317 | ||
0d5cff50 | 1318 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1319 | |
6e70227d | 1320 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1321 | const char *suffix, int physname, |
1322 | struct dwarf2_cu *cu); | |
63d06c5c | 1323 | |
e7c27a73 | 1324 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1325 | |
348e048f DE |
1326 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1327 | ||
e7c27a73 | 1328 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1329 | |
e7c27a73 | 1330 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1331 | |
96408a79 SA |
1332 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1333 | ||
71a3c369 TT |
1334 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1335 | ||
ff013f42 | 1336 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1337 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1338 | |
41144253 | 1339 | /* Return the .debug_loclists section to use for cu. */ |
1340 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1341 | ||
3a2b436a | 1342 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1343 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1344 | enum pc_bounds_kind |
1345 | { | |
e385593e | 1346 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1347 | PC_BOUNDS_NOT_PRESENT, |
1348 | ||
e385593e JK |
1349 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1350 | were present but they do not form a valid range of PC addresses. */ | |
1351 | PC_BOUNDS_INVALID, | |
1352 | ||
3a2b436a JK |
1353 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1354 | PC_BOUNDS_RANGES, | |
1355 | ||
1356 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1357 | PC_BOUNDS_HIGH_LOW, | |
1358 | }; | |
1359 | ||
1360 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1361 | CORE_ADDR *, CORE_ADDR *, | |
1362 | struct dwarf2_cu *, | |
891813be | 1363 | dwarf2_psymtab *); |
c906108c | 1364 | |
fae299cd DC |
1365 | static void get_scope_pc_bounds (struct die_info *, |
1366 | CORE_ADDR *, CORE_ADDR *, | |
1367 | struct dwarf2_cu *); | |
1368 | ||
801e3a5b JB |
1369 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1370 | CORE_ADDR, struct dwarf2_cu *); | |
1371 | ||
a14ed312 | 1372 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1373 | struct dwarf2_cu *); |
c906108c | 1374 | |
a14ed312 | 1375 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1376 | struct type *, struct dwarf2_cu *); |
c906108c | 1377 | |
a14ed312 | 1378 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1379 | struct die_info *, struct type *, |
e7c27a73 | 1380 | struct dwarf2_cu *); |
c906108c | 1381 | |
a14ed312 | 1382 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1383 | struct type *, |
1384 | struct dwarf2_cu *); | |
c906108c | 1385 | |
134d01f1 | 1386 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1387 | |
e7c27a73 | 1388 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1389 | |
e7c27a73 | 1390 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1391 | |
5d7cb8df JK |
1392 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1393 | ||
804d2729 | 1394 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1395 | |
27aa8d6a SW |
1396 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1397 | ||
74921315 KS |
1398 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1399 | ||
f55ee35c JK |
1400 | static struct type *read_module_type (struct die_info *die, |
1401 | struct dwarf2_cu *cu); | |
1402 | ||
38d518c9 | 1403 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1404 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1405 | |
134d01f1 | 1406 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1407 | |
e7c27a73 | 1408 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1409 | |
6e70227d | 1410 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1411 | struct dwarf2_cu *); |
1412 | ||
bf6af496 | 1413 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1414 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1415 | struct die_info *); |
639d11d3 | 1416 | |
dee91e82 | 1417 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1418 | const gdb_byte *info_ptr, |
1419 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1420 | struct die_info *parent); |
1421 | ||
d521ce57 TT |
1422 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1423 | struct die_info **, const gdb_byte *, | |
3e225074 | 1424 | int); |
3019eac3 | 1425 | |
d521ce57 | 1426 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1427 | struct die_info **, const gdb_byte *); |
93311388 | 1428 | |
e7c27a73 | 1429 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1430 | |
15d034d0 | 1431 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1432 | struct objfile *); |
71c25dea | 1433 | |
15d034d0 | 1434 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1435 | |
15d034d0 | 1436 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1437 | struct die_info *die, |
1438 | struct dwarf2_cu *cu); | |
1439 | ||
ca69b9e6 DE |
1440 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1441 | struct dwarf2_cu *cu); | |
1442 | ||
e142c38c | 1443 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1444 | struct dwarf2_cu **); |
9219021c | 1445 | |
d97bc12b DE |
1446 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1447 | ||
1448 | static void dump_die_for_error (struct die_info *); | |
1449 | ||
1450 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1451 | struct die_info *); | |
c906108c | 1452 | |
d97bc12b | 1453 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1454 | |
51545339 | 1455 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1456 | struct dwarf2_cu *); |
c906108c | 1457 | |
348e048f | 1458 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1459 | const struct attribute *, |
348e048f DE |
1460 | struct dwarf2_cu **); |
1461 | ||
10b3939b | 1462 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1463 | const struct attribute *, |
f2f0e013 | 1464 | struct dwarf2_cu **); |
c906108c | 1465 | |
348e048f | 1466 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1467 | const struct attribute *, |
348e048f DE |
1468 | struct dwarf2_cu **); |
1469 | ||
ac9ec31b DE |
1470 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1471 | struct dwarf2_cu *); | |
1472 | ||
1473 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1474 | const struct attribute *, |
ac9ec31b DE |
1475 | struct dwarf2_cu *); |
1476 | ||
e5fe5e75 | 1477 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1478 | |
52dc124a | 1479 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1480 | |
63e43d3a PMR |
1481 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1482 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1483 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1484 | |
c906108c SS |
1485 | /* memory allocation interface */ |
1486 | ||
7b5a2f43 | 1487 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1488 | |
b60c80d6 | 1489 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1490 | |
43f3e411 | 1491 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1492 | |
8cf6f0b1 TT |
1493 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1494 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1495 | const struct attribute *attr); |
8cf6f0b1 | 1496 | |
ff39bb5e | 1497 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1498 | struct symbol *sym, |
f1e6e072 TT |
1499 | struct dwarf2_cu *cu, |
1500 | int is_block); | |
4c2df51b | 1501 | |
d521ce57 TT |
1502 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1503 | const gdb_byte *info_ptr, | |
1504 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1505 | |
72bf9492 DJ |
1506 | static hashval_t partial_die_hash (const void *item); |
1507 | ||
1508 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1509 | ||
ae038cb0 | 1510 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1511 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1512 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1513 | |
9816fde3 | 1514 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1515 | struct die_info *comp_unit_die, |
1516 | enum language pretend_language); | |
93311388 | 1517 | |
ed2dc618 | 1518 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1519 | |
dee91e82 | 1520 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1521 | |
f792889a DJ |
1522 | static struct type *set_die_type (struct die_info *, struct type *, |
1523 | struct dwarf2_cu *); | |
1c379e20 | 1524 | |
ed2dc618 | 1525 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1526 | |
ed2dc618 | 1527 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1528 | |
58f0c718 | 1529 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1530 | enum language); |
10b3939b | 1531 | |
95554aad TT |
1532 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1533 | enum language); | |
10b3939b | 1534 | |
f4dc4d17 DE |
1535 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1536 | enum language); | |
1537 | ||
10b3939b DJ |
1538 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1539 | struct dwarf2_per_cu_data *); | |
1540 | ||
ae038cb0 DJ |
1541 | static void dwarf2_mark (struct dwarf2_cu *); |
1542 | ||
1543 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1544 | ||
b64f50a1 | 1545 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1546 | struct dwarf2_per_cu_data *); |
673bfd45 | 1547 | |
f792889a | 1548 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1549 | |
95554aad TT |
1550 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1551 | enum language pretend_language); | |
1552 | ||
ed2dc618 | 1553 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1554 | |
b303c6f6 AB |
1555 | /* Class, the destructor of which frees all allocated queue entries. This |
1556 | will only have work to do if an error was thrown while processing the | |
1557 | dwarf. If no error was thrown then the queue entries should have all | |
1558 | been processed, and freed, as we went along. */ | |
1559 | ||
1560 | class dwarf2_queue_guard | |
1561 | { | |
1562 | public: | |
39856def TT |
1563 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1564 | : m_per_objfile (per_objfile) | |
1565 | { | |
1566 | } | |
b303c6f6 AB |
1567 | |
1568 | /* Free any entries remaining on the queue. There should only be | |
1569 | entries left if we hit an error while processing the dwarf. */ | |
1570 | ~dwarf2_queue_guard () | |
1571 | { | |
39856def TT |
1572 | /* Ensure that no memory is allocated by the queue. */ |
1573 | std::queue<dwarf2_queue_item> empty; | |
1574 | std::swap (m_per_objfile->queue, empty); | |
1575 | } | |
b303c6f6 | 1576 | |
39856def | 1577 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1578 | |
39856def TT |
1579 | private: |
1580 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1581 | }; |
1582 | ||
39856def TT |
1583 | dwarf2_queue_item::~dwarf2_queue_item () |
1584 | { | |
1585 | /* Anything still marked queued is likely to be in an | |
1586 | inconsistent state, so discard it. */ | |
1587 | if (per_cu->queued) | |
1588 | { | |
1589 | if (per_cu->cu != NULL) | |
1590 | free_one_cached_comp_unit (per_cu); | |
1591 | per_cu->queued = 0; | |
1592 | } | |
1593 | } | |
1594 | ||
d721ba37 PA |
1595 | /* The return type of find_file_and_directory. Note, the enclosed |
1596 | string pointers are only valid while this object is valid. */ | |
1597 | ||
1598 | struct file_and_directory | |
1599 | { | |
1600 | /* The filename. This is never NULL. */ | |
1601 | const char *name; | |
1602 | ||
1603 | /* The compilation directory. NULL if not known. If we needed to | |
1604 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1605 | points directly to the DW_AT_comp_dir string attribute owned by | |
1606 | the obstack that owns the DIE. */ | |
1607 | const char *comp_dir; | |
1608 | ||
1609 | /* If we needed to build a new string for comp_dir, this is what | |
1610 | owns the storage. */ | |
1611 | std::string comp_dir_storage; | |
1612 | }; | |
1613 | ||
1614 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1615 | struct dwarf2_cu *cu); | |
9291a0cd | 1616 | |
298e9637 | 1617 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1618 | |
298e9637 | 1619 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1620 | |
57d63ce2 | 1621 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1622 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1623 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1624 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1625 | |
ed2dc618 SM |
1626 | static struct dwp_file *get_dwp_file |
1627 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1628 | |
3019eac3 | 1629 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1630 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1631 | |
1632 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1633 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1634 | |
89e63ee4 DE |
1635 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1636 | ||
263db9a1 TT |
1637 | /* A unique pointer to a dwo_file. */ |
1638 | ||
51ac9db5 | 1639 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1640 | |
ed2dc618 | 1641 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1642 | |
1b80a9fa | 1643 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1644 | |
1645 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1646 | \f |
1647 | /* Various complaints about symbol reading that don't abort the process. */ | |
1648 | ||
4390d890 DE |
1649 | static void |
1650 | dwarf2_debug_line_missing_file_complaint (void) | |
1651 | { | |
b98664d3 | 1652 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1653 | } |
1654 | ||
1655 | static void | |
1656 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1657 | { | |
b98664d3 | 1658 | complaint (_(".debug_line section has line " |
4390d890 DE |
1659 | "program sequence without an end")); |
1660 | } | |
1661 | ||
1662 | static void | |
1663 | dwarf2_complex_location_expr_complaint (void) | |
1664 | { | |
b98664d3 | 1665 | complaint (_("location expression too complex")); |
4390d890 DE |
1666 | } |
1667 | ||
1668 | static void | |
1669 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1670 | int arg3) | |
1671 | { | |
b98664d3 | 1672 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1673 | arg1, arg2, arg3); |
1674 | } | |
1675 | ||
4390d890 DE |
1676 | static void |
1677 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1678 | { | |
b98664d3 | 1679 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1680 | arg1, arg2); |
1681 | } | |
527f3840 JK |
1682 | |
1683 | /* Hash function for line_header_hash. */ | |
1684 | ||
1685 | static hashval_t | |
1686 | line_header_hash (const struct line_header *ofs) | |
1687 | { | |
9c541725 | 1688 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1689 | } |
1690 | ||
1691 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1692 | ||
1693 | static hashval_t | |
1694 | line_header_hash_voidp (const void *item) | |
1695 | { | |
9a3c8263 | 1696 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1697 | |
1698 | return line_header_hash (ofs); | |
1699 | } | |
1700 | ||
1701 | /* Equality function for line_header_hash. */ | |
1702 | ||
1703 | static int | |
1704 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1705 | { | |
9a3c8263 SM |
1706 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1707 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1708 | |
9c541725 | 1709 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1710 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1711 | } | |
1712 | ||
4390d890 | 1713 | \f |
9291a0cd | 1714 | |
330cdd98 PA |
1715 | /* See declaration. */ |
1716 | ||
1717 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
1718 | const dwarf2_debug_sections *names, |
1719 | bool can_copy_) | |
1720 | : objfile (objfile_), | |
1721 | can_copy (can_copy_) | |
330cdd98 PA |
1722 | { |
1723 | if (names == NULL) | |
1724 | names = &dwarf2_elf_names; | |
1725 | ||
1726 | bfd *obfd = objfile->obfd; | |
1727 | ||
1728 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
1729 | locate_sections (obfd, sec, *names); | |
1730 | } | |
1731 | ||
1732 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
1733 | { | |
1734 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
1735 | free_cached_comp_units (); | |
1736 | ||
b76e467d | 1737 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1738 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1739 | |
b2bdb8cf | 1740 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1741 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1742 | |
330cdd98 PA |
1743 | /* Everything else should be on the objfile obstack. */ |
1744 | } | |
1745 | ||
1746 | /* See declaration. */ | |
1747 | ||
1748 | void | |
1749 | dwarf2_per_objfile::free_cached_comp_units () | |
1750 | { | |
1751 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
1752 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
1753 | while (per_cu != NULL) | |
1754 | { | |
1755 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
1756 | ||
fcd3b13d | 1757 | delete per_cu->cu; |
330cdd98 PA |
1758 | *last_chain = next_cu; |
1759 | per_cu = next_cu; | |
1760 | } | |
1761 | } | |
1762 | ||
11ed8cad TT |
1763 | /* A helper class that calls free_cached_comp_units on |
1764 | destruction. */ | |
1765 | ||
1766 | class free_cached_comp_units | |
1767 | { | |
1768 | public: | |
1769 | ||
1770 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1771 | : m_per_objfile (per_objfile) | |
1772 | { | |
1773 | } | |
1774 | ||
1775 | ~free_cached_comp_units () | |
1776 | { | |
1777 | m_per_objfile->free_cached_comp_units (); | |
1778 | } | |
1779 | ||
1780 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1781 | ||
1782 | private: | |
1783 | ||
1784 | dwarf2_per_objfile *m_per_objfile; | |
1785 | }; | |
1786 | ||
c906108c | 1787 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1788 | information and return true if we have enough to do something. |
1789 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1790 | ELF names are used. CAN_COPY is true for formats where symbol |
1791 | interposition is possible and so symbol values must follow copy | |
1792 | relocation rules. */ | |
c906108c SS |
1793 | |
1794 | int | |
251d32d9 | 1795 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1796 | const struct dwarf2_debug_sections *names, |
1797 | bool can_copy) | |
c906108c | 1798 | { |
97cbe998 SDJ |
1799 | if (objfile->flags & OBJF_READNEVER) |
1800 | return 0; | |
1801 | ||
ed2dc618 SM |
1802 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1803 | = get_dwarf2_per_objfile (objfile); | |
1804 | ||
1805 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 1806 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
1807 | names, |
1808 | can_copy); | |
5bfd760d | 1809 | |
73869dc2 | 1810 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 1811 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 1812 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 1813 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
1814 | } |
1815 | ||
251d32d9 TG |
1816 | /* When loading sections, we look either for uncompressed section or for |
1817 | compressed section names. */ | |
233a11ab CS |
1818 | |
1819 | static int | |
251d32d9 TG |
1820 | section_is_p (const char *section_name, |
1821 | const struct dwarf2_section_names *names) | |
233a11ab | 1822 | { |
251d32d9 TG |
1823 | if (names->normal != NULL |
1824 | && strcmp (section_name, names->normal) == 0) | |
1825 | return 1; | |
1826 | if (names->compressed != NULL | |
1827 | && strcmp (section_name, names->compressed) == 0) | |
1828 | return 1; | |
1829 | return 0; | |
233a11ab CS |
1830 | } |
1831 | ||
330cdd98 | 1832 | /* See declaration. */ |
c906108c | 1833 | |
330cdd98 PA |
1834 | void |
1835 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
1836 | const dwarf2_debug_sections &names) | |
c906108c | 1837 | { |
fd361982 | 1838 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1839 | |
dc7650b8 JK |
1840 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1841 | { | |
1842 | } | |
950b7495 KS |
1843 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1844 | > bfd_get_file_size (abfd)) | |
1845 | { | |
1846 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1847 | warning (_("Discarding section %s which has a section size (%s" | |
1848 | ") larger than the file size [in module %s]"), | |
1849 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1850 | bfd_get_filename (abfd)); | |
1851 | } | |
330cdd98 | 1852 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1853 | { |
330cdd98 | 1854 | this->info.s.section = sectp; |
fd361982 | 1855 | this->info.size = bfd_section_size (sectp); |
c906108c | 1856 | } |
330cdd98 | 1857 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1858 | { |
330cdd98 | 1859 | this->abbrev.s.section = sectp; |
fd361982 | 1860 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1861 | } |
330cdd98 | 1862 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1863 | { |
330cdd98 | 1864 | this->line.s.section = sectp; |
fd361982 | 1865 | this->line.size = bfd_section_size (sectp); |
c906108c | 1866 | } |
330cdd98 | 1867 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1868 | { |
330cdd98 | 1869 | this->loc.s.section = sectp; |
fd361982 | 1870 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1871 | } |
330cdd98 | 1872 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1873 | { |
330cdd98 | 1874 | this->loclists.s.section = sectp; |
fd361982 | 1875 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1876 | } |
330cdd98 | 1877 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1878 | { |
330cdd98 | 1879 | this->macinfo.s.section = sectp; |
fd361982 | 1880 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1881 | } |
330cdd98 | 1882 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1883 | { |
330cdd98 | 1884 | this->macro.s.section = sectp; |
fd361982 | 1885 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1886 | } |
330cdd98 | 1887 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1888 | { |
330cdd98 | 1889 | this->str.s.section = sectp; |
fd361982 | 1890 | this->str.size = bfd_section_size (sectp); |
c906108c | 1891 | } |
18a8505e AT |
1892 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1893 | { | |
1894 | this->str_offsets.s.section = sectp; | |
1895 | this->str_offsets.size = bfd_section_size (sectp); | |
1896 | } | |
330cdd98 | 1897 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1898 | { |
330cdd98 | 1899 | this->line_str.s.section = sectp; |
fd361982 | 1900 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1901 | } |
330cdd98 | 1902 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1903 | { |
330cdd98 | 1904 | this->addr.s.section = sectp; |
fd361982 | 1905 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1906 | } |
330cdd98 | 1907 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1908 | { |
330cdd98 | 1909 | this->frame.s.section = sectp; |
fd361982 | 1910 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1911 | } |
330cdd98 | 1912 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1913 | { |
330cdd98 | 1914 | this->eh_frame.s.section = sectp; |
fd361982 | 1915 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1916 | } |
330cdd98 | 1917 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1918 | { |
330cdd98 | 1919 | this->ranges.s.section = sectp; |
fd361982 | 1920 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 1921 | } |
330cdd98 | 1922 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 1923 | { |
330cdd98 | 1924 | this->rnglists.s.section = sectp; |
fd361982 | 1925 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 1926 | } |
330cdd98 | 1927 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 1928 | { |
8b70b953 TT |
1929 | struct dwarf2_section_info type_section; |
1930 | ||
1931 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 1932 | type_section.s.section = sectp; |
fd361982 | 1933 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 1934 | |
fd5866f6 | 1935 | this->types.push_back (type_section); |
348e048f | 1936 | } |
330cdd98 | 1937 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 1938 | { |
330cdd98 | 1939 | this->gdb_index.s.section = sectp; |
fd361982 | 1940 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 1941 | } |
927aa2e7 JK |
1942 | else if (section_is_p (sectp->name, &names.debug_names)) |
1943 | { | |
1944 | this->debug_names.s.section = sectp; | |
fd361982 | 1945 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
1946 | } |
1947 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
1948 | { | |
1949 | this->debug_aranges.s.section = sectp; | |
fd361982 | 1950 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 1951 | } |
dce234bc | 1952 | |
fd361982 AM |
1953 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
1954 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 1955 | this->has_section_at_zero = true; |
c906108c SS |
1956 | } |
1957 | ||
dce234bc | 1958 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1959 | SECTION_NAME. */ |
af34e669 | 1960 | |
dce234bc | 1961 | void |
3017a003 TG |
1962 | dwarf2_get_section_info (struct objfile *objfile, |
1963 | enum dwarf2_section_enum sect, | |
d521ce57 | 1964 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
1965 | bfd_size_type *sizep) |
1966 | { | |
5bfd760d | 1967 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 1968 | struct dwarf2_section_info *info; |
a3b2a86b TT |
1969 | |
1970 | /* We may see an objfile without any DWARF, in which case we just | |
1971 | return nothing. */ | |
1972 | if (data == NULL) | |
1973 | { | |
1974 | *sectp = NULL; | |
1975 | *bufp = NULL; | |
1976 | *sizep = 0; | |
1977 | return; | |
1978 | } | |
3017a003 TG |
1979 | switch (sect) |
1980 | { | |
1981 | case DWARF2_DEBUG_FRAME: | |
1982 | info = &data->frame; | |
1983 | break; | |
1984 | case DWARF2_EH_FRAME: | |
1985 | info = &data->eh_frame; | |
1986 | break; | |
1987 | default: | |
1988 | gdb_assert_not_reached ("unexpected section"); | |
1989 | } | |
dce234bc | 1990 | |
96b79293 | 1991 | info->read (objfile); |
dce234bc | 1992 | |
96b79293 | 1993 | *sectp = info->get_bfd_section (); |
dce234bc PP |
1994 | *bufp = info->buffer; |
1995 | *sizep = info->size; | |
1996 | } | |
1997 | ||
36586728 TT |
1998 | /* A helper function to find the sections for a .dwz file. */ |
1999 | ||
2000 | static void | |
2001 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2002 | { | |
9a3c8263 | 2003 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2004 | |
2005 | /* Note that we only support the standard ELF names, because .dwz | |
2006 | is ELF-only (at the time of writing). */ | |
2007 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2008 | { | |
049412e3 | 2009 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2010 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2011 | } |
2012 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2013 | { | |
049412e3 | 2014 | dwz_file->info.s.section = sectp; |
fd361982 | 2015 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2016 | } |
2017 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2018 | { | |
049412e3 | 2019 | dwz_file->str.s.section = sectp; |
fd361982 | 2020 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2021 | } |
2022 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2023 | { | |
049412e3 | 2024 | dwz_file->line.s.section = sectp; |
fd361982 | 2025 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2026 | } |
2027 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2028 | { | |
049412e3 | 2029 | dwz_file->macro.s.section = sectp; |
fd361982 | 2030 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2031 | } |
2ec9a5e0 TT |
2032 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2033 | { | |
049412e3 | 2034 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2035 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2036 | } |
927aa2e7 JK |
2037 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2038 | { | |
2039 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2040 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2041 | } |
36586728 TT |
2042 | } |
2043 | ||
c4973306 | 2044 | /* See dwarf2read.h. */ |
36586728 | 2045 | |
c4973306 | 2046 | struct dwz_file * |
ed2dc618 | 2047 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2048 | { |
36586728 | 2049 | const char *filename; |
acd13123 | 2050 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2051 | size_t buildid_len; |
2052 | bfd_byte *buildid; | |
36586728 TT |
2053 | |
2054 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2055 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2056 | |
4db1a1dc | 2057 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2058 | gdb::unique_xmalloc_ptr<char> data |
2059 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2060 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2061 | if (data == NULL) |
2062 | { | |
2063 | if (bfd_get_error () == bfd_error_no_error) | |
2064 | return NULL; | |
2065 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2066 | bfd_errmsg (bfd_get_error ())); | |
2067 | } | |
791afaa2 TT |
2068 | |
2069 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2070 | |
acd13123 TT |
2071 | buildid_len = (size_t) buildid_len_arg; |
2072 | ||
791afaa2 | 2073 | filename = data.get (); |
d721ba37 PA |
2074 | |
2075 | std::string abs_storage; | |
36586728 TT |
2076 | if (!IS_ABSOLUTE_PATH (filename)) |
2077 | { | |
14278e1f TT |
2078 | gdb::unique_xmalloc_ptr<char> abs |
2079 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2080 | |
14278e1f | 2081 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2082 | filename = abs_storage.c_str (); |
36586728 TT |
2083 | } |
2084 | ||
dc294be5 TT |
2085 | /* First try the file name given in the section. If that doesn't |
2086 | work, try to use the build-id instead. */ | |
192b62ce | 2087 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2088 | if (dwz_bfd != NULL) |
36586728 | 2089 | { |
192b62ce | 2090 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2091 | dwz_bfd.reset (nullptr); |
36586728 TT |
2092 | } |
2093 | ||
dc294be5 TT |
2094 | if (dwz_bfd == NULL) |
2095 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2096 | ||
0d79cdc4 AM |
2097 | if (dwz_bfd == nullptr) |
2098 | { | |
2099 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
2100 | const char *origname = dwarf2_per_objfile->objfile->original_name; | |
2101 | ||
2102 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2103 | buildid_len, | |
2104 | origname, | |
2105 | &alt_filename)); | |
2106 | ||
2107 | if (fd.get () >= 0) | |
2108 | { | |
2109 | /* File successfully retrieved from server. */ | |
2110 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget, -1); | |
2111 | ||
2112 | if (dwz_bfd == nullptr) | |
2113 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2114 | alt_filename.get ()); | |
2115 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2116 | dwz_bfd.reset (nullptr); | |
2117 | } | |
2118 | } | |
2119 | ||
dc294be5 TT |
2120 | if (dwz_bfd == NULL) |
2121 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2122 | objfile_name (dwarf2_per_objfile->objfile)); | |
2123 | ||
7ff8cb8c TT |
2124 | std::unique_ptr<struct dwz_file> result |
2125 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2126 | |
7ff8cb8c TT |
2127 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2128 | result.get ()); | |
36586728 | 2129 | |
7ff8cb8c TT |
2130 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2131 | result->dwz_bfd.get ()); | |
2132 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2133 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2134 | } |
9291a0cd | 2135 | \f |
7b9f3c50 DE |
2136 | /* DWARF quick_symbols_functions support. */ |
2137 | ||
2138 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2139 | unique line tables, so we maintain a separate table of all .debug_line | |
2140 | derived entries to support the sharing. | |
2141 | All the quick functions need is the list of file names. We discard the | |
2142 | line_header when we're done and don't need to record it here. */ | |
2143 | struct quick_file_names | |
2144 | { | |
094b34ac DE |
2145 | /* The data used to construct the hash key. */ |
2146 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2147 | |
2148 | /* The number of entries in file_names, real_names. */ | |
2149 | unsigned int num_file_names; | |
2150 | ||
2151 | /* The file names from the line table, after being run through | |
2152 | file_full_name. */ | |
2153 | const char **file_names; | |
2154 | ||
2155 | /* The file names from the line table after being run through | |
2156 | gdb_realpath. These are computed lazily. */ | |
2157 | const char **real_names; | |
2158 | }; | |
2159 | ||
2160 | /* When using the index (and thus not using psymtabs), each CU has an | |
2161 | object of this type. This is used to hold information needed by | |
2162 | the various "quick" methods. */ | |
2163 | struct dwarf2_per_cu_quick_data | |
2164 | { | |
2165 | /* The file table. This can be NULL if there was no file table | |
2166 | or it's currently not read in. | |
2167 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2168 | struct quick_file_names *file_names; | |
2169 | ||
2170 | /* The corresponding symbol table. This is NULL if symbols for this | |
2171 | CU have not yet been read. */ | |
43f3e411 | 2172 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2173 | |
2174 | /* A temporary mark bit used when iterating over all CUs in | |
2175 | expand_symtabs_matching. */ | |
2176 | unsigned int mark : 1; | |
2177 | ||
2178 | /* True if we've tried to read the file table and found there isn't one. | |
2179 | There will be no point in trying to read it again next time. */ | |
2180 | unsigned int no_file_data : 1; | |
2181 | }; | |
2182 | ||
094b34ac DE |
2183 | /* Utility hash function for a stmt_list_hash. */ |
2184 | ||
2185 | static hashval_t | |
2186 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2187 | { | |
2188 | hashval_t v = 0; | |
2189 | ||
2190 | if (stmt_list_hash->dwo_unit != NULL) | |
2191 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2192 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2193 | return v; |
2194 | } | |
2195 | ||
2196 | /* Utility equality function for a stmt_list_hash. */ | |
2197 | ||
2198 | static int | |
2199 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2200 | const struct stmt_list_hash *rhs) | |
2201 | { | |
2202 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2203 | return 0; | |
2204 | if (lhs->dwo_unit != NULL | |
2205 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2206 | return 0; | |
2207 | ||
9c541725 | 2208 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2209 | } |
2210 | ||
7b9f3c50 DE |
2211 | /* Hash function for a quick_file_names. */ |
2212 | ||
2213 | static hashval_t | |
2214 | hash_file_name_entry (const void *e) | |
2215 | { | |
9a3c8263 SM |
2216 | const struct quick_file_names *file_data |
2217 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2218 | |
094b34ac | 2219 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2220 | } |
2221 | ||
2222 | /* Equality function for a quick_file_names. */ | |
2223 | ||
2224 | static int | |
2225 | eq_file_name_entry (const void *a, const void *b) | |
2226 | { | |
9a3c8263 SM |
2227 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2228 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2229 | |
094b34ac | 2230 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2231 | } |
2232 | ||
2233 | /* Delete function for a quick_file_names. */ | |
2234 | ||
2235 | static void | |
2236 | delete_file_name_entry (void *e) | |
2237 | { | |
9a3c8263 | 2238 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2239 | int i; |
2240 | ||
2241 | for (i = 0; i < file_data->num_file_names; ++i) | |
2242 | { | |
2243 | xfree ((void*) file_data->file_names[i]); | |
2244 | if (file_data->real_names) | |
2245 | xfree ((void*) file_data->real_names[i]); | |
2246 | } | |
2247 | ||
2248 | /* The space for the struct itself lives on objfile_obstack, | |
2249 | so we don't free it here. */ | |
2250 | } | |
2251 | ||
2252 | /* Create a quick_file_names hash table. */ | |
2253 | ||
5895093f | 2254 | static htab_up |
7b9f3c50 DE |
2255 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2256 | { | |
5895093f TT |
2257 | return htab_up (htab_create_alloc (nr_initial_entries, |
2258 | hash_file_name_entry, eq_file_name_entry, | |
2259 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2260 | } |
9291a0cd | 2261 | |
918dd910 JK |
2262 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2263 | have to be created afterwards. You should call age_cached_comp_units after | |
2264 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2265 | ||
2266 | static void | |
58f0c718 | 2267 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2268 | { |
3019eac3 | 2269 | if (per_cu->is_debug_types) |
e5fe5e75 | 2270 | load_full_type_unit (per_cu); |
918dd910 | 2271 | else |
58f0c718 | 2272 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2273 | |
cc12ce38 DE |
2274 | if (per_cu->cu == NULL) |
2275 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2276 | |
2277 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2278 | } |
2279 | ||
a0f42c21 | 2280 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2281 | |
9291a0cd | 2282 | static void |
58f0c718 | 2283 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2284 | { |
ed2dc618 | 2285 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2286 | |
f4dc4d17 DE |
2287 | /* Skip type_unit_groups, reading the type units they contain |
2288 | is handled elsewhere. */ | |
197400e8 | 2289 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2290 | return; |
2291 | ||
b303c6f6 AB |
2292 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2293 | the queue. After this point we're guaranteed to leave this function | |
2294 | with the dwarf queue empty. */ | |
39856def | 2295 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2296 | |
95554aad | 2297 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2298 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2299 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2300 | { | |
2301 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2302 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2303 | |
2304 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2305 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2306 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2307 | if (!per_cu->is_debug_types | |
cc12ce38 | 2308 | && per_cu->cu != NULL |
89e63ee4 DE |
2309 | && per_cu->cu->dwo_unit != NULL |
2310 | && dwarf2_per_objfile->index_table != NULL | |
2311 | && dwarf2_per_objfile->index_table->version <= 7 | |
2312 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2313 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2314 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2315 | } |
9291a0cd | 2316 | |
ed2dc618 | 2317 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2318 | |
2319 | /* Age the cache, releasing compilation units that have not | |
2320 | been used recently. */ | |
ed2dc618 | 2321 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2322 | } |
2323 | ||
2324 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2325 | the objfile from which this CU came. Returns the resulting symbol | |
2326 | table. */ | |
2fdf6df6 | 2327 | |
43f3e411 | 2328 | static struct compunit_symtab * |
58f0c718 | 2329 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2330 | { |
ed2dc618 SM |
2331 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2332 | ||
95554aad | 2333 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2334 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2335 | { |
11ed8cad | 2336 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2337 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2338 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2339 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2340 | } |
f194fefb | 2341 | |
43f3e411 | 2342 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2343 | } |
2344 | ||
ff4c9fec | 2345 | /* See declaration. */ |
f4dc4d17 | 2346 | |
ff4c9fec SM |
2347 | dwarf2_per_cu_data * |
2348 | dwarf2_per_objfile::get_cutu (int index) | |
2349 | { | |
b76e467d | 2350 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2351 | { |
b76e467d | 2352 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2353 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2354 | return &this->all_type_units[index]->per_cu; |
2355 | } | |
f4dc4d17 | 2356 | |
ff4c9fec SM |
2357 | return this->all_comp_units[index]; |
2358 | } | |
f4dc4d17 | 2359 | |
ff4c9fec | 2360 | /* See declaration. */ |
2fdf6df6 | 2361 | |
ff4c9fec SM |
2362 | dwarf2_per_cu_data * |
2363 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2364 | { |
b76e467d | 2365 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2366 | |
ff4c9fec | 2367 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2368 | } |
2369 | ||
ff4c9fec | 2370 | /* See declaration. */ |
f4dc4d17 | 2371 | |
ff4c9fec SM |
2372 | signatured_type * |
2373 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2374 | { |
b2bdb8cf | 2375 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2376 | |
ff4c9fec | 2377 | return this->all_type_units[index]; |
1fd400ff TT |
2378 | } |
2379 | ||
4b514bc8 JK |
2380 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2381 | objfile_obstack, and constructed with the specified field | |
2382 | values. */ | |
2383 | ||
2384 | static dwarf2_per_cu_data * | |
ed2dc618 | 2385 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2386 | struct dwarf2_section_info *section, |
2387 | int is_dwz, | |
2388 | sect_offset sect_off, ULONGEST length) | |
2389 | { | |
ed2dc618 | 2390 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2391 | dwarf2_per_cu_data *the_cu |
2392 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2393 | struct dwarf2_per_cu_data); | |
2394 | the_cu->sect_off = sect_off; | |
2395 | the_cu->length = length; | |
e3b94546 | 2396 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2397 | the_cu->section = section; |
2398 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2399 | struct dwarf2_per_cu_quick_data); | |
2400 | the_cu->is_dwz = is_dwz; | |
2401 | return the_cu; | |
2402 | } | |
2403 | ||
2ec9a5e0 TT |
2404 | /* A helper for create_cus_from_index that handles a given list of |
2405 | CUs. */ | |
2fdf6df6 | 2406 | |
74a0d9f6 | 2407 | static void |
12359b5e | 2408 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2409 | const gdb_byte *cu_list, offset_type n_elements, |
2410 | struct dwarf2_section_info *section, | |
b76e467d | 2411 | int is_dwz) |
9291a0cd | 2412 | { |
12359b5e | 2413 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2414 | { |
74a0d9f6 | 2415 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2416 | |
2417 | sect_offset sect_off | |
2418 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2419 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2420 | cu_list += 2 * 8; |
2421 | ||
b76e467d | 2422 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2423 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2424 | sect_off, length); | |
b76e467d | 2425 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2426 | } |
9291a0cd TT |
2427 | } |
2428 | ||
2ec9a5e0 | 2429 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2430 | the CU objects for this objfile. */ |
2ec9a5e0 | 2431 | |
74a0d9f6 | 2432 | static void |
12359b5e | 2433 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2434 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2435 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2436 | { | |
b76e467d SM |
2437 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
2438 | dwarf2_per_objfile->all_comp_units.reserve | |
2439 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2440 | |
12359b5e | 2441 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 2442 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
2443 | |
2444 | if (dwz_elements == 0) | |
74a0d9f6 | 2445 | return; |
2ec9a5e0 | 2446 | |
12359b5e SM |
2447 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
2448 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 2449 | &dwz->info, 1); |
2ec9a5e0 TT |
2450 | } |
2451 | ||
1fd400ff | 2452 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2453 | |
74a0d9f6 | 2454 | static void |
12359b5e SM |
2455 | create_signatured_type_table_from_index |
2456 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2457 | struct dwarf2_section_info *section, | |
2458 | const gdb_byte *bytes, | |
2459 | offset_type elements) | |
1fd400ff | 2460 | { |
12359b5e | 2461 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 2462 | |
b2bdb8cf SM |
2463 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2464 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 2465 | |
298e9637 | 2466 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2467 | |
12359b5e | 2468 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2469 | { |
52dc124a | 2470 | struct signatured_type *sig_type; |
9c541725 | 2471 | ULONGEST signature; |
1fd400ff | 2472 | void **slot; |
9c541725 | 2473 | cu_offset type_offset_in_tu; |
1fd400ff | 2474 | |
74a0d9f6 | 2475 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2476 | sect_offset sect_off |
2477 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2478 | type_offset_in_tu | |
2479 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2480 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2481 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2482 | bytes += 3 * 8; | |
2483 | ||
52dc124a | 2484 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2485 | struct signatured_type); |
52dc124a | 2486 | sig_type->signature = signature; |
9c541725 | 2487 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2488 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2489 | sig_type->per_cu.section = section; |
9c541725 | 2490 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2491 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2492 | sig_type->per_cu.v.quick |
1fd400ff TT |
2493 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2494 | struct dwarf2_per_cu_quick_data); | |
2495 | ||
b0b6a987 | 2496 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2497 | *slot = sig_type; |
1fd400ff | 2498 | |
b2bdb8cf | 2499 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
2500 | } |
2501 | ||
b0b6a987 | 2502 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2503 | } |
2504 | ||
927aa2e7 JK |
2505 | /* Create the signatured type hash table from .debug_names. */ |
2506 | ||
2507 | static void | |
2508 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2509 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2510 | const mapped_debug_names &map, |
2511 | struct dwarf2_section_info *section, | |
2512 | struct dwarf2_section_info *abbrev_section) | |
2513 | { | |
ed2dc618 SM |
2514 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2515 | ||
96b79293 TT |
2516 | section->read (objfile); |
2517 | abbrev_section->read (objfile); | |
927aa2e7 | 2518 | |
b2bdb8cf SM |
2519 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2520 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2521 | |
298e9637 | 2522 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2523 | |
2524 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2525 | { | |
2526 | struct signatured_type *sig_type; | |
927aa2e7 | 2527 | void **slot; |
927aa2e7 JK |
2528 | |
2529 | sect_offset sect_off | |
2530 | = (sect_offset) (extract_unsigned_integer | |
2531 | (map.tu_table_reordered + i * map.offset_size, | |
2532 | map.offset_size, | |
2533 | map.dwarf5_byte_order)); | |
2534 | ||
2535 | comp_unit_head cu_header; | |
ed2dc618 SM |
2536 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2537 | abbrev_section, | |
927aa2e7 JK |
2538 | section->buffer + to_underlying (sect_off), |
2539 | rcuh_kind::TYPE); | |
2540 | ||
2541 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2542 | struct signatured_type); | |
2543 | sig_type->signature = cu_header.signature; | |
2544 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2545 | sig_type->per_cu.is_debug_types = 1; | |
2546 | sig_type->per_cu.section = section; | |
2547 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2548 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
2549 | sig_type->per_cu.v.quick |
2550 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2551 | struct dwarf2_per_cu_quick_data); | |
2552 | ||
b0b6a987 | 2553 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2554 | *slot = sig_type; |
2555 | ||
b2bdb8cf | 2556 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2557 | } |
2558 | ||
b0b6a987 | 2559 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2560 | } |
2561 | ||
9291a0cd TT |
2562 | /* Read the address map data from the mapped index, and use it to |
2563 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2564 | |
9291a0cd | 2565 | static void |
ed2dc618 SM |
2566 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2567 | struct mapped_index *index) | |
9291a0cd | 2568 | { |
ed2dc618 | 2569 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 2570 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 2571 | const gdb_byte *iter, *end; |
9291a0cd | 2572 | struct addrmap *mutable_map; |
9291a0cd TT |
2573 | CORE_ADDR baseaddr; |
2574 | ||
8268c778 PA |
2575 | auto_obstack temp_obstack; |
2576 | ||
9291a0cd TT |
2577 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2578 | ||
f00a2de2 PA |
2579 | iter = index->address_table.data (); |
2580 | end = iter + index->address_table.size (); | |
9291a0cd | 2581 | |
b3b3bada | 2582 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2583 | |
2584 | while (iter < end) | |
2585 | { | |
2586 | ULONGEST hi, lo, cu_index; | |
2587 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2588 | iter += 8; | |
2589 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2590 | iter += 8; | |
2591 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2592 | iter += 4; | |
f652bce2 | 2593 | |
24a55014 | 2594 | if (lo > hi) |
f652bce2 | 2595 | { |
b98664d3 | 2596 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2597 | hex_string (lo), hex_string (hi)); |
24a55014 | 2598 | continue; |
f652bce2 | 2599 | } |
24a55014 | 2600 | |
b76e467d | 2601 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 2602 | { |
b98664d3 | 2603 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2604 | (unsigned) cu_index); |
24a55014 | 2605 | continue; |
f652bce2 | 2606 | } |
24a55014 | 2607 | |
79748972 TT |
2608 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2609 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2610 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 2611 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
2612 | } |
2613 | ||
d320c2b5 | 2614 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2615 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2616 | } |
2617 | ||
927aa2e7 JK |
2618 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2619 | populate the objfile's psymtabs_addrmap. */ | |
2620 | ||
2621 | static void | |
ed2dc618 | 2622 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2623 | struct dwarf2_section_info *section) |
2624 | { | |
ed2dc618 | 2625 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
2626 | bfd *abfd = objfile->obfd; |
2627 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 2628 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2629 | |
2630 | auto_obstack temp_obstack; | |
2631 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2632 | ||
2633 | std::unordered_map<sect_offset, | |
2634 | dwarf2_per_cu_data *, | |
2635 | gdb::hash_enum<sect_offset>> | |
2636 | debug_info_offset_to_per_cu; | |
b76e467d | 2637 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 2638 | { |
927aa2e7 JK |
2639 | const auto insertpair |
2640 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2641 | if (!insertpair.second) | |
2642 | { | |
2643 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2644 | "debug_info_offset %s, ignoring .debug_aranges."), |
2645 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2646 | return; |
2647 | } | |
2648 | } | |
2649 | ||
96b79293 | 2650 | section->read (objfile); |
927aa2e7 JK |
2651 | |
2652 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2653 | ||
2654 | const gdb_byte *addr = section->buffer; | |
2655 | ||
2656 | while (addr < section->buffer + section->size) | |
2657 | { | |
2658 | const gdb_byte *const entry_addr = addr; | |
2659 | unsigned int bytes_read; | |
2660 | ||
2661 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2662 | &bytes_read); | |
2663 | addr += bytes_read; | |
2664 | ||
2665 | const gdb_byte *const entry_end = addr + entry_length; | |
2666 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2667 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2668 | if (addr + entry_length > section->buffer + section->size) | |
2669 | { | |
47e3f474 | 2670 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2671 | "length %s exceeds section length %s, " |
2672 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2673 | objfile_name (objfile), |
2674 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2675 | plongest (bytes_read + entry_length), |
2676 | pulongest (section->size)); | |
2677 | return; | |
2678 | } | |
2679 | ||
2680 | /* The version number. */ | |
2681 | const uint16_t version = read_2_bytes (abfd, addr); | |
2682 | addr += 2; | |
2683 | if (version != 2) | |
2684 | { | |
47e3f474 | 2685 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2686 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2687 | objfile_name (objfile), |
2688 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2689 | return; |
2690 | } | |
2691 | ||
2692 | const uint64_t debug_info_offset | |
2693 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2694 | addr += offset_size; | |
2695 | const auto per_cu_it | |
2696 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2697 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2698 | { | |
47e3f474 | 2699 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2700 | "debug_info_offset %s does not exists, " |
2701 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2702 | objfile_name (objfile), |
2703 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2704 | pulongest (debug_info_offset)); |
2705 | return; | |
2706 | } | |
2707 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2708 | ||
2709 | const uint8_t address_size = *addr++; | |
2710 | if (address_size < 1 || address_size > 8) | |
2711 | { | |
47e3f474 | 2712 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2713 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2714 | objfile_name (objfile), |
2715 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2716 | return; |
2717 | } | |
2718 | ||
2719 | const uint8_t segment_selector_size = *addr++; | |
2720 | if (segment_selector_size != 0) | |
2721 | { | |
47e3f474 | 2722 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2723 | "segment_selector_size %u is not supported, " |
2724 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2725 | objfile_name (objfile), |
2726 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2727 | segment_selector_size); |
2728 | return; | |
2729 | } | |
2730 | ||
2731 | /* Must pad to an alignment boundary that is twice the address | |
2732 | size. It is undocumented by the DWARF standard but GCC does | |
2733 | use it. */ | |
2734 | for (size_t padding = ((-(addr - section->buffer)) | |
2735 | & (2 * address_size - 1)); | |
2736 | padding > 0; padding--) | |
2737 | if (*addr++ != 0) | |
2738 | { | |
47e3f474 | 2739 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2740 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2741 | objfile_name (objfile), |
2742 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2743 | return; |
2744 | } | |
2745 | ||
2746 | for (;;) | |
2747 | { | |
2748 | if (addr + 2 * address_size > entry_end) | |
2749 | { | |
47e3f474 | 2750 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2751 | "address list is not properly terminated, " |
2752 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2753 | objfile_name (objfile), |
2754 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2755 | return; |
2756 | } | |
2757 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2758 | dwarf5_byte_order); | |
2759 | addr += address_size; | |
2760 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2761 | dwarf5_byte_order); | |
2762 | addr += address_size; | |
2763 | if (start == 0 && length == 0) | |
2764 | break; | |
2765 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
2766 | { | |
2767 | /* Symbol was eliminated due to a COMDAT group. */ | |
2768 | continue; | |
2769 | } | |
2770 | ULONGEST end = start + length; | |
79748972 TT |
2771 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2772 | - baseaddr); | |
2773 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2774 | - baseaddr); | |
927aa2e7 JK |
2775 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2776 | } | |
2777 | } | |
2778 | ||
d320c2b5 | 2779 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2780 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2781 | } |
2782 | ||
9291a0cd TT |
2783 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2784 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2785 | constant pool and return true. If NAME cannot be found, return |
2786 | false. */ | |
2fdf6df6 | 2787 | |
109483d9 | 2788 | static bool |
9291a0cd TT |
2789 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2790 | offset_type **vec_out) | |
2791 | { | |
0cf03b49 | 2792 | offset_type hash; |
9291a0cd | 2793 | offset_type slot, step; |
559a7a62 | 2794 | int (*cmp) (const char *, const char *); |
9291a0cd | 2795 | |
791afaa2 | 2796 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2797 | if (current_language->la_language == language_cplus |
45280282 IB |
2798 | || current_language->la_language == language_fortran |
2799 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2800 | { |
2801 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2802 | not contain any. */ | |
a8719064 | 2803 | |
72998fb3 | 2804 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2805 | { |
109483d9 | 2806 | without_params = cp_remove_params (name); |
0cf03b49 | 2807 | |
72998fb3 | 2808 | if (without_params != NULL) |
791afaa2 | 2809 | name = without_params.get (); |
0cf03b49 JK |
2810 | } |
2811 | } | |
2812 | ||
559a7a62 | 2813 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2814 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2815 | simulate our NAME being searched is also lowercased. */ |
2816 | hash = mapped_index_string_hash ((index->version == 4 | |
2817 | && case_sensitivity == case_sensitive_off | |
2818 | ? 5 : index->version), | |
2819 | name); | |
2820 | ||
f00a2de2 PA |
2821 | slot = hash & (index->symbol_table.size () - 1); |
2822 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2823 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2824 | |
2825 | for (;;) | |
2826 | { | |
9291a0cd | 2827 | const char *str; |
f00a2de2 PA |
2828 | |
2829 | const auto &bucket = index->symbol_table[slot]; | |
2830 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2831 | return false; |
9291a0cd | 2832 | |
f00a2de2 | 2833 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2834 | if (!cmp (name, str)) |
9291a0cd TT |
2835 | { |
2836 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2837 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2838 | return true; |
9291a0cd TT |
2839 | } |
2840 | ||
f00a2de2 | 2841 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2842 | } |
2843 | } | |
2844 | ||
4485a1c1 SM |
2845 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2846 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2847 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2848 | ok to use deprecated sections. |
2849 | ||
2850 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2851 | out parameters that are filled in with information about the CU and | |
2852 | TU lists in the section. | |
2853 | ||
4485a1c1 | 2854 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2855 | |
d33bc52e | 2856 | static bool |
4485a1c1 SM |
2857 | read_gdb_index_from_buffer (struct objfile *objfile, |
2858 | const char *filename, | |
2859 | bool deprecated_ok, | |
2860 | gdb::array_view<const gdb_byte> buffer, | |
2861 | struct mapped_index *map, | |
2862 | const gdb_byte **cu_list, | |
2863 | offset_type *cu_list_elements, | |
2864 | const gdb_byte **types_list, | |
2865 | offset_type *types_list_elements) | |
2866 | { | |
2867 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2868 | |
9291a0cd | 2869 | /* Version check. */ |
4485a1c1 | 2870 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2871 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2872 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2873 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2874 | indices. */ |
831adc1f | 2875 | if (version < 4) |
481860b3 GB |
2876 | { |
2877 | static int warning_printed = 0; | |
2878 | if (!warning_printed) | |
2879 | { | |
2880 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2881 | filename); |
481860b3 GB |
2882 | warning_printed = 1; |
2883 | } | |
2884 | return 0; | |
2885 | } | |
2886 | /* Index version 4 uses a different hash function than index version | |
2887 | 5 and later. | |
2888 | ||
2889 | Versions earlier than 6 did not emit psymbols for inlined | |
2890 | functions. Using these files will cause GDB not to be able to | |
2891 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2892 | indices unless the user has done |
2893 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2894 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2895 | { |
2896 | static int warning_printed = 0; | |
2897 | if (!warning_printed) | |
2898 | { | |
e615022a DE |
2899 | warning (_("\ |
2900 | Skipping deprecated .gdb_index section in %s.\n\ | |
2901 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2902 | to use the section anyway."), | |
2ec9a5e0 | 2903 | filename); |
481860b3 GB |
2904 | warning_printed = 1; |
2905 | } | |
2906 | return 0; | |
2907 | } | |
796a7ff8 | 2908 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2909 | of the TU (for symbols coming from TUs), |
2910 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2911 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2912 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2913 | These are just performance bugs, and we can't distinguish gdb-generated | |
2914 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2915 | |
481860b3 | 2916 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2917 | longer backward compatible. */ |
796a7ff8 | 2918 | if (version > 8) |
594e8718 | 2919 | return 0; |
9291a0cd | 2920 | |
559a7a62 | 2921 | map->version = version; |
9291a0cd | 2922 | |
4485a1c1 | 2923 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 2924 | |
4485a1c1 | 2925 | int i = 0; |
2ec9a5e0 TT |
2926 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2927 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2928 | / 8); | |
1fd400ff TT |
2929 | ++i; |
2930 | ||
2ec9a5e0 TT |
2931 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2932 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2933 | - MAYBE_SWAP (metadata[i])) | |
2934 | / 8); | |
987d643c | 2935 | ++i; |
1fd400ff | 2936 | |
f00a2de2 PA |
2937 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
2938 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2939 | map->address_table | |
2940 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
2941 | ++i; |
2942 | ||
f00a2de2 PA |
2943 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
2944 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2945 | map->symbol_table | |
2946 | = gdb::array_view<mapped_index::symbol_table_slot> | |
2947 | ((mapped_index::symbol_table_slot *) symbol_table, | |
2948 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 2949 | |
f00a2de2 | 2950 | ++i; |
f9d83a0b | 2951 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 2952 | |
2ec9a5e0 TT |
2953 | return 1; |
2954 | } | |
2955 | ||
4485a1c1 SM |
2956 | /* Callback types for dwarf2_read_gdb_index. */ |
2957 | ||
2958 | typedef gdb::function_view | |
2959 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
2960 | get_gdb_index_contents_ftype; | |
2961 | typedef gdb::function_view | |
2962 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
2963 | get_gdb_index_contents_dwz_ftype; | |
2964 | ||
927aa2e7 | 2965 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
2966 | elements of all the CUs and return 1. Otherwise, return 0. */ |
2967 | ||
2968 | static int | |
4485a1c1 SM |
2969 | dwarf2_read_gdb_index |
2970 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2971 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
2972 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 2973 | { |
2ec9a5e0 TT |
2974 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
2975 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 2976 | struct dwz_file *dwz; |
12359b5e | 2977 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 2978 | |
4485a1c1 SM |
2979 | gdb::array_view<const gdb_byte> main_index_contents |
2980 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
2981 | ||
2982 | if (main_index_contents.empty ()) | |
2983 | return 0; | |
2984 | ||
3063847f | 2985 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
2986 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
2987 | use_deprecated_index_sections, | |
2988 | main_index_contents, map.get (), &cu_list, | |
2989 | &cu_list_elements, &types_list, | |
2990 | &types_list_elements)) | |
2ec9a5e0 TT |
2991 | return 0; |
2992 | ||
0fefef59 | 2993 | /* Don't use the index if it's empty. */ |
3063847f | 2994 | if (map->symbol_table.empty ()) |
0fefef59 DE |
2995 | return 0; |
2996 | ||
2ec9a5e0 TT |
2997 | /* If there is a .dwz file, read it so we can get its CU list as |
2998 | well. */ | |
ed2dc618 | 2999 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3000 | if (dwz != NULL) |
2ec9a5e0 | 3001 | { |
2ec9a5e0 TT |
3002 | struct mapped_index dwz_map; |
3003 | const gdb_byte *dwz_types_ignore; | |
3004 | offset_type dwz_types_elements_ignore; | |
3005 | ||
4485a1c1 SM |
3006 | gdb::array_view<const gdb_byte> dwz_index_content |
3007 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3008 | ||
3009 | if (dwz_index_content.empty ()) | |
3010 | return 0; | |
3011 | ||
3012 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3013 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3014 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3015 | &dwz_list, &dwz_list_elements, |
3016 | &dwz_types_ignore, | |
3017 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3018 | { |
3019 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3020 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3021 | return 0; |
3022 | } | |
3023 | } | |
3024 | ||
12359b5e SM |
3025 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3026 | dwz_list, dwz_list_elements); | |
1fd400ff | 3027 | |
8b70b953 TT |
3028 | if (types_list_elements) |
3029 | { | |
8b70b953 TT |
3030 | /* We can only handle a single .debug_types when we have an |
3031 | index. */ | |
fd5866f6 | 3032 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3033 | return 0; |
3034 | ||
fd5866f6 | 3035 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3036 | |
12359b5e SM |
3037 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3038 | types_list, types_list_elements); | |
8b70b953 | 3039 | } |
9291a0cd | 3040 | |
3063847f | 3041 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3042 | |
3063847f | 3043 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3044 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3045 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3046 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3047 | |
3048 | return 1; | |
3049 | } | |
3050 | ||
dee91e82 | 3051 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3052 | |
dee91e82 DE |
3053 | static void |
3054 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3055 | const gdb_byte *info_ptr, |
3e225074 | 3056 | struct die_info *comp_unit_die) |
9291a0cd | 3057 | { |
dee91e82 | 3058 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3059 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3060 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3061 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3062 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3063 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3064 | struct attribute *attr; |
7b9f3c50 DE |
3065 | void **slot; |
3066 | struct quick_file_names *qfn; | |
9291a0cd | 3067 | |
0186c6a7 DE |
3068 | gdb_assert (! this_cu->is_debug_types); |
3069 | ||
07261596 TT |
3070 | /* Our callers never want to match partial units -- instead they |
3071 | will match the enclosing full CU. */ | |
3072 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3073 | { | |
3074 | this_cu->v.quick->no_file_data = 1; | |
3075 | return; | |
3076 | } | |
3077 | ||
0186c6a7 | 3078 | lh_cu = this_cu; |
7b9f3c50 | 3079 | slot = NULL; |
dee91e82 | 3080 | |
fff8551c | 3081 | line_header_up lh; |
9c541725 | 3082 | sect_offset line_offset {}; |
fff8551c | 3083 | |
dee91e82 | 3084 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3085 | if (attr != nullptr) |
9291a0cd | 3086 | { |
7b9f3c50 DE |
3087 | struct quick_file_names find_entry; |
3088 | ||
9c541725 | 3089 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3090 | |
3091 | /* We may have already read in this line header (TU line header sharing). | |
3092 | If we have we're done. */ | |
094b34ac | 3093 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3094 | find_entry.hash.line_sect_off = line_offset; |
5895093f | 3095 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 DE |
3096 | &find_entry, INSERT); |
3097 | if (*slot != NULL) | |
3098 | { | |
9a3c8263 | 3099 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3100 | return; |
7b9f3c50 DE |
3101 | } |
3102 | ||
3019eac3 | 3103 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3104 | } |
3105 | if (lh == NULL) | |
3106 | { | |
094b34ac | 3107 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3108 | return; |
9291a0cd TT |
3109 | } |
3110 | ||
8d749320 | 3111 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3112 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3113 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3114 | gdb_assert (slot != NULL); |
3115 | *slot = qfn; | |
9291a0cd | 3116 | |
d721ba37 | 3117 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3118 | |
aa391654 TT |
3119 | int offset = 0; |
3120 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3121 | ++offset; | |
3122 | ||
7ba99d21 | 3123 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3124 | qfn->file_names = |
aa391654 TT |
3125 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3126 | if (offset != 0) | |
3127 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3128 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3129 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3130 | fnd.comp_dir).release (); | |
7b9f3c50 | 3131 | qfn->real_names = NULL; |
9291a0cd | 3132 | |
094b34ac | 3133 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3134 | } |
3135 | ||
3136 | /* A helper for the "quick" functions which attempts to read the line | |
3137 | table for THIS_CU. */ | |
3138 | ||
3139 | static struct quick_file_names * | |
e4a48d9d | 3140 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3141 | { |
0186c6a7 DE |
3142 | /* This should never be called for TUs. */ |
3143 | gdb_assert (! this_cu->is_debug_types); | |
3144 | /* Nor type unit groups. */ | |
197400e8 | 3145 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3146 | |
dee91e82 DE |
3147 | if (this_cu->v.quick->file_names != NULL) |
3148 | return this_cu->v.quick->file_names; | |
3149 | /* If we know there is no line data, no point in looking again. */ | |
3150 | if (this_cu->v.quick->no_file_data) | |
3151 | return NULL; | |
3152 | ||
c0ab21c2 TT |
3153 | cutu_reader reader (this_cu); |
3154 | if (!reader.dummy_p) | |
3e225074 | 3155 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3156 | |
3157 | if (this_cu->v.quick->no_file_data) | |
3158 | return NULL; | |
3159 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3160 | } |
3161 | ||
3162 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3163 | real path for a given file name from the line table. */ |
2fdf6df6 | 3164 | |
9291a0cd | 3165 | static const char * |
7b9f3c50 DE |
3166 | dw2_get_real_path (struct objfile *objfile, |
3167 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3168 | { |
7b9f3c50 DE |
3169 | if (qfn->real_names == NULL) |
3170 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3171 | qfn->num_file_names, const char *); |
9291a0cd | 3172 | |
7b9f3c50 | 3173 | if (qfn->real_names[index] == NULL) |
14278e1f | 3174 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3175 | |
7b9f3c50 | 3176 | return qfn->real_names[index]; |
9291a0cd TT |
3177 | } |
3178 | ||
3179 | static struct symtab * | |
3180 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3181 | { | |
ed2dc618 SM |
3182 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3183 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3184 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3185 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3186 | |
43f3e411 DE |
3187 | if (cust == NULL) |
3188 | return NULL; | |
ed2dc618 | 3189 | |
43f3e411 | 3190 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3191 | } |
3192 | ||
7b9f3c50 DE |
3193 | /* Traversal function for dw2_forget_cached_source_info. */ |
3194 | ||
3195 | static int | |
3196 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3197 | { |
7b9f3c50 | 3198 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3199 | |
7b9f3c50 | 3200 | if (file_data->real_names) |
9291a0cd | 3201 | { |
7b9f3c50 | 3202 | int i; |
9291a0cd | 3203 | |
7b9f3c50 | 3204 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3205 | { |
7b9f3c50 DE |
3206 | xfree ((void*) file_data->real_names[i]); |
3207 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3208 | } |
3209 | } | |
7b9f3c50 DE |
3210 | |
3211 | return 1; | |
3212 | } | |
3213 | ||
3214 | static void | |
3215 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3216 | { | |
ed2dc618 SM |
3217 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3218 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3219 | |
5895093f | 3220 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 | 3221 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3222 | } |
3223 | ||
f8eba3c6 TT |
3224 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3225 | the symtabs and calls the iterator. */ | |
3226 | ||
3227 | static int | |
3228 | dw2_map_expand_apply (struct objfile *objfile, | |
3229 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3230 | const char *name, const char *real_path, |
14bc53a8 | 3231 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3232 | { |
43f3e411 | 3233 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3234 | |
3235 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3236 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3237 | return 0; |
3238 | ||
3239 | /* This may expand more than one symtab, and we want to iterate over | |
3240 | all of them. */ | |
58f0c718 | 3241 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3242 | |
14bc53a8 PA |
3243 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3244 | last_made, callback); | |
f8eba3c6 TT |
3245 | } |
3246 | ||
3247 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3248 | ||
14bc53a8 PA |
3249 | static bool |
3250 | dw2_map_symtabs_matching_filename | |
3251 | (struct objfile *objfile, const char *name, const char *real_path, | |
3252 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3253 | { |
c011a4f4 | 3254 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3255 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3256 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3257 | |
848e3e78 DE |
3258 | /* The rule is CUs specify all the files, including those used by |
3259 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3260 | |
b76e467d | 3261 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3262 | { |
3d7bb9d9 | 3263 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3264 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3265 | continue; |
3266 | ||
b76e467d | 3267 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3268 | if (file_data == NULL) |
9291a0cd TT |
3269 | continue; |
3270 | ||
b76e467d | 3271 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3272 | { |
7b9f3c50 | 3273 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3274 | const char *this_real_name; |
9291a0cd | 3275 | |
af529f8f | 3276 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3277 | { |
f5b95b50 | 3278 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3279 | callback)) |
3280 | return true; | |
288e77a7 | 3281 | continue; |
4aac40c8 | 3282 | } |
9291a0cd | 3283 | |
c011a4f4 DE |
3284 | /* Before we invoke realpath, which can get expensive when many |
3285 | files are involved, do a quick comparison of the basenames. */ | |
3286 | if (! basenames_may_differ | |
3287 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3288 | continue; | |
3289 | ||
da235a7c JK |
3290 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3291 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3292 | { |
da235a7c | 3293 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3294 | callback)) |
3295 | return true; | |
288e77a7 | 3296 | continue; |
da235a7c | 3297 | } |
9291a0cd | 3298 | |
da235a7c JK |
3299 | if (real_path != NULL) |
3300 | { | |
af529f8f JK |
3301 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3302 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3303 | if (this_real_name != NULL |
af529f8f | 3304 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3305 | { |
f5b95b50 | 3306 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3307 | callback)) |
3308 | return true; | |
288e77a7 | 3309 | continue; |
9291a0cd TT |
3310 | } |
3311 | } | |
3312 | } | |
3313 | } | |
3314 | ||
14bc53a8 | 3315 | return false; |
9291a0cd TT |
3316 | } |
3317 | ||
da51c347 DE |
3318 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3319 | ||
3320 | struct dw2_symtab_iterator | |
9291a0cd | 3321 | { |
ed2dc618 SM |
3322 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3323 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3324 | /* If set, only look for symbols that match that block. Valid values are |
3325 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3326 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3327 | /* The kind of symbol we're looking for. */ |
3328 | domain_enum domain; | |
3329 | /* The list of CUs from the index entry of the symbol, | |
3330 | or NULL if not found. */ | |
3331 | offset_type *vec; | |
3332 | /* The next element in VEC to look at. */ | |
3333 | int next; | |
3334 | /* The number of elements in VEC, or zero if there is no match. */ | |
3335 | int length; | |
8943b874 DE |
3336 | /* Have we seen a global version of the symbol? |
3337 | If so we can ignore all further global instances. | |
3338 | This is to work around gold/15646, inefficient gold-generated | |
3339 | indices. */ | |
3340 | int global_seen; | |
da51c347 | 3341 | }; |
9291a0cd | 3342 | |
2b79f376 | 3343 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3344 | |
9291a0cd | 3345 | static void |
da51c347 | 3346 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3347 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3348 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3349 | domain_enum domain, |
3350 | const char *name) | |
3351 | { | |
ed2dc618 | 3352 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3353 | iter->block_index = block_index; |
3354 | iter->domain = domain; | |
3355 | iter->next = 0; | |
8943b874 | 3356 | iter->global_seen = 0; |
da51c347 | 3357 | |
3063847f | 3358 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3359 | |
3360 | /* index is NULL if OBJF_READNOW. */ | |
3361 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3362 | iter->length = MAYBE_SWAP (*iter->vec); |
3363 | else | |
3364 | { | |
3365 | iter->vec = NULL; | |
3366 | iter->length = 0; | |
3367 | } | |
3368 | } | |
3369 | ||
3370 | /* Return the next matching CU or NULL if there are no more. */ | |
3371 | ||
3372 | static struct dwarf2_per_cu_data * | |
3373 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3374 | { | |
ed2dc618 SM |
3375 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3376 | ||
da51c347 DE |
3377 | for ( ; iter->next < iter->length; ++iter->next) |
3378 | { | |
3379 | offset_type cu_index_and_attrs = | |
3380 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3381 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3382 | gdb_index_symbol_kind symbol_kind = |
3383 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3384 | /* Only check the symbol attributes if they're present. | |
3385 | Indices prior to version 7 don't record them, | |
3386 | and indices >= 7 may elide them for certain symbols | |
3387 | (gold does this). */ | |
3388 | int attrs_valid = | |
ed2dc618 | 3389 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3390 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3391 | ||
3190f0c6 | 3392 | /* Don't crash on bad data. */ |
b76e467d | 3393 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3394 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3395 | { |
b98664d3 | 3396 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3397 | " [in module %s]"), |
3398 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3399 | continue; |
3400 | } | |
3401 | ||
ff4c9fec | 3402 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3403 | |
da51c347 | 3404 | /* Skip if already read in. */ |
43f3e411 | 3405 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3406 | continue; |
3407 | ||
8943b874 DE |
3408 | /* Check static vs global. */ |
3409 | if (attrs_valid) | |
3410 | { | |
2b79f376 SM |
3411 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3412 | ||
3413 | if (iter->block_index.has_value ()) | |
3414 | { | |
3415 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3416 | ||
3417 | if (is_static != want_static) | |
3418 | continue; | |
3419 | } | |
3420 | ||
8943b874 DE |
3421 | /* Work around gold/15646. */ |
3422 | if (!is_static && iter->global_seen) | |
3423 | continue; | |
3424 | if (!is_static) | |
3425 | iter->global_seen = 1; | |
3426 | } | |
da51c347 DE |
3427 | |
3428 | /* Only check the symbol's kind if it has one. */ | |
3429 | if (attrs_valid) | |
3430 | { | |
3431 | switch (iter->domain) | |
3432 | { | |
3433 | case VAR_DOMAIN: | |
3434 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3435 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3436 | /* Some types are also in VAR_DOMAIN. */ | |
3437 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3438 | continue; | |
3439 | break; | |
3440 | case STRUCT_DOMAIN: | |
3441 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3442 | continue; | |
3443 | break; | |
3444 | case LABEL_DOMAIN: | |
3445 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3446 | continue; | |
3447 | break; | |
59c35742 AB |
3448 | case MODULE_DOMAIN: |
3449 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3450 | continue; | |
3451 | break; | |
da51c347 DE |
3452 | default: |
3453 | break; | |
3454 | } | |
3455 | } | |
3456 | ||
3457 | ++iter->next; | |
3458 | return per_cu; | |
3459 | } | |
3460 | ||
3461 | return NULL; | |
3462 | } | |
3463 | ||
43f3e411 | 3464 | static struct compunit_symtab * |
c7f839cb | 3465 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3466 | const char *name, domain_enum domain) |
9291a0cd | 3467 | { |
43f3e411 | 3468 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3469 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3470 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3471 | |
b5ec771e PA |
3472 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3473 | ||
ed2dc618 SM |
3474 | struct dw2_symtab_iterator iter; |
3475 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3476 | |
2b79f376 | 3477 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3478 | |
ed2dc618 SM |
3479 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3480 | { | |
3481 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 3482 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 3483 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3484 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3485 | |
ed2dc618 SM |
3486 | sym = block_find_symbol (block, name, domain, |
3487 | block_find_non_opaque_type_preferred, | |
3488 | &with_opaque); | |
b2e2f908 | 3489 | |
ed2dc618 SM |
3490 | /* Some caution must be observed with overloaded functions |
3491 | and methods, since the index will not contain any overload | |
3492 | information (but NAME might contain it). */ | |
da51c347 | 3493 | |
ed2dc618 SM |
3494 | if (sym != NULL |
3495 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3496 | return stab; | |
3497 | if (with_opaque != NULL | |
3498 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3499 | stab_best = stab; | |
da51c347 | 3500 | |
ed2dc618 | 3501 | /* Keep looking through other CUs. */ |
9291a0cd | 3502 | } |
9291a0cd | 3503 | |
da51c347 | 3504 | return stab_best; |
9291a0cd TT |
3505 | } |
3506 | ||
3507 | static void | |
3508 | dw2_print_stats (struct objfile *objfile) | |
3509 | { | |
ed2dc618 SM |
3510 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3511 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3512 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3513 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 3514 | int count = 0; |
9291a0cd | 3515 | |
ed2dc618 | 3516 | for (int i = 0; i < total; ++i) |
9291a0cd | 3517 | { |
ff4c9fec | 3518 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3519 | |
43f3e411 | 3520 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3521 | ++count; |
3522 | } | |
e4a48d9d | 3523 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3524 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3525 | } | |
3526 | ||
779bd270 DE |
3527 | /* This dumps minimal information about the index. |
3528 | It is called via "mt print objfiles". | |
3529 | One use is to verify .gdb_index has been loaded by the | |
3530 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3531 | ||
9291a0cd TT |
3532 | static void |
3533 | dw2_dump (struct objfile *objfile) | |
3534 | { | |
ed2dc618 SM |
3535 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3536 | = get_dwarf2_per_objfile (objfile); | |
3537 | ||
779bd270 DE |
3538 | gdb_assert (dwarf2_per_objfile->using_index); |
3539 | printf_filtered (".gdb_index:"); | |
3540 | if (dwarf2_per_objfile->index_table != NULL) | |
3541 | { | |
3542 | printf_filtered (" version %d\n", | |
3543 | dwarf2_per_objfile->index_table->version); | |
3544 | } | |
3545 | else | |
3546 | printf_filtered (" faked for \"readnow\"\n"); | |
3547 | printf_filtered ("\n"); | |
9291a0cd TT |
3548 | } |
3549 | ||
9291a0cd TT |
3550 | static void |
3551 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3552 | const char *func_name) | |
3553 | { | |
ed2dc618 SM |
3554 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3555 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3556 | |
ed2dc618 SM |
3557 | struct dw2_symtab_iterator iter; |
3558 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3559 | |
2b79f376 | 3560 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3561 | |
ed2dc618 | 3562 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 3563 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 3564 | |
9291a0cd TT |
3565 | } |
3566 | ||
3567 | static void | |
3568 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3569 | { | |
ed2dc618 SM |
3570 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3571 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3572 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3573 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 3574 | |
ed2dc618 | 3575 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3576 | { |
ff4c9fec | 3577 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3578 | |
58f0c718 TT |
3579 | /* We don't want to directly expand a partial CU, because if we |
3580 | read it with the wrong language, then assertion failures can | |
3581 | be triggered later on. See PR symtab/23010. So, tell | |
3582 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3583 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
3584 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
3585 | } |
3586 | } | |
3587 | ||
3588 | static void | |
652a8996 JK |
3589 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3590 | const char *fullname) | |
9291a0cd | 3591 | { |
ed2dc618 SM |
3592 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3593 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3594 | |
3595 | /* We don't need to consider type units here. | |
3596 | This is only called for examining code, e.g. expand_line_sal. | |
3597 | There can be an order of magnitude (or more) more type units | |
3598 | than comp units, and we avoid them if we can. */ | |
3599 | ||
b76e467d | 3600 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3601 | { |
3d7bb9d9 | 3602 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3603 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3604 | continue; |
3605 | ||
b76e467d | 3606 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3607 | if (file_data == NULL) |
9291a0cd TT |
3608 | continue; |
3609 | ||
b76e467d | 3610 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3611 | { |
652a8996 JK |
3612 | const char *this_fullname = file_data->file_names[j]; |
3613 | ||
3614 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3615 | { |
58f0c718 | 3616 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
3617 | break; |
3618 | } | |
3619 | } | |
3620 | } | |
3621 | } | |
3622 | ||
9291a0cd | 3623 | static void |
199b4314 TT |
3624 | dw2_map_matching_symbols |
3625 | (struct objfile *objfile, | |
b054970d | 3626 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3627 | int global, |
3628 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3629 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3630 | { |
1aa98955 TV |
3631 | /* Used for Ada. */ |
3632 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3633 | = get_dwarf2_per_objfile (objfile); | |
3634 | ||
3635 | if (dwarf2_per_objfile->index_table != nullptr) | |
3636 | { | |
3637 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3638 | here though if the current language is Ada for a non-Ada objfile | |
3639 | using GNU index. As Ada does not look for non-Ada symbols this | |
3640 | function should just return. */ | |
3641 | return; | |
3642 | } | |
3643 | ||
3644 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3645 | inline psym_map_matching_symbols here, assuming all partial symtabs have | |
3646 | been read in. */ | |
3647 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
3648 | ||
3649 | for (compunit_symtab *cust : objfile->compunits ()) | |
3650 | { | |
3651 | const struct block *block; | |
3652 | ||
3653 | if (cust == NULL) | |
3654 | continue; | |
3655 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3656 | if (!iterate_over_symbols_terminated (block, name, | |
3657 | domain, callback)) | |
3658 | return; | |
3659 | } | |
9291a0cd TT |
3660 | } |
3661 | ||
e1ef7d7a PA |
3662 | /* Starting from a search name, return the string that finds the upper |
3663 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3664 | list. Returns the empty string to indicate that the upper bound is | |
3665 | the end of the list. */ | |
3666 | ||
3667 | static std::string | |
3668 | make_sort_after_prefix_name (const char *search_name) | |
3669 | { | |
3670 | /* When looking to complete "func", we find the upper bound of all | |
3671 | symbols that start with "func" by looking for where we'd insert | |
3672 | the closest string that would follow "func" in lexicographical | |
3673 | order. Usually, that's "func"-with-last-character-incremented, | |
3674 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3675 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3676 | Especially mind the 0xff character, which is a valid character in | |
3677 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3678 | rule out compilers allowing it in identifiers. Note that | |
3679 | conveniently, strcmp/strcasecmp are specified to compare | |
3680 | characters interpreted as unsigned char. So what we do is treat | |
3681 | the whole string as a base 256 number composed of a sequence of | |
3682 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3683 | to 0, and carries 1 to the following more-significant position. | |
3684 | If the very first character in SEARCH_NAME ends up incremented | |
3685 | and carries/overflows, then the upper bound is the end of the | |
3686 | list. The string after the empty string is also the empty | |
3687 | string. | |
3688 | ||
3689 | Some examples of this operation: | |
3690 | ||
3691 | SEARCH_NAME => "+1" RESULT | |
3692 | ||
3693 | "abc" => "abd" | |
3694 | "ab\xff" => "ac" | |
3695 | "\xff" "a" "\xff" => "\xff" "b" | |
3696 | "\xff" => "" | |
3697 | "\xff\xff" => "" | |
3698 | "" => "" | |
3699 | ||
3700 | Then, with these symbols for example: | |
3701 | ||
3702 | func | |
3703 | func1 | |
3704 | fund | |
3705 | ||
3706 | completing "func" looks for symbols between "func" and | |
3707 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3708 | which finds "func" and "func1", but not "fund". | |
3709 | ||
3710 | And with: | |
3711 | ||
3712 | funcÿ (Latin1 'ÿ' [0xff]) | |
3713 | funcÿ1 | |
3714 | fund | |
3715 | ||
3716 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3717 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3718 | ||
3719 | And with: | |
3720 | ||
3721 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3722 | ÿÿ1 | |
3723 | ||
3724 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3725 | the end of the list. | |
3726 | */ | |
3727 | std::string after = search_name; | |
3728 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3729 | after.pop_back (); | |
3730 | if (!after.empty ()) | |
3731 | after.back () = (unsigned char) after.back () + 1; | |
3732 | return after; | |
3733 | } | |
3734 | ||
5c58de74 | 3735 | /* See declaration. */ |
61d96d7e | 3736 | |
5c58de74 PA |
3737 | std::pair<std::vector<name_component>::const_iterator, |
3738 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3739 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3740 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3741 | { |
5c58de74 PA |
3742 | auto *name_cmp |
3743 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3744 | |
3b00ef10 | 3745 | const char *lang_name |
e0802d59 | 3746 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3747 | |
3f563c84 PA |
3748 | /* Comparison function object for lower_bound that matches against a |
3749 | given symbol name. */ | |
3750 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3751 | const char *name) | |
3752 | { | |
5c58de74 | 3753 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3754 | const char *elem_name = elem_qualified + elem.name_offset; |
3755 | return name_cmp (elem_name, name) < 0; | |
3756 | }; | |
3757 | ||
3758 | /* Comparison function object for upper_bound that matches against a | |
3759 | given symbol name. */ | |
3760 | auto lookup_compare_upper = [&] (const char *name, | |
3761 | const name_component &elem) | |
3762 | { | |
5c58de74 | 3763 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3764 | const char *elem_name = elem_qualified + elem.name_offset; |
3765 | return name_cmp (name, elem_name) < 0; | |
3766 | }; | |
3767 | ||
5c58de74 PA |
3768 | auto begin = this->name_components.begin (); |
3769 | auto end = this->name_components.end (); | |
3f563c84 PA |
3770 | |
3771 | /* Find the lower bound. */ | |
3772 | auto lower = [&] () | |
3773 | { | |
3b00ef10 | 3774 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3775 | return begin; |
3776 | else | |
3b00ef10 | 3777 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3778 | } (); |
3779 | ||
3780 | /* Find the upper bound. */ | |
3781 | auto upper = [&] () | |
3782 | { | |
5c58de74 | 3783 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3784 | { |
e1ef7d7a PA |
3785 | /* In completion mode, we want UPPER to point past all |
3786 | symbols names that have the same prefix. I.e., with | |
3787 | these symbols, and completing "func": | |
3788 | ||
3789 | function << lower bound | |
3790 | function1 | |
3791 | other_function << upper bound | |
3792 | ||
3793 | We find the upper bound by looking for the insertion | |
3794 | point of "func"-with-last-character-incremented, | |
3795 | i.e. "fund". */ | |
3b00ef10 | 3796 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3797 | if (after.empty ()) |
3f563c84 | 3798 | return end; |
e6b2f5ef PA |
3799 | return std::lower_bound (lower, end, after.c_str (), |
3800 | lookup_compare_lower); | |
3f563c84 PA |
3801 | } |
3802 | else | |
3b00ef10 | 3803 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3804 | } (); |
3805 | ||
5c58de74 PA |
3806 | return {lower, upper}; |
3807 | } | |
3808 | ||
3809 | /* See declaration. */ | |
3810 | ||
3811 | void | |
44ed8f3e | 3812 | mapped_index_base::build_name_components () |
5c58de74 PA |
3813 | { |
3814 | if (!this->name_components.empty ()) | |
3815 | return; | |
3816 | ||
3817 | this->name_components_casing = case_sensitivity; | |
3818 | auto *name_cmp | |
3819 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3820 | ||
3821 | /* The code below only knows how to break apart components of C++ | |
3822 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3823 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3824 | auto count = this->symbol_name_count (); |
3825 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3826 | { |
44ed8f3e | 3827 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3828 | continue; |
3829 | ||
3830 | const char *name = this->symbol_name_at (idx); | |
3831 | ||
3832 | /* Add each name component to the name component table. */ | |
3833 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3834 | |
3835 | if (strstr (name, "::") != nullptr) | |
3836 | { | |
3837 | for (unsigned int current_len = cp_find_first_component (name); | |
3838 | name[current_len] != '\0'; | |
3839 | current_len += cp_find_first_component (name + current_len)) | |
3840 | { | |
3841 | gdb_assert (name[current_len] == ':'); | |
3842 | this->name_components.push_back ({previous_len, idx}); | |
3843 | /* Skip the '::'. */ | |
3844 | current_len += 2; | |
3845 | previous_len = current_len; | |
3846 | } | |
3847 | } | |
3848 | else | |
5c58de74 | 3849 | { |
3b00ef10 TT |
3850 | /* Handle the Ada encoded (aka mangled) form here. */ |
3851 | for (const char *iter = strstr (name, "__"); | |
3852 | iter != nullptr; | |
3853 | iter = strstr (iter, "__")) | |
3854 | { | |
3855 | this->name_components.push_back ({previous_len, idx}); | |
3856 | iter += 2; | |
3857 | previous_len = iter - name; | |
3858 | } | |
5c58de74 | 3859 | } |
3b00ef10 | 3860 | |
5c58de74 PA |
3861 | this->name_components.push_back ({previous_len, idx}); |
3862 | } | |
3863 | ||
3864 | /* Sort name_components elements by name. */ | |
3865 | auto name_comp_compare = [&] (const name_component &left, | |
3866 | const name_component &right) | |
3867 | { | |
3868 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3869 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3870 | ||
3871 | const char *left_name = left_qualified + left.name_offset; | |
3872 | const char *right_name = right_qualified + right.name_offset; | |
3873 | ||
3874 | return name_cmp (left_name, right_name) < 0; | |
3875 | }; | |
3876 | ||
3877 | std::sort (this->name_components.begin (), | |
3878 | this->name_components.end (), | |
3879 | name_comp_compare); | |
3880 | } | |
3881 | ||
3882 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3883 | mapped_index_base instead of the containing objfile. This is split |
3884 | to a separate function in order to be able to unit test the | |
3885 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3886 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3887 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
3888 | |
3889 | static void | |
3890 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 3891 | (mapped_index_base &index, |
5c58de74 PA |
3892 | const lookup_name_info &lookup_name_in, |
3893 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3894 | enum search_domain kind, | |
3b00ef10 | 3895 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
3896 | { |
3897 | lookup_name_info lookup_name_without_params | |
3898 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3899 | |
3900 | /* Build the symbol name component sorted vector, if we haven't | |
3901 | yet. */ | |
3902 | index.build_name_components (); | |
3903 | ||
3f563c84 PA |
3904 | /* The same symbol may appear more than once in the range though. |
3905 | E.g., if we're looking for symbols that complete "w", and we have | |
3906 | a symbol named "w1::w2", we'll find the two name components for | |
3907 | that same symbol in the range. To be sure we only call the | |
3908 | callback once per symbol, we first collect the symbol name | |
3909 | indexes that matched in a temporary vector and ignore | |
3910 | duplicates. */ | |
3911 | std::vector<offset_type> matches; | |
3f563c84 | 3912 | |
3b00ef10 TT |
3913 | struct name_and_matcher |
3914 | { | |
3915 | symbol_name_matcher_ftype *matcher; | |
3916 | const std::string &name; | |
3917 | ||
3918 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3919 | { |
3b00ef10 TT |
3920 | return matcher == other.matcher && name == other.name; |
3921 | } | |
3922 | }; | |
3923 | ||
3924 | /* A vector holding all the different symbol name matchers, for all | |
3925 | languages. */ | |
3926 | std::vector<name_and_matcher> matchers; | |
3927 | ||
3928 | for (int i = 0; i < nr_languages; i++) | |
3929 | { | |
3930 | enum language lang_e = (enum language) i; | |
3931 | ||
3932 | const language_defn *lang = language_def (lang_e); | |
3933 | symbol_name_matcher_ftype *name_matcher | |
3934 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 3935 | |
3b00ef10 TT |
3936 | name_and_matcher key { |
3937 | name_matcher, | |
3938 | lookup_name_without_params.language_lookup_name (lang_e) | |
3939 | }; | |
3940 | ||
3941 | /* Don't insert the same comparison routine more than once. | |
3942 | Note that we do this linear walk. This is not a problem in | |
3943 | practice because the number of supported languages is | |
3944 | low. */ | |
3945 | if (std::find (matchers.begin (), matchers.end (), key) | |
3946 | != matchers.end ()) | |
9291a0cd | 3947 | continue; |
3b00ef10 TT |
3948 | matchers.push_back (std::move (key)); |
3949 | ||
3950 | auto bounds | |
3951 | = index.find_name_components_bounds (lookup_name_without_params, | |
3952 | lang_e); | |
3953 | ||
3954 | /* Now for each symbol name in range, check to see if we have a name | |
3955 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3956 | ||
3957 | for (; bounds.first != bounds.second; ++bounds.first) | |
3958 | { | |
3959 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
3960 | ||
3961 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3962 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3963 | continue; | |
9291a0cd | 3964 | |
3b00ef10 TT |
3965 | matches.push_back (bounds.first->idx); |
3966 | } | |
3f563c84 PA |
3967 | } |
3968 | ||
3969 | std::sort (matches.begin (), matches.end ()); | |
3970 | ||
3971 | /* Finally call the callback, once per match. */ | |
3972 | ULONGEST prev = -1; | |
3973 | for (offset_type idx : matches) | |
3974 | { | |
3975 | if (prev != idx) | |
3976 | { | |
3b00ef10 TT |
3977 | if (!match_callback (idx)) |
3978 | break; | |
3f563c84 PA |
3979 | prev = idx; |
3980 | } | |
3981 | } | |
3982 | ||
3983 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3984 | (offset_type)-1 are both possible values. */ | |
3985 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
3986 | } | |
3987 | ||
c62446b1 PA |
3988 | #if GDB_SELF_TEST |
3989 | ||
3990 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3991 | ||
a3c5fafd PA |
3992 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3993 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3994 | mapped_index_base interface. Builds an index from the symbol list | |
3995 | passed as parameter to the constructor. */ | |
3996 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
3997 | { |
3998 | public: | |
a3c5fafd PA |
3999 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4000 | : m_symbol_table (symbols) | |
c62446b1 PA |
4001 | {} |
4002 | ||
a3c5fafd | 4003 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4004 | |
a3c5fafd | 4005 | /* Return the number of names in the symbol table. */ |
632e107b | 4006 | size_t symbol_name_count () const override |
c62446b1 | 4007 | { |
a3c5fafd | 4008 | return m_symbol_table.size (); |
c62446b1 PA |
4009 | } |
4010 | ||
a3c5fafd | 4011 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4012 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4013 | { |
4014 | return m_symbol_table[idx]; | |
4015 | } | |
c62446b1 | 4016 | |
a3c5fafd PA |
4017 | private: |
4018 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4019 | }; |
4020 | ||
4021 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4022 | string, to pass to print routines. */ | |
4023 | ||
4024 | static const char * | |
4025 | string_or_null (const char *str) | |
4026 | { | |
4027 | return str != NULL ? str : "<null>"; | |
4028 | } | |
4029 | ||
4030 | /* Check if a lookup_name_info built from | |
4031 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4032 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4033 | matching order. If no match expected, then an empty list is | |
4034 | specified. Returns true on success. On failure prints a warning | |
4035 | indicating the file:line that failed, and returns false. */ | |
4036 | ||
4037 | static bool | |
4038 | check_match (const char *file, int line, | |
4039 | mock_mapped_index &mock_index, | |
4040 | const char *name, symbol_name_match_type match_type, | |
4041 | bool completion_mode, | |
4042 | std::initializer_list<const char *> expected_list) | |
4043 | { | |
4044 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4045 | ||
4046 | bool matched = true; | |
4047 | ||
4048 | auto mismatch = [&] (const char *expected_str, | |
4049 | const char *got) | |
4050 | { | |
4051 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4052 | "expected=\"%s\", got=\"%s\"\n"), | |
4053 | file, line, | |
4054 | (match_type == symbol_name_match_type::FULL | |
4055 | ? "FULL" : "WILD"), | |
4056 | name, string_or_null (expected_str), string_or_null (got)); | |
4057 | matched = false; | |
4058 | }; | |
4059 | ||
4060 | auto expected_it = expected_list.begin (); | |
4061 | auto expected_end = expected_list.end (); | |
4062 | ||
a3c5fafd | 4063 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4064 | NULL, ALL_DOMAIN, |
4065 | [&] (offset_type idx) | |
4066 | { | |
a3c5fafd | 4067 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4068 | const char *expected_str |
4069 | = expected_it == expected_end ? NULL : *expected_it++; | |
4070 | ||
4071 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4072 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4073 | return true; |
c62446b1 PA |
4074 | }); |
4075 | ||
4076 | const char *expected_str | |
4077 | = expected_it == expected_end ? NULL : *expected_it++; | |
4078 | if (expected_str != NULL) | |
4079 | mismatch (expected_str, NULL); | |
4080 | ||
4081 | return matched; | |
4082 | } | |
4083 | ||
4084 | /* The symbols added to the mock mapped_index for testing (in | |
4085 | canonical form). */ | |
4086 | static const char *test_symbols[] = { | |
4087 | "function", | |
4088 | "std::bar", | |
4089 | "std::zfunction", | |
4090 | "std::zfunction2", | |
4091 | "w1::w2", | |
4092 | "ns::foo<char*>", | |
4093 | "ns::foo<int>", | |
4094 | "ns::foo<long>", | |
a20714ff PA |
4095 | "ns2::tmpl<int>::foo2", |
4096 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4097 | |
e1ef7d7a PA |
4098 | /* These are used to check that the increment-last-char in the |
4099 | matching algorithm for completion doesn't match "t1_fund" when | |
4100 | completing "t1_func". */ | |
4101 | "t1_func", | |
4102 | "t1_func1", | |
4103 | "t1_fund", | |
4104 | "t1_fund1", | |
4105 | ||
4106 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4107 | cp-name-parser understands this as a single identifier ("função" | |
4108 | is "function" in PT). */ | |
4109 | u8"u8função", | |
4110 | ||
4111 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4112 | "yfunc\377", | |
4113 | ||
4114 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4115 | "\377", | |
4116 | "\377\377123", | |
4117 | ||
c62446b1 PA |
4118 | /* A name with all sorts of complications. Starts with "z" to make |
4119 | it easier for the completion tests below. */ | |
4120 | #define Z_SYM_NAME \ | |
4121 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4122 | "::tuple<(anonymous namespace)::ui*, " \ | |
4123 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4124 | ||
4125 | Z_SYM_NAME | |
4126 | }; | |
4127 | ||
a3c5fafd PA |
4128 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4129 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4130 | in completion mode. */ | |
5c58de74 PA |
4131 | |
4132 | static bool | |
a3c5fafd | 4133 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4134 | const char *search_name, |
4135 | gdb::array_view<const char *> expected_syms) | |
4136 | { | |
4137 | lookup_name_info lookup_name (search_name, | |
4138 | symbol_name_match_type::FULL, true); | |
4139 | ||
3b00ef10 TT |
4140 | auto bounds = index.find_name_components_bounds (lookup_name, |
4141 | language_cplus); | |
5c58de74 PA |
4142 | |
4143 | size_t distance = std::distance (bounds.first, bounds.second); | |
4144 | if (distance != expected_syms.size ()) | |
4145 | return false; | |
4146 | ||
4147 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4148 | { | |
4149 | auto nc_elem = bounds.first + exp_elem; | |
4150 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4151 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4152 | return false; | |
4153 | } | |
4154 | ||
4155 | return true; | |
4156 | } | |
4157 | ||
4158 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4159 | method. */ | |
4160 | ||
c62446b1 | 4161 | static void |
5c58de74 PA |
4162 | test_mapped_index_find_name_component_bounds () |
4163 | { | |
4164 | mock_mapped_index mock_index (test_symbols); | |
4165 | ||
a3c5fafd | 4166 | mock_index.build_name_components (); |
5c58de74 PA |
4167 | |
4168 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4169 | method in completion mode. */ | |
4170 | { | |
4171 | static const char *expected_syms[] = { | |
4172 | "t1_func", | |
4173 | "t1_func1", | |
5c58de74 PA |
4174 | }; |
4175 | ||
a3c5fafd | 4176 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4177 | "t1_func", expected_syms)); |
4178 | } | |
4179 | ||
4180 | /* Check that the increment-last-char in the name matching algorithm | |
4181 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4182 | { | |
4183 | static const char *expected_syms1[] = { | |
4184 | "\377", | |
4185 | "\377\377123", | |
4186 | }; | |
a3c5fafd | 4187 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4188 | "\377", expected_syms1)); |
4189 | ||
4190 | static const char *expected_syms2[] = { | |
4191 | "\377\377123", | |
4192 | }; | |
a3c5fafd | 4193 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4194 | "\377\377", expected_syms2)); |
4195 | } | |
4196 | } | |
4197 | ||
4198 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4199 | ||
4200 | static void | |
4201 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4202 | { |
4203 | mock_mapped_index mock_index (test_symbols); | |
4204 | ||
4205 | /* We let all tests run until the end even if some fails, for debug | |
4206 | convenience. */ | |
4207 | bool any_mismatch = false; | |
4208 | ||
4209 | /* Create the expected symbols list (an initializer_list). Needed | |
4210 | because lists have commas, and we need to pass them to CHECK, | |
4211 | which is a macro. */ | |
4212 | #define EXPECT(...) { __VA_ARGS__ } | |
4213 | ||
4214 | /* Wrapper for check_match that passes down the current | |
4215 | __FILE__/__LINE__. */ | |
4216 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4217 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4218 | mock_index, \ | |
4219 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4220 | EXPECTED_LIST) | |
4221 | ||
4222 | /* Identity checks. */ | |
4223 | for (const char *sym : test_symbols) | |
4224 | { | |
4225 | /* Should be able to match all existing symbols. */ | |
4226 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4227 | EXPECT (sym)); | |
4228 | ||
4229 | /* Should be able to match all existing symbols with | |
4230 | parameters. */ | |
4231 | std::string with_params = std::string (sym) + "(int)"; | |
4232 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4233 | EXPECT (sym)); | |
4234 | ||
4235 | /* Should be able to match all existing symbols with | |
4236 | parameters and qualifiers. */ | |
4237 | with_params = std::string (sym) + " ( int ) const"; | |
4238 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4239 | EXPECT (sym)); | |
4240 | ||
4241 | /* This should really find sym, but cp-name-parser.y doesn't | |
4242 | know about lvalue/rvalue qualifiers yet. */ | |
4243 | with_params = std::string (sym) + " ( int ) &&"; | |
4244 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4245 | {}); | |
4246 | } | |
4247 | ||
e1ef7d7a PA |
4248 | /* Check that the name matching algorithm for completion doesn't get |
4249 | confused with Latin1 'ÿ' / 0xff. */ | |
4250 | { | |
4251 | static const char str[] = "\377"; | |
4252 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4253 | EXPECT ("\377", "\377\377123")); | |
4254 | } | |
4255 | ||
4256 | /* Check that the increment-last-char in the matching algorithm for | |
4257 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4258 | { | |
4259 | static const char str[] = "t1_func"; | |
4260 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4261 | EXPECT ("t1_func", "t1_func1")); | |
4262 | } | |
4263 | ||
c62446b1 PA |
4264 | /* Check that completion mode works at each prefix of the expected |
4265 | symbol name. */ | |
4266 | { | |
4267 | static const char str[] = "function(int)"; | |
4268 | size_t len = strlen (str); | |
4269 | std::string lookup; | |
4270 | ||
4271 | for (size_t i = 1; i < len; i++) | |
4272 | { | |
4273 | lookup.assign (str, i); | |
4274 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4275 | EXPECT ("function")); | |
4276 | } | |
4277 | } | |
4278 | ||
4279 | /* While "w" is a prefix of both components, the match function | |
4280 | should still only be called once. */ | |
4281 | { | |
4282 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4283 | EXPECT ("w1::w2")); | |
a20714ff PA |
4284 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4285 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4286 | } |
4287 | ||
4288 | /* Same, with a "complicated" symbol. */ | |
4289 | { | |
4290 | static const char str[] = Z_SYM_NAME; | |
4291 | size_t len = strlen (str); | |
4292 | std::string lookup; | |
4293 | ||
4294 | for (size_t i = 1; i < len; i++) | |
4295 | { | |
4296 | lookup.assign (str, i); | |
4297 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4298 | EXPECT (Z_SYM_NAME)); | |
4299 | } | |
4300 | } | |
4301 | ||
4302 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4303 | { | |
4304 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4305 | {}); | |
4306 | } | |
4307 | ||
4308 | /* A complete symbol with parameters matches any overload, since the | |
4309 | index has no overload info. */ | |
4310 | { | |
4311 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4312 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4313 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4314 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4315 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4316 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4317 | } |
4318 | ||
4319 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4320 | template argument list. */ | |
4321 | { | |
4322 | static const char expected[] = "ns::foo<int>"; | |
4323 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4324 | EXPECT (expected)); | |
a20714ff PA |
4325 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4326 | EXPECT (expected)); | |
c62446b1 PA |
4327 | } |
4328 | ||
4329 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4330 | template argument list that includes a pointer. */ | |
4331 | { | |
4332 | static const char expected[] = "ns::foo<char*>"; | |
4333 | /* Try both completion and non-completion modes. */ | |
4334 | static const bool completion_mode[2] = {false, true}; | |
4335 | for (size_t i = 0; i < 2; i++) | |
4336 | { | |
4337 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4338 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4339 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4340 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4341 | |
4342 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4343 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4344 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4345 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4346 | } |
4347 | } | |
4348 | ||
4349 | { | |
4350 | /* Check method qualifiers are ignored. */ | |
4351 | static const char expected[] = "ns::foo<char*>"; | |
4352 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4353 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4354 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4355 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4356 | CHECK_MATCH ("foo < char * > ( int ) const", |
4357 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4358 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4359 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4360 | } |
4361 | ||
4362 | /* Test lookup names that don't match anything. */ | |
4363 | { | |
a20714ff PA |
4364 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4365 | {}); | |
4366 | ||
c62446b1 PA |
4367 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4368 | {}); | |
4369 | } | |
4370 | ||
a20714ff PA |
4371 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4372 | which should not be confused with a parameter list. */ | |
4373 | { | |
4374 | static const char *syms[] = { | |
4375 | "A::B::C", | |
4376 | "B::C", | |
4377 | "C", | |
4378 | "A :: B :: C ( int )", | |
4379 | "B :: C ( int )", | |
4380 | "C ( int )", | |
4381 | }; | |
4382 | ||
4383 | for (const char *s : syms) | |
4384 | { | |
4385 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4386 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4387 | } | |
4388 | } | |
4389 | ||
4390 | { | |
4391 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4392 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4393 | EXPECT (expected)); | |
4394 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4395 | EXPECT (expected)); | |
4396 | } | |
4397 | ||
c62446b1 PA |
4398 | SELF_CHECK (!any_mismatch); |
4399 | ||
4400 | #undef EXPECT | |
4401 | #undef CHECK_MATCH | |
4402 | } | |
4403 | ||
5c58de74 PA |
4404 | static void |
4405 | run_test () | |
4406 | { | |
4407 | test_mapped_index_find_name_component_bounds (); | |
4408 | test_dw2_expand_symtabs_matching_symbol (); | |
4409 | } | |
4410 | ||
c62446b1 PA |
4411 | }} // namespace selftests::dw2_expand_symtabs_matching |
4412 | ||
4413 | #endif /* GDB_SELF_TEST */ | |
4414 | ||
4b514bc8 JK |
4415 | /* If FILE_MATCHER is NULL or if PER_CU has |
4416 | dwarf2_per_cu_quick_data::MARK set (see | |
4417 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4418 | EXPANSION_NOTIFY on it. */ | |
4419 | ||
4420 | static void | |
4421 | dw2_expand_symtabs_matching_one | |
4422 | (struct dwarf2_per_cu_data *per_cu, | |
4423 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4424 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4425 | { | |
4426 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4427 | { | |
4428 | bool symtab_was_null | |
4429 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4430 | ||
58f0c718 | 4431 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4432 | |
4433 | if (expansion_notify != NULL | |
4434 | && symtab_was_null | |
4435 | && per_cu->v.quick->compunit_symtab != NULL) | |
4436 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4437 | } | |
4438 | } | |
4439 | ||
3f563c84 PA |
4440 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4441 | matched, to expand corresponding CUs that were marked. IDX is the | |
4442 | index of the symbol name that matched. */ | |
4443 | ||
4444 | static void | |
4445 | dw2_expand_marked_cus | |
ed2dc618 | 4446 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4447 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4448 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4449 | search_domain kind) | |
4450 | { | |
3f563c84 PA |
4451 | offset_type *vec, vec_len, vec_idx; |
4452 | bool global_seen = false; | |
ed2dc618 | 4453 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4454 | |
61920122 | 4455 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4456 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4457 | vec_len = MAYBE_SWAP (vec[0]); |
4458 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4459 | { | |
61920122 PA |
4460 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4461 | /* This value is only valid for index versions >= 7. */ | |
4462 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4463 | gdb_index_symbol_kind symbol_kind = | |
4464 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4465 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4466 | /* Only check the symbol attributes if they're present. | |
4467 | Indices prior to version 7 don't record them, | |
4468 | and indices >= 7 may elide them for certain symbols | |
4469 | (gold does this). */ | |
4470 | int attrs_valid = | |
4471 | (index.version >= 7 | |
4472 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4473 | ||
4474 | /* Work around gold/15646. */ | |
4475 | if (attrs_valid) | |
9291a0cd | 4476 | { |
61920122 PA |
4477 | if (!is_static && global_seen) |
4478 | continue; | |
4479 | if (!is_static) | |
4480 | global_seen = true; | |
4481 | } | |
3190f0c6 | 4482 | |
61920122 PA |
4483 | /* Only check the symbol's kind if it has one. */ |
4484 | if (attrs_valid) | |
4485 | { | |
4486 | switch (kind) | |
8943b874 | 4487 | { |
61920122 PA |
4488 | case VARIABLES_DOMAIN: |
4489 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4490 | continue; | |
4491 | break; | |
4492 | case FUNCTIONS_DOMAIN: | |
4493 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4494 | continue; |
61920122 PA |
4495 | break; |
4496 | case TYPES_DOMAIN: | |
4497 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4498 | continue; | |
4499 | break; | |
59c35742 AB |
4500 | case MODULES_DOMAIN: |
4501 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4502 | continue; | |
4503 | break; | |
61920122 PA |
4504 | default: |
4505 | break; | |
8943b874 | 4506 | } |
61920122 | 4507 | } |
8943b874 | 4508 | |
61920122 | 4509 | /* Don't crash on bad data. */ |
b76e467d | 4510 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4511 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4512 | { |
b98664d3 | 4513 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4514 | " [in module %s]"), |
4515 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4516 | continue; |
4517 | } | |
4518 | ||
ff4c9fec | 4519 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4520 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4521 | expansion_notify); | |
61920122 PA |
4522 | } |
4523 | } | |
4524 | ||
4b514bc8 JK |
4525 | /* If FILE_MATCHER is non-NULL, set all the |
4526 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4527 | that match FILE_MATCHER. */ | |
4528 | ||
61920122 | 4529 | static void |
4b514bc8 | 4530 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4531 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4532 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4533 | { |
4b514bc8 | 4534 | if (file_matcher == NULL) |
61920122 PA |
4535 | return; |
4536 | ||
4b514bc8 JK |
4537 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4538 | ||
4539 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4540 | htab_eq_pointer, | |
4541 | NULL, xcalloc, xfree)); | |
4542 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4543 | htab_eq_pointer, |
4544 | NULL, xcalloc, xfree)); | |
61920122 | 4545 | |
4b514bc8 JK |
4546 | /* The rule is CUs specify all the files, including those used by |
4547 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4548 | |
b76e467d | 4549 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4550 | { |
927aa2e7 JK |
4551 | QUIT; |
4552 | ||
4553 | per_cu->v.quick->mark = 0; | |
4554 | ||
4555 | /* We only need to look at symtabs not already expanded. */ | |
4556 | if (per_cu->v.quick->compunit_symtab) | |
4557 | continue; | |
4558 | ||
b76e467d | 4559 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4560 | if (file_data == NULL) |
4561 | continue; | |
4562 | ||
4563 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4564 | continue; | |
4565 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4566 | { | |
4567 | per_cu->v.quick->mark = 1; | |
4568 | continue; | |
4569 | } | |
4570 | ||
b76e467d | 4571 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4572 | { |
4573 | const char *this_real_name; | |
4574 | ||
4575 | if (file_matcher (file_data->file_names[j], false)) | |
4576 | { | |
4577 | per_cu->v.quick->mark = 1; | |
4578 | break; | |
4579 | } | |
4580 | ||
4581 | /* Before we invoke realpath, which can get expensive when many | |
4582 | files are involved, do a quick comparison of the basenames. */ | |
4583 | if (!basenames_may_differ | |
4584 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4585 | true)) | |
4586 | continue; | |
4587 | ||
4588 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4589 | if (file_matcher (this_real_name, false)) | |
4590 | { | |
4591 | per_cu->v.quick->mark = 1; | |
4592 | break; | |
4593 | } | |
4594 | } | |
4595 | ||
b76e467d SM |
4596 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4597 | ? visited_found.get () | |
4598 | : visited_not_found.get (), | |
4599 | file_data, INSERT); | |
927aa2e7 JK |
4600 | *slot = file_data; |
4601 | } | |
4602 | } | |
4603 | ||
4604 | static void | |
4605 | dw2_expand_symtabs_matching | |
4606 | (struct objfile *objfile, | |
4607 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4608 | const lookup_name_info &lookup_name, | |
4609 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4610 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4611 | enum search_domain kind) | |
4612 | { | |
ed2dc618 SM |
4613 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4614 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4615 | |
4616 | /* index_table is NULL if OBJF_READNOW. */ | |
4617 | if (!dwarf2_per_objfile->index_table) | |
4618 | return; | |
4619 | ||
ed2dc618 | 4620 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
4621 | |
4622 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
4623 | ||
4624 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
4625 | symbol_matcher, | |
4626 | kind, [&] (offset_type idx) | |
4627 | { | |
ed2dc618 | 4628 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4629 | expansion_notify, kind); |
3b00ef10 | 4630 | return true; |
927aa2e7 JK |
4631 | }); |
4632 | } | |
4633 | ||
4634 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4635 | symtab. */ | |
4636 | ||
4637 | static struct compunit_symtab * | |
4638 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4639 | CORE_ADDR pc) | |
4640 | { | |
4641 | int i; | |
4642 | ||
4643 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4644 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4645 | return cust; | |
4646 | ||
4647 | if (cust->includes == NULL) | |
4648 | return NULL; | |
4649 | ||
4650 | for (i = 0; cust->includes[i]; ++i) | |
4651 | { | |
4652 | struct compunit_symtab *s = cust->includes[i]; | |
4653 | ||
4654 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4655 | if (s != NULL) | |
4656 | return s; | |
4657 | } | |
4658 | ||
4659 | return NULL; | |
4660 | } | |
4661 | ||
4662 | static struct compunit_symtab * | |
4663 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4664 | struct bound_minimal_symbol msymbol, | |
4665 | CORE_ADDR pc, | |
4666 | struct obj_section *section, | |
4667 | int warn_if_readin) | |
4668 | { | |
4669 | struct dwarf2_per_cu_data *data; | |
4670 | struct compunit_symtab *result; | |
4671 | ||
d320c2b5 | 4672 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4673 | return NULL; |
4674 | ||
b3b3bada | 4675 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4676 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4677 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4678 | if (!data) |
4679 | return NULL; | |
4680 | ||
4681 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4682 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
4683 | paddress (get_objfile_arch (objfile), pc)); | |
4684 | ||
4685 | result | |
58f0c718 TT |
4686 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4687 | false), | |
927aa2e7 JK |
4688 | pc); |
4689 | gdb_assert (result != NULL); | |
4690 | return result; | |
4691 | } | |
4692 | ||
4693 | static void | |
4694 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4695 | void *data, int need_fullname) | |
4696 | { | |
ed2dc618 SM |
4697 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4698 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4699 | |
4700 | if (!dwarf2_per_objfile->filenames_cache) | |
4701 | { | |
4702 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4703 | ||
4704 | htab_up visited (htab_create_alloc (10, | |
4705 | htab_hash_pointer, htab_eq_pointer, | |
4706 | NULL, xcalloc, xfree)); | |
4707 | ||
4708 | /* The rule is CUs specify all the files, including those used | |
4709 | by any TU, so there's no need to scan TUs here. We can | |
4710 | ignore file names coming from already-expanded CUs. */ | |
4711 | ||
b76e467d | 4712 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4713 | { |
927aa2e7 JK |
4714 | if (per_cu->v.quick->compunit_symtab) |
4715 | { | |
4716 | void **slot = htab_find_slot (visited.get (), | |
4717 | per_cu->v.quick->file_names, | |
4718 | INSERT); | |
4719 | ||
4720 | *slot = per_cu->v.quick->file_names; | |
4721 | } | |
4722 | } | |
4723 | ||
b76e467d | 4724 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4725 | { |
927aa2e7 JK |
4726 | /* We only need to look at symtabs not already expanded. */ |
4727 | if (per_cu->v.quick->compunit_symtab) | |
4728 | continue; | |
4729 | ||
b76e467d | 4730 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4731 | if (file_data == NULL) |
4732 | continue; | |
4733 | ||
b76e467d | 4734 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4735 | if (*slot) |
4736 | { | |
4737 | /* Already visited. */ | |
4738 | continue; | |
4739 | } | |
4740 | *slot = file_data; | |
4741 | ||
4742 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4743 | { | |
4744 | const char *filename = file_data->file_names[j]; | |
4745 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
4746 | } | |
4747 | } | |
4748 | } | |
4749 | ||
4750 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
4751 | { | |
4752 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4753 | ||
4754 | if (need_fullname) | |
4755 | this_real_name = gdb_realpath (filename); | |
4756 | (*fun) (filename, this_real_name.get (), data); | |
4757 | }); | |
4758 | } | |
4759 | ||
4760 | static int | |
4761 | dw2_has_symbols (struct objfile *objfile) | |
4762 | { | |
4763 | return 1; | |
4764 | } | |
4765 | ||
4766 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4767 | { | |
4768 | dw2_has_symbols, | |
4769 | dw2_find_last_source_symtab, | |
4770 | dw2_forget_cached_source_info, | |
4771 | dw2_map_symtabs_matching_filename, | |
4772 | dw2_lookup_symbol, | |
d3214198 | 4773 | NULL, |
927aa2e7 JK |
4774 | dw2_print_stats, |
4775 | dw2_dump, | |
927aa2e7 JK |
4776 | dw2_expand_symtabs_for_function, |
4777 | dw2_expand_all_symtabs, | |
4778 | dw2_expand_symtabs_with_fullname, | |
4779 | dw2_map_matching_symbols, | |
4780 | dw2_expand_symtabs_matching, | |
4781 | dw2_find_pc_sect_compunit_symtab, | |
4782 | NULL, | |
4783 | dw2_map_symbol_filenames | |
4784 | }; | |
4785 | ||
4786 | /* DWARF-5 debug_names reader. */ | |
4787 | ||
4788 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4789 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4790 | ||
4791 | /* A helper function that reads the .debug_names section in SECTION | |
4792 | and fills in MAP. FILENAME is the name of the file containing the | |
4793 | section; it is used for error reporting. | |
4794 | ||
4795 | Returns true if all went well, false otherwise. */ | |
4796 | ||
4797 | static bool | |
4798 | read_debug_names_from_section (struct objfile *objfile, | |
4799 | const char *filename, | |
4800 | struct dwarf2_section_info *section, | |
4801 | mapped_debug_names &map) | |
4802 | { | |
96b79293 | 4803 | if (section->empty ()) |
927aa2e7 JK |
4804 | return false; |
4805 | ||
4806 | /* Older elfutils strip versions could keep the section in the main | |
4807 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4808 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4809 | return false; |
4810 | ||
96b79293 | 4811 | section->read (objfile); |
927aa2e7 JK |
4812 | |
4813 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
4814 | ||
4815 | const gdb_byte *addr = section->buffer; | |
4816 | ||
96b79293 | 4817 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4818 | |
4819 | unsigned int bytes_read; | |
4820 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4821 | addr += bytes_read; | |
4822 | ||
4823 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4824 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4825 | if (bytes_read + length != section->size) | |
4826 | { | |
4827 | /* There may be multiple per-CU indices. */ | |
4828 | warning (_("Section .debug_names in %s length %s does not match " | |
4829 | "section length %s, ignoring .debug_names."), | |
4830 | filename, plongest (bytes_read + length), | |
4831 | pulongest (section->size)); | |
4832 | return false; | |
4833 | } | |
4834 | ||
4835 | /* The version number. */ | |
4836 | uint16_t version = read_2_bytes (abfd, addr); | |
4837 | addr += 2; | |
4838 | if (version != 5) | |
4839 | { | |
4840 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4841 | "ignoring .debug_names."), | |
4842 | filename, version); | |
4843 | return false; | |
4844 | } | |
4845 | ||
4846 | /* Padding. */ | |
4847 | uint16_t padding = read_2_bytes (abfd, addr); | |
4848 | addr += 2; | |
4849 | if (padding != 0) | |
4850 | { | |
4851 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4852 | "ignoring .debug_names."), | |
4853 | filename, padding); | |
4854 | return false; | |
4855 | } | |
4856 | ||
4857 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4858 | map.cu_count = read_4_bytes (abfd, addr); | |
4859 | addr += 4; | |
4860 | ||
4861 | /* local_type_unit_count - The number of TUs in the local TU | |
4862 | list. */ | |
4863 | map.tu_count = read_4_bytes (abfd, addr); | |
4864 | addr += 4; | |
4865 | ||
4866 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4867 | list. */ | |
4868 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4869 | addr += 4; | |
4870 | if (foreign_tu_count != 0) | |
4871 | { | |
4872 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4873 | "ignoring .debug_names."), | |
4874 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4875 | return false; | |
4876 | } | |
4877 | ||
4878 | /* bucket_count - The number of hash buckets in the hash lookup | |
4879 | table. */ | |
4880 | map.bucket_count = read_4_bytes (abfd, addr); | |
4881 | addr += 4; | |
4882 | ||
4883 | /* name_count - The number of unique names in the index. */ | |
4884 | map.name_count = read_4_bytes (abfd, addr); | |
4885 | addr += 4; | |
4886 | ||
4887 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4888 | table. */ | |
4889 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4890 | addr += 4; | |
4891 | ||
4892 | /* augmentation_string_size - The size in bytes of the augmentation | |
4893 | string. This value is rounded up to a multiple of 4. */ | |
4894 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4895 | addr += 4; | |
4896 | map.augmentation_is_gdb = ((augmentation_string_size | |
4897 | == sizeof (dwarf5_augmentation)) | |
4898 | && memcmp (addr, dwarf5_augmentation, | |
4899 | sizeof (dwarf5_augmentation)) == 0); | |
4900 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4901 | addr += augmentation_string_size; | |
4902 | ||
4903 | /* List of CUs */ | |
4904 | map.cu_table_reordered = addr; | |
4905 | addr += map.cu_count * map.offset_size; | |
4906 | ||
4907 | /* List of Local TUs */ | |
4908 | map.tu_table_reordered = addr; | |
4909 | addr += map.tu_count * map.offset_size; | |
4910 | ||
4911 | /* Hash Lookup Table */ | |
4912 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4913 | addr += map.bucket_count * 4; | |
4914 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4915 | addr += map.name_count * 4; | |
4916 | ||
4917 | /* Name Table */ | |
4918 | map.name_table_string_offs_reordered = addr; | |
4919 | addr += map.name_count * map.offset_size; | |
4920 | map.name_table_entry_offs_reordered = addr; | |
4921 | addr += map.name_count * map.offset_size; | |
4922 | ||
4923 | const gdb_byte *abbrev_table_start = addr; | |
4924 | for (;;) | |
4925 | { | |
927aa2e7 JK |
4926 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4927 | addr += bytes_read; | |
4928 | if (index_num == 0) | |
4929 | break; | |
4930 | ||
4931 | const auto insertpair | |
4932 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4933 | if (!insertpair.second) | |
4934 | { | |
4935 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4936 | "ignoring .debug_names."), | |
4937 | filename, pulongest (index_num)); | |
4938 | return false; | |
4939 | } | |
4940 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4941 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4942 | addr += bytes_read; | |
4943 | ||
4944 | for (;;) | |
4945 | { | |
4946 | mapped_debug_names::index_val::attr attr; | |
4947 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4948 | addr += bytes_read; | |
4949 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4950 | addr += bytes_read; | |
4951 | if (attr.form == DW_FORM_implicit_const) | |
4952 | { | |
4953 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4954 | &bytes_read); | |
4955 | addr += bytes_read; | |
4956 | } | |
4957 | if (attr.dw_idx == 0 && attr.form == 0) | |
4958 | break; | |
4959 | indexval.attr_vec.push_back (std::move (attr)); | |
4960 | } | |
4961 | } | |
4962 | if (addr != abbrev_table_start + abbrev_table_size) | |
4963 | { | |
4964 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4965 | "of size %s vs. written as %u, ignoring .debug_names."), |
4966 | filename, plongest (addr - abbrev_table_start), | |
4967 | abbrev_table_size); | |
927aa2e7 JK |
4968 | return false; |
4969 | } | |
4970 | map.entry_pool = addr; | |
4971 | ||
4972 | return true; | |
4973 | } | |
4974 | ||
4975 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4976 | list. */ | |
4977 | ||
4978 | static void | |
ed2dc618 | 4979 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
4980 | const mapped_debug_names &map, |
4981 | dwarf2_section_info §ion, | |
b76e467d | 4982 | bool is_dwz) |
927aa2e7 JK |
4983 | { |
4984 | sect_offset sect_off_prev; | |
4985 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
4986 | { | |
4987 | sect_offset sect_off_next; | |
4988 | if (i < map.cu_count) | |
4989 | { | |
4990 | sect_off_next | |
4991 | = (sect_offset) (extract_unsigned_integer | |
4992 | (map.cu_table_reordered + i * map.offset_size, | |
4993 | map.offset_size, | |
4994 | map.dwarf5_byte_order)); | |
4995 | } | |
4996 | else | |
4997 | sect_off_next = (sect_offset) section.size; | |
4998 | if (i >= 1) | |
4999 | { | |
5000 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5001 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5002 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5003 | sect_off_prev, length); |
b76e467d | 5004 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5005 | } |
5006 | sect_off_prev = sect_off_next; | |
5007 | } | |
5008 | } | |
5009 | ||
5010 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5011 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5012 | |
5013 | static void | |
ed2dc618 | 5014 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5015 | const mapped_debug_names &map, |
5016 | const mapped_debug_names &dwz_map) | |
5017 | { | |
b76e467d SM |
5018 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5019 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5020 | |
ed2dc618 SM |
5021 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5022 | dwarf2_per_objfile->info, | |
b76e467d | 5023 | false /* is_dwz */); |
927aa2e7 JK |
5024 | |
5025 | if (dwz_map.cu_count == 0) | |
5026 | return; | |
5027 | ||
ed2dc618 SM |
5028 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5029 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5030 | true /* is_dwz */); |
927aa2e7 JK |
5031 | } |
5032 | ||
5033 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5034 | elements of all the CUs and return true. Otherwise, return false. */ | |
5035 | ||
5036 | static bool | |
ed2dc618 | 5037 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5038 | { |
22ca247e TT |
5039 | std::unique_ptr<mapped_debug_names> map |
5040 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5041 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5042 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5043 | |
5044 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5045 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5046 | *map)) |
927aa2e7 JK |
5047 | return false; |
5048 | ||
5049 | /* Don't use the index if it's empty. */ | |
22ca247e | 5050 | if (map->name_count == 0) |
927aa2e7 JK |
5051 | return false; |
5052 | ||
5053 | /* If there is a .dwz file, read it so we can get its CU list as | |
5054 | well. */ | |
ed2dc618 | 5055 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5056 | if (dwz != NULL) |
5057 | { | |
5058 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5059 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5060 | &dwz->debug_names, dwz_map)) |
5061 | { | |
5062 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5063 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5064 | return false; |
5065 | } | |
5066 | } | |
5067 | ||
22ca247e | 5068 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5069 | |
22ca247e | 5070 | if (map->tu_count != 0) |
927aa2e7 JK |
5071 | { |
5072 | /* We can only handle a single .debug_types when we have an | |
5073 | index. */ | |
fd5866f6 | 5074 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5075 | return false; |
5076 | ||
fd5866f6 | 5077 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5078 | |
5079 | create_signatured_type_table_from_debug_names | |
22ca247e | 5080 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5081 | } |
5082 | ||
ed2dc618 SM |
5083 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5084 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5085 | |
22ca247e | 5086 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5087 | dwarf2_per_objfile->using_index = 1; |
5088 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5089 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5090 | |
5091 | return true; | |
5092 | } | |
5093 | ||
927aa2e7 JK |
5094 | /* Type used to manage iterating over all CUs looking for a symbol for |
5095 | .debug_names. */ | |
5096 | ||
5097 | class dw2_debug_names_iterator | |
5098 | { | |
5099 | public: | |
927aa2e7 | 5100 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5101 | gdb::optional<block_enum> block_index, |
5102 | domain_enum domain, | |
927aa2e7 | 5103 | const char *name) |
2b79f376 | 5104 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5105 | m_addr (find_vec_in_debug_names (map, name)) |
5106 | {} | |
5107 | ||
5108 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5109 | search_domain search, uint32_t namei) | |
5110 | : m_map (map), | |
5111 | m_search (search), | |
5112 | m_addr (find_vec_in_debug_names (map, namei)) | |
5113 | {} | |
5114 | ||
3b00ef10 TT |
5115 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5116 | block_enum block_index, domain_enum domain, | |
5117 | uint32_t namei) | |
5118 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5119 | m_addr (find_vec_in_debug_names (map, namei)) | |
5120 | {} | |
5121 | ||
927aa2e7 JK |
5122 | /* Return the next matching CU or NULL if there are no more. */ |
5123 | dwarf2_per_cu_data *next (); | |
5124 | ||
5125 | private: | |
5126 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5127 | const char *name); | |
5128 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5129 | uint32_t namei); | |
5130 | ||
5131 | /* The internalized form of .debug_names. */ | |
5132 | const mapped_debug_names &m_map; | |
5133 | ||
2b79f376 SM |
5134 | /* If set, only look for symbols that match that block. Valid values are |
5135 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5136 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5137 | |
5138 | /* The kind of symbol we're looking for. */ | |
5139 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5140 | const search_domain m_search = ALL_DOMAIN; | |
5141 | ||
5142 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5143 | not found. */ | |
5144 | const gdb_byte *m_addr; | |
5145 | }; | |
5146 | ||
5147 | const char * | |
5148 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5149 | { | |
5150 | const ULONGEST namei_string_offs | |
5151 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5152 | + namei * offset_size), | |
5153 | offset_size, | |
5154 | dwarf5_byte_order); | |
4f44ae6c TT |
5155 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5156 | namei_string_offs); | |
927aa2e7 JK |
5157 | } |
5158 | ||
5159 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5160 | found, return pointer to its pool data. If NAME cannot be found, | |
5161 | return NULL. */ | |
5162 | ||
5163 | const gdb_byte * | |
5164 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5165 | (const mapped_debug_names &map, const char *name) | |
5166 | { | |
5167 | int (*cmp) (const char *, const char *); | |
5168 | ||
54ee4252 | 5169 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5170 | if (current_language->la_language == language_cplus |
5171 | || current_language->la_language == language_fortran | |
5172 | || current_language->la_language == language_d) | |
5173 | { | |
5174 | /* NAME is already canonical. Drop any qualifiers as | |
5175 | .debug_names does not contain any. */ | |
5176 | ||
5177 | if (strchr (name, '(') != NULL) | |
5178 | { | |
54ee4252 | 5179 | without_params = cp_remove_params (name); |
927aa2e7 | 5180 | if (without_params != NULL) |
54ee4252 | 5181 | name = without_params.get (); |
927aa2e7 JK |
5182 | } |
5183 | } | |
5184 | ||
5185 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5186 | ||
5187 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5188 | uint32_t namei | |
5189 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5190 | (map.bucket_table_reordered | |
5191 | + (full_hash % map.bucket_count)), 4, | |
5192 | map.dwarf5_byte_order); | |
5193 | if (namei == 0) | |
5194 | return NULL; | |
5195 | --namei; | |
5196 | if (namei >= map.name_count) | |
5197 | { | |
b98664d3 | 5198 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5199 | "[in module %s]"), |
5200 | namei, map.name_count, | |
ed2dc618 | 5201 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5202 | return NULL; |
5203 | } | |
5204 | ||
5205 | for (;;) | |
5206 | { | |
5207 | const uint32_t namei_full_hash | |
5208 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5209 | (map.hash_table_reordered + namei), 4, | |
5210 | map.dwarf5_byte_order); | |
5211 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5212 | return NULL; | |
5213 | ||
5214 | if (full_hash == namei_full_hash) | |
5215 | { | |
5216 | const char *const namei_string = map.namei_to_name (namei); | |
5217 | ||
5218 | #if 0 /* An expensive sanity check. */ | |
5219 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5220 | { | |
b98664d3 | 5221 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5222 | "[in module %s]"), |
5223 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5224 | return NULL; | |
5225 | } | |
5226 | #endif | |
5227 | ||
5228 | if (cmp (namei_string, name) == 0) | |
5229 | { | |
5230 | const ULONGEST namei_entry_offs | |
5231 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5232 | + namei * map.offset_size), | |
5233 | map.offset_size, map.dwarf5_byte_order); | |
5234 | return map.entry_pool + namei_entry_offs; | |
5235 | } | |
5236 | } | |
5237 | ||
5238 | ++namei; | |
5239 | if (namei >= map.name_count) | |
5240 | return NULL; | |
5241 | } | |
5242 | } | |
5243 | ||
5244 | const gdb_byte * | |
5245 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5246 | (const mapped_debug_names &map, uint32_t namei) | |
5247 | { | |
5248 | if (namei >= map.name_count) | |
5249 | { | |
b98664d3 | 5250 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5251 | "[in module %s]"), |
5252 | namei, map.name_count, | |
ed2dc618 | 5253 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5254 | return NULL; |
5255 | } | |
5256 | ||
5257 | const ULONGEST namei_entry_offs | |
5258 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5259 | + namei * map.offset_size), | |
5260 | map.offset_size, map.dwarf5_byte_order); | |
5261 | return map.entry_pool + namei_entry_offs; | |
5262 | } | |
5263 | ||
5264 | /* See dw2_debug_names_iterator. */ | |
5265 | ||
5266 | dwarf2_per_cu_data * | |
5267 | dw2_debug_names_iterator::next () | |
5268 | { | |
5269 | if (m_addr == NULL) | |
5270 | return NULL; | |
5271 | ||
ed2dc618 SM |
5272 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5273 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5274 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5275 | |
5276 | again: | |
5277 | ||
5278 | unsigned int bytes_read; | |
5279 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5280 | m_addr += bytes_read; | |
5281 | if (abbrev == 0) | |
5282 | return NULL; | |
5283 | ||
5284 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5285 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5286 | { | |
b98664d3 | 5287 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5288 | "[in module %s]"), |
ed2dc618 | 5289 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5290 | return NULL; |
5291 | } | |
5292 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5293 | enum class symbol_linkage { |
5294 | unknown, | |
5295 | static_, | |
5296 | extern_, | |
23c13d42 | 5297 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5298 | dwarf2_per_cu_data *per_cu = NULL; |
5299 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5300 | { | |
5301 | ULONGEST ull; | |
5302 | switch (attr.form) | |
5303 | { | |
5304 | case DW_FORM_implicit_const: | |
5305 | ull = attr.implicit_const; | |
5306 | break; | |
5307 | case DW_FORM_flag_present: | |
5308 | ull = 1; | |
5309 | break; | |
5310 | case DW_FORM_udata: | |
5311 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5312 | m_addr += bytes_read; | |
5313 | break; | |
5314 | default: | |
b98664d3 | 5315 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5316 | dwarf_form_name (attr.form), |
ed2dc618 | 5317 | objfile_name (objfile)); |
927aa2e7 JK |
5318 | return NULL; |
5319 | } | |
5320 | switch (attr.dw_idx) | |
5321 | { | |
5322 | case DW_IDX_compile_unit: | |
5323 | /* Don't crash on bad data. */ | |
b76e467d | 5324 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5325 | { |
b98664d3 | 5326 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5327 | " [in module %s]"), |
5328 | pulongest (ull), | |
5329 | objfile_name (dwarf2_per_objfile->objfile)); | |
5330 | continue; | |
5331 | } | |
ff4c9fec | 5332 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5333 | break; |
8af5c486 JK |
5334 | case DW_IDX_type_unit: |
5335 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5336 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5337 | { |
b98664d3 | 5338 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5339 | " [in module %s]"), |
5340 | pulongest (ull), | |
5341 | objfile_name (dwarf2_per_objfile->objfile)); | |
5342 | continue; | |
5343 | } | |
ff4c9fec | 5344 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5345 | break; |
927aa2e7 JK |
5346 | case DW_IDX_GNU_internal: |
5347 | if (!m_map.augmentation_is_gdb) | |
5348 | break; | |
23c13d42 | 5349 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5350 | break; |
5351 | case DW_IDX_GNU_external: | |
5352 | if (!m_map.augmentation_is_gdb) | |
5353 | break; | |
23c13d42 | 5354 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5355 | break; |
5356 | } | |
5357 | } | |
5358 | ||
5359 | /* Skip if already read in. */ | |
5360 | if (per_cu->v.quick->compunit_symtab) | |
5361 | goto again; | |
5362 | ||
5363 | /* Check static vs global. */ | |
23c13d42 | 5364 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5365 | { |
2b79f376 | 5366 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5367 | const bool symbol_is_static = |
5368 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5369 | if (want_static != symbol_is_static) |
2b79f376 | 5370 | goto again; |
927aa2e7 JK |
5371 | } |
5372 | ||
5373 | /* Match dw2_symtab_iter_next, symbol_kind | |
5374 | and debug_names::psymbol_tag. */ | |
5375 | switch (m_domain) | |
5376 | { | |
5377 | case VAR_DOMAIN: | |
5378 | switch (indexval.dwarf_tag) | |
5379 | { | |
5380 | case DW_TAG_variable: | |
5381 | case DW_TAG_subprogram: | |
5382 | /* Some types are also in VAR_DOMAIN. */ | |
5383 | case DW_TAG_typedef: | |
5384 | case DW_TAG_structure_type: | |
5385 | break; | |
5386 | default: | |
5387 | goto again; | |
5388 | } | |
5389 | break; | |
5390 | case STRUCT_DOMAIN: | |
5391 | switch (indexval.dwarf_tag) | |
5392 | { | |
5393 | case DW_TAG_typedef: | |
5394 | case DW_TAG_structure_type: | |
5395 | break; | |
5396 | default: | |
5397 | goto again; | |
5398 | } | |
5399 | break; | |
5400 | case LABEL_DOMAIN: | |
5401 | switch (indexval.dwarf_tag) | |
5402 | { | |
5403 | case 0: | |
5404 | case DW_TAG_variable: | |
5405 | break; | |
5406 | default: | |
5407 | goto again; | |
5408 | } | |
5409 | break; | |
59c35742 AB |
5410 | case MODULE_DOMAIN: |
5411 | switch (indexval.dwarf_tag) | |
5412 | { | |
5413 | case DW_TAG_module: | |
5414 | break; | |
5415 | default: | |
5416 | goto again; | |
5417 | } | |
5418 | break; | |
927aa2e7 JK |
5419 | default: |
5420 | break; | |
5421 | } | |
5422 | ||
5423 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5424 | debug_names::psymbol_tag. */ | |
5425 | switch (m_search) | |
4b514bc8 | 5426 | { |
927aa2e7 JK |
5427 | case VARIABLES_DOMAIN: |
5428 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5429 | { |
927aa2e7 JK |
5430 | case DW_TAG_variable: |
5431 | break; | |
5432 | default: | |
5433 | goto again; | |
4b514bc8 | 5434 | } |
927aa2e7 JK |
5435 | break; |
5436 | case FUNCTIONS_DOMAIN: | |
5437 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5438 | { |
927aa2e7 JK |
5439 | case DW_TAG_subprogram: |
5440 | break; | |
5441 | default: | |
5442 | goto again; | |
4b514bc8 | 5443 | } |
927aa2e7 JK |
5444 | break; |
5445 | case TYPES_DOMAIN: | |
5446 | switch (indexval.dwarf_tag) | |
5447 | { | |
5448 | case DW_TAG_typedef: | |
5449 | case DW_TAG_structure_type: | |
5450 | break; | |
5451 | default: | |
5452 | goto again; | |
5453 | } | |
5454 | break; | |
59c35742 AB |
5455 | case MODULES_DOMAIN: |
5456 | switch (indexval.dwarf_tag) | |
5457 | { | |
5458 | case DW_TAG_module: | |
5459 | break; | |
5460 | default: | |
5461 | goto again; | |
5462 | } | |
927aa2e7 JK |
5463 | default: |
5464 | break; | |
4b514bc8 | 5465 | } |
927aa2e7 JK |
5466 | |
5467 | return per_cu; | |
4b514bc8 | 5468 | } |
61920122 | 5469 | |
927aa2e7 | 5470 | static struct compunit_symtab * |
c7f839cb | 5471 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5472 | const char *name, domain_enum domain) |
4b514bc8 | 5473 | { |
ed2dc618 SM |
5474 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5475 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5476 | |
927aa2e7 JK |
5477 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5478 | if (!mapp) | |
61920122 | 5479 | { |
927aa2e7 JK |
5480 | /* index is NULL if OBJF_READNOW. */ |
5481 | return NULL; | |
5482 | } | |
5483 | const auto &map = *mapp; | |
9291a0cd | 5484 | |
2b79f376 | 5485 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5486 | |
927aa2e7 JK |
5487 | struct compunit_symtab *stab_best = NULL; |
5488 | struct dwarf2_per_cu_data *per_cu; | |
5489 | while ((per_cu = iter.next ()) != NULL) | |
5490 | { | |
5491 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5492 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5493 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5494 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5495 | |
927aa2e7 JK |
5496 | sym = block_find_symbol (block, name, domain, |
5497 | block_find_non_opaque_type_preferred, | |
5498 | &with_opaque); | |
9703b513 | 5499 | |
927aa2e7 JK |
5500 | /* Some caution must be observed with overloaded functions and |
5501 | methods, since the index will not contain any overload | |
5502 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5503 | |
927aa2e7 | 5504 | if (sym != NULL |
987012b8 | 5505 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5506 | return stab; |
5507 | if (with_opaque != NULL | |
987012b8 | 5508 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5509 | stab_best = stab; |
9703b513 | 5510 | |
927aa2e7 | 5511 | /* Keep looking through other CUs. */ |
9703b513 TT |
5512 | } |
5513 | ||
927aa2e7 | 5514 | return stab_best; |
9703b513 TT |
5515 | } |
5516 | ||
927aa2e7 JK |
5517 | /* This dumps minimal information about .debug_names. It is called |
5518 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5519 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5520 | |
927aa2e7 JK |
5521 | static void |
5522 | dw2_debug_names_dump (struct objfile *objfile) | |
5523 | { | |
ed2dc618 SM |
5524 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5525 | = get_dwarf2_per_objfile (objfile); | |
5526 | ||
927aa2e7 JK |
5527 | gdb_assert (dwarf2_per_objfile->using_index); |
5528 | printf_filtered (".debug_names:"); | |
5529 | if (dwarf2_per_objfile->debug_names_table) | |
5530 | printf_filtered (" exists\n"); | |
5531 | else | |
5532 | printf_filtered (" faked for \"readnow\"\n"); | |
5533 | printf_filtered ("\n"); | |
9291a0cd TT |
5534 | } |
5535 | ||
9291a0cd | 5536 | static void |
927aa2e7 JK |
5537 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5538 | const char *func_name) | |
9291a0cd | 5539 | { |
ed2dc618 SM |
5540 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5541 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5542 | |
927aa2e7 JK |
5543 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5544 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5545 | { |
927aa2e7 | 5546 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5547 | |
2b79f376 | 5548 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5549 | |
927aa2e7 JK |
5550 | struct dwarf2_per_cu_data *per_cu; |
5551 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5552 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5553 | } |
5554 | } | |
24c79950 | 5555 | |
3b00ef10 TT |
5556 | static void |
5557 | dw2_debug_names_map_matching_symbols | |
5558 | (struct objfile *objfile, | |
5559 | const lookup_name_info &name, domain_enum domain, | |
5560 | int global, | |
5561 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5562 | symbol_compare_ftype *ordered_compare) | |
5563 | { | |
5564 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5565 | = get_dwarf2_per_objfile (objfile); | |
5566 | ||
5567 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5568 | if (!dwarf2_per_objfile->debug_names_table) | |
5569 | return; | |
5570 | ||
5571 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5572 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5573 | ||
5574 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5575 | auto matcher = [&] (const char *symname) | |
5576 | { | |
5577 | if (ordered_compare == nullptr) | |
5578 | return true; | |
5579 | return ordered_compare (symname, match_name) == 0; | |
5580 | }; | |
5581 | ||
5582 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5583 | [&] (offset_type namei) | |
5584 | { | |
5585 | /* The name was matched, now expand corresponding CUs that were | |
5586 | marked. */ | |
5587 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5588 | ||
5589 | struct dwarf2_per_cu_data *per_cu; | |
5590 | while ((per_cu = iter.next ()) != NULL) | |
5591 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5592 | return true; | |
5593 | }); | |
5594 | ||
5595 | /* It's a shame we couldn't do this inside the | |
5596 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5597 | that have already been expanded. Instead, this loop matches what | |
5598 | the psymtab code does. */ | |
5599 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5600 | { | |
5601 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5602 | if (cust != nullptr) | |
5603 | { | |
5604 | const struct block *block | |
5605 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5606 | if (!iterate_over_symbols_terminated (block, name, | |
5607 | domain, callback)) | |
5608 | break; | |
5609 | } | |
5610 | } | |
5611 | } | |
5612 | ||
927aa2e7 JK |
5613 | static void |
5614 | dw2_debug_names_expand_symtabs_matching | |
5615 | (struct objfile *objfile, | |
5616 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5617 | const lookup_name_info &lookup_name, | |
5618 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5619 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5620 | enum search_domain kind) | |
5621 | { | |
ed2dc618 SM |
5622 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5623 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5624 | |
927aa2e7 JK |
5625 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5626 | if (!dwarf2_per_objfile->debug_names_table) | |
5627 | return; | |
9291a0cd | 5628 | |
ed2dc618 | 5629 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5630 | |
44ed8f3e | 5631 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5632 | |
44ed8f3e PA |
5633 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
5634 | symbol_matcher, | |
5635 | kind, [&] (offset_type namei) | |
927aa2e7 | 5636 | { |
927aa2e7 JK |
5637 | /* The name was matched, now expand corresponding CUs that were |
5638 | marked. */ | |
5639 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5640 | |
927aa2e7 JK |
5641 | struct dwarf2_per_cu_data *per_cu; |
5642 | while ((per_cu = iter.next ()) != NULL) | |
5643 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5644 | expansion_notify); | |
3b00ef10 | 5645 | return true; |
44ed8f3e | 5646 | }); |
9291a0cd TT |
5647 | } |
5648 | ||
927aa2e7 | 5649 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5650 | { |
5651 | dw2_has_symbols, | |
5652 | dw2_find_last_source_symtab, | |
5653 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5654 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5655 | dw2_debug_names_lookup_symbol, |
d3214198 | 5656 | NULL, |
9291a0cd | 5657 | dw2_print_stats, |
927aa2e7 | 5658 | dw2_debug_names_dump, |
927aa2e7 | 5659 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5660 | dw2_expand_all_symtabs, |
652a8996 | 5661 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5662 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5663 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5664 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5665 | NULL, |
9291a0cd TT |
5666 | dw2_map_symbol_filenames |
5667 | }; | |
5668 | ||
4485a1c1 SM |
5669 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5670 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5671 | ||
5672 | template <typename T> | |
5673 | static gdb::array_view<const gdb_byte> | |
5674 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5675 | { | |
5676 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5677 | ||
96b79293 | 5678 | if (section->empty ()) |
4485a1c1 SM |
5679 | return {}; |
5680 | ||
5681 | /* Older elfutils strip versions could keep the section in the main | |
5682 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5683 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5684 | return {}; |
5685 | ||
96b79293 | 5686 | section->read (obj); |
4485a1c1 | 5687 | |
8bebfcda PA |
5688 | /* dwarf2_section_info::size is a bfd_size_type, while |
5689 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5690 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5691 | is 32-bit. So we need an explicit narrowing conversion here. | |
5692 | This is fine, because it's impossible to allocate or mmap an | |
5693 | array/buffer larger than what size_t can represent. */ | |
5694 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5695 | } |
5696 | ||
87d6a7aa SM |
5697 | /* Lookup the index cache for the contents of the index associated to |
5698 | DWARF2_OBJ. */ | |
5699 | ||
5700 | static gdb::array_view<const gdb_byte> | |
5701 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5702 | { | |
5703 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5704 | if (build_id == nullptr) | |
5705 | return {}; | |
5706 | ||
5707 | return global_index_cache.lookup_gdb_index (build_id, | |
5708 | &dwarf2_obj->index_cache_res); | |
5709 | } | |
5710 | ||
5711 | /* Same as the above, but for DWZ. */ | |
5712 | ||
5713 | static gdb::array_view<const gdb_byte> | |
5714 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5715 | { | |
5716 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5717 | if (build_id == nullptr) | |
5718 | return {}; | |
5719 | ||
5720 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5721 | } | |
5722 | ||
3c0aa29a | 5723 | /* See symfile.h. */ |
9291a0cd | 5724 | |
3c0aa29a PA |
5725 | bool |
5726 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5727 | { |
ed2dc618 SM |
5728 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5729 | = get_dwarf2_per_objfile (objfile); | |
5730 | ||
9291a0cd TT |
5731 | /* If we're about to read full symbols, don't bother with the |
5732 | indices. In this case we also don't care if some other debug | |
5733 | format is making psymtabs, because they are all about to be | |
5734 | expanded anyway. */ | |
5735 | if ((objfile->flags & OBJF_READNOW)) | |
5736 | { | |
9291a0cd | 5737 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5738 | create_all_comp_units (dwarf2_per_objfile); |
5739 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
5740 | dwarf2_per_objfile->quick_file_names_table |
5741 | = create_quick_file_names_table | |
5742 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 5743 | |
b76e467d | 5744 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5745 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 5746 | { |
ff4c9fec | 5747 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 5748 | |
e254ef6a DE |
5749 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
5750 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
5751 | } |
5752 | ||
5753 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5754 | these functions will be no-ops because we will have expanded | |
5755 | all symtabs. */ | |
3c0aa29a PA |
5756 | *index_kind = dw_index_kind::GDB_INDEX; |
5757 | return true; | |
9291a0cd TT |
5758 | } |
5759 | ||
ed2dc618 | 5760 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5761 | { |
5762 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
5763 | return true; | |
5764 | } | |
927aa2e7 | 5765 | |
4485a1c1 SM |
5766 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5767 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
5768 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
5769 | { |
5770 | *index_kind = dw_index_kind::GDB_INDEX; | |
5771 | return true; | |
5772 | } | |
9291a0cd | 5773 | |
87d6a7aa SM |
5774 | /* ... otherwise, try to find the index in the index cache. */ |
5775 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5776 | get_gdb_index_contents_from_cache, | |
5777 | get_gdb_index_contents_from_cache_dwz)) | |
5778 | { | |
5779 | global_index_cache.hit (); | |
5780 | *index_kind = dw_index_kind::GDB_INDEX; | |
5781 | return true; | |
5782 | } | |
5783 | ||
5784 | global_index_cache.miss (); | |
3c0aa29a | 5785 | return false; |
9291a0cd TT |
5786 | } |
5787 | ||
5788 | \f | |
5789 | ||
dce234bc PP |
5790 | /* Build a partial symbol table. */ |
5791 | ||
5792 | void | |
f29dff0a | 5793 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5794 | { |
ed2dc618 SM |
5795 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5796 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5797 | |
6eee24ce | 5798 | init_psymbol_list (objfile, 1024); |
c906108c | 5799 | |
a70b8144 | 5800 | try |
c9bf0622 TT |
5801 | { |
5802 | /* This isn't really ideal: all the data we allocate on the | |
5803 | objfile's obstack is still uselessly kept around. However, | |
5804 | freeing it seems unsafe. */ | |
906768f9 | 5805 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5806 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5807 | psymtabs.keep (); |
87d6a7aa SM |
5808 | |
5809 | /* (maybe) store an index in the cache. */ | |
5810 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5811 | } |
230d2906 | 5812 | catch (const gdb_exception_error &except) |
492d29ea PA |
5813 | { |
5814 | exception_print (gdb_stderr, except); | |
5815 | } | |
c906108c | 5816 | } |
c906108c | 5817 | |
3b80fe9b DE |
5818 | /* Find the base address of the compilation unit for range lists and |
5819 | location lists. It will normally be specified by DW_AT_low_pc. | |
5820 | In DWARF-3 draft 4, the base address could be overridden by | |
5821 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5822 | compilation units with discontinuous ranges. */ | |
5823 | ||
5824 | static void | |
5825 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5826 | { | |
5827 | struct attribute *attr; | |
5828 | ||
2b24b6e4 | 5829 | cu->base_address.reset (); |
3b80fe9b DE |
5830 | |
5831 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5832 | if (attr != nullptr) |
2b24b6e4 | 5833 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5834 | else |
5835 | { | |
5836 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5837 | if (attr != nullptr) |
2b24b6e4 | 5838 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5839 | } |
5840 | } | |
5841 | ||
36586728 TT |
5842 | /* Helper function that returns the proper abbrev section for |
5843 | THIS_CU. */ | |
5844 | ||
5845 | static struct dwarf2_section_info * | |
5846 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5847 | { | |
5848 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 5849 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
5850 | |
5851 | if (this_cu->is_dwz) | |
ed2dc618 | 5852 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
5853 | else |
5854 | abbrev = &dwarf2_per_objfile->abbrev; | |
5855 | ||
5856 | return abbrev; | |
5857 | } | |
5858 | ||
f4dc4d17 DE |
5859 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5860 | ||
5861 | static sect_offset | |
ed2dc618 SM |
5862 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5863 | struct dwarf2_section_info *section, | |
9c541725 | 5864 | sect_offset sect_off) |
f4dc4d17 | 5865 | { |
96b79293 | 5866 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5867 | const gdb_byte *info_ptr; |
ac298888 | 5868 | unsigned int initial_length_size, offset_size; |
43988095 | 5869 | uint16_t version; |
f4dc4d17 | 5870 | |
96b79293 | 5871 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 5872 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5873 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5874 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5875 | info_ptr += initial_length_size; |
5876 | ||
5877 | version = read_2_bytes (abfd, info_ptr); | |
5878 | info_ptr += 2; | |
5879 | if (version >= 5) | |
5880 | { | |
5881 | /* Skip unit type and address size. */ | |
5882 | info_ptr += 2; | |
5883 | } | |
5884 | ||
24aa364d | 5885 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5886 | } |
5887 | ||
b83470bf TT |
5888 | /* A partial symtab that is used only for include files. */ |
5889 | struct dwarf2_include_psymtab : public partial_symtab | |
5890 | { | |
5891 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
5892 | : partial_symtab (filename, objfile) | |
5893 | { | |
5894 | } | |
5895 | ||
5896 | void read_symtab (struct objfile *objfile) override | |
5897 | { | |
5898 | expand_psymtab (objfile); | |
5899 | } | |
5900 | ||
5901 | void expand_psymtab (struct objfile *objfile) override | |
5902 | { | |
5903 | if (m_readin) | |
5904 | return; | |
5905 | /* It's an include file, no symbols to read for it. | |
5906 | Everything is in the parent symtab. */ | |
48993951 | 5907 | expand_dependencies (objfile); |
b83470bf TT |
5908 | m_readin = true; |
5909 | } | |
5910 | ||
5911 | bool readin_p () const override | |
5912 | { | |
5913 | return m_readin; | |
5914 | } | |
5915 | ||
5916 | struct compunit_symtab *get_compunit_symtab () const override | |
5917 | { | |
5918 | return nullptr; | |
5919 | } | |
5920 | ||
5921 | private: | |
5922 | ||
5923 | bool m_readin = false; | |
5924 | }; | |
5925 | ||
aaa75496 JB |
5926 | /* Allocate a new partial symtab for file named NAME and mark this new |
5927 | partial symtab as being an include of PST. */ | |
5928 | ||
5929 | static void | |
891813be | 5930 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
5931 | struct objfile *objfile) |
5932 | { | |
b83470bf | 5933 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 5934 | |
fbd9ab74 JK |
5935 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
5936 | { | |
5937 | /* It shares objfile->objfile_obstack. */ | |
5938 | subpst->dirname = pst->dirname; | |
5939 | } | |
5940 | ||
a9342b62 | 5941 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
5942 | subpst->dependencies[0] = pst; |
5943 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
5944 | } |
5945 | ||
5946 | /* Read the Line Number Program data and extract the list of files | |
5947 | included by the source file represented by PST. Build an include | |
d85a05f0 | 5948 | partial symtab for each of these included files. */ |
aaa75496 JB |
5949 | |
5950 | static void | |
5951 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 5952 | struct die_info *die, |
891813be | 5953 | dwarf2_psymtab *pst) |
aaa75496 | 5954 | { |
fff8551c | 5955 | line_header_up lh; |
d85a05f0 | 5956 | struct attribute *attr; |
aaa75496 | 5957 | |
d85a05f0 | 5958 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 5959 | if (attr != nullptr) |
9c541725 | 5960 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
5961 | if (lh == NULL) |
5962 | return; /* No linetable, so no includes. */ | |
5963 | ||
79748972 TT |
5964 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
5965 | that we pass in the raw text_low here; that is ok because we're | |
5966 | only decoding the line table to make include partial symtabs, and | |
5967 | so the addresses aren't really used. */ | |
4ae976d1 | 5968 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 5969 | pst->raw_text_low (), 1); |
aaa75496 JB |
5970 | } |
5971 | ||
348e048f | 5972 | static hashval_t |
52dc124a | 5973 | hash_signatured_type (const void *item) |
348e048f | 5974 | { |
9a3c8263 SM |
5975 | const struct signatured_type *sig_type |
5976 | = (const struct signatured_type *) item; | |
9a619af0 | 5977 | |
348e048f | 5978 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 5979 | return sig_type->signature; |
348e048f DE |
5980 | } |
5981 | ||
5982 | static int | |
52dc124a | 5983 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 5984 | { |
9a3c8263 SM |
5985 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
5986 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 5987 | |
348e048f DE |
5988 | return lhs->signature == rhs->signature; |
5989 | } | |
5990 | ||
1fd400ff TT |
5991 | /* Allocate a hash table for signatured types. */ |
5992 | ||
b0b6a987 | 5993 | static htab_up |
298e9637 | 5994 | allocate_signatured_type_table () |
1fd400ff | 5995 | { |
b0b6a987 TT |
5996 | return htab_up (htab_create_alloc (41, |
5997 | hash_signatured_type, | |
5998 | eq_signatured_type, | |
5999 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6000 | } |
6001 | ||
d467dd73 | 6002 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6003 | |
6004 | static int | |
d467dd73 | 6005 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6006 | { |
9a3c8263 | 6007 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6008 | std::vector<signatured_type *> *all_type_units |
6009 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6010 | |
b2bdb8cf | 6011 | all_type_units->push_back (sigt); |
1fd400ff TT |
6012 | |
6013 | return 1; | |
6014 | } | |
6015 | ||
78d4d2c5 | 6016 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6017 | and fill them into TYPES_HTAB. It will process only type units, |
6018 | therefore DW_UT_type. */ | |
c88ee1f0 | 6019 | |
78d4d2c5 | 6020 | static void |
ed2dc618 SM |
6021 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6022 | struct dwo_file *dwo_file, | |
b0b6a987 | 6023 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6024 | rcuh_kind section_kind) |
348e048f | 6025 | { |
3019eac3 | 6026 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6027 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6028 | bfd *abfd; |
6029 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6030 | |
4bdcc0c1 DE |
6031 | abbrev_section = (dwo_file != NULL |
6032 | ? &dwo_file->sections.abbrev | |
6033 | : &dwarf2_per_objfile->abbrev); | |
6034 | ||
b4f54984 | 6035 | if (dwarf_read_debug) |
43988095 | 6036 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6037 | section->get_name (), |
6038 | abbrev_section->get_file_name ()); | |
09406207 | 6039 | |
96b79293 | 6040 | section->read (objfile); |
78d4d2c5 | 6041 | info_ptr = section->buffer; |
348e048f | 6042 | |
78d4d2c5 JK |
6043 | if (info_ptr == NULL) |
6044 | return; | |
348e048f | 6045 | |
78d4d2c5 JK |
6046 | /* We can't set abfd until now because the section may be empty or |
6047 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6048 | abfd = section->get_bfd_owner (); |
348e048f | 6049 | |
c0ab21c2 TT |
6050 | /* We don't use cutu_reader here because we don't need to read |
6051 | any dies: the signature is in the header. */ | |
3019eac3 | 6052 | |
78d4d2c5 JK |
6053 | end_ptr = info_ptr + section->size; |
6054 | while (info_ptr < end_ptr) | |
6055 | { | |
78d4d2c5 JK |
6056 | struct signatured_type *sig_type; |
6057 | struct dwo_unit *dwo_tu; | |
6058 | void **slot; | |
6059 | const gdb_byte *ptr = info_ptr; | |
6060 | struct comp_unit_head header; | |
6061 | unsigned int length; | |
8b70b953 | 6062 | |
9c541725 | 6063 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6064 | |
a49dd8dd JK |
6065 | /* Initialize it due to a false compiler warning. */ |
6066 | header.signature = -1; | |
9c541725 | 6067 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6068 | |
78d4d2c5 JK |
6069 | /* We need to read the type's signature in order to build the hash |
6070 | table, but we don't need anything else just yet. */ | |
348e048f | 6071 | |
ed2dc618 | 6072 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6073 | abbrev_section, ptr, section_kind); |
348e048f | 6074 | |
4057dfde | 6075 | length = header.get_length (); |
6caca83c | 6076 | |
78d4d2c5 JK |
6077 | /* Skip dummy type units. */ |
6078 | if (ptr >= info_ptr + length | |
43988095 JK |
6079 | || peek_abbrev_code (abfd, ptr) == 0 |
6080 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6081 | { |
6082 | info_ptr += length; | |
6083 | continue; | |
6084 | } | |
dee91e82 | 6085 | |
78d4d2c5 JK |
6086 | if (types_htab == NULL) |
6087 | { | |
6088 | if (dwo_file) | |
298e9637 | 6089 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6090 | else |
298e9637 | 6091 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6092 | } |
8b70b953 | 6093 | |
78d4d2c5 JK |
6094 | if (dwo_file) |
6095 | { | |
6096 | sig_type = NULL; | |
6097 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6098 | struct dwo_unit); | |
6099 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6100 | dwo_tu->signature = header.signature; |
9c541725 | 6101 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6102 | dwo_tu->section = section; |
9c541725 | 6103 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6104 | dwo_tu->length = length; |
6105 | } | |
6106 | else | |
6107 | { | |
6108 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6109 | The real type_offset is in the DWO file. */ | |
6110 | dwo_tu = NULL; | |
6111 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6112 | struct signatured_type); | |
43988095 | 6113 | sig_type->signature = header.signature; |
9c541725 | 6114 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6115 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6116 | sig_type->per_cu.is_debug_types = 1; |
6117 | sig_type->per_cu.section = section; | |
9c541725 | 6118 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6119 | sig_type->per_cu.length = length; |
6120 | } | |
6121 | ||
b0b6a987 | 6122 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6123 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6124 | INSERT); | |
6125 | gdb_assert (slot != NULL); | |
6126 | if (*slot != NULL) | |
6127 | { | |
9c541725 | 6128 | sect_offset dup_sect_off; |
0349ea22 | 6129 | |
3019eac3 DE |
6130 | if (dwo_file) |
6131 | { | |
78d4d2c5 JK |
6132 | const struct dwo_unit *dup_tu |
6133 | = (const struct dwo_unit *) *slot; | |
6134 | ||
9c541725 | 6135 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6136 | } |
6137 | else | |
6138 | { | |
78d4d2c5 JK |
6139 | const struct signatured_type *dup_tu |
6140 | = (const struct signatured_type *) *slot; | |
6141 | ||
9c541725 | 6142 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6143 | } |
8b70b953 | 6144 | |
b98664d3 | 6145 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6146 | " the entry at offset %s, signature %s"), |
6147 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6148 | hex_string (header.signature)); |
78d4d2c5 JK |
6149 | } |
6150 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6151 | |
78d4d2c5 | 6152 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6153 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6154 | sect_offset_str (sect_off), | |
43988095 | 6155 | hex_string (header.signature)); |
3019eac3 | 6156 | |
78d4d2c5 JK |
6157 | info_ptr += length; |
6158 | } | |
6159 | } | |
3019eac3 | 6160 | |
78d4d2c5 JK |
6161 | /* Create the hash table of all entries in the .debug_types |
6162 | (or .debug_types.dwo) section(s). | |
6163 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6164 | otherwise it is NULL. | |
b3c8eb43 | 6165 | |
78d4d2c5 | 6166 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6167 | |
78d4d2c5 | 6168 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6169 | |
78d4d2c5 | 6170 | static void |
ed2dc618 SM |
6171 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6172 | struct dwo_file *dwo_file, | |
fd5866f6 | 6173 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6174 | htab_up &types_htab) |
78d4d2c5 | 6175 | { |
fd5866f6 SM |
6176 | for (dwarf2_section_info §ion : type_sections) |
6177 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6178 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6179 | } |
6180 | ||
6181 | /* Create the hash table of all entries in the .debug_types section, | |
6182 | and initialize all_type_units. | |
6183 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6184 | otherwise non-zero. */ | |
6185 | ||
6186 | static int | |
ed2dc618 | 6187 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6188 | { |
b0b6a987 | 6189 | htab_up types_htab; |
3019eac3 | 6190 | |
ed2dc618 SM |
6191 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6192 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6193 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6194 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6195 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6196 | if (types_htab == NULL) |
6197 | { | |
6198 | dwarf2_per_objfile->signatured_types = NULL; | |
6199 | return 0; | |
6200 | } | |
6201 | ||
b0b6a987 | 6202 | dwarf2_per_objfile->signatured_types = std::move (types_htab); |
348e048f | 6203 | |
b2bdb8cf | 6204 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
b0b6a987 TT |
6205 | dwarf2_per_objfile->all_type_units.reserve |
6206 | (htab_elements (dwarf2_per_objfile->signatured_types.get ())); | |
b2bdb8cf | 6207 | |
b0b6a987 TT |
6208 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types.get (), |
6209 | add_signatured_type_cu_to_table, | |
b2bdb8cf | 6210 | &dwarf2_per_objfile->all_type_units); |
1fd400ff | 6211 | |
348e048f DE |
6212 | return 1; |
6213 | } | |
6214 | ||
6aa5f3a6 DE |
6215 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6216 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6217 | Otherwise we find one. */ | |
6218 | ||
6219 | static struct signatured_type * | |
ed2dc618 SM |
6220 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6221 | void **slot) | |
6aa5f3a6 DE |
6222 | { |
6223 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6224 | |
b2bdb8cf SM |
6225 | if (dwarf2_per_objfile->all_type_units.size () |
6226 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6227 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6228 | |
b2bdb8cf SM |
6229 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6230 | struct signatured_type); | |
6231 | ||
6232 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6233 | sig_type->signature = sig; |
6234 | sig_type->per_cu.is_debug_types = 1; | |
6235 | if (dwarf2_per_objfile->using_index) | |
6236 | { | |
6237 | sig_type->per_cu.v.quick = | |
6238 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6239 | struct dwarf2_per_cu_quick_data); | |
6240 | } | |
6241 | ||
6242 | if (slot == NULL) | |
6243 | { | |
b0b6a987 | 6244 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 DE |
6245 | sig_type, INSERT); |
6246 | } | |
6247 | gdb_assert (*slot == NULL); | |
6248 | *slot = sig_type; | |
6249 | /* The rest of sig_type must be filled in by the caller. */ | |
6250 | return sig_type; | |
6251 | } | |
6252 | ||
a2ce51a0 DE |
6253 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6254 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6255 | ||
6256 | static void | |
ed2dc618 | 6257 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6258 | struct signatured_type *sig_entry, |
6259 | struct dwo_unit *dwo_entry) | |
6260 | { | |
7ee85ab1 | 6261 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6262 | gdb_assert (! sig_entry->per_cu.queued); |
6263 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6264 | if (dwarf2_per_objfile->using_index) |
6265 | { | |
6266 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6267 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6268 | } |
6269 | else | |
6270 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6271 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6272 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6273 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6274 | gdb_assert (sig_entry->dwo_unit == NULL); |
6275 | ||
6276 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6277 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6278 | sig_entry->per_cu.length = dwo_entry->length; |
6279 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6280 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6281 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6282 | sig_entry->dwo_unit = dwo_entry; | |
6283 | } | |
6284 | ||
6285 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6286 | If we haven't read the TU yet, create the signatured_type data structure |
6287 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6288 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6289 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6290 | containing that CU. Otherwise we could end up reading several other DWO | |
6291 | files (due to comdat folding) to process the transitive closure of all the | |
6292 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6293 | type signature that it needs. | |
a2ce51a0 DE |
6294 | We only do this for .gdb_index because in the psymtab case we already have |
6295 | to read all the DWOs to build the type unit groups. */ | |
6296 | ||
6297 | static struct signatured_type * | |
6298 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6299 | { | |
518817b3 SM |
6300 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6301 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6302 | struct dwo_file *dwo_file; |
6303 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6304 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6305 | void **slot; |
a2ce51a0 DE |
6306 | |
6307 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6308 | ||
6aa5f3a6 DE |
6309 | /* If TU skeletons have been removed then we may not have read in any |
6310 | TUs yet. */ | |
6311 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6312 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 DE |
6313 | |
6314 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6315 | Use the global signatured_types array to do our own comdat-folding |
6316 | of types. If this is the first time we're reading this TU, and | |
6317 | the TU has an entry in .gdb_index, replace the recorded data from | |
6318 | .gdb_index with this TU. */ | |
a2ce51a0 | 6319 | |
a2ce51a0 | 6320 | find_sig_entry.signature = sig; |
b0b6a987 | 6321 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6322 | &find_sig_entry, INSERT); |
9a3c8263 | 6323 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6324 | |
6325 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6326 | read. Don't reassign the global entry to point to this DWO if that's |
6327 | the case. Also note that if the TU is already being read, it may not | |
6328 | have come from a DWO, the program may be a mix of Fission-compiled | |
6329 | code and non-Fission-compiled code. */ | |
6330 | ||
6331 | /* Have we already tried to read this TU? | |
6332 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6333 | needn't exist in the global table yet). */ | |
6334 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6335 | return sig_entry; |
6336 | ||
6aa5f3a6 DE |
6337 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6338 | dwo_unit of the TU itself. */ | |
6339 | dwo_file = cu->dwo_unit->dwo_file; | |
6340 | ||
a2ce51a0 DE |
6341 | /* Ok, this is the first time we're reading this TU. */ |
6342 | if (dwo_file->tus == NULL) | |
6343 | return NULL; | |
6344 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6345 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6346 | &find_dwo_entry); | |
a2ce51a0 DE |
6347 | if (dwo_entry == NULL) |
6348 | return NULL; | |
6349 | ||
6aa5f3a6 DE |
6350 | /* If the global table doesn't have an entry for this TU, add one. */ |
6351 | if (sig_entry == NULL) | |
ed2dc618 | 6352 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6353 | |
ed2dc618 | 6354 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6355 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6356 | return sig_entry; |
6357 | } | |
6358 | ||
a2ce51a0 DE |
6359 | /* Subroutine of lookup_signatured_type. |
6360 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6361 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6362 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6363 | |
6364 | static struct signatured_type * | |
6365 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6366 | { | |
518817b3 SM |
6367 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6368 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6369 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6370 | struct dwo_unit *dwo_entry; |
6371 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6372 | void **slot; |
a2ce51a0 DE |
6373 | |
6374 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6375 | gdb_assert (dwp_file != NULL); | |
6376 | ||
6aa5f3a6 DE |
6377 | /* If TU skeletons have been removed then we may not have read in any |
6378 | TUs yet. */ | |
6379 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6380 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 | 6381 | |
6aa5f3a6 | 6382 | find_sig_entry.signature = sig; |
b0b6a987 | 6383 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6384 | &find_sig_entry, INSERT); |
9a3c8263 | 6385 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6386 | |
6387 | /* Have we already tried to read this TU? | |
6388 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6389 | needn't exist in the global table yet). */ | |
6390 | if (sig_entry != NULL) | |
6391 | return sig_entry; | |
6392 | ||
a2ce51a0 DE |
6393 | if (dwp_file->tus == NULL) |
6394 | return NULL; | |
ed2dc618 | 6395 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6396 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6397 | if (dwo_entry == NULL) |
6398 | return NULL; | |
6399 | ||
ed2dc618 SM |
6400 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6401 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6402 | |
a2ce51a0 DE |
6403 | return sig_entry; |
6404 | } | |
6405 | ||
380bca97 | 6406 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6407 | Returns NULL if signature SIG is not present in the table. |
6408 | It is up to the caller to complain about this. */ | |
348e048f DE |
6409 | |
6410 | static struct signatured_type * | |
a2ce51a0 | 6411 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6412 | { |
518817b3 SM |
6413 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6414 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6415 | |
a2ce51a0 DE |
6416 | if (cu->dwo_unit |
6417 | && dwarf2_per_objfile->using_index) | |
6418 | { | |
6419 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6420 | These cases require special processing. */ | |
ed2dc618 | 6421 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6422 | return lookup_dwo_signatured_type (cu, sig); |
6423 | else | |
6424 | return lookup_dwp_signatured_type (cu, sig); | |
6425 | } | |
6426 | else | |
6427 | { | |
6428 | struct signatured_type find_entry, *entry; | |
348e048f | 6429 | |
a2ce51a0 DE |
6430 | if (dwarf2_per_objfile->signatured_types == NULL) |
6431 | return NULL; | |
6432 | find_entry.signature = sig; | |
9a3c8263 | 6433 | entry = ((struct signatured_type *) |
b0b6a987 TT |
6434 | htab_find (dwarf2_per_objfile->signatured_types.get (), |
6435 | &find_entry)); | |
a2ce51a0 DE |
6436 | return entry; |
6437 | } | |
348e048f | 6438 | } |
18a8505e | 6439 | |
42e7ad6c | 6440 | /* Low level DIE reading support. */ |
348e048f | 6441 | |
d85a05f0 DJ |
6442 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6443 | ||
6444 | static void | |
6445 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6446 | struct dwarf2_cu *cu, |
3019eac3 | 6447 | struct dwarf2_section_info *section, |
685af9cd TT |
6448 | struct dwo_file *dwo_file, |
6449 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6450 | { |
fceca515 | 6451 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6452 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6453 | reader->cu = cu; |
3019eac3 | 6454 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6455 | reader->die_section = section; |
6456 | reader->buffer = section->buffer; | |
f664829e | 6457 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6458 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6459 | } |
6460 | ||
c0ab21c2 | 6461 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6462 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6463 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6464 | already. |
6465 | ||
6466 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6467 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6468 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6469 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6470 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6471 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6472 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6473 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6474 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6475 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6476 | kept around for at least as long as *RESULT_READER. | |
6477 | ||
b0c7bfa9 DE |
6478 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6479 | ||
6480 | static int | |
6481 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6482 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6483 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6484 | const char *stub_comp_dir, |
b0c7bfa9 | 6485 | struct die_reader_specs *result_reader, |
d521ce57 | 6486 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6487 | struct die_info **result_comp_unit_die, |
685af9cd | 6488 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6489 | { |
ed2dc618 | 6490 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6491 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6492 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6493 | bfd *abfd; |
d521ce57 | 6494 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6495 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6496 | int i,num_extra_attrs; | |
6497 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6498 | struct die_info *comp_unit_die; |
6499 | ||
b0aeadb3 DE |
6500 | /* At most one of these may be provided. */ |
6501 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6502 | |
b0c7bfa9 DE |
6503 | /* These attributes aren't processed until later: |
6504 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6505 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6506 | referenced later. However, these attributes are found in the stub | |
6507 | which we won't have later. In order to not impose this complication | |
6508 | on the rest of the code, we read them here and copy them to the | |
6509 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6510 | |
6511 | stmt_list = NULL; | |
6512 | low_pc = NULL; | |
6513 | high_pc = NULL; | |
6514 | ranges = NULL; | |
6515 | comp_dir = NULL; | |
6516 | ||
6517 | if (stub_comp_unit_die != NULL) | |
6518 | { | |
6519 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6520 | DWO file. */ | |
6521 | if (! this_cu->is_debug_types) | |
6522 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6523 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6524 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6525 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6526 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6527 | ||
a39fdb41 | 6528 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6529 | |
18a8505e AT |
6530 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6531 | here (if needed). We need the value before we can process | |
6532 | DW_AT_ranges. */ | |
a39fdb41 | 6533 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6534 | } |
a2ce51a0 DE |
6535 | else if (stub_comp_dir != NULL) |
6536 | { | |
6537 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6538 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6539 | comp_dir->name = DW_AT_comp_dir; |
6540 | comp_dir->form = DW_FORM_string; | |
6541 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6542 | DW_STRING (comp_dir) = stub_comp_dir; | |
6543 | } | |
b0c7bfa9 DE |
6544 | |
6545 | /* Set up for reading the DWO CU/TU. */ | |
6546 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6547 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6548 | section->read (objfile); |
6549 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6550 | begin_info_ptr = info_ptr = (section->buffer |
6551 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6552 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6553 | |
6554 | if (this_cu->is_debug_types) | |
6555 | { | |
b0c7bfa9 DE |
6556 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
6557 | ||
ed2dc618 SM |
6558 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6559 | &cu->header, section, | |
b0c7bfa9 | 6560 | dwo_abbrev_section, |
43988095 | 6561 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6562 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6563 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6564 | { |
6565 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6566 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6567 | hex_string (sig_type->signature), |
43988095 | 6568 | hex_string (cu->header.signature), |
9d8780f0 | 6569 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6570 | bfd_get_filename (abfd)); |
6571 | } | |
9c541725 | 6572 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6573 | /* For DWOs coming from DWP files, we don't know the CU length |
6574 | nor the type's offset in the TU until now. */ | |
4057dfde | 6575 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6576 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6577 | |
6578 | /* Establish the type offset that can be used to lookup the type. | |
6579 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6580 | sig_type->type_offset_in_section |
6581 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6582 | } |
6583 | else | |
6584 | { | |
ed2dc618 SM |
6585 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6586 | &cu->header, section, | |
b0c7bfa9 | 6587 | dwo_abbrev_section, |
43988095 | 6588 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6589 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6590 | /* For DWOs coming from DWP files, we don't know the CU length |
6591 | until now. */ | |
4057dfde | 6592 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6593 | } |
6594 | ||
685af9cd | 6595 | *result_dwo_abbrev_table |
86de1d91 TT |
6596 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6597 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6598 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6599 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6600 | |
6601 | /* Read in the die, but leave space to copy over the attributes | |
6602 | from the stub. This has the benefit of simplifying the rest of | |
6603 | the code - all the work to maintain the illusion of a single | |
6604 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6605 | num_extra_attrs = ((stmt_list != NULL) | |
6606 | + (low_pc != NULL) | |
6607 | + (high_pc != NULL) | |
6608 | + (ranges != NULL) | |
6609 | + (comp_dir != NULL)); | |
6610 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6611 | num_extra_attrs); |
b0c7bfa9 DE |
6612 | |
6613 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6614 | comp_unit_die = *result_comp_unit_die; | |
6615 | i = comp_unit_die->num_attrs; | |
6616 | if (stmt_list != NULL) | |
6617 | comp_unit_die->attrs[i++] = *stmt_list; | |
6618 | if (low_pc != NULL) | |
6619 | comp_unit_die->attrs[i++] = *low_pc; | |
6620 | if (high_pc != NULL) | |
6621 | comp_unit_die->attrs[i++] = *high_pc; | |
6622 | if (ranges != NULL) | |
6623 | comp_unit_die->attrs[i++] = *ranges; | |
6624 | if (comp_dir != NULL) | |
6625 | comp_unit_die->attrs[i++] = *comp_dir; | |
6626 | comp_unit_die->num_attrs += num_extra_attrs; | |
6627 | ||
b4f54984 | 6628 | if (dwarf_die_debug) |
bf6af496 DE |
6629 | { |
6630 | fprintf_unfiltered (gdb_stdlog, | |
6631 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6632 | section->get_name (), |
bf6af496 DE |
6633 | (unsigned) (begin_info_ptr - section->buffer), |
6634 | bfd_get_filename (abfd)); | |
b4f54984 | 6635 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6636 | } |
6637 | ||
b0c7bfa9 DE |
6638 | /* Skip dummy compilation units. */ |
6639 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6640 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6641 | return 0; | |
6642 | ||
6643 | *result_info_ptr = info_ptr; | |
6644 | return 1; | |
6645 | } | |
6646 | ||
a084a2a6 AT |
6647 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6648 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6649 | signature is part of the header. */ | |
6650 | static gdb::optional<ULONGEST> | |
6651 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6652 | { | |
6653 | if (cu->header.version >= 5) | |
6654 | return cu->header.signature; | |
6655 | struct attribute *attr; | |
6656 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6657 | if (attr == nullptr) | |
6658 | return gdb::optional<ULONGEST> (); | |
6659 | return DW_UNSND (attr); | |
6660 | } | |
6661 | ||
c0ab21c2 | 6662 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6663 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6664 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6665 | |
6666 | static struct dwo_unit * | |
6667 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
6668 | struct die_info *comp_unit_die, |
6669 | const char *dwo_name) | |
b0c7bfa9 DE |
6670 | { |
6671 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6672 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6673 | const char *comp_dir; |
b0c7bfa9 | 6674 | |
a2ce51a0 DE |
6675 | gdb_assert (cu != NULL); |
6676 | ||
b0c7bfa9 | 6677 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6678 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6679 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
6680 | |
6681 | if (this_cu->is_debug_types) | |
6682 | { | |
6683 | struct signatured_type *sig_type; | |
6684 | ||
6685 | /* Since this_cu is the first member of struct signatured_type, | |
6686 | we can go from a pointer to one to a pointer to the other. */ | |
6687 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
6688 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
6689 | } | |
6690 | else | |
6691 | { | |
a084a2a6 AT |
6692 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
6693 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
6694 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6695 | " [in module %s]"), | |
e3b94546 | 6696 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 6697 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 6698 | *signature); |
b0c7bfa9 DE |
6699 | } |
6700 | ||
b0c7bfa9 DE |
6701 | return dwo_unit; |
6702 | } | |
6703 | ||
c0ab21c2 | 6704 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6705 | See it for a description of the parameters. |
fcd3b13d | 6706 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6707 | |
c0ab21c2 TT |
6708 | void |
6709 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 6710 | int use_existing_cu) |
a2ce51a0 | 6711 | { |
a2ce51a0 | 6712 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6713 | |
6714 | /* Verify we can do the following downcast, and that we have the | |
6715 | data we need. */ | |
6716 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6717 | sig_type = (struct signatured_type *) this_cu; | |
6718 | gdb_assert (sig_type->dwo_unit != NULL); | |
6719 | ||
6aa5f3a6 DE |
6720 | if (use_existing_cu && this_cu->cu != NULL) |
6721 | { | |
6722 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6723 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6724 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6725 | } |
6726 | else | |
6727 | { | |
6728 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6729 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 6730 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
6731 | } |
6732 | ||
6733 | /* A future optimization, if needed, would be to use an existing | |
6734 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6735 | could share abbrev tables. */ | |
a2ce51a0 DE |
6736 | |
6737 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
6738 | NULL /* stub_comp_unit_die */, |
6739 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6740 | this, &info_ptr, |
3e225074 | 6741 | &comp_unit_die, |
c0ab21c2 | 6742 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6743 | { |
6744 | /* Dummy die. */ | |
c0ab21c2 | 6745 | dummy_p = true; |
a2ce51a0 | 6746 | } |
a2ce51a0 DE |
6747 | } |
6748 | ||
fd820528 | 6749 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6750 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6751 | |
f4dc4d17 DE |
6752 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6753 | Otherwise the table specified in the comp unit header is read in and used. | |
6754 | This is an optimization for when we already have the abbrev table. | |
6755 | ||
dee91e82 | 6756 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6757 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6758 | |
c0ab21c2 TT |
6759 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6760 | struct abbrev_table *abbrev_table, | |
6751ebae | 6761 | int use_existing_cu, |
c0ab21c2 TT |
6762 | bool skip_partial) |
6763 | : die_reader_specs {}, | |
6751ebae | 6764 | m_this_cu (this_cu) |
c906108c | 6765 | { |
ed2dc618 | 6766 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6767 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6768 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6769 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6770 | struct dwarf2_cu *cu; |
c0ab21c2 | 6771 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6772 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6773 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6774 | /* Non-zero if CU currently points to a DWO file and we need to |
6775 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6776 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6777 | int rereading_dwo_cu = 0; |
c906108c | 6778 | |
b4f54984 | 6779 | if (dwarf_die_debug) |
9d8780f0 | 6780 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6781 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6782 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6783 | |
a2ce51a0 DE |
6784 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6785 | file (instead of going through the stub), short-circuit all of this. */ | |
6786 | if (this_cu->reading_dwo_directly) | |
6787 | { | |
6788 | /* Narrow down the scope of possibilities to have to understand. */ | |
6789 | gdb_assert (this_cu->is_debug_types); | |
6790 | gdb_assert (abbrev_table == NULL); | |
6751ebae | 6791 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu); |
a2ce51a0 DE |
6792 | return; |
6793 | } | |
6794 | ||
dee91e82 | 6795 | /* This is cheap if the section is already read in. */ |
96b79293 | 6796 | section->read (objfile); |
dee91e82 | 6797 | |
9c541725 | 6798 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6799 | |
6800 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6801 | |
6802 | if (use_existing_cu && this_cu->cu != NULL) | |
6803 | { | |
6804 | cu = this_cu->cu; | |
42e7ad6c DE |
6805 | /* If this CU is from a DWO file we need to start over, we need to |
6806 | refetch the attributes from the skeleton CU. | |
6807 | This could be optimized by retrieving those attributes from when we | |
6808 | were here the first time: the previous comp_unit_die was stored in | |
6809 | comp_unit_obstack. But there's no data yet that we need this | |
6810 | optimization. */ | |
6811 | if (cu->dwo_unit != NULL) | |
6812 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6813 | } |
6814 | else | |
6815 | { | |
6816 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6817 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
6818 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6819 | cu = m_new_cu.get (); | |
42e7ad6c | 6820 | } |
dee91e82 | 6821 | |
b0c7bfa9 | 6822 | /* Get the header. */ |
9c541725 | 6823 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6824 | { |
6825 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6826 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6827 | } |
6828 | else | |
6829 | { | |
3019eac3 | 6830 | if (this_cu->is_debug_types) |
dee91e82 | 6831 | { |
ed2dc618 SM |
6832 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6833 | &cu->header, section, | |
4bdcc0c1 | 6834 | abbrev_section, info_ptr, |
43988095 | 6835 | rcuh_kind::TYPE); |
dee91e82 | 6836 | |
42e7ad6c DE |
6837 | /* Since per_cu is the first member of struct signatured_type, |
6838 | we can go from a pointer to one to a pointer to the other. */ | |
6839 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6840 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6841 | gdb_assert (sig_type->type_offset_in_tu |
6842 | == cu->header.type_cu_offset_in_tu); | |
6843 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6844 | |
42e7ad6c DE |
6845 | /* LENGTH has not been set yet for type units if we're |
6846 | using .gdb_index. */ | |
4057dfde | 6847 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6848 | |
6849 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6850 | sig_type->type_offset_in_section = |
6851 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6852 | |
6853 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6854 | } |
6855 | else | |
6856 | { | |
ed2dc618 SM |
6857 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6858 | &cu->header, section, | |
4bdcc0c1 | 6859 | abbrev_section, |
43988095 JK |
6860 | info_ptr, |
6861 | rcuh_kind::COMPILE); | |
dee91e82 | 6862 | |
9c541725 | 6863 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
4057dfde | 6864 | gdb_assert (this_cu->length == cu->header.get_length ()); |
43988095 | 6865 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6866 | } |
6867 | } | |
10b3939b | 6868 | |
6caca83c | 6869 | /* Skip dummy compilation units. */ |
dee91e82 | 6870 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6871 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6872 | { |
6873 | dummy_p = true; | |
6874 | return; | |
6875 | } | |
6caca83c | 6876 | |
433df2d4 DE |
6877 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6878 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6879 | done. */ |
f4dc4d17 | 6880 | if (abbrev_table != NULL) |
685af9cd TT |
6881 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6882 | else | |
f4dc4d17 | 6883 | { |
c0ab21c2 | 6884 | m_abbrev_table_holder |
86de1d91 TT |
6885 | = abbrev_table::read (objfile, abbrev_section, |
6886 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 6887 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6888 | } |
af703f96 | 6889 | |
dee91e82 | 6890 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6891 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6892 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6893 | |
58f0c718 | 6894 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6895 | { |
6896 | dummy_p = true; | |
6897 | return; | |
6898 | } | |
58f0c718 | 6899 | |
b0c7bfa9 | 6900 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6901 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6902 | table from the DWO file and pass the ownership over to us. It will be | |
6903 | referenced from READER, so we must make sure to free it after we're done | |
6904 | with READER. | |
6905 | ||
b0c7bfa9 DE |
6906 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6907 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6908 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6909 | if (dwo_name != nullptr) |
3019eac3 | 6910 | { |
3019eac3 | 6911 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6912 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6913 | |
3e225074 | 6914 | if (comp_unit_die->has_children) |
6a506a2d | 6915 | { |
b98664d3 | 6916 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6917 | " has children (offset %s) [in module %s]"), |
6918 | sect_offset_str (this_cu->sect_off), | |
6919 | bfd_get_filename (abfd)); | |
6a506a2d | 6920 | } |
c0ab21c2 | 6921 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 6922 | if (dwo_unit != NULL) |
3019eac3 | 6923 | { |
6a506a2d | 6924 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 6925 | comp_unit_die, NULL, |
c0ab21c2 | 6926 | this, &info_ptr, |
3e225074 | 6927 | &dwo_comp_unit_die, |
c0ab21c2 | 6928 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6929 | { |
6930 | /* Dummy die. */ | |
c0ab21c2 | 6931 | dummy_p = true; |
6a506a2d DE |
6932 | return; |
6933 | } | |
6934 | comp_unit_die = dwo_comp_unit_die; | |
6935 | } | |
6936 | else | |
6937 | { | |
6938 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6939 | the stub. A complaint has already been logged. There's | |
6940 | not much more we can do except pass on the stub DIE to | |
6941 | die_reader_func. We don't want to throw an error on bad | |
6942 | debug info. */ | |
3019eac3 DE |
6943 | } |
6944 | } | |
c0ab21c2 | 6945 | } |
3019eac3 | 6946 | |
6751ebae TT |
6947 | void |
6948 | cutu_reader::keep () | |
c0ab21c2 | 6949 | { |
b0c7bfa9 | 6950 | /* Done, clean up. */ |
6751ebae TT |
6951 | gdb_assert (!dummy_p); |
6952 | if (m_new_cu != NULL) | |
348e048f | 6953 | { |
c0ab21c2 TT |
6954 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6955 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 6956 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
6957 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
6958 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 6959 | /* The chain owns it now. */ |
c0ab21c2 | 6960 | m_new_cu.release (); |
348e048f | 6961 | } |
dee91e82 DE |
6962 | } |
6963 | ||
18a8505e AT |
6964 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
6965 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
6966 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
6967 | |
6968 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 6969 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
6970 | |
6971 | We fill in THIS_CU->length. | |
6972 | ||
dee91e82 | 6973 | THIS_CU->cu is always freed when done. |
3019eac3 | 6974 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
6975 | to care whether it refers to the "main" CU or the DWO CU. |
6976 | ||
6977 | When parent_cu is passed, it is used to provide a default value for | |
6978 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 6979 | |
c0ab21c2 TT |
6980 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6981 | struct dwarf2_cu *parent_cu, | |
6982 | struct dwo_file *dwo_file) | |
6983 | : die_reader_specs {}, | |
6984 | m_this_cu (this_cu) | |
dee91e82 | 6985 | { |
ed2dc618 | 6986 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6987 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6988 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6989 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 6990 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 6991 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 6992 | |
b4f54984 | 6993 | if (dwarf_die_debug) |
9d8780f0 | 6994 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6995 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6996 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6997 | |
dee91e82 DE |
6998 | gdb_assert (this_cu->cu == NULL); |
6999 | ||
33e80786 DE |
7000 | abbrev_section = (dwo_file != NULL |
7001 | ? &dwo_file->sections.abbrev | |
7002 | : get_abbrev_section_for_cu (this_cu)); | |
7003 | ||
dee91e82 | 7004 | /* This is cheap if the section is already read in. */ |
96b79293 | 7005 | section->read (objfile); |
dee91e82 | 7006 | |
c0ab21c2 | 7007 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7008 | |
9c541725 | 7009 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7010 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7011 | &m_new_cu->header, section, |
4bdcc0c1 | 7012 | abbrev_section, info_ptr, |
43988095 JK |
7013 | (this_cu->is_debug_types |
7014 | ? rcuh_kind::TYPE | |
7015 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7016 | |
18a8505e AT |
7017 | if (parent_cu != nullptr) |
7018 | { | |
c0ab21c2 TT |
7019 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7020 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7021 | } |
4057dfde | 7022 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7023 | |
7024 | /* Skip dummy compilation units. */ | |
7025 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7026 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7027 | { |
7028 | dummy_p = true; | |
7029 | return; | |
7030 | } | |
72bf9492 | 7031 | |
c0ab21c2 | 7032 | m_abbrev_table_holder |
86de1d91 TT |
7033 | = abbrev_table::read (objfile, abbrev_section, |
7034 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7035 | |
c0ab21c2 TT |
7036 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7037 | m_abbrev_table_holder.get ()); | |
3e225074 | 7038 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7039 | } |
7040 | ||
0018ea6f DE |
7041 | \f |
7042 | /* Type Unit Groups. | |
dee91e82 | 7043 | |
0018ea6f DE |
7044 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7045 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7046 | so that all types coming from the same compilation (.o file) are grouped | |
7047 | together. A future step could be to put the types in the same symtab as | |
7048 | the CU the types ultimately came from. */ | |
ff013f42 | 7049 | |
f4dc4d17 DE |
7050 | static hashval_t |
7051 | hash_type_unit_group (const void *item) | |
7052 | { | |
9a3c8263 SM |
7053 | const struct type_unit_group *tu_group |
7054 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7055 | |
094b34ac | 7056 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7057 | } |
348e048f DE |
7058 | |
7059 | static int | |
f4dc4d17 | 7060 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7061 | { |
9a3c8263 SM |
7062 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7063 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7064 | |
094b34ac | 7065 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7066 | } |
348e048f | 7067 | |
f4dc4d17 DE |
7068 | /* Allocate a hash table for type unit groups. */ |
7069 | ||
eaa5fa8b | 7070 | static htab_up |
298e9637 | 7071 | allocate_type_unit_groups_table () |
f4dc4d17 | 7072 | { |
eaa5fa8b TT |
7073 | return htab_up (htab_create_alloc (3, |
7074 | hash_type_unit_group, | |
7075 | eq_type_unit_group, | |
7076 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7077 | } |
dee91e82 | 7078 | |
f4dc4d17 DE |
7079 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7080 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7081 | of any one psymtab grow too big. */ | |
7082 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7083 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7084 | |
094b34ac | 7085 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7086 | Create the type_unit_group object used to hold one or more TUs. */ |
7087 | ||
7088 | static struct type_unit_group * | |
094b34ac | 7089 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7090 | { |
518817b3 SM |
7091 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7092 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7093 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7094 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7095 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7096 | |
7097 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7098 | struct type_unit_group); | |
094b34ac | 7099 | per_cu = &tu_group->per_cu; |
518817b3 | 7100 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7101 | |
094b34ac DE |
7102 | if (dwarf2_per_objfile->using_index) |
7103 | { | |
7104 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7105 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7106 | } |
7107 | else | |
7108 | { | |
9c541725 | 7109 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7110 | dwarf2_psymtab *pst; |
528e1572 | 7111 | std::string name; |
094b34ac DE |
7112 | |
7113 | /* Give the symtab a useful name for debug purposes. */ | |
7114 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7115 | name = string_printf ("<type_units_%d>", |
7116 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7117 | else |
528e1572 | 7118 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7119 | |
528e1572 | 7120 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7121 | pst->anonymous = true; |
094b34ac | 7122 | } |
f4dc4d17 | 7123 | |
094b34ac | 7124 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7125 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7126 | |
7127 | return tu_group; | |
7128 | } | |
7129 | ||
094b34ac DE |
7130 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7131 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7132 | |
7133 | static struct type_unit_group * | |
ff39bb5e | 7134 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7135 | { |
518817b3 SM |
7136 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7137 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7138 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7139 | struct type_unit_group *tu_group; | |
7140 | void **slot; | |
7141 | unsigned int line_offset; | |
7142 | struct type_unit_group type_unit_group_for_lookup; | |
7143 | ||
7144 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
298e9637 | 7145 | dwarf2_per_objfile->type_unit_groups = allocate_type_unit_groups_table (); |
f4dc4d17 DE |
7146 | |
7147 | /* Do we need to create a new group, or can we use an existing one? */ | |
7148 | ||
7149 | if (stmt_list) | |
7150 | { | |
7151 | line_offset = DW_UNSND (stmt_list); | |
7152 | ++tu_stats->nr_symtab_sharers; | |
7153 | } | |
7154 | else | |
7155 | { | |
7156 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7157 | We can do various things here like create one group per TU or | |
7158 | spread them over multiple groups to split up the expansion work. | |
7159 | To avoid worst case scenarios (too many groups or too large groups) | |
7160 | we, umm, group them in bunches. */ | |
7161 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7162 | | (tu_stats->nr_stmt_less_type_units | |
7163 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7164 | ++tu_stats->nr_stmt_less_type_units; | |
7165 | } | |
7166 | ||
094b34ac | 7167 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7168 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
eaa5fa8b | 7169 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups.get (), |
f4dc4d17 DE |
7170 | &type_unit_group_for_lookup, INSERT); |
7171 | if (*slot != NULL) | |
7172 | { | |
9a3c8263 | 7173 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7174 | gdb_assert (tu_group != NULL); |
7175 | } | |
7176 | else | |
7177 | { | |
9c541725 | 7178 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7179 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7180 | *slot = tu_group; |
7181 | ++tu_stats->nr_symtabs; | |
7182 | } | |
7183 | ||
7184 | return tu_group; | |
7185 | } | |
0018ea6f DE |
7186 | \f |
7187 | /* Partial symbol tables. */ | |
7188 | ||
7189 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7190 | ||
7191 | The caller must fill in the following details: | |
7192 | dirname, textlow, texthigh. */ | |
7193 | ||
891813be | 7194 | static dwarf2_psymtab * |
0018ea6f DE |
7195 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7196 | { | |
e3b94546 | 7197 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7198 | dwarf2_psymtab *pst; |
0018ea6f | 7199 | |
9f4e76a4 | 7200 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7201 | |
6d94535f | 7202 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7203 | |
7204 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7205 | per_cu->v.psymtab = pst; |
7206 | ||
7207 | return pst; | |
7208 | } | |
7209 | ||
c0ab21c2 | 7210 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7211 | |
7212 | static void | |
7213 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7214 | const gdb_byte *info_ptr, |
0018ea6f | 7215 | struct die_info *comp_unit_die, |
c0ab21c2 | 7216 | enum language pretend_language) |
0018ea6f DE |
7217 | { |
7218 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7219 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7220 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7221 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7222 | CORE_ADDR baseaddr; |
7223 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7224 | dwarf2_psymtab *pst; |
3a2b436a | 7225 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7226 | const char *filename; |
0018ea6f | 7227 | |
0018ea6f DE |
7228 | gdb_assert (! per_cu->is_debug_types); |
7229 | ||
c0ab21c2 | 7230 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7231 | |
0018ea6f | 7232 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7233 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7234 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7235 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7236 | if (filename == NULL) | |
0018ea6f | 7237 | filename = ""; |
2e927613 TV |
7238 | else if (strcmp (filename, artificial) == 0) |
7239 | { | |
7240 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7241 | sect_offset_str (per_cu->sect_off), |
7242 | (char *) NULL)); | |
2e927613 TV |
7243 | filename = debug_filename.get (); |
7244 | } | |
0018ea6f DE |
7245 | |
7246 | pst = create_partial_symtab (per_cu, filename); | |
7247 | ||
7248 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7249 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7250 | |
b3b3bada | 7251 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7252 | |
7253 | dwarf2_find_base_address (comp_unit_die, cu); | |
7254 | ||
7255 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7256 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7257 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7258 | &best_highpc, cu, pst); | |
7259 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7260 | { |
7261 | CORE_ADDR low | |
7262 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7263 | - baseaddr); | |
7264 | CORE_ADDR high | |
7265 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7266 | - baseaddr - 1); | |
7267 | /* Store the contiguous range if it is not empty; it can be | |
7268 | empty for CUs with no code. */ | |
d320c2b5 TT |
7269 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7270 | low, high, pst); | |
79748972 | 7271 | } |
0018ea6f DE |
7272 | |
7273 | /* Check if comp unit has_children. | |
7274 | If so, read the rest of the partial symbols from this comp unit. | |
7275 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7276 | if (comp_unit_die->has_children) |
0018ea6f DE |
7277 | { |
7278 | struct partial_die_info *first_die; | |
7279 | CORE_ADDR lowpc, highpc; | |
7280 | ||
7281 | lowpc = ((CORE_ADDR) -1); | |
7282 | highpc = ((CORE_ADDR) 0); | |
7283 | ||
7284 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7285 | ||
7286 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7287 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7288 | |
7289 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7290 | complaints from `maint check'. */ | |
7291 | if (lowpc == ((CORE_ADDR) -1)) | |
7292 | lowpc = highpc; | |
7293 | ||
7294 | /* If the compilation unit didn't have an explicit address range, | |
7295 | then use the information extracted from its child dies. */ | |
e385593e | 7296 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7297 | { |
7298 | best_lowpc = lowpc; | |
7299 | best_highpc = highpc; | |
7300 | } | |
7301 | } | |
4ae976d1 | 7302 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7303 | best_lowpc + baseaddr) |
7304 | - baseaddr); | |
4ae976d1 | 7305 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7306 | best_highpc + baseaddr) |
7307 | - baseaddr); | |
0018ea6f | 7308 | |
8763cede | 7309 | end_psymtab_common (objfile, pst); |
0018ea6f | 7310 | |
ae640021 | 7311 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7312 | { |
7313 | int i; | |
ae640021 | 7314 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7315 | |
7316 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7317 | post-pass. */ | |
7318 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7319 | pst->dependencies |
7320 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7321 | for (i = 0; i < len; ++i) |
7322 | { | |
7323 | pst->dependencies[i] | |
7324 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7325 | } | |
0018ea6f | 7326 | |
ae640021 | 7327 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7328 | } |
7329 | ||
7330 | /* Get the list of files included in the current compilation unit, | |
7331 | and build a psymtab for each of them. */ | |
7332 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7333 | ||
b4f54984 | 7334 | if (dwarf_read_debug) |
b926417a TT |
7335 | fprintf_unfiltered (gdb_stdlog, |
7336 | "Psymtab for %s unit @%s: %s - %s" | |
7337 | ", %d global, %d static syms\n", | |
7338 | per_cu->is_debug_types ? "type" : "comp", | |
7339 | sect_offset_str (per_cu->sect_off), | |
7340 | paddress (gdbarch, pst->text_low (objfile)), | |
7341 | paddress (gdbarch, pst->text_high (objfile)), | |
7342 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7343 | } |
7344 | ||
7345 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7346 | Process compilation unit THIS_CU for a psymtab. */ | |
7347 | ||
7348 | static void | |
7349 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
135f5437 | 7350 | bool want_partial_unit, |
b93601f3 | 7351 | enum language pretend_language) |
0018ea6f DE |
7352 | { |
7353 | /* If this compilation unit was already read in, free the | |
7354 | cached copy in order to read it in again. This is | |
7355 | necessary because we skipped some symbols when we first | |
7356 | read in the compilation unit (see load_partial_dies). | |
7357 | This problem could be avoided, but the benefit is unclear. */ | |
7358 | if (this_cu->cu != NULL) | |
7359 | free_one_cached_comp_unit (this_cu); | |
7360 | ||
6751ebae | 7361 | cutu_reader reader (this_cu, NULL, 0, false); |
c0ab21c2 | 7362 | |
58990295 TV |
7363 | switch (reader.comp_unit_die->tag) |
7364 | { | |
7365 | case DW_TAG_compile_unit: | |
7366 | this_cu->unit_type = DW_UT_compile; | |
7367 | break; | |
7368 | case DW_TAG_partial_unit: | |
7369 | this_cu->unit_type = DW_UT_partial; | |
7370 | break; | |
7371 | default: | |
7372 | abort (); | |
7373 | } | |
7374 | ||
c0ab21c2 | 7375 | if (reader.dummy_p) |
f1902523 | 7376 | { |
c0ab21c2 | 7377 | /* Nothing. */ |
f1902523 | 7378 | } |
c0ab21c2 | 7379 | else if (this_cu->is_debug_types) |
3e225074 TT |
7380 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7381 | reader.comp_unit_die); | |
135f5437 TT |
7382 | else if (want_partial_unit |
7383 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7384 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7385 | reader.comp_unit_die, | |
c0ab21c2 | 7386 | pretend_language); |
0018ea6f | 7387 | |
58990295 TV |
7388 | this_cu->lang = this_cu->cu->language; |
7389 | ||
0018ea6f | 7390 | /* Age out any secondary CUs. */ |
ed2dc618 | 7391 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7392 | } |
f4dc4d17 DE |
7393 | |
7394 | /* Reader function for build_type_psymtabs. */ | |
7395 | ||
7396 | static void | |
7397 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7398 | const gdb_byte *info_ptr, |
3e225074 | 7399 | struct die_info *type_unit_die) |
f4dc4d17 | 7400 | { |
ed2dc618 | 7401 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7402 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7403 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7404 | struct dwarf2_cu *cu = reader->cu; | |
7405 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7406 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7407 | struct type_unit_group *tu_group; |
7408 | struct attribute *attr; | |
7409 | struct partial_die_info *first_die; | |
7410 | CORE_ADDR lowpc, highpc; | |
891813be | 7411 | dwarf2_psymtab *pst; |
f4dc4d17 | 7412 | |
0186c6a7 DE |
7413 | gdb_assert (per_cu->is_debug_types); |
7414 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7415 | |
3e225074 | 7416 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7417 | return; |
7418 | ||
052c8bb8 | 7419 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7420 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7421 | |
df07e2c7 | 7422 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7423 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7424 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7425 | |
7426 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7427 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7428 | pst->anonymous = true; |
f4dc4d17 DE |
7429 | |
7430 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7431 | ||
7432 | lowpc = (CORE_ADDR) -1; | |
7433 | highpc = (CORE_ADDR) 0; | |
7434 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7435 | ||
8763cede | 7436 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7437 | } |
7438 | ||
73051182 DE |
7439 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7440 | ||
7441 | struct tu_abbrev_offset | |
7442 | { | |
b2bdb8cf SM |
7443 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7444 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7445 | {} | |
7446 | ||
7447 | signatured_type *sig_type; | |
73051182 DE |
7448 | sect_offset abbrev_offset; |
7449 | }; | |
7450 | ||
484cf504 | 7451 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7452 | |
484cf504 TT |
7453 | static bool |
7454 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7455 | const struct tu_abbrev_offset &b) | |
73051182 | 7456 | { |
484cf504 | 7457 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7458 | } |
7459 | ||
7460 | /* Efficiently read all the type units. | |
7461 | This does the bulk of the work for build_type_psymtabs. | |
7462 | ||
7463 | The efficiency is because we sort TUs by the abbrev table they use and | |
7464 | only read each abbrev table once. In one program there are 200K TUs | |
7465 | sharing 8K abbrev tables. | |
7466 | ||
7467 | The main purpose of this function is to support building the | |
7468 | dwarf2_per_objfile->type_unit_groups table. | |
7469 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7470 | can collapse the search space by grouping them by stmt_list. | |
7471 | The savings can be significant, in the same program from above the 200K TUs | |
7472 | share 8K stmt_list tables. | |
7473 | ||
7474 | FUNC is expected to call get_type_unit_group, which will create the | |
7475 | struct type_unit_group if necessary and add it to | |
7476 | dwarf2_per_objfile->type_unit_groups. */ | |
7477 | ||
7478 | static void | |
ed2dc618 | 7479 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7480 | { |
73051182 | 7481 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7482 | abbrev_table_up abbrev_table; |
73051182 | 7483 | sect_offset abbrev_offset; |
73051182 DE |
7484 | |
7485 | /* It's up to the caller to not call us multiple times. */ | |
7486 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7487 | ||
b2bdb8cf | 7488 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7489 | return; |
7490 | ||
7491 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7492 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7493 | read each abbrev table in. | |
7494 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7495 | This is simpler and efficient enough for now. | |
7496 | ||
7497 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7498 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7499 | stmt_list value too so in practice this should work well. | |
7500 | ||
7501 | The basic algorithm here is: | |
7502 | ||
7503 | sort TUs by abbrev table | |
7504 | for each TU with same abbrev table: | |
7505 | read abbrev table if first user | |
7506 | read TU top level DIE | |
7507 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7508 | call FUNC */ | |
7509 | ||
b4f54984 | 7510 | if (dwarf_read_debug) |
73051182 DE |
7511 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7512 | ||
7513 | /* Sort in a separate table to maintain the order of all_type_units | |
7514 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7515 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7516 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7517 | ||
7518 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7519 | sorted_by_abbrev.emplace_back | |
7520 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7521 | sig_type->per_cu.section, | |
7522 | sig_type->per_cu.sect_off)); | |
73051182 | 7523 | |
484cf504 TT |
7524 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7525 | sort_tu_by_abbrev_offset); | |
73051182 | 7526 | |
9c541725 | 7527 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7528 | |
b2bdb8cf | 7529 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7530 | { |
73051182 DE |
7531 | /* Switch to the next abbrev table if necessary. */ |
7532 | if (abbrev_table == NULL | |
b2bdb8cf | 7533 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7534 | { |
b2bdb8cf | 7535 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7536 | abbrev_table = |
86de1d91 TT |
7537 | abbrev_table::read (dwarf2_per_objfile->objfile, |
7538 | &dwarf2_per_objfile->abbrev, | |
7539 | abbrev_offset); | |
73051182 DE |
7540 | ++tu_stats->nr_uniq_abbrev_tables; |
7541 | } | |
7542 | ||
c0ab21c2 | 7543 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
6751ebae | 7544 | 0, false); |
c0ab21c2 TT |
7545 | if (!reader.dummy_p) |
7546 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7547 | reader.comp_unit_die); |
73051182 | 7548 | } |
6aa5f3a6 | 7549 | } |
73051182 | 7550 | |
6aa5f3a6 DE |
7551 | /* Print collected type unit statistics. */ |
7552 | ||
7553 | static void | |
ed2dc618 | 7554 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7555 | { |
7556 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
7557 | ||
7558 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
7559 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
7560 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
7561 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7562 | tu_stats->nr_uniq_abbrev_tables); | |
7563 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7564 | tu_stats->nr_symtabs); | |
7565 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7566 | tu_stats->nr_symtab_sharers); | |
7567 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7568 | tu_stats->nr_stmt_less_type_units); | |
7569 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7570 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7571 | } |
7572 | ||
f4dc4d17 DE |
7573 | /* Traversal function for build_type_psymtabs. */ |
7574 | ||
7575 | static int | |
7576 | build_type_psymtab_dependencies (void **slot, void *info) | |
7577 | { | |
ed2dc618 SM |
7578 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7579 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7580 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7581 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7582 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7583 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7584 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7585 | int i; |
7586 | ||
7587 | gdb_assert (len > 0); | |
197400e8 | 7588 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7589 | |
7590 | pst->number_of_dependencies = len; | |
a9342b62 | 7591 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7592 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7593 | { |
df07e2c7 | 7594 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7595 | gdb_assert (iter->per_cu.is_debug_types); |
7596 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7597 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7598 | } |
7599 | ||
df07e2c7 AB |
7600 | delete tu_group->tus; |
7601 | tu_group->tus = nullptr; | |
348e048f DE |
7602 | |
7603 | return 1; | |
7604 | } | |
7605 | ||
7606 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7607 | Build partial symbol tables for the .debug_types comp-units. */ | |
7608 | ||
7609 | static void | |
ed2dc618 | 7610 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7611 | { |
ed2dc618 | 7612 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7613 | return; |
7614 | ||
ed2dc618 | 7615 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7616 | } |
f4dc4d17 | 7617 | |
6aa5f3a6 DE |
7618 | /* Traversal function for process_skeletonless_type_unit. |
7619 | Read a TU in a DWO file and build partial symbols for it. */ | |
7620 | ||
7621 | static int | |
7622 | process_skeletonless_type_unit (void **slot, void *info) | |
7623 | { | |
7624 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7625 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7626 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7627 | struct signatured_type find_entry, *entry; |
7628 | ||
7629 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7630 | ||
7631 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 7632 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
6aa5f3a6 DE |
7633 | |
7634 | find_entry.signature = dwo_unit->signature; | |
b0b6a987 TT |
7635 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
7636 | &find_entry, INSERT); | |
6aa5f3a6 DE |
7637 | /* If we've already seen this type there's nothing to do. What's happening |
7638 | is we're doing our own version of comdat-folding here. */ | |
7639 | if (*slot != NULL) | |
7640 | return 1; | |
7641 | ||
7642 | /* This does the job that create_all_type_units would have done for | |
7643 | this TU. */ | |
ed2dc618 SM |
7644 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7645 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7646 | *slot = entry; |
7647 | ||
7648 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6751ebae | 7649 | cutu_reader reader (&entry->per_cu, NULL, 0, false); |
c0ab21c2 TT |
7650 | if (!reader.dummy_p) |
7651 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7652 | reader.comp_unit_die); |
6aa5f3a6 DE |
7653 | |
7654 | return 1; | |
7655 | } | |
7656 | ||
7657 | /* Traversal function for process_skeletonless_type_units. */ | |
7658 | ||
7659 | static int | |
7660 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7661 | { | |
7662 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7663 | ||
7664 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7665 | htab_traverse_noresize (dwo_file->tus.get (), |
7666 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7667 | |
7668 | return 1; | |
7669 | } | |
7670 | ||
7671 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7672 | This is needed in case a TU was emitted without its skeleton. | |
7673 | Note: This can't be done until we know what all the DWO files are. */ | |
7674 | ||
7675 | static void | |
ed2dc618 | 7676 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7677 | { |
7678 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7679 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
7680 | && dwarf2_per_objfile->dwo_files != NULL) |
7681 | { | |
51ac9db5 | 7682 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 7683 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7684 | dwarf2_per_objfile); |
6aa5f3a6 | 7685 | } |
348e048f DE |
7686 | } |
7687 | ||
ed2dc618 | 7688 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7689 | |
7690 | static void | |
ed2dc618 | 7691 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7692 | { |
b76e467d | 7693 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 7694 | { |
891813be | 7695 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7696 | |
36586728 TT |
7697 | if (pst == NULL) |
7698 | continue; | |
7699 | ||
b76e467d | 7700 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7701 | { |
7702 | /* Set the 'user' field only if it is not already set. */ | |
7703 | if (pst->dependencies[j]->user == NULL) | |
7704 | pst->dependencies[j]->user = pst; | |
7705 | } | |
7706 | } | |
7707 | } | |
7708 | ||
93311388 DE |
7709 | /* Build the partial symbol table by doing a quick pass through the |
7710 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7711 | |
93311388 | 7712 | static void |
ed2dc618 | 7713 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7714 | { |
ed2dc618 | 7715 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7716 | |
b4f54984 | 7717 | if (dwarf_read_debug) |
45cfd468 DE |
7718 | { |
7719 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7720 | objfile_name (objfile)); |
45cfd468 DE |
7721 | } |
7722 | ||
76935768 TT |
7723 | scoped_restore restore_reading_psyms |
7724 | = make_scoped_restore (&dwarf2_per_objfile->reading_partial_symbols, | |
7725 | true); | |
98bfdba5 | 7726 | |
96b79293 | 7727 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 7728 | |
93311388 DE |
7729 | /* Any cached compilation units will be linked by the per-objfile |
7730 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7731 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7732 | |
ed2dc618 | 7733 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7734 | |
ed2dc618 | 7735 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7736 | |
60606b2c TT |
7737 | /* Create a temporary address map on a temporary obstack. We later |
7738 | copy this to the final obstack. */ | |
8268c778 | 7739 | auto_obstack temp_obstack; |
791afaa2 TT |
7740 | |
7741 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7742 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7743 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7744 | |
b76e467d | 7745 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
135f5437 | 7746 | process_psymtab_comp_unit (per_cu, false, language_minimal); |
ff013f42 | 7747 | |
6aa5f3a6 | 7748 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7749 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7750 | |
7751 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
7752 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
7753 | { | |
eaa5fa8b | 7754 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups.get (), |
ed2dc618 | 7755 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7756 | } |
7757 | ||
b4f54984 | 7758 | if (dwarf_read_debug) |
ed2dc618 | 7759 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7760 | |
ed2dc618 | 7761 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7762 | |
d320c2b5 TT |
7763 | objfile->partial_symtabs->psymtabs_addrmap |
7764 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7765 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7766 | /* At this point we want to keep the address map. */ |
7767 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7768 | |
b4f54984 | 7769 | if (dwarf_read_debug) |
45cfd468 | 7770 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7771 | objfile_name (objfile)); |
ae038cb0 DJ |
7772 | } |
7773 | ||
dee91e82 DE |
7774 | /* Load the partial DIEs for a secondary CU into memory. |
7775 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7776 | |
dee91e82 DE |
7777 | static void |
7778 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
7779 | { | |
6751ebae | 7780 | cutu_reader reader (this_cu, NULL, 1, false); |
c0ab21c2 TT |
7781 | |
7782 | if (!reader.dummy_p) | |
7783 | { | |
7784 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7785 | language_minimal); | |
7786 | ||
7787 | /* Check if comp unit has_children. | |
7788 | If so, read the rest of the partial symbols from this comp unit. | |
7789 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7790 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7791 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7792 | |
7793 | reader.keep (); | |
c0ab21c2 | 7794 | } |
ae038cb0 DJ |
7795 | } |
7796 | ||
ae038cb0 | 7797 | static void |
ed2dc618 | 7798 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 7799 | struct dwarf2_section_info *section, |
f1902523 | 7800 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7801 | unsigned int is_dwz) |
ae038cb0 | 7802 | { |
d521ce57 | 7803 | const gdb_byte *info_ptr; |
ed2dc618 | 7804 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 7805 | |
b4f54984 | 7806 | if (dwarf_read_debug) |
bf6af496 | 7807 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
7808 | section->get_name (), |
7809 | section->get_file_name ()); | |
bf6af496 | 7810 | |
96b79293 | 7811 | section->read (objfile); |
ae038cb0 | 7812 | |
36586728 | 7813 | info_ptr = section->buffer; |
6e70227d | 7814 | |
36586728 | 7815 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7816 | { |
ae038cb0 | 7817 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 7818 | |
9c541725 | 7819 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7820 | |
f1902523 | 7821 | comp_unit_head cu_header; |
ed2dc618 SM |
7822 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
7823 | abbrev_section, info_ptr, | |
7824 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
7825 | |
7826 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
7827 | if (cu_header.unit_type != DW_UT_type) |
7828 | { | |
7829 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
7830 | struct dwarf2_per_cu_data); | |
7831 | memset (this_cu, 0, sizeof (*this_cu)); | |
7832 | } | |
7833 | else | |
7834 | { | |
7835 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
7836 | struct signatured_type); | |
7837 | memset (sig_type, 0, sizeof (*sig_type)); | |
7838 | sig_type->signature = cu_header.signature; | |
7839 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
7840 | this_cu = &sig_type->per_cu; | |
7841 | } | |
7842 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7843 | this_cu->sect_off = sect_off; |
f1902523 | 7844 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7845 | this_cu->is_dwz = is_dwz; |
e3b94546 | 7846 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 7847 | this_cu->section = section; |
ae038cb0 | 7848 | |
b76e467d | 7849 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
7850 | |
7851 | info_ptr = info_ptr + this_cu->length; | |
7852 | } | |
36586728 TT |
7853 | } |
7854 | ||
7855 | /* Create a list of all compilation units in OBJFILE. | |
7856 | This is only done for -readnow and building partial symtabs. */ | |
7857 | ||
7858 | static void | |
ed2dc618 | 7859 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 7860 | { |
b76e467d | 7861 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 7862 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 7863 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 7864 | |
b76e467d | 7865 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 7866 | if (dwz != NULL) |
ed2dc618 | 7867 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 7868 | 1); |
c906108c SS |
7869 | } |
7870 | ||
5734ee8b | 7871 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7872 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7873 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7874 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7875 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7876 | |
72bf9492 DJ |
7877 | static void |
7878 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7879 | CORE_ADDR *highpc, int set_addrmap, |
7880 | struct dwarf2_cu *cu) | |
c906108c | 7881 | { |
72bf9492 | 7882 | struct partial_die_info *pdi; |
c906108c | 7883 | |
91c24f0a DC |
7884 | /* Now, march along the PDI's, descending into ones which have |
7885 | interesting children but skipping the children of the other ones, | |
7886 | until we reach the end of the compilation unit. */ | |
c906108c | 7887 | |
72bf9492 | 7888 | pdi = first_die; |
91c24f0a | 7889 | |
72bf9492 DJ |
7890 | while (pdi != NULL) |
7891 | { | |
52356b79 | 7892 | pdi->fixup (cu); |
c906108c | 7893 | |
f55ee35c | 7894 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7895 | children, so we need to look at them. Ditto for anonymous |
7896 | enums. */ | |
933c6fe4 | 7897 | |
72bf9492 | 7898 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7899 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7900 | || pdi->tag == DW_TAG_imported_unit |
7901 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7902 | { |
72bf9492 | 7903 | switch (pdi->tag) |
c906108c SS |
7904 | { |
7905 | case DW_TAG_subprogram: | |
b1dc1806 | 7906 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7907 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 7908 | break; |
72929c62 | 7909 | case DW_TAG_constant: |
c906108c SS |
7910 | case DW_TAG_variable: |
7911 | case DW_TAG_typedef: | |
91c24f0a | 7912 | case DW_TAG_union_type: |
72bf9492 | 7913 | if (!pdi->is_declaration) |
63d06c5c | 7914 | { |
72bf9492 | 7915 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7916 | } |
7917 | break; | |
c906108c | 7918 | case DW_TAG_class_type: |
680b30c7 | 7919 | case DW_TAG_interface_type: |
c906108c | 7920 | case DW_TAG_structure_type: |
72bf9492 | 7921 | if (!pdi->is_declaration) |
c906108c | 7922 | { |
72bf9492 | 7923 | add_partial_symbol (pdi, cu); |
c906108c | 7924 | } |
b7fee5a3 KS |
7925 | if ((cu->language == language_rust |
7926 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7927 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7928 | set_addrmap, cu); | |
c906108c | 7929 | break; |
91c24f0a | 7930 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7931 | if (!pdi->is_declaration) |
7932 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7933 | break; |
7934 | case DW_TAG_base_type: | |
a02abb62 | 7935 | case DW_TAG_subrange_type: |
c906108c | 7936 | /* File scope base type definitions are added to the partial |
c5aa993b | 7937 | symbol table. */ |
72bf9492 | 7938 | add_partial_symbol (pdi, cu); |
c906108c | 7939 | break; |
d9fa45fe | 7940 | case DW_TAG_namespace: |
cdc07690 | 7941 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7942 | break; |
5d7cb8df | 7943 | case DW_TAG_module: |
59c35742 AB |
7944 | if (!pdi->is_declaration) |
7945 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7946 | break; |
95554aad TT |
7947 | case DW_TAG_imported_unit: |
7948 | { | |
7949 | struct dwarf2_per_cu_data *per_cu; | |
7950 | ||
f4dc4d17 DE |
7951 | /* For now we don't handle imported units in type units. */ |
7952 | if (cu->per_cu->is_debug_types) | |
7953 | { | |
7954 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7955 | " supported in type units [in module %s]"), | |
518817b3 | 7956 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
7957 | } |
7958 | ||
e3b94546 SM |
7959 | per_cu = dwarf2_find_containing_comp_unit |
7960 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 7961 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
7962 | |
7963 | /* Go read the partial unit, if needed. */ | |
7964 | if (per_cu->v.psymtab == NULL) | |
135f5437 | 7965 | process_psymtab_comp_unit (per_cu, true, cu->language); |
95554aad | 7966 | |
ae640021 | 7967 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
7968 | } |
7969 | break; | |
74921315 KS |
7970 | case DW_TAG_imported_declaration: |
7971 | add_partial_symbol (pdi, cu); | |
7972 | break; | |
c906108c SS |
7973 | default: |
7974 | break; | |
7975 | } | |
7976 | } | |
7977 | ||
72bf9492 DJ |
7978 | /* If the die has a sibling, skip to the sibling. */ |
7979 | ||
7980 | pdi = pdi->die_sibling; | |
7981 | } | |
7982 | } | |
7983 | ||
7984 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 7985 | |
72bf9492 | 7986 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 7987 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
7988 | Enumerators are an exception; they use the scope of their parent |
7989 | enumeration type, i.e. the name of the enumeration type is not | |
7990 | prepended to the enumerator. | |
91c24f0a | 7991 | |
72bf9492 DJ |
7992 | There are two complexities. One is DW_AT_specification; in this |
7993 | case "parent" means the parent of the target of the specification, | |
7994 | instead of the direct parent of the DIE. The other is compilers | |
7995 | which do not emit DW_TAG_namespace; in this case we try to guess | |
7996 | the fully qualified name of structure types from their members' | |
7997 | linkage names. This must be done using the DIE's children rather | |
7998 | than the children of any DW_AT_specification target. We only need | |
7999 | to do this for structures at the top level, i.e. if the target of | |
8000 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8001 | have a parent. */ | |
8002 | ||
8003 | /* Compute the scope prefix associated with PDI's parent, in | |
8004 | compilation unit CU. The result will be allocated on CU's | |
8005 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8006 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8007 | static const char * |
72bf9492 DJ |
8008 | partial_die_parent_scope (struct partial_die_info *pdi, |
8009 | struct dwarf2_cu *cu) | |
8010 | { | |
15d034d0 | 8011 | const char *grandparent_scope; |
72bf9492 | 8012 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8013 | |
72bf9492 DJ |
8014 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8015 | then this means the parent of the specification DIE. */ | |
8016 | ||
8017 | real_pdi = pdi; | |
72bf9492 | 8018 | while (real_pdi->has_specification) |
fb816e8b | 8019 | { |
122cf0f2 AB |
8020 | auto res = find_partial_die (real_pdi->spec_offset, |
8021 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8022 | real_pdi = res.pdi; |
8023 | cu = res.cu; | |
8024 | } | |
72bf9492 DJ |
8025 | |
8026 | parent = real_pdi->die_parent; | |
8027 | if (parent == NULL) | |
8028 | return NULL; | |
8029 | ||
8030 | if (parent->scope_set) | |
8031 | return parent->scope; | |
8032 | ||
52356b79 | 8033 | parent->fixup (cu); |
72bf9492 | 8034 | |
10b3939b | 8035 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8036 | |
acebe513 UW |
8037 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8038 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8039 | Work around this problem here. */ | |
8040 | if (cu->language == language_cplus | |
6e70227d | 8041 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8042 | && strcmp (parent->name, "::") == 0 |
8043 | && grandparent_scope == NULL) | |
8044 | { | |
8045 | parent->scope = NULL; | |
8046 | parent->scope_set = 1; | |
8047 | return NULL; | |
8048 | } | |
8049 | ||
0a4b0913 | 8050 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8051 | if (pdi->tag == DW_TAG_enumerator) |
8052 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8053 | parent->scope = grandparent_scope; | |
8054 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8055 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8056 | || parent->tag == DW_TAG_structure_type |
8057 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8058 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8059 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8060 | || parent->tag == DW_TAG_enumeration_type |
8061 | || (cu->language == language_fortran | |
8062 | && parent->tag == DW_TAG_subprogram | |
8063 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8064 | { |
8065 | if (grandparent_scope == NULL) | |
8066 | parent->scope = parent->name; | |
8067 | else | |
3e43a32a MS |
8068 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8069 | grandparent_scope, | |
f55ee35c | 8070 | parent->name, 0, cu); |
72bf9492 | 8071 | } |
72bf9492 DJ |
8072 | else |
8073 | { | |
8074 | /* FIXME drow/2004-04-01: What should we be doing with | |
8075 | function-local names? For partial symbols, we should probably be | |
8076 | ignoring them. */ | |
fa9c3fa0 TT |
8077 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8078 | dwarf_tag_name (parent->tag), | |
8079 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8080 | parent->scope = grandparent_scope; |
c906108c SS |
8081 | } |
8082 | ||
72bf9492 DJ |
8083 | parent->scope_set = 1; |
8084 | return parent->scope; | |
8085 | } | |
8086 | ||
8087 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8088 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8089 | |
43816ebc | 8090 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8091 | partial_die_full_name (struct partial_die_info *pdi, |
8092 | struct dwarf2_cu *cu) | |
8093 | { | |
15d034d0 | 8094 | const char *parent_scope; |
72bf9492 | 8095 | |
98bfdba5 PA |
8096 | /* If this is a template instantiation, we can not work out the |
8097 | template arguments from partial DIEs. So, unfortunately, we have | |
8098 | to go through the full DIEs. At least any work we do building | |
8099 | types here will be reused if full symbols are loaded later. */ | |
8100 | if (pdi->has_template_arguments) | |
8101 | { | |
52356b79 | 8102 | pdi->fixup (cu); |
98bfdba5 PA |
8103 | |
8104 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8105 | { | |
8106 | struct die_info *die; | |
8107 | struct attribute attr; | |
8108 | struct dwarf2_cu *ref_cu = cu; | |
8109 | ||
b64f50a1 | 8110 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8111 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8112 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8113 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8114 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8115 | ||
43816ebc | 8116 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8117 | } |
8118 | } | |
8119 | ||
72bf9492 DJ |
8120 | parent_scope = partial_die_parent_scope (pdi, cu); |
8121 | if (parent_scope == NULL) | |
8122 | return NULL; | |
8123 | else | |
43816ebc TT |
8124 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8125 | pdi->name, 0, cu)); | |
c906108c SS |
8126 | } |
8127 | ||
8128 | static void | |
72bf9492 | 8129 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8130 | { |
518817b3 SM |
8131 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8132 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8133 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8134 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8135 | CORE_ADDR addr = 0; |
15d034d0 | 8136 | const char *actual_name = NULL; |
e142c38c DJ |
8137 | CORE_ADDR baseaddr; |
8138 | ||
b3b3bada | 8139 | baseaddr = objfile->text_section_offset (); |
c906108c | 8140 | |
43816ebc TT |
8141 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8142 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8143 | if (built_actual_name != NULL) |
43816ebc | 8144 | actual_name = built_actual_name.get (); |
63d06c5c | 8145 | |
72bf9492 DJ |
8146 | if (actual_name == NULL) |
8147 | actual_name = pdi->name; | |
8148 | ||
c906108c SS |
8149 | switch (pdi->tag) |
8150 | { | |
b1dc1806 | 8151 | case DW_TAG_inlined_subroutine: |
c906108c | 8152 | case DW_TAG_subprogram: |
79748972 TT |
8153 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8154 | - baseaddr); | |
0a4b0913 AB |
8155 | if (pdi->is_external |
8156 | || cu->language == language_ada | |
8157 | || (cu->language == language_fortran | |
8158 | && pdi->die_parent != NULL | |
8159 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8160 | { | |
8161 | /* Normally, only "external" DIEs are part of the global scope. | |
8162 | But in Ada and Fortran, we want to be able to access nested | |
8163 | procedures globally. So all Ada and Fortran subprograms are | |
8164 | stored in the global scope. */ | |
31edb802 | 8165 | add_psymbol_to_list (actual_name, |
15d034d0 | 8166 | built_actual_name != NULL, |
f47fb265 | 8167 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8168 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8169 | psymbol_placement::GLOBAL, |
79748972 TT |
8170 | addr, |
8171 | cu->language, objfile); | |
c906108c SS |
8172 | } |
8173 | else | |
8174 | { | |
31edb802 | 8175 | add_psymbol_to_list (actual_name, |
15d034d0 | 8176 | built_actual_name != NULL, |
f47fb265 | 8177 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8178 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8179 | psymbol_placement::STATIC, |
1762568f | 8180 | addr, cu->language, objfile); |
c906108c | 8181 | } |
0c1b455e TT |
8182 | |
8183 | if (pdi->main_subprogram && actual_name != NULL) | |
8184 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8185 | break; |
72929c62 | 8186 | case DW_TAG_constant: |
31edb802 | 8187 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8188 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8189 | -1, (pdi->is_external | |
8190 | ? psymbol_placement::GLOBAL | |
8191 | : psymbol_placement::STATIC), | |
8192 | 0, cu->language, objfile); | |
72929c62 | 8193 | break; |
c906108c | 8194 | case DW_TAG_variable: |
95554aad TT |
8195 | if (pdi->d.locdesc) |
8196 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8197 | |
95554aad | 8198 | if (pdi->d.locdesc |
caac4577 JG |
8199 | && addr == 0 |
8200 | && !dwarf2_per_objfile->has_section_at_zero) | |
8201 | { | |
8202 | /* A global or static variable may also have been stripped | |
8203 | out by the linker if unused, in which case its address | |
8204 | will be nullified; do not add such variables into partial | |
8205 | symbol table then. */ | |
8206 | } | |
8207 | else if (pdi->is_external) | |
c906108c SS |
8208 | { |
8209 | /* Global Variable. | |
8210 | Don't enter into the minimal symbol tables as there is | |
8211 | a minimal symbol table entry from the ELF symbols already. | |
8212 | Enter into partial symbol table if it has a location | |
8213 | descriptor or a type. | |
8214 | If the location descriptor is missing, new_symbol will create | |
8215 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8216 | be determined from the minimal symbol table whenever the variable | |
8217 | is referenced. | |
8218 | The address for the partial symbol table entry is not | |
8219 | used by GDB, but it comes in handy for debugging partial symbol | |
8220 | table building. */ | |
8221 | ||
95554aad | 8222 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8223 | add_psymbol_to_list (actual_name, |
15d034d0 | 8224 | built_actual_name != NULL, |
f47fb265 | 8225 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8226 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8227 | psymbol_placement::GLOBAL, |
79748972 | 8228 | addr, cu->language, objfile); |
c906108c SS |
8229 | } |
8230 | else | |
8231 | { | |
ff908ebf AW |
8232 | int has_loc = pdi->d.locdesc != NULL; |
8233 | ||
8234 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8235 | without location descriptors or constant values). */ | |
8236 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8237 | return; |
ff908ebf | 8238 | |
31edb802 | 8239 | add_psymbol_to_list (actual_name, |
15d034d0 | 8240 | built_actual_name != NULL, |
f47fb265 | 8241 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8242 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8243 | psymbol_placement::STATIC, |
79748972 | 8244 | has_loc ? addr : 0, |
f47fb265 | 8245 | cu->language, objfile); |
c906108c SS |
8246 | } |
8247 | break; | |
8248 | case DW_TAG_typedef: | |
8249 | case DW_TAG_base_type: | |
a02abb62 | 8250 | case DW_TAG_subrange_type: |
31edb802 | 8251 | add_psymbol_to_list (actual_name, |
15d034d0 | 8252 | built_actual_name != NULL, |
79748972 | 8253 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8254 | psymbol_placement::STATIC, |
1762568f | 8255 | 0, cu->language, objfile); |
c906108c | 8256 | break; |
74921315 | 8257 | case DW_TAG_imported_declaration: |
72bf9492 | 8258 | case DW_TAG_namespace: |
31edb802 | 8259 | add_psymbol_to_list (actual_name, |
15d034d0 | 8260 | built_actual_name != NULL, |
79748972 | 8261 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8262 | psymbol_placement::GLOBAL, |
1762568f | 8263 | 0, cu->language, objfile); |
72bf9492 | 8264 | break; |
530e8392 | 8265 | case DW_TAG_module: |
a5fd13a9 BH |
8266 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8267 | available without any name. If so, we skip the module as it | |
8268 | doesn't bring any value. */ | |
8269 | if (actual_name != nullptr) | |
31edb802 | 8270 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8271 | built_actual_name != NULL, |
8272 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8273 | psymbol_placement::GLOBAL, | |
8274 | 0, cu->language, objfile); | |
530e8392 | 8275 | break; |
c906108c | 8276 | case DW_TAG_class_type: |
680b30c7 | 8277 | case DW_TAG_interface_type: |
c906108c SS |
8278 | case DW_TAG_structure_type: |
8279 | case DW_TAG_union_type: | |
8280 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8281 | /* Skip external references. The DWARF standard says in the section |
8282 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8283 | structure, union or class type is represented by a structure, | |
8284 | union or class entry that does not have a byte size attribute | |
8285 | and that has a DW_AT_declaration attribute." */ | |
8286 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8287 | return; |
fa4028e9 | 8288 | |
63d06c5c DC |
8289 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8290 | static vs. global. */ | |
31edb802 | 8291 | add_psymbol_to_list (actual_name, |
15d034d0 | 8292 | built_actual_name != NULL, |
79748972 | 8293 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8294 | cu->language == language_cplus |
75aedd27 TT |
8295 | ? psymbol_placement::GLOBAL |
8296 | : psymbol_placement::STATIC, | |
1762568f | 8297 | 0, cu->language, objfile); |
c906108c | 8298 | |
c906108c SS |
8299 | break; |
8300 | case DW_TAG_enumerator: | |
31edb802 | 8301 | add_psymbol_to_list (actual_name, |
15d034d0 | 8302 | built_actual_name != NULL, |
79748972 | 8303 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8304 | cu->language == language_cplus |
75aedd27 TT |
8305 | ? psymbol_placement::GLOBAL |
8306 | : psymbol_placement::STATIC, | |
1762568f | 8307 | 0, cu->language, objfile); |
c906108c SS |
8308 | break; |
8309 | default: | |
8310 | break; | |
8311 | } | |
8312 | } | |
8313 | ||
5c4e30ca DC |
8314 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8315 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8316 | the name of the enclosing namespace. */ | |
91c24f0a | 8317 | |
72bf9492 DJ |
8318 | static void |
8319 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8320 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8321 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8322 | { |
72bf9492 | 8323 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8324 | |
72bf9492 | 8325 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8326 | |
8327 | /* Now scan partial symbols in that namespace. */ | |
8328 | ||
91c24f0a | 8329 | if (pdi->has_children) |
cdc07690 | 8330 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8331 | } |
8332 | ||
5d7cb8df JK |
8333 | /* Read a partial die corresponding to a Fortran module. */ |
8334 | ||
8335 | static void | |
8336 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8337 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8338 | { |
530e8392 KB |
8339 | /* Add a symbol for the namespace. */ |
8340 | ||
8341 | add_partial_symbol (pdi, cu); | |
8342 | ||
f55ee35c | 8343 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8344 | |
8345 | if (pdi->has_children) | |
cdc07690 | 8346 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8347 | } |
8348 | ||
b1dc1806 XR |
8349 | /* Read a partial die corresponding to a subprogram or an inlined |
8350 | subprogram and create a partial symbol for that subprogram. | |
8351 | When the CU language allows it, this routine also defines a partial | |
8352 | symbol for each nested subprogram that this subprogram contains. | |
8353 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8354 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8355 | |
cdc07690 YQ |
8356 | PDI may also be a lexical block, in which case we simply search |
8357 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8358 | Again, this is only performed when the CU language allows this |
8359 | type of definitions. */ | |
8360 | ||
8361 | static void | |
8362 | add_partial_subprogram (struct partial_die_info *pdi, | |
8363 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8364 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8365 | { |
b1dc1806 | 8366 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8367 | { |
8368 | if (pdi->has_pc_info) | |
8369 | { | |
8370 | if (pdi->lowpc < *lowpc) | |
8371 | *lowpc = pdi->lowpc; | |
8372 | if (pdi->highpc > *highpc) | |
8373 | *highpc = pdi->highpc; | |
cdc07690 | 8374 | if (set_addrmap) |
5734ee8b | 8375 | { |
518817b3 | 8376 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
8377 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
8378 | CORE_ADDR baseaddr; | |
b926417a TT |
8379 | CORE_ADDR this_highpc; |
8380 | CORE_ADDR this_lowpc; | |
5734ee8b | 8381 | |
b3b3bada | 8382 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8383 | this_lowpc |
8384 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8385 | pdi->lowpc + baseaddr) | |
8386 | - baseaddr); | |
8387 | this_highpc | |
8388 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8389 | pdi->highpc + baseaddr) | |
8390 | - baseaddr); | |
d320c2b5 | 8391 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8392 | this_lowpc, this_highpc - 1, |
9291a0cd | 8393 | cu->per_cu->v.psymtab); |
5734ee8b | 8394 | } |
481860b3 GB |
8395 | } |
8396 | ||
8397 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8398 | { | |
bc30ff58 | 8399 | if (!pdi->is_declaration) |
e8d05480 JB |
8400 | /* Ignore subprogram DIEs that do not have a name, they are |
8401 | illegal. Do not emit a complaint at this point, we will | |
8402 | do so when we convert this psymtab into a symtab. */ | |
8403 | if (pdi->name) | |
8404 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8405 | } |
8406 | } | |
6e70227d | 8407 | |
bc30ff58 JB |
8408 | if (! pdi->has_children) |
8409 | return; | |
8410 | ||
0a4b0913 | 8411 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8412 | { |
8413 | pdi = pdi->die_child; | |
8414 | while (pdi != NULL) | |
8415 | { | |
52356b79 | 8416 | pdi->fixup (cu); |
bc30ff58 | 8417 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8418 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8419 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8420 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8421 | pdi = pdi->die_sibling; |
8422 | } | |
8423 | } | |
8424 | } | |
8425 | ||
91c24f0a DC |
8426 | /* Read a partial die corresponding to an enumeration type. */ |
8427 | ||
72bf9492 DJ |
8428 | static void |
8429 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8430 | struct dwarf2_cu *cu) | |
91c24f0a | 8431 | { |
72bf9492 | 8432 | struct partial_die_info *pdi; |
91c24f0a DC |
8433 | |
8434 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8435 | add_partial_symbol (enum_pdi, cu); |
8436 | ||
8437 | pdi = enum_pdi->die_child; | |
8438 | while (pdi) | |
91c24f0a | 8439 | { |
72bf9492 | 8440 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8441 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8442 | else |
72bf9492 DJ |
8443 | add_partial_symbol (pdi, cu); |
8444 | pdi = pdi->die_sibling; | |
91c24f0a | 8445 | } |
91c24f0a DC |
8446 | } |
8447 | ||
6caca83c CC |
8448 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8449 | ||
8450 | static unsigned int | |
d521ce57 | 8451 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8452 | { |
8453 | unsigned int bytes_read; | |
8454 | ||
8455 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8456 | } | |
8457 | ||
685af9cd TT |
8458 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8459 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8460 | ||
4bb7a0a7 DJ |
8461 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8462 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8463 | the initial number. */ | |
8464 | ||
8465 | static struct abbrev_info * | |
685af9cd TT |
8466 | peek_die_abbrev (const die_reader_specs &reader, |
8467 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8468 | { |
685af9cd | 8469 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8470 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8471 | unsigned int abbrev_number |
8472 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8473 | |
8474 | if (abbrev_number == 0) | |
8475 | return NULL; | |
8476 | ||
685af9cd | 8477 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8478 | if (!abbrev) |
8479 | { | |
422b9917 | 8480 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8481 | " at offset %s [in module %s]"), |
422b9917 | 8482 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8483 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8484 | } |
8485 | ||
8486 | return abbrev; | |
8487 | } | |
8488 | ||
93311388 DE |
8489 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8490 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8491 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8492 | ||
d521ce57 TT |
8493 | static const gdb_byte * |
8494 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8495 | { |
4bb7a0a7 DJ |
8496 | while (1) |
8497 | { | |
685af9cd TT |
8498 | unsigned int bytes_read; |
8499 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8500 | ||
4bb7a0a7 DJ |
8501 | if (abbrev == NULL) |
8502 | return info_ptr + bytes_read; | |
8503 | else | |
dee91e82 | 8504 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8505 | } |
8506 | } | |
8507 | ||
93311388 DE |
8508 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8509 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8510 | abbrev corresponding to that skipped uleb128 should be passed in |
8511 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8512 | children. */ | |
8513 | ||
d521ce57 TT |
8514 | static const gdb_byte * |
8515 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8516 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8517 | { |
8518 | unsigned int bytes_read; | |
8519 | struct attribute attr; | |
dee91e82 DE |
8520 | bfd *abfd = reader->abfd; |
8521 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8522 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8523 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8524 | unsigned int form, i; |
8525 | ||
8526 | for (i = 0; i < abbrev->num_attrs; i++) | |
8527 | { | |
8528 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8529 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8530 | { | |
18a8505e AT |
8531 | bool ignored; |
8532 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8533 | &ignored); | |
4bb7a0a7 | 8534 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8535 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8536 | else |
b9502d3f | 8537 | { |
0826b30a | 8538 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8539 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8540 | |
8541 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8542 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8543 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8544 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8545 | else |
8546 | return sibling_ptr; | |
8547 | } | |
4bb7a0a7 DJ |
8548 | } |
8549 | ||
8550 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8551 | form = abbrev->attrs[i].form; | |
8552 | skip_attribute: | |
8553 | switch (form) | |
8554 | { | |
4bb7a0a7 | 8555 | case DW_FORM_ref_addr: |
ae411497 TT |
8556 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8557 | and later it is offset sized. */ | |
8558 | if (cu->header.version == 2) | |
8559 | info_ptr += cu->header.addr_size; | |
8560 | else | |
8561 | info_ptr += cu->header.offset_size; | |
8562 | break; | |
36586728 TT |
8563 | case DW_FORM_GNU_ref_alt: |
8564 | info_ptr += cu->header.offset_size; | |
8565 | break; | |
ae411497 | 8566 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8567 | info_ptr += cu->header.addr_size; |
8568 | break; | |
8569 | case DW_FORM_data1: | |
8570 | case DW_FORM_ref1: | |
8571 | case DW_FORM_flag: | |
8fe0f950 | 8572 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8573 | info_ptr += 1; |
8574 | break; | |
2dc7f7b3 | 8575 | case DW_FORM_flag_present: |
43988095 | 8576 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8577 | break; |
4bb7a0a7 DJ |
8578 | case DW_FORM_data2: |
8579 | case DW_FORM_ref2: | |
8fe0f950 | 8580 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8581 | info_ptr += 2; |
8582 | break; | |
8fe0f950 AT |
8583 | case DW_FORM_strx3: |
8584 | info_ptr += 3; | |
8585 | break; | |
4bb7a0a7 DJ |
8586 | case DW_FORM_data4: |
8587 | case DW_FORM_ref4: | |
8fe0f950 | 8588 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8589 | info_ptr += 4; |
8590 | break; | |
8591 | case DW_FORM_data8: | |
8592 | case DW_FORM_ref8: | |
55f1336d | 8593 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8594 | info_ptr += 8; |
8595 | break; | |
0224619f JK |
8596 | case DW_FORM_data16: |
8597 | info_ptr += 16; | |
8598 | break; | |
4bb7a0a7 | 8599 | case DW_FORM_string: |
9b1c24c8 | 8600 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8601 | info_ptr += bytes_read; |
8602 | break; | |
2dc7f7b3 | 8603 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8604 | case DW_FORM_strp: |
36586728 | 8605 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8606 | info_ptr += cu->header.offset_size; |
8607 | break; | |
2dc7f7b3 | 8608 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8609 | case DW_FORM_block: |
8610 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8611 | info_ptr += bytes_read; | |
8612 | break; | |
8613 | case DW_FORM_block1: | |
8614 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8615 | break; | |
8616 | case DW_FORM_block2: | |
8617 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8618 | break; | |
8619 | case DW_FORM_block4: | |
8620 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8621 | break; | |
336d760d | 8622 | case DW_FORM_addrx: |
cf532bd1 | 8623 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8624 | case DW_FORM_sdata: |
8625 | case DW_FORM_udata: | |
8626 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8627 | case DW_FORM_GNU_addr_index: |
8628 | case DW_FORM_GNU_str_index: | |
18a8505e | 8629 | case DW_FORM_rnglistx: |
41144253 | 8630 | case DW_FORM_loclistx: |
d521ce57 | 8631 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8632 | break; |
8633 | case DW_FORM_indirect: | |
8634 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8635 | info_ptr += bytes_read; | |
8636 | /* We need to continue parsing from here, so just go back to | |
8637 | the top. */ | |
8638 | goto skip_attribute; | |
8639 | ||
8640 | default: | |
3e43a32a MS |
8641 | error (_("Dwarf Error: Cannot handle %s " |
8642 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8643 | dwarf_form_name (form), |
8644 | bfd_get_filename (abfd)); | |
8645 | } | |
8646 | } | |
8647 | ||
8648 | if (abbrev->has_children) | |
dee91e82 | 8649 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8650 | else |
8651 | return info_ptr; | |
8652 | } | |
8653 | ||
93311388 | 8654 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8655 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8656 | |
d521ce57 | 8657 | static const gdb_byte * |
dee91e82 DE |
8658 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8659 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8660 | const gdb_byte *info_ptr) |
91c24f0a DC |
8661 | { |
8662 | /* Do we know the sibling already? */ | |
72bf9492 | 8663 | |
91c24f0a DC |
8664 | if (orig_pdi->sibling) |
8665 | return orig_pdi->sibling; | |
8666 | ||
8667 | /* Are there any children to deal with? */ | |
8668 | ||
8669 | if (!orig_pdi->has_children) | |
8670 | return info_ptr; | |
8671 | ||
4bb7a0a7 | 8672 | /* Skip the children the long way. */ |
91c24f0a | 8673 | |
dee91e82 | 8674 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8675 | } |
8676 | ||
257e7a09 | 8677 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8678 | not NULL. */ |
c906108c | 8679 | |
891813be TT |
8680 | void |
8681 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8682 | { |
ed2dc618 SM |
8683 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8684 | = get_dwarf2_per_objfile (objfile); | |
8685 | ||
077cbab2 TT |
8686 | gdb_assert (!readin); |
8687 | /* If this psymtab is constructed from a debug-only objfile, the | |
8688 | has_section_at_zero flag will not necessarily be correct. We | |
8689 | can get the correct value for this flag by looking at the data | |
8690 | associated with the (presumably stripped) associated objfile. */ | |
8691 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8692 | { |
077cbab2 TT |
8693 | struct dwarf2_per_objfile *dpo_backlink |
8694 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8695 | |
077cbab2 TT |
8696 | dwarf2_per_objfile->has_section_at_zero |
8697 | = dpo_backlink->has_section_at_zero; | |
8698 | } | |
98bfdba5 | 8699 | |
8566b89b | 8700 | expand_psymtab (objfile); |
95554aad | 8701 | |
ed2dc618 | 8702 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8703 | } |
9cdd5dbd DE |
8704 | \f |
8705 | /* Reading in full CUs. */ | |
c906108c | 8706 | |
10b3939b DJ |
8707 | /* Add PER_CU to the queue. */ |
8708 | ||
8709 | static void | |
95554aad TT |
8710 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8711 | enum language pretend_language) | |
10b3939b | 8712 | { |
10b3939b | 8713 | per_cu->queued = 1; |
39856def | 8714 | per_cu->dwarf2_per_objfile->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
8715 | } |
8716 | ||
89e63ee4 DE |
8717 | /* If PER_CU is not yet queued, add it to the queue. |
8718 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8719 | dependency. | |
0907af0c | 8720 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8721 | meaning either PER_CU is already queued or it is already loaded. |
8722 | ||
8723 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8724 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8725 | |
8726 | static int | |
89e63ee4 | 8727 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
8728 | struct dwarf2_per_cu_data *per_cu, |
8729 | enum language pretend_language) | |
8730 | { | |
8731 | /* We may arrive here during partial symbol reading, if we need full | |
8732 | DIEs to process an unusual case (e.g. template arguments). Do | |
8733 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 8734 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
8735 | { |
8736 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8737 | return 1; | |
8738 | return 0; | |
8739 | } | |
8740 | ||
8741 | /* Mark the dependence relation so that we don't flush PER_CU | |
8742 | too early. */ | |
89e63ee4 DE |
8743 | if (dependent_cu != NULL) |
8744 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8745 | |
8746 | /* If it's already on the queue, we have nothing to do. */ | |
8747 | if (per_cu->queued) | |
8748 | return 0; | |
8749 | ||
8750 | /* If the compilation unit is already loaded, just mark it as | |
8751 | used. */ | |
8752 | if (per_cu->cu != NULL) | |
8753 | { | |
8754 | per_cu->cu->last_used = 0; | |
8755 | return 0; | |
8756 | } | |
8757 | ||
8758 | /* Add it to the queue. */ | |
8759 | queue_comp_unit (per_cu, pretend_language); | |
8760 | ||
8761 | return 1; | |
8762 | } | |
8763 | ||
10b3939b DJ |
8764 | /* Process the queue. */ |
8765 | ||
8766 | static void | |
ed2dc618 | 8767 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8768 | { |
b4f54984 | 8769 | if (dwarf_read_debug) |
45cfd468 DE |
8770 | { |
8771 | fprintf_unfiltered (gdb_stdlog, | |
8772 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8773 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8774 | } |
8775 | ||
03dd20cc DJ |
8776 | /* The queue starts out with one item, but following a DIE reference |
8777 | may load a new CU, adding it to the end of the queue. */ | |
39856def | 8778 | while (!dwarf2_per_objfile->queue.empty ()) |
10b3939b | 8779 | { |
39856def TT |
8780 | dwarf2_queue_item &item = dwarf2_per_objfile->queue.front (); |
8781 | ||
cc12ce38 | 8782 | if ((dwarf2_per_objfile->using_index |
39856def TT |
8783 | ? !item.per_cu->v.quick->compunit_symtab |
8784 | : (item.per_cu->v.psymtab && !item.per_cu->v.psymtab->readin)) | |
cc12ce38 | 8785 | /* Skip dummy CUs. */ |
39856def | 8786 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8787 | { |
39856def | 8788 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8789 | unsigned int debug_print_threshold; |
247f5c4f | 8790 | char buf[100]; |
f4dc4d17 | 8791 | |
247f5c4f | 8792 | if (per_cu->is_debug_types) |
f4dc4d17 | 8793 | { |
247f5c4f DE |
8794 | struct signatured_type *sig_type = |
8795 | (struct signatured_type *) per_cu; | |
8796 | ||
9d8780f0 | 8797 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 8798 | hex_string (sig_type->signature), |
9d8780f0 | 8799 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
8800 | /* There can be 100s of TUs. |
8801 | Only print them in verbose mode. */ | |
8802 | debug_print_threshold = 2; | |
f4dc4d17 | 8803 | } |
247f5c4f | 8804 | else |
73be47f5 | 8805 | { |
9d8780f0 SM |
8806 | sprintf (buf, "CU at offset %s", |
8807 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
8808 | debug_print_threshold = 1; |
8809 | } | |
247f5c4f | 8810 | |
b4f54984 | 8811 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8812 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
8813 | |
8814 | if (per_cu->is_debug_types) | |
39856def | 8815 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8816 | else |
39856def | 8817 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8818 | |
b4f54984 | 8819 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8820 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 8821 | } |
10b3939b | 8822 | |
39856def TT |
8823 | item.per_cu->queued = 0; |
8824 | dwarf2_per_objfile->queue.pop (); | |
10b3939b DJ |
8825 | } |
8826 | ||
b4f54984 | 8827 | if (dwarf_read_debug) |
45cfd468 DE |
8828 | { |
8829 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 8830 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 8831 | } |
10b3939b DJ |
8832 | } |
8833 | ||
10b3939b DJ |
8834 | /* Read in full symbols for PST, and anything it depends on. */ |
8835 | ||
8566b89b TT |
8836 | void |
8837 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8838 | { |
8566b89b | 8839 | if (readin) |
95554aad TT |
8840 | return; |
8841 | ||
48993951 | 8842 | expand_dependencies (objfile); |
aaa75496 | 8843 | |
b83470bf TT |
8844 | dw2_do_instantiate_symtab (per_cu_data, false); |
8845 | gdb_assert (get_compunit_symtab () != nullptr); | |
10b3939b DJ |
8846 | } |
8847 | ||
dee91e82 DE |
8848 | /* Trivial hash function for die_info: the hash value of a DIE |
8849 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8850 | |
dee91e82 DE |
8851 | static hashval_t |
8852 | die_hash (const void *item) | |
10b3939b | 8853 | { |
9a3c8263 | 8854 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8855 | |
9c541725 | 8856 | return to_underlying (die->sect_off); |
dee91e82 | 8857 | } |
63d06c5c | 8858 | |
dee91e82 DE |
8859 | /* Trivial comparison function for die_info structures: two DIEs |
8860 | are equal if they have the same offset. */ | |
98bfdba5 | 8861 | |
dee91e82 DE |
8862 | static int |
8863 | die_eq (const void *item_lhs, const void *item_rhs) | |
8864 | { | |
9a3c8263 SM |
8865 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8866 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8867 | |
9c541725 | 8868 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8869 | } |
c906108c | 8870 | |
c0ab21c2 | 8871 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 8872 | |
dee91e82 | 8873 | static void |
c0ab21c2 TT |
8874 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
8875 | bool skip_partial, | |
8876 | enum language pretend_language) | |
dee91e82 | 8877 | { |
c0ab21c2 TT |
8878 | gdb_assert (! this_cu->is_debug_types); |
8879 | ||
6751ebae | 8880 | cutu_reader reader (this_cu, NULL, 1, skip_partial); |
c0ab21c2 TT |
8881 | if (reader.dummy_p) |
8882 | return; | |
8883 | ||
8884 | struct dwarf2_cu *cu = reader.cu; | |
8885 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8886 | |
dee91e82 DE |
8887 | gdb_assert (cu->die_hash == NULL); |
8888 | cu->die_hash = | |
8889 | htab_create_alloc_ex (cu->header.length / 12, | |
8890 | die_hash, | |
8891 | die_eq, | |
8892 | NULL, | |
8893 | &cu->comp_unit_obstack, | |
8894 | hashtab_obstack_allocate, | |
8895 | dummy_obstack_deallocate); | |
e142c38c | 8896 | |
3e225074 | 8897 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8898 | reader.comp_unit_die->child |
8899 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8900 | &info_ptr, reader.comp_unit_die); | |
8901 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8902 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8903 | |
8904 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8905 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8906 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8907 | or we won't be able to build types correctly. |
8908 | Similarly, if we do not read the producer, we can not apply | |
8909 | producer-specific interpretation. */ | |
c0ab21c2 | 8910 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8911 | |
8912 | reader.keep (); | |
10b3939b DJ |
8913 | } |
8914 | ||
3da10d80 KS |
8915 | /* Add a DIE to the delayed physname list. */ |
8916 | ||
8917 | static void | |
8918 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8919 | const char *name, struct die_info *die, | |
8920 | struct dwarf2_cu *cu) | |
8921 | { | |
8922 | struct delayed_method_info mi; | |
8923 | mi.type = type; | |
8924 | mi.fnfield_index = fnfield_index; | |
8925 | mi.index = index; | |
8926 | mi.name = name; | |
8927 | mi.die = die; | |
c89b44cd | 8928 | cu->method_list.push_back (mi); |
3da10d80 KS |
8929 | } |
8930 | ||
3693fdb3 PA |
8931 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
8932 | "const" / "volatile". If so, decrements LEN by the length of the | |
8933 | modifier and return true. Otherwise return false. */ | |
8934 | ||
8935 | template<size_t N> | |
8936 | static bool | |
8937 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
8938 | { | |
8939 | size_t mod_len = sizeof (mod) - 1; | |
8940 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
8941 | { | |
8942 | len -= mod_len; | |
8943 | return true; | |
8944 | } | |
8945 | return false; | |
8946 | } | |
8947 | ||
3da10d80 KS |
8948 | /* Compute the physnames of any methods on the CU's method list. |
8949 | ||
8950 | The computation of method physnames is delayed in order to avoid the | |
8951 | (bad) condition that one of the method's formal parameters is of an as yet | |
8952 | incomplete type. */ | |
8953 | ||
8954 | static void | |
8955 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
8956 | { | |
3693fdb3 | 8957 | /* Only C++ delays computing physnames. */ |
c89b44cd | 8958 | if (cu->method_list.empty ()) |
3693fdb3 PA |
8959 | return; |
8960 | gdb_assert (cu->language == language_cplus); | |
8961 | ||
52941706 | 8962 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 8963 | { |
1d06ead6 | 8964 | const char *physname; |
3da10d80 | 8965 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
8966 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
8967 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
8968 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 8969 | = physname ? physname : ""; |
3693fdb3 PA |
8970 | |
8971 | /* Since there's no tag to indicate whether a method is a | |
8972 | const/volatile overload, extract that information out of the | |
8973 | demangled name. */ | |
8974 | if (physname != NULL) | |
8975 | { | |
8976 | size_t len = strlen (physname); | |
8977 | ||
8978 | while (1) | |
8979 | { | |
8980 | if (physname[len] == ')') /* shortcut */ | |
8981 | break; | |
8982 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 8983 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 8984 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 8985 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
8986 | else |
8987 | break; | |
8988 | } | |
8989 | } | |
3da10d80 | 8990 | } |
c89b44cd TT |
8991 | |
8992 | /* The list is no longer needed. */ | |
8993 | cu->method_list.clear (); | |
3da10d80 KS |
8994 | } |
8995 | ||
a766d390 DE |
8996 | /* Go objects should be embedded in a DW_TAG_module DIE, |
8997 | and it's not clear if/how imported objects will appear. | |
8998 | To keep Go support simple until that's worked out, | |
8999 | go back through what we've read and create something usable. | |
9000 | We could do this while processing each DIE, and feels kinda cleaner, | |
9001 | but that way is more invasive. | |
9002 | This is to, for example, allow the user to type "p var" or "b main" | |
9003 | without having to specify the package name, and allow lookups | |
9004 | of module.object to work in contexts that use the expression | |
9005 | parser. */ | |
9006 | ||
9007 | static void | |
9008 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9009 | { | |
421d1616 | 9010 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9011 | struct pending *list; |
9012 | int i; | |
9013 | ||
c24bdb02 | 9014 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9015 | list != NULL; |
9016 | list = list->next) | |
a766d390 DE |
9017 | { |
9018 | for (i = 0; i < list->nsyms; ++i) | |
9019 | { | |
9020 | struct symbol *sym = list->symbol[i]; | |
9021 | ||
c1b5c1eb | 9022 | if (sym->language () == language_go |
a766d390 DE |
9023 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9024 | { | |
421d1616 TT |
9025 | gdb::unique_xmalloc_ptr<char> this_package_name |
9026 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9027 | |
9028 | if (this_package_name == NULL) | |
9029 | continue; | |
9030 | if (package_name == NULL) | |
421d1616 | 9031 | package_name = std::move (this_package_name); |
a766d390 DE |
9032 | else |
9033 | { | |
518817b3 SM |
9034 | struct objfile *objfile |
9035 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9036 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9037 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9038 | (symbol_symtab (sym) != NULL |
9039 | ? symtab_to_filename_for_display | |
9040 | (symbol_symtab (sym)) | |
e3b94546 | 9041 | : objfile_name (objfile)), |
421d1616 | 9042 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9043 | } |
9044 | } | |
9045 | } | |
9046 | } | |
9047 | ||
9048 | if (package_name != NULL) | |
9049 | { | |
518817b3 | 9050 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 9051 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9052 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9053 | saved_package_name); | |
a766d390 DE |
9054 | struct symbol *sym; |
9055 | ||
e623cf5d | 9056 | sym = allocate_symbol (objfile); |
d3ecddab | 9057 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9058 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9059 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9060 | e.g., "main" finds the "main" module and not C's main(). */ | |
9061 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9062 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9063 | SYMBOL_TYPE (sym) = type; |
9064 | ||
c24bdb02 | 9065 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9066 | } |
9067 | } | |
9068 | ||
c9317f21 TT |
9069 | /* Allocate a fully-qualified name consisting of the two parts on the |
9070 | obstack. */ | |
9071 | ||
9072 | static const char * | |
9073 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9074 | { | |
9075 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9076 | } | |
9077 | ||
9078 | /* A helper that allocates a struct discriminant_info to attach to a | |
9079 | union type. */ | |
9080 | ||
9081 | static struct discriminant_info * | |
9082 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9083 | int default_index) | |
9084 | { | |
9085 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9086 | gdb_assert (discriminant_index == -1 |
9087 | || (discriminant_index >= 0 | |
9088 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9089 | gdb_assert (default_index == -1 |
c7b15a66 | 9090 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9091 | |
9092 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9093 | ||
9094 | struct discriminant_info *disc | |
9095 | = ((struct discriminant_info *) | |
9096 | TYPE_ZALLOC (type, | |
9097 | offsetof (struct discriminant_info, discriminants) | |
9098 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9099 | disc->default_index = default_index; | |
9100 | disc->discriminant_index = discriminant_index; | |
9101 | ||
9102 | struct dynamic_prop prop; | |
9103 | prop.kind = PROP_UNDEFINED; | |
9104 | prop.data.baton = disc; | |
9105 | ||
9106 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9107 | ||
9108 | return disc; | |
9109 | } | |
9110 | ||
9111 | /* Some versions of rustc emitted enums in an unusual way. | |
9112 | ||
9113 | Ordinary enums were emitted as unions. The first element of each | |
9114 | structure in the union was named "RUST$ENUM$DISR". This element | |
9115 | held the discriminant. | |
9116 | ||
9117 | These versions of Rust also implemented the "non-zero" | |
9118 | optimization. When the enum had two values, and one is empty and | |
9119 | the other holds a pointer that cannot be zero, the pointer is used | |
9120 | as the discriminant, with a zero value meaning the empty variant. | |
9121 | Here, the union's first member is of the form | |
9122 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9123 | where the fieldnos are the indices of the fields that should be | |
9124 | traversed in order to find the field (which may be several fields deep) | |
9125 | and the variantname is the name of the variant of the case when the | |
9126 | field is zero. | |
9127 | ||
9128 | This function recognizes whether TYPE is of one of these forms, | |
9129 | and, if so, smashes it to be a variant type. */ | |
9130 | ||
9131 | static void | |
9132 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9133 | { | |
9134 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9135 | ||
9136 | /* We don't need to deal with empty enums. */ | |
9137 | if (TYPE_NFIELDS (type) == 0) | |
9138 | return; | |
9139 | ||
9140 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9141 | if (TYPE_NFIELDS (type) == 1 | |
9142 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9143 | { | |
9144 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9145 | ||
9146 | /* Decode the field name to find the offset of the | |
9147 | discriminant. */ | |
9148 | ULONGEST bit_offset = 0; | |
9149 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9150 | while (name[0] >= '0' && name[0] <= '9') | |
9151 | { | |
9152 | char *tail; | |
9153 | unsigned long index = strtoul (name, &tail, 10); | |
9154 | name = tail; | |
9155 | if (*name != '$' | |
9156 | || index >= TYPE_NFIELDS (field_type) | |
9157 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9158 | != FIELD_LOC_KIND_BITPOS)) | |
9159 | { | |
b98664d3 | 9160 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9161 | "[in module %s]"), |
9162 | TYPE_FIELD_NAME (type, 0), | |
9163 | objfile_name (objfile)); | |
9164 | return; | |
9165 | } | |
9166 | ++name; | |
9167 | ||
9168 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9169 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9170 | } | |
9171 | ||
9172 | /* Make a union to hold the variants. */ | |
9173 | struct type *union_type = alloc_type (objfile); | |
9174 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9175 | TYPE_NFIELDS (union_type) = 3; | |
9176 | TYPE_FIELDS (union_type) | |
9177 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9178 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9179 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9180 | |
9181 | /* Put the discriminant must at index 0. */ | |
9182 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9183 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9184 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9185 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9186 | ||
9187 | /* The order of fields doesn't really matter, so put the real | |
9188 | field at index 1 and the data-less field at index 2. */ | |
9189 | struct discriminant_info *disc | |
9190 | = alloc_discriminant_info (union_type, 0, 1); | |
9191 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9192 | TYPE_FIELD_NAME (union_type, 1) | |
9193 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9194 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9195 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9196 | TYPE_FIELD_NAME (union_type, 1)); | |
9197 | ||
9198 | const char *dataless_name | |
9199 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9200 | name); | |
9201 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9202 | dataless_name); | |
9203 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9204 | /* NAME points into the original discriminant name, which | |
9205 | already has the correct lifetime. */ | |
9206 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9207 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9208 | disc->discriminants[2] = 0; | |
9209 | ||
9210 | /* Smash this type to be a structure type. We have to do this | |
9211 | because the type has already been recorded. */ | |
9212 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9213 | TYPE_NFIELDS (type) = 1; | |
9214 | TYPE_FIELDS (type) | |
9215 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9216 | ||
9217 | /* Install the variant part. */ | |
9218 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9219 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9220 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9221 | } | |
77c2dba3 TT |
9222 | /* A union with a single anonymous field is probably an old-style |
9223 | univariant enum. */ | |
9224 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9225 | { |
c9317f21 TT |
9226 | /* Smash this type to be a structure type. We have to do this |
9227 | because the type has already been recorded. */ | |
9228 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9229 | ||
9230 | /* Make a union to hold the variants. */ | |
9231 | struct type *union_type = alloc_type (objfile); | |
9232 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9233 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9234 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9235 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9236 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9237 | ||
9238 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9239 | const char *variant_name | |
9240 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9241 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9242 | TYPE_NAME (field_type) | |
9243 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9244 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9245 | |
9246 | /* Install the union in the outer struct type. */ | |
9247 | TYPE_NFIELDS (type) = 1; | |
9248 | TYPE_FIELDS (type) | |
9249 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9250 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9251 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9252 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9253 | ||
9254 | alloc_discriminant_info (union_type, -1, 0); | |
9255 | } | |
9256 | else | |
9257 | { | |
9258 | struct type *disr_type = nullptr; | |
9259 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9260 | { | |
9261 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9262 | ||
a037790e TT |
9263 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9264 | { | |
9265 | /* All fields of a true enum will be structs. */ | |
9266 | return; | |
9267 | } | |
9268 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9269 | { |
9270 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9271 | disr_type = nullptr; |
c9317f21 TT |
9272 | } |
9273 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9274 | "RUST$ENUM$DISR") != 0) | |
9275 | { | |
9276 | /* Not a Rust enum. */ | |
9277 | return; | |
9278 | } | |
9279 | else | |
9280 | { | |
9281 | /* Found one. */ | |
9282 | break; | |
9283 | } | |
9284 | } | |
9285 | ||
9286 | /* If we got here without a discriminant, then it's probably | |
9287 | just a union. */ | |
9288 | if (disr_type == nullptr) | |
9289 | return; | |
9290 | ||
9291 | /* Smash this type to be a structure type. We have to do this | |
9292 | because the type has already been recorded. */ | |
9293 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9294 | ||
9295 | /* Make a union to hold the variants. */ | |
9296 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
9297 | struct type *union_type = alloc_type (objfile); | |
9298 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9299 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
9300 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9301 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9302 | TYPE_FIELDS (union_type) |
9303 | = (struct field *) TYPE_ZALLOC (union_type, | |
9304 | (TYPE_NFIELDS (union_type) | |
9305 | * sizeof (struct field))); | |
9306 | ||
9307 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
9308 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
9309 | ||
9310 | /* Install the discriminant at index 0 in the union. */ | |
9311 | TYPE_FIELD (union_type, 0) = *disr_field; | |
9312 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9313 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9314 | ||
9315 | /* Install the union in the outer struct type. */ | |
9316 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9317 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9318 | TYPE_NFIELDS (type) = 1; | |
9319 | ||
9320 | /* Set the size and offset of the union type. */ | |
9321 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9322 | ||
9323 | /* We need a way to find the correct discriminant given a | |
9324 | variant name. For convenience we build a map here. */ | |
9325 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9326 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9327 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9328 | { | |
9329 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9330 | { | |
9331 | const char *name | |
9332 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9333 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9334 | } | |
9335 | } | |
9336 | ||
9337 | int n_fields = TYPE_NFIELDS (union_type); | |
9338 | struct discriminant_info *disc | |
9339 | = alloc_discriminant_info (union_type, 0, -1); | |
9340 | /* Skip the discriminant here. */ | |
9341 | for (int i = 1; i < n_fields; ++i) | |
9342 | { | |
9343 | /* Find the final word in the name of this variant's type. | |
9344 | That name can be used to look up the correct | |
9345 | discriminant. */ | |
9346 | const char *variant_name | |
9347 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
9348 | i))); | |
9349 | ||
9350 | auto iter = discriminant_map.find (variant_name); | |
9351 | if (iter != discriminant_map.end ()) | |
9352 | disc->discriminants[i] = iter->second; | |
9353 | ||
bedda9ac | 9354 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 9355 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
9356 | if (TYPE_NFIELDS (sub_type) > 0) |
9357 | { | |
9358 | --TYPE_NFIELDS (sub_type); | |
9359 | ++TYPE_FIELDS (sub_type); | |
9360 | } | |
c9317f21 TT |
9361 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
9362 | TYPE_NAME (sub_type) | |
9363 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9364 | TYPE_NAME (type), variant_name); | |
9365 | } | |
9366 | } | |
9367 | } | |
9368 | ||
9369 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9370 | ||
9371 | static void | |
9372 | rust_union_quirks (struct dwarf2_cu *cu) | |
9373 | { | |
9374 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9375 | for (type *type_ : cu->rust_unions) |
9376 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9377 | /* We don't need this any more. */ |
9378 | cu->rust_unions.clear (); | |
c9317f21 TT |
9379 | } |
9380 | ||
95554aad TT |
9381 | /* Return the symtab for PER_CU. This works properly regardless of |
9382 | whether we're using the index or psymtabs. */ | |
9383 | ||
43f3e411 DE |
9384 | static struct compunit_symtab * |
9385 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9386 | { |
ed2dc618 | 9387 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9388 | ? per_cu->v.quick->compunit_symtab |
9389 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9390 | } |
9391 | ||
9392 | /* A helper function for computing the list of all symbol tables | |
9393 | included by PER_CU. */ | |
9394 | ||
9395 | static void | |
4c39bc03 | 9396 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9397 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9398 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9399 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9400 | { |
9401 | void **slot; | |
43f3e411 | 9402 | struct compunit_symtab *cust; |
95554aad TT |
9403 | |
9404 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9405 | if (*slot != NULL) | |
9406 | { | |
9407 | /* This inclusion and its children have been processed. */ | |
9408 | return; | |
9409 | } | |
9410 | ||
9411 | *slot = per_cu; | |
9412 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9413 | cust = get_compunit_symtab (per_cu); |
9414 | if (cust != NULL) | |
ec94af83 DE |
9415 | { |
9416 | /* If this is a type unit only add its symbol table if we haven't | |
9417 | seen it yet (type unit per_cu's can share symtabs). */ | |
9418 | if (per_cu->is_debug_types) | |
9419 | { | |
43f3e411 | 9420 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9421 | if (*slot == NULL) |
9422 | { | |
43f3e411 | 9423 | *slot = cust; |
4c39bc03 | 9424 | result->push_back (cust); |
43f3e411 DE |
9425 | if (cust->user == NULL) |
9426 | cust->user = immediate_parent; | |
ec94af83 DE |
9427 | } |
9428 | } | |
9429 | else | |
f9125b6c | 9430 | { |
4c39bc03 | 9431 | result->push_back (cust); |
43f3e411 DE |
9432 | if (cust->user == NULL) |
9433 | cust->user = immediate_parent; | |
f9125b6c | 9434 | } |
ec94af83 | 9435 | } |
95554aad | 9436 | |
ae640021 AB |
9437 | if (!per_cu->imported_symtabs_empty ()) |
9438 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9439 | { | |
9440 | recursively_compute_inclusions (result, all_children, | |
9441 | all_type_symtabs, ptr, cust); | |
9442 | } | |
95554aad TT |
9443 | } |
9444 | ||
43f3e411 | 9445 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9446 | PER_CU. */ |
9447 | ||
9448 | static void | |
43f3e411 | 9449 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9450 | { |
f4dc4d17 DE |
9451 | gdb_assert (! per_cu->is_debug_types); |
9452 | ||
ae640021 | 9453 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9454 | { |
ae640021 | 9455 | int len; |
4c39bc03 | 9456 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9457 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9458 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9459 | |
9460 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9461 | if (cust == NULL) |
95554aad TT |
9462 | return; |
9463 | ||
9464 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9465 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9466 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9467 | NULL, xcalloc, xfree); | |
95554aad | 9468 | |
ae640021 | 9469 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9470 | { |
9471 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9472 | all_type_symtabs, ptr, cust); |
ec94af83 | 9473 | } |
95554aad | 9474 | |
ec94af83 | 9475 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9476 | len = result_symtabs.size (); |
43f3e411 | 9477 | cust->includes |
ed2dc618 | 9478 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9479 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9480 | memcpy (cust->includes, result_symtabs.data (), |
9481 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9482 | cust->includes[len] = NULL; |
95554aad | 9483 | |
95554aad | 9484 | htab_delete (all_children); |
ec94af83 | 9485 | htab_delete (all_type_symtabs); |
95554aad TT |
9486 | } |
9487 | } | |
9488 | ||
9489 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9490 | read. */ | |
9491 | ||
9492 | static void | |
ed2dc618 | 9493 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9494 | { |
71b73764 | 9495 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9496 | { |
9497 | if (! iter->is_debug_types) | |
43f3e411 | 9498 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9499 | } |
95554aad | 9500 | |
c5d0225d | 9501 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9502 | } |
9503 | ||
9cdd5dbd | 9504 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9505 | already been loaded into memory. */ |
9506 | ||
9507 | static void | |
95554aad TT |
9508 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9509 | enum language pretend_language) | |
10b3939b | 9510 | { |
10b3939b | 9511 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9512 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9513 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 9514 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 9515 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9516 | struct compunit_symtab *cust; |
10b3939b | 9517 | CORE_ADDR baseaddr; |
4359dff1 | 9518 | struct block *static_block; |
3e29f34a | 9519 | CORE_ADDR addr; |
10b3939b | 9520 | |
b3b3bada | 9521 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9522 | |
c89b44cd TT |
9523 | /* Clear the list here in case something was left over. */ |
9524 | cu->method_list.clear (); | |
10b3939b | 9525 | |
95554aad TT |
9526 | cu->language = pretend_language; |
9527 | cu->language_defn = language_def (cu->language); | |
9528 | ||
c906108c | 9529 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9530 | process_die (cu->dies, cu); |
c906108c | 9531 | |
a766d390 DE |
9532 | /* For now fudge the Go package. */ |
9533 | if (cu->language == language_go) | |
9534 | fixup_go_packaging (cu); | |
9535 | ||
5f48f8f3 | 9536 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9537 | should be complete, and it should now be safe to compute all of the |
9538 | physnames. */ | |
9539 | compute_delayed_physnames (cu); | |
3da10d80 | 9540 | |
c9317f21 TT |
9541 | if (cu->language == language_rust) |
9542 | rust_union_quirks (cu); | |
9543 | ||
fae299cd DC |
9544 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9545 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9546 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9547 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9548 | |
3e29f34a | 9549 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9550 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9551 | |
9552 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9553 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9554 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9555 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9556 | this comp unit. */ | |
9557 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9558 | ||
c24bdb02 | 9559 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9560 | SECT_OFF_TEXT (objfile), |
9561 | 0); | |
c906108c | 9562 | |
43f3e411 | 9563 | if (cust != NULL) |
c906108c | 9564 | { |
df15bd07 | 9565 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9566 | |
8be455d7 JK |
9567 | /* Set symtab language to language from DW_AT_language. If the |
9568 | compilation is from a C file generated by language preprocessors, do | |
9569 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9570 | if (!(cu->language == language_c |
40e3ad0e | 9571 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9572 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9573 | |
9574 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9575 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9576 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9577 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9578 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9579 | |
9580 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9581 | needed, it would be wrong due to missing DW_AT_producer there. | |
9582 | ||
9583 | Still one can confuse GDB by using non-standard GCC compilation | |
9584 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9585 | */ |
ab260dad | 9586 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9587 | cust->locations_valid = 1; |
e0d00bc7 JK |
9588 | |
9589 | if (gcc_4_minor >= 5) | |
43f3e411 | 9590 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9591 | |
43f3e411 | 9592 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9593 | } |
9291a0cd TT |
9594 | |
9595 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9596 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
9597 | else |
9598 | { | |
891813be | 9599 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9600 | pst->compunit_symtab = cust; |
6d94535f | 9601 | pst->readin = true; |
9291a0cd | 9602 | } |
c906108c | 9603 | |
95554aad | 9604 | /* Push it for inclusion processing later. */ |
c5d0225d | 9605 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
9606 | |
9607 | /* Not needed any more. */ | |
c24bdb02 | 9608 | cu->reset_builder (); |
f4dc4d17 | 9609 | } |
45cfd468 | 9610 | |
f4dc4d17 DE |
9611 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9612 | already been loaded into memory. */ | |
9613 | ||
9614 | static void | |
9615 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
9616 | enum language pretend_language) | |
9617 | { | |
9618 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
9619 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9620 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 9621 | struct compunit_symtab *cust; |
0186c6a7 DE |
9622 | struct signatured_type *sig_type; |
9623 | ||
9624 | gdb_assert (per_cu->is_debug_types); | |
9625 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9626 | |
c89b44cd TT |
9627 | /* Clear the list here in case something was left over. */ |
9628 | cu->method_list.clear (); | |
f4dc4d17 | 9629 | |
f4dc4d17 DE |
9630 | cu->language = pretend_language; |
9631 | cu->language_defn = language_def (cu->language); | |
9632 | ||
9633 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9634 | process_die (cu->dies, cu); | |
9635 | ||
9636 | /* For now fudge the Go package. */ | |
9637 | if (cu->language == language_go) | |
9638 | fixup_go_packaging (cu); | |
9639 | ||
5f48f8f3 | 9640 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9641 | should be complete, and it should now be safe to compute all of the |
9642 | physnames. */ | |
9643 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9644 | |
c9317f21 TT |
9645 | if (cu->language == language_rust) |
9646 | rust_union_quirks (cu); | |
9647 | ||
f4dc4d17 DE |
9648 | /* TUs share symbol tables. |
9649 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9650 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9651 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 9652 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 9653 | { |
c24bdb02 KS |
9654 | buildsym_compunit *builder = cu->get_builder (); |
9655 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 9656 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 9657 | |
43f3e411 | 9658 | if (cust != NULL) |
f4dc4d17 DE |
9659 | { |
9660 | /* Set symtab language to language from DW_AT_language. If the | |
9661 | compilation is from a C file generated by language preprocessors, | |
9662 | do not set the language if it was already deduced by | |
9663 | start_subfile. */ | |
43f3e411 DE |
9664 | if (!(cu->language == language_c |
9665 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9666 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9667 | } |
9668 | } | |
9669 | else | |
9670 | { | |
c24bdb02 | 9671 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 9672 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
9673 | } |
9674 | ||
9675 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9676 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
9677 | else |
9678 | { | |
891813be | 9679 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9680 | pst->compunit_symtab = cust; |
6d94535f | 9681 | pst->readin = true; |
45cfd468 | 9682 | } |
804d2729 TT |
9683 | |
9684 | /* Not needed any more. */ | |
c24bdb02 | 9685 | cu->reset_builder (); |
c906108c SS |
9686 | } |
9687 | ||
95554aad TT |
9688 | /* Process an imported unit DIE. */ |
9689 | ||
9690 | static void | |
9691 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9692 | { | |
9693 | struct attribute *attr; | |
9694 | ||
f4dc4d17 DE |
9695 | /* For now we don't handle imported units in type units. */ |
9696 | if (cu->per_cu->is_debug_types) | |
9697 | { | |
9698 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9699 | " supported in type units [in module %s]"), | |
518817b3 | 9700 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9701 | } |
9702 | ||
95554aad TT |
9703 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9704 | if (attr != NULL) | |
9705 | { | |
0826b30a | 9706 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 PA |
9707 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
9708 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 9709 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 9710 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 9711 | |
58990295 TV |
9712 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9713 | into another compilation unit, at root level. Regard this as a hint, | |
9714 | and ignore it. */ | |
9715 | if (die->parent && die->parent->parent == NULL | |
9716 | && per_cu->unit_type == DW_UT_compile | |
9717 | && per_cu->lang == language_cplus) | |
9718 | return; | |
9719 | ||
69d751e3 | 9720 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 9721 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 9722 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 9723 | |
ae640021 | 9724 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9725 | } |
9726 | } | |
9727 | ||
4c8aa72d PA |
9728 | /* RAII object that represents a process_die scope: i.e., |
9729 | starts/finishes processing a DIE. */ | |
9730 | class process_die_scope | |
adde2bff | 9731 | { |
4c8aa72d PA |
9732 | public: |
9733 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9734 | : m_die (die), m_cu (cu) | |
9735 | { | |
9736 | /* We should only be processing DIEs not already in process. */ | |
9737 | gdb_assert (!m_die->in_process); | |
9738 | m_die->in_process = true; | |
9739 | } | |
8c3cb9fa | 9740 | |
4c8aa72d PA |
9741 | ~process_die_scope () |
9742 | { | |
9743 | m_die->in_process = false; | |
9744 | ||
9745 | /* If we're done processing the DIE for the CU that owns the line | |
9746 | header, we don't need the line header anymore. */ | |
9747 | if (m_cu->line_header_die_owner == m_die) | |
9748 | { | |
9749 | delete m_cu->line_header; | |
9750 | m_cu->line_header = NULL; | |
9751 | m_cu->line_header_die_owner = NULL; | |
9752 | } | |
9753 | } | |
9754 | ||
9755 | private: | |
9756 | die_info *m_die; | |
9757 | dwarf2_cu *m_cu; | |
9758 | }; | |
adde2bff | 9759 | |
c906108c SS |
9760 | /* Process a die and its children. */ |
9761 | ||
9762 | static void | |
e7c27a73 | 9763 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9764 | { |
4c8aa72d | 9765 | process_die_scope scope (die, cu); |
adde2bff | 9766 | |
c906108c SS |
9767 | switch (die->tag) |
9768 | { | |
9769 | case DW_TAG_padding: | |
9770 | break; | |
9771 | case DW_TAG_compile_unit: | |
95554aad | 9772 | case DW_TAG_partial_unit: |
e7c27a73 | 9773 | read_file_scope (die, cu); |
c906108c | 9774 | break; |
348e048f DE |
9775 | case DW_TAG_type_unit: |
9776 | read_type_unit_scope (die, cu); | |
9777 | break; | |
c906108c | 9778 | case DW_TAG_subprogram: |
0a4b0913 AB |
9779 | /* Nested subprograms in Fortran get a prefix. */ |
9780 | if (cu->language == language_fortran | |
9781 | && die->parent != NULL | |
9782 | && die->parent->tag == DW_TAG_subprogram) | |
9783 | cu->processing_has_namespace_info = true; | |
9784 | /* Fall through. */ | |
c906108c | 9785 | case DW_TAG_inlined_subroutine: |
edb3359d | 9786 | read_func_scope (die, cu); |
c906108c SS |
9787 | break; |
9788 | case DW_TAG_lexical_block: | |
14898363 L |
9789 | case DW_TAG_try_block: |
9790 | case DW_TAG_catch_block: | |
e7c27a73 | 9791 | read_lexical_block_scope (die, cu); |
c906108c | 9792 | break; |
216f72a1 | 9793 | case DW_TAG_call_site: |
96408a79 SA |
9794 | case DW_TAG_GNU_call_site: |
9795 | read_call_site_scope (die, cu); | |
9796 | break; | |
c906108c | 9797 | case DW_TAG_class_type: |
680b30c7 | 9798 | case DW_TAG_interface_type: |
c906108c SS |
9799 | case DW_TAG_structure_type: |
9800 | case DW_TAG_union_type: | |
134d01f1 | 9801 | process_structure_scope (die, cu); |
c906108c SS |
9802 | break; |
9803 | case DW_TAG_enumeration_type: | |
134d01f1 | 9804 | process_enumeration_scope (die, cu); |
c906108c | 9805 | break; |
134d01f1 | 9806 | |
f792889a DJ |
9807 | /* These dies have a type, but processing them does not create |
9808 | a symbol or recurse to process the children. Therefore we can | |
9809 | read them on-demand through read_type_die. */ | |
c906108c | 9810 | case DW_TAG_subroutine_type: |
72019c9c | 9811 | case DW_TAG_set_type: |
c906108c | 9812 | case DW_TAG_array_type: |
c906108c | 9813 | case DW_TAG_pointer_type: |
c906108c | 9814 | case DW_TAG_ptr_to_member_type: |
c906108c | 9815 | case DW_TAG_reference_type: |
4297a3f0 | 9816 | case DW_TAG_rvalue_reference_type: |
c906108c | 9817 | case DW_TAG_string_type: |
c906108c | 9818 | break; |
134d01f1 | 9819 | |
c906108c | 9820 | case DW_TAG_base_type: |
a02abb62 | 9821 | case DW_TAG_subrange_type: |
cb249c71 | 9822 | case DW_TAG_typedef: |
134d01f1 DJ |
9823 | /* Add a typedef symbol for the type definition, if it has a |
9824 | DW_AT_name. */ | |
f792889a | 9825 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9826 | break; |
c906108c | 9827 | case DW_TAG_common_block: |
e7c27a73 | 9828 | read_common_block (die, cu); |
c906108c SS |
9829 | break; |
9830 | case DW_TAG_common_inclusion: | |
9831 | break; | |
d9fa45fe | 9832 | case DW_TAG_namespace: |
9068261f | 9833 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9834 | read_namespace (die, cu); |
d9fa45fe | 9835 | break; |
5d7cb8df | 9836 | case DW_TAG_module: |
9068261f | 9837 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9838 | read_module (die, cu); |
9839 | break; | |
d9fa45fe | 9840 | case DW_TAG_imported_declaration: |
9068261f | 9841 | cu->processing_has_namespace_info = true; |
74921315 KS |
9842 | if (read_namespace_alias (die, cu)) |
9843 | break; | |
86a73007 TT |
9844 | /* The declaration is not a global namespace alias. */ |
9845 | /* Fall through. */ | |
d9fa45fe | 9846 | case DW_TAG_imported_module: |
9068261f | 9847 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9848 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9849 | || cu->language != language_fortran)) | |
b98664d3 | 9850 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9851 | dwarf_tag_name (die->tag)); |
9852 | read_import_statement (die, cu); | |
d9fa45fe | 9853 | break; |
95554aad TT |
9854 | |
9855 | case DW_TAG_imported_unit: | |
9856 | process_imported_unit_die (die, cu); | |
9857 | break; | |
9858 | ||
71a3c369 TT |
9859 | case DW_TAG_variable: |
9860 | read_variable (die, cu); | |
9861 | break; | |
9862 | ||
c906108c | 9863 | default: |
e7c27a73 | 9864 | new_symbol (die, NULL, cu); |
c906108c SS |
9865 | break; |
9866 | } | |
9867 | } | |
ca69b9e6 DE |
9868 | \f |
9869 | /* DWARF name computation. */ | |
c906108c | 9870 | |
94af9270 KS |
9871 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9872 | needs to have the name of the scope prepended to the name listed in the | |
9873 | die. */ | |
9874 | ||
9875 | static int | |
9876 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9877 | { | |
1c809c68 TT |
9878 | struct attribute *attr; |
9879 | ||
94af9270 KS |
9880 | switch (die->tag) |
9881 | { | |
9882 | case DW_TAG_namespace: | |
9883 | case DW_TAG_typedef: | |
9884 | case DW_TAG_class_type: | |
9885 | case DW_TAG_interface_type: | |
9886 | case DW_TAG_structure_type: | |
9887 | case DW_TAG_union_type: | |
9888 | case DW_TAG_enumeration_type: | |
9889 | case DW_TAG_enumerator: | |
9890 | case DW_TAG_subprogram: | |
08a76f8a | 9891 | case DW_TAG_inlined_subroutine: |
94af9270 | 9892 | case DW_TAG_member: |
74921315 | 9893 | case DW_TAG_imported_declaration: |
94af9270 KS |
9894 | return 1; |
9895 | ||
9896 | case DW_TAG_variable: | |
c2b0a229 | 9897 | case DW_TAG_constant: |
94af9270 KS |
9898 | /* We only need to prefix "globally" visible variables. These include |
9899 | any variable marked with DW_AT_external or any variable that | |
9900 | lives in a namespace. [Variables in anonymous namespaces | |
9901 | require prefixing, but they are not DW_AT_external.] */ | |
9902 | ||
9903 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9904 | { | |
9905 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9906 | |
94af9270 KS |
9907 | return die_needs_namespace (die_specification (die, &spec_cu), |
9908 | spec_cu); | |
9909 | } | |
9910 | ||
1c809c68 | 9911 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9912 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9913 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9914 | return 0; |
9915 | /* A variable in a lexical block of some kind does not need a | |
9916 | namespace, even though in C++ such variables may be external | |
9917 | and have a mangled name. */ | |
9918 | if (die->parent->tag == DW_TAG_lexical_block | |
9919 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9920 | || die->parent->tag == DW_TAG_catch_block |
9921 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9922 | return 0; |
9923 | return 1; | |
94af9270 KS |
9924 | |
9925 | default: | |
9926 | return 0; | |
9927 | } | |
9928 | } | |
9929 | ||
73b9be8b KS |
9930 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
9931 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9932 | defined for the given DIE. */ | |
9933 | ||
9934 | static struct attribute * | |
9935 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
9936 | { | |
9937 | struct attribute *attr; | |
9938 | ||
9939 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
9940 | if (attr == NULL) | |
9941 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9942 | ||
9943 | return attr; | |
9944 | } | |
9945 | ||
9946 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
9947 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9948 | defined for the given DIE. */ | |
9949 | ||
9950 | static const char * | |
9951 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
9952 | { | |
9953 | const char *linkage_name; | |
9954 | ||
9955 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
9956 | if (linkage_name == NULL) | |
9957 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9958 | ||
9959 | return linkage_name; | |
9960 | } | |
9961 | ||
94af9270 | 9962 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 9963 | compute the physname for the object, which include a method's: |
9c37b5ae | 9964 | - formal parameters (C++), |
a766d390 | 9965 | - receiver type (Go), |
a766d390 DE |
9966 | |
9967 | The term "physname" is a bit confusing. | |
9968 | For C++, for example, it is the demangled name. | |
9969 | For Go, for example, it's the mangled name. | |
94af9270 | 9970 | |
af6b7be1 JB |
9971 | For Ada, return the DIE's linkage name rather than the fully qualified |
9972 | name. PHYSNAME is ignored.. | |
9973 | ||
94af9270 KS |
9974 | The result is allocated on the objfile_obstack and canonicalized. */ |
9975 | ||
9976 | static const char * | |
15d034d0 TT |
9977 | dwarf2_compute_name (const char *name, |
9978 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
9979 | int physname) |
9980 | { | |
518817b3 | 9981 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 9982 | |
94af9270 KS |
9983 | if (name == NULL) |
9984 | name = dwarf2_name (die, cu); | |
9985 | ||
2ee7123e DE |
9986 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
9987 | but otherwise compute it by typename_concat inside GDB. | |
9988 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 9989 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 9990 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
9991 | will set the demangled name to the result of dwarf2_full_name, and it is |
9992 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
9993 | if (cu->language == language_ada |
9994 | || (cu->language == language_fortran && physname)) | |
9995 | { | |
9996 | /* For Ada unit, we prefer the linkage name over the name, as | |
9997 | the former contains the exported name, which the user expects | |
9998 | to be able to reference. Ideally, we want the user to be able | |
9999 | to reference this entity using either natural or linkage name, | |
10000 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10001 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10002 | |
2ee7123e DE |
10003 | if (linkage_name != NULL) |
10004 | return linkage_name; | |
f55ee35c JK |
10005 | } |
10006 | ||
94af9270 KS |
10007 | /* These are the only languages we know how to qualify names in. */ |
10008 | if (name != NULL | |
9c37b5ae | 10009 | && (cu->language == language_cplus |
c44af4eb TT |
10010 | || cu->language == language_fortran || cu->language == language_d |
10011 | || cu->language == language_rust)) | |
94af9270 KS |
10012 | { |
10013 | if (die_needs_namespace (die, cu)) | |
10014 | { | |
0d5cff50 | 10015 | const char *prefix; |
34a68019 | 10016 | const char *canonical_name = NULL; |
94af9270 | 10017 | |
d7e74731 PA |
10018 | string_file buf; |
10019 | ||
94af9270 | 10020 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10021 | if (*prefix != '\0') |
10022 | { | |
43816ebc TT |
10023 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10024 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10025 | |
43816ebc | 10026 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10027 | } |
10028 | else | |
d7e74731 | 10029 | buf.puts (name); |
94af9270 | 10030 | |
98bfdba5 PA |
10031 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10032 | as children with DW_TAG_template_type_param or | |
10033 | DW_TAG_value_type_param. If the latter, add them to the name | |
10034 | here. If the name already has template parameters, then | |
10035 | skip this step; some versions of GCC emit both, and | |
10036 | it is more efficient to use the pre-computed name. | |
10037 | ||
10038 | Something to keep in mind about this process: it is very | |
10039 | unlikely, or in some cases downright impossible, to produce | |
10040 | something that will match the mangled name of a function. | |
10041 | If the definition of the function has the same debug info, | |
10042 | we should be able to match up with it anyway. But fallbacks | |
10043 | using the minimal symbol, for instance to find a method | |
10044 | implemented in a stripped copy of libstdc++, will not work. | |
10045 | If we do not have debug info for the definition, we will have to | |
10046 | match them up some other way. | |
10047 | ||
10048 | When we do name matching there is a related problem with function | |
10049 | templates; two instantiated function templates are allowed to | |
10050 | differ only by their return types, which we do not add here. */ | |
10051 | ||
10052 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10053 | { | |
10054 | struct attribute *attr; | |
10055 | struct die_info *child; | |
10056 | int first = 1; | |
10057 | ||
10058 | die->building_fullname = 1; | |
10059 | ||
10060 | for (child = die->child; child != NULL; child = child->sibling) | |
10061 | { | |
10062 | struct type *type; | |
12df843f | 10063 | LONGEST value; |
d521ce57 | 10064 | const gdb_byte *bytes; |
98bfdba5 PA |
10065 | struct dwarf2_locexpr_baton *baton; |
10066 | struct value *v; | |
10067 | ||
10068 | if (child->tag != DW_TAG_template_type_param | |
10069 | && child->tag != DW_TAG_template_value_param) | |
10070 | continue; | |
10071 | ||
10072 | if (first) | |
10073 | { | |
d7e74731 | 10074 | buf.puts ("<"); |
98bfdba5 PA |
10075 | first = 0; |
10076 | } | |
10077 | else | |
d7e74731 | 10078 | buf.puts (", "); |
98bfdba5 PA |
10079 | |
10080 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10081 | if (attr == NULL) | |
10082 | { | |
b98664d3 | 10083 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10084 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10085 | continue; |
10086 | } | |
10087 | type = die_type (child, cu); | |
10088 | ||
10089 | if (child->tag == DW_TAG_template_type_param) | |
10090 | { | |
c1ec8cea TT |
10091 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10092 | &type_print_raw_options); | |
98bfdba5 PA |
10093 | continue; |
10094 | } | |
10095 | ||
10096 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10097 | if (attr == NULL) | |
10098 | { | |
b98664d3 | 10099 | complaint (_("template parameter missing " |
3e43a32a | 10100 | "DW_AT_const_value")); |
d7e74731 | 10101 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10102 | continue; |
10103 | } | |
10104 | ||
10105 | dwarf2_const_value_attr (attr, type, name, | |
10106 | &cu->comp_unit_obstack, cu, | |
10107 | &value, &bytes, &baton); | |
10108 | ||
10109 | if (TYPE_NOSIGN (type)) | |
10110 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10111 | changed, this can use value_print instead. */ | |
d7e74731 | 10112 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10113 | else |
10114 | { | |
10115 | struct value_print_options opts; | |
10116 | ||
10117 | if (baton != NULL) | |
10118 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10119 | baton->data, | |
10120 | baton->size, | |
10121 | baton->per_cu); | |
10122 | else if (bytes != NULL) | |
10123 | { | |
10124 | v = allocate_value (type); | |
10125 | memcpy (value_contents_writeable (v), bytes, | |
10126 | TYPE_LENGTH (type)); | |
10127 | } | |
10128 | else | |
10129 | v = value_from_longest (type, value); | |
10130 | ||
3e43a32a MS |
10131 | /* Specify decimal so that we do not depend on |
10132 | the radix. */ | |
98bfdba5 PA |
10133 | get_formatted_print_options (&opts, 'd'); |
10134 | opts.raw = 1; | |
d7e74731 | 10135 | value_print (v, &buf, &opts); |
98bfdba5 | 10136 | release_value (v); |
98bfdba5 PA |
10137 | } |
10138 | } | |
10139 | ||
10140 | die->building_fullname = 0; | |
10141 | ||
10142 | if (!first) | |
10143 | { | |
10144 | /* Close the argument list, with a space if necessary | |
10145 | (nested templates). */ | |
d7e74731 PA |
10146 | if (!buf.empty () && buf.string ().back () == '>') |
10147 | buf.puts (" >"); | |
98bfdba5 | 10148 | else |
d7e74731 | 10149 | buf.puts (">"); |
98bfdba5 PA |
10150 | } |
10151 | } | |
10152 | ||
9c37b5ae | 10153 | /* For C++ methods, append formal parameter type |
94af9270 | 10154 | information, if PHYSNAME. */ |
6e70227d | 10155 | |
94af9270 | 10156 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10157 | && cu->language == language_cplus) |
94af9270 KS |
10158 | { |
10159 | struct type *type = read_type_die (die, cu); | |
10160 | ||
d7e74731 | 10161 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10162 | &type_print_raw_options); |
94af9270 | 10163 | |
9c37b5ae | 10164 | if (cu->language == language_cplus) |
94af9270 | 10165 | { |
60430eff DJ |
10166 | /* Assume that an artificial first parameter is |
10167 | "this", but do not crash if it is not. RealView | |
10168 | marks unnamed (and thus unused) parameters as | |
10169 | artificial; there is no way to differentiate | |
10170 | the two cases. */ | |
94af9270 KS |
10171 | if (TYPE_NFIELDS (type) > 0 |
10172 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10173 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10174 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10175 | 0)))) | |
d7e74731 | 10176 | buf.puts (" const"); |
94af9270 KS |
10177 | } |
10178 | } | |
10179 | ||
d7e74731 | 10180 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10181 | |
10182 | if (cu->language == language_cplus) | |
34a68019 | 10183 | canonical_name |
322a8516 | 10184 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10185 | objfile); |
34a68019 TT |
10186 | |
10187 | /* If we only computed INTERMEDIATE_NAME, or if | |
10188 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10189 | intern it. */ |
322a8516 | 10190 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10191 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10192 | else |
10193 | name = canonical_name; | |
94af9270 KS |
10194 | } |
10195 | } | |
10196 | ||
10197 | return name; | |
10198 | } | |
10199 | ||
0114d602 DJ |
10200 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10201 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10202 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10203 | not have a name. NAME may either be from a previous call to |
10204 | dwarf2_name or NULL. | |
10205 | ||
9c37b5ae | 10206 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10207 | |
10208 | static const char * | |
15d034d0 | 10209 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10210 | { |
94af9270 KS |
10211 | return dwarf2_compute_name (name, die, cu, 0); |
10212 | } | |
0114d602 | 10213 | |
94af9270 KS |
10214 | /* Construct a physname for the given DIE in CU. NAME may either be |
10215 | from a previous call to dwarf2_name or NULL. The result will be | |
10216 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10217 | name. | |
0114d602 | 10218 | |
9c37b5ae | 10219 | The output string will be canonicalized (if C++). */ |
0114d602 | 10220 | |
94af9270 | 10221 | static const char * |
15d034d0 | 10222 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10223 | { |
518817b3 | 10224 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10225 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10226 | int need_copy = 1; |
10227 | ||
10228 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10229 | on its own. */ | |
10230 | if (!die_needs_namespace (die, cu)) | |
10231 | return dwarf2_compute_name (name, die, cu, 1); | |
10232 | ||
73b9be8b | 10233 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10234 | |
e98c9e7c TT |
10235 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10236 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10237 | if (cu->language == language_rust && mangled != NULL | |
10238 | && strchr (mangled, '{') != NULL) | |
10239 | mangled = NULL; | |
10240 | ||
900e11f9 JK |
10241 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10242 | has computed. */ | |
791afaa2 | 10243 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10244 | if (mangled != NULL) |
900e11f9 | 10245 | { |
900e11f9 | 10246 | |
59cc4834 JB |
10247 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10248 | { | |
10249 | /* Do nothing (do not demangle the symbol name). */ | |
10250 | } | |
10251 | else if (cu->language == language_go) | |
a766d390 | 10252 | { |
5e2db402 TT |
10253 | /* This is a lie, but we already lie to the caller new_symbol. |
10254 | new_symbol assumes we return the mangled name. | |
a766d390 | 10255 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10256 | } |
10257 | else | |
10258 | { | |
0eb876f5 JB |
10259 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10260 | their return type. It is easier for GDB users to search | |
10261 | for such functions as `name(params)' than `long name(params)'. | |
10262 | In such case the minimal symbol names do not match the full | |
10263 | symbol names but for template functions there is never a need | |
10264 | to look up their definition from their declaration so | |
10265 | the only disadvantage remains the minimal symbol variant | |
10266 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10267 | demangled.reset (gdb_demangle (mangled, |
10268 | (DMGL_PARAMS | DMGL_ANSI | |
10269 | | DMGL_RET_DROP))); | |
a766d390 | 10270 | } |
900e11f9 | 10271 | if (demangled) |
791afaa2 | 10272 | canon = demangled.get (); |
900e11f9 JK |
10273 | else |
10274 | { | |
10275 | canon = mangled; | |
10276 | need_copy = 0; | |
10277 | } | |
10278 | } | |
10279 | ||
10280 | if (canon == NULL || check_physname) | |
10281 | { | |
10282 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10283 | ||
10284 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10285 | { | |
10286 | /* It may not mean a bug in GDB. The compiler could also | |
10287 | compute DW_AT_linkage_name incorrectly. But in such case | |
10288 | GDB would need to be bug-to-bug compatible. */ | |
10289 | ||
b98664d3 | 10290 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10291 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10292 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10293 | objfile_name (objfile)); |
900e11f9 JK |
10294 | |
10295 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10296 | is available here - over computed PHYSNAME. It is safer | |
10297 | against both buggy GDB and buggy compilers. */ | |
10298 | ||
10299 | retval = canon; | |
10300 | } | |
10301 | else | |
10302 | { | |
10303 | retval = physname; | |
10304 | need_copy = 0; | |
10305 | } | |
10306 | } | |
10307 | else | |
10308 | retval = canon; | |
10309 | ||
10310 | if (need_copy) | |
be1e3d3e | 10311 | retval = objfile->intern (retval); |
900e11f9 | 10312 | |
900e11f9 | 10313 | return retval; |
0114d602 DJ |
10314 | } |
10315 | ||
74921315 KS |
10316 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10317 | a new symbol for it. | |
10318 | ||
10319 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10320 | ||
10321 | static int | |
10322 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10323 | { | |
10324 | struct attribute *attr; | |
10325 | ||
10326 | /* If the die does not have a name, this is not a namespace | |
10327 | alias. */ | |
10328 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10329 | if (attr != NULL) | |
10330 | { | |
10331 | int num; | |
10332 | struct die_info *d = die; | |
10333 | struct dwarf2_cu *imported_cu = cu; | |
10334 | ||
10335 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10336 | keep inspecting DIEs until we hit the underlying import. */ | |
10337 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10338 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10339 | { | |
10340 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10341 | if (attr == NULL) | |
10342 | break; | |
10343 | ||
10344 | d = follow_die_ref (d, attr, &imported_cu); | |
10345 | if (d->tag != DW_TAG_imported_declaration) | |
10346 | break; | |
10347 | } | |
10348 | ||
10349 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10350 | { | |
b98664d3 | 10351 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10352 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10353 | return 0; |
10354 | } | |
10355 | ||
10356 | if (attr != NULL) | |
10357 | { | |
10358 | struct type *type; | |
0826b30a | 10359 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10360 | |
9c541725 | 10361 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10362 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10363 | { | |
10364 | /* This declaration is a global namespace alias. Add | |
10365 | a symbol for it whose type is the aliased namespace. */ | |
10366 | new_symbol (die, type, cu); | |
10367 | return 1; | |
10368 | } | |
10369 | } | |
10370 | } | |
10371 | ||
10372 | return 0; | |
10373 | } | |
10374 | ||
22cee43f | 10375 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10376 | current context for CU. |
22cee43f PMR |
10377 | |
10378 | For Ada, imported declarations can materialize renamings, which *may* be | |
10379 | global. However it is impossible (for now?) in DWARF to distinguish | |
10380 | "external" imported declarations and "static" ones. As all imported | |
10381 | declarations seem to be static in all other languages, make them all CU-wide | |
10382 | global only in Ada. */ | |
10383 | ||
10384 | static struct using_direct ** | |
804d2729 | 10385 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10386 | { |
c24bdb02 KS |
10387 | if (cu->language == language_ada |
10388 | && cu->get_builder ()->outermost_context_p ()) | |
10389 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10390 | else |
c24bdb02 | 10391 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10392 | } |
10393 | ||
27aa8d6a SW |
10394 | /* Read the import statement specified by the given die and record it. */ |
10395 | ||
10396 | static void | |
10397 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10398 | { | |
518817b3 | 10399 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10400 | struct attribute *import_attr; |
32019081 | 10401 | struct die_info *imported_die, *child_die; |
de4affc9 | 10402 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10403 | const char *imported_name; |
794684b6 | 10404 | const char *imported_name_prefix; |
13387711 SW |
10405 | const char *canonical_name; |
10406 | const char *import_alias; | |
10407 | const char *imported_declaration = NULL; | |
794684b6 | 10408 | const char *import_prefix; |
eb1e02fd | 10409 | std::vector<const char *> excludes; |
13387711 | 10410 | |
27aa8d6a SW |
10411 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10412 | if (import_attr == NULL) | |
10413 | { | |
b98664d3 | 10414 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10415 | dwarf_tag_name (die->tag)); |
10416 | return; | |
10417 | } | |
10418 | ||
de4affc9 CC |
10419 | imported_cu = cu; |
10420 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10421 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10422 | if (imported_name == NULL) |
10423 | { | |
10424 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10425 | ||
10426 | The import in the following code: | |
10427 | namespace A | |
10428 | { | |
10429 | typedef int B; | |
10430 | } | |
10431 | ||
10432 | int main () | |
10433 | { | |
10434 | using A::B; | |
10435 | B b; | |
10436 | return b; | |
10437 | } | |
10438 | ||
10439 | ... | |
10440 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10441 | <52> DW_AT_decl_file : 1 | |
10442 | <53> DW_AT_decl_line : 6 | |
10443 | <54> DW_AT_import : <0x75> | |
10444 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10445 | <59> DW_AT_name : B | |
10446 | <5b> DW_AT_decl_file : 1 | |
10447 | <5c> DW_AT_decl_line : 2 | |
10448 | <5d> DW_AT_type : <0x6e> | |
10449 | ... | |
10450 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10451 | <76> DW_AT_byte_size : 4 | |
10452 | <77> DW_AT_encoding : 5 (signed) | |
10453 | ||
10454 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10455 | This case will be ignored until the gcc bug is fixed. */ | |
10456 | return; | |
10457 | } | |
10458 | ||
82856980 SW |
10459 | /* Figure out the local name after import. */ |
10460 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10461 | |
794684b6 SW |
10462 | /* Figure out where the statement is being imported to. */ |
10463 | import_prefix = determine_prefix (die, cu); | |
10464 | ||
10465 | /* Figure out what the scope of the imported die is and prepend it | |
10466 | to the name of the imported die. */ | |
de4affc9 | 10467 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10468 | |
f55ee35c JK |
10469 | if (imported_die->tag != DW_TAG_namespace |
10470 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10471 | { |
13387711 SW |
10472 | imported_declaration = imported_name; |
10473 | canonical_name = imported_name_prefix; | |
794684b6 | 10474 | } |
13387711 | 10475 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10476 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10477 | imported_name_prefix, |
10478 | (cu->language == language_d ? "." : "::"), | |
10479 | imported_name, (char *) NULL); | |
13387711 SW |
10480 | else |
10481 | canonical_name = imported_name; | |
794684b6 | 10482 | |
32019081 JK |
10483 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10484 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10485 | child_die = child_die->sibling) |
32019081 JK |
10486 | { |
10487 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10488 | represented by an imported module entry with an import attribute | |
10489 | referring to the module and owned entries corresponding to those | |
10490 | entities that are renamed as part of being imported. */ | |
10491 | ||
10492 | if (child_die->tag != DW_TAG_imported_declaration) | |
10493 | { | |
b98664d3 | 10494 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10495 | "- DIE at %s [in module %s]"), |
10496 | sect_offset_str (child_die->sect_off), | |
10497 | objfile_name (objfile)); | |
32019081 JK |
10498 | continue; |
10499 | } | |
10500 | ||
10501 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10502 | if (import_attr == NULL) | |
10503 | { | |
b98664d3 | 10504 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10505 | dwarf_tag_name (child_die->tag)); |
10506 | continue; | |
10507 | } | |
10508 | ||
10509 | imported_cu = cu; | |
10510 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10511 | &imported_cu); | |
10512 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10513 | if (imported_name == NULL) | |
10514 | { | |
b98664d3 | 10515 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10516 | "imported name - DIE at %s [in module %s]"), |
10517 | sect_offset_str (child_die->sect_off), | |
10518 | objfile_name (objfile)); | |
32019081 JK |
10519 | continue; |
10520 | } | |
10521 | ||
eb1e02fd | 10522 | excludes.push_back (imported_name); |
32019081 JK |
10523 | |
10524 | process_die (child_die, cu); | |
10525 | } | |
10526 | ||
804d2729 | 10527 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10528 | import_prefix, |
10529 | canonical_name, | |
10530 | import_alias, | |
10531 | imported_declaration, | |
10532 | excludes, | |
10533 | 0, | |
10534 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10535 | } |
10536 | ||
5230b05a WT |
10537 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10538 | types, but gives them a size of zero. Starting with version 14, | |
10539 | ICC is compatible with GCC. */ | |
10540 | ||
9068261f | 10541 | static bool |
5230b05a WT |
10542 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10543 | { | |
10544 | if (!cu->checked_producer) | |
10545 | check_producer (cu); | |
10546 | ||
10547 | return cu->producer_is_icc_lt_14; | |
10548 | } | |
10549 | ||
eb77c9df AB |
10550 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10551 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10552 | which says that void functions should not have a DW_AT_type. */ | |
10553 | ||
10554 | static bool | |
10555 | producer_is_icc (struct dwarf2_cu *cu) | |
10556 | { | |
10557 | if (!cu->checked_producer) | |
10558 | check_producer (cu); | |
10559 | ||
10560 | return cu->producer_is_icc; | |
10561 | } | |
10562 | ||
1b80a9fa JK |
10563 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10564 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10565 | this, it was first present in GCC release 4.3.0. */ | |
10566 | ||
9068261f | 10567 | static bool |
1b80a9fa JK |
10568 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10569 | { | |
10570 | if (!cu->checked_producer) | |
10571 | check_producer (cu); | |
10572 | ||
10573 | return cu->producer_is_gcc_lt_4_3; | |
10574 | } | |
10575 | ||
d721ba37 PA |
10576 | static file_and_directory |
10577 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10578 | { |
d721ba37 PA |
10579 | file_and_directory res; |
10580 | ||
9291a0cd TT |
10581 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10582 | is not a source language identifier. */ | |
d721ba37 PA |
10583 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10584 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10585 | |
d721ba37 PA |
10586 | if (res.comp_dir == NULL |
10587 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10588 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10589 | { |
d721ba37 PA |
10590 | res.comp_dir_storage = ldirname (res.name); |
10591 | if (!res.comp_dir_storage.empty ()) | |
10592 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10593 | } |
d721ba37 | 10594 | if (res.comp_dir != NULL) |
9291a0cd TT |
10595 | { |
10596 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10597 | directory, get rid of it. */ | |
d721ba37 | 10598 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10599 | |
d721ba37 PA |
10600 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10601 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10602 | } |
10603 | ||
d721ba37 PA |
10604 | if (res.name == NULL) |
10605 | res.name = "<unknown>"; | |
10606 | ||
10607 | return res; | |
9291a0cd TT |
10608 | } |
10609 | ||
f4dc4d17 DE |
10610 | /* Handle DW_AT_stmt_list for a compilation unit. |
10611 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10612 | COMP_DIR is the compilation directory. LOWPC is passed to |
10613 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10614 | |
10615 | static void | |
10616 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10617 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10618 | { |
518817b3 SM |
10619 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10620 | = cu->per_cu->dwarf2_per_objfile; | |
2ab95328 | 10621 | struct attribute *attr; |
527f3840 JK |
10622 | struct line_header line_header_local; |
10623 | hashval_t line_header_local_hash; | |
527f3840 JK |
10624 | void **slot; |
10625 | int decode_mapping; | |
2ab95328 | 10626 | |
f4dc4d17 DE |
10627 | gdb_assert (! cu->per_cu->is_debug_types); |
10628 | ||
2ab95328 | 10629 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10630 | if (attr == NULL) |
10631 | return; | |
10632 | ||
9c541725 | 10633 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10634 | |
10635 | /* The line header hash table is only created if needed (it exists to | |
10636 | prevent redundant reading of the line table for partial_units). | |
10637 | If we're given a partial_unit, we'll need it. If we're given a | |
10638 | compile_unit, then use the line header hash table if it's already | |
10639 | created, but don't create one just yet. */ | |
10640 | ||
10641 | if (dwarf2_per_objfile->line_header_hash == NULL | |
10642 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 10643 | { |
527f3840 | 10644 | dwarf2_per_objfile->line_header_hash |
d15acc42 TT |
10645 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10646 | line_header_eq_voidp, | |
10647 | free_line_header_voidp, | |
10648 | xcalloc, xfree)); | |
527f3840 | 10649 | } |
2ab95328 | 10650 | |
9c541725 | 10651 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10652 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10653 | line_header_local_hash = line_header_hash (&line_header_local); | |
10654 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
10655 | { | |
d15acc42 | 10656 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10657 | &line_header_local, |
10658 | line_header_local_hash, NO_INSERT); | |
10659 | ||
10660 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10661 | is not present in *SLOT (since if there is something in *SLOT then | |
10662 | it will be for a partial_unit). */ | |
10663 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10664 | { |
527f3840 | 10665 | gdb_assert (*slot != NULL); |
9a3c8263 | 10666 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10667 | return; |
dee91e82 | 10668 | } |
2ab95328 | 10669 | } |
527f3840 JK |
10670 | |
10671 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10672 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10673 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10674 | if (lh == NULL) | |
527f3840 | 10675 | return; |
4c8aa72d PA |
10676 | |
10677 | cu->line_header = lh.release (); | |
10678 | cu->line_header_die_owner = die; | |
527f3840 JK |
10679 | |
10680 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
10681 | slot = NULL; | |
10682 | else | |
10683 | { | |
d15acc42 | 10684 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10685 | &line_header_local, |
10686 | line_header_local_hash, INSERT); | |
10687 | gdb_assert (slot != NULL); | |
10688 | } | |
10689 | if (slot != NULL && *slot == NULL) | |
10690 | { | |
10691 | /* This newly decoded line number information unit will be owned | |
10692 | by line_header_hash hash table. */ | |
10693 | *slot = cu->line_header; | |
4c8aa72d | 10694 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10695 | } |
10696 | else | |
10697 | { | |
10698 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10699 | may be already used by multiple CUs. Create only temporary decoded | |
10700 | line_header for this CU - it may happen at most once for each line | |
10701 | number information unit. And if we're not using line_header_hash | |
10702 | then this is what we want as well. */ | |
10703 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10704 | } |
10705 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10706 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10707 | decode_mapping); | |
fff8551c | 10708 | |
2ab95328 TT |
10709 | } |
10710 | ||
95554aad | 10711 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10712 | |
c906108c | 10713 | static void |
e7c27a73 | 10714 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10715 | { |
518817b3 SM |
10716 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10717 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 10718 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 10719 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 10720 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10721 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10722 | struct attribute *attr; | |
c906108c | 10723 | struct die_info *child_die; |
e142c38c | 10724 | CORE_ADDR baseaddr; |
6e70227d | 10725 | |
380618d6 | 10726 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10727 | baseaddr = objfile->text_section_offset (); |
c906108c | 10728 | |
fae299cd | 10729 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10730 | |
10731 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10732 | from finish_block. */ | |
2acceee2 | 10733 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10734 | lowpc = highpc; |
3e29f34a | 10735 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10736 | |
d721ba37 | 10737 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10738 | |
f4b8a18d KW |
10739 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10740 | standardised yet. As a workaround for the language detection we fall | |
10741 | back to the DW_AT_producer string. */ | |
10742 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10743 | cu->language = language_opencl; | |
10744 | ||
3019eac3 DE |
10745 | /* Similar hack for Go. */ |
10746 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10747 | set_cu_language (DW_LANG_Go, cu); | |
10748 | ||
c24bdb02 | 10749 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10750 | |
10751 | /* Decode line number information if present. We do this before | |
10752 | processing child DIEs, so that the line header table is available | |
10753 | for DW_AT_decl_file. */ | |
d721ba37 | 10754 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10755 | |
10756 | /* Process all dies in compilation unit. */ | |
10757 | if (die->child != NULL) | |
10758 | { | |
10759 | child_die = die->child; | |
10760 | while (child_die && child_die->tag) | |
10761 | { | |
10762 | process_die (child_die, cu); | |
436c571c | 10763 | child_die = child_die->sibling; |
3019eac3 DE |
10764 | } |
10765 | } | |
10766 | ||
10767 | /* Decode macro information, if present. Dwarf 2 macro information | |
10768 | refers to information in the line number info statement program | |
10769 | header, so we can only read it if we've read the header | |
10770 | successfully. */ | |
0af92d60 JK |
10771 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10772 | if (attr == NULL) | |
10773 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
10774 | if (attr && cu->line_header) |
10775 | { | |
10776 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10777 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10778 | |
43f3e411 | 10779 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
10780 | } |
10781 | else | |
10782 | { | |
10783 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
10784 | if (attr && cu->line_header) | |
10785 | { | |
10786 | unsigned int macro_offset = DW_UNSND (attr); | |
10787 | ||
43f3e411 | 10788 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10789 | } |
10790 | } | |
3019eac3 DE |
10791 | } |
10792 | ||
c24bdb02 KS |
10793 | void |
10794 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10795 | { |
f4dc4d17 DE |
10796 | struct type_unit_group *tu_group; |
10797 | int first_time; | |
3019eac3 | 10798 | struct attribute *attr; |
9c541725 | 10799 | unsigned int i; |
0186c6a7 | 10800 | struct signatured_type *sig_type; |
3019eac3 | 10801 | |
f4dc4d17 | 10802 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10803 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10804 | |
c24bdb02 | 10805 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10806 | |
f4dc4d17 | 10807 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10808 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10809 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10810 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10811 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10812 | |
10813 | /* If we've already processed this stmt_list there's no real need to | |
10814 | do it again, we could fake it and just recreate the part we need | |
10815 | (file name,index -> symtab mapping). If data shows this optimization | |
10816 | is useful we can do it then. */ | |
43f3e411 | 10817 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
10818 | |
10819 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10820 | debug info. */ | |
fff8551c | 10821 | line_header_up lh; |
f4dc4d17 | 10822 | if (attr != NULL) |
3019eac3 | 10823 | { |
9c541725 | 10824 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 10825 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10826 | } |
10827 | if (lh == NULL) | |
10828 | { | |
10829 | if (first_time) | |
c24bdb02 | 10830 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10831 | else |
10832 | { | |
10833 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 10834 | gdb_assert (m_builder == nullptr); |
804d2729 | 10835 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10836 | m_builder.reset (new struct buildsym_compunit |
10837 | (COMPUNIT_OBJFILE (cust), "", | |
10838 | COMPUNIT_DIRNAME (cust), | |
10839 | compunit_language (cust), | |
10840 | 0, cust)); | |
f4dc4d17 | 10841 | } |
f4dc4d17 | 10842 | return; |
3019eac3 DE |
10843 | } |
10844 | ||
c24bdb02 KS |
10845 | line_header = lh.release (); |
10846 | line_header_die_owner = die; | |
3019eac3 | 10847 | |
f4dc4d17 DE |
10848 | if (first_time) |
10849 | { | |
c24bdb02 | 10850 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10851 | |
1fd60fc0 DE |
10852 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10853 | still initializing it, and our caller (a few levels up) | |
10854 | process_full_type_unit still needs to know if this is the first | |
10855 | time. */ | |
10856 | ||
4ac93832 TT |
10857 | tu_group->symtabs |
10858 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, | |
10859 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10860 | |
7ba99d21 AT |
10861 | auto &file_names = line_header->file_names (); |
10862 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10863 | { |
7ba99d21 | 10864 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10865 | dwarf2_start_subfile (this, fe.name, |
10866 | fe.include_dir (line_header)); | |
10867 | buildsym_compunit *b = get_builder (); | |
10868 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10869 | { |
4c8aa72d PA |
10870 | /* NOTE: start_subfile will recognize when it's been |
10871 | passed a file it has already seen. So we can't | |
10872 | assume there's a simple mapping from | |
10873 | cu->line_header->file_names to subfiles, plus | |
10874 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10875 | b->get_current_subfile ()->symtab |
10876 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10877 | } |
10878 | ||
c24bdb02 | 10879 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 10880 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10881 | } |
10882 | } | |
10883 | else | |
3019eac3 | 10884 | { |
c24bdb02 | 10885 | gdb_assert (m_builder == nullptr); |
804d2729 | 10886 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10887 | m_builder.reset (new struct buildsym_compunit |
10888 | (COMPUNIT_OBJFILE (cust), "", | |
10889 | COMPUNIT_DIRNAME (cust), | |
10890 | compunit_language (cust), | |
10891 | 0, cust)); | |
f4dc4d17 | 10892 | |
7ba99d21 AT |
10893 | auto &file_names = line_header->file_names (); |
10894 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10895 | { |
7ba99d21 | 10896 | file_entry &fe = file_names[i]; |
4c8aa72d | 10897 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 10898 | } |
3019eac3 DE |
10899 | } |
10900 | ||
f4dc4d17 DE |
10901 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10902 | so they don't have a "real" (so to speak) symtab anyway. | |
10903 | There is later code that will assign the main symtab to all symbols | |
10904 | that don't have one. We need to handle the case of a symbol with a | |
10905 | missing symtab (DW_AT_decl_file) anyway. */ | |
10906 | } | |
3019eac3 | 10907 | |
f4dc4d17 DE |
10908 | /* Process DW_TAG_type_unit. |
10909 | For TUs we want to skip the first top level sibling if it's not the | |
10910 | actual type being defined by this TU. In this case the first top | |
10911 | level sibling is there to provide context only. */ | |
3019eac3 | 10912 | |
f4dc4d17 DE |
10913 | static void |
10914 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10915 | { | |
10916 | struct die_info *child_die; | |
3019eac3 | 10917 | |
f4dc4d17 DE |
10918 | prepare_one_comp_unit (cu, die, language_minimal); |
10919 | ||
10920 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10921 | We do this before processing child DIEs, so that the line header table | |
10922 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10923 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
10924 | |
10925 | if (die->child != NULL) | |
10926 | { | |
10927 | child_die = die->child; | |
10928 | while (child_die && child_die->tag) | |
10929 | { | |
10930 | process_die (child_die, cu); | |
436c571c | 10931 | child_die = child_die->sibling; |
f4dc4d17 DE |
10932 | } |
10933 | } | |
3019eac3 DE |
10934 | } |
10935 | \f | |
80626a55 DE |
10936 | /* DWO/DWP files. |
10937 | ||
10938 | http://gcc.gnu.org/wiki/DebugFission | |
10939 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
10940 | ||
10941 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
10942 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
10943 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
10944 | |
10945 | static hashval_t | |
10946 | hash_dwo_file (const void *item) | |
10947 | { | |
9a3c8263 | 10948 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 10949 | hashval_t hash; |
3019eac3 | 10950 | |
a2ce51a0 DE |
10951 | hash = htab_hash_string (dwo_file->dwo_name); |
10952 | if (dwo_file->comp_dir != NULL) | |
10953 | hash += htab_hash_string (dwo_file->comp_dir); | |
10954 | return hash; | |
3019eac3 DE |
10955 | } |
10956 | ||
10957 | static int | |
10958 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
10959 | { | |
9a3c8263 SM |
10960 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
10961 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 10962 | |
a2ce51a0 DE |
10963 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
10964 | return 0; | |
10965 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
10966 | return lhs->comp_dir == rhs->comp_dir; | |
10967 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
10968 | } |
10969 | ||
10970 | /* Allocate a hash table for DWO files. */ | |
10971 | ||
51ac9db5 | 10972 | static htab_up |
298e9637 | 10973 | allocate_dwo_file_hash_table () |
3019eac3 | 10974 | { |
51ac9db5 SM |
10975 | auto delete_dwo_file = [] (void *item) |
10976 | { | |
10977 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
10978 | ||
10979 | delete dwo_file; | |
10980 | }; | |
10981 | ||
bc68fb19 TT |
10982 | return htab_up (htab_create_alloc (41, |
10983 | hash_dwo_file, | |
10984 | eq_dwo_file, | |
10985 | delete_dwo_file, | |
10986 | xcalloc, xfree)); | |
3019eac3 DE |
10987 | } |
10988 | ||
80626a55 DE |
10989 | /* Lookup DWO file DWO_NAME. */ |
10990 | ||
10991 | static void ** | |
ed2dc618 SM |
10992 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
10993 | const char *dwo_name, | |
10994 | const char *comp_dir) | |
80626a55 DE |
10995 | { |
10996 | struct dwo_file find_entry; | |
10997 | void **slot; | |
10998 | ||
10999 | if (dwarf2_per_objfile->dwo_files == NULL) | |
298e9637 | 11000 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); |
80626a55 | 11001 | |
0ac5b59e DE |
11002 | find_entry.dwo_name = dwo_name; |
11003 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11004 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11005 | INSERT); | |
80626a55 DE |
11006 | |
11007 | return slot; | |
11008 | } | |
11009 | ||
3019eac3 DE |
11010 | static hashval_t |
11011 | hash_dwo_unit (const void *item) | |
11012 | { | |
9a3c8263 | 11013 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11014 | |
11015 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11016 | return dwo_unit->signature; | |
11017 | } | |
11018 | ||
11019 | static int | |
11020 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11021 | { | |
9a3c8263 SM |
11022 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11023 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11024 | |
11025 | /* The signature is assumed to be unique within the DWO file. | |
11026 | So while object file CU dwo_id's always have the value zero, | |
11027 | that's OK, assuming each object file DWO file has only one CU, | |
11028 | and that's the rule for now. */ | |
11029 | return lhs->signature == rhs->signature; | |
11030 | } | |
11031 | ||
11032 | /* Allocate a hash table for DWO CUs,TUs. | |
11033 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11034 | ||
b0b6a987 | 11035 | static htab_up |
298e9637 | 11036 | allocate_dwo_unit_table () |
3019eac3 DE |
11037 | { |
11038 | /* Start out with a pretty small number. | |
11039 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11040 | return htab_up (htab_create_alloc (3, |
11041 | hash_dwo_unit, | |
11042 | eq_dwo_unit, | |
11043 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11044 | } |
11045 | ||
19c3d4c9 | 11046 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11047 | |
11048 | static void | |
19c3d4c9 DE |
11049 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11050 | const gdb_byte *info_ptr, | |
11051 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11052 | struct dwo_file *dwo_file, |
11053 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11054 | { |
11055 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11056 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11057 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11058 | |
a084a2a6 AT |
11059 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11060 | if (!signature.has_value ()) | |
3019eac3 | 11061 | { |
b98664d3 | 11062 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11063 | " its dwo_id [in module %s]"), |
9d8780f0 | 11064 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11065 | return; |
11066 | } | |
11067 | ||
3019eac3 | 11068 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11069 | dwo_unit->signature = *signature; |
8a0459fd | 11070 | dwo_unit->section = section; |
9c541725 | 11071 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11072 | dwo_unit->length = cu->per_cu->length; |
11073 | ||
b4f54984 | 11074 | if (dwarf_read_debug) |
9d8780f0 SM |
11075 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11076 | sect_offset_str (sect_off), | |
9c541725 | 11077 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11078 | } |
11079 | ||
33c5cd75 | 11080 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11081 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11082 | |
33c5cd75 | 11083 | static void |
ed2dc618 | 11084 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11085 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11086 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11087 | { |
11088 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11089 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11090 | |
96b79293 | 11091 | section.read (objfile); |
33c5cd75 | 11092 | info_ptr = section.buffer; |
3019eac3 DE |
11093 | |
11094 | if (info_ptr == NULL) | |
33c5cd75 | 11095 | return; |
3019eac3 | 11096 | |
b4f54984 | 11097 | if (dwarf_read_debug) |
19c3d4c9 DE |
11098 | { |
11099 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11100 | section.get_name (), |
11101 | section.get_file_name ()); | |
19c3d4c9 | 11102 | } |
3019eac3 | 11103 | |
33c5cd75 | 11104 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11105 | while (info_ptr < end_ptr) |
11106 | { | |
11107 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11108 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11109 | struct dwo_unit *dwo_unit; |
11110 | void **slot; | |
11111 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11112 | |
11113 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11114 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11115 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11116 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11117 | per_cu.section = §ion; | |
11118 | ||
c0ab21c2 TT |
11119 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11120 | if (!reader.dummy_p) | |
11121 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11122 | &dwo_file, &read_unit); |
33c5cd75 DB |
11123 | info_ptr += per_cu.length; |
11124 | ||
11125 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11126 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11127 | continue; |
3019eac3 | 11128 | |
33c5cd75 | 11129 | if (cus_htab == NULL) |
298e9637 | 11130 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11131 | |
33c5cd75 | 11132 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11133 | *dwo_unit = read_unit; |
b0b6a987 | 11134 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11135 | gdb_assert (slot != NULL); |
11136 | if (*slot != NULL) | |
19c3d4c9 | 11137 | { |
33c5cd75 DB |
11138 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11139 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11140 | |
b98664d3 | 11141 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11142 | " the entry at offset %s, signature %s"), |
11143 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11144 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11145 | } |
33c5cd75 | 11146 | *slot = (void *)dwo_unit; |
3019eac3 | 11147 | } |
3019eac3 DE |
11148 | } |
11149 | ||
80626a55 DE |
11150 | /* DWP file .debug_{cu,tu}_index section format: |
11151 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11152 | ||
d2415c6c DE |
11153 | DWP Version 1: |
11154 | ||
80626a55 DE |
11155 | Both index sections have the same format, and serve to map a 64-bit |
11156 | signature to a set of section numbers. Each section begins with a header, | |
11157 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11158 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11159 | aligned at 8-byte boundaries in the file. | |
11160 | ||
d2415c6c DE |
11161 | The index section header consists of: |
11162 | ||
11163 | V, 32 bit version number | |
11164 | -, 32 bits unused | |
11165 | N, 32 bit number of compilation units or type units in the index | |
11166 | M, 32 bit number of slots in the hash table | |
80626a55 | 11167 | |
d2415c6c | 11168 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11169 | |
d2415c6c DE |
11170 | The hash table begins at offset 16 in the section, and consists of an array |
11171 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11172 | order of the application binary). Unused slots in the hash table are 0. | |
11173 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11174 | |
d2415c6c DE |
11175 | The parallel table begins immediately after the hash table |
11176 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11177 | array of 32-bit indexes (using the byte order of the application binary), | |
11178 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11179 | table contains a 32-bit index into the pool of section numbers. For unused | |
11180 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11181 | |
73869dc2 DE |
11182 | The pool of section numbers begins immediately following the hash table |
11183 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11184 | section numbers consists of an array of 32-bit words (using the byte order | |
11185 | of the application binary). Each item in the array is indexed starting | |
11186 | from 0. The hash table entry provides the index of the first section | |
11187 | number in the set. Additional section numbers in the set follow, and the | |
11188 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11189 | ||
11190 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11191 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11192 | be the second entry. Other members of the set may follow in any order. | |
11193 | ||
11194 | --- | |
11195 | ||
11196 | DWP Version 2: | |
11197 | ||
11198 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11199 | and the entries in the index tables are now offsets into these sections. | |
11200 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11201 | section. | |
11202 | ||
11203 | Index Section Contents: | |
11204 | Header | |
11205 | Hash Table of Signatures dwp_hash_table.hash_table | |
11206 | Parallel Table of Indices dwp_hash_table.unit_table | |
11207 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11208 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11209 | ||
11210 | The index section header consists of: | |
11211 | ||
11212 | V, 32 bit version number | |
11213 | L, 32 bit number of columns in the table of section offsets | |
11214 | N, 32 bit number of compilation units or type units in the index | |
11215 | M, 32 bit number of slots in the hash table | |
11216 | ||
11217 | Numbers are recorded using the byte order of the application binary. | |
11218 | ||
11219 | The hash table has the same format as version 1. | |
11220 | The parallel table of indices has the same format as version 1, | |
11221 | except that the entries are origin-1 indices into the table of sections | |
11222 | offsets and the table of section sizes. | |
11223 | ||
11224 | The table of offsets begins immediately following the parallel table | |
11225 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11226 | a two-dimensional array of 32-bit words (using the byte order of the | |
11227 | application binary), with L columns and N+1 rows, in row-major order. | |
11228 | Each row in the array is indexed starting from 0. The first row provides | |
11229 | a key to the remaining rows: each column in this row provides an identifier | |
11230 | for a debug section, and the offsets in the same column of subsequent rows | |
11231 | refer to that section. The section identifiers are: | |
11232 | ||
11233 | DW_SECT_INFO 1 .debug_info.dwo | |
11234 | DW_SECT_TYPES 2 .debug_types.dwo | |
11235 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11236 | DW_SECT_LINE 4 .debug_line.dwo | |
11237 | DW_SECT_LOC 5 .debug_loc.dwo | |
11238 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11239 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11240 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11241 | ||
11242 | The offsets provided by the CU and TU index sections are the base offsets | |
11243 | for the contributions made by each CU or TU to the corresponding section | |
11244 | in the package file. Each CU and TU header contains an abbrev_offset | |
11245 | field, used to find the abbreviations table for that CU or TU within the | |
11246 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11247 | be interpreted as relative to the base offset given in the index section. | |
11248 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11249 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11250 | and offsets into other debug sections obtained from DWARF attributes should | |
11251 | also be interpreted as relative to the corresponding base offset. | |
11252 | ||
11253 | The table of sizes begins immediately following the table of offsets. | |
11254 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11255 | with L columns and N rows, in row-major order. Each row in the array is | |
11256 | indexed starting from 1 (row 0 is shared by the two tables). | |
11257 | ||
11258 | --- | |
11259 | ||
11260 | Hash table lookup is handled the same in version 1 and 2: | |
11261 | ||
11262 | We assume that N and M will not exceed 2^32 - 1. | |
11263 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11264 | ||
d2415c6c DE |
11265 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11266 | in the hash table is located as follows: | |
80626a55 | 11267 | |
d2415c6c DE |
11268 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11269 | the low-order k bits all set to 1. | |
80626a55 | 11270 | |
d2415c6c | 11271 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11272 | |
d2415c6c DE |
11273 | 3) If the hash table entry at index H matches the signature, use that |
11274 | entry. If the hash table entry at index H is unused (all zeroes), | |
11275 | terminate the search: the signature is not present in the table. | |
80626a55 | 11276 | |
d2415c6c | 11277 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11278 | |
d2415c6c | 11279 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11280 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11281 | |
11282 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11283 | .debug_{info,types}.dwo in DWP_FILE. | |
11284 | Returns NULL if there isn't one. | |
11285 | Note: This function processes DWP files only, not DWO files. */ | |
11286 | ||
11287 | static struct dwp_hash_table * | |
ed2dc618 SM |
11288 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11289 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11290 | { |
11291 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11292 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11293 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11294 | struct dwarf2_section_info *index; |
73869dc2 | 11295 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11296 | struct dwp_hash_table *htab; |
11297 | ||
11298 | if (is_debug_types) | |
11299 | index = &dwp_file->sections.tu_index; | |
11300 | else | |
11301 | index = &dwp_file->sections.cu_index; | |
11302 | ||
96b79293 | 11303 | if (index->empty ()) |
80626a55 | 11304 | return NULL; |
96b79293 | 11305 | index->read (objfile); |
80626a55 DE |
11306 | |
11307 | index_ptr = index->buffer; | |
11308 | index_end = index_ptr + index->size; | |
11309 | ||
11310 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11311 | index_ptr += 4; |
11312 | if (version == 2) | |
11313 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11314 | else | |
11315 | nr_columns = 0; | |
11316 | index_ptr += 4; | |
80626a55 DE |
11317 | nr_units = read_4_bytes (dbfd, index_ptr); |
11318 | index_ptr += 4; | |
11319 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11320 | index_ptr += 4; | |
11321 | ||
73869dc2 | 11322 | if (version != 1 && version != 2) |
80626a55 | 11323 | { |
21aa081e | 11324 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11325 | " [in module %s]"), |
21aa081e | 11326 | pulongest (version), dwp_file->name); |
80626a55 DE |
11327 | } |
11328 | if (nr_slots != (nr_slots & -nr_slots)) | |
11329 | { | |
21aa081e | 11330 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11331 | " is not power of 2 [in module %s]"), |
21aa081e | 11332 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11333 | } |
11334 | ||
11335 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11336 | htab->version = version; |
11337 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11338 | htab->nr_units = nr_units; |
11339 | htab->nr_slots = nr_slots; | |
11340 | htab->hash_table = index_ptr; | |
11341 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11342 | |
11343 | /* Exit early if the table is empty. */ | |
11344 | if (nr_slots == 0 || nr_units == 0 | |
11345 | || (version == 2 && nr_columns == 0)) | |
11346 | { | |
11347 | /* All must be zero. */ | |
11348 | if (nr_slots != 0 || nr_units != 0 | |
11349 | || (version == 2 && nr_columns != 0)) | |
11350 | { | |
b98664d3 | 11351 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11352 | " all zero [in modules %s]"), |
11353 | dwp_file->name); | |
11354 | } | |
11355 | return htab; | |
11356 | } | |
11357 | ||
11358 | if (version == 1) | |
11359 | { | |
11360 | htab->section_pool.v1.indices = | |
11361 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11362 | /* It's harder to decide whether the section is too small in v1. | |
11363 | V1 is deprecated anyway so we punt. */ | |
11364 | } | |
11365 | else | |
11366 | { | |
11367 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11368 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11369 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11370 | /* Reverse map for error checking. */ |
11371 | int ids_seen[DW_SECT_MAX + 1]; | |
11372 | int i; | |
11373 | ||
11374 | if (nr_columns < 2) | |
11375 | { | |
11376 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11377 | " in section table [in module %s]"), | |
11378 | dwp_file->name); | |
11379 | } | |
11380 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11381 | { | |
11382 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11383 | " in section table [in module %s]"), | |
11384 | dwp_file->name); | |
11385 | } | |
04fd5eed GB |
11386 | memset (ids, 255, sizeof_ids); |
11387 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11388 | for (i = 0; i < nr_columns; ++i) |
11389 | { | |
11390 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11391 | ||
11392 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11393 | { | |
11394 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11395 | " in section table [in module %s]"), | |
11396 | id, dwp_file->name); | |
11397 | } | |
11398 | if (ids_seen[id] != -1) | |
11399 | { | |
11400 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11401 | " id %d in section table [in module %s]"), | |
11402 | id, dwp_file->name); | |
11403 | } | |
11404 | ids_seen[id] = i; | |
11405 | ids[i] = id; | |
11406 | } | |
11407 | /* Must have exactly one info or types section. */ | |
11408 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11409 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11410 | != 1) | |
11411 | { | |
11412 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11413 | " DWO info/types section [in module %s]"), | |
11414 | dwp_file->name); | |
11415 | } | |
11416 | /* Must have an abbrev section. */ | |
11417 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11418 | { | |
11419 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11420 | " section [in module %s]"), | |
11421 | dwp_file->name); | |
11422 | } | |
11423 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11424 | htab->section_pool.v2.sizes = | |
11425 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11426 | * nr_units * nr_columns); | |
11427 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11428 | * nr_units * nr_columns)) | |
11429 | > index_end) | |
11430 | { | |
11431 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11432 | " [in module %s]"), | |
11433 | dwp_file->name); | |
11434 | } | |
11435 | } | |
80626a55 DE |
11436 | |
11437 | return htab; | |
11438 | } | |
11439 | ||
11440 | /* Update SECTIONS with the data from SECTP. | |
11441 | ||
11442 | This function is like the other "locate" section routines that are | |
11443 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11444 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11445 | |
11446 | The result is non-zero for success, or zero if an error was found. */ | |
11447 | ||
11448 | static int | |
73869dc2 DE |
11449 | locate_v1_virtual_dwo_sections (asection *sectp, |
11450 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11451 | { |
11452 | const struct dwop_section_names *names = &dwop_section_names; | |
11453 | ||
11454 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11455 | { | |
11456 | /* There can be only one. */ | |
049412e3 | 11457 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11458 | return 0; |
049412e3 | 11459 | sections->abbrev.s.section = sectp; |
fd361982 | 11460 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11461 | } |
11462 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11463 | || section_is_p (sectp->name, &names->types_dwo)) | |
11464 | { | |
11465 | /* There can be only one. */ | |
049412e3 | 11466 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11467 | return 0; |
049412e3 | 11468 | sections->info_or_types.s.section = sectp; |
fd361982 | 11469 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11470 | } |
11471 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11472 | { | |
11473 | /* There can be only one. */ | |
049412e3 | 11474 | if (sections->line.s.section != NULL) |
80626a55 | 11475 | return 0; |
049412e3 | 11476 | sections->line.s.section = sectp; |
fd361982 | 11477 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11478 | } |
11479 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11480 | { | |
11481 | /* There can be only one. */ | |
049412e3 | 11482 | if (sections->loc.s.section != NULL) |
80626a55 | 11483 | return 0; |
049412e3 | 11484 | sections->loc.s.section = sectp; |
fd361982 | 11485 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11486 | } |
11487 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11488 | { | |
11489 | /* There can be only one. */ | |
049412e3 | 11490 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11491 | return 0; |
049412e3 | 11492 | sections->macinfo.s.section = sectp; |
fd361982 | 11493 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11494 | } |
11495 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11496 | { | |
11497 | /* There can be only one. */ | |
049412e3 | 11498 | if (sections->macro.s.section != NULL) |
80626a55 | 11499 | return 0; |
049412e3 | 11500 | sections->macro.s.section = sectp; |
fd361982 | 11501 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11502 | } |
11503 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11504 | { | |
11505 | /* There can be only one. */ | |
049412e3 | 11506 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11507 | return 0; |
049412e3 | 11508 | sections->str_offsets.s.section = sectp; |
fd361982 | 11509 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11510 | } |
11511 | else | |
11512 | { | |
11513 | /* No other kind of section is valid. */ | |
11514 | return 0; | |
11515 | } | |
11516 | ||
11517 | return 1; | |
11518 | } | |
11519 | ||
73869dc2 DE |
11520 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11521 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11522 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11523 | This is for DWP version 1 files. */ | |
80626a55 DE |
11524 | |
11525 | static struct dwo_unit * | |
ed2dc618 SM |
11526 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11527 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11528 | uint32_t unit_index, |
11529 | const char *comp_dir, | |
11530 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
11531 | { |
11532 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
11533 | const struct dwp_hash_table *dwp_htab = |
11534 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11535 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11536 | const char *kind = is_debug_types ? "TU" : "CU"; |
11537 | struct dwo_file *dwo_file; | |
11538 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11539 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11540 | void **dwo_file_slot; |
80626a55 DE |
11541 | int i; |
11542 | ||
73869dc2 DE |
11543 | gdb_assert (dwp_file->version == 1); |
11544 | ||
b4f54984 | 11545 | if (dwarf_read_debug) |
80626a55 | 11546 | { |
73869dc2 | 11547 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11548 | kind, |
73869dc2 | 11549 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11550 | dwp_file->name); |
11551 | } | |
11552 | ||
19ac8c2e | 11553 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11554 | Put a limit on the number of sections we look for so that bad data |
11555 | doesn't cause us to loop forever. */ | |
11556 | ||
73869dc2 | 11557 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11558 | (1 /* .debug_info or .debug_types */ \ |
11559 | + 1 /* .debug_abbrev */ \ | |
11560 | + 1 /* .debug_line */ \ | |
11561 | + 1 /* .debug_loc */ \ | |
11562 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11563 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11564 | + 1 /* trailing zero */) |
11565 | ||
11566 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11567 | |
73869dc2 | 11568 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11569 | { |
11570 | asection *sectp; | |
11571 | uint32_t section_nr = | |
11572 | read_4_bytes (dbfd, | |
73869dc2 DE |
11573 | dwp_htab->section_pool.v1.indices |
11574 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11575 | |
11576 | if (section_nr == 0) | |
11577 | break; | |
11578 | if (section_nr >= dwp_file->num_sections) | |
11579 | { | |
11580 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11581 | " [in module %s]"), | |
11582 | dwp_file->name); | |
11583 | } | |
11584 | ||
11585 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11586 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11587 | { |
11588 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11589 | " [in module %s]"), | |
11590 | dwp_file->name); | |
11591 | } | |
11592 | } | |
11593 | ||
11594 | if (i < 2 | |
96b79293 TT |
11595 | || sections.info_or_types.empty () |
11596 | || sections.abbrev.empty ()) | |
80626a55 DE |
11597 | { |
11598 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11599 | " [in module %s]"), | |
11600 | dwp_file->name); | |
11601 | } | |
73869dc2 | 11602 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11603 | { |
11604 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11605 | " [in module %s]"), | |
11606 | dwp_file->name); | |
11607 | } | |
11608 | ||
11609 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11610 | have dwo_unit "live" in that. At least for now. | |
11611 | ||
11612 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11613 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11614 | file, we can combine them back into a virtual DWO file to save space |
11615 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11616 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11617 | ||
791afaa2 TT |
11618 | std::string virtual_dwo_name = |
11619 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11620 | sections.abbrev.get_id (), |
11621 | sections.line.get_id (), | |
11622 | sections.loc.get_id (), | |
11623 | sections.str_offsets.get_id ()); | |
80626a55 | 11624 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11625 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11626 | virtual_dwo_name.c_str (), | |
11627 | comp_dir); | |
80626a55 DE |
11628 | /* Create one if necessary. */ |
11629 | if (*dwo_file_slot == NULL) | |
11630 | { | |
b4f54984 | 11631 | if (dwarf_read_debug) |
80626a55 DE |
11632 | { |
11633 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11634 | virtual_dwo_name.c_str ()); |
80626a55 | 11635 | } |
51ac9db5 | 11636 | dwo_file = new struct dwo_file; |
be1e3d3e | 11637 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
0ac5b59e | 11638 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11639 | dwo_file->sections.abbrev = sections.abbrev; |
11640 | dwo_file->sections.line = sections.line; | |
11641 | dwo_file->sections.loc = sections.loc; | |
11642 | dwo_file->sections.macinfo = sections.macinfo; | |
11643 | dwo_file->sections.macro = sections.macro; | |
11644 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11645 | /* The "str" section is global to the entire DWP file. */ | |
11646 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11647 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11648 | there's no need to record it in dwo_file. |
11649 | Also, we can't simply record type sections in dwo_file because | |
11650 | we record a pointer into the vector in dwo_unit. As we collect more | |
11651 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11652 | for it, invalidating all copies of pointers into the previous |
11653 | contents. */ | |
80626a55 DE |
11654 | *dwo_file_slot = dwo_file; |
11655 | } | |
11656 | else | |
11657 | { | |
b4f54984 | 11658 | if (dwarf_read_debug) |
80626a55 DE |
11659 | { |
11660 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11661 | virtual_dwo_name.c_str ()); |
80626a55 | 11662 | } |
9a3c8263 | 11663 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11664 | } |
80626a55 DE |
11665 | |
11666 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11667 | dwo_unit->dwo_file = dwo_file; | |
11668 | dwo_unit->signature = signature; | |
8d749320 SM |
11669 | dwo_unit->section = |
11670 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 11671 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11672 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11673 | |
11674 | return dwo_unit; | |
11675 | } | |
11676 | ||
73869dc2 DE |
11677 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11678 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11679 | piece within that section used by a TU/CU, return a virtual section | |
11680 | of just that piece. */ | |
11681 | ||
11682 | static struct dwarf2_section_info | |
ed2dc618 SM |
11683 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11684 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11685 | bfd_size_type offset, bfd_size_type size) |
11686 | { | |
11687 | struct dwarf2_section_info result; | |
11688 | asection *sectp; | |
11689 | ||
11690 | gdb_assert (section != NULL); | |
11691 | gdb_assert (!section->is_virtual); | |
11692 | ||
11693 | memset (&result, 0, sizeof (result)); | |
11694 | result.s.containing_section = section; | |
dc4ccb6f | 11695 | result.is_virtual = true; |
73869dc2 DE |
11696 | |
11697 | if (size == 0) | |
11698 | return result; | |
11699 | ||
96b79293 | 11700 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11701 | |
11702 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11703 | bounds of the real section. This is a pretty-rare event, so just | |
11704 | flag an error (easier) instead of a warning and trying to cope. */ | |
11705 | if (sectp == NULL | |
fd361982 | 11706 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11707 | { |
73869dc2 DE |
11708 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11709 | " in section %s [in module %s]"), | |
fd361982 | 11710 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11711 | objfile_name (dwarf2_per_objfile->objfile)); |
11712 | } | |
11713 | ||
11714 | result.virtual_offset = offset; | |
11715 | result.size = size; | |
11716 | return result; | |
11717 | } | |
11718 | ||
11719 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11720 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11721 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11722 | This is for DWP version 2 files. */ | |
11723 | ||
11724 | static struct dwo_unit * | |
ed2dc618 SM |
11725 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11726 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11727 | uint32_t unit_index, |
11728 | const char *comp_dir, | |
11729 | ULONGEST signature, int is_debug_types) | |
11730 | { | |
11731 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11732 | const struct dwp_hash_table *dwp_htab = | |
11733 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11734 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11735 | const char *kind = is_debug_types ? "TU" : "CU"; |
11736 | struct dwo_file *dwo_file; | |
11737 | struct dwo_unit *dwo_unit; | |
11738 | struct virtual_v2_dwo_sections sections; | |
11739 | void **dwo_file_slot; | |
73869dc2 DE |
11740 | int i; |
11741 | ||
11742 | gdb_assert (dwp_file->version == 2); | |
11743 | ||
b4f54984 | 11744 | if (dwarf_read_debug) |
73869dc2 DE |
11745 | { |
11746 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11747 | kind, | |
11748 | pulongest (unit_index), hex_string (signature), | |
11749 | dwp_file->name); | |
11750 | } | |
11751 | ||
11752 | /* Fetch the section offsets of this DWO unit. */ | |
11753 | ||
11754 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11755 | |
11756 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11757 | { | |
11758 | uint32_t offset = read_4_bytes (dbfd, | |
11759 | dwp_htab->section_pool.v2.offsets | |
11760 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11761 | + i) | |
11762 | * sizeof (uint32_t))); | |
11763 | uint32_t size = read_4_bytes (dbfd, | |
11764 | dwp_htab->section_pool.v2.sizes | |
11765 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11766 | + i) | |
11767 | * sizeof (uint32_t))); | |
11768 | ||
11769 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11770 | { | |
11771 | case DW_SECT_INFO: | |
11772 | case DW_SECT_TYPES: | |
11773 | sections.info_or_types_offset = offset; | |
11774 | sections.info_or_types_size = size; | |
11775 | break; | |
11776 | case DW_SECT_ABBREV: | |
11777 | sections.abbrev_offset = offset; | |
11778 | sections.abbrev_size = size; | |
11779 | break; | |
11780 | case DW_SECT_LINE: | |
11781 | sections.line_offset = offset; | |
11782 | sections.line_size = size; | |
11783 | break; | |
11784 | case DW_SECT_LOC: | |
11785 | sections.loc_offset = offset; | |
11786 | sections.loc_size = size; | |
11787 | break; | |
11788 | case DW_SECT_STR_OFFSETS: | |
11789 | sections.str_offsets_offset = offset; | |
11790 | sections.str_offsets_size = size; | |
11791 | break; | |
11792 | case DW_SECT_MACINFO: | |
11793 | sections.macinfo_offset = offset; | |
11794 | sections.macinfo_size = size; | |
11795 | break; | |
11796 | case DW_SECT_MACRO: | |
11797 | sections.macro_offset = offset; | |
11798 | sections.macro_size = size; | |
11799 | break; | |
11800 | } | |
11801 | } | |
11802 | ||
11803 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11804 | have dwo_unit "live" in that. At least for now. | |
11805 | ||
11806 | The DWP file can be made up of a random collection of CUs and TUs. | |
11807 | However, for each CU + set of TUs that came from the same original DWO | |
11808 | file, we can combine them back into a virtual DWO file to save space | |
11809 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11810 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11811 | ||
791afaa2 TT |
11812 | std::string virtual_dwo_name = |
11813 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11814 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11815 | (long) (sections.line_size ? sections.line_offset : 0), | |
11816 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11817 | (long) (sections.str_offsets_size | |
11818 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11819 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11820 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11821 | virtual_dwo_name.c_str (), | |
11822 | comp_dir); | |
73869dc2 DE |
11823 | /* Create one if necessary. */ |
11824 | if (*dwo_file_slot == NULL) | |
11825 | { | |
b4f54984 | 11826 | if (dwarf_read_debug) |
73869dc2 DE |
11827 | { |
11828 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11829 | virtual_dwo_name.c_str ()); |
73869dc2 | 11830 | } |
51ac9db5 | 11831 | dwo_file = new struct dwo_file; |
be1e3d3e | 11832 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
73869dc2 DE |
11833 | dwo_file->comp_dir = comp_dir; |
11834 | dwo_file->sections.abbrev = | |
ed2dc618 | 11835 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
11836 | sections.abbrev_offset, sections.abbrev_size); |
11837 | dwo_file->sections.line = | |
ed2dc618 | 11838 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
11839 | sections.line_offset, sections.line_size); |
11840 | dwo_file->sections.loc = | |
ed2dc618 | 11841 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
11842 | sections.loc_offset, sections.loc_size); |
11843 | dwo_file->sections.macinfo = | |
ed2dc618 | 11844 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
11845 | sections.macinfo_offset, sections.macinfo_size); |
11846 | dwo_file->sections.macro = | |
ed2dc618 | 11847 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
11848 | sections.macro_offset, sections.macro_size); |
11849 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
11850 | create_dwp_v2_section (dwarf2_per_objfile, |
11851 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
11852 | sections.str_offsets_offset, |
11853 | sections.str_offsets_size); | |
11854 | /* The "str" section is global to the entire DWP file. */ | |
11855 | dwo_file->sections.str = dwp_file->sections.str; | |
11856 | /* The info or types section is assigned below to dwo_unit, | |
11857 | there's no need to record it in dwo_file. | |
11858 | Also, we can't simply record type sections in dwo_file because | |
11859 | we record a pointer into the vector in dwo_unit. As we collect more | |
11860 | types we'll grow the vector and eventually have to reallocate space | |
11861 | for it, invalidating all copies of pointers into the previous | |
11862 | contents. */ | |
11863 | *dwo_file_slot = dwo_file; | |
11864 | } | |
11865 | else | |
11866 | { | |
b4f54984 | 11867 | if (dwarf_read_debug) |
73869dc2 DE |
11868 | { |
11869 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11870 | virtual_dwo_name.c_str ()); |
73869dc2 | 11871 | } |
9a3c8263 | 11872 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11873 | } |
73869dc2 DE |
11874 | |
11875 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11876 | dwo_unit->dwo_file = dwo_file; | |
11877 | dwo_unit->signature = signature; | |
8d749320 SM |
11878 | dwo_unit->section = |
11879 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
11880 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
11881 | is_debug_types | |
73869dc2 DE |
11882 | ? &dwp_file->sections.types |
11883 | : &dwp_file->sections.info, | |
11884 | sections.info_or_types_offset, | |
11885 | sections.info_or_types_size); | |
11886 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11887 | ||
11888 | return dwo_unit; | |
11889 | } | |
11890 | ||
57d63ce2 DE |
11891 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
11892 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
11893 | |
11894 | static struct dwo_unit * | |
ed2dc618 SM |
11895 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11896 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 11897 | ULONGEST signature, int is_debug_types) |
80626a55 | 11898 | { |
57d63ce2 DE |
11899 | const struct dwp_hash_table *dwp_htab = |
11900 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11901 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 11902 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
11903 | uint32_t hash = signature & mask; |
11904 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
11905 | unsigned int i; | |
11906 | void **slot; | |
870f88f7 | 11907 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
11908 | |
11909 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
11910 | find_dwo_cu.signature = signature; | |
19ac8c2e | 11911 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
11912 | ? dwp_file->loaded_tus.get () |
11913 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 11914 | &find_dwo_cu, INSERT); |
80626a55 DE |
11915 | |
11916 | if (*slot != NULL) | |
9a3c8263 | 11917 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11918 | |
11919 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 11920 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
11921 | { |
11922 | ULONGEST signature_in_table; | |
11923 | ||
11924 | signature_in_table = | |
57d63ce2 | 11925 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
11926 | if (signature_in_table == signature) |
11927 | { | |
57d63ce2 DE |
11928 | uint32_t unit_index = |
11929 | read_4_bytes (dbfd, | |
11930 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 11931 | |
73869dc2 DE |
11932 | if (dwp_file->version == 1) |
11933 | { | |
ed2dc618 SM |
11934 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
11935 | dwp_file, unit_index, | |
73869dc2 DE |
11936 | comp_dir, signature, |
11937 | is_debug_types); | |
11938 | } | |
11939 | else | |
11940 | { | |
ed2dc618 SM |
11941 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
11942 | dwp_file, unit_index, | |
73869dc2 DE |
11943 | comp_dir, signature, |
11944 | is_debug_types); | |
11945 | } | |
9a3c8263 | 11946 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11947 | } |
11948 | if (signature_in_table == 0) | |
11949 | return NULL; | |
11950 | hash = (hash + hash2) & mask; | |
11951 | } | |
11952 | ||
11953 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
11954 | " [in module %s]"), | |
11955 | dwp_file->name); | |
11956 | } | |
11957 | ||
ab5088bf | 11958 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
11959 | Open the file specified by FILE_NAME and hand it off to BFD for |
11960 | preliminary analysis. Return a newly initialized bfd *, which | |
11961 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 11962 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
11963 | SEARCH_CWD is true if the current directory is to be searched. |
11964 | It will be searched before debug-file-directory. | |
13aaf454 DE |
11965 | If successful, the file is added to the bfd include table of the |
11966 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 11967 | If unable to find/open the file, return NULL. |
3019eac3 DE |
11968 | NOTE: This function is derived from symfile_bfd_open. */ |
11969 | ||
192b62ce | 11970 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
11971 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11972 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 11973 | { |
24b9144d | 11974 | int desc; |
9c02c129 DE |
11975 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
11976 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
11977 | to debug_file_directory. */ | |
e0cc99a6 | 11978 | const char *search_path; |
9c02c129 DE |
11979 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
11980 | ||
e0cc99a6 | 11981 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
11982 | if (search_cwd) |
11983 | { | |
11984 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
11985 | { |
11986 | search_path_holder.reset (concat (".", dirname_separator_string, | |
11987 | debug_file_directory, | |
11988 | (char *) NULL)); | |
11989 | search_path = search_path_holder.get (); | |
11990 | } | |
6ac97d4c | 11991 | else |
e0cc99a6 | 11992 | search_path = "."; |
6ac97d4c | 11993 | } |
9c02c129 | 11994 | else |
e0cc99a6 | 11995 | search_path = debug_file_directory; |
3019eac3 | 11996 | |
24b9144d | 11997 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
11998 | if (is_dwp) |
11999 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12000 | |
12001 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12002 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12003 | O_RDONLY | O_BINARY, &absolute_name); |
12004 | if (desc < 0) | |
12005 | return NULL; | |
12006 | ||
e0cc99a6 TT |
12007 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12008 | gnutarget, desc)); | |
9c02c129 DE |
12009 | if (sym_bfd == NULL) |
12010 | return NULL; | |
192b62ce | 12011 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12012 | |
192b62ce TT |
12013 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12014 | return NULL; | |
3019eac3 | 12015 | |
13aaf454 DE |
12016 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12017 | This is important because things like demangled_names_hash lives in the | |
12018 | objfile's per_bfd space and may have references to things like symbol | |
12019 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12020 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12021 | |
3019eac3 DE |
12022 | return sym_bfd; |
12023 | } | |
12024 | ||
ab5088bf | 12025 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12026 | COMP_DIR is the DW_AT_comp_dir attribute. |
12027 | The result is the bfd handle of the file. | |
12028 | If there is a problem finding or opening the file, return NULL. | |
12029 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12030 | same as symfile_bfd_open. */ | |
12031 | ||
192b62ce | 12032 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12033 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12034 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12035 | { |
80626a55 | 12036 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12037 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12038 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12039 | |
12040 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12041 | ||
12042 | if (comp_dir != NULL) | |
12043 | { | |
43816ebc TT |
12044 | gdb::unique_xmalloc_ptr<char> path_to_try |
12045 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12046 | |
12047 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12048 | search path, which seems useful. */ | |
ed2dc618 | 12049 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12050 | path_to_try.get (), |
ed2dc618 | 12051 | 0 /*is_dwp*/, |
192b62ce | 12052 | 1 /*search_cwd*/)); |
3019eac3 DE |
12053 | if (abfd != NULL) |
12054 | return abfd; | |
12055 | } | |
12056 | ||
12057 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12058 | is a list of paths. */ | |
12059 | ||
12060 | if (*debug_file_directory == '\0') | |
12061 | return NULL; | |
12062 | ||
ed2dc618 SM |
12063 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12064 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12065 | } |
12066 | ||
80626a55 DE |
12067 | /* This function is mapped across the sections and remembers the offset and |
12068 | size of each of the DWO debugging sections we are interested in. */ | |
12069 | ||
12070 | static void | |
12071 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12072 | { | |
9a3c8263 | 12073 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12074 | const struct dwop_section_names *names = &dwop_section_names; |
12075 | ||
12076 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12077 | { | |
049412e3 | 12078 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12079 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12080 | } |
12081 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12082 | { | |
049412e3 | 12083 | dwo_sections->info.s.section = sectp; |
fd361982 | 12084 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12085 | } |
12086 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12087 | { | |
049412e3 | 12088 | dwo_sections->line.s.section = sectp; |
fd361982 | 12089 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12090 | } |
12091 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12092 | { | |
049412e3 | 12093 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12094 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12095 | } |
41144253 | 12096 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12097 | { | |
12098 | dwo_sections->loclists.s.section = sectp; | |
12099 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12100 | } | |
80626a55 DE |
12101 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12102 | { | |
049412e3 | 12103 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12104 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12105 | } |
12106 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12107 | { | |
049412e3 | 12108 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12109 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12110 | } |
12111 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12112 | { | |
049412e3 | 12113 | dwo_sections->str.s.section = sectp; |
fd361982 | 12114 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12115 | } |
12116 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12117 | { | |
049412e3 | 12118 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12119 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12120 | } |
12121 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12122 | { | |
12123 | struct dwarf2_section_info type_section; | |
12124 | ||
12125 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12126 | type_section.s.section = sectp; |
fd361982 | 12127 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12128 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12129 | } |
12130 | } | |
12131 | ||
ab5088bf | 12132 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12133 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12134 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12135 | |
12136 | static struct dwo_file * | |
0ac5b59e DE |
12137 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12138 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12139 | { |
ed2dc618 | 12140 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12141 | |
fb1eb2f9 | 12142 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12143 | if (dbfd == NULL) |
12144 | { | |
b4f54984 | 12145 | if (dwarf_read_debug) |
80626a55 DE |
12146 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12147 | return NULL; | |
12148 | } | |
263db9a1 | 12149 | |
51ac9db5 | 12150 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12151 | dwo_file->dwo_name = dwo_name; |
12152 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12153 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12154 | |
fb1eb2f9 | 12155 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12156 | &dwo_file->sections); |
3019eac3 | 12157 | |
18a8505e AT |
12158 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12159 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12160 | |
263db9a1 | 12161 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12162 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12163 | |
b4f54984 | 12164 | if (dwarf_read_debug) |
80626a55 DE |
12165 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12166 | ||
263db9a1 | 12167 | return dwo_file.release (); |
3019eac3 DE |
12168 | } |
12169 | ||
80626a55 | 12170 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12171 | size of each of the DWP debugging sections common to version 1 and 2 that |
12172 | we are interested in. */ | |
3019eac3 | 12173 | |
80626a55 | 12174 | static void |
73869dc2 DE |
12175 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12176 | void *dwp_file_ptr) | |
3019eac3 | 12177 | { |
9a3c8263 | 12178 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12179 | const struct dwop_section_names *names = &dwop_section_names; |
12180 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12181 | |
80626a55 | 12182 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12183 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12184 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12185 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12186 | |
80626a55 DE |
12187 | /* Look for specific sections that we need. */ |
12188 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12189 | { | |
049412e3 | 12190 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12191 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12192 | } |
12193 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12194 | { | |
049412e3 | 12195 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12196 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12197 | } |
12198 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12199 | { | |
049412e3 | 12200 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12201 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12202 | } |
12203 | } | |
3019eac3 | 12204 | |
73869dc2 DE |
12205 | /* This function is mapped across the sections and remembers the offset and |
12206 | size of each of the DWP version 2 debugging sections that we are interested | |
12207 | in. This is split into a separate function because we don't know if we | |
12208 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12209 | ||
12210 | static void | |
12211 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12212 | { | |
9a3c8263 | 12213 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12214 | const struct dwop_section_names *names = &dwop_section_names; |
12215 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12216 | ||
12217 | /* Record the ELF section number for later lookup: this is what the | |
12218 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12219 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12220 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12221 | ||
12222 | /* Look for specific sections that we need. */ | |
12223 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12224 | { | |
049412e3 | 12225 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12226 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12227 | } |
12228 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12229 | { | |
049412e3 | 12230 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12231 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12232 | } |
12233 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12234 | { | |
049412e3 | 12235 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12236 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12237 | } |
12238 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12239 | { | |
049412e3 | 12240 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12241 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12242 | } |
12243 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12244 | { | |
049412e3 | 12245 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12246 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12247 | } |
12248 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12249 | { | |
049412e3 | 12250 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12251 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12252 | } |
12253 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12254 | { | |
049412e3 | 12255 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12256 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12257 | } |
12258 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12259 | { | |
049412e3 | 12260 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12261 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12262 | } |
12263 | } | |
12264 | ||
80626a55 | 12265 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12266 | |
80626a55 DE |
12267 | static hashval_t |
12268 | hash_dwp_loaded_cutus (const void *item) | |
12269 | { | |
9a3c8263 | 12270 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12271 | |
80626a55 DE |
12272 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12273 | return dwo_unit->signature; | |
3019eac3 DE |
12274 | } |
12275 | ||
80626a55 | 12276 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12277 | |
80626a55 DE |
12278 | static int |
12279 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12280 | { |
9a3c8263 SM |
12281 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12282 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12283 | |
80626a55 DE |
12284 | return dua->signature == dub->signature; |
12285 | } | |
3019eac3 | 12286 | |
80626a55 | 12287 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12288 | |
48b490f2 | 12289 | static htab_up |
298e9637 | 12290 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12291 | { |
48b490f2 TT |
12292 | return htab_up (htab_create_alloc (3, |
12293 | hash_dwp_loaded_cutus, | |
12294 | eq_dwp_loaded_cutus, | |
12295 | NULL, xcalloc, xfree)); | |
80626a55 | 12296 | } |
3019eac3 | 12297 | |
ab5088bf DE |
12298 | /* Try to open DWP file FILE_NAME. |
12299 | The result is the bfd handle of the file. | |
12300 | If there is a problem finding or opening the file, return NULL. | |
12301 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12302 | same as symfile_bfd_open. */ | |
12303 | ||
192b62ce | 12304 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12305 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12306 | const char *file_name) | |
ab5088bf | 12307 | { |
ed2dc618 SM |
12308 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12309 | 1 /*is_dwp*/, | |
192b62ce | 12310 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12311 | if (abfd != NULL) |
12312 | return abfd; | |
12313 | ||
12314 | /* Work around upstream bug 15652. | |
12315 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12316 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12317 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12318 | of the executable's path may have discarded the needed info. | |
12319 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12320 | .gnu_debuglink, but that doesn't exist yet.] | |
12321 | Strip the directory from FILE_NAME and search again. */ | |
12322 | if (*debug_file_directory != '\0') | |
12323 | { | |
12324 | /* Don't implicitly search the current directory here. | |
12325 | If the user wants to search "." to handle this case, | |
12326 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12327 | return try_open_dwop_file (dwarf2_per_objfile, |
12328 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12329 | 0 /*search_cwd*/); |
12330 | } | |
12331 | ||
12332 | return NULL; | |
ab5088bf DE |
12333 | } |
12334 | ||
80626a55 DE |
12335 | /* Initialize the use of the DWP file for the current objfile. |
12336 | By convention the name of the DWP file is ${objfile}.dwp. | |
12337 | The result is NULL if it can't be found. */ | |
a766d390 | 12338 | |
400174b1 | 12339 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12340 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12341 | { |
12342 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12343 | |
82bf32bc JK |
12344 | /* Try to find first .dwp for the binary file before any symbolic links |
12345 | resolving. */ | |
6c447423 DE |
12346 | |
12347 | /* If the objfile is a debug file, find the name of the real binary | |
12348 | file and get the name of dwp file from there. */ | |
d721ba37 | 12349 | std::string dwp_name; |
6c447423 DE |
12350 | if (objfile->separate_debug_objfile_backlink != NULL) |
12351 | { | |
12352 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12353 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12354 | |
d721ba37 | 12355 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12356 | } |
12357 | else | |
d721ba37 PA |
12358 | dwp_name = objfile->original_name; |
12359 | ||
12360 | dwp_name += ".dwp"; | |
80626a55 | 12361 | |
ed2dc618 | 12362 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12363 | if (dbfd == NULL |
12364 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12365 | { | |
12366 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12367 | dwp_name = objfile_name (objfile); |
12368 | dwp_name += ".dwp"; | |
ed2dc618 | 12369 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12370 | } |
12371 | ||
80626a55 DE |
12372 | if (dbfd == NULL) |
12373 | { | |
b4f54984 | 12374 | if (dwarf_read_debug) |
d721ba37 | 12375 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12376 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12377 | } |
400174b1 TT |
12378 | |
12379 | const char *name = bfd_get_filename (dbfd.get ()); | |
12380 | std::unique_ptr<struct dwp_file> dwp_file | |
12381 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12382 | |
0a0f4c01 | 12383 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12384 | dwp_file->elf_sections = |
12385 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12386 | dwp_file->num_sections, asection *); | |
12387 | ||
400174b1 TT |
12388 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12389 | dwarf2_locate_common_dwp_sections, | |
12390 | dwp_file.get ()); | |
80626a55 | 12391 | |
400174b1 TT |
12392 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12393 | 0); | |
80626a55 | 12394 | |
400174b1 TT |
12395 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12396 | 1); | |
80626a55 | 12397 | |
73869dc2 | 12398 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12399 | if (dwp_file->cus && dwp_file->tus |
12400 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12401 | { |
12402 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12403 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12404 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12405 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12406 | " TU version %s [in DWP file %s]"), | |
12407 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12408 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12409 | } |
08302ed2 DE |
12410 | |
12411 | if (dwp_file->cus) | |
12412 | dwp_file->version = dwp_file->cus->version; | |
12413 | else if (dwp_file->tus) | |
12414 | dwp_file->version = dwp_file->tus->version; | |
12415 | else | |
12416 | dwp_file->version = 2; | |
73869dc2 DE |
12417 | |
12418 | if (dwp_file->version == 2) | |
400174b1 TT |
12419 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12420 | dwarf2_locate_v2_dwp_sections, | |
12421 | dwp_file.get ()); | |
73869dc2 | 12422 | |
298e9637 SM |
12423 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12424 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12425 | |
b4f54984 | 12426 | if (dwarf_read_debug) |
80626a55 DE |
12427 | { |
12428 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12429 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12430 | " %s CUs, %s TUs\n", |
12431 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12432 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12433 | } |
12434 | ||
12435 | return dwp_file; | |
3019eac3 | 12436 | } |
c906108c | 12437 | |
ab5088bf DE |
12438 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12439 | ||
12440 | static struct dwp_file * | |
ed2dc618 | 12441 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12442 | { |
12443 | if (! dwarf2_per_objfile->dwp_checked) | |
12444 | { | |
ed2dc618 SM |
12445 | dwarf2_per_objfile->dwp_file |
12446 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12447 | dwarf2_per_objfile->dwp_checked = 1; |
12448 | } | |
400174b1 | 12449 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12450 | } |
12451 | ||
80626a55 DE |
12452 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12453 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12454 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12455 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12456 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12457 | ||
12458 | This is called, for example, when wanting to read a variable with a | |
12459 | complex location. Therefore we don't want to do file i/o for every call. | |
12460 | Therefore we don't want to look for a DWO file on every call. | |
12461 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12462 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12463 | for a DWO file. | |
12464 | ||
1c658ad5 | 12465 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12466 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12467 | |
3019eac3 | 12468 | static struct dwo_unit * |
80626a55 DE |
12469 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12470 | const char *dwo_name, const char *comp_dir, | |
12471 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12472 | { |
ed2dc618 | 12473 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12474 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12475 | const char *kind = is_debug_types ? "TU" : "CU"; |
12476 | void **dwo_file_slot; | |
3019eac3 | 12477 | struct dwo_file *dwo_file; |
80626a55 | 12478 | struct dwp_file *dwp_file; |
cb1df416 | 12479 | |
6a506a2d DE |
12480 | /* First see if there's a DWP file. |
12481 | If we have a DWP file but didn't find the DWO inside it, don't | |
12482 | look for the original DWO file. It makes gdb behave differently | |
12483 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12484 | |
ed2dc618 | 12485 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12486 | if (dwp_file != NULL) |
cf2c3c16 | 12487 | { |
80626a55 DE |
12488 | const struct dwp_hash_table *dwp_htab = |
12489 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12490 | ||
12491 | if (dwp_htab != NULL) | |
12492 | { | |
12493 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12494 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12495 | signature, is_debug_types); |
80626a55 DE |
12496 | |
12497 | if (dwo_cutu != NULL) | |
12498 | { | |
b4f54984 | 12499 | if (dwarf_read_debug) |
80626a55 DE |
12500 | { |
12501 | fprintf_unfiltered (gdb_stdlog, | |
12502 | "Virtual DWO %s %s found: @%s\n", | |
12503 | kind, hex_string (signature), | |
12504 | host_address_to_string (dwo_cutu)); | |
12505 | } | |
12506 | return dwo_cutu; | |
12507 | } | |
12508 | } | |
12509 | } | |
6a506a2d | 12510 | else |
80626a55 | 12511 | { |
6a506a2d | 12512 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12513 | |
ed2dc618 SM |
12514 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12515 | dwo_name, comp_dir); | |
6a506a2d | 12516 | if (*dwo_file_slot == NULL) |
80626a55 | 12517 | { |
6a506a2d DE |
12518 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12519 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12520 | } |
6a506a2d | 12521 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12522 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12523 | |
6a506a2d | 12524 | if (dwo_file != NULL) |
19c3d4c9 | 12525 | { |
6a506a2d DE |
12526 | struct dwo_unit *dwo_cutu = NULL; |
12527 | ||
12528 | if (is_debug_types && dwo_file->tus) | |
12529 | { | |
12530 | struct dwo_unit find_dwo_cutu; | |
12531 | ||
12532 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12533 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12534 | dwo_cutu |
b0b6a987 TT |
12535 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12536 | &find_dwo_cutu); | |
6a506a2d | 12537 | } |
33c5cd75 | 12538 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12539 | { |
33c5cd75 DB |
12540 | struct dwo_unit find_dwo_cutu; |
12541 | ||
12542 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12543 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12544 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12545 | &find_dwo_cutu); |
6a506a2d DE |
12546 | } |
12547 | ||
12548 | if (dwo_cutu != NULL) | |
12549 | { | |
b4f54984 | 12550 | if (dwarf_read_debug) |
6a506a2d DE |
12551 | { |
12552 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12553 | kind, dwo_name, hex_string (signature), | |
12554 | host_address_to_string (dwo_cutu)); | |
12555 | } | |
12556 | return dwo_cutu; | |
80626a55 DE |
12557 | } |
12558 | } | |
2e276125 | 12559 | } |
9cdd5dbd | 12560 | |
80626a55 DE |
12561 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12562 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12563 | correctly to find the file. */ | |
12564 | ||
b4f54984 | 12565 | if (dwarf_read_debug) |
80626a55 DE |
12566 | { |
12567 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12568 | kind, dwo_name, hex_string (signature)); | |
12569 | } | |
3019eac3 | 12570 | |
6656a72d DE |
12571 | /* This is a warning and not a complaint because it can be caused by |
12572 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12573 | { |
12574 | /* Print the name of the DWP file if we looked there, helps the user | |
12575 | better diagnose the problem. */ | |
791afaa2 | 12576 | std::string dwp_text; |
43942612 DE |
12577 | |
12578 | if (dwp_file != NULL) | |
791afaa2 TT |
12579 | dwp_text = string_printf (" [in DWP file %s]", |
12580 | lbasename (dwp_file->name)); | |
43942612 | 12581 | |
9d8780f0 | 12582 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
12583 | " [in module %s]"), |
12584 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 12585 | dwp_text.c_str (), |
43942612 | 12586 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 12587 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 12588 | } |
3019eac3 | 12589 | return NULL; |
5fb290d7 DJ |
12590 | } |
12591 | ||
80626a55 DE |
12592 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12593 | See lookup_dwo_cutu_unit for details. */ | |
12594 | ||
12595 | static struct dwo_unit * | |
12596 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
12597 | const char *dwo_name, const char *comp_dir, | |
12598 | ULONGEST signature) | |
12599 | { | |
12600 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
12601 | } | |
12602 | ||
12603 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12604 | See lookup_dwo_cutu_unit for details. */ | |
12605 | ||
12606 | static struct dwo_unit * | |
12607 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
12608 | const char *dwo_name, const char *comp_dir) | |
12609 | { | |
12610 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
12611 | } | |
12612 | ||
89e63ee4 DE |
12613 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12614 | ||
12615 | static int | |
12616 | queue_and_load_dwo_tu (void **slot, void *info) | |
12617 | { | |
12618 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
12619 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
12620 | ULONGEST signature = dwo_unit->signature; | |
12621 | struct signatured_type *sig_type = | |
12622 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
12623 | ||
12624 | if (sig_type != NULL) | |
12625 | { | |
12626 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12627 | ||
12628 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12629 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12630 | while processing PER_CU. */ | |
12631 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
12632 | load_full_type_unit (sig_cu); | |
ae640021 | 12633 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
12634 | } |
12635 | ||
12636 | return 1; | |
12637 | } | |
12638 | ||
12639 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12640 | The DWO may have the only definition of the type, though it may not be | |
12641 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12642 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12643 | ||
12644 | static void | |
12645 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12646 | { | |
12647 | struct dwo_unit *dwo_unit; | |
12648 | struct dwo_file *dwo_file; | |
12649 | ||
12650 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 12651 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
12652 | gdb_assert (per_cu->cu != NULL); |
12653 | ||
12654 | dwo_unit = per_cu->cu->dwo_unit; | |
12655 | gdb_assert (dwo_unit != NULL); | |
12656 | ||
12657 | dwo_file = dwo_unit->dwo_file; | |
12658 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
12659 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
12660 | per_cu); | |
89e63ee4 DE |
12661 | } |
12662 | ||
3019eac3 | 12663 | /* Read in various DIEs. */ |
348e048f | 12664 | |
d389af10 | 12665 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12666 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12667 | already referenced by DW_AT_abstract_origin from the children of the | |
12668 | current DIE. */ | |
d389af10 JK |
12669 | |
12670 | static void | |
12671 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12672 | { | |
12673 | struct die_info *child_die; | |
791afaa2 | 12674 | sect_offset *offsetp; |
d389af10 JK |
12675 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12676 | struct die_info *origin_die; | |
12677 | /* Iterator of the ORIGIN_DIE children. */ | |
12678 | struct die_info *origin_child_die; | |
d389af10 | 12679 | struct attribute *attr; |
cd02d79d PA |
12680 | struct dwarf2_cu *origin_cu; |
12681 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12682 | |
12683 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12684 | if (!attr) | |
12685 | return; | |
12686 | ||
cd02d79d PA |
12687 | /* Note that following die references may follow to a die in a |
12688 | different cu. */ | |
12689 | ||
12690 | origin_cu = cu; | |
12691 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12692 | ||
12693 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12694 | symbols in. */ | |
12695 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12696 | origin_cu->list_in_scope = cu->list_in_scope; | |
12697 | ||
edb3359d DJ |
12698 | if (die->tag != origin_die->tag |
12699 | && !(die->tag == DW_TAG_inlined_subroutine | |
12700 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12701 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12702 | sect_offset_str (die->sect_off), |
12703 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12704 | |
791afaa2 | 12705 | std::vector<sect_offset> offsets; |
d389af10 | 12706 | |
3ea89b92 PMR |
12707 | for (child_die = die->child; |
12708 | child_die && child_die->tag; | |
436c571c | 12709 | child_die = child_die->sibling) |
3ea89b92 PMR |
12710 | { |
12711 | struct die_info *child_origin_die; | |
12712 | struct dwarf2_cu *child_origin_cu; | |
12713 | ||
12714 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12715 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12716 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12717 | present in the abstract instance but not referenced in the concrete | |
12718 | one. */ | |
216f72a1 JK |
12719 | if (child_die->tag == DW_TAG_call_site |
12720 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12721 | continue; |
12722 | ||
c38f313d DJ |
12723 | /* For each CHILD_DIE, find the corresponding child of |
12724 | ORIGIN_DIE. If there is more than one layer of | |
12725 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12726 | but GCC versions at least through 4.4 generate this (GCC PR | |
12727 | 40573). */ | |
3ea89b92 PMR |
12728 | child_origin_die = child_die; |
12729 | child_origin_cu = cu; | |
c38f313d DJ |
12730 | while (1) |
12731 | { | |
cd02d79d PA |
12732 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12733 | child_origin_cu); | |
c38f313d DJ |
12734 | if (attr == NULL) |
12735 | break; | |
cd02d79d PA |
12736 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12737 | &child_origin_cu); | |
c38f313d DJ |
12738 | } |
12739 | ||
d389af10 JK |
12740 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12741 | counterpart may exist. */ | |
c38f313d | 12742 | if (child_origin_die != child_die) |
d389af10 | 12743 | { |
edb3359d DJ |
12744 | if (child_die->tag != child_origin_die->tag |
12745 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12746 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12747 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12748 | "different tags"), |
9d8780f0 SM |
12749 | sect_offset_str (child_die->sect_off), |
12750 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12751 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12752 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12753 | "different parents"), |
9d8780f0 SM |
12754 | sect_offset_str (child_die->sect_off), |
12755 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12756 | else |
791afaa2 | 12757 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12758 | } |
d389af10 | 12759 | } |
791afaa2 TT |
12760 | std::sort (offsets.begin (), offsets.end ()); |
12761 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12762 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12763 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12764 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12765 | "to DIE %s as their abstract origin"), |
12766 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12767 | |
791afaa2 | 12768 | offsetp = offsets.data (); |
d389af10 JK |
12769 | origin_child_die = origin_die->child; |
12770 | while (origin_child_die && origin_child_die->tag) | |
12771 | { | |
12772 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 12773 | while (offsetp < offsets_end |
9c541725 | 12774 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 12775 | offsetp++; |
b64f50a1 | 12776 | if (offsetp >= offsets_end |
9c541725 | 12777 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 12778 | { |
adde2bff DE |
12779 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
12780 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
12781 | This can happen with mutually referenced abstract_origins. | |
12782 | PR 16581. */ | |
12783 | if (!origin_child_die->in_process) | |
12784 | process_die (origin_child_die, origin_cu); | |
d389af10 | 12785 | } |
436c571c | 12786 | origin_child_die = origin_child_die->sibling; |
d389af10 | 12787 | } |
cd02d79d | 12788 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
12789 | |
12790 | if (cu != origin_cu) | |
12791 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
12792 | } |
12793 | ||
c906108c | 12794 | static void |
e7c27a73 | 12795 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12796 | { |
518817b3 | 12797 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12798 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 12799 | struct context_stack *newobj; |
c906108c SS |
12800 | CORE_ADDR lowpc; |
12801 | CORE_ADDR highpc; | |
12802 | struct die_info *child_die; | |
edb3359d | 12803 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 12804 | const char *name; |
e142c38c | 12805 | CORE_ADDR baseaddr; |
801e3a5b | 12806 | struct block *block; |
edb3359d | 12807 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 12808 | std::vector<struct symbol *> template_args; |
34eaf542 | 12809 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
12810 | |
12811 | if (inlined_func) | |
12812 | { | |
12813 | /* If we do not have call site information, we can't show the | |
12814 | caller of this inlined function. That's too confusing, so | |
12815 | only use the scope for local variables. */ | |
12816 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
12817 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
12818 | if (call_line == NULL || call_file == NULL) | |
12819 | { | |
12820 | read_lexical_block_scope (die, cu); | |
12821 | return; | |
12822 | } | |
12823 | } | |
c906108c | 12824 | |
b3b3bada | 12825 | baseaddr = objfile->text_section_offset (); |
e142c38c | 12826 | |
94af9270 | 12827 | name = dwarf2_name (die, cu); |
c906108c | 12828 | |
e8d05480 JB |
12829 | /* Ignore functions with missing or empty names. These are actually |
12830 | illegal according to the DWARF standard. */ | |
12831 | if (name == NULL) | |
12832 | { | |
b98664d3 | 12833 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 12834 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
12835 | return; |
12836 | } | |
12837 | ||
12838 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 12839 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 12840 | <= PC_BOUNDS_INVALID) |
e8d05480 | 12841 | { |
ae4d0c03 PM |
12842 | attr = dwarf2_attr (die, DW_AT_external, cu); |
12843 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 12844 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
12845 | "for subprogram DIE at %s"), |
12846 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
12847 | return; |
12848 | } | |
c906108c | 12849 | |
3e29f34a MR |
12850 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12851 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12852 | |
34eaf542 TT |
12853 | /* If we have any template arguments, then we must allocate a |
12854 | different sort of symbol. */ | |
436c571c | 12855 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
12856 | { |
12857 | if (child_die->tag == DW_TAG_template_type_param | |
12858 | || child_die->tag == DW_TAG_template_value_param) | |
12859 | { | |
e623cf5d | 12860 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 12861 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
12862 | break; |
12863 | } | |
12864 | } | |
12865 | ||
c24bdb02 | 12866 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
12867 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
12868 | (struct symbol *) templ_func); | |
4c2df51b | 12869 | |
81873cc8 | 12870 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 12871 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
12872 | cu->language); |
12873 | ||
4cecd739 DJ |
12874 | /* If there is a location expression for DW_AT_frame_base, record |
12875 | it. */ | |
e142c38c | 12876 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 12877 | if (attr != nullptr) |
fe978cb0 | 12878 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 12879 | |
63e43d3a PMR |
12880 | /* If there is a location for the static link, record it. */ |
12881 | newobj->static_link = NULL; | |
12882 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 12883 | if (attr != nullptr) |
63e43d3a | 12884 | { |
224c3ddb SM |
12885 | newobj->static_link |
12886 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 12887 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
09ba997f | 12888 | cu->per_cu->addr_type ()); |
63e43d3a PMR |
12889 | } |
12890 | ||
c24bdb02 | 12891 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 12892 | |
639d11d3 | 12893 | if (die->child != NULL) |
c906108c | 12894 | { |
639d11d3 | 12895 | child_die = die->child; |
c906108c SS |
12896 | while (child_die && child_die->tag) |
12897 | { | |
34eaf542 TT |
12898 | if (child_die->tag == DW_TAG_template_type_param |
12899 | || child_die->tag == DW_TAG_template_value_param) | |
12900 | { | |
12901 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12902 | ||
f1078f66 | 12903 | if (arg != NULL) |
2f4732b0 | 12904 | template_args.push_back (arg); |
34eaf542 TT |
12905 | } |
12906 | else | |
12907 | process_die (child_die, cu); | |
436c571c | 12908 | child_die = child_die->sibling; |
c906108c SS |
12909 | } |
12910 | } | |
12911 | ||
d389af10 JK |
12912 | inherit_abstract_dies (die, cu); |
12913 | ||
4a811a97 UW |
12914 | /* If we have a DW_AT_specification, we might need to import using |
12915 | directives from the context of the specification DIE. See the | |
12916 | comment in determine_prefix. */ | |
12917 | if (cu->language == language_cplus | |
12918 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
12919 | { | |
12920 | struct dwarf2_cu *spec_cu = cu; | |
12921 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
12922 | ||
12923 | while (spec_die) | |
12924 | { | |
12925 | child_die = spec_die->child; | |
12926 | while (child_die && child_die->tag) | |
12927 | { | |
12928 | if (child_die->tag == DW_TAG_imported_module) | |
12929 | process_die (child_die, spec_cu); | |
436c571c | 12930 | child_die = child_die->sibling; |
4a811a97 UW |
12931 | } |
12932 | ||
12933 | /* In some cases, GCC generates specification DIEs that | |
12934 | themselves contain DW_AT_specification attributes. */ | |
12935 | spec_die = die_specification (spec_die, &spec_cu); | |
12936 | } | |
12937 | } | |
12938 | ||
c24bdb02 | 12939 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 12940 | /* Make a block for the local symbols within. */ |
c24bdb02 | 12941 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 12942 | cstk.static_link, lowpc, highpc); |
801e3a5b | 12943 | |
df8a16a1 | 12944 | /* For C++, set the block's scope. */ |
45280282 IB |
12945 | if ((cu->language == language_cplus |
12946 | || cu->language == language_fortran | |
c44af4eb TT |
12947 | || cu->language == language_d |
12948 | || cu->language == language_rust) | |
4d4ec4e5 | 12949 | && cu->processing_has_namespace_info) |
195a3f6c TT |
12950 | block_set_scope (block, determine_prefix (die, cu), |
12951 | &objfile->objfile_obstack); | |
df8a16a1 | 12952 | |
801e3a5b JB |
12953 | /* If we have address ranges, record them. */ |
12954 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 12955 | |
a60f3166 | 12956 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 12957 | |
34eaf542 | 12958 | /* Attach template arguments to function. */ |
2f4732b0 | 12959 | if (!template_args.empty ()) |
34eaf542 TT |
12960 | { |
12961 | gdb_assert (templ_func != NULL); | |
12962 | ||
2f4732b0 | 12963 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 12964 | templ_func->template_arguments |
8d749320 SM |
12965 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
12966 | templ_func->n_template_arguments); | |
34eaf542 | 12967 | memcpy (templ_func->template_arguments, |
2f4732b0 | 12968 | template_args.data (), |
34eaf542 | 12969 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
12970 | |
12971 | /* Make sure that the symtab is set on the new symbols. Even | |
12972 | though they don't appear in this symtab directly, other parts | |
12973 | of gdb assume that symbols do, and this is reasonably | |
12974 | true. */ | |
8634679f | 12975 | for (symbol *sym : template_args) |
3e1d3d8c | 12976 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
12977 | } |
12978 | ||
208d8187 JB |
12979 | /* In C++, we can have functions nested inside functions (e.g., when |
12980 | a function declares a class that has methods). This means that | |
12981 | when we finish processing a function scope, we may need to go | |
12982 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
12983 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
12984 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 12985 | |
921e78cf JB |
12986 | /* If we've finished processing a top-level function, subsequent |
12987 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
12988 | if (cu->get_builder ()->outermost_context_p ()) |
12989 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
12990 | } |
12991 | ||
12992 | /* Process all the DIES contained within a lexical block scope. Start | |
12993 | a new scope, process the dies, and then close the scope. */ | |
12994 | ||
12995 | static void | |
e7c27a73 | 12996 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12997 | { |
518817b3 | 12998 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12999 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13000 | CORE_ADDR lowpc, highpc; |
13001 | struct die_info *child_die; | |
e142c38c DJ |
13002 | CORE_ADDR baseaddr; |
13003 | ||
b3b3bada | 13004 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13005 | |
13006 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13007 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13008 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13009 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13010 | describe ranges. */ |
e385593e JK |
13011 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13012 | { | |
13013 | case PC_BOUNDS_NOT_PRESENT: | |
13014 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13015 | there was no wrapping by that DW_TAG_lexical_block. | |
13016 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13017 | for (child_die = die->child; | |
13018 | child_die != NULL && child_die->tag; | |
436c571c | 13019 | child_die = child_die->sibling) |
e385593e JK |
13020 | process_die (child_die, cu); |
13021 | return; | |
13022 | case PC_BOUNDS_INVALID: | |
13023 | return; | |
13024 | } | |
3e29f34a MR |
13025 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13026 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13027 | |
c24bdb02 | 13028 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13029 | if (die->child != NULL) |
c906108c | 13030 | { |
639d11d3 | 13031 | child_die = die->child; |
c906108c SS |
13032 | while (child_die && child_die->tag) |
13033 | { | |
e7c27a73 | 13034 | process_die (child_die, cu); |
436c571c | 13035 | child_die = child_die->sibling; |
c906108c SS |
13036 | } |
13037 | } | |
3ea89b92 | 13038 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13039 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13040 | |
c24bdb02 KS |
13041 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13042 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13043 | { |
801e3a5b | 13044 | struct block *block |
c24bdb02 | 13045 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13046 | cstk.start_addr, highpc); |
801e3a5b JB |
13047 | |
13048 | /* Note that recording ranges after traversing children, as we | |
13049 | do here, means that recording a parent's ranges entails | |
13050 | walking across all its children's ranges as they appear in | |
13051 | the address map, which is quadratic behavior. | |
13052 | ||
13053 | It would be nicer to record the parent's ranges before | |
13054 | traversing its children, simply overriding whatever you find | |
13055 | there. But since we don't even decide whether to create a | |
13056 | block until after we've traversed its children, that's hard | |
13057 | to do. */ | |
13058 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13059 | } |
c24bdb02 KS |
13060 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13061 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13062 | } |
13063 | ||
216f72a1 | 13064 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13065 | |
13066 | static void | |
13067 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13068 | { | |
518817b3 | 13069 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13070 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13071 | CORE_ADDR pc, baseaddr; | |
13072 | struct attribute *attr; | |
13073 | struct call_site *call_site, call_site_local; | |
13074 | void **slot; | |
13075 | int nparams; | |
13076 | struct die_info *child_die; | |
13077 | ||
b3b3bada | 13078 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13079 | |
216f72a1 JK |
13080 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13081 | if (attr == NULL) | |
13082 | { | |
13083 | /* This was a pre-DWARF-5 GNU extension alias | |
13084 | for DW_AT_call_return_pc. */ | |
13085 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13086 | } | |
96408a79 SA |
13087 | if (!attr) |
13088 | { | |
b98664d3 | 13089 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13090 | "DIE %s [in module %s]"), |
13091 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13092 | return; |
13093 | } | |
cd6c91b4 | 13094 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13095 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13096 | |
13097 | if (cu->call_site_htab == NULL) | |
13098 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13099 | NULL, &objfile->objfile_obstack, | |
13100 | hashtab_obstack_allocate, NULL); | |
13101 | call_site_local.pc = pc; | |
13102 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13103 | if (*slot != NULL) | |
13104 | { | |
b98664d3 | 13105 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13106 | "DIE %s [in module %s]"), |
13107 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13108 | objfile_name (objfile)); |
96408a79 SA |
13109 | return; |
13110 | } | |
13111 | ||
13112 | /* Count parameters at the caller. */ | |
13113 | ||
13114 | nparams = 0; | |
13115 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13116 | child_die = child_die->sibling) |
96408a79 | 13117 | { |
216f72a1 JK |
13118 | if (child_die->tag != DW_TAG_call_site_parameter |
13119 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13120 | { |
b98664d3 | 13121 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13122 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13123 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13124 | objfile_name (objfile)); |
96408a79 SA |
13125 | continue; |
13126 | } | |
13127 | ||
13128 | nparams++; | |
13129 | } | |
13130 | ||
224c3ddb SM |
13131 | call_site |
13132 | = ((struct call_site *) | |
13133 | obstack_alloc (&objfile->objfile_obstack, | |
13134 | sizeof (*call_site) | |
13135 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13136 | *slot = call_site; |
13137 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13138 | call_site->pc = pc; | |
13139 | ||
216f72a1 JK |
13140 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13141 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13142 | { |
13143 | struct die_info *func_die; | |
13144 | ||
13145 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13146 | for (func_die = die->parent; | |
13147 | func_die && func_die->tag != DW_TAG_subprogram | |
13148 | && func_die->tag != DW_TAG_subroutine_type; | |
13149 | func_die = func_die->parent); | |
13150 | ||
216f72a1 JK |
13151 | /* DW_AT_call_all_calls is a superset |
13152 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13153 | if (func_die |
216f72a1 | 13154 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13155 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13156 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13157 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13158 | { | |
13159 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13160 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13161 | both the initial caller containing the real return address PC and | |
13162 | the final callee containing the current PC of a chain of tail | |
13163 | calls do not need to have the tail call list complete. But any | |
13164 | function candidate for a virtual tail call frame searched via | |
13165 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13166 | determined unambiguously. */ | |
13167 | } | |
13168 | else | |
13169 | { | |
13170 | struct type *func_type = NULL; | |
13171 | ||
13172 | if (func_die) | |
13173 | func_type = get_die_type (func_die, cu); | |
13174 | if (func_type != NULL) | |
13175 | { | |
13176 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13177 | ||
13178 | /* Enlist this call site to the function. */ | |
13179 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13180 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13181 | } | |
13182 | else | |
b98664d3 | 13183 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13184 | "DIE %s [in module %s]"), |
13185 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13186 | } |
13187 | } | |
13188 | ||
216f72a1 JK |
13189 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13190 | if (attr == NULL) | |
13191 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13192 | if (attr == NULL) | |
13193 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13194 | if (attr == NULL) |
216f72a1 JK |
13195 | { |
13196 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13197 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13198 | } | |
96408a79 | 13199 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13200 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13201 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13202 | else if (attr->form_is_block ()) |
96408a79 SA |
13203 | { |
13204 | struct dwarf2_locexpr_baton *dlbaton; | |
13205 | ||
8d749320 | 13206 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13207 | dlbaton->data = DW_BLOCK (attr)->data; |
13208 | dlbaton->size = DW_BLOCK (attr)->size; | |
13209 | dlbaton->per_cu = cu->per_cu; | |
13210 | ||
13211 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13212 | } | |
cd6c91b4 | 13213 | else if (attr->form_is_ref ()) |
96408a79 | 13214 | { |
96408a79 SA |
13215 | struct dwarf2_cu *target_cu = cu; |
13216 | struct die_info *target_die; | |
13217 | ||
ac9ec31b | 13218 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13219 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13220 | if (die_is_declaration (target_die, target_cu)) |
13221 | { | |
7d45c7c3 | 13222 | const char *target_physname; |
9112db09 JK |
13223 | |
13224 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13225 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13226 | if (target_physname == NULL) |
9112db09 | 13227 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13228 | if (target_physname == NULL) |
b98664d3 | 13229 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13230 | "physname, for referencing DIE %s [in module %s]"), |
13231 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13232 | else |
7d455152 | 13233 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13234 | } |
13235 | else | |
13236 | { | |
13237 | CORE_ADDR lowpc; | |
13238 | ||
13239 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13240 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13241 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13242 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13243 | "low pc, for referencing DIE %s [in module %s]"), |
13244 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13245 | else |
3e29f34a MR |
13246 | { |
13247 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13248 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13249 | } | |
96408a79 SA |
13250 | } |
13251 | } | |
13252 | else | |
b98664d3 | 13253 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13254 | "block nor reference, for DIE %s [in module %s]"), |
13255 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13256 | |
13257 | call_site->per_cu = cu->per_cu; | |
13258 | ||
13259 | for (child_die = die->child; | |
13260 | child_die && child_die->tag; | |
436c571c | 13261 | child_die = child_die->sibling) |
96408a79 | 13262 | { |
96408a79 | 13263 | struct call_site_parameter *parameter; |
1788b2d3 | 13264 | struct attribute *loc, *origin; |
96408a79 | 13265 | |
216f72a1 JK |
13266 | if (child_die->tag != DW_TAG_call_site_parameter |
13267 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13268 | { |
13269 | /* Already printed the complaint above. */ | |
13270 | continue; | |
13271 | } | |
13272 | ||
13273 | gdb_assert (call_site->parameter_count < nparams); | |
13274 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13275 | ||
1788b2d3 JK |
13276 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13277 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13278 | register is contained in DW_AT_call_value. */ |
96408a79 | 13279 | |
24c5c679 | 13280 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13281 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13282 | if (origin == NULL) | |
13283 | { | |
13284 | /* This was a pre-DWARF-5 GNU extension alias | |
13285 | for DW_AT_call_parameter. */ | |
13286 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13287 | } | |
cd6c91b4 | 13288 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13289 | { |
1788b2d3 | 13290 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13291 | |
0826b30a | 13292 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13293 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13294 | { |
13295 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13296 | binding can be done only inside one CU. Such referenced DIE | |
13297 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13298 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13299 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13300 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13301 | objfile_name (objfile)); |
d76b7dbc JK |
13302 | continue; |
13303 | } | |
9c541725 PA |
13304 | parameter->u.param_cu_off |
13305 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13306 | } |
4fc6c0d5 | 13307 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13308 | { |
b98664d3 | 13309 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13310 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13311 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13312 | continue; |
13313 | } | |
24c5c679 | 13314 | else |
96408a79 | 13315 | { |
24c5c679 JK |
13316 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13317 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13318 | if (parameter->u.dwarf_reg != -1) | |
13319 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13320 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13321 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13322 | ¶meter->u.fb_offset)) | |
13323 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13324 | else | |
13325 | { | |
b98664d3 | 13326 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13327 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13328 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13329 | "[in module %s]"), |
9d8780f0 | 13330 | sect_offset_str (child_die->sect_off), |
9c541725 | 13331 | objfile_name (objfile)); |
24c5c679 JK |
13332 | continue; |
13333 | } | |
96408a79 SA |
13334 | } |
13335 | ||
216f72a1 JK |
13336 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13337 | if (attr == NULL) | |
13338 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13339 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13340 | { |
b98664d3 | 13341 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13342 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13343 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13344 | objfile_name (objfile)); |
96408a79 SA |
13345 | continue; |
13346 | } | |
13347 | parameter->value = DW_BLOCK (attr)->data; | |
13348 | parameter->value_size = DW_BLOCK (attr)->size; | |
13349 | ||
13350 | /* Parameters are not pre-cleared by memset above. */ | |
13351 | parameter->data_value = NULL; | |
13352 | parameter->data_value_size = 0; | |
13353 | call_site->parameter_count++; | |
13354 | ||
216f72a1 JK |
13355 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13356 | if (attr == NULL) | |
13357 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13358 | if (attr != nullptr) |
96408a79 | 13359 | { |
4fc6c0d5 | 13360 | if (!attr->form_is_block ()) |
b98664d3 | 13361 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13362 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13363 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13364 | objfile_name (objfile)); |
96408a79 SA |
13365 | else |
13366 | { | |
13367 | parameter->data_value = DW_BLOCK (attr)->data; | |
13368 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13369 | } | |
13370 | } | |
13371 | } | |
13372 | } | |
13373 | ||
71a3c369 TT |
13374 | /* Helper function for read_variable. If DIE represents a virtual |
13375 | table, then return the type of the concrete object that is | |
13376 | associated with the virtual table. Otherwise, return NULL. */ | |
13377 | ||
13378 | static struct type * | |
13379 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13380 | { | |
13381 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13382 | if (attr == NULL) | |
13383 | return NULL; | |
13384 | ||
13385 | /* Find the type DIE. */ | |
13386 | struct die_info *type_die = NULL; | |
13387 | struct dwarf2_cu *type_cu = cu; | |
13388 | ||
cd6c91b4 | 13389 | if (attr->form_is_ref ()) |
71a3c369 TT |
13390 | type_die = follow_die_ref (die, attr, &type_cu); |
13391 | if (type_die == NULL) | |
13392 | return NULL; | |
13393 | ||
13394 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13395 | return NULL; | |
13396 | return die_containing_type (type_die, type_cu); | |
13397 | } | |
13398 | ||
13399 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13400 | ||
13401 | static void | |
13402 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13403 | { | |
13404 | struct rust_vtable_symbol *storage = NULL; | |
13405 | ||
13406 | if (cu->language == language_rust) | |
13407 | { | |
13408 | struct type *containing_type = rust_containing_type (die, cu); | |
13409 | ||
13410 | if (containing_type != NULL) | |
13411 | { | |
518817b3 | 13412 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13413 | |
468c0cbb | 13414 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13415 | initialize_objfile_symbol (storage); |
13416 | storage->concrete_type = containing_type; | |
cf724bc9 | 13417 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13418 | } |
13419 | } | |
13420 | ||
e4a62c65 TV |
13421 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13422 | struct attribute *abstract_origin | |
13423 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13424 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13425 | if (res == NULL && loc && abstract_origin) | |
13426 | { | |
13427 | /* We have a variable without a name, but with a location and an abstract | |
13428 | origin. This may be a concrete instance of an abstract variable | |
13429 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13430 | later. */ | |
13431 | struct dwarf2_cu *origin_cu = cu; | |
13432 | struct die_info *origin_die | |
13433 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13434 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13435 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13436 | } |
71a3c369 TT |
13437 | } |
13438 | ||
43988095 JK |
13439 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13440 | reading .debug_rnglists. | |
13441 | Callback's type should be: | |
13442 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13443 | Return true if the attributes are present and valid, otherwise, | |
13444 | return false. */ | |
13445 | ||
13446 | template <typename Callback> | |
13447 | static bool | |
13448 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13449 | Callback &&callback) | |
13450 | { | |
ed2dc618 | 13451 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13452 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13453 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13454 | bfd *obfd = objfile->obfd; |
43988095 | 13455 | /* Base address selection entry. */ |
2b24b6e4 | 13456 | gdb::optional<CORE_ADDR> base; |
43988095 | 13457 | const gdb_byte *buffer; |
43988095 JK |
13458 | CORE_ADDR baseaddr; |
13459 | bool overflow = false; | |
13460 | ||
43988095 JK |
13461 | base = cu->base_address; |
13462 | ||
96b79293 | 13463 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13464 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13465 | { | |
b98664d3 | 13466 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13467 | offset); |
13468 | return false; | |
13469 | } | |
13470 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13471 | ||
b3b3bada | 13472 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13473 | |
13474 | while (1) | |
13475 | { | |
7814882a JK |
13476 | /* Initialize it due to a false compiler warning. */ |
13477 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13478 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13479 | + dwarf2_per_objfile->rnglists.size); | |
13480 | unsigned int bytes_read; | |
13481 | ||
13482 | if (buffer == buf_end) | |
13483 | { | |
13484 | overflow = true; | |
13485 | break; | |
13486 | } | |
13487 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13488 | switch (rlet) | |
13489 | { | |
13490 | case DW_RLE_end_of_list: | |
13491 | break; | |
13492 | case DW_RLE_base_address: | |
13493 | if (buffer + cu->header.addr_size > buf_end) | |
13494 | { | |
13495 | overflow = true; | |
13496 | break; | |
13497 | } | |
c8a7a66f | 13498 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13499 | buffer += bytes_read; |
13500 | break; | |
13501 | case DW_RLE_start_length: | |
13502 | if (buffer + cu->header.addr_size > buf_end) | |
13503 | { | |
13504 | overflow = true; | |
13505 | break; | |
13506 | } | |
c8a7a66f TT |
13507 | range_beginning = cu->header.read_address (obfd, buffer, |
13508 | &bytes_read); | |
43988095 JK |
13509 | buffer += bytes_read; |
13510 | range_end = (range_beginning | |
13511 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13512 | buffer += bytes_read; | |
13513 | if (buffer > buf_end) | |
13514 | { | |
13515 | overflow = true; | |
13516 | break; | |
13517 | } | |
13518 | break; | |
13519 | case DW_RLE_offset_pair: | |
13520 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13521 | buffer += bytes_read; | |
13522 | if (buffer > buf_end) | |
13523 | { | |
13524 | overflow = true; | |
13525 | break; | |
13526 | } | |
13527 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13528 | buffer += bytes_read; | |
13529 | if (buffer > buf_end) | |
13530 | { | |
13531 | overflow = true; | |
13532 | break; | |
13533 | } | |
13534 | break; | |
13535 | case DW_RLE_start_end: | |
13536 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13537 | { | |
13538 | overflow = true; | |
13539 | break; | |
13540 | } | |
c8a7a66f TT |
13541 | range_beginning = cu->header.read_address (obfd, buffer, |
13542 | &bytes_read); | |
43988095 | 13543 | buffer += bytes_read; |
c8a7a66f | 13544 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13545 | buffer += bytes_read; |
13546 | break; | |
13547 | default: | |
b98664d3 | 13548 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13549 | return false; |
13550 | } | |
13551 | if (rlet == DW_RLE_end_of_list || overflow) | |
13552 | break; | |
13553 | if (rlet == DW_RLE_base_address) | |
13554 | continue; | |
13555 | ||
2b24b6e4 | 13556 | if (!base.has_value ()) |
43988095 JK |
13557 | { |
13558 | /* We have no valid base address for the ranges | |
13559 | data. */ | |
b98664d3 | 13560 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13561 | return false; |
13562 | } | |
13563 | ||
13564 | if (range_beginning > range_end) | |
13565 | { | |
13566 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13567 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13568 | return false; |
13569 | } | |
13570 | ||
13571 | /* Empty range entries have no effect. */ | |
13572 | if (range_beginning == range_end) | |
13573 | continue; | |
13574 | ||
2b24b6e4 TT |
13575 | range_beginning += *base; |
13576 | range_end += *base; | |
43988095 JK |
13577 | |
13578 | /* A not-uncommon case of bad debug info. | |
13579 | Don't pollute the addrmap with bad data. */ | |
13580 | if (range_beginning + baseaddr == 0 | |
13581 | && !dwarf2_per_objfile->has_section_at_zero) | |
13582 | { | |
b98664d3 | 13583 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13584 | " [in module %s]"), objfile_name (objfile)); |
13585 | continue; | |
13586 | } | |
13587 | ||
13588 | callback (range_beginning, range_end); | |
13589 | } | |
13590 | ||
13591 | if (overflow) | |
13592 | { | |
b98664d3 | 13593 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13594 | "for DW_AT_ranges attribute"), |
13595 | offset); | |
13596 | return false; | |
13597 | } | |
13598 | ||
13599 | return true; | |
13600 | } | |
13601 | ||
13602 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13603 | Callback's type should be: | |
13604 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13605 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13606 | |
43988095 | 13607 | template <typename Callback> |
43039443 | 13608 | static int |
5f46c5a5 | 13609 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13610 | Callback &&callback) |
43039443 | 13611 | { |
ed2dc618 | 13612 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13613 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13614 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
13615 | struct comp_unit_head *cu_header = &cu->header; |
13616 | bfd *obfd = objfile->obfd; | |
13617 | unsigned int addr_size = cu_header->addr_size; | |
13618 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13619 | /* Base address selection entry. */ | |
2b24b6e4 | 13620 | gdb::optional<CORE_ADDR> base; |
43039443 | 13621 | unsigned int dummy; |
d521ce57 | 13622 | const gdb_byte *buffer; |
ff013f42 | 13623 | CORE_ADDR baseaddr; |
43039443 | 13624 | |
43988095 JK |
13625 | if (cu_header->version >= 5) |
13626 | return dwarf2_rnglists_process (offset, cu, callback); | |
13627 | ||
d00adf39 | 13628 | base = cu->base_address; |
43039443 | 13629 | |
96b79293 | 13630 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 13631 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 13632 | { |
b98664d3 | 13633 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13634 | offset); |
13635 | return 0; | |
13636 | } | |
dce234bc | 13637 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 13638 | |
b3b3bada | 13639 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13640 | |
43039443 JK |
13641 | while (1) |
13642 | { | |
13643 | CORE_ADDR range_beginning, range_end; | |
13644 | ||
c8a7a66f | 13645 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13646 | buffer += addr_size; |
c8a7a66f | 13647 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13648 | buffer += addr_size; |
13649 | offset += 2 * addr_size; | |
13650 | ||
13651 | /* An end of list marker is a pair of zero addresses. */ | |
13652 | if (range_beginning == 0 && range_end == 0) | |
13653 | /* Found the end of list entry. */ | |
13654 | break; | |
13655 | ||
13656 | /* Each base address selection entry is a pair of 2 values. | |
13657 | The first is the largest possible address, the second is | |
13658 | the base address. Check for a base address here. */ | |
13659 | if ((range_beginning & mask) == mask) | |
13660 | { | |
28d2bfb9 AB |
13661 | /* If we found the largest possible address, then we already |
13662 | have the base address in range_end. */ | |
13663 | base = range_end; | |
43039443 JK |
13664 | continue; |
13665 | } | |
13666 | ||
2b24b6e4 | 13667 | if (!base.has_value ()) |
43039443 JK |
13668 | { |
13669 | /* We have no valid base address for the ranges | |
13670 | data. */ | |
b98664d3 | 13671 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13672 | return 0; |
13673 | } | |
13674 | ||
9277c30c UW |
13675 | if (range_beginning > range_end) |
13676 | { | |
13677 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13678 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13679 | return 0; |
13680 | } | |
13681 | ||
13682 | /* Empty range entries have no effect. */ | |
13683 | if (range_beginning == range_end) | |
13684 | continue; | |
13685 | ||
2b24b6e4 TT |
13686 | range_beginning += *base; |
13687 | range_end += *base; | |
43039443 | 13688 | |
01093045 DE |
13689 | /* A not-uncommon case of bad debug info. |
13690 | Don't pollute the addrmap with bad data. */ | |
13691 | if (range_beginning + baseaddr == 0 | |
13692 | && !dwarf2_per_objfile->has_section_at_zero) | |
13693 | { | |
b98664d3 | 13694 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13695 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13696 | continue; |
13697 | } | |
13698 | ||
5f46c5a5 JK |
13699 | callback (range_beginning, range_end); |
13700 | } | |
13701 | ||
13702 | return 1; | |
13703 | } | |
13704 | ||
13705 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13706 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13707 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13708 | ||
13709 | static int | |
13710 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13711 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13712 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13713 | { |
518817b3 | 13714 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 13715 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 13716 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13717 | int low_set = 0; |
13718 | CORE_ADDR low = 0; | |
13719 | CORE_ADDR high = 0; | |
13720 | int retval; | |
13721 | ||
13722 | retval = dwarf2_ranges_process (offset, cu, | |
13723 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13724 | { | |
9277c30c | 13725 | if (ranges_pst != NULL) |
3e29f34a MR |
13726 | { |
13727 | CORE_ADDR lowpc; | |
13728 | CORE_ADDR highpc; | |
13729 | ||
79748972 TT |
13730 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13731 | range_beginning + baseaddr) | |
13732 | - baseaddr); | |
13733 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13734 | range_end + baseaddr) | |
13735 | - baseaddr); | |
d320c2b5 TT |
13736 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13737 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13738 | } |
ff013f42 | 13739 | |
43039443 JK |
13740 | /* FIXME: This is recording everything as a low-high |
13741 | segment of consecutive addresses. We should have a | |
13742 | data structure for discontiguous block ranges | |
13743 | instead. */ | |
13744 | if (! low_set) | |
13745 | { | |
13746 | low = range_beginning; | |
13747 | high = range_end; | |
13748 | low_set = 1; | |
13749 | } | |
13750 | else | |
13751 | { | |
13752 | if (range_beginning < low) | |
13753 | low = range_beginning; | |
13754 | if (range_end > high) | |
13755 | high = range_end; | |
13756 | } | |
5f46c5a5 JK |
13757 | }); |
13758 | if (!retval) | |
13759 | return 0; | |
43039443 JK |
13760 | |
13761 | if (! low_set) | |
13762 | /* If the first entry is an end-of-list marker, the range | |
13763 | describes an empty scope, i.e. no instructions. */ | |
13764 | return 0; | |
13765 | ||
13766 | if (low_return) | |
13767 | *low_return = low; | |
13768 | if (high_return) | |
13769 | *high_return = high; | |
13770 | return 1; | |
13771 | } | |
13772 | ||
3a2b436a JK |
13773 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
13774 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 13775 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 13776 | |
3a2b436a | 13777 | static enum pc_bounds_kind |
af34e669 | 13778 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 13779 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 13780 | dwarf2_psymtab *pst) |
c906108c | 13781 | { |
518817b3 SM |
13782 | struct dwarf2_per_objfile *dwarf2_per_objfile |
13783 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 13784 | struct attribute *attr; |
91da1414 | 13785 | struct attribute *attr_high; |
af34e669 DJ |
13786 | CORE_ADDR low = 0; |
13787 | CORE_ADDR high = 0; | |
e385593e | 13788 | enum pc_bounds_kind ret; |
c906108c | 13789 | |
91da1414 MW |
13790 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13791 | if (attr_high) | |
af34e669 | 13792 | { |
e142c38c | 13793 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13794 | if (attr != nullptr) |
91da1414 | 13795 | { |
cd6c91b4 TT |
13796 | low = attr->value_as_address (); |
13797 | high = attr_high->value_as_address (); | |
13798 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 13799 | high += low; |
91da1414 | 13800 | } |
af34e669 DJ |
13801 | else |
13802 | /* Found high w/o low attribute. */ | |
e385593e | 13803 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
13804 | |
13805 | /* Found consecutive range of addresses. */ | |
3a2b436a | 13806 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 13807 | } |
c906108c | 13808 | else |
af34e669 | 13809 | { |
e142c38c | 13810 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
13811 | if (attr != NULL) |
13812 | { | |
18a8505e | 13813 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13814 | We take advantage of the fact that DW_AT_ranges does not appear |
13815 | in DW_TAG_compile_unit of DWO files. */ | |
13816 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
13817 | unsigned int ranges_offset = (DW_UNSND (attr) | |
13818 | + (need_ranges_base | |
13819 | ? cu->ranges_base | |
13820 | : 0)); | |
2e3cf129 | 13821 | |
af34e669 | 13822 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 13823 | .debug_ranges section. */ |
2e3cf129 | 13824 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 13825 | return PC_BOUNDS_INVALID; |
43039443 | 13826 | /* Found discontinuous range of addresses. */ |
3a2b436a | 13827 | ret = PC_BOUNDS_RANGES; |
af34e669 | 13828 | } |
e385593e JK |
13829 | else |
13830 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 13831 | } |
c906108c | 13832 | |
48fbe735 | 13833 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 13834 | if (high <= low) |
e385593e | 13835 | return PC_BOUNDS_INVALID; |
c906108c SS |
13836 | |
13837 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13838 | eliminate duplicate copies of functions and vtables and such. | |
13839 | The linker will arbitrarily choose one and discard the others. | |
13840 | The AT_*_pc values for such functions refer to local labels in | |
13841 | these sections. If the section from that file was discarded, the | |
13842 | labels are not in the output, so the relocs get a value of 0. | |
13843 | If this is a discarded function, mark the pc bounds as invalid, | |
13844 | so that GDB will ignore it. */ | |
72dca2f5 | 13845 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 13846 | return PC_BOUNDS_INVALID; |
c906108c SS |
13847 | |
13848 | *lowpc = low; | |
96408a79 SA |
13849 | if (highpc) |
13850 | *highpc = high; | |
af34e669 | 13851 | return ret; |
c906108c SS |
13852 | } |
13853 | ||
b084d499 JB |
13854 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
13855 | its low and high PC addresses. Do nothing if these addresses could not | |
13856 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
13857 | and HIGHPC to the high address if greater than HIGHPC. */ | |
13858 | ||
13859 | static void | |
13860 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
13861 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13862 | struct dwarf2_cu *cu) | |
13863 | { | |
13864 | CORE_ADDR low, high; | |
13865 | struct die_info *child = die->child; | |
13866 | ||
e385593e | 13867 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 13868 | { |
325fac50 PA |
13869 | *lowpc = std::min (*lowpc, low); |
13870 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
13871 | } |
13872 | ||
13873 | /* If the language does not allow nested subprograms (either inside | |
13874 | subprograms or lexical blocks), we're done. */ | |
13875 | if (cu->language != language_ada) | |
13876 | return; | |
6e70227d | 13877 | |
b084d499 JB |
13878 | /* Check all the children of the given DIE. If it contains nested |
13879 | subprograms, then check their pc bounds. Likewise, we need to | |
13880 | check lexical blocks as well, as they may also contain subprogram | |
13881 | definitions. */ | |
13882 | while (child && child->tag) | |
13883 | { | |
13884 | if (child->tag == DW_TAG_subprogram | |
13885 | || child->tag == DW_TAG_lexical_block) | |
13886 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 13887 | child = child->sibling; |
b084d499 JB |
13888 | } |
13889 | } | |
13890 | ||
fae299cd DC |
13891 | /* Get the low and high pc's represented by the scope DIE, and store |
13892 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
13893 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
13894 | ||
13895 | static void | |
13896 | get_scope_pc_bounds (struct die_info *die, | |
13897 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13898 | struct dwarf2_cu *cu) | |
13899 | { | |
13900 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
13901 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
13902 | CORE_ADDR current_low, current_high; | |
13903 | ||
3a2b436a | 13904 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 13905 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
13906 | { |
13907 | best_low = current_low; | |
13908 | best_high = current_high; | |
13909 | } | |
13910 | else | |
13911 | { | |
13912 | struct die_info *child = die->child; | |
13913 | ||
13914 | while (child && child->tag) | |
13915 | { | |
13916 | switch (child->tag) { | |
13917 | case DW_TAG_subprogram: | |
b084d499 | 13918 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
13919 | break; |
13920 | case DW_TAG_namespace: | |
f55ee35c | 13921 | case DW_TAG_module: |
fae299cd DC |
13922 | /* FIXME: carlton/2004-01-16: Should we do this for |
13923 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
13924 | that current GCC's always emit the DIEs corresponding | |
13925 | to definitions of methods of classes as children of a | |
13926 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
13927 | the DIEs giving the declarations, which could be | |
13928 | anywhere). But I don't see any reason why the | |
13929 | standards says that they have to be there. */ | |
13930 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
13931 | ||
13932 | if (current_low != ((CORE_ADDR) -1)) | |
13933 | { | |
325fac50 PA |
13934 | best_low = std::min (best_low, current_low); |
13935 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
13936 | } |
13937 | break; | |
13938 | default: | |
0963b4bd | 13939 | /* Ignore. */ |
fae299cd DC |
13940 | break; |
13941 | } | |
13942 | ||
436c571c | 13943 | child = child->sibling; |
fae299cd DC |
13944 | } |
13945 | } | |
13946 | ||
13947 | *lowpc = best_low; | |
13948 | *highpc = best_high; | |
13949 | } | |
13950 | ||
801e3a5b JB |
13951 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
13952 | in DIE. */ | |
380bca97 | 13953 | |
801e3a5b JB |
13954 | static void |
13955 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
13956 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
13957 | { | |
518817b3 | 13958 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13959 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 13960 | struct attribute *attr; |
91da1414 | 13961 | struct attribute *attr_high; |
801e3a5b | 13962 | |
91da1414 MW |
13963 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13964 | if (attr_high) | |
801e3a5b | 13965 | { |
801e3a5b | 13966 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13967 | if (attr != nullptr) |
801e3a5b | 13968 | { |
cd6c91b4 TT |
13969 | CORE_ADDR low = attr->value_as_address (); |
13970 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 13971 | |
cd6c91b4 | 13972 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 13973 | high += low; |
9a619af0 | 13974 | |
3e29f34a MR |
13975 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
13976 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 13977 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
13978 | } |
13979 | } | |
13980 | ||
13981 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 13982 | if (attr != nullptr) |
801e3a5b | 13983 | { |
18a8505e | 13984 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13985 | We take advantage of the fact that DW_AT_ranges does not appear |
13986 | in DW_TAG_compile_unit of DWO files. */ | |
13987 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
13988 | |
13989 | /* The value of the DW_AT_ranges attribute is the offset of the | |
13990 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
13991 | unsigned long offset = (DW_UNSND (attr) |
13992 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 13993 | |
2d5f09ec | 13994 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
13995 | dwarf2_ranges_process (offset, cu, |
13996 | [&] (CORE_ADDR start, CORE_ADDR end) | |
13997 | { | |
58fdfd2c JK |
13998 | start += baseaddr; |
13999 | end += baseaddr; | |
5f46c5a5 JK |
14000 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14001 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14002 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14003 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14004 | }); |
2d5f09ec KB |
14005 | |
14006 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14007 | } |
14008 | } | |
14009 | ||
685b1105 JK |
14010 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14011 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14012 | |
685b1105 JK |
14013 | static void |
14014 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14015 | { |
38360086 | 14016 | int major, minor; |
60d5a603 JK |
14017 | |
14018 | if (cu->producer == NULL) | |
14019 | { | |
14020 | /* For unknown compilers expect their behavior is DWARF version | |
14021 | compliant. | |
14022 | ||
14023 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14024 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14025 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14026 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14027 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14028 | } |
b1ffba5a | 14029 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14030 | { |
38360086 MW |
14031 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14032 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14033 | } |
5230b05a | 14034 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14035 | { |
14036 | cu->producer_is_icc = true; | |
14037 | cu->producer_is_icc_lt_14 = major < 14; | |
14038 | } | |
c258c396 JD |
14039 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14040 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14041 | else |
14042 | { | |
14043 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14044 | compliant. */ | |
60d5a603 JK |
14045 | } |
14046 | ||
9068261f | 14047 | cu->checked_producer = true; |
685b1105 | 14048 | } |
ba919b58 | 14049 | |
685b1105 JK |
14050 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14051 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14052 | during 4.6.0 experimental. */ | |
14053 | ||
9068261f | 14054 | static bool |
685b1105 JK |
14055 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14056 | { | |
14057 | if (!cu->checked_producer) | |
14058 | check_producer (cu); | |
14059 | ||
14060 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14061 | } |
14062 | ||
c258c396 JD |
14063 | |
14064 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14065 | with incorrect is_stmt attributes. */ | |
14066 | ||
14067 | static bool | |
14068 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14069 | { | |
14070 | if (!cu->checked_producer) | |
14071 | check_producer (cu); | |
14072 | ||
14073 | return cu->producer_is_codewarrior; | |
14074 | } | |
14075 | ||
405feb71 | 14076 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14077 | DW_AT_accessibility. */ |
14078 | ||
14079 | static enum dwarf_access_attribute | |
14080 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14081 | { | |
14082 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14083 | { | |
14084 | /* The default DWARF 2 accessibility for members is public, the default | |
14085 | accessibility for inheritance is private. */ | |
14086 | ||
14087 | if (die->tag != DW_TAG_inheritance) | |
14088 | return DW_ACCESS_public; | |
14089 | else | |
14090 | return DW_ACCESS_private; | |
14091 | } | |
14092 | else | |
14093 | { | |
14094 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14095 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14096 | depends on the container kind. */ | |
14097 | ||
14098 | if (die->parent->tag == DW_TAG_class_type) | |
14099 | return DW_ACCESS_private; | |
14100 | else | |
14101 | return DW_ACCESS_public; | |
14102 | } | |
14103 | } | |
14104 | ||
74ac6d43 TT |
14105 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14106 | offset. If the attribute was not found return 0, otherwise return | |
14107 | 1. If it was found but could not properly be handled, set *OFFSET | |
14108 | to 0. */ | |
14109 | ||
14110 | static int | |
14111 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14112 | LONGEST *offset) | |
14113 | { | |
14114 | struct attribute *attr; | |
14115 | ||
14116 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14117 | if (attr != NULL) | |
14118 | { | |
14119 | *offset = 0; | |
14120 | ||
14121 | /* Note that we do not check for a section offset first here. | |
14122 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14123 | so if we see it, we can assume that a constant form is really | |
14124 | a constant and not a section offset. */ | |
cd6c91b4 | 14125 | if (attr->form_is_constant ()) |
0826b30a | 14126 | *offset = attr->constant_value (0); |
cd6c91b4 | 14127 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14128 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14129 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14130 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14131 | else | |
14132 | dwarf2_complex_location_expr_complaint (); | |
14133 | ||
14134 | return 1; | |
14135 | } | |
14136 | ||
14137 | return 0; | |
14138 | } | |
14139 | ||
c906108c SS |
14140 | /* Add an aggregate field to the field list. */ |
14141 | ||
14142 | static void | |
107d2387 | 14143 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14144 | struct dwarf2_cu *cu) |
6e70227d | 14145 | { |
518817b3 | 14146 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14147 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14148 | struct nextfield *new_field; |
14149 | struct attribute *attr; | |
14150 | struct field *fp; | |
15d034d0 | 14151 | const char *fieldname = ""; |
c906108c | 14152 | |
7d0ccb61 DJ |
14153 | if (die->tag == DW_TAG_inheritance) |
14154 | { | |
be2daae6 TT |
14155 | fip->baseclasses.emplace_back (); |
14156 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14157 | } |
14158 | else | |
14159 | { | |
be2daae6 TT |
14160 | fip->fields.emplace_back (); |
14161 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14162 | } |
be2daae6 | 14163 | |
e142c38c | 14164 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14165 | if (attr != nullptr) |
c906108c | 14166 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14167 | else |
14168 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14169 | if (new_field->accessibility != DW_ACCESS_public) |
14170 | fip->non_public_fields = 1; | |
60d5a603 | 14171 | |
e142c38c | 14172 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14173 | if (attr != nullptr) |
c906108c | 14174 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14175 | else |
14176 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14177 | |
14178 | fp = &new_field->field; | |
a9a9bd0f | 14179 | |
e142c38c | 14180 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14181 | { |
74ac6d43 TT |
14182 | LONGEST offset; |
14183 | ||
a9a9bd0f | 14184 | /* Data member other than a C++ static data member. */ |
6e70227d | 14185 | |
c906108c | 14186 | /* Get type of field. */ |
e7c27a73 | 14187 | fp->type = die_type (die, cu); |
c906108c | 14188 | |
d6a843b5 | 14189 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14190 | |
c906108c | 14191 | /* Get bit size of field (zero if none). */ |
e142c38c | 14192 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14193 | if (attr != nullptr) |
c906108c SS |
14194 | { |
14195 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14196 | } | |
14197 | else | |
14198 | { | |
14199 | FIELD_BITSIZE (*fp) = 0; | |
14200 | } | |
14201 | ||
14202 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14203 | if (handle_data_member_location (die, cu, &offset)) |
14204 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14205 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14206 | if (attr != nullptr) |
c906108c | 14207 | { |
d5a22e77 | 14208 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14209 | { |
14210 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14211 | additional bit offset from the MSB of the containing |
14212 | anonymous object to the MSB of the field. We don't | |
14213 | have to do anything special since we don't need to | |
14214 | know the size of the anonymous object. */ | |
f41f5e61 | 14215 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14216 | } |
14217 | else | |
14218 | { | |
14219 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14220 | MSB of the anonymous object, subtract off the number of |
14221 | bits from the MSB of the field to the MSB of the | |
14222 | object, and then subtract off the number of bits of | |
14223 | the field itself. The result is the bit offset of | |
14224 | the LSB of the field. */ | |
c906108c SS |
14225 | int anonymous_size; |
14226 | int bit_offset = DW_UNSND (attr); | |
14227 | ||
e142c38c | 14228 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14229 | if (attr != nullptr) |
c906108c SS |
14230 | { |
14231 | /* The size of the anonymous object containing | |
14232 | the bit field is explicit, so use the | |
14233 | indicated size (in bytes). */ | |
14234 | anonymous_size = DW_UNSND (attr); | |
14235 | } | |
14236 | else | |
14237 | { | |
14238 | /* The size of the anonymous object containing | |
14239 | the bit field must be inferred from the type | |
14240 | attribute of the data member containing the | |
14241 | bit field. */ | |
14242 | anonymous_size = TYPE_LENGTH (fp->type); | |
14243 | } | |
f41f5e61 PA |
14244 | SET_FIELD_BITPOS (*fp, |
14245 | (FIELD_BITPOS (*fp) | |
14246 | + anonymous_size * bits_per_byte | |
14247 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14248 | } |
14249 | } | |
da5b30da AA |
14250 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14251 | if (attr != NULL) | |
14252 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14253 | + attr->constant_value (0))); |
c906108c SS |
14254 | |
14255 | /* Get name of field. */ | |
39cbfefa DJ |
14256 | fieldname = dwarf2_name (die, cu); |
14257 | if (fieldname == NULL) | |
14258 | fieldname = ""; | |
d8151005 DJ |
14259 | |
14260 | /* The name is already allocated along with this objfile, so we don't | |
14261 | need to duplicate it for the type. */ | |
14262 | fp->name = fieldname; | |
c906108c SS |
14263 | |
14264 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14265 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14266 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14267 | { |
d48cc9dd | 14268 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14269 | new_field->accessibility = DW_ACCESS_private; |
14270 | fip->non_public_fields = 1; | |
14271 | } | |
14272 | } | |
a9a9bd0f | 14273 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14274 | { |
a9a9bd0f DC |
14275 | /* C++ static member. */ |
14276 | ||
14277 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14278 | is a declaration, but all versions of G++ as of this writing | |
14279 | (so through at least 3.2.1) incorrectly generate | |
14280 | DW_TAG_variable tags. */ | |
6e70227d | 14281 | |
ff355380 | 14282 | const char *physname; |
c906108c | 14283 | |
a9a9bd0f | 14284 | /* Get name of field. */ |
39cbfefa DJ |
14285 | fieldname = dwarf2_name (die, cu); |
14286 | if (fieldname == NULL) | |
c906108c SS |
14287 | return; |
14288 | ||
254e6b9e | 14289 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14290 | if (attr |
14291 | /* Only create a symbol if this is an external value. | |
14292 | new_symbol checks this and puts the value in the global symbol | |
14293 | table, which we want. If it is not external, new_symbol | |
14294 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14295 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14296 | { |
14297 | /* A static const member, not much different than an enum as far as | |
14298 | we're concerned, except that we can support more types. */ | |
14299 | new_symbol (die, NULL, cu); | |
14300 | } | |
14301 | ||
2df3850c | 14302 | /* Get physical name. */ |
ff355380 | 14303 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14304 | |
d8151005 DJ |
14305 | /* The name is already allocated along with this objfile, so we don't |
14306 | need to duplicate it for the type. */ | |
14307 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14308 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14309 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14310 | } |
14311 | else if (die->tag == DW_TAG_inheritance) | |
14312 | { | |
74ac6d43 | 14313 | LONGEST offset; |
d4b96c9a | 14314 | |
74ac6d43 TT |
14315 | /* C++ base class field. */ |
14316 | if (handle_data_member_location (die, cu, &offset)) | |
14317 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 14318 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14319 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14320 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14321 | } |
2ddeaf8a TT |
14322 | else if (die->tag == DW_TAG_variant_part) |
14323 | { | |
14324 | /* process_structure_scope will treat this DIE as a union. */ | |
14325 | process_structure_scope (die, cu); | |
14326 | ||
14327 | /* The variant part is relative to the start of the enclosing | |
14328 | structure. */ | |
14329 | SET_FIELD_BITPOS (*fp, 0); | |
14330 | fp->type = get_die_type (die, cu); | |
14331 | fp->artificial = 1; | |
14332 | fp->name = "<<variant>>"; | |
c8c81635 TT |
14333 | |
14334 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
14335 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
14336 | child sizes, being sure to account for the offset at which |
14337 | each child is seen. */ | |
c8c81635 TT |
14338 | if (TYPE_LENGTH (fp->type) == 0) |
14339 | { | |
14340 | unsigned max = 0; | |
14341 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
14342 | { |
14343 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
14344 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
14345 | if (len > max) | |
14346 | max = len; | |
14347 | } | |
c8c81635 TT |
14348 | TYPE_LENGTH (fp->type) = max; |
14349 | } | |
2ddeaf8a TT |
14350 | } |
14351 | else | |
14352 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14353 | } |
14354 | ||
883fd55a KS |
14355 | /* Can the type given by DIE define another type? */ |
14356 | ||
14357 | static bool | |
14358 | type_can_define_types (const struct die_info *die) | |
14359 | { | |
14360 | switch (die->tag) | |
14361 | { | |
14362 | case DW_TAG_typedef: | |
14363 | case DW_TAG_class_type: | |
14364 | case DW_TAG_structure_type: | |
14365 | case DW_TAG_union_type: | |
14366 | case DW_TAG_enumeration_type: | |
14367 | return true; | |
14368 | ||
14369 | default: | |
14370 | return false; | |
14371 | } | |
14372 | } | |
14373 | ||
14374 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14375 | |
14376 | static void | |
883fd55a KS |
14377 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14378 | struct dwarf2_cu *cu) | |
6e70227d | 14379 | { |
be2daae6 TT |
14380 | struct decl_field fp; |
14381 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14382 | |
883fd55a | 14383 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14384 | |
883fd55a | 14385 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14386 | fp.name = dwarf2_name (die, cu); |
14387 | fp.type = read_type_die (die, cu); | |
98751a41 | 14388 | |
c191a687 KS |
14389 | /* Save accessibility. */ |
14390 | enum dwarf_access_attribute accessibility; | |
14391 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14392 | if (attr != NULL) | |
14393 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14394 | else | |
14395 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14396 | switch (accessibility) | |
14397 | { | |
14398 | case DW_ACCESS_public: | |
14399 | /* The assumed value if neither private nor protected. */ | |
14400 | break; | |
14401 | case DW_ACCESS_private: | |
be2daae6 | 14402 | fp.is_private = 1; |
c191a687 KS |
14403 | break; |
14404 | case DW_ACCESS_protected: | |
be2daae6 | 14405 | fp.is_protected = 1; |
c191a687 KS |
14406 | break; |
14407 | default: | |
b98664d3 | 14408 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14409 | } |
14410 | ||
883fd55a | 14411 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14412 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14413 | else |
be2daae6 | 14414 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14415 | } |
14416 | ||
c906108c SS |
14417 | /* Create the vector of fields, and attach it to the type. */ |
14418 | ||
14419 | static void | |
fba45db2 | 14420 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14421 | struct dwarf2_cu *cu) |
c906108c | 14422 | { |
317f7127 | 14423 | int nfields = fip->nfields (); |
c906108c SS |
14424 | |
14425 | /* Record the field count, allocate space for the array of fields, | |
14426 | and create blank accessibility bitfields if necessary. */ | |
14427 | TYPE_NFIELDS (type) = nfields; | |
14428 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14429 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14430 | |
b4ba55a1 | 14431 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14432 | { |
14433 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14434 | ||
14435 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14436 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14437 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14438 | ||
14439 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14440 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14441 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14442 | ||
774b6a14 TT |
14443 | TYPE_FIELD_IGNORE_BITS (type) = |
14444 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14445 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14446 | } |
14447 | ||
14448 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14449 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14450 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14451 | { |
be2daae6 | 14452 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14453 | unsigned char *pointer; |
c906108c SS |
14454 | |
14455 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14456 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14457 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14458 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14459 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14460 | } |
14461 | ||
2ddeaf8a TT |
14462 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
14463 | { | |
14464 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
14465 | ||
be2daae6 | 14466 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 14467 | { |
be2daae6 TT |
14468 | struct nextfield &field = fip->fields[index]; |
14469 | ||
14470 | if (field.variant.is_discriminant) | |
2ddeaf8a | 14471 | di->discriminant_index = index; |
be2daae6 | 14472 | else if (field.variant.default_branch) |
2ddeaf8a TT |
14473 | di->default_index = index; |
14474 | else | |
be2daae6 | 14475 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
14476 | } |
14477 | } | |
14478 | ||
be2daae6 TT |
14479 | /* Copy the saved-up fields into the field vector. */ |
14480 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14481 | { |
be2daae6 TT |
14482 | struct nextfield &field |
14483 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14484 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14485 | |
be2daae6 TT |
14486 | TYPE_FIELD (type, i) = field.field; |
14487 | switch (field.accessibility) | |
c906108c | 14488 | { |
c5aa993b | 14489 | case DW_ACCESS_private: |
b4ba55a1 | 14490 | if (cu->language != language_ada) |
be2daae6 | 14491 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14492 | break; |
c906108c | 14493 | |
c5aa993b | 14494 | case DW_ACCESS_protected: |
b4ba55a1 | 14495 | if (cu->language != language_ada) |
be2daae6 | 14496 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14497 | break; |
c906108c | 14498 | |
c5aa993b JM |
14499 | case DW_ACCESS_public: |
14500 | break; | |
c906108c | 14501 | |
c5aa993b JM |
14502 | default: |
14503 | /* Unknown accessibility. Complain and treat it as public. */ | |
14504 | { | |
b98664d3 | 14505 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14506 | field.accessibility); |
c5aa993b JM |
14507 | } |
14508 | break; | |
c906108c | 14509 | } |
be2daae6 | 14510 | if (i < fip->baseclasses.size ()) |
c906108c | 14511 | { |
be2daae6 | 14512 | switch (field.virtuality) |
c906108c | 14513 | { |
c5aa993b JM |
14514 | case DW_VIRTUALITY_virtual: |
14515 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14516 | if (cu->language == language_ada) |
a73c6dcd | 14517 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14518 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14519 | break; |
c906108c SS |
14520 | } |
14521 | } | |
c906108c SS |
14522 | } |
14523 | } | |
14524 | ||
7d27a96d TT |
14525 | /* Return true if this member function is a constructor, false |
14526 | otherwise. */ | |
14527 | ||
14528 | static int | |
14529 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14530 | { | |
14531 | const char *fieldname; | |
fe978cb0 | 14532 | const char *type_name; |
7d27a96d TT |
14533 | int len; |
14534 | ||
14535 | if (die->parent == NULL) | |
14536 | return 0; | |
14537 | ||
14538 | if (die->parent->tag != DW_TAG_structure_type | |
14539 | && die->parent->tag != DW_TAG_union_type | |
14540 | && die->parent->tag != DW_TAG_class_type) | |
14541 | return 0; | |
14542 | ||
14543 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14544 | type_name = dwarf2_name (die->parent, cu); |
14545 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14546 | return 0; |
14547 | ||
14548 | len = strlen (fieldname); | |
fe978cb0 PA |
14549 | return (strncmp (fieldname, type_name, len) == 0 |
14550 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14551 | } |
14552 | ||
e35000a7 TBA |
14553 | /* Check if the given VALUE is a recognized enum |
14554 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14555 | Table 7.24. */ | |
14556 | ||
14557 | static bool | |
14558 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14559 | { | |
14560 | switch (value) | |
14561 | { | |
14562 | case DW_DEFAULTED_no: | |
14563 | case DW_DEFAULTED_in_class: | |
14564 | case DW_DEFAULTED_out_of_class: | |
14565 | return true; | |
14566 | } | |
14567 | ||
3142e908 | 14568 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
14569 | return false; |
14570 | } | |
14571 | ||
c906108c SS |
14572 | /* Add a member function to the proper fieldlist. */ |
14573 | ||
14574 | static void | |
107d2387 | 14575 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14576 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 14577 | { |
518817b3 | 14578 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 14579 | struct attribute *attr; |
c906108c | 14580 | int i; |
be2daae6 | 14581 | struct fnfieldlist *flp = nullptr; |
c906108c | 14582 | struct fn_field *fnp; |
15d034d0 | 14583 | const char *fieldname; |
f792889a | 14584 | struct type *this_type; |
60d5a603 | 14585 | enum dwarf_access_attribute accessibility; |
c906108c | 14586 | |
b4ba55a1 | 14587 | if (cu->language == language_ada) |
a73c6dcd | 14588 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 14589 | |
2df3850c | 14590 | /* Get name of member function. */ |
39cbfefa DJ |
14591 | fieldname = dwarf2_name (die, cu); |
14592 | if (fieldname == NULL) | |
2df3850c | 14593 | return; |
c906108c | 14594 | |
c906108c | 14595 | /* Look up member function name in fieldlist. */ |
be2daae6 | 14596 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14597 | { |
27bfe10e | 14598 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
14599 | { |
14600 | flp = &fip->fnfieldlists[i]; | |
14601 | break; | |
14602 | } | |
c906108c SS |
14603 | } |
14604 | ||
be2daae6 TT |
14605 | /* Create a new fnfieldlist if necessary. */ |
14606 | if (flp == nullptr) | |
c906108c | 14607 | { |
be2daae6 TT |
14608 | fip->fnfieldlists.emplace_back (); |
14609 | flp = &fip->fnfieldlists.back (); | |
c906108c | 14610 | flp->name = fieldname; |
be2daae6 | 14611 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
14612 | } |
14613 | ||
be2daae6 TT |
14614 | /* Create a new member function field and add it to the vector of |
14615 | fnfieldlists. */ | |
14616 | flp->fnfields.emplace_back (); | |
14617 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
14618 | |
14619 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 14620 | if (cu->language == language_cplus) |
be2daae6 TT |
14621 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
14622 | die, cu); | |
3da10d80 KS |
14623 | else |
14624 | { | |
1d06ead6 | 14625 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
14626 | fnp->physname = physname ? physname : ""; |
14627 | } | |
14628 | ||
c906108c | 14629 | fnp->type = alloc_type (objfile); |
f792889a DJ |
14630 | this_type = read_type_die (die, cu); |
14631 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 14632 | { |
f792889a | 14633 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 14634 | |
f792889a | 14635 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
14636 | of the method itself (TYPE_CODE_METHOD). */ |
14637 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
14638 | TYPE_TARGET_TYPE (this_type), |
14639 | TYPE_FIELDS (this_type), | |
14640 | TYPE_NFIELDS (this_type), | |
14641 | TYPE_VARARGS (this_type)); | |
c906108c SS |
14642 | |
14643 | /* Handle static member functions. | |
c5aa993b | 14644 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
14645 | member functions. G++ helps GDB by marking the first |
14646 | parameter for non-static member functions (which is the this | |
14647 | pointer) as artificial. We obtain this information from | |
14648 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 14649 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
14650 | fnp->voffset = VOFFSET_STATIC; |
14651 | } | |
14652 | else | |
b98664d3 | 14653 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 14654 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
14655 | |
14656 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 14657 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 14658 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 14659 | |
3e43a32a MS |
14660 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
14661 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
14662 | |
14663 | /* Get accessibility. */ | |
e142c38c | 14664 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14665 | if (attr != nullptr) |
aead7601 | 14666 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
14667 | else |
14668 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14669 | switch (accessibility) | |
c906108c | 14670 | { |
60d5a603 JK |
14671 | case DW_ACCESS_private: |
14672 | fnp->is_private = 1; | |
14673 | break; | |
14674 | case DW_ACCESS_protected: | |
14675 | fnp->is_protected = 1; | |
14676 | break; | |
c906108c SS |
14677 | } |
14678 | ||
b02dede2 | 14679 | /* Check for artificial methods. */ |
e142c38c | 14680 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
14681 | if (attr && DW_UNSND (attr) != 0) |
14682 | fnp->is_artificial = 1; | |
14683 | ||
e35000a7 TBA |
14684 | /* Check for defaulted methods. */ |
14685 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
14686 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
14687 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
14688 | ||
14689 | /* Check for deleted methods. */ | |
14690 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
14691 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
14692 | fnp->is_deleted = 1; | |
14693 | ||
7d27a96d TT |
14694 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
14695 | ||
0d564a31 | 14696 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
14697 | function. For older versions of GCC, this is an offset in the |
14698 | appropriate virtual table, as specified by DW_AT_containing_type. | |
14699 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
14700 | to the object address. */ |
14701 | ||
e142c38c | 14702 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 14703 | if (attr != nullptr) |
8e19ed76 | 14704 | { |
4fc6c0d5 | 14705 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 14706 | { |
aec5aa8b TT |
14707 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
14708 | { | |
14709 | /* Old-style GCC. */ | |
14710 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
14711 | } | |
14712 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
14713 | || (DW_BLOCK (attr)->size > 1 | |
14714 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
14715 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
14716 | { | |
aec5aa8b TT |
14717 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
14718 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
14719 | dwarf2_complex_location_expr_complaint (); | |
14720 | else | |
14721 | fnp->voffset /= cu->header.addr_size; | |
14722 | fnp->voffset += 2; | |
14723 | } | |
14724 | else | |
14725 | dwarf2_complex_location_expr_complaint (); | |
14726 | ||
14727 | if (!fnp->fcontext) | |
7e993ebf KS |
14728 | { |
14729 | /* If there is no `this' field and no DW_AT_containing_type, | |
14730 | we cannot actually find a base class context for the | |
14731 | vtable! */ | |
14732 | if (TYPE_NFIELDS (this_type) == 0 | |
14733 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
14734 | { | |
b98664d3 | 14735 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
14736 | "function \"%s\" (offset %s)"), |
14737 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
14738 | } |
14739 | else | |
14740 | { | |
14741 | fnp->fcontext | |
14742 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
14743 | } | |
14744 | } | |
aec5aa8b | 14745 | } |
cd6c91b4 | 14746 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 14747 | { |
4d3c2250 | 14748 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
14749 | } |
14750 | else | |
14751 | { | |
4d3c2250 KB |
14752 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
14753 | fieldname); | |
8e19ed76 | 14754 | } |
0d564a31 | 14755 | } |
d48cc9dd DJ |
14756 | else |
14757 | { | |
14758 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
14759 | if (attr && DW_UNSND (attr)) | |
14760 | { | |
14761 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 14762 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 14763 | "but the vtable offset is not specified"), |
9d8780f0 | 14764 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 14765 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
14766 | TYPE_CPLUS_DYNAMIC (type) = 1; |
14767 | } | |
14768 | } | |
c906108c SS |
14769 | } |
14770 | ||
14771 | /* Create the vector of member function fields, and attach it to the type. */ | |
14772 | ||
14773 | static void | |
fba45db2 | 14774 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14775 | struct dwarf2_cu *cu) |
c906108c | 14776 | { |
b4ba55a1 | 14777 | if (cu->language == language_ada) |
a73c6dcd | 14778 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 14779 | |
c906108c SS |
14780 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
14781 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
14782 | TYPE_ALLOC (type, |
14783 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 14784 | |
be2daae6 | 14785 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14786 | { |
be2daae6 | 14787 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 14788 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 14789 | |
be2daae6 TT |
14790 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
14791 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 14792 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
14793 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
14794 | ||
14795 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
14796 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
14797 | } |
14798 | ||
be2daae6 | 14799 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
14800 | } |
14801 | ||
1168df01 JB |
14802 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
14803 | language, zero otherwise. */ | |
14804 | static int | |
14805 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
14806 | { | |
14807 | static const char vptr[] = "_vptr"; | |
14808 | ||
9c37b5ae TT |
14809 | /* Look for the C++ form of the vtable. */ |
14810 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
14811 | return 1; |
14812 | ||
14813 | return 0; | |
14814 | } | |
14815 | ||
c0dd20ea | 14816 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
14817 | functions, with the ABI-specified layout. If TYPE describes |
14818 | such a structure, smash it into a member function type. | |
61049d3b DJ |
14819 | |
14820 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
14821 | This is GCC PR debug/28767. */ | |
c0dd20ea | 14822 | |
0b92b5bb TT |
14823 | static void |
14824 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 14825 | { |
09e2d7c7 | 14826 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
14827 | |
14828 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
14829 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
14830 | return; | |
c0dd20ea DJ |
14831 | |
14832 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
14833 | if (TYPE_FIELD_NAME (type, 0) == NULL |
14834 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
14835 | || TYPE_FIELD_NAME (type, 1) == NULL | |
14836 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
14837 | return; | |
c0dd20ea DJ |
14838 | |
14839 | /* Find the type of the method. */ | |
0b92b5bb | 14840 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
14841 | if (pfn_type == NULL |
14842 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
14843 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 14844 | return; |
c0dd20ea DJ |
14845 | |
14846 | /* Look for the "this" argument. */ | |
14847 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
14848 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 14849 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 14850 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 14851 | return; |
c0dd20ea | 14852 | |
09e2d7c7 | 14853 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 14854 | new_type = alloc_type (objfile); |
09e2d7c7 | 14855 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
14856 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
14857 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 14858 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 14859 | } |
1168df01 | 14860 | |
2b4424c3 TT |
14861 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
14862 | appropriate error checking and issuing complaints if there is a | |
14863 | problem. */ | |
14864 | ||
14865 | static ULONGEST | |
14866 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
14867 | { | |
14868 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
14869 | ||
14870 | if (attr == nullptr) | |
14871 | return 0; | |
14872 | ||
cd6c91b4 | 14873 | if (!attr->form_is_constant ()) |
2b4424c3 | 14874 | { |
b98664d3 | 14875 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
14876 | " - DIE at %s [in module %s]"), |
14877 | sect_offset_str (die->sect_off), | |
14878 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14879 | return 0; | |
14880 | } | |
14881 | ||
14882 | ULONGEST align; | |
14883 | if (attr->form == DW_FORM_sdata) | |
14884 | { | |
14885 | LONGEST val = DW_SND (attr); | |
14886 | if (val < 0) | |
14887 | { | |
b98664d3 | 14888 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
14889 | " - DIE at %s [in module %s]"), |
14890 | sect_offset_str (die->sect_off), | |
14891 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14892 | return 0; | |
14893 | } | |
14894 | align = val; | |
14895 | } | |
14896 | else | |
14897 | align = DW_UNSND (attr); | |
14898 | ||
14899 | if (align == 0) | |
14900 | { | |
b98664d3 | 14901 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
14902 | " - DIE at %s [in module %s]"), |
14903 | sect_offset_str (die->sect_off), | |
14904 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14905 | return 0; | |
14906 | } | |
14907 | if ((align & (align - 1)) != 0) | |
14908 | { | |
b98664d3 | 14909 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
14910 | " - DIE at %s [in module %s]"), |
14911 | sect_offset_str (die->sect_off), | |
14912 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14913 | return 0; | |
14914 | } | |
14915 | ||
14916 | return align; | |
14917 | } | |
14918 | ||
14919 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
14920 | the alignment for TYPE. */ | |
14921 | ||
14922 | static void | |
14923 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
14924 | struct type *type) | |
14925 | { | |
14926 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 14927 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
14928 | " - DIE at %s [in module %s]"), |
14929 | sect_offset_str (die->sect_off), | |
14930 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14931 | } | |
685b1105 | 14932 | |
e35000a7 TBA |
14933 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14934 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
14935 | ||
14936 | static bool | |
14937 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
14938 | { | |
14939 | switch (value) | |
14940 | { | |
14941 | case DW_CC_normal: | |
14942 | case DW_CC_pass_by_reference: | |
14943 | case DW_CC_pass_by_value: | |
14944 | return true; | |
14945 | ||
14946 | default: | |
14947 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14948 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
14949 | return false; |
14950 | } | |
14951 | } | |
14952 | ||
d0922fcf TBA |
14953 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14954 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
14955 | also according to GNU-specific values (see include/dwarf2.h). */ | |
14956 | ||
14957 | static bool | |
14958 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
14959 | { | |
14960 | switch (value) | |
14961 | { | |
14962 | case DW_CC_normal: | |
14963 | case DW_CC_program: | |
14964 | case DW_CC_nocall: | |
14965 | return true; | |
14966 | ||
14967 | case DW_CC_GNU_renesas_sh: | |
14968 | case DW_CC_GNU_borland_fastcall_i386: | |
14969 | case DW_CC_GDB_IBM_OpenCL: | |
14970 | return true; | |
14971 | ||
14972 | default: | |
14973 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14974 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
14975 | return false; |
14976 | } | |
14977 | } | |
14978 | ||
c906108c | 14979 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
14980 | (definition) to create a type for the structure or union. Fill in |
14981 | the type's name and general properties; the members will not be | |
83655187 DE |
14982 | processed until process_structure_scope. A symbol table entry for |
14983 | the type will also not be done until process_structure_scope (assuming | |
14984 | the type has a name). | |
c906108c | 14985 | |
c767944b DJ |
14986 | NOTE: we need to call these functions regardless of whether or not the |
14987 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 14988 | structure or union. This gets the type entered into our set of |
83655187 | 14989 | user defined types. */ |
c906108c | 14990 | |
f792889a | 14991 | static struct type * |
134d01f1 | 14992 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14993 | { |
518817b3 | 14994 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
14995 | struct type *type; |
14996 | struct attribute *attr; | |
15d034d0 | 14997 | const char *name; |
c906108c | 14998 | |
348e048f DE |
14999 | /* If the definition of this type lives in .debug_types, read that type. |
15000 | Don't follow DW_AT_specification though, that will take us back up | |
15001 | the chain and we want to go down. */ | |
052c8bb8 | 15002 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15003 | if (attr != nullptr) |
348e048f | 15004 | { |
ac9ec31b | 15005 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15006 | |
ac9ec31b | 15007 | /* The type's CU may not be the same as CU. |
02142a6c | 15008 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15009 | return set_die_type (die, type, cu); |
15010 | } | |
15011 | ||
c0dd20ea | 15012 | type = alloc_type (objfile); |
c906108c | 15013 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15014 | |
39cbfefa DJ |
15015 | name = dwarf2_name (die, cu); |
15016 | if (name != NULL) | |
c906108c | 15017 | { |
987504bb | 15018 | if (cu->language == language_cplus |
c44af4eb TT |
15019 | || cu->language == language_d |
15020 | || cu->language == language_rust) | |
63d06c5c | 15021 | { |
15d034d0 | 15022 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15023 | |
15024 | /* dwarf2_full_name might have already finished building the DIE's | |
15025 | type. If so, there is no need to continue. */ | |
15026 | if (get_die_type (die, cu) != NULL) | |
15027 | return get_die_type (die, cu); | |
15028 | ||
e86ca25f | 15029 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15030 | } |
15031 | else | |
15032 | { | |
d8151005 DJ |
15033 | /* The name is already allocated along with this objfile, so |
15034 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15035 | TYPE_NAME (type) = name; |
63d06c5c | 15036 | } |
c906108c SS |
15037 | } |
15038 | ||
15039 | if (die->tag == DW_TAG_structure_type) | |
15040 | { | |
15041 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15042 | } | |
15043 | else if (die->tag == DW_TAG_union_type) | |
15044 | { | |
15045 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15046 | } | |
2ddeaf8a TT |
15047 | else if (die->tag == DW_TAG_variant_part) |
15048 | { | |
15049 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15050 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15051 | } | |
c906108c SS |
15052 | else |
15053 | { | |
4753d33b | 15054 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15055 | } |
15056 | ||
0cc2414c TT |
15057 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15058 | TYPE_DECLARED_CLASS (type) = 1; | |
15059 | ||
e35000a7 TBA |
15060 | /* Store the calling convention in the type if it's available in |
15061 | the die. Otherwise the calling convention remains set to | |
15062 | the default value DW_CC_normal. */ | |
15063 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15064 | if (attr != nullptr | |
15065 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15066 | { | |
15067 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15068 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15069 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15070 | } | |
15071 | ||
e142c38c | 15072 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15073 | if (attr != nullptr) |
c906108c | 15074 | { |
cd6c91b4 | 15075 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15076 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15077 | else | |
15078 | { | |
15079 | /* For the moment, dynamic type sizes are not supported | |
15080 | by GDB's struct type. The actual size is determined | |
15081 | on-demand when resolving the type of a given object, | |
15082 | so set the type's length to zero for now. Otherwise, | |
15083 | we record an expression as the length, and that expression | |
15084 | could lead to a very large value, which could eventually | |
15085 | lead to us trying to allocate that much memory when creating | |
15086 | a value of that type. */ | |
15087 | TYPE_LENGTH (type) = 0; | |
15088 | } | |
c906108c SS |
15089 | } |
15090 | else | |
15091 | { | |
15092 | TYPE_LENGTH (type) = 0; | |
15093 | } | |
15094 | ||
2b4424c3 TT |
15095 | maybe_set_alignment (cu, die, type); |
15096 | ||
5230b05a | 15097 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15098 | { |
5230b05a WT |
15099 | /* ICC<14 does not output the required DW_AT_declaration on |
15100 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15101 | TYPE_STUB (type) = 1; |
685b1105 JK |
15102 | } |
15103 | else | |
15104 | TYPE_STUB_SUPPORTED (type) = 1; | |
15105 | ||
dc718098 | 15106 | if (die_is_declaration (die, cu)) |
876cecd0 | 15107 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15108 | else if (attr == NULL && die->child == NULL |
15109 | && producer_is_realview (cu->producer)) | |
15110 | /* RealView does not output the required DW_AT_declaration | |
15111 | on incomplete types. */ | |
15112 | TYPE_STUB (type) = 1; | |
dc718098 | 15113 | |
c906108c SS |
15114 | /* We need to add the type field to the die immediately so we don't |
15115 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15116 | type within the structure itself. */ |
1c379e20 | 15117 | set_die_type (die, type, cu); |
c906108c | 15118 | |
7e314c57 JK |
15119 | /* set_die_type should be already done. */ |
15120 | set_descriptive_type (type, die, cu); | |
15121 | ||
c767944b DJ |
15122 | return type; |
15123 | } | |
15124 | ||
2ddeaf8a TT |
15125 | /* A helper for process_structure_scope that handles a single member |
15126 | DIE. */ | |
15127 | ||
15128 | static void | |
15129 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15130 | struct field_info *fi, | |
15131 | std::vector<struct symbol *> *template_args, | |
15132 | struct dwarf2_cu *cu) | |
15133 | { | |
15134 | if (child_die->tag == DW_TAG_member | |
15135 | || child_die->tag == DW_TAG_variable | |
15136 | || child_die->tag == DW_TAG_variant_part) | |
15137 | { | |
15138 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15139 | should be a DW_TAG_member that is a declaration, but | |
15140 | all versions of G++ as of this writing (so through at | |
15141 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15142 | tags for them instead. */ | |
15143 | dwarf2_add_field (fi, child_die, cu); | |
15144 | } | |
15145 | else if (child_die->tag == DW_TAG_subprogram) | |
15146 | { | |
15147 | /* Rust doesn't have member functions in the C++ sense. | |
15148 | However, it does emit ordinary functions as children | |
15149 | of a struct DIE. */ | |
15150 | if (cu->language == language_rust) | |
15151 | read_func_scope (child_die, cu); | |
15152 | else | |
15153 | { | |
15154 | /* C++ member function. */ | |
15155 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15156 | } | |
15157 | } | |
15158 | else if (child_die->tag == DW_TAG_inheritance) | |
15159 | { | |
15160 | /* C++ base class field. */ | |
15161 | dwarf2_add_field (fi, child_die, cu); | |
15162 | } | |
15163 | else if (type_can_define_types (child_die)) | |
15164 | dwarf2_add_type_defn (fi, child_die, cu); | |
15165 | else if (child_die->tag == DW_TAG_template_type_param | |
15166 | || child_die->tag == DW_TAG_template_value_param) | |
15167 | { | |
15168 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15169 | ||
15170 | if (arg != NULL) | |
15171 | template_args->push_back (arg); | |
15172 | } | |
15173 | else if (child_die->tag == DW_TAG_variant) | |
15174 | { | |
15175 | /* In a variant we want to get the discriminant and also add a | |
15176 | field for our sole member child. */ | |
15177 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15178 | ||
bde09ab7 | 15179 | for (die_info *variant_child = child_die->child; |
2ddeaf8a | 15180 | variant_child != NULL; |
436c571c | 15181 | variant_child = variant_child->sibling) |
2ddeaf8a TT |
15182 | { |
15183 | if (variant_child->tag == DW_TAG_member) | |
15184 | { | |
15185 | handle_struct_member_die (variant_child, type, fi, | |
15186 | template_args, cu); | |
15187 | /* Only handle the one. */ | |
15188 | break; | |
15189 | } | |
15190 | } | |
15191 | ||
15192 | /* We don't handle this but we might as well report it if we see | |
15193 | it. */ | |
15194 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15195 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15196 | " - DIE at %s [in module %s]"), |
15197 | sect_offset_str (child_die->sect_off), | |
15198 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15199 | ||
15200 | /* The first field was just added, so we can stash the | |
15201 | discriminant there. */ | |
be2daae6 | 15202 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15203 | if (discr == NULL) |
be2daae6 | 15204 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15205 | else |
be2daae6 | 15206 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15207 | } |
15208 | } | |
15209 | ||
c767944b DJ |
15210 | /* Finish creating a structure or union type, including filling in |
15211 | its members and creating a symbol for it. */ | |
15212 | ||
15213 | static void | |
15214 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15215 | { | |
518817b3 | 15216 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15217 | struct die_info *child_die; |
c767944b DJ |
15218 | struct type *type; |
15219 | ||
15220 | type = get_die_type (die, cu); | |
15221 | if (type == NULL) | |
15222 | type = read_structure_type (die, cu); | |
15223 | ||
2ddeaf8a TT |
15224 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15225 | read the discriminant member, so we can record it later in the | |
15226 | discriminant_info. */ | |
15227 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 15228 | sect_offset discr_offset {}; |
3e1d3d8c | 15229 | bool has_template_parameters = false; |
2ddeaf8a TT |
15230 | |
15231 | if (is_variant_part) | |
15232 | { | |
15233 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15234 | if (discr == NULL) | |
15235 | { | |
15236 | /* Maybe it's a univariant form, an extension we support. | |
15237 | In this case arrange not to check the offset. */ | |
15238 | is_variant_part = false; | |
15239 | } | |
cd6c91b4 | 15240 | else if (discr->form_is_ref ()) |
2ddeaf8a TT |
15241 | { |
15242 | struct dwarf2_cu *target_cu = cu; | |
15243 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15244 | ||
15245 | discr_offset = target_die->sect_off; | |
15246 | } | |
15247 | else | |
15248 | { | |
b98664d3 | 15249 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15250 | " - DIE at %s [in module %s]"), |
15251 | sect_offset_str (die->sect_off), | |
15252 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15253 | is_variant_part = false; | |
15254 | } | |
15255 | } | |
15256 | ||
e142c38c | 15257 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15258 | { |
15259 | struct field_info fi; | |
2f4732b0 | 15260 | std::vector<struct symbol *> template_args; |
c906108c | 15261 | |
639d11d3 | 15262 | child_die = die->child; |
c906108c SS |
15263 | |
15264 | while (child_die && child_die->tag) | |
15265 | { | |
2ddeaf8a | 15266 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15267 | |
2ddeaf8a | 15268 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15269 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15270 | |
436c571c | 15271 | child_die = child_die->sibling; |
c906108c SS |
15272 | } |
15273 | ||
34eaf542 | 15274 | /* Attach template arguments to type. */ |
2f4732b0 | 15275 | if (!template_args.empty ()) |
34eaf542 | 15276 | { |
3e1d3d8c | 15277 | has_template_parameters = true; |
34eaf542 | 15278 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15279 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15280 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15281 | = XOBNEWVEC (&objfile->objfile_obstack, |
15282 | struct symbol *, | |
15283 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15284 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15285 | template_args.data (), |
34eaf542 TT |
15286 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15287 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15288 | } |
15289 | ||
c906108c | 15290 | /* Attach fields and member functions to the type. */ |
317f7127 | 15291 | if (fi.nfields () > 0) |
e7c27a73 | 15292 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15293 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15294 | { |
e7c27a73 | 15295 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15296 | |
c5aa993b | 15297 | /* Get the type which refers to the base class (possibly this |
c906108c | 15298 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15299 | class from the DW_AT_containing_type attribute. This use of |
15300 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15301 | |
e142c38c | 15302 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15303 | { |
e7c27a73 | 15304 | struct type *t = die_containing_type (die, cu); |
c906108c | 15305 | |
ae6ae975 | 15306 | set_type_vptr_basetype (type, t); |
c906108c SS |
15307 | if (type == t) |
15308 | { | |
c906108c SS |
15309 | int i; |
15310 | ||
15311 | /* Our own class provides vtbl ptr. */ | |
15312 | for (i = TYPE_NFIELDS (t) - 1; | |
15313 | i >= TYPE_N_BASECLASSES (t); | |
15314 | --i) | |
15315 | { | |
0d5cff50 | 15316 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15317 | |
1168df01 | 15318 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15319 | { |
ae6ae975 | 15320 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15321 | break; |
15322 | } | |
15323 | } | |
15324 | ||
15325 | /* Complain if virtual function table field not found. */ | |
15326 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15327 | complaint (_("virtual function table pointer " |
3e43a32a | 15328 | "not found when defining class '%s'"), |
e86ca25f | 15329 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15330 | } |
15331 | else | |
15332 | { | |
ae6ae975 | 15333 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15334 | } |
15335 | } | |
f6235d4c | 15336 | else if (cu->producer |
61012eef | 15337 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15338 | { |
15339 | /* The IBM XLC compiler does not provide direct indication | |
15340 | of the containing type, but the vtable pointer is | |
15341 | always named __vfp. */ | |
15342 | ||
15343 | int i; | |
15344 | ||
15345 | for (i = TYPE_NFIELDS (type) - 1; | |
15346 | i >= TYPE_N_BASECLASSES (type); | |
15347 | --i) | |
15348 | { | |
15349 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15350 | { | |
ae6ae975 DE |
15351 | set_type_vptr_fieldno (type, i); |
15352 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15353 | break; |
15354 | } | |
15355 | } | |
15356 | } | |
c906108c | 15357 | } |
98751a41 JK |
15358 | |
15359 | /* Copy fi.typedef_field_list linked list elements content into the | |
15360 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15361 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15362 | { |
be2daae6 | 15363 | int count = fi.typedef_field_list.size (); |
98751a41 | 15364 | |
a0d7a4ff | 15365 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15366 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15367 | = ((struct decl_field *) |
be2daae6 TT |
15368 | TYPE_ALLOC (type, |
15369 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15370 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15371 | |
be2daae6 TT |
15372 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15373 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15374 | } |
c767944b | 15375 | |
883fd55a KS |
15376 | /* Copy fi.nested_types_list linked list elements content into the |
15377 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15378 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15379 | { |
be2daae6 | 15380 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15381 | |
15382 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15383 | TYPE_NESTED_TYPES_ARRAY (type) | |
15384 | = ((struct decl_field *) | |
be2daae6 TT |
15385 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15386 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15387 | |
be2daae6 TT |
15388 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15389 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15390 | } |
c906108c | 15391 | } |
63d06c5c | 15392 | |
bb5ed363 | 15393 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15394 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15395 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15396 | |
90aeadfc DC |
15397 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15398 | snapshots) has been known to create a die giving a declaration | |
15399 | for a class that has, as a child, a die giving a definition for a | |
15400 | nested class. So we have to process our children even if the | |
15401 | current die is a declaration. Normally, of course, a declaration | |
15402 | won't have any children at all. */ | |
134d01f1 | 15403 | |
ca040673 DE |
15404 | child_die = die->child; |
15405 | ||
90aeadfc DC |
15406 | while (child_die != NULL && child_die->tag) |
15407 | { | |
15408 | if (child_die->tag == DW_TAG_member | |
15409 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15410 | || child_die->tag == DW_TAG_inheritance |
15411 | || child_die->tag == DW_TAG_template_value_param | |
15412 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15413 | { |
90aeadfc | 15414 | /* Do nothing. */ |
134d01f1 | 15415 | } |
90aeadfc DC |
15416 | else |
15417 | process_die (child_die, cu); | |
134d01f1 | 15418 | |
436c571c | 15419 | child_die = child_die->sibling; |
134d01f1 DJ |
15420 | } |
15421 | ||
fa4028e9 JB |
15422 | /* Do not consider external references. According to the DWARF standard, |
15423 | these DIEs are identified by the fact that they have no byte_size | |
15424 | attribute, and a declaration attribute. */ | |
15425 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15426 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15427 | { |
15428 | struct symbol *sym = new_symbol (die, type, cu); | |
15429 | ||
15430 | if (has_template_parameters) | |
15431 | { | |
a776957c TT |
15432 | struct symtab *symtab; |
15433 | if (sym != nullptr) | |
15434 | symtab = symbol_symtab (sym); | |
15435 | else if (cu->line_header != nullptr) | |
15436 | { | |
15437 | /* Any related symtab will do. */ | |
15438 | symtab | |
7ba99d21 | 15439 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15440 | } |
15441 | else | |
15442 | { | |
15443 | symtab = nullptr; | |
15444 | complaint (_("could not find suitable " | |
15445 | "symtab for template parameter" | |
15446 | " - DIE at %s [in module %s]"), | |
15447 | sect_offset_str (die->sect_off), | |
15448 | objfile_name (objfile)); | |
15449 | } | |
15450 | ||
15451 | if (symtab != nullptr) | |
15452 | { | |
15453 | /* Make sure that the symtab is set on the new symbols. | |
15454 | Even though they don't appear in this symtab directly, | |
15455 | other parts of gdb assume that symbols do, and this is | |
15456 | reasonably true. */ | |
15457 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15458 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15459 | } | |
3e1d3d8c TT |
15460 | } |
15461 | } | |
134d01f1 DJ |
15462 | } |
15463 | ||
55426c9d JB |
15464 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15465 | update TYPE using some information only available in DIE's children. */ | |
15466 | ||
15467 | static void | |
15468 | update_enumeration_type_from_children (struct die_info *die, | |
15469 | struct type *type, | |
15470 | struct dwarf2_cu *cu) | |
15471 | { | |
60f7655a | 15472 | struct die_info *child_die; |
55426c9d JB |
15473 | int unsigned_enum = 1; |
15474 | int flag_enum = 1; | |
55426c9d | 15475 | |
8268c778 | 15476 | auto_obstack obstack; |
55426c9d | 15477 | |
60f7655a DE |
15478 | for (child_die = die->child; |
15479 | child_die != NULL && child_die->tag; | |
436c571c | 15480 | child_die = child_die->sibling) |
55426c9d JB |
15481 | { |
15482 | struct attribute *attr; | |
15483 | LONGEST value; | |
15484 | const gdb_byte *bytes; | |
15485 | struct dwarf2_locexpr_baton *baton; | |
15486 | const char *name; | |
60f7655a | 15487 | |
55426c9d JB |
15488 | if (child_die->tag != DW_TAG_enumerator) |
15489 | continue; | |
15490 | ||
15491 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15492 | if (attr == NULL) | |
15493 | continue; | |
15494 | ||
15495 | name = dwarf2_name (child_die, cu); | |
15496 | if (name == NULL) | |
15497 | name = "<anonymous enumerator>"; | |
15498 | ||
15499 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15500 | &value, &bytes, &baton); | |
15501 | if (value < 0) | |
15502 | { | |
15503 | unsigned_enum = 0; | |
15504 | flag_enum = 0; | |
15505 | } | |
55426c9d | 15506 | else |
edd45eb0 SM |
15507 | { |
15508 | if (count_one_bits_ll (value) >= 2) | |
15509 | flag_enum = 0; | |
edd45eb0 | 15510 | } |
55426c9d JB |
15511 | |
15512 | /* If we already know that the enum type is neither unsigned, nor | |
15513 | a flag type, no need to look at the rest of the enumerates. */ | |
15514 | if (!unsigned_enum && !flag_enum) | |
15515 | break; | |
55426c9d JB |
15516 | } |
15517 | ||
15518 | if (unsigned_enum) | |
15519 | TYPE_UNSIGNED (type) = 1; | |
15520 | if (flag_enum) | |
15521 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15522 | } |
15523 | ||
134d01f1 DJ |
15524 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15525 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15526 | |
f792889a | 15527 | static struct type * |
134d01f1 | 15528 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15529 | { |
518817b3 | 15530 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15531 | struct type *type; |
c906108c | 15532 | struct attribute *attr; |
0114d602 | 15533 | const char *name; |
134d01f1 | 15534 | |
348e048f DE |
15535 | /* If the definition of this type lives in .debug_types, read that type. |
15536 | Don't follow DW_AT_specification though, that will take us back up | |
15537 | the chain and we want to go down. */ | |
052c8bb8 | 15538 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15539 | if (attr != nullptr) |
348e048f | 15540 | { |
ac9ec31b | 15541 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15542 | |
ac9ec31b | 15543 | /* The type's CU may not be the same as CU. |
02142a6c | 15544 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15545 | return set_die_type (die, type, cu); |
15546 | } | |
15547 | ||
c906108c SS |
15548 | type = alloc_type (objfile); |
15549 | ||
15550 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 15551 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 15552 | if (name != NULL) |
e86ca25f | 15553 | TYPE_NAME (type) = name; |
c906108c | 15554 | |
0626fc76 TT |
15555 | attr = dwarf2_attr (die, DW_AT_type, cu); |
15556 | if (attr != NULL) | |
15557 | { | |
15558 | struct type *underlying_type = die_type (die, cu); | |
15559 | ||
15560 | TYPE_TARGET_TYPE (type) = underlying_type; | |
15561 | } | |
15562 | ||
e142c38c | 15563 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15564 | if (attr != nullptr) |
c906108c SS |
15565 | { |
15566 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15567 | } | |
15568 | else | |
15569 | { | |
15570 | TYPE_LENGTH (type) = 0; | |
15571 | } | |
15572 | ||
2b4424c3 TT |
15573 | maybe_set_alignment (cu, die, type); |
15574 | ||
137033e9 JB |
15575 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
15576 | declared as private in the package spec, and then defined only | |
15577 | inside the package body. Such types are known as Taft Amendment | |
15578 | Types. When another package uses such a type, an incomplete DIE | |
15579 | may be generated by the compiler. */ | |
02eb380e | 15580 | if (die_is_declaration (die, cu)) |
876cecd0 | 15581 | TYPE_STUB (type) = 1; |
02eb380e | 15582 | |
0626fc76 TT |
15583 | /* Finish the creation of this type by using the enum's children. |
15584 | We must call this even when the underlying type has been provided | |
15585 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
15586 | update_enumeration_type_from_children (die, type, cu); |
15587 | ||
0626fc76 TT |
15588 | /* If this type has an underlying type that is not a stub, then we |
15589 | may use its attributes. We always use the "unsigned" attribute | |
15590 | in this situation, because ordinarily we guess whether the type | |
15591 | is unsigned -- but the guess can be wrong and the underlying type | |
15592 | can tell us the reality. However, we defer to a local size | |
15593 | attribute if one exists, because this lets the compiler override | |
15594 | the underlying type if needed. */ | |
15595 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
15596 | { | |
9e7c9a03 HD |
15597 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
15598 | underlying_type = check_typedef (underlying_type); | |
15599 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 15600 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 15601 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 15602 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
15603 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
15604 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
15605 | } |
15606 | ||
3d567982 TT |
15607 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
15608 | ||
f792889a | 15609 | return set_die_type (die, type, cu); |
134d01f1 DJ |
15610 | } |
15611 | ||
15612 | /* Given a pointer to a die which begins an enumeration, process all | |
15613 | the dies that define the members of the enumeration, and create the | |
15614 | symbol for the enumeration type. | |
15615 | ||
15616 | NOTE: We reverse the order of the element list. */ | |
15617 | ||
15618 | static void | |
15619 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15620 | { | |
f792889a | 15621 | struct type *this_type; |
134d01f1 | 15622 | |
f792889a DJ |
15623 | this_type = get_die_type (die, cu); |
15624 | if (this_type == NULL) | |
15625 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 15626 | |
639d11d3 | 15627 | if (die->child != NULL) |
c906108c | 15628 | { |
9dc481d3 DE |
15629 | struct die_info *child_die; |
15630 | struct symbol *sym; | |
43816ebc | 15631 | std::vector<struct field> fields; |
15d034d0 | 15632 | const char *name; |
9dc481d3 | 15633 | |
639d11d3 | 15634 | child_die = die->child; |
c906108c SS |
15635 | while (child_die && child_die->tag) |
15636 | { | |
15637 | if (child_die->tag != DW_TAG_enumerator) | |
15638 | { | |
e7c27a73 | 15639 | process_die (child_die, cu); |
c906108c SS |
15640 | } |
15641 | else | |
15642 | { | |
39cbfefa DJ |
15643 | name = dwarf2_name (child_die, cu); |
15644 | if (name) | |
c906108c | 15645 | { |
f792889a | 15646 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 15647 | |
43816ebc TT |
15648 | fields.emplace_back (); |
15649 | struct field &field = fields.back (); | |
c906108c | 15650 | |
43816ebc TT |
15651 | FIELD_NAME (field) = sym->linkage_name (); |
15652 | FIELD_TYPE (field) = NULL; | |
15653 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
15654 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
15655 | } |
15656 | } | |
15657 | ||
436c571c | 15658 | child_die = child_die->sibling; |
c906108c SS |
15659 | } |
15660 | ||
43816ebc | 15661 | if (!fields.empty ()) |
c906108c | 15662 | { |
43816ebc | 15663 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 15664 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
15665 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
15666 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
15667 | sizeof (struct field) * fields.size ()); | |
c906108c | 15668 | } |
c906108c | 15669 | } |
134d01f1 | 15670 | |
6c83ed52 TT |
15671 | /* If we are reading an enum from a .debug_types unit, and the enum |
15672 | is a declaration, and the enum is not the signatured type in the | |
15673 | unit, then we do not want to add a symbol for it. Adding a | |
15674 | symbol would in some cases obscure the true definition of the | |
15675 | enum, giving users an incomplete type when the definition is | |
15676 | actually available. Note that we do not want to do this for all | |
15677 | enums which are just declarations, because C++0x allows forward | |
15678 | enum declarations. */ | |
3019eac3 | 15679 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
15680 | && die_is_declaration (die, cu)) |
15681 | { | |
52dc124a | 15682 | struct signatured_type *sig_type; |
6c83ed52 | 15683 | |
c0f78cd4 | 15684 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
15685 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
15686 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
15687 | return; |
15688 | } | |
15689 | ||
f792889a | 15690 | new_symbol (die, this_type, cu); |
c906108c SS |
15691 | } |
15692 | ||
15693 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
15694 | the DIE's type field. For now, this only handles one dimensional | |
15695 | arrays. */ | |
15696 | ||
f792889a | 15697 | static struct type * |
e7c27a73 | 15698 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15699 | { |
518817b3 | 15700 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15701 | struct die_info *child_die; |
7e314c57 | 15702 | struct type *type; |
c906108c | 15703 | struct type *element_type, *range_type, *index_type; |
c906108c | 15704 | struct attribute *attr; |
15d034d0 | 15705 | const char *name; |
a405673c | 15706 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 15707 | unsigned int bit_stride = 0; |
c906108c | 15708 | |
e7c27a73 | 15709 | element_type = die_type (die, cu); |
c906108c | 15710 | |
7e314c57 JK |
15711 | /* The die_type call above may have already set the type for this DIE. */ |
15712 | type = get_die_type (die, cu); | |
15713 | if (type) | |
15714 | return type; | |
15715 | ||
dc53a7ad JB |
15716 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
15717 | if (attr != NULL) | |
a405673c JB |
15718 | { |
15719 | int stride_ok; | |
09ba997f | 15720 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
a405673c JB |
15721 | |
15722 | byte_stride_prop | |
15723 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
15724 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
15725 | prop_type); | |
a405673c JB |
15726 | if (!stride_ok) |
15727 | { | |
b98664d3 | 15728 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
15729 | " - DIE at %s [in module %s]"), |
15730 | sect_offset_str (die->sect_off), | |
518817b3 | 15731 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
15732 | /* Ignore this attribute. We will likely not be able to print |
15733 | arrays of this type correctly, but there is little we can do | |
15734 | to help if we cannot read the attribute's value. */ | |
15735 | byte_stride_prop = NULL; | |
15736 | } | |
15737 | } | |
dc53a7ad JB |
15738 | |
15739 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
15740 | if (attr != NULL) | |
15741 | bit_stride = DW_UNSND (attr); | |
15742 | ||
c906108c SS |
15743 | /* Irix 6.2 native cc creates array types without children for |
15744 | arrays with unspecified length. */ | |
639d11d3 | 15745 | if (die->child == NULL) |
c906108c | 15746 | { |
46bf5051 | 15747 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 15748 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 15749 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 15750 | byte_stride_prop, bit_stride); |
f792889a | 15751 | return set_die_type (die, type, cu); |
c906108c SS |
15752 | } |
15753 | ||
791afaa2 | 15754 | std::vector<struct type *> range_types; |
639d11d3 | 15755 | child_die = die->child; |
c906108c SS |
15756 | while (child_die && child_die->tag) |
15757 | { | |
15758 | if (child_die->tag == DW_TAG_subrange_type) | |
15759 | { | |
f792889a | 15760 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 15761 | |
f792889a | 15762 | if (child_type != NULL) |
a02abb62 | 15763 | { |
0963b4bd MS |
15764 | /* The range type was succesfully read. Save it for the |
15765 | array type creation. */ | |
791afaa2 | 15766 | range_types.push_back (child_type); |
a02abb62 | 15767 | } |
c906108c | 15768 | } |
436c571c | 15769 | child_die = child_die->sibling; |
c906108c SS |
15770 | } |
15771 | ||
15772 | /* Dwarf2 dimensions are output from left to right, create the | |
15773 | necessary array types in backwards order. */ | |
7ca2d3a3 | 15774 | |
c906108c | 15775 | type = element_type; |
7ca2d3a3 DL |
15776 | |
15777 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
15778 | { | |
15779 | int i = 0; | |
9a619af0 | 15780 | |
791afaa2 | 15781 | while (i < range_types.size ()) |
dc53a7ad | 15782 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 15783 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
15784 | } |
15785 | else | |
15786 | { | |
791afaa2 | 15787 | size_t ndim = range_types.size (); |
7ca2d3a3 | 15788 | while (ndim-- > 0) |
dc53a7ad | 15789 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 15790 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 15791 | } |
c906108c | 15792 | |
f5f8a009 EZ |
15793 | /* Understand Dwarf2 support for vector types (like they occur on |
15794 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
15795 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
15796 | custom vendor extension. The main difference between a regular | |
15797 | array and the vector variant is that vectors are passed by value | |
15798 | to functions. */ | |
e142c38c | 15799 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 15800 | if (attr != nullptr) |
ea37ba09 | 15801 | make_vector_type (type); |
f5f8a009 | 15802 | |
dbc98a8b KW |
15803 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
15804 | implementation may choose to implement triple vectors using this | |
15805 | attribute. */ | |
15806 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15807 | if (attr != nullptr) |
dbc98a8b KW |
15808 | { |
15809 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
15810 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15811 | else | |
b98664d3 | 15812 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 15813 | "than the total size of elements")); |
dbc98a8b KW |
15814 | } |
15815 | ||
39cbfefa DJ |
15816 | name = dwarf2_name (die, cu); |
15817 | if (name) | |
15818 | TYPE_NAME (type) = name; | |
6e70227d | 15819 | |
2b4424c3 TT |
15820 | maybe_set_alignment (cu, die, type); |
15821 | ||
0963b4bd | 15822 | /* Install the type in the die. */ |
7e314c57 JK |
15823 | set_die_type (die, type, cu); |
15824 | ||
15825 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15826 | set_descriptive_type (type, die, cu); |
15827 | ||
7e314c57 | 15828 | return type; |
c906108c SS |
15829 | } |
15830 | ||
7ca2d3a3 | 15831 | static enum dwarf_array_dim_ordering |
6e70227d | 15832 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
15833 | { |
15834 | struct attribute *attr; | |
15835 | ||
15836 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
15837 | ||
435d3d88 | 15838 | if (attr != nullptr) |
aead7601 | 15839 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 15840 | |
0963b4bd MS |
15841 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
15842 | opposite order to the dwarf2 specification, but data is still | |
15843 | laid out as per normal fortran. | |
7ca2d3a3 | 15844 | |
0963b4bd MS |
15845 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
15846 | version checking. */ | |
7ca2d3a3 | 15847 | |
905e0470 PM |
15848 | if (cu->language == language_fortran |
15849 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
15850 | { |
15851 | return DW_ORD_row_major; | |
15852 | } | |
15853 | ||
6e70227d | 15854 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
15855 | { |
15856 | case array_column_major: | |
15857 | return DW_ORD_col_major; | |
15858 | case array_row_major: | |
15859 | default: | |
15860 | return DW_ORD_row_major; | |
15861 | }; | |
15862 | } | |
15863 | ||
72019c9c | 15864 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 15865 | the DIE's type field. */ |
72019c9c | 15866 | |
f792889a | 15867 | static struct type * |
72019c9c GM |
15868 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
15869 | { | |
7e314c57 JK |
15870 | struct type *domain_type, *set_type; |
15871 | struct attribute *attr; | |
f792889a | 15872 | |
7e314c57 JK |
15873 | domain_type = die_type (die, cu); |
15874 | ||
15875 | /* The die_type call above may have already set the type for this DIE. */ | |
15876 | set_type = get_die_type (die, cu); | |
15877 | if (set_type) | |
15878 | return set_type; | |
15879 | ||
15880 | set_type = create_set_type (NULL, domain_type); | |
15881 | ||
15882 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15883 | if (attr != nullptr) |
d09039dd | 15884 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 15885 | |
2b4424c3 TT |
15886 | maybe_set_alignment (cu, die, set_type); |
15887 | ||
f792889a | 15888 | return set_die_type (die, set_type, cu); |
72019c9c | 15889 | } |
7ca2d3a3 | 15890 | |
0971de02 TT |
15891 | /* A helper for read_common_block that creates a locexpr baton. |
15892 | SYM is the symbol which we are marking as computed. | |
15893 | COMMON_DIE is the DIE for the common block. | |
15894 | COMMON_LOC is the location expression attribute for the common | |
15895 | block itself. | |
15896 | MEMBER_LOC is the location expression attribute for the particular | |
15897 | member of the common block that we are processing. | |
15898 | CU is the CU from which the above come. */ | |
15899 | ||
15900 | static void | |
15901 | mark_common_block_symbol_computed (struct symbol *sym, | |
15902 | struct die_info *common_die, | |
15903 | struct attribute *common_loc, | |
15904 | struct attribute *member_loc, | |
15905 | struct dwarf2_cu *cu) | |
15906 | { | |
518817b3 SM |
15907 | struct dwarf2_per_objfile *dwarf2_per_objfile |
15908 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
15909 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
15910 | struct dwarf2_locexpr_baton *baton; | |
15911 | gdb_byte *ptr; | |
15912 | unsigned int cu_off; | |
15913 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
15914 | LONGEST offset = 0; | |
15915 | ||
15916 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
15917 | gdb_assert (common_loc->form_is_block ()); |
15918 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 15919 | || member_loc->form_is_constant ()); |
0971de02 | 15920 | |
8d749320 | 15921 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
15922 | baton->per_cu = cu->per_cu; |
15923 | gdb_assert (baton->per_cu); | |
15924 | ||
15925 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
15926 | ||
cd6c91b4 | 15927 | if (member_loc->form_is_constant ()) |
0971de02 | 15928 | { |
0826b30a | 15929 | offset = member_loc->constant_value (0); |
0971de02 TT |
15930 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
15931 | } | |
15932 | else | |
15933 | baton->size += DW_BLOCK (member_loc)->size; | |
15934 | ||
224c3ddb | 15935 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
15936 | baton->data = ptr; |
15937 | ||
15938 | *ptr++ = DW_OP_call4; | |
9c541725 | 15939 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
15940 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
15941 | ptr += 4; | |
15942 | ||
cd6c91b4 | 15943 | if (member_loc->form_is_constant ()) |
0971de02 TT |
15944 | { |
15945 | *ptr++ = DW_OP_addr; | |
15946 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
15947 | ptr += cu->header.addr_size; | |
15948 | } | |
15949 | else | |
15950 | { | |
15951 | /* We have to copy the data here, because DW_OP_call4 will only | |
15952 | use a DW_AT_location attribute. */ | |
15953 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
15954 | ptr += DW_BLOCK (member_loc)->size; | |
15955 | } | |
15956 | ||
15957 | *ptr++ = DW_OP_plus; | |
15958 | gdb_assert (ptr - baton->data == baton->size); | |
15959 | ||
0971de02 | 15960 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 15961 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
15962 | } |
15963 | ||
4357ac6c TT |
15964 | /* Create appropriate locally-scoped variables for all the |
15965 | DW_TAG_common_block entries. Also create a struct common_block | |
15966 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 15967 | is used to separate the common blocks name namespace from regular |
4357ac6c | 15968 | variable names. */ |
c906108c SS |
15969 | |
15970 | static void | |
e7c27a73 | 15971 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15972 | { |
0971de02 TT |
15973 | struct attribute *attr; |
15974 | ||
15975 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 15976 | if (attr != nullptr) |
0971de02 TT |
15977 | { |
15978 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 15979 | if (attr->form_is_block ()) |
0971de02 TT |
15980 | { |
15981 | /* Ok. */ | |
15982 | } | |
cd6c91b4 | 15983 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
15984 | { |
15985 | dwarf2_complex_location_expr_complaint (); | |
15986 | attr = NULL; | |
15987 | } | |
15988 | else | |
15989 | { | |
15990 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15991 | "common block member"); | |
15992 | attr = NULL; | |
15993 | } | |
15994 | } | |
15995 | ||
639d11d3 | 15996 | if (die->child != NULL) |
c906108c | 15997 | { |
518817b3 | 15998 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
15999 | struct die_info *child_die; |
16000 | size_t n_entries = 0, size; | |
16001 | struct common_block *common_block; | |
16002 | struct symbol *sym; | |
74ac6d43 | 16003 | |
4357ac6c TT |
16004 | for (child_die = die->child; |
16005 | child_die && child_die->tag; | |
436c571c | 16006 | child_die = child_die->sibling) |
4357ac6c TT |
16007 | ++n_entries; |
16008 | ||
16009 | size = (sizeof (struct common_block) | |
16010 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16011 | common_block |
16012 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16013 | size); | |
4357ac6c TT |
16014 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16015 | common_block->n_entries = 0; | |
16016 | ||
16017 | for (child_die = die->child; | |
16018 | child_die && child_die->tag; | |
436c571c | 16019 | child_die = child_die->sibling) |
4357ac6c TT |
16020 | { |
16021 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16022 | symbol scope. */ | |
e7c27a73 | 16023 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16024 | if (sym != NULL) |
16025 | { | |
16026 | struct attribute *member_loc; | |
16027 | ||
16028 | common_block->contents[common_block->n_entries++] = sym; | |
16029 | ||
16030 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16031 | cu); | |
16032 | if (member_loc) | |
16033 | { | |
16034 | /* GDB has handled this for a long time, but it is | |
16035 | not specified by DWARF. It seems to have been | |
16036 | emitted by gfortran at least as recently as: | |
16037 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16038 | complaint (_("Variable in common block has " |
0971de02 | 16039 | "DW_AT_data_member_location " |
9d8780f0 SM |
16040 | "- DIE at %s [in module %s]"), |
16041 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16042 | objfile_name (objfile)); |
0971de02 | 16043 | |
cd6c91b4 | 16044 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16045 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16046 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16047 | || member_loc->form_is_block ()) |
0971de02 | 16048 | { |
435d3d88 | 16049 | if (attr != nullptr) |
0971de02 TT |
16050 | mark_common_block_symbol_computed (sym, die, attr, |
16051 | member_loc, cu); | |
16052 | } | |
16053 | else | |
16054 | dwarf2_complex_location_expr_complaint (); | |
16055 | } | |
16056 | } | |
c906108c | 16057 | } |
4357ac6c TT |
16058 | |
16059 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16060 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16061 | } |
16062 | } | |
16063 | ||
0114d602 | 16064 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16065 | |
0114d602 DJ |
16066 | static struct type * |
16067 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16068 | { |
518817b3 | 16069 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16070 | const char *previous_prefix, *name; |
9219021c | 16071 | int is_anonymous; |
0114d602 DJ |
16072 | struct type *type; |
16073 | ||
16074 | /* For extensions, reuse the type of the original namespace. */ | |
16075 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16076 | { | |
16077 | struct die_info *ext_die; | |
16078 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16079 | |
0114d602 DJ |
16080 | ext_die = dwarf2_extension (die, &ext_cu); |
16081 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16082 | |
16083 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16084 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16085 | return set_die_type (die, type, cu); |
16086 | } | |
9219021c | 16087 | |
e142c38c | 16088 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16089 | |
16090 | /* Now build the name of the current namespace. */ | |
16091 | ||
0114d602 DJ |
16092 | previous_prefix = determine_prefix (die, cu); |
16093 | if (previous_prefix[0] != '\0') | |
16094 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16095 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16096 | |
16097 | /* Create the type. */ | |
19f392bc | 16098 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16099 | |
60531b24 | 16100 | return set_die_type (die, type, cu); |
0114d602 DJ |
16101 | } |
16102 | ||
22cee43f | 16103 | /* Read a namespace scope. */ |
0114d602 DJ |
16104 | |
16105 | static void | |
16106 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16107 | { | |
518817b3 | 16108 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16109 | int is_anonymous; |
9219021c | 16110 | |
5c4e30ca DC |
16111 | /* Add a symbol associated to this if we haven't seen the namespace |
16112 | before. Also, add a using directive if it's an anonymous | |
16113 | namespace. */ | |
9219021c | 16114 | |
f2f0e013 | 16115 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16116 | { |
16117 | struct type *type; | |
16118 | ||
0114d602 | 16119 | type = read_type_die (die, cu); |
e7c27a73 | 16120 | new_symbol (die, type, cu); |
5c4e30ca | 16121 | |
e8e80198 | 16122 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16123 | if (is_anonymous) |
0114d602 DJ |
16124 | { |
16125 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16126 | |
eb1e02fd | 16127 | std::vector<const char *> excludes; |
804d2729 | 16128 | add_using_directive (using_directives (cu), |
22cee43f | 16129 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16130 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16131 | } |
5c4e30ca | 16132 | } |
9219021c | 16133 | |
639d11d3 | 16134 | if (die->child != NULL) |
d9fa45fe | 16135 | { |
639d11d3 | 16136 | struct die_info *child_die = die->child; |
6e70227d | 16137 | |
d9fa45fe DC |
16138 | while (child_die && child_die->tag) |
16139 | { | |
e7c27a73 | 16140 | process_die (child_die, cu); |
436c571c | 16141 | child_die = child_die->sibling; |
d9fa45fe DC |
16142 | } |
16143 | } | |
38d518c9 EZ |
16144 | } |
16145 | ||
f55ee35c JK |
16146 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16147 | imported module. Still we need that type as local Fortran "use ... only" | |
16148 | declaration imports depend on the created type in determine_prefix. */ | |
16149 | ||
16150 | static struct type * | |
16151 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16152 | { | |
518817b3 | 16153 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16154 | const char *module_name; |
f55ee35c JK |
16155 | struct type *type; |
16156 | ||
16157 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16158 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16159 | |
f55ee35c JK |
16160 | return set_die_type (die, type, cu); |
16161 | } | |
16162 | ||
5d7cb8df JK |
16163 | /* Read a Fortran module. */ |
16164 | ||
16165 | static void | |
16166 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16167 | { | |
16168 | struct die_info *child_die = die->child; | |
530e8392 KB |
16169 | struct type *type; |
16170 | ||
16171 | type = read_type_die (die, cu); | |
16172 | new_symbol (die, type, cu); | |
5d7cb8df | 16173 | |
5d7cb8df JK |
16174 | while (child_die && child_die->tag) |
16175 | { | |
16176 | process_die (child_die, cu); | |
436c571c | 16177 | child_die = child_die->sibling; |
5d7cb8df JK |
16178 | } |
16179 | } | |
16180 | ||
38d518c9 EZ |
16181 | /* Return the name of the namespace represented by DIE. Set |
16182 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16183 | namespace. */ | |
16184 | ||
16185 | static const char * | |
e142c38c | 16186 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16187 | { |
16188 | struct die_info *current_die; | |
16189 | const char *name = NULL; | |
16190 | ||
16191 | /* Loop through the extensions until we find a name. */ | |
16192 | ||
16193 | for (current_die = die; | |
16194 | current_die != NULL; | |
f2f0e013 | 16195 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16196 | { |
96553a0c DE |
16197 | /* We don't use dwarf2_name here so that we can detect the absence |
16198 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16199 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16200 | |
38d518c9 EZ |
16201 | if (name != NULL) |
16202 | break; | |
16203 | } | |
16204 | ||
16205 | /* Is it an anonymous namespace? */ | |
16206 | ||
16207 | *is_anonymous = (name == NULL); | |
16208 | if (*is_anonymous) | |
2b1dbab0 | 16209 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16210 | |
16211 | return name; | |
d9fa45fe DC |
16212 | } |
16213 | ||
c906108c SS |
16214 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16215 | the user defined type vector. */ | |
16216 | ||
f792889a | 16217 | static struct type * |
e7c27a73 | 16218 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16219 | { |
518817b3 SM |
16220 | struct gdbarch *gdbarch |
16221 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16222 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16223 | struct type *type; |
8b2dbe47 KB |
16224 | struct attribute *attr_byte_size; |
16225 | struct attribute *attr_address_class; | |
16226 | int byte_size, addr_class; | |
7e314c57 JK |
16227 | struct type *target_type; |
16228 | ||
16229 | target_type = die_type (die, cu); | |
c906108c | 16230 | |
7e314c57 JK |
16231 | /* The die_type call above may have already set the type for this DIE. */ |
16232 | type = get_die_type (die, cu); | |
16233 | if (type) | |
16234 | return type; | |
16235 | ||
16236 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16237 | |
e142c38c | 16238 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16239 | if (attr_byte_size) |
16240 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16241 | else |
8b2dbe47 KB |
16242 | byte_size = cu_header->addr_size; |
16243 | ||
e142c38c | 16244 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16245 | if (attr_address_class) |
16246 | addr_class = DW_UNSND (attr_address_class); | |
16247 | else | |
16248 | addr_class = DW_ADDR_none; | |
16249 | ||
2b4424c3 TT |
16250 | ULONGEST alignment = get_alignment (cu, die); |
16251 | ||
16252 | /* If the pointer size, alignment, or address class is different | |
16253 | than the default, create a type variant marked as such and set | |
16254 | the length accordingly. */ | |
16255 | if (TYPE_LENGTH (type) != byte_size | |
16256 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16257 | && alignment != TYPE_RAW_ALIGN (type)) | |
16258 | || addr_class != DW_ADDR_none) | |
c906108c | 16259 | { |
5e2b427d | 16260 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16261 | { |
16262 | int type_flags; | |
16263 | ||
849957d9 | 16264 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16265 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16266 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16267 | == 0); | |
8b2dbe47 KB |
16268 | type = make_type_with_address_space (type, type_flags); |
16269 | } | |
16270 | else if (TYPE_LENGTH (type) != byte_size) | |
16271 | { | |
b98664d3 | 16272 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16273 | } |
2b4424c3 TT |
16274 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16275 | { | |
b98664d3 | 16276 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16277 | " - DIE at %s [in module %s]"), |
16278 | sect_offset_str (die->sect_off), | |
16279 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16280 | } | |
6e70227d | 16281 | else |
9a619af0 MS |
16282 | { |
16283 | /* Should we also complain about unhandled address classes? */ | |
16284 | } | |
c906108c | 16285 | } |
8b2dbe47 KB |
16286 | |
16287 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16288 | set_type_align (type, alignment); |
f792889a | 16289 | return set_die_type (die, type, cu); |
c906108c SS |
16290 | } |
16291 | ||
16292 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16293 | the user defined type vector. */ | |
16294 | ||
f792889a | 16295 | static struct type * |
e7c27a73 | 16296 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16297 | { |
16298 | struct type *type; | |
16299 | struct type *to_type; | |
16300 | struct type *domain; | |
16301 | ||
e7c27a73 DJ |
16302 | to_type = die_type (die, cu); |
16303 | domain = die_containing_type (die, cu); | |
0d5de010 | 16304 | |
7e314c57 JK |
16305 | /* The calls above may have already set the type for this DIE. */ |
16306 | type = get_die_type (die, cu); | |
16307 | if (type) | |
16308 | return type; | |
16309 | ||
0d5de010 DJ |
16310 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16311 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16312 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16313 | { | |
518817b3 SM |
16314 | struct type *new_type |
16315 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16316 | |
16317 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16318 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16319 | TYPE_VARARGS (to_type)); | |
16320 | type = lookup_methodptr_type (new_type); | |
16321 | } | |
0d5de010 DJ |
16322 | else |
16323 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16324 | |
f792889a | 16325 | return set_die_type (die, type, cu); |
c906108c SS |
16326 | } |
16327 | ||
4297a3f0 | 16328 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16329 | the user defined type vector. */ |
16330 | ||
f792889a | 16331 | static struct type * |
4297a3f0 AV |
16332 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16333 | enum type_code refcode) | |
c906108c | 16334 | { |
e7c27a73 | 16335 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16336 | struct type *type, *target_type; |
c906108c SS |
16337 | struct attribute *attr; |
16338 | ||
4297a3f0 AV |
16339 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16340 | ||
7e314c57 JK |
16341 | target_type = die_type (die, cu); |
16342 | ||
16343 | /* The die_type call above may have already set the type for this DIE. */ | |
16344 | type = get_die_type (die, cu); | |
16345 | if (type) | |
16346 | return type; | |
16347 | ||
4297a3f0 | 16348 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16349 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16350 | if (attr != nullptr) |
c906108c SS |
16351 | { |
16352 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16353 | } | |
16354 | else | |
16355 | { | |
107d2387 | 16356 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16357 | } |
2b4424c3 | 16358 | maybe_set_alignment (cu, die, type); |
f792889a | 16359 | return set_die_type (die, type, cu); |
c906108c SS |
16360 | } |
16361 | ||
cf363f18 MW |
16362 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16363 | outputs DWARF type qualifiers that apply to an array, not the | |
16364 | element type. But GDB relies on the array element type to carry | |
16365 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16366 | specification. */ | |
16367 | ||
16368 | static struct type * | |
16369 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16370 | struct type *base_type, int cnst, int voltl) | |
16371 | { | |
16372 | struct type *el_type, *inner_array; | |
16373 | ||
16374 | base_type = copy_type (base_type); | |
16375 | inner_array = base_type; | |
16376 | ||
16377 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16378 | { | |
16379 | TYPE_TARGET_TYPE (inner_array) = | |
16380 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16381 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16382 | } | |
16383 | ||
16384 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16385 | cnst |= TYPE_CONST (el_type); | |
16386 | voltl |= TYPE_VOLATILE (el_type); | |
16387 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16388 | ||
16389 | return set_die_type (die, base_type, cu); | |
16390 | } | |
16391 | ||
f792889a | 16392 | static struct type * |
e7c27a73 | 16393 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16394 | { |
f792889a | 16395 | struct type *base_type, *cv_type; |
c906108c | 16396 | |
e7c27a73 | 16397 | base_type = die_type (die, cu); |
7e314c57 JK |
16398 | |
16399 | /* The die_type call above may have already set the type for this DIE. */ | |
16400 | cv_type = get_die_type (die, cu); | |
16401 | if (cv_type) | |
16402 | return cv_type; | |
16403 | ||
2f608a3a KW |
16404 | /* In case the const qualifier is applied to an array type, the element type |
16405 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16406 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16407 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16408 | |
f792889a DJ |
16409 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16410 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16411 | } |
16412 | ||
f792889a | 16413 | static struct type * |
e7c27a73 | 16414 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16415 | { |
f792889a | 16416 | struct type *base_type, *cv_type; |
c906108c | 16417 | |
e7c27a73 | 16418 | base_type = die_type (die, cu); |
7e314c57 JK |
16419 | |
16420 | /* The die_type call above may have already set the type for this DIE. */ | |
16421 | cv_type = get_die_type (die, cu); | |
16422 | if (cv_type) | |
16423 | return cv_type; | |
16424 | ||
cf363f18 MW |
16425 | /* In case the volatile qualifier is applied to an array type, the |
16426 | element type is so qualified, not the array type (section 6.7.3 | |
16427 | of C99). */ | |
16428 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16429 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16430 | ||
f792889a DJ |
16431 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16432 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16433 | } |
16434 | ||
06d66ee9 TT |
16435 | /* Handle DW_TAG_restrict_type. */ |
16436 | ||
16437 | static struct type * | |
16438 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16439 | { | |
16440 | struct type *base_type, *cv_type; | |
16441 | ||
16442 | base_type = die_type (die, cu); | |
16443 | ||
16444 | /* The die_type call above may have already set the type for this DIE. */ | |
16445 | cv_type = get_die_type (die, cu); | |
16446 | if (cv_type) | |
16447 | return cv_type; | |
16448 | ||
16449 | cv_type = make_restrict_type (base_type); | |
16450 | return set_die_type (die, cv_type, cu); | |
16451 | } | |
16452 | ||
a2c2acaf MW |
16453 | /* Handle DW_TAG_atomic_type. */ |
16454 | ||
16455 | static struct type * | |
16456 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16457 | { | |
16458 | struct type *base_type, *cv_type; | |
16459 | ||
16460 | base_type = die_type (die, cu); | |
16461 | ||
16462 | /* The die_type call above may have already set the type for this DIE. */ | |
16463 | cv_type = get_die_type (die, cu); | |
16464 | if (cv_type) | |
16465 | return cv_type; | |
16466 | ||
16467 | cv_type = make_atomic_type (base_type); | |
16468 | return set_die_type (die, cv_type, cu); | |
16469 | } | |
16470 | ||
c906108c SS |
16471 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16472 | the user defined type vector. It isn't really a user defined type, | |
16473 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16474 | attribute to reference it. */ | |
16475 | ||
f792889a | 16476 | static struct type * |
e7c27a73 | 16477 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16478 | { |
518817b3 | 16479 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 16480 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
16481 | struct type *type, *range_type, *index_type, *char_type; |
16482 | struct attribute *attr; | |
216a7e6b AB |
16483 | struct dynamic_prop prop; |
16484 | bool length_is_constant = true; | |
16485 | LONGEST length; | |
16486 | ||
16487 | /* There are a couple of places where bit sizes might be made use of | |
16488 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16489 | of make use of these. Handling bit sizes that are a multiple of the | |
16490 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16491 | with that problem when we have to. Warn about these attributes being | |
16492 | unsupported, then parse the type and ignore them like we always | |
16493 | have. */ | |
16494 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16495 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16496 | { | |
16497 | static bool warning_printed = false; | |
16498 | if (!warning_printed) | |
16499 | { | |
16500 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16501 | "currently supported on DW_TAG_string_type.")); | |
16502 | warning_printed = true; | |
16503 | } | |
16504 | } | |
c906108c | 16505 | |
e142c38c | 16506 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16507 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16508 | { |
16509 | /* The string length describes the location at which the length of | |
16510 | the string can be found. The size of the length field can be | |
16511 | specified with one of the attributes below. */ | |
16512 | struct type *prop_type; | |
16513 | struct attribute *len | |
16514 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16515 | if (len == nullptr) | |
16516 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16517 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16518 | { |
16519 | /* Pass 0 as the default as we know this attribute is constant | |
16520 | and the default value will not be returned. */ | |
0826b30a | 16521 | LONGEST sz = len->constant_value (0); |
09ba997f | 16522 | prop_type = cu->per_cu->int_type (sz, true); |
216a7e6b AB |
16523 | } |
16524 | else | |
16525 | { | |
16526 | /* If the size is not specified then we assume it is the size of | |
16527 | an address on this target. */ | |
09ba997f | 16528 | prop_type = cu->per_cu->addr_sized_int_type (true); |
216a7e6b AB |
16529 | } |
16530 | ||
16531 | /* Convert the attribute into a dynamic property. */ | |
16532 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16533 | length = 1; | |
16534 | else | |
16535 | length_is_constant = false; | |
16536 | } | |
16537 | else if (attr != nullptr) | |
16538 | { | |
16539 | /* This DW_AT_string_length just contains the length with no | |
16540 | indirection. There's no need to create a dynamic property in this | |
16541 | case. Pass 0 for the default value as we know it will not be | |
16542 | returned in this case. */ | |
0826b30a | 16543 | length = attr->constant_value (0); |
216a7e6b AB |
16544 | } |
16545 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 16546 | { |
216a7e6b | 16547 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 16548 | length = attr->constant_value (1); |
c906108c SS |
16549 | } |
16550 | else | |
16551 | { | |
216a7e6b AB |
16552 | /* Use 1 as a fallback length if we have nothing else. */ |
16553 | length = 1; | |
c906108c | 16554 | } |
6ccb9162 | 16555 | |
46bf5051 | 16556 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
16557 | if (length_is_constant) |
16558 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
16559 | else | |
16560 | { | |
16561 | struct dynamic_prop low_bound; | |
16562 | ||
16563 | low_bound.kind = PROP_CONST; | |
16564 | low_bound.data.const_val = 1; | |
16565 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
16566 | } | |
3b7538c0 UW |
16567 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
16568 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 16569 | |
f792889a | 16570 | return set_die_type (die, type, cu); |
c906108c SS |
16571 | } |
16572 | ||
4d804846 JB |
16573 | /* Assuming that DIE corresponds to a function, returns nonzero |
16574 | if the function is prototyped. */ | |
16575 | ||
16576 | static int | |
16577 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
16578 | { | |
16579 | struct attribute *attr; | |
16580 | ||
16581 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
16582 | if (attr && (DW_UNSND (attr) != 0)) | |
16583 | return 1; | |
16584 | ||
16585 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 16586 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
16587 | languages that allow unprototyped functions (Eg: Objective C). |
16588 | For all other languages, assume that functions are always | |
16589 | prototyped. */ | |
16590 | if (cu->language != language_c | |
16591 | && cu->language != language_objc | |
16592 | && cu->language != language_opencl) | |
16593 | return 1; | |
16594 | ||
16595 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
16596 | prototyped and unprototyped functions; default to prototyped, | |
16597 | since that is more common in modern code (and RealView warns | |
16598 | about unprototyped functions). */ | |
16599 | if (producer_is_realview (cu->producer)) | |
16600 | return 1; | |
16601 | ||
16602 | return 0; | |
16603 | } | |
16604 | ||
c906108c SS |
16605 | /* Handle DIES due to C code like: |
16606 | ||
16607 | struct foo | |
c5aa993b JM |
16608 | { |
16609 | int (*funcp)(int a, long l); | |
16610 | int b; | |
16611 | }; | |
c906108c | 16612 | |
0963b4bd | 16613 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 16614 | |
f792889a | 16615 | static struct type * |
e7c27a73 | 16616 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16617 | { |
518817b3 | 16618 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
16619 | struct type *type; /* Type that this function returns. */ |
16620 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
16621 | struct attribute *attr; |
16622 | ||
e7c27a73 | 16623 | type = die_type (die, cu); |
7e314c57 JK |
16624 | |
16625 | /* The die_type call above may have already set the type for this DIE. */ | |
16626 | ftype = get_die_type (die, cu); | |
16627 | if (ftype) | |
16628 | return ftype; | |
16629 | ||
0c8b41f1 | 16630 | ftype = lookup_function_type (type); |
c906108c | 16631 | |
4d804846 | 16632 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 16633 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 16634 | |
c055b101 CV |
16635 | /* Store the calling convention in the type if it's available in |
16636 | the subroutine die. Otherwise set the calling convention to | |
16637 | the default value DW_CC_normal. */ | |
16638 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
16639 | if (attr != nullptr |
16640 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
16641 | TYPE_CALLING_CONVENTION (ftype) | |
16642 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
16643 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
16644 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
16645 | else | |
16646 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 16647 | |
743649fd MW |
16648 | /* Record whether the function returns normally to its caller or not |
16649 | if the DWARF producer set that information. */ | |
16650 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
16651 | if (attr && (DW_UNSND (attr) != 0)) | |
16652 | TYPE_NO_RETURN (ftype) = 1; | |
16653 | ||
76c10ea2 GM |
16654 | /* We need to add the subroutine type to the die immediately so |
16655 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 16656 | declared as the same subroutine type. */ |
76c10ea2 | 16657 | set_die_type (die, ftype, cu); |
6e70227d | 16658 | |
639d11d3 | 16659 | if (die->child != NULL) |
c906108c | 16660 | { |
bb5ed363 | 16661 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 16662 | struct die_info *child_die; |
8072405b | 16663 | int nparams, iparams; |
c906108c SS |
16664 | |
16665 | /* Count the number of parameters. | |
16666 | FIXME: GDB currently ignores vararg functions, but knows about | |
16667 | vararg member functions. */ | |
8072405b | 16668 | nparams = 0; |
639d11d3 | 16669 | child_die = die->child; |
c906108c SS |
16670 | while (child_die && child_die->tag) |
16671 | { | |
16672 | if (child_die->tag == DW_TAG_formal_parameter) | |
16673 | nparams++; | |
16674 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 16675 | TYPE_VARARGS (ftype) = 1; |
436c571c | 16676 | child_die = child_die->sibling; |
c906108c SS |
16677 | } |
16678 | ||
16679 | /* Allocate storage for parameters and fill them in. */ | |
16680 | TYPE_NFIELDS (ftype) = nparams; | |
16681 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 16682 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 16683 | |
8072405b JK |
16684 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
16685 | even if we error out during the parameters reading below. */ | |
16686 | for (iparams = 0; iparams < nparams; iparams++) | |
16687 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
16688 | ||
16689 | iparams = 0; | |
639d11d3 | 16690 | child_die = die->child; |
c906108c SS |
16691 | while (child_die && child_die->tag) |
16692 | { | |
16693 | if (child_die->tag == DW_TAG_formal_parameter) | |
16694 | { | |
3ce3b1ba PA |
16695 | struct type *arg_type; |
16696 | ||
16697 | /* DWARF version 2 has no clean way to discern C++ | |
16698 | static and non-static member functions. G++ helps | |
16699 | GDB by marking the first parameter for non-static | |
16700 | member functions (which is the this pointer) as | |
16701 | artificial. We pass this information to | |
16702 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
16703 | ||
16704 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
16705 | 4.5 does not yet generate. */ | |
e142c38c | 16706 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 16707 | if (attr != nullptr) |
c906108c SS |
16708 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
16709 | else | |
9c37b5ae | 16710 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
16711 | arg_type = die_type (child_die, cu); |
16712 | ||
16713 | /* RealView does not mark THIS as const, which the testsuite | |
16714 | expects. GCC marks THIS as const in method definitions, | |
16715 | but not in the class specifications (GCC PR 43053). */ | |
16716 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
16717 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
16718 | { | |
16719 | int is_this = 0; | |
16720 | struct dwarf2_cu *arg_cu = cu; | |
16721 | const char *name = dwarf2_name (child_die, cu); | |
16722 | ||
16723 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 16724 | if (attr != nullptr) |
3ce3b1ba PA |
16725 | { |
16726 | /* If the compiler emits this, use it. */ | |
16727 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
16728 | is_this = 1; | |
16729 | } | |
16730 | else if (name && strcmp (name, "this") == 0) | |
16731 | /* Function definitions will have the argument names. */ | |
16732 | is_this = 1; | |
16733 | else if (name == NULL && iparams == 0) | |
16734 | /* Declarations may not have the names, so like | |
16735 | elsewhere in GDB, assume an artificial first | |
16736 | argument is "this". */ | |
16737 | is_this = 1; | |
16738 | ||
16739 | if (is_this) | |
16740 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
16741 | arg_type, 0); | |
16742 | } | |
16743 | ||
16744 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
16745 | iparams++; |
16746 | } | |
436c571c | 16747 | child_die = child_die->sibling; |
c906108c SS |
16748 | } |
16749 | } | |
16750 | ||
76c10ea2 | 16751 | return ftype; |
c906108c SS |
16752 | } |
16753 | ||
f792889a | 16754 | static struct type * |
e7c27a73 | 16755 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16756 | { |
518817b3 | 16757 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16758 | const char *name = NULL; |
3c8e0968 | 16759 | struct type *this_type, *target_type; |
c906108c | 16760 | |
94af9270 | 16761 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
16762 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
16763 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 16764 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
16765 | target_type = die_type (die, cu); |
16766 | if (target_type != this_type) | |
16767 | TYPE_TARGET_TYPE (this_type) = target_type; | |
16768 | else | |
16769 | { | |
16770 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
16771 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 16772 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
16773 | "- DIE at %s [in module %s]"), |
16774 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
16775 | TYPE_TARGET_TYPE (this_type) = NULL; |
16776 | } | |
e4003a34 TV |
16777 | if (name == NULL) |
16778 | { | |
16779 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
16780 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
16781 | Handle these by just returning the target type, rather than | |
16782 | constructing an anonymous typedef type and trying to handle this | |
16783 | elsewhere. */ | |
16784 | set_die_type (die, target_type, cu); | |
16785 | return target_type; | |
16786 | } | |
f792889a | 16787 | return this_type; |
c906108c SS |
16788 | } |
16789 | ||
9b790ce7 UW |
16790 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
16791 | (which may be different from NAME) to the architecture back-end to allow | |
16792 | it to guess the correct format if necessary. */ | |
16793 | ||
16794 | static struct type * | |
16795 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 16796 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
16797 | { |
16798 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
16799 | const struct floatformat **format; | |
16800 | struct type *type; | |
16801 | ||
16802 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
16803 | if (format) | |
103a685e | 16804 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 16805 | else |
77b7c781 | 16806 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
16807 | |
16808 | return type; | |
16809 | } | |
16810 | ||
eb77c9df AB |
16811 | /* Allocate an integer type of size BITS and name NAME. */ |
16812 | ||
16813 | static struct type * | |
16814 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
16815 | int bits, int unsigned_p, const char *name) | |
16816 | { | |
16817 | struct type *type; | |
16818 | ||
16819 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
16820 | instead of using DW_TAG_unspecified_type. This has been seen on | |
16821 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
16822 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
16823 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
16824 | type = objfile_type (objfile)->builtin_void; |
16825 | else | |
16826 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
16827 | ||
16828 | return type; | |
16829 | } | |
16830 | ||
8bdc1658 AB |
16831 | /* Initialise and return a floating point type of size BITS suitable for |
16832 | use as a component of a complex number. The NAME_HINT is passed through | |
16833 | when initialising the floating point type and is the name of the complex | |
16834 | type. | |
16835 | ||
16836 | As DWARF doesn't currently provide an explicit name for the components | |
16837 | of a complex number, but it can be helpful to have these components | |
16838 | named, we try to select a suitable name based on the size of the | |
16839 | component. */ | |
16840 | static struct type * | |
16841 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
16842 | struct objfile *objfile, | |
103a685e TT |
16843 | int bits, const char *name_hint, |
16844 | enum bfd_endian byte_order) | |
8bdc1658 AB |
16845 | { |
16846 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
16847 | struct type *tt = nullptr; | |
16848 | ||
35add35e AB |
16849 | /* Try to find a suitable floating point builtin type of size BITS. |
16850 | We're going to use the name of this type as the name for the complex | |
16851 | target type that we are about to create. */ | |
1db455a7 | 16852 | switch (cu->language) |
8bdc1658 | 16853 | { |
1db455a7 AB |
16854 | case language_fortran: |
16855 | switch (bits) | |
16856 | { | |
16857 | case 32: | |
16858 | tt = builtin_f_type (gdbarch)->builtin_real; | |
16859 | break; | |
16860 | case 64: | |
16861 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
16862 | break; | |
16863 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16864 | case 128: | |
16865 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
16866 | break; | |
16867 | } | |
8bdc1658 | 16868 | break; |
1db455a7 AB |
16869 | default: |
16870 | switch (bits) | |
16871 | { | |
16872 | case 32: | |
16873 | tt = builtin_type (gdbarch)->builtin_float; | |
16874 | break; | |
16875 | case 64: | |
16876 | tt = builtin_type (gdbarch)->builtin_double; | |
16877 | break; | |
16878 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16879 | case 128: | |
16880 | tt = builtin_type (gdbarch)->builtin_long_double; | |
16881 | break; | |
16882 | } | |
8bdc1658 AB |
16883 | break; |
16884 | } | |
16885 | ||
35add35e AB |
16886 | /* If the type we found doesn't match the size we were looking for, then |
16887 | pretend we didn't find a type at all, the complex target type we | |
16888 | create will then be nameless. */ | |
a12e5744 | 16889 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
16890 | tt = nullptr; |
16891 | ||
8bdc1658 | 16892 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 16893 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
16894 | } |
16895 | ||
c906108c SS |
16896 | /* Find a representation of a given base type and install |
16897 | it in the TYPE field of the die. */ | |
16898 | ||
f792889a | 16899 | static struct type * |
e7c27a73 | 16900 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16901 | { |
518817b3 | 16902 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
16903 | struct type *type; |
16904 | struct attribute *attr; | |
19f392bc | 16905 | int encoding = 0, bits = 0; |
15d034d0 | 16906 | const char *name; |
34877895 | 16907 | gdbarch *arch; |
c906108c | 16908 | |
e142c38c | 16909 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 16910 | if (attr != nullptr) |
34877895 | 16911 | encoding = DW_UNSND (attr); |
e142c38c | 16912 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16913 | if (attr != nullptr) |
34877895 | 16914 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 16915 | name = dwarf2_name (die, cu); |
6ccb9162 | 16916 | if (!name) |
34877895 | 16917 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
16918 | |
16919 | arch = get_objfile_arch (objfile); | |
16920 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
16921 | ||
34877895 PJ |
16922 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
16923 | if (attr) | |
103a685e TT |
16924 | { |
16925 | int endianity = DW_UNSND (attr); | |
16926 | ||
16927 | switch (endianity) | |
16928 | { | |
16929 | case DW_END_big: | |
16930 | byte_order = BFD_ENDIAN_BIG; | |
16931 | break; | |
16932 | case DW_END_little: | |
16933 | byte_order = BFD_ENDIAN_LITTLE; | |
16934 | break; | |
16935 | default: | |
16936 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
16937 | break; | |
16938 | } | |
16939 | } | |
6ccb9162 UW |
16940 | |
16941 | switch (encoding) | |
c906108c | 16942 | { |
6ccb9162 UW |
16943 | case DW_ATE_address: |
16944 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 16945 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 16946 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
16947 | break; |
16948 | case DW_ATE_boolean: | |
19f392bc | 16949 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
16950 | break; |
16951 | case DW_ATE_complex_float: | |
103a685e TT |
16952 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
16953 | byte_order); | |
93689ce9 TT |
16954 | if (TYPE_CODE (type) == TYPE_CODE_ERROR) |
16955 | { | |
16956 | if (name == nullptr) | |
16957 | { | |
16958 | struct obstack *obstack | |
16959 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
16960 | name = obconcat (obstack, "_Complex ", TYPE_NAME (type), | |
16961 | nullptr); | |
16962 | } | |
16963 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
16964 | } | |
16965 | else | |
16966 | type = init_complex_type (name, type); | |
6ccb9162 UW |
16967 | break; |
16968 | case DW_ATE_decimal_float: | |
19f392bc | 16969 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
16970 | break; |
16971 | case DW_ATE_float: | |
103a685e | 16972 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
16973 | break; |
16974 | case DW_ATE_signed: | |
eb77c9df | 16975 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16976 | break; |
16977 | case DW_ATE_unsigned: | |
3b2b8fea TT |
16978 | if (cu->language == language_fortran |
16979 | && name | |
61012eef | 16980 | && startswith (name, "character(")) |
19f392bc UW |
16981 | type = init_character_type (objfile, bits, 1, name); |
16982 | else | |
eb77c9df | 16983 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
16984 | break; |
16985 | case DW_ATE_signed_char: | |
6e70227d | 16986 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
16987 | || cu->language == language_pascal |
16988 | || cu->language == language_fortran) | |
19f392bc UW |
16989 | type = init_character_type (objfile, bits, 0, name); |
16990 | else | |
eb77c9df | 16991 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16992 | break; |
16993 | case DW_ATE_unsigned_char: | |
868a0084 | 16994 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 16995 | || cu->language == language_pascal |
c44af4eb TT |
16996 | || cu->language == language_fortran |
16997 | || cu->language == language_rust) | |
19f392bc UW |
16998 | type = init_character_type (objfile, bits, 1, name); |
16999 | else | |
eb77c9df | 17000 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17001 | break; |
75079b2b | 17002 | case DW_ATE_UTF: |
53e710ac | 17003 | { |
53e710ac PA |
17004 | if (bits == 16) |
17005 | type = builtin_type (arch)->builtin_char16; | |
17006 | else if (bits == 32) | |
17007 | type = builtin_type (arch)->builtin_char32; | |
17008 | else | |
17009 | { | |
b98664d3 | 17010 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17011 | bits); |
eb77c9df | 17012 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17013 | } |
17014 | return set_die_type (die, type, cu); | |
17015 | } | |
75079b2b TT |
17016 | break; |
17017 | ||
6ccb9162 | 17018 | default: |
b98664d3 | 17019 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17020 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17021 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17022 | break; |
c906108c | 17023 | } |
6ccb9162 | 17024 | |
0114d602 | 17025 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17026 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17027 | |
2b4424c3 TT |
17028 | maybe_set_alignment (cu, die, type); |
17029 | ||
103a685e | 17030 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17031 | |
f792889a | 17032 | return set_die_type (die, type, cu); |
c906108c SS |
17033 | } |
17034 | ||
80180f79 SA |
17035 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17036 | resulting value of the attribute into struct bound_prop. | |
17037 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17038 | ||
17039 | static int | |
17040 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17041 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17042 | struct type *default_type) | |
80180f79 SA |
17043 | { |
17044 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17045 | struct obstack *obstack |
17046 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17047 | |
9a49df9d AB |
17048 | gdb_assert (default_type != NULL); |
17049 | ||
80180f79 SA |
17050 | if (attr == NULL || prop == NULL) |
17051 | return 0; | |
17052 | ||
4fc6c0d5 | 17053 | if (attr->form_is_block ()) |
80180f79 | 17054 | { |
8d749320 | 17055 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17056 | baton->property_type = default_type; |
80180f79 SA |
17057 | baton->locexpr.per_cu = cu->per_cu; |
17058 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17059 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17060 | switch (attr->name) |
17061 | { | |
17062 | case DW_AT_string_length: | |
17063 | baton->locexpr.is_reference = true; | |
17064 | break; | |
17065 | default: | |
17066 | baton->locexpr.is_reference = false; | |
17067 | break; | |
17068 | } | |
80180f79 SA |
17069 | prop->data.baton = baton; |
17070 | prop->kind = PROP_LOCEXPR; | |
17071 | gdb_assert (prop->data.baton != NULL); | |
17072 | } | |
cd6c91b4 | 17073 | else if (attr->form_is_ref ()) |
80180f79 SA |
17074 | { |
17075 | struct dwarf2_cu *target_cu = cu; | |
17076 | struct die_info *target_die; | |
17077 | struct attribute *target_attr; | |
17078 | ||
17079 | target_die = follow_die_ref (die, attr, &target_cu); | |
17080 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17081 | if (target_attr == NULL) |
17082 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17083 | target_cu); | |
80180f79 SA |
17084 | if (target_attr == NULL) |
17085 | return 0; | |
17086 | ||
df25ebbd | 17087 | switch (target_attr->name) |
80180f79 | 17088 | { |
df25ebbd | 17089 | case DW_AT_location: |
cd6c91b4 | 17090 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17091 | { |
8d749320 | 17092 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17093 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17094 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17095 | prop->data.baton = baton; | |
17096 | prop->kind = PROP_LOCLIST; | |
17097 | gdb_assert (prop->data.baton != NULL); | |
17098 | } | |
4fc6c0d5 | 17099 | else if (target_attr->form_is_block ()) |
df25ebbd | 17100 | { |
8d749320 | 17101 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17102 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17103 | baton->locexpr.per_cu = cu->per_cu; |
17104 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17105 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17106 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17107 | prop->data.baton = baton; |
17108 | prop->kind = PROP_LOCEXPR; | |
17109 | gdb_assert (prop->data.baton != NULL); | |
17110 | } | |
17111 | else | |
17112 | { | |
17113 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17114 | "dynamic property"); | |
17115 | return 0; | |
17116 | } | |
17117 | break; | |
17118 | case DW_AT_data_member_location: | |
17119 | { | |
17120 | LONGEST offset; | |
17121 | ||
17122 | if (!handle_data_member_location (target_die, target_cu, | |
17123 | &offset)) | |
17124 | return 0; | |
17125 | ||
8d749320 | 17126 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17127 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17128 | target_cu); |
df25ebbd JB |
17129 | baton->offset_info.offset = offset; |
17130 | baton->offset_info.type = die_type (target_die, target_cu); | |
17131 | prop->data.baton = baton; | |
17132 | prop->kind = PROP_ADDR_OFFSET; | |
17133 | break; | |
17134 | } | |
80180f79 SA |
17135 | } |
17136 | } | |
cd6c91b4 | 17137 | else if (attr->form_is_constant ()) |
80180f79 | 17138 | { |
0826b30a | 17139 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17140 | prop->kind = PROP_CONST; |
17141 | } | |
17142 | else | |
17143 | { | |
17144 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17145 | dwarf2_name (die, cu)); | |
17146 | return 0; | |
17147 | } | |
17148 | ||
17149 | return 1; | |
17150 | } | |
17151 | ||
09ba997f | 17152 | /* See read.h. */ |
9a49df9d | 17153 | |
09ba997f TT |
17154 | struct type * |
17155 | dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const | |
9a49df9d | 17156 | { |
09ba997f | 17157 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
17158 | struct type *int_type; |
17159 | ||
17160 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17161 | #define TRY_TYPE(F) \ |
17162 | int_type = (unsigned_p \ | |
17163 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17164 | : objfile_type (objfile)->builtin_ ## F); \ | |
17165 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17166 | return int_type |
17167 | ||
17168 | TRY_TYPE (char); | |
17169 | TRY_TYPE (short); | |
17170 | TRY_TYPE (int); | |
17171 | TRY_TYPE (long); | |
17172 | TRY_TYPE (long_long); | |
17173 | ||
17174 | #undef TRY_TYPE | |
17175 | ||
17176 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17177 | } | |
17178 | ||
09ba997f | 17179 | /* See read.h. */ |
11a8b164 | 17180 | |
09ba997f TT |
17181 | struct type * |
17182 | dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const | |
11a8b164 | 17183 | { |
09ba997f TT |
17184 | int addr_size = this->addr_size (); |
17185 | return int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17186 | } |
17187 | ||
b86352cf AB |
17188 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17189 | present (which is valid) then compute the default type based on the | |
17190 | compilation units address size. */ | |
17191 | ||
17192 | static struct type * | |
17193 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17194 | { | |
17195 | struct type *index_type = die_type (die, cu); | |
17196 | ||
17197 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17198 | without specifying a base type. | |
17199 | In that case, the base type must be set to the type of | |
17200 | the lower bound, upper bound or count, in that order, if any of these | |
17201 | three attributes references an object that has a type. | |
17202 | If no base type is found, the Dwarf-2 specifications say that | |
17203 | a signed integer type of size equal to the size of an address should | |
17204 | be used. | |
17205 | For the following C code: `extern char gdb_int [];' | |
17206 | GCC produces an empty range DIE. | |
17207 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17208 | high bound or count are not yet handled by this code. */ | |
17209 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
09ba997f | 17210 | index_type = cu->per_cu->addr_sized_int_type (false); |
b86352cf AB |
17211 | |
17212 | return index_type; | |
17213 | } | |
17214 | ||
a02abb62 JB |
17215 | /* Read the given DW_AT_subrange DIE. */ |
17216 | ||
f792889a | 17217 | static struct type * |
a02abb62 JB |
17218 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17219 | { | |
4c9ad8c2 | 17220 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17221 | struct type *range_type; |
17222 | struct attribute *attr; | |
729efb13 | 17223 | struct dynamic_prop low, high; |
4fae6e18 | 17224 | int low_default_is_valid; |
c451ebe5 | 17225 | int high_bound_is_count = 0; |
15d034d0 | 17226 | const char *name; |
d359392f | 17227 | ULONGEST negative_mask; |
e77813c8 | 17228 | |
b86352cf AB |
17229 | orig_base_type = read_subrange_index_type (die, cu); |
17230 | ||
4c9ad8c2 TT |
17231 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17232 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17233 | creating the range type, but we use the result of check_typedef | |
17234 | when examining properties of the type. */ | |
17235 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17236 | |
7e314c57 JK |
17237 | /* The die_type call above may have already set the type for this DIE. */ |
17238 | range_type = get_die_type (die, cu); | |
17239 | if (range_type) | |
17240 | return range_type; | |
17241 | ||
729efb13 SA |
17242 | low.kind = PROP_CONST; |
17243 | high.kind = PROP_CONST; | |
17244 | high.data.const_val = 0; | |
17245 | ||
4fae6e18 JK |
17246 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17247 | omitting DW_AT_lower_bound. */ | |
17248 | switch (cu->language) | |
6e70227d | 17249 | { |
4fae6e18 JK |
17250 | case language_c: |
17251 | case language_cplus: | |
729efb13 | 17252 | low.data.const_val = 0; |
4fae6e18 JK |
17253 | low_default_is_valid = 1; |
17254 | break; | |
17255 | case language_fortran: | |
729efb13 | 17256 | low.data.const_val = 1; |
4fae6e18 JK |
17257 | low_default_is_valid = 1; |
17258 | break; | |
17259 | case language_d: | |
4fae6e18 | 17260 | case language_objc: |
c44af4eb | 17261 | case language_rust: |
729efb13 | 17262 | low.data.const_val = 0; |
4fae6e18 JK |
17263 | low_default_is_valid = (cu->header.version >= 4); |
17264 | break; | |
17265 | case language_ada: | |
17266 | case language_m2: | |
17267 | case language_pascal: | |
729efb13 | 17268 | low.data.const_val = 1; |
4fae6e18 JK |
17269 | low_default_is_valid = (cu->header.version >= 4); |
17270 | break; | |
17271 | default: | |
729efb13 | 17272 | low.data.const_val = 0; |
4fae6e18 JK |
17273 | low_default_is_valid = 0; |
17274 | break; | |
a02abb62 JB |
17275 | } |
17276 | ||
e142c38c | 17277 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17278 | if (attr != nullptr) |
9a49df9d | 17279 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17280 | else if (!low_default_is_valid) |
b98664d3 | 17281 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17282 | "- DIE at %s [in module %s]"), |
17283 | sect_offset_str (die->sect_off), | |
518817b3 | 17284 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17285 | |
506f5c41 TV |
17286 | struct attribute *attr_ub, *attr_count; |
17287 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17288 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17289 | { |
506f5c41 | 17290 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17291 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17292 | { |
c451ebe5 SA |
17293 | /* If bounds are constant do the final calculation here. */ |
17294 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17295 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17296 | else | |
17297 | high_bound_is_count = 1; | |
c2ff108b | 17298 | } |
506f5c41 TV |
17299 | else |
17300 | { | |
17301 | if (attr_ub != NULL) | |
17302 | complaint (_("Unresolved DW_AT_upper_bound " | |
17303 | "- DIE at %s [in module %s]"), | |
17304 | sect_offset_str (die->sect_off), | |
17305 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17306 | if (attr_count != NULL) | |
17307 | complaint (_("Unresolved DW_AT_count " | |
17308 | "- DIE at %s [in module %s]"), | |
17309 | sect_offset_str (die->sect_off), | |
17310 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17311 | } | |
e77813c8 | 17312 | } |
a02abb62 | 17313 | |
4e962e74 TT |
17314 | LONGEST bias = 0; |
17315 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17316 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17317 | bias = bias_attr->constant_value (0); |
4e962e74 | 17318 | |
dbb9c2b1 JB |
17319 | /* Normally, the DWARF producers are expected to use a signed |
17320 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17321 | But this is unfortunately not always the case, as witnessed | |
17322 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17323 | is used instead. To work around that ambiguity, we treat | |
17324 | the bounds as signed, and thus sign-extend their values, when | |
17325 | the base type is signed. */ | |
6e70227d | 17326 | negative_mask = |
d359392f | 17327 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17328 | if (low.kind == PROP_CONST |
17329 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17330 | low.data.const_val |= negative_mask; | |
17331 | if (high.kind == PROP_CONST | |
17332 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17333 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17334 | |
5bbd8269 AB |
17335 | /* Check for bit and byte strides. */ |
17336 | struct dynamic_prop byte_stride_prop; | |
17337 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17338 | if (attr_byte_stride != nullptr) | |
17339 | { | |
09ba997f | 17340 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17341 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17342 | prop_type); | |
17343 | } | |
17344 | ||
17345 | struct dynamic_prop bit_stride_prop; | |
17346 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17347 | if (attr_bit_stride != nullptr) | |
17348 | { | |
17349 | /* It only makes sense to have either a bit or byte stride. */ | |
17350 | if (attr_byte_stride != nullptr) | |
17351 | { | |
17352 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17353 | "- DIE at %s [in module %s]"), | |
17354 | sect_offset_str (die->sect_off), | |
17355 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17356 | attr_bit_stride = nullptr; | |
17357 | } | |
17358 | else | |
17359 | { | |
09ba997f | 17360 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17361 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17362 | prop_type); | |
17363 | } | |
17364 | } | |
17365 | ||
17366 | if (attr_byte_stride != nullptr | |
17367 | || attr_bit_stride != nullptr) | |
17368 | { | |
17369 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17370 | struct dynamic_prop *stride | |
17371 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17372 | ||
17373 | range_type | |
17374 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17375 | &high, bias, stride, byte_stride_p); | |
17376 | } | |
17377 | else | |
17378 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17379 | |
c451ebe5 SA |
17380 | if (high_bound_is_count) |
17381 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17382 | ||
c2ff108b JK |
17383 | /* Ada expects an empty array on no boundary attributes. */ |
17384 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17385 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17386 | |
39cbfefa DJ |
17387 | name = dwarf2_name (die, cu); |
17388 | if (name) | |
17389 | TYPE_NAME (range_type) = name; | |
6e70227d | 17390 | |
e142c38c | 17391 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17392 | if (attr != nullptr) |
a02abb62 JB |
17393 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17394 | ||
2b4424c3 TT |
17395 | maybe_set_alignment (cu, die, range_type); |
17396 | ||
7e314c57 JK |
17397 | set_die_type (die, range_type, cu); |
17398 | ||
17399 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17400 | set_descriptive_type (range_type, die, cu); |
17401 | ||
7e314c57 | 17402 | return range_type; |
a02abb62 | 17403 | } |
6e70227d | 17404 | |
f792889a | 17405 | static struct type * |
81a17f79 JB |
17406 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17407 | { | |
17408 | struct type *type; | |
81a17f79 | 17409 | |
518817b3 SM |
17410 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17411 | NULL); | |
0114d602 | 17412 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17413 | |
74a2f8ff | 17414 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17415 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17416 | such a type, we treat it as a stub, and try to resolve it later on, |
17417 | when needed. */ | |
17418 | if (cu->language == language_ada) | |
17419 | TYPE_STUB (type) = 1; | |
17420 | ||
f792889a | 17421 | return set_die_type (die, type, cu); |
81a17f79 | 17422 | } |
a02abb62 | 17423 | |
639d11d3 DC |
17424 | /* Read a single die and all its descendents. Set the die's sibling |
17425 | field to NULL; set other fields in the die correctly, and set all | |
17426 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17427 | location of the info_ptr after reading all of those dies. PARENT | |
17428 | is the parent of the die in question. */ | |
17429 | ||
17430 | static struct die_info * | |
dee91e82 | 17431 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17432 | const gdb_byte *info_ptr, |
17433 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17434 | struct die_info *parent) |
639d11d3 DC |
17435 | { |
17436 | struct die_info *die; | |
d521ce57 | 17437 | const gdb_byte *cur_ptr; |
639d11d3 | 17438 | |
3e225074 | 17439 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17440 | if (die == NULL) |
17441 | { | |
17442 | *new_info_ptr = cur_ptr; | |
17443 | return NULL; | |
17444 | } | |
93311388 | 17445 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17446 | |
3e225074 | 17447 | if (die->has_children) |
bf6af496 | 17448 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17449 | else |
17450 | { | |
17451 | die->child = NULL; | |
17452 | *new_info_ptr = cur_ptr; | |
17453 | } | |
17454 | ||
17455 | die->sibling = NULL; | |
17456 | die->parent = parent; | |
17457 | return die; | |
17458 | } | |
17459 | ||
17460 | /* Read a die, all of its descendents, and all of its siblings; set | |
17461 | all of the fields of all of the dies correctly. Arguments are as | |
17462 | in read_die_and_children. */ | |
17463 | ||
17464 | static struct die_info * | |
bf6af496 | 17465 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17466 | const gdb_byte *info_ptr, |
17467 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17468 | struct die_info *parent) |
639d11d3 DC |
17469 | { |
17470 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17471 | const gdb_byte *cur_ptr; |
639d11d3 | 17472 | |
c906108c | 17473 | cur_ptr = info_ptr; |
639d11d3 DC |
17474 | first_die = last_sibling = NULL; |
17475 | ||
17476 | while (1) | |
c906108c | 17477 | { |
639d11d3 | 17478 | struct die_info *die |
dee91e82 | 17479 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17480 | |
1d325ec1 | 17481 | if (die == NULL) |
c906108c | 17482 | { |
639d11d3 DC |
17483 | *new_info_ptr = cur_ptr; |
17484 | return first_die; | |
c906108c | 17485 | } |
1d325ec1 DJ |
17486 | |
17487 | if (!first_die) | |
17488 | first_die = die; | |
c906108c | 17489 | else |
1d325ec1 DJ |
17490 | last_sibling->sibling = die; |
17491 | ||
17492 | last_sibling = die; | |
c906108c | 17493 | } |
c906108c SS |
17494 | } |
17495 | ||
bf6af496 DE |
17496 | /* Read a die, all of its descendents, and all of its siblings; set |
17497 | all of the fields of all of the dies correctly. Arguments are as | |
17498 | in read_die_and_children. | |
17499 | This the main entry point for reading a DIE and all its children. */ | |
17500 | ||
17501 | static struct die_info * | |
17502 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17503 | const gdb_byte *info_ptr, |
17504 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17505 | struct die_info *parent) |
17506 | { | |
17507 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17508 | new_info_ptr, parent); | |
17509 | ||
b4f54984 | 17510 | if (dwarf_die_debug) |
bf6af496 DE |
17511 | { |
17512 | fprintf_unfiltered (gdb_stdlog, | |
17513 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17514 | reader->die_section->get_name (), |
bf6af496 DE |
17515 | (unsigned) (info_ptr - reader->die_section->buffer), |
17516 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17517 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17518 | } |
17519 | ||
17520 | return die; | |
17521 | } | |
17522 | ||
3019eac3 DE |
17523 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17524 | attributes. | |
17525 | The caller is responsible for filling in the extra attributes | |
17526 | and updating (*DIEP)->num_attrs. | |
17527 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17528 | except for its child, sibling, and parent fields. */ |
93311388 | 17529 | |
d521ce57 | 17530 | static const gdb_byte * |
3019eac3 | 17531 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17532 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17533 | int num_extra_attrs) |
93311388 | 17534 | { |
b64f50a1 | 17535 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17536 | struct abbrev_info *abbrev; |
17537 | struct die_info *die; | |
17538 | struct dwarf2_cu *cu = reader->cu; | |
17539 | bfd *abfd = reader->abfd; | |
17540 | ||
9c541725 | 17541 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17542 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17543 | info_ptr += bytes_read; | |
17544 | if (!abbrev_number) | |
17545 | { | |
17546 | *diep = NULL; | |
93311388 DE |
17547 | return info_ptr; |
17548 | } | |
17549 | ||
685af9cd | 17550 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17551 | if (!abbrev) |
348e048f DE |
17552 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17553 | abbrev_number, | |
17554 | bfd_get_filename (abfd)); | |
17555 | ||
3019eac3 | 17556 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17557 | die->sect_off = sect_off; |
93311388 DE |
17558 | die->tag = abbrev->tag; |
17559 | die->abbrev = abbrev_number; | |
3e225074 | 17560 | die->has_children = abbrev->has_children; |
93311388 | 17561 | |
3019eac3 DE |
17562 | /* Make the result usable. |
17563 | The caller needs to update num_attrs after adding the extra | |
17564 | attributes. */ | |
93311388 DE |
17565 | die->num_attrs = abbrev->num_attrs; |
17566 | ||
18a8505e | 17567 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 17568 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
17569 | { |
17570 | bool need_reprocess; | |
17571 | info_ptr = | |
17572 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
17573 | info_ptr, &need_reprocess); | |
17574 | if (need_reprocess) | |
17575 | indexes_that_need_reprocess.push_back (i); | |
17576 | } | |
17577 | ||
052c8bb8 | 17578 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
17579 | if (attr != nullptr) |
17580 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 17581 | |
41144253 | 17582 | attr = die->attr (DW_AT_loclists_base); |
17583 | if (attr != nullptr) | |
17584 | cu->loclist_base = DW_UNSND (attr); | |
17585 | ||
a39fdb41 | 17586 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
17587 | if (maybe_addr_base.has_value ()) |
17588 | cu->addr_base = *maybe_addr_base; | |
17589 | for (int index : indexes_that_need_reprocess) | |
17590 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 17591 | *diep = die; |
93311388 DE |
17592 | return info_ptr; |
17593 | } | |
17594 | ||
3019eac3 DE |
17595 | /* Read a die and all its attributes. |
17596 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17597 | except for its child, sibling, and parent fields. */ |
3019eac3 | 17598 | |
d521ce57 | 17599 | static const gdb_byte * |
3019eac3 | 17600 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 17601 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 17602 | { |
d521ce57 | 17603 | const gdb_byte *result; |
bf6af496 | 17604 | |
3e225074 | 17605 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 17606 | |
b4f54984 | 17607 | if (dwarf_die_debug) |
bf6af496 DE |
17608 | { |
17609 | fprintf_unfiltered (gdb_stdlog, | |
17610 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17611 | reader->die_section->get_name (), |
bf6af496 DE |
17612 | (unsigned) (info_ptr - reader->die_section->buffer), |
17613 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17614 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17615 | } |
17616 | ||
17617 | return result; | |
3019eac3 | 17618 | } |
433df2d4 | 17619 | \f |
c906108c | 17620 | |
72bf9492 DJ |
17621 | /* Returns nonzero if TAG represents a type that we might generate a partial |
17622 | symbol for. */ | |
17623 | ||
17624 | static int | |
17625 | is_type_tag_for_partial (int tag) | |
17626 | { | |
17627 | switch (tag) | |
17628 | { | |
17629 | #if 0 | |
17630 | /* Some types that would be reasonable to generate partial symbols for, | |
17631 | that we don't at present. */ | |
17632 | case DW_TAG_array_type: | |
17633 | case DW_TAG_file_type: | |
17634 | case DW_TAG_ptr_to_member_type: | |
17635 | case DW_TAG_set_type: | |
17636 | case DW_TAG_string_type: | |
17637 | case DW_TAG_subroutine_type: | |
17638 | #endif | |
17639 | case DW_TAG_base_type: | |
17640 | case DW_TAG_class_type: | |
680b30c7 | 17641 | case DW_TAG_interface_type: |
72bf9492 DJ |
17642 | case DW_TAG_enumeration_type: |
17643 | case DW_TAG_structure_type: | |
17644 | case DW_TAG_subrange_type: | |
17645 | case DW_TAG_typedef: | |
17646 | case DW_TAG_union_type: | |
17647 | return 1; | |
17648 | default: | |
17649 | return 0; | |
17650 | } | |
17651 | } | |
17652 | ||
17653 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
17654 | ||
17655 | static struct partial_die_info * | |
dee91e82 | 17656 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 17657 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 17658 | { |
dee91e82 | 17659 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 17660 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 17661 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 17662 | unsigned int bytes_read; |
5afb4e99 | 17663 | unsigned int load_all = 0; |
72bf9492 DJ |
17664 | int nesting_level = 1; |
17665 | ||
17666 | parent_die = NULL; | |
17667 | last_die = NULL; | |
17668 | ||
7adf1e79 DE |
17669 | gdb_assert (cu->per_cu != NULL); |
17670 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
17671 | load_all = 1; |
17672 | ||
72bf9492 DJ |
17673 | cu->partial_dies |
17674 | = htab_create_alloc_ex (cu->header.length / 12, | |
17675 | partial_die_hash, | |
17676 | partial_die_eq, | |
17677 | NULL, | |
17678 | &cu->comp_unit_obstack, | |
17679 | hashtab_obstack_allocate, | |
17680 | dummy_obstack_deallocate); | |
17681 | ||
72bf9492 DJ |
17682 | while (1) |
17683 | { | |
685af9cd | 17684 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
17685 | |
17686 | /* A NULL abbrev means the end of a series of children. */ | |
17687 | if (abbrev == NULL) | |
17688 | { | |
17689 | if (--nesting_level == 0) | |
cd9983dd YQ |
17690 | return first_die; |
17691 | ||
72bf9492 DJ |
17692 | info_ptr += bytes_read; |
17693 | last_die = parent_die; | |
17694 | parent_die = parent_die->die_parent; | |
17695 | continue; | |
17696 | } | |
17697 | ||
98bfdba5 PA |
17698 | /* Check for template arguments. We never save these; if |
17699 | they're seen, we just mark the parent, and go on our way. */ | |
17700 | if (parent_die != NULL | |
17701 | && cu->language == language_cplus | |
17702 | && (abbrev->tag == DW_TAG_template_type_param | |
17703 | || abbrev->tag == DW_TAG_template_value_param)) | |
17704 | { | |
17705 | parent_die->has_template_arguments = 1; | |
17706 | ||
17707 | if (!load_all) | |
17708 | { | |
17709 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 17710 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17711 | continue; |
17712 | } | |
17713 | } | |
17714 | ||
0d99eb77 | 17715 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
17716 | Skip their other children. */ |
17717 | if (!load_all | |
17718 | && cu->language == language_cplus | |
17719 | && parent_die != NULL | |
17720 | && parent_die->tag == DW_TAG_subprogram) | |
17721 | { | |
dee91e82 | 17722 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17723 | continue; |
17724 | } | |
17725 | ||
5afb4e99 DJ |
17726 | /* Check whether this DIE is interesting enough to save. Normally |
17727 | we would not be interested in members here, but there may be | |
17728 | later variables referencing them via DW_AT_specification (for | |
17729 | static members). */ | |
17730 | if (!load_all | |
17731 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 17732 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
17733 | && abbrev->tag != DW_TAG_enumerator |
17734 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 17735 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 17736 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 17737 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 17738 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 17739 | && abbrev->tag != DW_TAG_module |
95554aad | 17740 | && abbrev->tag != DW_TAG_member |
74921315 KS |
17741 | && abbrev->tag != DW_TAG_imported_unit |
17742 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
17743 | { |
17744 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17745 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
17746 | continue; |
17747 | } | |
17748 | ||
6f06d47b YQ |
17749 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
17750 | abbrev); | |
cd9983dd | 17751 | |
48fbe735 | 17752 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
17753 | |
17754 | /* This two-pass algorithm for processing partial symbols has a | |
17755 | high cost in cache pressure. Thus, handle some simple cases | |
17756 | here which cover the majority of C partial symbols. DIEs | |
17757 | which neither have specification tags in them, nor could have | |
17758 | specification tags elsewhere pointing at them, can simply be | |
17759 | processed and discarded. | |
17760 | ||
17761 | This segment is also optional; scan_partial_symbols and | |
17762 | add_partial_symbol will handle these DIEs if we chain | |
17763 | them in normally. When compilers which do not emit large | |
17764 | quantities of duplicate debug information are more common, | |
17765 | this code can probably be removed. */ | |
17766 | ||
17767 | /* Any complete simple types at the top level (pretty much all | |
17768 | of them, for a language without namespaces), can be processed | |
17769 | directly. */ | |
17770 | if (parent_die == NULL | |
cd9983dd YQ |
17771 | && pdi.has_specification == 0 |
17772 | && pdi.is_declaration == 0 | |
17773 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
17774 | || pdi.tag == DW_TAG_base_type | |
17775 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 17776 | { |
cd9983dd | 17777 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 17778 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17779 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 17780 | psymbol_placement::STATIC, |
1762568f | 17781 | 0, cu->language, objfile); |
cd9983dd | 17782 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17783 | continue; |
17784 | } | |
17785 | ||
d8228535 JK |
17786 | /* The exception for DW_TAG_typedef with has_children above is |
17787 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 17788 | type_name_or_error will error on such types later. |
d8228535 JK |
17789 | |
17790 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
17791 | it could not find the child DIEs referenced later, this is checked | |
17792 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
17793 | ||
cd9983dd | 17794 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 17795 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 17796 | "- DIE at %s [in module %s]"), |
cd9983dd | 17797 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 17798 | |
72bf9492 DJ |
17799 | /* If we're at the second level, and we're an enumerator, and |
17800 | our parent has no specification (meaning possibly lives in a | |
17801 | namespace elsewhere), then we can add the partial symbol now | |
17802 | instead of queueing it. */ | |
cd9983dd | 17803 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
17804 | && parent_die != NULL |
17805 | && parent_die->die_parent == NULL | |
17806 | && parent_die->tag == DW_TAG_enumeration_type | |
17807 | && parent_die->has_specification == 0) | |
17808 | { | |
cd9983dd | 17809 | if (pdi.name == NULL) |
b98664d3 | 17810 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 17811 | else if (building_psymtab) |
31edb802 | 17812 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17813 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 17814 | cu->language == language_cplus |
75aedd27 TT |
17815 | ? psymbol_placement::GLOBAL |
17816 | : psymbol_placement::STATIC, | |
1762568f | 17817 | 0, cu->language, objfile); |
72bf9492 | 17818 | |
cd9983dd | 17819 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17820 | continue; |
17821 | } | |
17822 | ||
cd9983dd | 17823 | struct partial_die_info *part_die |
6f06d47b | 17824 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 17825 | |
72bf9492 DJ |
17826 | /* We'll save this DIE so link it in. */ |
17827 | part_die->die_parent = parent_die; | |
17828 | part_die->die_sibling = NULL; | |
17829 | part_die->die_child = NULL; | |
17830 | ||
17831 | if (last_die && last_die == parent_die) | |
17832 | last_die->die_child = part_die; | |
17833 | else if (last_die) | |
17834 | last_die->die_sibling = part_die; | |
17835 | ||
17836 | last_die = part_die; | |
17837 | ||
17838 | if (first_die == NULL) | |
17839 | first_die = part_die; | |
17840 | ||
17841 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
17842 | find interesting need to be in the hash table, because we | |
17843 | also have the parent/sibling/child chains; only those that we | |
17844 | might refer to by offset later during partial symbol reading. | |
17845 | ||
17846 | For now this means things that might have be the target of a | |
17847 | DW_AT_specification, DW_AT_abstract_origin, or | |
17848 | DW_AT_extension. DW_AT_extension will refer only to | |
17849 | namespaces; DW_AT_abstract_origin refers to functions (and | |
17850 | many things under the function DIE, but we do not recurse | |
17851 | into function DIEs during partial symbol reading) and | |
17852 | possibly variables as well; DW_AT_specification refers to | |
17853 | declarations. Declarations ought to have the DW_AT_declaration | |
17854 | flag. It happens that GCC forgets to put it in sometimes, but | |
17855 | only for functions, not for types. | |
17856 | ||
17857 | Adding more things than necessary to the hash table is harmless | |
17858 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
17859 | wasted time in find_partial_die, when we reread the compilation |
17860 | unit with load_all_dies set. */ | |
72bf9492 | 17861 | |
5afb4e99 | 17862 | if (load_all |
72929c62 | 17863 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 17864 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
17865 | || abbrev->tag == DW_TAG_variable |
17866 | || abbrev->tag == DW_TAG_namespace | |
17867 | || part_die->is_declaration) | |
17868 | { | |
17869 | void **slot; | |
17870 | ||
17871 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
17872 | to_underlying (part_die->sect_off), |
17873 | INSERT); | |
72bf9492 DJ |
17874 | *slot = part_die; |
17875 | } | |
17876 | ||
72bf9492 | 17877 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 17878 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
17879 | languages we have to, so that we can get at method physnames |
17880 | to infer fully qualified class names, for DW_AT_specification, | |
17881 | and for C++ template arguments. For C++, we also look one level | |
17882 | inside functions to find template arguments (if the name of the | |
17883 | function does not already contain the template arguments). | |
bc30ff58 | 17884 | |
0a4b0913 AB |
17885 | For Ada and Fortran, we need to scan the children of subprograms |
17886 | and lexical blocks as well because these languages allow the | |
17887 | definition of nested entities that could be interesting for the | |
17888 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 17889 | if (last_die->has_children |
5afb4e99 DJ |
17890 | && (load_all |
17891 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 17892 | || last_die->tag == DW_TAG_module |
72bf9492 | 17893 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
17894 | || (cu->language == language_cplus |
17895 | && last_die->tag == DW_TAG_subprogram | |
17896 | && (last_die->name == NULL | |
17897 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
17898 | || (cu->language != language_c |
17899 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 17900 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 17901 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 17902 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
17903 | || ((cu->language == language_ada |
17904 | || cu->language == language_fortran) | |
bc30ff58 JB |
17905 | && (last_die->tag == DW_TAG_subprogram |
17906 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
17907 | { |
17908 | nesting_level++; | |
17909 | parent_die = last_die; | |
17910 | continue; | |
17911 | } | |
17912 | ||
17913 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17914 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
17915 | |
17916 | /* Back to the top, do it again. */ | |
17917 | } | |
17918 | } | |
17919 | ||
6f06d47b YQ |
17920 | partial_die_info::partial_die_info (sect_offset sect_off_, |
17921 | struct abbrev_info *abbrev) | |
17922 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
17923 | { | |
17924 | } | |
17925 | ||
35cc7ed7 YQ |
17926 | /* Read a minimal amount of information into the minimal die structure. |
17927 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 17928 | |
48fbe735 YQ |
17929 | const gdb_byte * |
17930 | partial_die_info::read (const struct die_reader_specs *reader, | |
17931 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 17932 | { |
dee91e82 | 17933 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
17934 | struct dwarf2_per_objfile *dwarf2_per_objfile |
17935 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 17936 | unsigned int i; |
c5aa993b | 17937 | int has_low_pc_attr = 0; |
c906108c | 17938 | int has_high_pc_attr = 0; |
91da1414 | 17939 | int high_pc_relative = 0; |
c906108c | 17940 | |
fd0a254f | 17941 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 17942 | { |
e7da7f8f | 17943 | attribute attr; |
18a8505e | 17944 | bool need_reprocess; |
e7da7f8f | 17945 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
17946 | info_ptr, &need_reprocess); |
17947 | /* String and address offsets that need to do the reprocessing have | |
17948 | already been read at this point, so there is no need to wait until | |
17949 | the loop terminates to do the reprocessing. */ | |
17950 | if (need_reprocess) | |
e7da7f8f | 17951 | read_attribute_reprocess (reader, &attr); |
c906108c | 17952 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 17953 | partial symbol table. */ |
c906108c SS |
17954 | switch (attr.name) |
17955 | { | |
17956 | case DW_AT_name: | |
48fbe735 | 17957 | switch (tag) |
71c25dea TT |
17958 | { |
17959 | case DW_TAG_compile_unit: | |
95554aad | 17960 | case DW_TAG_partial_unit: |
348e048f | 17961 | case DW_TAG_type_unit: |
71c25dea TT |
17962 | /* Compilation units have a DW_AT_name that is a filename, not |
17963 | a source language identifier. */ | |
17964 | case DW_TAG_enumeration_type: | |
17965 | case DW_TAG_enumerator: | |
17966 | /* These tags always have simple identifiers already; no need | |
17967 | to canonicalize them. */ | |
48fbe735 | 17968 | name = DW_STRING (&attr); |
71c25dea TT |
17969 | break; |
17970 | default: | |
48fbe735 YQ |
17971 | { |
17972 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17973 | ||
17974 | name | |
be1e3d3e | 17975 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 17976 | } |
71c25dea TT |
17977 | break; |
17978 | } | |
c906108c | 17979 | break; |
31ef98ae | 17980 | case DW_AT_linkage_name: |
c906108c | 17981 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
17982 | /* Note that both forms of linkage name might appear. We |
17983 | assume they will be the same, and we only store the last | |
17984 | one we see. */ | |
48fbe735 | 17985 | linkage_name = DW_STRING (&attr); |
c906108c SS |
17986 | break; |
17987 | case DW_AT_low_pc: | |
17988 | has_low_pc_attr = 1; | |
cd6c91b4 | 17989 | lowpc = attr.value_as_address (); |
c906108c SS |
17990 | break; |
17991 | case DW_AT_high_pc: | |
17992 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
17993 | highpc = attr.value_as_address (); |
17994 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 17995 | high_pc_relative = 1; |
c906108c SS |
17996 | break; |
17997 | case DW_AT_location: | |
0963b4bd | 17998 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 17999 | if (attr.form_is_block ()) |
8e19ed76 | 18000 | { |
48fbe735 | 18001 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18002 | } |
cd6c91b4 | 18003 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18004 | { |
4d3c2250 | 18005 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18006 | } |
18007 | else | |
18008 | { | |
4d3c2250 KB |
18009 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18010 | "partial symbol information"); | |
8e19ed76 | 18011 | } |
c906108c | 18012 | break; |
c906108c | 18013 | case DW_AT_external: |
48fbe735 | 18014 | is_external = DW_UNSND (&attr); |
c906108c SS |
18015 | break; |
18016 | case DW_AT_declaration: | |
48fbe735 | 18017 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18018 | break; |
18019 | case DW_AT_type: | |
48fbe735 | 18020 | has_type = 1; |
c906108c SS |
18021 | break; |
18022 | case DW_AT_abstract_origin: | |
18023 | case DW_AT_specification: | |
72bf9492 | 18024 | case DW_AT_extension: |
48fbe735 | 18025 | has_specification = 1; |
0826b30a | 18026 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18027 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18028 | || cu->per_cu->is_dwz); |
c906108c SS |
18029 | break; |
18030 | case DW_AT_sibling: | |
18031 | /* Ignore absolute siblings, they might point outside of | |
18032 | the current compile unit. */ | |
18033 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18034 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18035 | else |
b9502d3f | 18036 | { |
48fbe735 | 18037 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18038 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18039 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18040 | |
18041 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18042 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18043 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18044 | reader->die_section->overflow_complaint (); |
b9502d3f | 18045 | else |
48fbe735 | 18046 | sibling = sibling_ptr; |
b9502d3f | 18047 | } |
c906108c | 18048 | break; |
fa4028e9 | 18049 | case DW_AT_byte_size: |
48fbe735 | 18050 | has_byte_size = 1; |
fa4028e9 | 18051 | break; |
ff908ebf | 18052 | case DW_AT_const_value: |
48fbe735 | 18053 | has_const_value = 1; |
ff908ebf | 18054 | break; |
68511cec CES |
18055 | case DW_AT_calling_convention: |
18056 | /* DWARF doesn't provide a way to identify a program's source-level | |
18057 | entry point. DW_AT_calling_convention attributes are only meant | |
18058 | to describe functions' calling conventions. | |
18059 | ||
18060 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18061 | Fortran, and before DWARF 4 DW_CC_program was the only |
18062 | piece of debugging information whose definition refers to | |
18063 | a 'main program' at all, several compilers marked Fortran | |
18064 | main programs with DW_CC_program --- even when those | |
18065 | functions use the standard calling conventions. | |
18066 | ||
18067 | Although DWARF now specifies a way to provide this | |
18068 | information, we support this practice for backward | |
18069 | compatibility. */ | |
68511cec | 18070 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18071 | && cu->language == language_fortran) |
48fbe735 | 18072 | main_subprogram = 1; |
68511cec | 18073 | break; |
481860b3 GB |
18074 | case DW_AT_inline: |
18075 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18076 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18077 | may_be_inlined = 1; |
481860b3 | 18078 | break; |
95554aad TT |
18079 | |
18080 | case DW_AT_import: | |
48fbe735 | 18081 | if (tag == DW_TAG_imported_unit) |
36586728 | 18082 | { |
0826b30a | 18083 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18084 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18085 | || cu->per_cu->is_dwz); |
18086 | } | |
95554aad TT |
18087 | break; |
18088 | ||
0c1b455e | 18089 | case DW_AT_main_subprogram: |
48fbe735 | 18090 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18091 | break; |
18092 | ||
05caa1d2 TT |
18093 | case DW_AT_ranges: |
18094 | { | |
18095 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18096 | but that requires a full DIE, so instead we just | |
18097 | reimplement it. */ | |
18098 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18099 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18100 | + (need_ranges_base | |
18101 | ? cu->ranges_base | |
18102 | : 0)); | |
18103 | ||
18104 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18105 | .debug_ranges section. */ | |
18106 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18107 | nullptr)) | |
18108 | has_pc_info = 1; | |
18109 | } | |
18110 | break; | |
18111 | ||
c906108c SS |
18112 | default: |
18113 | break; | |
18114 | } | |
18115 | } | |
18116 | ||
10d06d82 TT |
18117 | /* For Ada, if both the name and the linkage name appear, we prefer |
18118 | the latter. This lets "catch exception" work better, regardless | |
18119 | of the order in which the name and linkage name were emitted. | |
18120 | Really, though, this is just a workaround for the fact that gdb | |
18121 | doesn't store both the name and the linkage name. */ | |
18122 | if (cu->language == language_ada && linkage_name != nullptr) | |
18123 | name = linkage_name; | |
18124 | ||
91da1414 | 18125 | if (high_pc_relative) |
48fbe735 | 18126 | highpc += lowpc; |
91da1414 | 18127 | |
9373cf26 JK |
18128 | if (has_low_pc_attr && has_high_pc_attr) |
18129 | { | |
18130 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18131 | eliminate duplicate copies of functions and vtables and such. | |
18132 | The linker will arbitrarily choose one and discard the others. | |
18133 | The AT_*_pc values for such functions refer to local labels in | |
18134 | these sections. If the section from that file was discarded, the | |
18135 | labels are not in the output, so the relocs get a value of 0. | |
18136 | If this is a discarded function, mark the pc bounds as invalid, | |
18137 | so that GDB will ignore it. */ | |
48fbe735 | 18138 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18139 | { |
48fbe735 | 18140 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18141 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18142 | |
b98664d3 | 18143 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18144 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18145 | paddress (gdbarch, lowpc), |
18146 | sect_offset_str (sect_off), | |
9d8780f0 | 18147 | objfile_name (objfile)); |
9373cf26 JK |
18148 | } |
18149 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18150 | else if (lowpc >= highpc) |
9373cf26 | 18151 | { |
48fbe735 | 18152 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18153 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18154 | |
b98664d3 | 18155 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18156 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18157 | paddress (gdbarch, lowpc), |
18158 | paddress (gdbarch, highpc), | |
18159 | sect_offset_str (sect_off), | |
9c541725 | 18160 | objfile_name (objfile)); |
9373cf26 JK |
18161 | } |
18162 | else | |
48fbe735 | 18163 | has_pc_info = 1; |
9373cf26 | 18164 | } |
85cbf3d3 | 18165 | |
c906108c SS |
18166 | return info_ptr; |
18167 | } | |
18168 | ||
72bf9492 DJ |
18169 | /* Find a cached partial DIE at OFFSET in CU. */ |
18170 | ||
d590ff25 YQ |
18171 | struct partial_die_info * |
18172 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18173 | { |
18174 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18175 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18176 | |
9a3c8263 | 18177 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18178 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18179 | to_underlying (sect_off))); |
72bf9492 | 18180 | |
72bf9492 DJ |
18181 | return lookup_die; |
18182 | } | |
18183 | ||
348e048f DE |
18184 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18185 | except in the case of .debug_types DIEs which do not reference | |
18186 | outside their CU (they do however referencing other types via | |
55f1336d | 18187 | DW_FORM_ref_sig8). */ |
72bf9492 | 18188 | |
122cf0f2 | 18189 | static const struct cu_partial_die_info |
9c541725 | 18190 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18191 | { |
518817b3 SM |
18192 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18193 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18194 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18195 | struct dwarf2_per_cu_data *per_cu = NULL; |
18196 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18197 | |
36586728 | 18198 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18199 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18200 | { |
d590ff25 | 18201 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18202 | if (pd != NULL) |
fb816e8b | 18203 | return { cu, pd }; |
0d99eb77 DE |
18204 | /* We missed recording what we needed. |
18205 | Load all dies and try again. */ | |
18206 | per_cu = cu->per_cu; | |
5afb4e99 | 18207 | } |
0d99eb77 DE |
18208 | else |
18209 | { | |
18210 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18211 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18212 | { |
9d8780f0 SM |
18213 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18214 | " external reference to offset %s [in module %s].\n"), | |
18215 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18216 | bfd_get_filename (objfile->obfd)); |
18217 | } | |
9c541725 | 18218 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18219 | dwarf2_per_objfile); |
72bf9492 | 18220 | |
0d99eb77 DE |
18221 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18222 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18223 | |
0d99eb77 | 18224 | per_cu->cu->last_used = 0; |
d590ff25 | 18225 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18226 | } |
5afb4e99 | 18227 | |
dee91e82 DE |
18228 | /* If we didn't find it, and not all dies have been loaded, |
18229 | load them all and try again. */ | |
18230 | ||
5afb4e99 DJ |
18231 | if (pd == NULL && per_cu->load_all_dies == 0) |
18232 | { | |
5afb4e99 | 18233 | per_cu->load_all_dies = 1; |
fd820528 DE |
18234 | |
18235 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18236 | THIS_CU->cu may already be in use. So we can't just free it and | |
18237 | replace its DIEs with the ones we read in. Instead, we leave those | |
18238 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18239 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18240 | set. */ | |
dee91e82 | 18241 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18242 | |
d590ff25 | 18243 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18244 | } |
18245 | ||
18246 | if (pd == NULL) | |
18247 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18248 | _("could not find partial DIE %s " |
3e43a32a | 18249 | "in cache [from module %s]\n"), |
9d8780f0 | 18250 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18251 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18252 | } |
18253 | ||
abc72ce4 DE |
18254 | /* See if we can figure out if the class lives in a namespace. We do |
18255 | this by looking for a member function; its demangled name will | |
18256 | contain namespace info, if there is any. */ | |
18257 | ||
18258 | static void | |
18259 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18260 | struct dwarf2_cu *cu) | |
18261 | { | |
18262 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18263 | what template types look like, because the demangler | |
18264 | frequently doesn't give the same name as the debug info. We | |
18265 | could fix this by only using the demangled name to get the | |
18266 | prefix (but see comment in read_structure_type). */ | |
18267 | ||
18268 | struct partial_die_info *real_pdi; | |
18269 | struct partial_die_info *child_pdi; | |
18270 | ||
18271 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18272 | we should not do this. We'll prepend the parent's fully qualified | |
18273 | name when we create the partial symbol. */ | |
18274 | ||
18275 | real_pdi = struct_pdi; | |
18276 | while (real_pdi->has_specification) | |
fb816e8b | 18277 | { |
122cf0f2 AB |
18278 | auto res = find_partial_die (real_pdi->spec_offset, |
18279 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18280 | real_pdi = res.pdi; |
18281 | cu = res.cu; | |
18282 | } | |
abc72ce4 DE |
18283 | |
18284 | if (real_pdi->die_parent != NULL) | |
18285 | return; | |
18286 | ||
18287 | for (child_pdi = struct_pdi->die_child; | |
18288 | child_pdi != NULL; | |
18289 | child_pdi = child_pdi->die_sibling) | |
18290 | { | |
18291 | if (child_pdi->tag == DW_TAG_subprogram | |
18292 | && child_pdi->linkage_name != NULL) | |
18293 | { | |
43816ebc TT |
18294 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18295 | (language_class_name_from_physname (cu->language_defn, | |
18296 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18297 | if (actual_class_name != NULL) |
18298 | { | |
518817b3 | 18299 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18300 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18301 | } |
18302 | break; | |
18303 | } | |
18304 | } | |
18305 | } | |
18306 | ||
25c11aca TV |
18307 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18308 | attribute. */ | |
18309 | ||
18310 | static bool | |
18311 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18312 | { | |
18313 | switch (tag) | |
18314 | { | |
18315 | case DW_TAG_constant: | |
18316 | case DW_TAG_enumerator: | |
18317 | case DW_TAG_formal_parameter: | |
18318 | case DW_TAG_template_value_param: | |
18319 | case DW_TAG_variable: | |
18320 | return true; | |
18321 | } | |
18322 | ||
18323 | return false; | |
18324 | } | |
18325 | ||
52356b79 YQ |
18326 | void |
18327 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18328 | { |
abc72ce4 DE |
18329 | /* Once we've fixed up a die, there's no point in doing so again. |
18330 | This also avoids a memory leak if we were to call | |
18331 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18332 | if (fixup_called) |
abc72ce4 DE |
18333 | return; |
18334 | ||
72bf9492 DJ |
18335 | /* If we found a reference attribute and the DIE has no name, try |
18336 | to find a name in the referred to DIE. */ | |
18337 | ||
52356b79 | 18338 | if (name == NULL && has_specification) |
72bf9492 DJ |
18339 | { |
18340 | struct partial_die_info *spec_die; | |
72bf9492 | 18341 | |
122cf0f2 | 18342 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18343 | spec_die = res.pdi; |
18344 | cu = res.cu; | |
72bf9492 | 18345 | |
52356b79 | 18346 | spec_die->fixup (cu); |
72bf9492 DJ |
18347 | |
18348 | if (spec_die->name) | |
18349 | { | |
52356b79 | 18350 | name = spec_die->name; |
72bf9492 DJ |
18351 | |
18352 | /* Copy DW_AT_external attribute if it is set. */ | |
18353 | if (spec_die->is_external) | |
52356b79 | 18354 | is_external = spec_die->is_external; |
72bf9492 DJ |
18355 | } |
18356 | } | |
18357 | ||
25c11aca TV |
18358 | if (!has_const_value && has_specification |
18359 | && can_have_DW_AT_const_value_p (tag)) | |
18360 | { | |
18361 | struct partial_die_info *spec_die; | |
18362 | ||
18363 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18364 | spec_die = res.pdi; | |
18365 | cu = res.cu; | |
18366 | ||
18367 | spec_die->fixup (cu); | |
18368 | ||
18369 | if (spec_die->has_const_value) | |
18370 | { | |
18371 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18372 | has_const_value = spec_die->has_const_value; | |
18373 | } | |
18374 | } | |
18375 | ||
72bf9492 | 18376 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18377 | |
52356b79 YQ |
18378 | if (name == NULL && tag == DW_TAG_namespace) |
18379 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18380 | |
abc72ce4 DE |
18381 | /* If there is no parent die to provide a namespace, and there are |
18382 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18383 | name. */ |
abc72ce4 | 18384 | if (cu->language == language_cplus |
fd5866f6 | 18385 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18386 | && die_parent == NULL |
18387 | && has_children | |
18388 | && (tag == DW_TAG_class_type | |
18389 | || tag == DW_TAG_structure_type | |
18390 | || tag == DW_TAG_union_type)) | |
18391 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18392 | |
53832f31 TT |
18393 | /* GCC might emit a nameless struct or union that has a linkage |
18394 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18395 | if (name == NULL |
18396 | && (tag == DW_TAG_class_type | |
18397 | || tag == DW_TAG_interface_type | |
18398 | || tag == DW_TAG_structure_type | |
18399 | || tag == DW_TAG_union_type) | |
18400 | && linkage_name != NULL) | |
53832f31 | 18401 | { |
43816ebc TT |
18402 | gdb::unique_xmalloc_ptr<char> demangled |
18403 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18404 | if (demangled != nullptr) | |
53832f31 | 18405 | { |
96408a79 SA |
18406 | const char *base; |
18407 | ||
18408 | /* Strip any leading namespaces/classes, keep only the base name. | |
18409 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18410 | base = strrchr (demangled.get (), ':'); |
18411 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18412 | base++; |
18413 | else | |
43816ebc | 18414 | base = demangled.get (); |
96408a79 | 18415 | |
518817b3 | 18416 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18417 | name = objfile->intern (base); |
53832f31 TT |
18418 | } |
18419 | } | |
18420 | ||
52356b79 | 18421 | fixup_called = 1; |
72bf9492 DJ |
18422 | } |
18423 | ||
41144253 | 18424 | /* Read the .debug_loclists header contents from the given SECTION in the |
18425 | HEADER. */ | |
18426 | static void | |
18427 | read_loclist_header (struct loclist_header *header, | |
18428 | struct dwarf2_section_info *section) | |
18429 | { | |
18430 | unsigned int bytes_read; | |
18431 | bfd *abfd = section->get_bfd_owner (); | |
18432 | const gdb_byte *info_ptr = section->buffer; | |
18433 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
18434 | info_ptr += bytes_read; | |
18435 | header->version = read_2_bytes (abfd, info_ptr); | |
18436 | info_ptr += 2; | |
18437 | header->addr_size = read_1_byte (abfd, info_ptr); | |
18438 | info_ptr += 1; | |
18439 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
18440 | info_ptr += 1; | |
18441 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
18442 | } | |
18443 | ||
18444 | /* Return the DW_AT_loclists_base value for the CU. */ | |
18445 | static ULONGEST | |
18446 | lookup_loclist_base (struct dwarf2_cu *cu) | |
18447 | { | |
18448 | /* For the .dwo unit, the loclist_base points to the first offset following | |
18449 | the header. The header consists of the following entities- | |
18450 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
18451 | bit format) | |
18452 | 2. version (2 bytes) | |
18453 | 3. address size (1 byte) | |
18454 | 4. segment selector size (1 byte) | |
18455 | 5. offset entry count (4 bytes) | |
18456 | These sizes are derived as per the DWARFv5 standard. */ | |
18457 | if (cu->dwo_unit != nullptr) | |
18458 | { | |
18459 | if (cu->header.initial_length_size == 4) | |
18460 | return LOCLIST_HEADER_SIZE32; | |
18461 | return LOCLIST_HEADER_SIZE64; | |
18462 | } | |
18463 | return cu->loclist_base; | |
18464 | } | |
18465 | ||
18466 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
18467 | array of offsets in the .debug_loclists section. */ | |
18468 | static CORE_ADDR | |
18469 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
18470 | { | |
18471 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
18472 | = cu->per_cu->dwarf2_per_objfile; | |
18473 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18474 | bfd *abfd = objfile->obfd; | |
18475 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
18476 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
18477 | ||
18478 | section->read (objfile); | |
18479 | if (section->buffer == NULL) | |
18480 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
18481 | "section [in module %s]"), objfile_name (objfile)); | |
18482 | struct loclist_header header; | |
18483 | read_loclist_header (&header, section); | |
18484 | if (loclist_index >= header.offset_entry_count) | |
18485 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18486 | ".debug_loclists offset array [in module %s]"), | |
18487 | objfile_name (objfile)); | |
18488 | if (loclist_base + loclist_index * cu->header.offset_size | |
18489 | >= section->size) | |
18490 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18491 | ".debug_loclists section [in module %s]"), | |
18492 | objfile_name (objfile)); | |
18493 | const gdb_byte *info_ptr | |
18494 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
18495 | ||
18496 | if (cu->header.offset_size == 4) | |
18497 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
18498 | else | |
18499 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
18500 | } | |
18501 | ||
18a8505e AT |
18502 | /* Process the attributes that had to be skipped in the first round. These |
18503 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18504 | They could not have been processed in the first round, because at the time | |
18505 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
18506 | static void |
18507 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
18508 | struct attribute *attr) | |
18a8505e AT |
18509 | { |
18510 | struct dwarf2_cu *cu = reader->cu; | |
18511 | switch (attr->form) | |
18512 | { | |
18513 | case DW_FORM_addrx: | |
18514 | case DW_FORM_GNU_addr_index: | |
18515 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18516 | break; | |
41144253 | 18517 | case DW_FORM_loclistx: |
18518 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
18519 | break; | |
18a8505e AT |
18520 | case DW_FORM_strx: |
18521 | case DW_FORM_strx1: | |
18522 | case DW_FORM_strx2: | |
18523 | case DW_FORM_strx3: | |
18524 | case DW_FORM_strx4: | |
18525 | case DW_FORM_GNU_str_index: | |
18526 | { | |
18527 | unsigned int str_index = DW_UNSND (attr); | |
18528 | if (reader->dwo_file != NULL) | |
18529 | { | |
18530 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18531 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18532 | } | |
18533 | else | |
18534 | { | |
18535 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18536 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18537 | } | |
18538 | break; | |
18539 | } | |
18540 | default: | |
18541 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18542 | } | |
18543 | } | |
18544 | ||
a8329558 | 18545 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18546 | |
d521ce57 | 18547 | static const gdb_byte * |
dee91e82 DE |
18548 | read_attribute_value (const struct die_reader_specs *reader, |
18549 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18550 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18551 | bool *need_reprocess) | |
c906108c | 18552 | { |
dee91e82 | 18553 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18554 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18555 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18556 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18557 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18558 | bfd *abfd = reader->abfd; |
e7c27a73 | 18559 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18560 | unsigned int bytes_read; |
18561 | struct dwarf_block *blk; | |
18a8505e | 18562 | *need_reprocess = false; |
c906108c | 18563 | |
aead7601 | 18564 | attr->form = (enum dwarf_form) form; |
a8329558 | 18565 | switch (form) |
c906108c | 18566 | { |
c906108c | 18567 | case DW_FORM_ref_addr: |
ae411497 | 18568 | if (cu->header.version == 2) |
c8a7a66f TT |
18569 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
18570 | &bytes_read); | |
ae411497 | 18571 | else |
8266302d TT |
18572 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
18573 | &bytes_read); | |
ae411497 TT |
18574 | info_ptr += bytes_read; |
18575 | break; | |
36586728 | 18576 | case DW_FORM_GNU_ref_alt: |
8266302d | 18577 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
18578 | info_ptr += bytes_read; |
18579 | break; | |
ae411497 | 18580 | case DW_FORM_addr: |
c8a7a66f | 18581 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); |
3e29f34a | 18582 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18583 | info_ptr += bytes_read; |
c906108c SS |
18584 | break; |
18585 | case DW_FORM_block2: | |
7b5a2f43 | 18586 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18587 | blk->size = read_2_bytes (abfd, info_ptr); |
18588 | info_ptr += 2; | |
18589 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18590 | info_ptr += blk->size; | |
18591 | DW_BLOCK (attr) = blk; | |
18592 | break; | |
18593 | case DW_FORM_block4: | |
7b5a2f43 | 18594 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18595 | blk->size = read_4_bytes (abfd, info_ptr); |
18596 | info_ptr += 4; | |
18597 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18598 | info_ptr += blk->size; | |
18599 | DW_BLOCK (attr) = blk; | |
18600 | break; | |
18601 | case DW_FORM_data2: | |
18602 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18603 | info_ptr += 2; | |
18604 | break; | |
18605 | case DW_FORM_data4: | |
18606 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18607 | info_ptr += 4; | |
18608 | break; | |
18609 | case DW_FORM_data8: | |
18610 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18611 | info_ptr += 8; | |
18612 | break; | |
0224619f JK |
18613 | case DW_FORM_data16: |
18614 | blk = dwarf_alloc_block (cu); | |
18615 | blk->size = 16; | |
18616 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18617 | info_ptr += 16; | |
18618 | DW_BLOCK (attr) = blk; | |
18619 | break; | |
2dc7f7b3 | 18620 | case DW_FORM_sec_offset: |
8266302d | 18621 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
18622 | info_ptr += bytes_read; |
18623 | break; | |
41144253 | 18624 | case DW_FORM_loclistx: |
18625 | { | |
18626 | *need_reprocess = true; | |
18627 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18628 | info_ptr += bytes_read; | |
18629 | } | |
18630 | break; | |
c906108c | 18631 | case DW_FORM_string: |
9b1c24c8 | 18632 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18633 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18634 | info_ptr += bytes_read; |
18635 | break; | |
4bdf3d34 | 18636 | case DW_FORM_strp: |
36586728 TT |
18637 | if (!cu->per_cu->is_dwz) |
18638 | { | |
ed2dc618 SM |
18639 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18640 | abfd, info_ptr, cu_header, | |
36586728 TT |
18641 | &bytes_read); |
18642 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18643 | info_ptr += bytes_read; | |
18644 | break; | |
18645 | } | |
18646 | /* FALLTHROUGH */ | |
43988095 JK |
18647 | case DW_FORM_line_strp: |
18648 | if (!cu->per_cu->is_dwz) | |
18649 | { | |
86c0bb4c TT |
18650 | DW_STRING (attr) |
18651 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
18652 | &bytes_read); | |
43988095 JK |
18653 | DW_STRING_IS_CANONICAL (attr) = 0; |
18654 | info_ptr += bytes_read; | |
18655 | break; | |
18656 | } | |
18657 | /* FALLTHROUGH */ | |
36586728 TT |
18658 | case DW_FORM_GNU_strp_alt: |
18659 | { | |
ed2dc618 | 18660 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
8266302d TT |
18661 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
18662 | &bytes_read); | |
36586728 | 18663 | |
0314b390 | 18664 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
18665 | DW_STRING_IS_CANONICAL (attr) = 0; |
18666 | info_ptr += bytes_read; | |
18667 | } | |
4bdf3d34 | 18668 | break; |
2dc7f7b3 | 18669 | case DW_FORM_exprloc: |
c906108c | 18670 | case DW_FORM_block: |
7b5a2f43 | 18671 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18672 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18673 | info_ptr += bytes_read; | |
18674 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18675 | info_ptr += blk->size; | |
18676 | DW_BLOCK (attr) = blk; | |
18677 | break; | |
18678 | case DW_FORM_block1: | |
7b5a2f43 | 18679 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18680 | blk->size = read_1_byte (abfd, info_ptr); |
18681 | info_ptr += 1; | |
18682 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18683 | info_ptr += blk->size; | |
18684 | DW_BLOCK (attr) = blk; | |
18685 | break; | |
18686 | case DW_FORM_data1: | |
18687 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18688 | info_ptr += 1; | |
18689 | break; | |
18690 | case DW_FORM_flag: | |
18691 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18692 | info_ptr += 1; | |
18693 | break; | |
2dc7f7b3 TT |
18694 | case DW_FORM_flag_present: |
18695 | DW_UNSND (attr) = 1; | |
18696 | break; | |
c906108c SS |
18697 | case DW_FORM_sdata: |
18698 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18699 | info_ptr += bytes_read; | |
18700 | break; | |
18701 | case DW_FORM_udata: | |
18a8505e | 18702 | case DW_FORM_rnglistx: |
c906108c SS |
18703 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18704 | info_ptr += bytes_read; | |
18705 | break; | |
18706 | case DW_FORM_ref1: | |
9c541725 | 18707 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18708 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
18709 | info_ptr += 1; |
18710 | break; | |
18711 | case DW_FORM_ref2: | |
9c541725 | 18712 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18713 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
18714 | info_ptr += 2; |
18715 | break; | |
18716 | case DW_FORM_ref4: | |
9c541725 | 18717 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18718 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
18719 | info_ptr += 4; |
18720 | break; | |
613e1657 | 18721 | case DW_FORM_ref8: |
9c541725 | 18722 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18723 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
18724 | info_ptr += 8; |
18725 | break; | |
55f1336d | 18726 | case DW_FORM_ref_sig8: |
ac9ec31b | 18727 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
18728 | info_ptr += 8; |
18729 | break; | |
c906108c | 18730 | case DW_FORM_ref_udata: |
9c541725 | 18731 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18732 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
18733 | info_ptr += bytes_read; |
18734 | break; | |
c906108c | 18735 | case DW_FORM_indirect: |
a8329558 KW |
18736 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18737 | info_ptr += bytes_read; | |
43988095 JK |
18738 | if (form == DW_FORM_implicit_const) |
18739 | { | |
18740 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18741 | info_ptr += bytes_read; | |
18742 | } | |
18743 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 18744 | info_ptr, need_reprocess); |
43988095 JK |
18745 | break; |
18746 | case DW_FORM_implicit_const: | |
18747 | DW_SND (attr) = implicit_const; | |
a8329558 | 18748 | break; |
336d760d | 18749 | case DW_FORM_addrx: |
3019eac3 | 18750 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
18751 | *need_reprocess = true; |
18752 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
18753 | info_ptr += bytes_read; |
18754 | break; | |
cf532bd1 | 18755 | case DW_FORM_strx: |
15f18d14 AT |
18756 | case DW_FORM_strx1: |
18757 | case DW_FORM_strx2: | |
18758 | case DW_FORM_strx3: | |
18759 | case DW_FORM_strx4: | |
3019eac3 | 18760 | case DW_FORM_GNU_str_index: |
3019eac3 | 18761 | { |
15f18d14 AT |
18762 | ULONGEST str_index; |
18763 | if (form == DW_FORM_strx1) | |
18764 | { | |
18765 | str_index = read_1_byte (abfd, info_ptr); | |
18766 | info_ptr += 1; | |
18767 | } | |
18768 | else if (form == DW_FORM_strx2) | |
18769 | { | |
18770 | str_index = read_2_bytes (abfd, info_ptr); | |
18771 | info_ptr += 2; | |
18772 | } | |
18773 | else if (form == DW_FORM_strx3) | |
18774 | { | |
18775 | str_index = read_3_bytes (abfd, info_ptr); | |
18776 | info_ptr += 3; | |
18777 | } | |
18778 | else if (form == DW_FORM_strx4) | |
18779 | { | |
18780 | str_index = read_4_bytes (abfd, info_ptr); | |
18781 | info_ptr += 4; | |
18782 | } | |
18783 | else | |
18784 | { | |
18785 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18786 | info_ptr += bytes_read; | |
18787 | } | |
18a8505e AT |
18788 | *need_reprocess = true; |
18789 | DW_UNSND (attr) = str_index; | |
18790 | } | |
3019eac3 | 18791 | break; |
c906108c | 18792 | default: |
8a3fe4f8 | 18793 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
18794 | dwarf_form_name (form), |
18795 | bfd_get_filename (abfd)); | |
c906108c | 18796 | } |
28e94949 | 18797 | |
36586728 | 18798 | /* Super hack. */ |
cd6c91b4 | 18799 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
18800 | attr->form = DW_FORM_GNU_ref_alt; |
18801 | ||
28e94949 JB |
18802 | /* We have seen instances where the compiler tried to emit a byte |
18803 | size attribute of -1 which ended up being encoded as an unsigned | |
18804 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
18805 | an object of this size seems pretty unlikely so we can relatively | |
18806 | safely treat these cases as if the size attribute was invalid and | |
18807 | treat them as zero by default. */ | |
18808 | if (attr->name == DW_AT_byte_size | |
18809 | && form == DW_FORM_data4 | |
18810 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
18811 | { |
18812 | complaint | |
b98664d3 | 18813 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 18814 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
18815 | DW_UNSND (attr) = 0; |
18816 | } | |
28e94949 | 18817 | |
c906108c SS |
18818 | return info_ptr; |
18819 | } | |
18820 | ||
a8329558 KW |
18821 | /* Read an attribute described by an abbreviated attribute. */ |
18822 | ||
d521ce57 | 18823 | static const gdb_byte * |
dee91e82 DE |
18824 | read_attribute (const struct die_reader_specs *reader, |
18825 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 18826 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
18827 | { |
18828 | attr->name = abbrev->name; | |
43988095 | 18829 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
18830 | abbrev->implicit_const, info_ptr, |
18831 | need_reprocess); | |
a8329558 KW |
18832 | } |
18833 | ||
43988095 JK |
18834 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
18835 | ||
18836 | static const char * | |
ed2dc618 | 18837 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 18838 | LONGEST str_offset) |
43988095 | 18839 | { |
4f44ae6c TT |
18840 | return dwarf2_per_objfile->str.read_string (dwarf2_per_objfile->objfile, |
18841 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
18842 | } |
18843 | ||
43988095 JK |
18844 | /* Return pointer to string at .debug_str offset as read from BUF. |
18845 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
18846 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
18847 | ||
d521ce57 | 18848 | static const char * |
ed2dc618 SM |
18849 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
18850 | const gdb_byte *buf, | |
cf2c3c16 TT |
18851 | const struct comp_unit_head *cu_header, |
18852 | unsigned int *bytes_read_ptr) | |
18853 | { | |
8266302d | 18854 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 18855 | |
4f44ae6c | 18856 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
18857 | } |
18858 | ||
86c0bb4c | 18859 | /* See read.h. */ |
43988095 | 18860 | |
86c0bb4c TT |
18861 | const char * |
18862 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
43988095 JK |
18863 | const struct comp_unit_head *cu_header, |
18864 | unsigned int *bytes_read_ptr) | |
18865 | { | |
86c0bb4c | 18866 | bfd *abfd = objfile->obfd; |
8266302d | 18867 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 18868 | |
86c0bb4c | 18869 | return line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
18870 | } |
18871 | ||
3019eac3 | 18872 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 18873 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
18874 | ADDR_SIZE is the size of addresses from the CU header. */ |
18875 | ||
18876 | static CORE_ADDR | |
ed2dc618 | 18877 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
18878 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
18879 | int addr_size) | |
3019eac3 DE |
18880 | { |
18881 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18882 | bfd *abfd = objfile->obfd; | |
18883 | const gdb_byte *info_ptr; | |
18a8505e | 18884 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 18885 | |
96b79293 | 18886 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
18887 | if (dwarf2_per_objfile->addr.buffer == NULL) |
18888 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 18889 | objfile_name (objfile)); |
18a8505e AT |
18890 | if (addr_base_or_zero + addr_index * addr_size |
18891 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
18892 | error (_("DW_FORM_addr_index pointing outside of " |
18893 | ".debug_addr section [in module %s]"), | |
4262abfb | 18894 | objfile_name (objfile)); |
3019eac3 | 18895 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 18896 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
18897 | if (addr_size == 4) |
18898 | return bfd_get_32 (abfd, info_ptr); | |
18899 | else | |
18900 | return bfd_get_64 (abfd, info_ptr); | |
18901 | } | |
18902 | ||
18903 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
18904 | ||
18905 | static CORE_ADDR | |
18906 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
18907 | { | |
518817b3 SM |
18908 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
18909 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
18910 | } |
18911 | ||
18912 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
18913 | ||
18914 | static CORE_ADDR | |
d521ce57 | 18915 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
18916 | unsigned int *bytes_read) |
18917 | { | |
518817b3 | 18918 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
18919 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
18920 | ||
18921 | return read_addr_index (cu, addr_index); | |
18922 | } | |
18923 | ||
450a1bfc | 18924 | /* See read.h. */ |
3019eac3 DE |
18925 | |
18926 | CORE_ADDR | |
450a1bfc | 18927 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index) |
3019eac3 | 18928 | { |
ed2dc618 | 18929 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 18930 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 18931 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
18932 | int addr_size; |
18933 | ||
3019eac3 DE |
18934 | /* We need addr_base and addr_size. |
18935 | If we don't have PER_CU->cu, we have to get it. | |
18936 | Nasty, but the alternative is storing the needed info in PER_CU, | |
18937 | which at this point doesn't seem justified: it's not clear how frequently | |
18938 | it would get used and it would increase the size of every PER_CU. | |
18939 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
18940 | so we're not in uncharted territory here. | |
18941 | Alas we need to be a bit more complicated as addr_base is contained | |
18942 | in the DIE. | |
18943 | ||
18944 | We don't need to read the entire CU(/TU). | |
18945 | We just need the header and top level die. | |
a1b64ce1 | 18946 | |
3019eac3 | 18947 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 18948 | For now we skip this optimization. */ |
3019eac3 DE |
18949 | |
18950 | if (cu != NULL) | |
18951 | { | |
18952 | addr_base = cu->addr_base; | |
18953 | addr_size = cu->header.addr_size; | |
18954 | } | |
18955 | else | |
18956 | { | |
6751ebae | 18957 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
18958 | addr_base = reader.cu->addr_base; |
18959 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
18960 | } |
18961 | ||
ed2dc618 SM |
18962 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
18963 | addr_size); | |
3019eac3 DE |
18964 | } |
18965 | ||
18a8505e AT |
18966 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
18967 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
18968 | DWO file. */ | |
3019eac3 | 18969 | |
d521ce57 | 18970 | static const char * |
18a8505e AT |
18971 | read_str_index (struct dwarf2_cu *cu, |
18972 | struct dwarf2_section_info *str_section, | |
18973 | struct dwarf2_section_info *str_offsets_section, | |
18974 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 18975 | { |
518817b3 SM |
18976 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18977 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 18978 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 18979 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 18980 | bfd *abfd = objfile->obfd; |
d521ce57 | 18981 | const gdb_byte *info_ptr; |
3019eac3 | 18982 | ULONGEST str_offset; |
cf532bd1 | 18983 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 18984 | |
96b79293 TT |
18985 | str_section->read (objfile); |
18986 | str_offsets_section->read (objfile); | |
73869dc2 | 18987 | if (str_section->buffer == NULL) |
18a8505e | 18988 | error (_("%s used without %s section" |
9d8780f0 | 18989 | " in CU at offset %s [in module %s]"), |
96b79293 | 18990 | form_name, str_section->get_name (), |
18a8505e | 18991 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18992 | if (str_offsets_section->buffer == NULL) |
18a8505e | 18993 | error (_("%s used without %s section" |
9d8780f0 | 18994 | " in CU at offset %s [in module %s]"), |
96b79293 | 18995 | form_name, str_section->get_name (), |
18a8505e | 18996 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18997 | info_ptr = (str_offsets_section->buffer |
18a8505e | 18998 | + str_offsets_base |
3019eac3 DE |
18999 | + str_index * cu->header.offset_size); |
19000 | if (cu->header.offset_size == 4) | |
19001 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19002 | else | |
19003 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19004 | if (str_offset >= str_section->size) |
57d63ce2 | 19005 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19006 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19007 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19008 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19009 | } |
19010 | ||
18a8505e AT |
19011 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19012 | ||
19013 | static const char * | |
19014 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19015 | { | |
19016 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19017 | ? reader->cu->header.addr_size : 0; | |
19018 | return read_str_index (reader->cu, | |
19019 | &reader->dwo_file->sections.str, | |
19020 | &reader->dwo_file->sections.str_offsets, | |
19021 | str_offsets_base, str_index); | |
19022 | } | |
19023 | ||
19024 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19025 | ||
19026 | static const char * | |
19027 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19028 | { | |
19029 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
19030 | const char *objf_name = objfile_name (objfile); | |
19031 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19032 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19033 | ||
19034 | if (!cu->str_offsets_base.has_value ()) | |
19035 | error (_("%s used in Fission stub without %s" | |
19036 | " in CU at offset 0x%lx [in module %s]"), | |
19037 | form_name, str_offsets_attr_name, | |
19038 | (long) cu->header.offset_size, objf_name); | |
19039 | ||
19040 | return read_str_index (cu, | |
19041 | &cu->per_cu->dwarf2_per_objfile->str, | |
19042 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
19043 | *cu->str_offsets_base, str_index); | |
19044 | } | |
19045 | ||
3019eac3 DE |
19046 | /* Return the length of an LEB128 number in BUF. */ |
19047 | ||
19048 | static int | |
19049 | leb128_size (const gdb_byte *buf) | |
19050 | { | |
19051 | const gdb_byte *begin = buf; | |
19052 | gdb_byte byte; | |
19053 | ||
19054 | while (1) | |
19055 | { | |
19056 | byte = *buf++; | |
19057 | if ((byte & 128) == 0) | |
19058 | return buf - begin; | |
19059 | } | |
19060 | } | |
19061 | ||
c906108c | 19062 | static void |
e142c38c | 19063 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19064 | { |
19065 | switch (lang) | |
19066 | { | |
19067 | case DW_LANG_C89: | |
76bee0cc | 19068 | case DW_LANG_C99: |
0cfd832f | 19069 | case DW_LANG_C11: |
c906108c | 19070 | case DW_LANG_C: |
d1be3247 | 19071 | case DW_LANG_UPC: |
e142c38c | 19072 | cu->language = language_c; |
c906108c | 19073 | break; |
9c37b5ae | 19074 | case DW_LANG_Java: |
c906108c | 19075 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19076 | case DW_LANG_C_plus_plus_11: |
19077 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19078 | cu->language = language_cplus; |
c906108c | 19079 | break; |
6aecb9c2 JB |
19080 | case DW_LANG_D: |
19081 | cu->language = language_d; | |
19082 | break; | |
c906108c SS |
19083 | case DW_LANG_Fortran77: |
19084 | case DW_LANG_Fortran90: | |
b21b22e0 | 19085 | case DW_LANG_Fortran95: |
f7de9aab MW |
19086 | case DW_LANG_Fortran03: |
19087 | case DW_LANG_Fortran08: | |
e142c38c | 19088 | cu->language = language_fortran; |
c906108c | 19089 | break; |
a766d390 DE |
19090 | case DW_LANG_Go: |
19091 | cu->language = language_go; | |
19092 | break; | |
c906108c | 19093 | case DW_LANG_Mips_Assembler: |
e142c38c | 19094 | cu->language = language_asm; |
c906108c SS |
19095 | break; |
19096 | case DW_LANG_Ada83: | |
8aaf0b47 | 19097 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19098 | cu->language = language_ada; |
19099 | break; | |
72019c9c GM |
19100 | case DW_LANG_Modula2: |
19101 | cu->language = language_m2; | |
19102 | break; | |
fe8e67fd PM |
19103 | case DW_LANG_Pascal83: |
19104 | cu->language = language_pascal; | |
19105 | break; | |
22566fbd DJ |
19106 | case DW_LANG_ObjC: |
19107 | cu->language = language_objc; | |
19108 | break; | |
c44af4eb TT |
19109 | case DW_LANG_Rust: |
19110 | case DW_LANG_Rust_old: | |
19111 | cu->language = language_rust; | |
19112 | break; | |
c906108c SS |
19113 | case DW_LANG_Cobol74: |
19114 | case DW_LANG_Cobol85: | |
c906108c | 19115 | default: |
e142c38c | 19116 | cu->language = language_minimal; |
c906108c SS |
19117 | break; |
19118 | } | |
e142c38c | 19119 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19120 | } |
19121 | ||
19122 | /* Return the named attribute or NULL if not there. */ | |
19123 | ||
19124 | static struct attribute * | |
e142c38c | 19125 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19126 | { |
a48e046c | 19127 | for (;;) |
c906108c | 19128 | { |
a48e046c TT |
19129 | unsigned int i; |
19130 | struct attribute *spec = NULL; | |
19131 | ||
19132 | for (i = 0; i < die->num_attrs; ++i) | |
19133 | { | |
19134 | if (die->attrs[i].name == name) | |
19135 | return &die->attrs[i]; | |
19136 | if (die->attrs[i].name == DW_AT_specification | |
19137 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19138 | spec = &die->attrs[i]; | |
19139 | } | |
19140 | ||
19141 | if (!spec) | |
19142 | break; | |
c906108c | 19143 | |
f2f0e013 | 19144 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19145 | } |
c5aa993b | 19146 | |
c906108c SS |
19147 | return NULL; |
19148 | } | |
19149 | ||
7d45c7c3 KB |
19150 | /* Return the string associated with a string-typed attribute, or NULL if it |
19151 | is either not found or is of an incorrect type. */ | |
19152 | ||
19153 | static const char * | |
19154 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19155 | { | |
19156 | struct attribute *attr; | |
19157 | const char *str = NULL; | |
19158 | ||
19159 | attr = dwarf2_attr (die, name, cu); | |
19160 | ||
19161 | if (attr != NULL) | |
19162 | { | |
43988095 | 19163 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 19164 | || attr->form == DW_FORM_string |
cf532bd1 | 19165 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
19166 | || attr->form == DW_FORM_strx1 |
19167 | || attr->form == DW_FORM_strx2 | |
19168 | || attr->form == DW_FORM_strx3 | |
19169 | || attr->form == DW_FORM_strx4 | |
b3340438 | 19170 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 19171 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19172 | str = DW_STRING (attr); |
19173 | else | |
b98664d3 | 19174 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19175 | "DIE at %s in module %s"), |
19176 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19177 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19178 | } |
19179 | ||
19180 | return str; | |
19181 | } | |
19182 | ||
a084a2a6 | 19183 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19184 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19185 | static const char * |
19186 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19187 | { | |
19188 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19189 | if (dwo_name == nullptr) | |
19190 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19191 | return dwo_name; | |
19192 | } | |
19193 | ||
05cf31d1 JB |
19194 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19195 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19196 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19197 | |
19198 | static int | |
19199 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19200 | { | |
19201 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19202 | ||
19203 | return (attr && DW_UNSND (attr)); | |
19204 | } | |
19205 | ||
3ca72b44 | 19206 | static int |
e142c38c | 19207 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19208 | { |
05cf31d1 JB |
19209 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19210 | which value is non-zero. However, we have to be careful with | |
19211 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19212 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19213 | end up accidently finding a declaration attribute that belongs | |
19214 | to a different DIE referenced by the specification attribute, | |
19215 | even though the given DIE does not have a declaration attribute. */ | |
19216 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19217 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19218 | } |
19219 | ||
63d06c5c | 19220 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19221 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19222 | containing the return value on output. If there is no |
19223 | specification, but there is an abstract origin, that is | |
19224 | returned. */ | |
63d06c5c DC |
19225 | |
19226 | static struct die_info * | |
f2f0e013 | 19227 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19228 | { |
f2f0e013 DJ |
19229 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19230 | *spec_cu); | |
63d06c5c | 19231 | |
edb3359d DJ |
19232 | if (spec_attr == NULL) |
19233 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19234 | ||
63d06c5c DC |
19235 | if (spec_attr == NULL) |
19236 | return NULL; | |
19237 | else | |
f2f0e013 | 19238 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19239 | } |
c906108c | 19240 | |
527f3840 JK |
19241 | /* Stub for free_line_header to match void * callback types. */ |
19242 | ||
19243 | static void | |
19244 | free_line_header_voidp (void *arg) | |
19245 | { | |
9a3c8263 | 19246 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19247 | |
fff8551c | 19248 | delete lh; |
527f3840 JK |
19249 | } |
19250 | ||
83769d0b | 19251 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19252 | |
19253 | static struct dwarf2_section_info * | |
19254 | get_debug_line_section (struct dwarf2_cu *cu) | |
19255 | { | |
19256 | struct dwarf2_section_info *section; | |
518817b3 SM |
19257 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19258 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19259 | |
19260 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19261 | DWO file. */ | |
19262 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19263 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19264 | else if (cu->per_cu->is_dwz) | |
19265 | { | |
ed2dc618 | 19266 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19267 | |
19268 | section = &dwz->line; | |
19269 | } | |
19270 | else | |
19271 | section = &dwarf2_per_objfile->line; | |
19272 | ||
19273 | return section; | |
19274 | } | |
19275 | ||
debd256d | 19276 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19277 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19278 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19279 | Returns NULL if there is a problem reading the header, e.g., if it |
19280 | has a version we don't understand. | |
debd256d JB |
19281 | |
19282 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19283 | the returned object point into the dwarf line section buffer, |
19284 | and must not be freed. */ | |
ae2de4f8 | 19285 | |
fff8551c | 19286 | static line_header_up |
9c541725 | 19287 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19288 | { |
3019eac3 | 19289 | struct dwarf2_section_info *section; |
518817b3 SM |
19290 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19291 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19292 | |
36586728 | 19293 | section = get_debug_line_section (cu); |
96b79293 | 19294 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19295 | if (section->buffer == NULL) |
debd256d | 19296 | { |
3019eac3 | 19297 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19298 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19299 | else |
b98664d3 | 19300 | complaint (_("missing .debug_line section")); |
debd256d JB |
19301 | return 0; |
19302 | } | |
19303 | ||
0df7ad3a TT |
19304 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19305 | dwarf2_per_objfile, section, | |
19306 | &cu->header); | |
debd256d | 19307 | } |
c906108c | 19308 | |
c6da4cef | 19309 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19310 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19311 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19312 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19313 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19314 | |
d521ce57 | 19315 | static const char * |
7ba99d21 | 19316 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19317 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19318 | const char *comp_dir, |
19319 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19320 | { |
d521ce57 TT |
19321 | const char *include_name = fe.name; |
19322 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19323 | const char *pst_filename; |
c6da4cef DE |
19324 | int file_is_pst; |
19325 | ||
8c43009f | 19326 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19327 | |
c89b44cd | 19328 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19329 | if (!IS_ABSOLUTE_PATH (include_name) |
19330 | && (dir_name != NULL || comp_dir != NULL)) | |
19331 | { | |
19332 | /* Avoid creating a duplicate psymtab for PST. | |
19333 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19334 | Before we do the comparison, however, we need to account | |
19335 | for DIR_NAME and COMP_DIR. | |
19336 | First prepend dir_name (if non-NULL). If we still don't | |
19337 | have an absolute path prepend comp_dir (if non-NULL). | |
19338 | However, the directory we record in the include-file's | |
19339 | psymtab does not contain COMP_DIR (to match the | |
19340 | corresponding symtab(s)). | |
19341 | ||
19342 | Example: | |
19343 | ||
19344 | bash$ cd /tmp | |
19345 | bash$ gcc -g ./hello.c | |
19346 | include_name = "hello.c" | |
19347 | dir_name = "." | |
19348 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19349 | DW_AT_name = "./hello.c" |
19350 | ||
19351 | */ | |
c6da4cef DE |
19352 | |
19353 | if (dir_name != NULL) | |
19354 | { | |
c89b44cd TT |
19355 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19356 | include_name, (char *) NULL)); | |
19357 | include_name = name_holder->get (); | |
c6da4cef | 19358 | include_name_to_compare = include_name; |
c6da4cef DE |
19359 | } |
19360 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19361 | { | |
c89b44cd TT |
19362 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19363 | include_name, (char *) NULL)); | |
19364 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19365 | } |
19366 | } | |
19367 | ||
19368 | pst_filename = pst->filename; | |
c89b44cd | 19369 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19370 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19371 | { | |
c89b44cd TT |
19372 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19373 | pst_filename, (char *) NULL)); | |
19374 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19375 | } |
19376 | ||
1e3fad37 | 19377 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19378 | |
c6da4cef DE |
19379 | if (file_is_pst) |
19380 | return NULL; | |
19381 | return include_name; | |
19382 | } | |
19383 | ||
d9b3de22 DE |
19384 | /* State machine to track the state of the line number program. */ |
19385 | ||
6f77053d | 19386 | class lnp_state_machine |
d9b3de22 | 19387 | { |
6f77053d PA |
19388 | public: |
19389 | /* Initialize a machine state for the start of a line number | |
19390 | program. */ | |
804d2729 TT |
19391 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19392 | bool record_lines_p); | |
6f77053d | 19393 | |
8c43009f PA |
19394 | file_entry *current_file () |
19395 | { | |
19396 | /* lh->file_names is 0-based, but the file name numbers in the | |
19397 | statement program are 1-based. */ | |
6f77053d PA |
19398 | return m_line_header->file_name_at (m_file); |
19399 | } | |
19400 | ||
19401 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19402 | we're processing the end of a sequence. */ | |
19403 | void record_line (bool end_sequence); | |
19404 | ||
7ab6656f OJ |
19405 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19406 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19407 | void check_line_address (struct dwarf2_cu *cu, |
19408 | const gdb_byte *line_ptr, | |
7ab6656f | 19409 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19410 | |
19411 | void handle_set_discriminator (unsigned int discriminator) | |
19412 | { | |
19413 | m_discriminator = discriminator; | |
19414 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19415 | } | |
19416 | ||
19417 | /* Handle DW_LNE_set_address. */ | |
19418 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19419 | { | |
19420 | m_op_index = 0; | |
19421 | address += baseaddr; | |
19422 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19423 | } | |
19424 | ||
19425 | /* Handle DW_LNS_advance_pc. */ | |
19426 | void handle_advance_pc (CORE_ADDR adjust); | |
19427 | ||
19428 | /* Handle a special opcode. */ | |
19429 | void handle_special_opcode (unsigned char op_code); | |
19430 | ||
19431 | /* Handle DW_LNS_advance_line. */ | |
19432 | void handle_advance_line (int line_delta) | |
19433 | { | |
19434 | advance_line (line_delta); | |
19435 | } | |
19436 | ||
19437 | /* Handle DW_LNS_set_file. */ | |
19438 | void handle_set_file (file_name_index file); | |
19439 | ||
19440 | /* Handle DW_LNS_negate_stmt. */ | |
19441 | void handle_negate_stmt () | |
19442 | { | |
19443 | m_is_stmt = !m_is_stmt; | |
19444 | } | |
19445 | ||
19446 | /* Handle DW_LNS_const_add_pc. */ | |
19447 | void handle_const_add_pc (); | |
19448 | ||
19449 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19450 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19451 | { | |
19452 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19453 | m_op_index = 0; | |
19454 | } | |
19455 | ||
19456 | /* Handle DW_LNS_copy. */ | |
19457 | void handle_copy () | |
19458 | { | |
19459 | record_line (false); | |
19460 | m_discriminator = 0; | |
19461 | } | |
19462 | ||
19463 | /* Handle DW_LNE_end_sequence. */ | |
19464 | void handle_end_sequence () | |
19465 | { | |
804d2729 | 19466 | m_currently_recording_lines = true; |
6f77053d PA |
19467 | } |
19468 | ||
19469 | private: | |
19470 | /* Advance the line by LINE_DELTA. */ | |
19471 | void advance_line (int line_delta) | |
19472 | { | |
19473 | m_line += line_delta; | |
19474 | ||
19475 | if (line_delta != 0) | |
19476 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19477 | } |
19478 | ||
804d2729 TT |
19479 | struct dwarf2_cu *m_cu; |
19480 | ||
6f77053d PA |
19481 | gdbarch *m_gdbarch; |
19482 | ||
19483 | /* True if we're recording lines. | |
19484 | Otherwise we're building partial symtabs and are just interested in | |
19485 | finding include files mentioned by the line number program. */ | |
19486 | bool m_record_lines_p; | |
19487 | ||
8c43009f | 19488 | /* The line number header. */ |
6f77053d | 19489 | line_header *m_line_header; |
8c43009f | 19490 | |
6f77053d PA |
19491 | /* These are part of the standard DWARF line number state machine, |
19492 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19493 | |
6f77053d | 19494 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19495 | /* The line table index of the current file. */ |
19496 | file_name_index m_file = 1; | |
6f77053d PA |
19497 | unsigned int m_line = 1; |
19498 | ||
19499 | /* These are initialized in the constructor. */ | |
19500 | ||
19501 | CORE_ADDR m_address; | |
19502 | bool m_is_stmt; | |
19503 | unsigned int m_discriminator; | |
d9b3de22 DE |
19504 | |
19505 | /* Additional bits of state we need to track. */ | |
19506 | ||
19507 | /* The last file that we called dwarf2_start_subfile for. | |
19508 | This is only used for TLLs. */ | |
6f77053d | 19509 | unsigned int m_last_file = 0; |
d9b3de22 | 19510 | /* The last file a line number was recorded for. */ |
6f77053d | 19511 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19512 | |
804d2729 TT |
19513 | /* When true, record the lines we decode. */ |
19514 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19515 | |
19516 | /* The last line number that was recorded, used to coalesce | |
19517 | consecutive entries for the same line. This can happen, for | |
19518 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19519 | unsigned int m_last_line = 0; |
19520 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19521 | }; |
d9b3de22 | 19522 | |
6f77053d PA |
19523 | void |
19524 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19525 | { | |
19526 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19527 | / m_line_header->maximum_ops_per_instruction) | |
19528 | * m_line_header->minimum_instruction_length); | |
19529 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19530 | m_op_index = ((m_op_index + adjust) | |
19531 | % m_line_header->maximum_ops_per_instruction); | |
19532 | } | |
d9b3de22 | 19533 | |
6f77053d PA |
19534 | void |
19535 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 19536 | { |
6f77053d | 19537 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
19538 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
19539 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
19540 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
19541 | / m_line_header->maximum_ops_per_instruction) |
19542 | * m_line_header->minimum_instruction_length); | |
19543 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 19544 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 19545 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 19546 | |
258bf0ee | 19547 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
19548 | advance_line (line_delta); |
19549 | record_line (false); | |
19550 | m_discriminator = 0; | |
19551 | } | |
d9b3de22 | 19552 | |
6f77053d PA |
19553 | void |
19554 | lnp_state_machine::handle_set_file (file_name_index file) | |
19555 | { | |
19556 | m_file = file; | |
19557 | ||
19558 | const file_entry *fe = current_file (); | |
19559 | if (fe == NULL) | |
19560 | dwarf2_debug_line_missing_file_complaint (); | |
19561 | else if (m_record_lines_p) | |
19562 | { | |
19563 | const char *dir = fe->include_dir (m_line_header); | |
19564 | ||
c24bdb02 | 19565 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19566 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 19567 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
19568 | } |
19569 | } | |
19570 | ||
19571 | void | |
19572 | lnp_state_machine::handle_const_add_pc () | |
19573 | { | |
19574 | CORE_ADDR adjust | |
19575 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
19576 | ||
19577 | CORE_ADDR addr_adj | |
19578 | = (((m_op_index + adjust) | |
19579 | / m_line_header->maximum_ops_per_instruction) | |
19580 | * m_line_header->minimum_instruction_length); | |
19581 | ||
19582 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19583 | m_op_index = ((m_op_index + adjust) | |
19584 | % m_line_header->maximum_ops_per_instruction); | |
19585 | } | |
d9b3de22 | 19586 | |
a05a36a5 DE |
19587 | /* Return non-zero if we should add LINE to the line number table. |
19588 | LINE is the line to add, LAST_LINE is the last line that was added, | |
19589 | LAST_SUBFILE is the subfile for LAST_LINE. | |
19590 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
19591 | had a non-zero discriminator. | |
19592 | ||
19593 | We have to be careful in the presence of discriminators. | |
19594 | E.g., for this line: | |
19595 | ||
19596 | for (i = 0; i < 100000; i++); | |
19597 | ||
19598 | clang can emit four line number entries for that one line, | |
19599 | each with a different discriminator. | |
19600 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
19601 | ||
19602 | However, we want gdb to coalesce all four entries into one. | |
19603 | Otherwise the user could stepi into the middle of the line and | |
19604 | gdb would get confused about whether the pc really was in the | |
19605 | middle of the line. | |
19606 | ||
19607 | Things are further complicated by the fact that two consecutive | |
19608 | line number entries for the same line is a heuristic used by gcc | |
19609 | to denote the end of the prologue. So we can't just discard duplicate | |
19610 | entries, we have to be selective about it. The heuristic we use is | |
19611 | that we only collapse consecutive entries for the same line if at least | |
19612 | one of those entries has a non-zero discriminator. PR 17276. | |
19613 | ||
19614 | Note: Addresses in the line number state machine can never go backwards | |
19615 | within one sequence, thus this coalescing is ok. */ | |
19616 | ||
19617 | static int | |
804d2729 TT |
19618 | dwarf_record_line_p (struct dwarf2_cu *cu, |
19619 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
19620 | int line_has_non_zero_discriminator, |
19621 | struct subfile *last_subfile) | |
19622 | { | |
c24bdb02 | 19623 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
19624 | return 1; |
19625 | if (line != last_line) | |
19626 | return 1; | |
19627 | /* Same line for the same file that we've seen already. | |
19628 | As a last check, for pr 17276, only record the line if the line | |
19629 | has never had a non-zero discriminator. */ | |
19630 | if (!line_has_non_zero_discriminator) | |
19631 | return 1; | |
19632 | return 0; | |
19633 | } | |
19634 | ||
804d2729 TT |
19635 | /* Use the CU's builder to record line number LINE beginning at |
19636 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
19637 | |
19638 | static void | |
d9b3de22 | 19639 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 19640 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 19641 | struct dwarf2_cu *cu) |
252a6764 DE |
19642 | { |
19643 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
19644 | ||
27e0867f DE |
19645 | if (dwarf_line_debug) |
19646 | { | |
19647 | fprintf_unfiltered (gdb_stdlog, | |
19648 | "Recording line %u, file %s, address %s\n", | |
19649 | line, lbasename (subfile->name), | |
19650 | paddress (gdbarch, address)); | |
19651 | } | |
19652 | ||
804d2729 | 19653 | if (cu != nullptr) |
8c95582d | 19654 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
19655 | } |
19656 | ||
19657 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
19658 | Mark the end of a set of line number records. | |
d9b3de22 | 19659 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
19660 | If SUBFILE is NULL the request is ignored. */ |
19661 | ||
19662 | static void | |
19663 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 19664 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 19665 | { |
27e0867f DE |
19666 | if (subfile == NULL) |
19667 | return; | |
19668 | ||
19669 | if (dwarf_line_debug) | |
19670 | { | |
19671 | fprintf_unfiltered (gdb_stdlog, | |
19672 | "Finishing current line, file %s, address %s\n", | |
19673 | lbasename (subfile->name), | |
19674 | paddress (gdbarch, address)); | |
19675 | } | |
19676 | ||
8c95582d | 19677 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
19678 | } |
19679 | ||
6f77053d PA |
19680 | void |
19681 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 19682 | { |
d9b3de22 DE |
19683 | if (dwarf_line_debug) |
19684 | { | |
19685 | fprintf_unfiltered (gdb_stdlog, | |
19686 | "Processing actual line %u: file %u," | |
94a72be7 | 19687 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 19688 | m_line, m_file, |
6f77053d | 19689 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
19690 | m_is_stmt, m_discriminator, |
19691 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
19692 | } |
19693 | ||
6f77053d | 19694 | file_entry *fe = current_file (); |
8c43009f PA |
19695 | |
19696 | if (fe == NULL) | |
d9b3de22 DE |
19697 | dwarf2_debug_line_missing_file_complaint (); |
19698 | /* For now we ignore lines not starting on an instruction boundary. | |
19699 | But not when processing end_sequence for compatibility with the | |
19700 | previous version of the code. */ | |
6f77053d | 19701 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 19702 | { |
8c43009f | 19703 | fe->included_p = 1; |
8c95582d | 19704 | if (m_record_lines_p) |
d9b3de22 | 19705 | { |
c24bdb02 | 19706 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 19707 | || end_sequence) |
d9b3de22 | 19708 | { |
804d2729 TT |
19709 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
19710 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
19711 | } |
19712 | ||
19713 | if (!end_sequence) | |
19714 | { | |
8c95582d AB |
19715 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
19716 | ||
804d2729 | 19717 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
19718 | m_line_has_non_zero_discriminator, |
19719 | m_last_subfile)) | |
d9b3de22 | 19720 | { |
c24bdb02 | 19721 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 19722 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 19723 | builder->get_current_subfile (), |
8c95582d | 19724 | m_line, m_address, is_stmt, |
804d2729 | 19725 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 19726 | } |
c24bdb02 | 19727 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19728 | m_last_line = m_line; |
d9b3de22 DE |
19729 | } |
19730 | } | |
19731 | } | |
19732 | } | |
19733 | ||
804d2729 TT |
19734 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
19735 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 19736 | { |
804d2729 | 19737 | m_cu = cu; |
6f77053d PA |
19738 | m_gdbarch = arch; |
19739 | m_record_lines_p = record_lines_p; | |
19740 | m_line_header = lh; | |
d9b3de22 | 19741 | |
804d2729 | 19742 | m_currently_recording_lines = true; |
d9b3de22 | 19743 | |
d9b3de22 DE |
19744 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
19745 | was a line entry for it so that the backend has a chance to adjust it | |
19746 | and also record it in case it needs it. This is currently used by MIPS | |
19747 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
19748 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
19749 | m_is_stmt = lh->default_is_stmt; | |
19750 | m_discriminator = 0; | |
252a6764 DE |
19751 | } |
19752 | ||
6f77053d PA |
19753 | void |
19754 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
19755 | const gdb_byte *line_ptr, | |
7ab6656f | 19756 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 19757 | { |
7ab6656f OJ |
19758 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
19759 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
19760 | values of zero to preserve GDB's previous behaviour which is to handle | |
19761 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 19762 | |
7ab6656f | 19763 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
19764 | { |
19765 | /* This line table is for a function which has been | |
19766 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
19767 | ||
518817b3 | 19768 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
19769 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
19770 | ||
b98664d3 | 19771 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 19772 | line_offset, objfile_name (objfile)); |
804d2729 TT |
19773 | m_currently_recording_lines = false; |
19774 | /* Note: m_currently_recording_lines is left as false until we see | |
19775 | DW_LNE_end_sequence. */ | |
924c2928 DE |
19776 | } |
19777 | } | |
19778 | ||
f3f5162e | 19779 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
19780 | Process the line number information in LH. |
19781 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
19782 | program in order to set included_p for every referenced header. */ | |
debd256d | 19783 | |
c906108c | 19784 | static void |
43f3e411 DE |
19785 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
19786 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 19787 | { |
d521ce57 TT |
19788 | const gdb_byte *line_ptr, *extended_end; |
19789 | const gdb_byte *line_end; | |
a8c50c1f | 19790 | unsigned int bytes_read, extended_len; |
699ca60a | 19791 | unsigned char op_code, extended_op; |
e142c38c | 19792 | CORE_ADDR baseaddr; |
518817b3 | 19793 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 19794 | bfd *abfd = objfile->obfd; |
fbf65064 | 19795 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
19796 | /* True if we're recording line info (as opposed to building partial |
19797 | symtabs and just interested in finding include files mentioned by | |
19798 | the line number program). */ | |
19799 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 19800 | |
b3b3bada | 19801 | baseaddr = objfile->text_section_offset (); |
c906108c | 19802 | |
debd256d JB |
19803 | line_ptr = lh->statement_program_start; |
19804 | line_end = lh->statement_program_end; | |
c906108c SS |
19805 | |
19806 | /* Read the statement sequences until there's nothing left. */ | |
19807 | while (line_ptr < line_end) | |
19808 | { | |
6f77053d PA |
19809 | /* The DWARF line number program state machine. Reset the state |
19810 | machine at the start of each sequence. */ | |
804d2729 | 19811 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 19812 | bool end_sequence = false; |
d9b3de22 | 19813 | |
8c43009f | 19814 | if (record_lines_p) |
c906108c | 19815 | { |
8c43009f PA |
19816 | /* Start a subfile for the current file of the state |
19817 | machine. */ | |
19818 | const file_entry *fe = state_machine.current_file (); | |
19819 | ||
19820 | if (fe != NULL) | |
804d2729 | 19821 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
19822 | } |
19823 | ||
a738430d | 19824 | /* Decode the table. */ |
d9b3de22 | 19825 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
19826 | { |
19827 | op_code = read_1_byte (abfd, line_ptr); | |
19828 | line_ptr += 1; | |
9aa1fe7e | 19829 | |
debd256d | 19830 | if (op_code >= lh->opcode_base) |
6e70227d | 19831 | { |
8e07a239 | 19832 | /* Special opcode. */ |
6f77053d | 19833 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
19834 | } |
19835 | else switch (op_code) | |
c906108c SS |
19836 | { |
19837 | case DW_LNS_extended_op: | |
3e43a32a MS |
19838 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
19839 | &bytes_read); | |
473b7be6 | 19840 | line_ptr += bytes_read; |
a8c50c1f | 19841 | extended_end = line_ptr + extended_len; |
c906108c SS |
19842 | extended_op = read_1_byte (abfd, line_ptr); |
19843 | line_ptr += 1; | |
19844 | switch (extended_op) | |
19845 | { | |
19846 | case DW_LNE_end_sequence: | |
6f77053d PA |
19847 | state_machine.handle_end_sequence (); |
19848 | end_sequence = true; | |
c906108c SS |
19849 | break; |
19850 | case DW_LNE_set_address: | |
d9b3de22 DE |
19851 | { |
19852 | CORE_ADDR address | |
c8a7a66f | 19853 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 19854 | line_ptr += bytes_read; |
6f77053d PA |
19855 | |
19856 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 19857 | lowpc - baseaddr, address); |
6f77053d | 19858 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 19859 | } |
c906108c SS |
19860 | break; |
19861 | case DW_LNE_define_file: | |
debd256d | 19862 | { |
d521ce57 | 19863 | const char *cur_file; |
ecfb656c PA |
19864 | unsigned int mod_time, length; |
19865 | dir_index dindex; | |
6e70227d | 19866 | |
3e43a32a MS |
19867 | cur_file = read_direct_string (abfd, line_ptr, |
19868 | &bytes_read); | |
debd256d | 19869 | line_ptr += bytes_read; |
ecfb656c | 19870 | dindex = (dir_index) |
debd256d JB |
19871 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
19872 | line_ptr += bytes_read; | |
19873 | mod_time = | |
19874 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19875 | line_ptr += bytes_read; | |
19876 | length = | |
19877 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19878 | line_ptr += bytes_read; | |
ecfb656c | 19879 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 19880 | } |
c906108c | 19881 | break; |
d0c6ba3d | 19882 | case DW_LNE_set_discriminator: |
6f77053d PA |
19883 | { |
19884 | /* The discriminator is not interesting to the | |
19885 | debugger; just ignore it. We still need to | |
19886 | check its value though: | |
19887 | if there are consecutive entries for the same | |
19888 | (non-prologue) line we want to coalesce them. | |
19889 | PR 17276. */ | |
19890 | unsigned int discr | |
19891 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19892 | line_ptr += bytes_read; | |
19893 | ||
19894 | state_machine.handle_set_discriminator (discr); | |
19895 | } | |
d0c6ba3d | 19896 | break; |
c906108c | 19897 | default: |
b98664d3 | 19898 | complaint (_("mangled .debug_line section")); |
debd256d | 19899 | return; |
c906108c | 19900 | } |
a8c50c1f DJ |
19901 | /* Make sure that we parsed the extended op correctly. If e.g. |
19902 | we expected a different address size than the producer used, | |
19903 | we may have read the wrong number of bytes. */ | |
19904 | if (line_ptr != extended_end) | |
19905 | { | |
b98664d3 | 19906 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
19907 | return; |
19908 | } | |
c906108c SS |
19909 | break; |
19910 | case DW_LNS_copy: | |
6f77053d | 19911 | state_machine.handle_copy (); |
c906108c SS |
19912 | break; |
19913 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
19914 | { |
19915 | CORE_ADDR adjust | |
19916 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 19917 | line_ptr += bytes_read; |
6f77053d PA |
19918 | |
19919 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 19920 | } |
c906108c SS |
19921 | break; |
19922 | case DW_LNS_advance_line: | |
a05a36a5 DE |
19923 | { |
19924 | int line_delta | |
19925 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 19926 | line_ptr += bytes_read; |
6f77053d PA |
19927 | |
19928 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 19929 | } |
c906108c SS |
19930 | break; |
19931 | case DW_LNS_set_file: | |
d9b3de22 | 19932 | { |
6f77053d | 19933 | file_name_index file |
ecfb656c PA |
19934 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
19935 | &bytes_read); | |
d9b3de22 | 19936 | line_ptr += bytes_read; |
8c43009f | 19937 | |
6f77053d | 19938 | state_machine.handle_set_file (file); |
d9b3de22 | 19939 | } |
c906108c SS |
19940 | break; |
19941 | case DW_LNS_set_column: | |
0ad93d4f | 19942 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
19943 | line_ptr += bytes_read; |
19944 | break; | |
19945 | case DW_LNS_negate_stmt: | |
6f77053d | 19946 | state_machine.handle_negate_stmt (); |
c906108c SS |
19947 | break; |
19948 | case DW_LNS_set_basic_block: | |
c906108c | 19949 | break; |
c2c6d25f JM |
19950 | /* Add to the address register of the state machine the |
19951 | address increment value corresponding to special opcode | |
a738430d MK |
19952 | 255. I.e., this value is scaled by the minimum |
19953 | instruction length since special opcode 255 would have | |
b021a221 | 19954 | scaled the increment. */ |
c906108c | 19955 | case DW_LNS_const_add_pc: |
6f77053d | 19956 | state_machine.handle_const_add_pc (); |
c906108c SS |
19957 | break; |
19958 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 19959 | { |
6f77053d | 19960 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 19961 | line_ptr += 2; |
6f77053d PA |
19962 | |
19963 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 19964 | } |
c906108c | 19965 | break; |
9aa1fe7e | 19966 | default: |
a738430d MK |
19967 | { |
19968 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 19969 | int i; |
a738430d | 19970 | |
debd256d | 19971 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
19972 | { |
19973 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19974 | line_ptr += bytes_read; | |
19975 | } | |
19976 | } | |
c906108c SS |
19977 | } |
19978 | } | |
d9b3de22 DE |
19979 | |
19980 | if (!end_sequence) | |
19981 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
19982 | ||
19983 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
19984 | in which case we still finish recording the last line). */ | |
6f77053d | 19985 | state_machine.record_line (true); |
c906108c | 19986 | } |
f3f5162e DE |
19987 | } |
19988 | ||
19989 | /* Decode the Line Number Program (LNP) for the given line_header | |
19990 | structure and CU. The actual information extracted and the type | |
19991 | of structures created from the LNP depends on the value of PST. | |
19992 | ||
19993 | 1. If PST is NULL, then this procedure uses the data from the program | |
19994 | to create all necessary symbol tables, and their linetables. | |
19995 | ||
19996 | 2. If PST is not NULL, this procedure reads the program to determine | |
19997 | the list of files included by the unit represented by PST, and | |
19998 | builds all the associated partial symbol tables. | |
19999 | ||
20000 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20001 | It is used for relative paths in the line table. | |
20002 | NOTE: When processing partial symtabs (pst != NULL), | |
20003 | comp_dir == pst->dirname. | |
20004 | ||
20005 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20006 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20007 | symtab we don't use it in the name of the psymtabs we create. | |
20008 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20009 | A good testcase for this is mb-inline.exp. |
20010 | ||
527f3840 JK |
20011 | LOWPC is the lowest address in CU (or 0 if not known). |
20012 | ||
20013 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20014 | for its PC<->lines mapping information. Otherwise only the filename | |
20015 | table is read in. */ | |
f3f5162e DE |
20016 | |
20017 | static void | |
20018 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20019 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20020 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20021 | { |
518817b3 | 20022 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20023 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20024 | |
527f3840 JK |
20025 | if (decode_mapping) |
20026 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20027 | |
20028 | if (decode_for_pst_p) | |
20029 | { | |
aaa75496 JB |
20030 | /* Now that we're done scanning the Line Header Program, we can |
20031 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20032 | for (auto &file_entry : lh->file_names ()) |
20033 | if (file_entry.included_p == 1) | |
aaa75496 | 20034 | { |
c89b44cd | 20035 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20036 | const char *include_name = |
7ba99d21 AT |
20037 | psymtab_include_file_name (lh, file_entry, pst, |
20038 | comp_dir, &name_holder); | |
c6da4cef | 20039 | if (include_name != NULL) |
aaa75496 JB |
20040 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20041 | } | |
20042 | } | |
cb1df416 DJ |
20043 | else |
20044 | { | |
20045 | /* Make sure a symtab is created for every file, even files | |
20046 | which contain only variables (i.e. no code with associated | |
20047 | line numbers). */ | |
c24bdb02 KS |
20048 | buildsym_compunit *builder = cu->get_builder (); |
20049 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20050 | |
7ba99d21 | 20051 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20052 | { |
804d2729 | 20053 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20054 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20055 | { |
c24bdb02 | 20056 | builder->get_current_subfile ()->symtab |
804d2729 | 20057 | = allocate_symtab (cust, |
c24bdb02 | 20058 | builder->get_current_subfile ()->name); |
43f3e411 | 20059 | } |
c24bdb02 | 20060 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20061 | } |
20062 | } | |
c906108c SS |
20063 | } |
20064 | ||
20065 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20066 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20067 | or NULL if not known. |
c906108c SS |
20068 | This routine tries to keep line numbers from identical absolute and |
20069 | relative file names in a common subfile. | |
20070 | ||
20071 | Using the `list' example from the GDB testsuite, which resides in | |
20072 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20073 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20074 | ||
c5aa993b | 20075 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20076 | DW_AT_comp_dir: /compdir |
357e46e7 | 20077 | files.files[0].name: list0.h |
c5aa993b | 20078 | files.files[0].dir: /srcdir |
357e46e7 | 20079 | files.files[1].name: list0.c |
c5aa993b | 20080 | files.files[1].dir: /srcdir |
c906108c SS |
20081 | |
20082 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20083 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20084 | start_subfile will ensure that this happens provided that we pass the | |
20085 | concatenation of files.files[1].dir and files.files[1].name as the | |
20086 | subfile's name. */ | |
c906108c SS |
20087 | |
20088 | static void | |
804d2729 TT |
20089 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20090 | const char *dirname) | |
c906108c | 20091 | { |
43816ebc | 20092 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20093 | |
4d663531 | 20094 | /* In order not to lose the line information directory, |
4f1520fb FR |
20095 | we concatenate it to the filename when it makes sense. |
20096 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20097 | information): ``The directory index is ignored for file names | |
20098 | that represent full path names''. Thus ignoring dirname in the | |
20099 | `else' branch below isn't an issue. */ | |
c906108c | 20100 | |
d5166ae1 | 20101 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20102 | { |
43816ebc TT |
20103 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20104 | filename = copy.get (); | |
d521ce57 | 20105 | } |
c906108c | 20106 | |
c24bdb02 | 20107 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20108 | } |
20109 | ||
804d2729 TT |
20110 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20111 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20112 | |
c24bdb02 KS |
20113 | struct compunit_symtab * |
20114 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20115 | CORE_ADDR low_pc) | |
f4dc4d17 | 20116 | { |
c24bdb02 | 20117 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20118 | |
c24bdb02 KS |
20119 | m_builder.reset (new struct buildsym_compunit |
20120 | (per_cu->dwarf2_per_objfile->objfile, | |
20121 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 20122 | |
c24bdb02 | 20123 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20124 | |
c24bdb02 KS |
20125 | get_builder ()->record_debugformat ("DWARF 2"); |
20126 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20127 | |
c24bdb02 | 20128 | processing_has_namespace_info = false; |
43f3e411 | 20129 | |
c24bdb02 | 20130 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20131 | } |
20132 | ||
4c2df51b DJ |
20133 | static void |
20134 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20135 | struct dwarf2_cu *cu) |
4c2df51b | 20136 | { |
518817b3 | 20137 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
20138 | struct comp_unit_head *cu_header = &cu->header; |
20139 | ||
4c2df51b DJ |
20140 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20141 | code here to turn a symbol with DW_AT_external and a | |
20142 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20143 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20144 | with some versions of binutils) where shared libraries could have | |
20145 | relocations against symbols in their debug information - the | |
20146 | minimal symbol would have the right address, but the debug info | |
20147 | would not. It's no longer necessary, because we will explicitly | |
20148 | apply relocations when we read in the debug information now. */ | |
20149 | ||
20150 | /* A DW_AT_location attribute with no contents indicates that a | |
20151 | variable has been optimized away. */ | |
4fc6c0d5 | 20152 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20153 | { |
f1e6e072 | 20154 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20155 | return; |
20156 | } | |
20157 | ||
20158 | /* Handle one degenerate form of location expression specially, to | |
20159 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20160 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20161 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20162 | |
4fc6c0d5 | 20163 | if (attr->form_is_block () |
3019eac3 DE |
20164 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20165 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20166 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20167 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20168 | && (DW_BLOCK (attr)->size |
20169 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20170 | { |
891d2f0b | 20171 | unsigned int dummy; |
4c2df51b | 20172 | |
3019eac3 | 20173 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20174 | SET_SYMBOL_VALUE_ADDRESS |
20175 | (sym, cu->header.read_address (objfile->obfd, | |
20176 | DW_BLOCK (attr)->data + 1, | |
20177 | &dummy)); | |
3019eac3 | 20178 | else |
38583298 TT |
20179 | SET_SYMBOL_VALUE_ADDRESS |
20180 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20181 | &dummy)); | |
f1e6e072 | 20182 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20183 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20184 | SET_SYMBOL_VALUE_ADDRESS |
20185 | (sym, | |
20186 | SYMBOL_VALUE_ADDRESS (sym) | |
20187 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20188 | return; |
20189 | } | |
20190 | ||
20191 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20192 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20193 | (i.e. when the value of a register or memory location is | |
20194 | referenced, or a thread-local block, etc.). Then again, it might | |
20195 | not be worthwhile. I'm assuming that it isn't unless performance | |
20196 | or memory numbers show me otherwise. */ | |
20197 | ||
f1e6e072 | 20198 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20199 | |
f1e6e072 | 20200 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20201 | cu->has_loclist = true; |
4c2df51b DJ |
20202 | } |
20203 | ||
c906108c SS |
20204 | /* Given a pointer to a DWARF information entry, figure out if we need |
20205 | to make a symbol table entry for it, and if so, create a new entry | |
20206 | and return a pointer to it. | |
20207 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20208 | used the passed type. |
20209 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20210 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20211 | |
20212 | static struct symbol * | |
5e2db402 TT |
20213 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20214 | struct symbol *space) | |
c906108c | 20215 | { |
518817b3 SM |
20216 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20217 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20218 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 20219 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 20220 | struct symbol *sym = NULL; |
15d034d0 | 20221 | const char *name; |
c906108c SS |
20222 | struct attribute *attr = NULL; |
20223 | struct attribute *attr2 = NULL; | |
e142c38c | 20224 | CORE_ADDR baseaddr; |
e37fd15a SW |
20225 | struct pending **list_to_add = NULL; |
20226 | ||
edb3359d | 20227 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20228 | |
b3b3bada | 20229 | baseaddr = objfile->text_section_offset (); |
c906108c | 20230 | |
94af9270 | 20231 | name = dwarf2_name (die, cu); |
c906108c SS |
20232 | if (name) |
20233 | { | |
94af9270 | 20234 | const char *linkagename; |
34eaf542 | 20235 | int suppress_add = 0; |
94af9270 | 20236 | |
34eaf542 TT |
20237 | if (space) |
20238 | sym = space; | |
20239 | else | |
e623cf5d | 20240 | sym = allocate_symbol (objfile); |
c906108c | 20241 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20242 | |
20243 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20244 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 20245 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 20246 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 20247 | |
f55ee35c JK |
20248 | /* Fortran does not have mangling standard and the mangling does differ |
20249 | between gfortran, iFort etc. */ | |
20250 | if (cu->language == language_fortran | |
468c0cbb CB |
20251 | && symbol_get_demangled_name (sym) == NULL) |
20252 | symbol_set_demangled_name (sym, | |
cfc594ee | 20253 | dwarf2_full_name (name, die, cu), |
29df156d | 20254 | NULL); |
f55ee35c | 20255 | |
c906108c | 20256 | /* Default assumptions. |
c5aa993b | 20257 | Use the passed type or decode it from the die. */ |
176620f1 | 20258 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20259 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20260 | if (type != NULL) |
20261 | SYMBOL_TYPE (sym) = type; | |
20262 | else | |
e7c27a73 | 20263 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20264 | attr = dwarf2_attr (die, |
20265 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20266 | cu); | |
435d3d88 | 20267 | if (attr != nullptr) |
c906108c SS |
20268 | { |
20269 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20270 | } | |
cb1df416 | 20271 | |
edb3359d DJ |
20272 | attr = dwarf2_attr (die, |
20273 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20274 | cu); | |
435d3d88 | 20275 | if (attr != nullptr) |
cb1df416 | 20276 | { |
ecfb656c | 20277 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20278 | struct file_entry *fe; |
9a619af0 | 20279 | |
ecfb656c PA |
20280 | if (cu->line_header != NULL) |
20281 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20282 | else |
20283 | fe = NULL; | |
20284 | ||
20285 | if (fe == NULL) | |
b98664d3 | 20286 | complaint (_("file index out of range")); |
8c43009f PA |
20287 | else |
20288 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20289 | } |
20290 | ||
c906108c SS |
20291 | switch (die->tag) |
20292 | { | |
20293 | case DW_TAG_label: | |
e142c38c | 20294 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20295 | if (attr != nullptr) |
3e29f34a MR |
20296 | { |
20297 | CORE_ADDR addr; | |
20298 | ||
cd6c91b4 | 20299 | addr = attr->value_as_address (); |
3e29f34a | 20300 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20301 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20302 | } |
0f5238ed TT |
20303 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20304 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20305 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20306 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20307 | break; |
20308 | case DW_TAG_subprogram: | |
20309 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20310 | finish_block. */ | |
f1e6e072 | 20311 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20312 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20313 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20314 | || cu->language == language_ada |
20315 | || cu->language == language_fortran) | |
c906108c | 20316 | { |
2cfa0c8d | 20317 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20318 | Ada and Fortran subprograms, whether marked external or |
20319 | not, are always stored as a global symbol, because we want | |
20320 | to be able to access them globally. For instance, we want | |
20321 | to be able to break on a nested subprogram without having | |
20322 | to specify the context. */ | |
c24bdb02 | 20323 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20324 | } |
20325 | else | |
20326 | { | |
e37fd15a | 20327 | list_to_add = cu->list_in_scope; |
c906108c SS |
20328 | } |
20329 | break; | |
edb3359d DJ |
20330 | case DW_TAG_inlined_subroutine: |
20331 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20332 | finish_block. */ | |
f1e6e072 | 20333 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20334 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20335 | list_to_add = cu->list_in_scope; |
edb3359d | 20336 | break; |
34eaf542 TT |
20337 | case DW_TAG_template_value_param: |
20338 | suppress_add = 1; | |
20339 | /* Fall through. */ | |
72929c62 | 20340 | case DW_TAG_constant: |
c906108c | 20341 | case DW_TAG_variable: |
254e6b9e | 20342 | case DW_TAG_member: |
0963b4bd MS |
20343 | /* Compilation with minimal debug info may result in |
20344 | variables with missing type entries. Change the | |
20345 | misleading `void' type to something sensible. */ | |
c906108c | 20346 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 20347 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20348 | |
e142c38c | 20349 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20350 | /* In the case of DW_TAG_member, we should only be called for |
20351 | static const members. */ | |
20352 | if (die->tag == DW_TAG_member) | |
20353 | { | |
3863f96c DE |
20354 | /* dwarf2_add_field uses die_is_declaration, |
20355 | so we do the same. */ | |
254e6b9e DE |
20356 | gdb_assert (die_is_declaration (die, cu)); |
20357 | gdb_assert (attr); | |
20358 | } | |
435d3d88 | 20359 | if (attr != nullptr) |
c906108c | 20360 | { |
e7c27a73 | 20361 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20362 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20363 | if (!suppress_add) |
34eaf542 TT |
20364 | { |
20365 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20366 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20367 | else |
e37fd15a | 20368 | list_to_add = cu->list_in_scope; |
34eaf542 | 20369 | } |
c906108c SS |
20370 | break; |
20371 | } | |
e142c38c | 20372 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20373 | if (attr != nullptr) |
c906108c | 20374 | { |
e7c27a73 | 20375 | var_decode_location (attr, sym, cu); |
e142c38c | 20376 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20377 | |
20378 | /* Fortran explicitly imports any global symbols to the local | |
20379 | scope by DW_TAG_common_block. */ | |
20380 | if (cu->language == language_fortran && die->parent | |
20381 | && die->parent->tag == DW_TAG_common_block) | |
20382 | attr2 = NULL; | |
20383 | ||
caac4577 JG |
20384 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20385 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
20386 | && !dwarf2_per_objfile->has_section_at_zero) | |
20387 | { | |
20388 | /* When a static variable is eliminated by the linker, | |
20389 | the corresponding debug information is not stripped | |
20390 | out, but the variable address is set to null; | |
20391 | do not add such variables into symbol table. */ | |
20392 | } | |
20393 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20394 | { |
4b610737 TT |
20395 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20396 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
20397 | && dwarf2_per_objfile->can_copy) | |
20398 | { | |
20399 | /* A global static variable might be subject to | |
20400 | copy relocation. We first check for a local | |
20401 | minsym, though, because maybe the symbol was | |
20402 | marked hidden, in which case this would not | |
20403 | apply. */ | |
20404 | bound_minimal_symbol found | |
20405 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20406 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20407 | if (found.minsym != nullptr) |
20408 | sym->maybe_copied = 1; | |
20409 | } | |
f55ee35c | 20410 | |
1c809c68 TT |
20411 | /* A variable with DW_AT_external is never static, |
20412 | but it may be block-scoped. */ | |
804d2729 | 20413 | list_to_add |
c24bdb02 KS |
20414 | = ((cu->list_in_scope |
20415 | == cu->get_builder ()->get_file_symbols ()) | |
20416 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20417 | : cu->list_in_scope); |
1c809c68 | 20418 | } |
c906108c | 20419 | else |
e37fd15a | 20420 | list_to_add = cu->list_in_scope; |
c906108c SS |
20421 | } |
20422 | else | |
20423 | { | |
20424 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20425 | If it is an external symbol and we have type information |
20426 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20427 | The address of the variable will then be determined from | |
20428 | the minimal symbol table whenever the variable is | |
20429 | referenced. */ | |
e142c38c | 20430 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20431 | |
20432 | /* Fortran explicitly imports any global symbols to the local | |
20433 | scope by DW_TAG_common_block. */ | |
20434 | if (cu->language == language_fortran && die->parent | |
20435 | && die->parent->tag == DW_TAG_common_block) | |
20436 | { | |
20437 | /* SYMBOL_CLASS doesn't matter here because | |
20438 | read_common_block is going to reset it. */ | |
20439 | if (!suppress_add) | |
20440 | list_to_add = cu->list_in_scope; | |
20441 | } | |
20442 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20443 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20444 | { |
0fe7935b DJ |
20445 | /* A variable with DW_AT_external is never static, but it |
20446 | may be block-scoped. */ | |
804d2729 | 20447 | list_to_add |
c24bdb02 KS |
20448 | = ((cu->list_in_scope |
20449 | == cu->get_builder ()->get_file_symbols ()) | |
20450 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20451 | : cu->list_in_scope); |
0fe7935b | 20452 | |
f1e6e072 | 20453 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20454 | } |
442ddf59 JK |
20455 | else if (!die_is_declaration (die, cu)) |
20456 | { | |
20457 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20458 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20459 | if (!suppress_add) |
20460 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20461 | } |
c906108c SS |
20462 | } |
20463 | break; | |
20464 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20465 | { |
20466 | /* If we are inside a function, mark this as an argument. If | |
20467 | not, we might be looking at an argument to an inlined function | |
20468 | when we do not have enough information to show inlined frames; | |
20469 | pretend it's a local variable in that case so that the user can | |
20470 | still see it. */ | |
804d2729 | 20471 | struct context_stack *curr |
c24bdb02 | 20472 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20473 | if (curr != nullptr && curr->name != nullptr) |
20474 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20475 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20476 | if (attr != nullptr) |
a60f3166 TT |
20477 | { |
20478 | var_decode_location (attr, sym, cu); | |
20479 | } | |
20480 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20481 | if (attr != nullptr) |
a60f3166 TT |
20482 | { |
20483 | dwarf2_const_value (attr, sym, cu); | |
20484 | } | |
f346a30d | 20485 | |
a60f3166 TT |
20486 | list_to_add = cu->list_in_scope; |
20487 | } | |
c906108c SS |
20488 | break; |
20489 | case DW_TAG_unspecified_parameters: | |
20490 | /* From varargs functions; gdb doesn't seem to have any | |
20491 | interest in this information, so just ignore it for now. | |
20492 | (FIXME?) */ | |
20493 | break; | |
34eaf542 TT |
20494 | case DW_TAG_template_type_param: |
20495 | suppress_add = 1; | |
20496 | /* Fall through. */ | |
c906108c | 20497 | case DW_TAG_class_type: |
680b30c7 | 20498 | case DW_TAG_interface_type: |
c906108c SS |
20499 | case DW_TAG_structure_type: |
20500 | case DW_TAG_union_type: | |
72019c9c | 20501 | case DW_TAG_set_type: |
c906108c | 20502 | case DW_TAG_enumeration_type: |
f1e6e072 | 20503 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20504 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20505 | |
63d06c5c | 20506 | { |
9c37b5ae | 20507 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20508 | really ever be static objects: otherwise, if you try |
20509 | to, say, break of a class's method and you're in a file | |
20510 | which doesn't mention that class, it won't work unless | |
20511 | the check for all static symbols in lookup_symbol_aux | |
20512 | saves you. See the OtherFileClass tests in | |
20513 | gdb.c++/namespace.exp. */ | |
20514 | ||
e37fd15a | 20515 | if (!suppress_add) |
34eaf542 | 20516 | { |
c24bdb02 | 20517 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20518 | list_to_add |
c24bdb02 | 20519 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20520 | && cu->language == language_cplus |
c24bdb02 | 20521 | ? builder->get_global_symbols () |
804d2729 | 20522 | : cu->list_in_scope); |
63d06c5c | 20523 | |
64382290 | 20524 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 20525 | ... }" also defines a typedef for "foo". */ |
64382290 | 20526 | if (cu->language == language_cplus |
45280282 | 20527 | || cu->language == language_ada |
c44af4eb TT |
20528 | || cu->language == language_d |
20529 | || cu->language == language_rust) | |
64382290 TT |
20530 | { |
20531 | /* The symbol's name is already allocated along | |
20532 | with this objfile, so we don't need to | |
20533 | duplicate it for the type. */ | |
20534 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 20535 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 20536 | } |
63d06c5c DC |
20537 | } |
20538 | } | |
c906108c SS |
20539 | break; |
20540 | case DW_TAG_typedef: | |
f1e6e072 | 20541 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 20542 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20543 | list_to_add = cu->list_in_scope; |
63d06c5c | 20544 | break; |
c906108c | 20545 | case DW_TAG_base_type: |
a02abb62 | 20546 | case DW_TAG_subrange_type: |
f1e6e072 | 20547 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20548 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20549 | list_to_add = cu->list_in_scope; |
c906108c SS |
20550 | break; |
20551 | case DW_TAG_enumerator: | |
e142c38c | 20552 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 20553 | if (attr != nullptr) |
c906108c | 20554 | { |
e7c27a73 | 20555 | dwarf2_const_value (attr, sym, cu); |
c906108c | 20556 | } |
63d06c5c DC |
20557 | { |
20558 | /* NOTE: carlton/2003-11-10: See comment above in the | |
20559 | DW_TAG_class_type, etc. block. */ | |
20560 | ||
804d2729 | 20561 | list_to_add |
c24bdb02 | 20562 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 20563 | && cu->language == language_cplus |
c24bdb02 | 20564 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 20565 | : cu->list_in_scope); |
63d06c5c | 20566 | } |
c906108c | 20567 | break; |
74921315 | 20568 | case DW_TAG_imported_declaration: |
5c4e30ca | 20569 | case DW_TAG_namespace: |
f1e6e072 | 20570 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 20571 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 20572 | break; |
530e8392 KB |
20573 | case DW_TAG_module: |
20574 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
20575 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 20576 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 20577 | break; |
4357ac6c | 20578 | case DW_TAG_common_block: |
f1e6e072 | 20579 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 20580 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 20581 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 20582 | break; |
c906108c SS |
20583 | default: |
20584 | /* Not a tag we recognize. Hopefully we aren't processing | |
20585 | trash data, but since we must specifically ignore things | |
20586 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 20587 | this point. */ |
b98664d3 | 20588 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 20589 | dwarf_tag_name (die->tag)); |
c906108c SS |
20590 | break; |
20591 | } | |
df8a16a1 | 20592 | |
e37fd15a SW |
20593 | if (suppress_add) |
20594 | { | |
20595 | sym->hash_next = objfile->template_symbols; | |
20596 | objfile->template_symbols = sym; | |
20597 | list_to_add = NULL; | |
20598 | } | |
20599 | ||
20600 | if (list_to_add != NULL) | |
d3cb6808 | 20601 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 20602 | |
df8a16a1 DJ |
20603 | /* For the benefit of old versions of GCC, check for anonymous |
20604 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 20605 | if (!cu->processing_has_namespace_info |
94af9270 | 20606 | && cu->language == language_cplus) |
c24bdb02 | 20607 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
20608 | } |
20609 | return (sym); | |
20610 | } | |
20611 | ||
98bfdba5 PA |
20612 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
20613 | zero-extend it as appropriate for the symbol's type. The DWARF | |
20614 | standard (v4) is not entirely clear about the meaning of using | |
20615 | DW_FORM_dataN for a constant with a signed type, where the type is | |
20616 | wider than the data. The conclusion of a discussion on the DWARF | |
20617 | list was that this is unspecified. We choose to always zero-extend | |
20618 | because that is the interpretation long in use by GCC. */ | |
c906108c | 20619 | |
98bfdba5 | 20620 | static gdb_byte * |
ff39bb5e | 20621 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 20622 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 20623 | { |
518817b3 | 20624 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
20625 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
20626 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
20627 | LONGEST l = DW_UNSND (attr); |
20628 | ||
20629 | if (bits < sizeof (*value) * 8) | |
20630 | { | |
20631 | l &= ((LONGEST) 1 << bits) - 1; | |
20632 | *value = l; | |
20633 | } | |
20634 | else if (bits == sizeof (*value) * 8) | |
20635 | *value = l; | |
20636 | else | |
20637 | { | |
224c3ddb | 20638 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
20639 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
20640 | return bytes; | |
20641 | } | |
20642 | ||
20643 | return NULL; | |
20644 | } | |
20645 | ||
20646 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
20647 | the value does not fit in *VALUE, set *BYTES - either already | |
20648 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
20649 | or, set *BATON, if we translated the constant to a location | |
20650 | expression. */ | |
20651 | ||
20652 | static void | |
ff39bb5e | 20653 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
20654 | const char *name, struct obstack *obstack, |
20655 | struct dwarf2_cu *cu, | |
d521ce57 | 20656 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
20657 | struct dwarf2_locexpr_baton **baton) |
20658 | { | |
518817b3 | 20659 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 20660 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 20661 | struct dwarf_block *blk; |
98bfdba5 PA |
20662 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
20663 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20664 | ||
20665 | *value = 0; | |
20666 | *bytes = NULL; | |
20667 | *baton = NULL; | |
c906108c SS |
20668 | |
20669 | switch (attr->form) | |
20670 | { | |
20671 | case DW_FORM_addr: | |
336d760d | 20672 | case DW_FORM_addrx: |
3019eac3 | 20673 | case DW_FORM_GNU_addr_index: |
ac56253d | 20674 | { |
ac56253d TT |
20675 | gdb_byte *data; |
20676 | ||
98bfdba5 PA |
20677 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
20678 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 20679 | cu_header->addr_size, |
98bfdba5 | 20680 | TYPE_LENGTH (type)); |
ac56253d TT |
20681 | /* Symbols of this form are reasonably rare, so we just |
20682 | piggyback on the existing location code rather than writing | |
20683 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 20684 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
20685 | (*baton)->per_cu = cu->per_cu; |
20686 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 20687 | |
98bfdba5 | 20688 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 20689 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 20690 | (*baton)->data = data; |
ac56253d TT |
20691 | |
20692 | data[0] = DW_OP_addr; | |
20693 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
20694 | byte_order, DW_ADDR (attr)); | |
20695 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 20696 | } |
c906108c | 20697 | break; |
4ac36638 | 20698 | case DW_FORM_string: |
93b5768b | 20699 | case DW_FORM_strp: |
cf532bd1 | 20700 | case DW_FORM_strx: |
3019eac3 | 20701 | case DW_FORM_GNU_str_index: |
36586728 | 20702 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
20703 | /* DW_STRING is already allocated on the objfile obstack, point |
20704 | directly to it. */ | |
d521ce57 | 20705 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 20706 | break; |
c906108c SS |
20707 | case DW_FORM_block1: |
20708 | case DW_FORM_block2: | |
20709 | case DW_FORM_block4: | |
20710 | case DW_FORM_block: | |
2dc7f7b3 | 20711 | case DW_FORM_exprloc: |
0224619f | 20712 | case DW_FORM_data16: |
c906108c | 20713 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
20714 | if (TYPE_LENGTH (type) != blk->size) |
20715 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
20716 | TYPE_LENGTH (type)); | |
20717 | *bytes = blk->data; | |
c906108c | 20718 | break; |
2df3850c JM |
20719 | |
20720 | /* The DW_AT_const_value attributes are supposed to carry the | |
20721 | symbol's value "represented as it would be on the target | |
20722 | architecture." By the time we get here, it's already been | |
20723 | converted to host endianness, so we just need to sign- or | |
20724 | zero-extend it as appropriate. */ | |
20725 | case DW_FORM_data1: | |
3aef2284 | 20726 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 20727 | break; |
c906108c | 20728 | case DW_FORM_data2: |
3aef2284 | 20729 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 20730 | break; |
c906108c | 20731 | case DW_FORM_data4: |
3aef2284 | 20732 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 20733 | break; |
c906108c | 20734 | case DW_FORM_data8: |
3aef2284 | 20735 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
20736 | break; |
20737 | ||
c906108c | 20738 | case DW_FORM_sdata: |
663c44ac | 20739 | case DW_FORM_implicit_const: |
98bfdba5 | 20740 | *value = DW_SND (attr); |
2df3850c JM |
20741 | break; |
20742 | ||
c906108c | 20743 | case DW_FORM_udata: |
98bfdba5 | 20744 | *value = DW_UNSND (attr); |
c906108c | 20745 | break; |
2df3850c | 20746 | |
c906108c | 20747 | default: |
b98664d3 | 20748 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 20749 | dwarf_form_name (attr->form)); |
98bfdba5 | 20750 | *value = 0; |
c906108c SS |
20751 | break; |
20752 | } | |
20753 | } | |
20754 | ||
2df3850c | 20755 | |
98bfdba5 PA |
20756 | /* Copy constant value from an attribute to a symbol. */ |
20757 | ||
2df3850c | 20758 | static void |
ff39bb5e | 20759 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 20760 | struct dwarf2_cu *cu) |
2df3850c | 20761 | { |
518817b3 | 20762 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 20763 | LONGEST value; |
d521ce57 | 20764 | const gdb_byte *bytes; |
98bfdba5 | 20765 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 20766 | |
98bfdba5 | 20767 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 20768 | sym->print_name (), |
98bfdba5 PA |
20769 | &objfile->objfile_obstack, cu, |
20770 | &value, &bytes, &baton); | |
2df3850c | 20771 | |
98bfdba5 PA |
20772 | if (baton != NULL) |
20773 | { | |
98bfdba5 | 20774 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 20775 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
20776 | } |
20777 | else if (bytes != NULL) | |
20778 | { | |
20779 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 20780 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
20781 | } |
20782 | else | |
20783 | { | |
20784 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 20785 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 20786 | } |
2df3850c JM |
20787 | } |
20788 | ||
c906108c SS |
20789 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
20790 | ||
20791 | static struct type * | |
e7c27a73 | 20792 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20793 | { |
c906108c | 20794 | struct attribute *type_attr; |
c906108c | 20795 | |
e142c38c | 20796 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
20797 | if (!type_attr) |
20798 | { | |
518817b3 | 20799 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 20800 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 20801 | return objfile_type (objfile)->builtin_void; |
c906108c | 20802 | } |
348e048f | 20803 | |
673bfd45 | 20804 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
20805 | } |
20806 | ||
b4ba55a1 JB |
20807 | /* True iff CU's producer generates GNAT Ada auxiliary information |
20808 | that allows to find parallel types through that information instead | |
20809 | of having to do expensive parallel lookups by type name. */ | |
20810 | ||
20811 | static int | |
20812 | need_gnat_info (struct dwarf2_cu *cu) | |
20813 | { | |
de4cb04a JB |
20814 | /* Assume that the Ada compiler was GNAT, which always produces |
20815 | the auxiliary information. */ | |
20816 | return (cu->language == language_ada); | |
b4ba55a1 JB |
20817 | } |
20818 | ||
b4ba55a1 JB |
20819 | /* Return the auxiliary type of the die in question using its |
20820 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
20821 | attribute is not present. */ | |
20822 | ||
20823 | static struct type * | |
20824 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
20825 | { | |
b4ba55a1 | 20826 | struct attribute *type_attr; |
b4ba55a1 JB |
20827 | |
20828 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
20829 | if (!type_attr) | |
20830 | return NULL; | |
20831 | ||
673bfd45 | 20832 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
20833 | } |
20834 | ||
20835 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
20836 | descriptive type accordingly. */ | |
20837 | ||
20838 | static void | |
20839 | set_descriptive_type (struct type *type, struct die_info *die, | |
20840 | struct dwarf2_cu *cu) | |
20841 | { | |
20842 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
20843 | ||
20844 | if (descriptive_type) | |
20845 | { | |
20846 | ALLOCATE_GNAT_AUX_TYPE (type); | |
20847 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
20848 | } | |
20849 | } | |
20850 | ||
c906108c SS |
20851 | /* Return the containing type of the die in question using its |
20852 | DW_AT_containing_type attribute. */ | |
20853 | ||
20854 | static struct type * | |
e7c27a73 | 20855 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20856 | { |
c906108c | 20857 | struct attribute *type_attr; |
518817b3 | 20858 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 20859 | |
e142c38c | 20860 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
20861 | if (!type_attr) |
20862 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 20863 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 20864 | |
673bfd45 | 20865 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
20866 | } |
20867 | ||
ac9ec31b DE |
20868 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
20869 | ||
20870 | static struct type * | |
20871 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
20872 | { | |
518817b3 SM |
20873 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20874 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 20875 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 20876 | char *saved; |
ac9ec31b | 20877 | |
528e1572 SM |
20878 | std::string message |
20879 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
20880 | objfile_name (objfile), | |
20881 | sect_offset_str (cu->header.sect_off), | |
20882 | sect_offset_str (die->sect_off)); | |
efba19b0 | 20883 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 20884 | |
19f392bc | 20885 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
20886 | } |
20887 | ||
673bfd45 | 20888 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
20889 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
20890 | DW_AT_containing_type. | |
673bfd45 DE |
20891 | If there is no type substitute an error marker. */ |
20892 | ||
c906108c | 20893 | static struct type * |
ff39bb5e | 20894 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 20895 | struct dwarf2_cu *cu) |
c906108c | 20896 | { |
518817b3 SM |
20897 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20898 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20899 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
20900 | struct type *this_type; |
20901 | ||
ac9ec31b DE |
20902 | gdb_assert (attr->name == DW_AT_type |
20903 | || attr->name == DW_AT_GNAT_descriptive_type | |
20904 | || attr->name == DW_AT_containing_type); | |
20905 | ||
673bfd45 DE |
20906 | /* First see if we have it cached. */ |
20907 | ||
36586728 TT |
20908 | if (attr->form == DW_FORM_GNU_ref_alt) |
20909 | { | |
20910 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 20911 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 20912 | |
ed2dc618 SM |
20913 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
20914 | dwarf2_per_objfile); | |
9c541725 | 20915 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 20916 | } |
cd6c91b4 | 20917 | else if (attr->form_is_ref ()) |
673bfd45 | 20918 | { |
0826b30a | 20919 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 20920 | |
9c541725 | 20921 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 20922 | } |
55f1336d | 20923 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 20924 | { |
ac9ec31b | 20925 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 20926 | |
ac9ec31b | 20927 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
20928 | } |
20929 | else | |
20930 | { | |
b98664d3 | 20931 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
20932 | " at %s [in module %s]"), |
20933 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 20934 | objfile_name (objfile)); |
ac9ec31b | 20935 | return build_error_marker_type (cu, die); |
673bfd45 DE |
20936 | } |
20937 | ||
20938 | /* If not cached we need to read it in. */ | |
20939 | ||
20940 | if (this_type == NULL) | |
20941 | { | |
ac9ec31b | 20942 | struct die_info *type_die = NULL; |
673bfd45 DE |
20943 | struct dwarf2_cu *type_cu = cu; |
20944 | ||
cd6c91b4 | 20945 | if (attr->form_is_ref ()) |
ac9ec31b DE |
20946 | type_die = follow_die_ref (die, attr, &type_cu); |
20947 | if (type_die == NULL) | |
20948 | return build_error_marker_type (cu, die); | |
20949 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
20950 | from an inter-CU reference and the type's CU got expanded before |
20951 | ours. */ | |
ac9ec31b | 20952 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
20953 | } |
20954 | ||
20955 | /* If we still don't have a type use an error marker. */ | |
20956 | ||
20957 | if (this_type == NULL) | |
ac9ec31b | 20958 | return build_error_marker_type (cu, die); |
673bfd45 | 20959 | |
f792889a | 20960 | return this_type; |
c906108c SS |
20961 | } |
20962 | ||
673bfd45 DE |
20963 | /* Return the type in DIE, CU. |
20964 | Returns NULL for invalid types. | |
20965 | ||
02142a6c | 20966 | This first does a lookup in die_type_hash, |
673bfd45 DE |
20967 | and only reads the die in if necessary. |
20968 | ||
20969 | NOTE: This can be called when reading in partial or full symbols. */ | |
20970 | ||
f792889a | 20971 | static struct type * |
e7c27a73 | 20972 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20973 | { |
f792889a DJ |
20974 | struct type *this_type; |
20975 | ||
20976 | this_type = get_die_type (die, cu); | |
20977 | if (this_type) | |
20978 | return this_type; | |
20979 | ||
673bfd45 DE |
20980 | return read_type_die_1 (die, cu); |
20981 | } | |
20982 | ||
20983 | /* Read the type in DIE, CU. | |
20984 | Returns NULL for invalid types. */ | |
20985 | ||
20986 | static struct type * | |
20987 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
20988 | { | |
20989 | struct type *this_type = NULL; | |
20990 | ||
c906108c SS |
20991 | switch (die->tag) |
20992 | { | |
20993 | case DW_TAG_class_type: | |
680b30c7 | 20994 | case DW_TAG_interface_type: |
c906108c SS |
20995 | case DW_TAG_structure_type: |
20996 | case DW_TAG_union_type: | |
f792889a | 20997 | this_type = read_structure_type (die, cu); |
c906108c SS |
20998 | break; |
20999 | case DW_TAG_enumeration_type: | |
f792889a | 21000 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21001 | break; |
21002 | case DW_TAG_subprogram: | |
21003 | case DW_TAG_subroutine_type: | |
edb3359d | 21004 | case DW_TAG_inlined_subroutine: |
f792889a | 21005 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21006 | break; |
21007 | case DW_TAG_array_type: | |
f792889a | 21008 | this_type = read_array_type (die, cu); |
c906108c | 21009 | break; |
72019c9c | 21010 | case DW_TAG_set_type: |
f792889a | 21011 | this_type = read_set_type (die, cu); |
72019c9c | 21012 | break; |
c906108c | 21013 | case DW_TAG_pointer_type: |
f792889a | 21014 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21015 | break; |
21016 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21017 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21018 | break; |
21019 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21020 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21021 | break; | |
21022 | case DW_TAG_rvalue_reference_type: | |
21023 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21024 | break; |
21025 | case DW_TAG_const_type: | |
f792889a | 21026 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21027 | break; |
21028 | case DW_TAG_volatile_type: | |
f792889a | 21029 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21030 | break; |
06d66ee9 TT |
21031 | case DW_TAG_restrict_type: |
21032 | this_type = read_tag_restrict_type (die, cu); | |
21033 | break; | |
c906108c | 21034 | case DW_TAG_string_type: |
f792889a | 21035 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21036 | break; |
21037 | case DW_TAG_typedef: | |
f792889a | 21038 | this_type = read_typedef (die, cu); |
c906108c | 21039 | break; |
a02abb62 | 21040 | case DW_TAG_subrange_type: |
f792889a | 21041 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21042 | break; |
c906108c | 21043 | case DW_TAG_base_type: |
f792889a | 21044 | this_type = read_base_type (die, cu); |
c906108c | 21045 | break; |
81a17f79 | 21046 | case DW_TAG_unspecified_type: |
f792889a | 21047 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21048 | break; |
0114d602 DJ |
21049 | case DW_TAG_namespace: |
21050 | this_type = read_namespace_type (die, cu); | |
21051 | break; | |
f55ee35c JK |
21052 | case DW_TAG_module: |
21053 | this_type = read_module_type (die, cu); | |
21054 | break; | |
a2c2acaf MW |
21055 | case DW_TAG_atomic_type: |
21056 | this_type = read_tag_atomic_type (die, cu); | |
21057 | break; | |
c906108c | 21058 | default: |
b98664d3 | 21059 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21060 | dwarf_tag_name (die->tag)); |
c906108c SS |
21061 | break; |
21062 | } | |
63d06c5c | 21063 | |
f792889a | 21064 | return this_type; |
63d06c5c DC |
21065 | } |
21066 | ||
abc72ce4 DE |
21067 | /* See if we can figure out if the class lives in a namespace. We do |
21068 | this by looking for a member function; its demangled name will | |
21069 | contain namespace info, if there is any. | |
21070 | Return the computed name or NULL. | |
21071 | Space for the result is allocated on the objfile's obstack. | |
21072 | This is the full-die version of guess_partial_die_structure_name. | |
21073 | In this case we know DIE has no useful parent. */ | |
21074 | ||
43816ebc | 21075 | static const char * |
abc72ce4 DE |
21076 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21077 | { | |
21078 | struct die_info *spec_die; | |
21079 | struct dwarf2_cu *spec_cu; | |
21080 | struct die_info *child; | |
518817b3 | 21081 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
21082 | |
21083 | spec_cu = cu; | |
21084 | spec_die = die_specification (die, &spec_cu); | |
21085 | if (spec_die != NULL) | |
21086 | { | |
21087 | die = spec_die; | |
21088 | cu = spec_cu; | |
21089 | } | |
21090 | ||
21091 | for (child = die->child; | |
21092 | child != NULL; | |
21093 | child = child->sibling) | |
21094 | { | |
21095 | if (child->tag == DW_TAG_subprogram) | |
21096 | { | |
73b9be8b | 21097 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21098 | |
7d45c7c3 | 21099 | if (linkage_name != NULL) |
abc72ce4 | 21100 | { |
43816ebc TT |
21101 | gdb::unique_xmalloc_ptr<char> actual_name |
21102 | (language_class_name_from_physname (cu->language_defn, | |
21103 | linkage_name)); | |
21104 | const char *name = NULL; | |
abc72ce4 DE |
21105 | |
21106 | if (actual_name != NULL) | |
21107 | { | |
15d034d0 | 21108 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21109 | |
21110 | if (die_name != NULL | |
43816ebc | 21111 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21112 | { |
21113 | /* Strip off the class name from the full name. | |
21114 | We want the prefix. */ | |
21115 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21116 | int actual_name_len = strlen (actual_name.get ()); |
21117 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21118 | |
21119 | /* Test for '::' as a sanity check. */ | |
21120 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21121 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21122 | name = obstack_strndup ( |
e3b94546 | 21123 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21124 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21125 | } |
21126 | } | |
abc72ce4 DE |
21127 | return name; |
21128 | } | |
21129 | } | |
21130 | } | |
21131 | ||
21132 | return NULL; | |
21133 | } | |
21134 | ||
96408a79 SA |
21135 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21136 | prefix part in such case. See | |
21137 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21138 | ||
a121b7c1 | 21139 | static const char * |
96408a79 SA |
21140 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21141 | { | |
21142 | struct attribute *attr; | |
e6a959d6 | 21143 | const char *base; |
96408a79 SA |
21144 | |
21145 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21146 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21147 | return NULL; | |
21148 | ||
7d45c7c3 | 21149 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21150 | return NULL; |
21151 | ||
73b9be8b | 21152 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21153 | if (attr == NULL || DW_STRING (attr) == NULL) |
21154 | return NULL; | |
21155 | ||
21156 | /* dwarf2_name had to be already called. */ | |
21157 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21158 | ||
21159 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21160 | base = strrchr (DW_STRING (attr), ':'); | |
21161 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21162 | return ""; | |
21163 | ||
518817b3 | 21164 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
21165 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21166 | DW_STRING (attr), | |
21167 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21168 | } |
21169 | ||
fdde2d81 | 21170 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21171 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21172 | |
0114d602 DJ |
21173 | For example, if we're within the method foo() in the following |
21174 | code: | |
21175 | ||
21176 | namespace N { | |
21177 | class C { | |
21178 | void foo () { | |
21179 | } | |
21180 | }; | |
21181 | } | |
21182 | ||
21183 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21184 | |
0d5cff50 | 21185 | static const char * |
e142c38c | 21186 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21187 | { |
518817b3 SM |
21188 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21189 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
21190 | struct die_info *parent, *spec_die; |
21191 | struct dwarf2_cu *spec_cu; | |
21192 | struct type *parent_type; | |
a121b7c1 | 21193 | const char *retval; |
63d06c5c | 21194 | |
9c37b5ae | 21195 | if (cu->language != language_cplus |
c44af4eb TT |
21196 | && cu->language != language_fortran && cu->language != language_d |
21197 | && cu->language != language_rust) | |
0114d602 DJ |
21198 | return ""; |
21199 | ||
96408a79 SA |
21200 | retval = anonymous_struct_prefix (die, cu); |
21201 | if (retval) | |
21202 | return retval; | |
21203 | ||
0114d602 DJ |
21204 | /* We have to be careful in the presence of DW_AT_specification. |
21205 | For example, with GCC 3.4, given the code | |
21206 | ||
21207 | namespace N { | |
21208 | void foo() { | |
21209 | // Definition of N::foo. | |
21210 | } | |
21211 | } | |
21212 | ||
21213 | then we'll have a tree of DIEs like this: | |
21214 | ||
21215 | 1: DW_TAG_compile_unit | |
21216 | 2: DW_TAG_namespace // N | |
21217 | 3: DW_TAG_subprogram // declaration of N::foo | |
21218 | 4: DW_TAG_subprogram // definition of N::foo | |
21219 | DW_AT_specification // refers to die #3 | |
21220 | ||
21221 | Thus, when processing die #4, we have to pretend that we're in | |
21222 | the context of its DW_AT_specification, namely the contex of die | |
21223 | #3. */ | |
21224 | spec_cu = cu; | |
21225 | spec_die = die_specification (die, &spec_cu); | |
21226 | if (spec_die == NULL) | |
21227 | parent = die->parent; | |
21228 | else | |
63d06c5c | 21229 | { |
0114d602 DJ |
21230 | parent = spec_die->parent; |
21231 | cu = spec_cu; | |
63d06c5c | 21232 | } |
0114d602 DJ |
21233 | |
21234 | if (parent == NULL) | |
21235 | return ""; | |
98bfdba5 PA |
21236 | else if (parent->building_fullname) |
21237 | { | |
21238 | const char *name; | |
21239 | const char *parent_name; | |
21240 | ||
21241 | /* It has been seen on RealView 2.2 built binaries, | |
21242 | DW_TAG_template_type_param types actually _defined_ as | |
21243 | children of the parent class: | |
21244 | ||
21245 | enum E {}; | |
21246 | template class <class Enum> Class{}; | |
21247 | Class<enum E> class_e; | |
21248 | ||
21249 | 1: DW_TAG_class_type (Class) | |
21250 | 2: DW_TAG_enumeration_type (E) | |
21251 | 3: DW_TAG_enumerator (enum1:0) | |
21252 | 3: DW_TAG_enumerator (enum2:1) | |
21253 | ... | |
21254 | 2: DW_TAG_template_type_param | |
21255 | DW_AT_type DW_FORM_ref_udata (E) | |
21256 | ||
21257 | Besides being broken debug info, it can put GDB into an | |
21258 | infinite loop. Consider: | |
21259 | ||
21260 | When we're building the full name for Class<E>, we'll start | |
21261 | at Class, and go look over its template type parameters, | |
21262 | finding E. We'll then try to build the full name of E, and | |
21263 | reach here. We're now trying to build the full name of E, | |
21264 | and look over the parent DIE for containing scope. In the | |
21265 | broken case, if we followed the parent DIE of E, we'd again | |
21266 | find Class, and once again go look at its template type | |
21267 | arguments, etc., etc. Simply don't consider such parent die | |
21268 | as source-level parent of this die (it can't be, the language | |
21269 | doesn't allow it), and break the loop here. */ | |
21270 | name = dwarf2_name (die, cu); | |
21271 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21272 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21273 | name ? name : "<unknown>", |
21274 | parent_name ? parent_name : "<unknown>"); | |
21275 | return ""; | |
21276 | } | |
63d06c5c | 21277 | else |
0114d602 DJ |
21278 | switch (parent->tag) |
21279 | { | |
63d06c5c | 21280 | case DW_TAG_namespace: |
0114d602 | 21281 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21282 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21283 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21284 | Work around this problem here. */ | |
21285 | if (cu->language == language_cplus | |
e86ca25f | 21286 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 21287 | return ""; |
0114d602 | 21288 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 21289 | return TYPE_NAME (parent_type); |
63d06c5c | 21290 | case DW_TAG_class_type: |
680b30c7 | 21291 | case DW_TAG_interface_type: |
63d06c5c | 21292 | case DW_TAG_structure_type: |
0114d602 | 21293 | case DW_TAG_union_type: |
f55ee35c | 21294 | case DW_TAG_module: |
0114d602 | 21295 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
21296 | if (TYPE_NAME (parent_type) != NULL) |
21297 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
21298 | else |
21299 | /* An anonymous structure is only allowed non-static data | |
21300 | members; no typedefs, no member functions, et cetera. | |
21301 | So it does not need a prefix. */ | |
21302 | return ""; | |
abc72ce4 | 21303 | case DW_TAG_compile_unit: |
95554aad | 21304 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21305 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21306 | if (cu->language == language_cplus | |
fd5866f6 | 21307 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
21308 | && die->child != NULL |
21309 | && (die->tag == DW_TAG_class_type | |
21310 | || die->tag == DW_TAG_structure_type | |
21311 | || die->tag == DW_TAG_union_type)) | |
21312 | { | |
43816ebc | 21313 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21314 | if (name != NULL) |
21315 | return name; | |
21316 | } | |
21317 | return ""; | |
0a4b0913 AB |
21318 | case DW_TAG_subprogram: |
21319 | /* Nested subroutines in Fortran get a prefix with the name | |
21320 | of the parent's subroutine. */ | |
21321 | if (cu->language == language_fortran) | |
21322 | { | |
21323 | if ((die->tag == DW_TAG_subprogram) | |
21324 | && (dwarf2_name (parent, cu) != NULL)) | |
21325 | return dwarf2_name (parent, cu); | |
21326 | } | |
21327 | return determine_prefix (parent, cu); | |
3d567982 TT |
21328 | case DW_TAG_enumeration_type: |
21329 | parent_type = read_type_die (parent, cu); | |
21330 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21331 | { | |
e86ca25f TT |
21332 | if (TYPE_NAME (parent_type) != NULL) |
21333 | return TYPE_NAME (parent_type); | |
3d567982 TT |
21334 | return ""; |
21335 | } | |
21336 | /* Fall through. */ | |
63d06c5c | 21337 | default: |
8176b9b8 | 21338 | return determine_prefix (parent, cu); |
63d06c5c | 21339 | } |
63d06c5c DC |
21340 | } |
21341 | ||
3e43a32a MS |
21342 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21343 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21344 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21345 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21346 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21347 | |
f55ee35c | 21348 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21349 | |
21350 | static char * | |
f55ee35c JK |
21351 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21352 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21353 | { |
f55ee35c | 21354 | const char *lead = ""; |
5c315b68 | 21355 | const char *sep; |
63d06c5c | 21356 | |
3e43a32a MS |
21357 | if (suffix == NULL || suffix[0] == '\0' |
21358 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21359 | sep = ""; |
45280282 IB |
21360 | else if (cu->language == language_d) |
21361 | { | |
21362 | /* For D, the 'main' function could be defined in any module, but it | |
21363 | should never be prefixed. */ | |
21364 | if (strcmp (suffix, "D main") == 0) | |
21365 | { | |
21366 | prefix = ""; | |
21367 | sep = ""; | |
21368 | } | |
21369 | else | |
21370 | sep = "."; | |
21371 | } | |
f55ee35c JK |
21372 | else if (cu->language == language_fortran && physname) |
21373 | { | |
21374 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21375 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21376 | ||
21377 | lead = "__"; | |
21378 | sep = "_MOD_"; | |
21379 | } | |
987504bb JJ |
21380 | else |
21381 | sep = "::"; | |
63d06c5c | 21382 | |
6dd47d34 DE |
21383 | if (prefix == NULL) |
21384 | prefix = ""; | |
21385 | if (suffix == NULL) | |
21386 | suffix = ""; | |
21387 | ||
987504bb JJ |
21388 | if (obs == NULL) |
21389 | { | |
3e43a32a | 21390 | char *retval |
224c3ddb SM |
21391 | = ((char *) |
21392 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21393 | |
f55ee35c JK |
21394 | strcpy (retval, lead); |
21395 | strcat (retval, prefix); | |
6dd47d34 DE |
21396 | strcat (retval, sep); |
21397 | strcat (retval, suffix); | |
63d06c5c DC |
21398 | return retval; |
21399 | } | |
987504bb JJ |
21400 | else |
21401 | { | |
21402 | /* We have an obstack. */ | |
f55ee35c | 21403 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21404 | } |
63d06c5c DC |
21405 | } |
21406 | ||
71c25dea TT |
21407 | /* Get name of a die, return NULL if not found. */ |
21408 | ||
15d034d0 TT |
21409 | static const char * |
21410 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21411 | struct objfile *objfile) |
71c25dea TT |
21412 | { |
21413 | if (name && cu->language == language_cplus) | |
21414 | { | |
2f408ecb | 21415 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 21416 | |
2f408ecb | 21417 | if (!canon_name.empty ()) |
71c25dea | 21418 | { |
2f408ecb | 21419 | if (canon_name != name) |
be1e3d3e | 21420 | name = objfile->intern (canon_name); |
71c25dea TT |
21421 | } |
21422 | } | |
21423 | ||
21424 | return name; | |
c906108c SS |
21425 | } |
21426 | ||
96553a0c DE |
21427 | /* Get name of a die, return NULL if not found. |
21428 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21429 | |
15d034d0 | 21430 | static const char * |
e142c38c | 21431 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21432 | { |
21433 | struct attribute *attr; | |
518817b3 | 21434 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 21435 | |
e142c38c | 21436 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21437 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21438 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21439 | && die->tag != DW_TAG_class_type |
21440 | && die->tag != DW_TAG_interface_type | |
21441 | && die->tag != DW_TAG_structure_type | |
21442 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21443 | return NULL; |
21444 | ||
21445 | switch (die->tag) | |
21446 | { | |
21447 | case DW_TAG_compile_unit: | |
95554aad | 21448 | case DW_TAG_partial_unit: |
71c25dea TT |
21449 | /* Compilation units have a DW_AT_name that is a filename, not |
21450 | a source language identifier. */ | |
21451 | case DW_TAG_enumeration_type: | |
21452 | case DW_TAG_enumerator: | |
21453 | /* These tags always have simple identifiers already; no need | |
21454 | to canonicalize them. */ | |
21455 | return DW_STRING (attr); | |
907af001 | 21456 | |
96553a0c DE |
21457 | case DW_TAG_namespace: |
21458 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21459 | return DW_STRING (attr); | |
21460 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21461 | ||
907af001 UW |
21462 | case DW_TAG_class_type: |
21463 | case DW_TAG_interface_type: | |
21464 | case DW_TAG_structure_type: | |
21465 | case DW_TAG_union_type: | |
21466 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21467 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21468 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21469 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21470 | if (attr && DW_STRING (attr) |
61012eef GB |
21471 | && (startswith (DW_STRING (attr), "._") |
21472 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21473 | return NULL; |
53832f31 TT |
21474 | |
21475 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21476 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21477 | if (!attr || DW_STRING (attr) == NULL) | |
21478 | { | |
73b9be8b | 21479 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21480 | if (attr == NULL || DW_STRING (attr) == NULL) |
21481 | return NULL; | |
21482 | ||
df5c6c50 JK |
21483 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21484 | call for the same DIE. */ | |
21485 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21486 | { |
43816ebc TT |
21487 | gdb::unique_xmalloc_ptr<char> demangled |
21488 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21489 | if (demangled == nullptr) |
21490 | return nullptr; | |
43816ebc | 21491 | |
be1e3d3e | 21492 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21493 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21494 | } |
67430cd0 TT |
21495 | |
21496 | /* Strip any leading namespaces/classes, keep only the base name. | |
21497 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21498 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21499 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21500 | return &base[1]; | |
21501 | else | |
21502 | return DW_STRING (attr); | |
53832f31 | 21503 | } |
907af001 UW |
21504 | break; |
21505 | ||
71c25dea | 21506 | default: |
907af001 UW |
21507 | break; |
21508 | } | |
21509 | ||
21510 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21511 | { | |
be1e3d3e TT |
21512 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
21513 | objfile); | |
907af001 | 21514 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21515 | } |
907af001 | 21516 | return DW_STRING (attr); |
9219021c DC |
21517 | } |
21518 | ||
21519 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21520 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21521 | containing the return value on output. */ | |
9219021c DC |
21522 | |
21523 | static struct die_info * | |
f2f0e013 | 21524 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21525 | { |
21526 | struct attribute *attr; | |
9219021c | 21527 | |
f2f0e013 | 21528 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
21529 | if (attr == NULL) |
21530 | return NULL; | |
21531 | ||
f2f0e013 | 21532 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
21533 | } |
21534 | ||
f9aca02d | 21535 | static void |
d97bc12b | 21536 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
21537 | { |
21538 | unsigned int i; | |
21539 | ||
d97bc12b | 21540 | print_spaces (indent, f); |
9d8780f0 | 21541 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 21542 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 21543 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
21544 | |
21545 | if (die->parent != NULL) | |
21546 | { | |
21547 | print_spaces (indent, f); | |
9d8780f0 SM |
21548 | fprintf_unfiltered (f, " parent at offset: %s\n", |
21549 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
21550 | } |
21551 | ||
21552 | print_spaces (indent, f); | |
21553 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 21554 | dwarf_bool_name (die->child != NULL)); |
c906108c | 21555 | |
d97bc12b DE |
21556 | print_spaces (indent, f); |
21557 | fprintf_unfiltered (f, " attributes:\n"); | |
21558 | ||
c906108c SS |
21559 | for (i = 0; i < die->num_attrs; ++i) |
21560 | { | |
d97bc12b DE |
21561 | print_spaces (indent, f); |
21562 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
21563 | dwarf_attr_name (die->attrs[i].name), |
21564 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 21565 | |
c906108c SS |
21566 | switch (die->attrs[i].form) |
21567 | { | |
c906108c | 21568 | case DW_FORM_addr: |
336d760d | 21569 | case DW_FORM_addrx: |
3019eac3 | 21570 | case DW_FORM_GNU_addr_index: |
d97bc12b | 21571 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 21572 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
21573 | break; |
21574 | case DW_FORM_block2: | |
21575 | case DW_FORM_block4: | |
21576 | case DW_FORM_block: | |
21577 | case DW_FORM_block1: | |
56eb65bd SP |
21578 | fprintf_unfiltered (f, "block: size %s", |
21579 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 21580 | break; |
2dc7f7b3 | 21581 | case DW_FORM_exprloc: |
56eb65bd SP |
21582 | fprintf_unfiltered (f, "expression: size %s", |
21583 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 21584 | break; |
0224619f JK |
21585 | case DW_FORM_data16: |
21586 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
21587 | break; | |
4568ecf9 DE |
21588 | case DW_FORM_ref_addr: |
21589 | fprintf_unfiltered (f, "ref address: "); | |
21590 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21591 | break; | |
36586728 TT |
21592 | case DW_FORM_GNU_ref_alt: |
21593 | fprintf_unfiltered (f, "alt ref address: "); | |
21594 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21595 | break; | |
10b3939b DJ |
21596 | case DW_FORM_ref1: |
21597 | case DW_FORM_ref2: | |
21598 | case DW_FORM_ref4: | |
4568ecf9 DE |
21599 | case DW_FORM_ref8: |
21600 | case DW_FORM_ref_udata: | |
d97bc12b | 21601 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 21602 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 21603 | break; |
c906108c SS |
21604 | case DW_FORM_data1: |
21605 | case DW_FORM_data2: | |
21606 | case DW_FORM_data4: | |
ce5d95e1 | 21607 | case DW_FORM_data8: |
c906108c SS |
21608 | case DW_FORM_udata: |
21609 | case DW_FORM_sdata: | |
43bbcdc2 PH |
21610 | fprintf_unfiltered (f, "constant: %s", |
21611 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 21612 | break; |
2dc7f7b3 TT |
21613 | case DW_FORM_sec_offset: |
21614 | fprintf_unfiltered (f, "section offset: %s", | |
21615 | pulongest (DW_UNSND (&die->attrs[i]))); | |
21616 | break; | |
55f1336d | 21617 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
21618 | fprintf_unfiltered (f, "signature: %s", |
21619 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 21620 | break; |
c906108c | 21621 | case DW_FORM_string: |
4bdf3d34 | 21622 | case DW_FORM_strp: |
43988095 | 21623 | case DW_FORM_line_strp: |
cf532bd1 | 21624 | case DW_FORM_strx: |
3019eac3 | 21625 | case DW_FORM_GNU_str_index: |
36586728 | 21626 | case DW_FORM_GNU_strp_alt: |
8285870a | 21627 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 21628 | DW_STRING (&die->attrs[i]) |
8285870a JK |
21629 | ? DW_STRING (&die->attrs[i]) : "", |
21630 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
21631 | break; |
21632 | case DW_FORM_flag: | |
21633 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 21634 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 21635 | else |
d97bc12b | 21636 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 21637 | break; |
2dc7f7b3 TT |
21638 | case DW_FORM_flag_present: |
21639 | fprintf_unfiltered (f, "flag: TRUE"); | |
21640 | break; | |
a8329558 | 21641 | case DW_FORM_indirect: |
0963b4bd MS |
21642 | /* The reader will have reduced the indirect form to |
21643 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 21644 | fprintf_unfiltered (f, |
3e43a32a | 21645 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 21646 | break; |
663c44ac JK |
21647 | case DW_FORM_implicit_const: |
21648 | fprintf_unfiltered (f, "constant: %s", | |
21649 | plongest (DW_SND (&die->attrs[i]))); | |
21650 | break; | |
c906108c | 21651 | default: |
d97bc12b | 21652 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 21653 | die->attrs[i].form); |
d97bc12b | 21654 | break; |
c906108c | 21655 | } |
d97bc12b | 21656 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
21657 | } |
21658 | } | |
21659 | ||
f9aca02d | 21660 | static void |
d97bc12b | 21661 | dump_die_for_error (struct die_info *die) |
c906108c | 21662 | { |
d97bc12b DE |
21663 | dump_die_shallow (gdb_stderr, 0, die); |
21664 | } | |
21665 | ||
21666 | static void | |
21667 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
21668 | { | |
21669 | int indent = level * 4; | |
21670 | ||
21671 | gdb_assert (die != NULL); | |
21672 | ||
21673 | if (level >= max_level) | |
21674 | return; | |
21675 | ||
21676 | dump_die_shallow (f, indent, die); | |
21677 | ||
21678 | if (die->child != NULL) | |
c906108c | 21679 | { |
d97bc12b DE |
21680 | print_spaces (indent, f); |
21681 | fprintf_unfiltered (f, " Children:"); | |
21682 | if (level + 1 < max_level) | |
21683 | { | |
21684 | fprintf_unfiltered (f, "\n"); | |
21685 | dump_die_1 (f, level + 1, max_level, die->child); | |
21686 | } | |
21687 | else | |
21688 | { | |
3e43a32a MS |
21689 | fprintf_unfiltered (f, |
21690 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
21691 | } |
21692 | } | |
21693 | ||
21694 | if (die->sibling != NULL && level > 0) | |
21695 | { | |
21696 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
21697 | } |
21698 | } | |
21699 | ||
d97bc12b DE |
21700 | /* This is called from the pdie macro in gdbinit.in. |
21701 | It's not static so gcc will keep a copy callable from gdb. */ | |
21702 | ||
21703 | void | |
21704 | dump_die (struct die_info *die, int max_level) | |
21705 | { | |
21706 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
21707 | } | |
21708 | ||
f9aca02d | 21709 | static void |
51545339 | 21710 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21711 | { |
51545339 | 21712 | void **slot; |
c906108c | 21713 | |
9c541725 PA |
21714 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
21715 | to_underlying (die->sect_off), | |
b64f50a1 | 21716 | INSERT); |
51545339 DJ |
21717 | |
21718 | *slot = die; | |
c906108c SS |
21719 | } |
21720 | ||
348e048f DE |
21721 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
21722 | On entry *REF_CU is the CU of SRC_DIE. | |
21723 | On exit *REF_CU is the CU of the result. */ | |
21724 | ||
21725 | static struct die_info * | |
ff39bb5e | 21726 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
21727 | struct dwarf2_cu **ref_cu) |
21728 | { | |
21729 | struct die_info *die; | |
21730 | ||
cd6c91b4 | 21731 | if (attr->form_is_ref ()) |
348e048f | 21732 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 21733 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
21734 | die = follow_die_sig (src_die, attr, ref_cu); |
21735 | else | |
21736 | { | |
21737 | dump_die_for_error (src_die); | |
21738 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 21739 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
21740 | } |
21741 | ||
21742 | return die; | |
03dd20cc DJ |
21743 | } |
21744 | ||
5c631832 | 21745 | /* Follow reference OFFSET. |
673bfd45 DE |
21746 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
21747 | On exit *REF_CU is the CU of the result. | |
21748 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 21749 | |
f9aca02d | 21750 | static struct die_info * |
9c541725 | 21751 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 21752 | struct dwarf2_cu **ref_cu) |
c906108c | 21753 | { |
10b3939b | 21754 | struct die_info temp_die; |
f2f0e013 | 21755 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
21756 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21757 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 21758 | |
348e048f DE |
21759 | gdb_assert (cu->per_cu != NULL); |
21760 | ||
98bfdba5 PA |
21761 | target_cu = cu; |
21762 | ||
3019eac3 | 21763 | if (cu->per_cu->is_debug_types) |
348e048f DE |
21764 | { |
21765 | /* .debug_types CUs cannot reference anything outside their CU. | |
21766 | If they need to, they have to reference a signatured type via | |
55f1336d | 21767 | DW_FORM_ref_sig8. */ |
4057dfde | 21768 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 21769 | return NULL; |
348e048f | 21770 | } |
36586728 | 21771 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 21772 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
21773 | { |
21774 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 21775 | |
9c541725 | 21776 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 21777 | dwarf2_per_objfile); |
03dd20cc DJ |
21778 | |
21779 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 21780 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 21781 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 21782 | |
10b3939b DJ |
21783 | target_cu = per_cu->cu; |
21784 | } | |
98bfdba5 PA |
21785 | else if (cu->dies == NULL) |
21786 | { | |
21787 | /* We're loading full DIEs during partial symbol reading. */ | |
21788 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 21789 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 21790 | } |
c906108c | 21791 | |
f2f0e013 | 21792 | *ref_cu = target_cu; |
9c541725 | 21793 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
21794 | |
21795 | if (target_cu != cu) | |
21796 | target_cu->ancestor = cu; | |
21797 | ||
9a3c8263 | 21798 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
21799 | &temp_die, |
21800 | to_underlying (sect_off)); | |
5c631832 | 21801 | } |
10b3939b | 21802 | |
5c631832 JK |
21803 | /* Follow reference attribute ATTR of SRC_DIE. |
21804 | On entry *REF_CU is the CU of SRC_DIE. | |
21805 | On exit *REF_CU is the CU of the result. */ | |
21806 | ||
21807 | static struct die_info * | |
ff39bb5e | 21808 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
21809 | struct dwarf2_cu **ref_cu) |
21810 | { | |
0826b30a | 21811 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
21812 | struct dwarf2_cu *cu = *ref_cu; |
21813 | struct die_info *die; | |
21814 | ||
9c541725 | 21815 | die = follow_die_offset (sect_off, |
36586728 TT |
21816 | (attr->form == DW_FORM_GNU_ref_alt |
21817 | || cu->per_cu->is_dwz), | |
21818 | ref_cu); | |
5c631832 | 21819 | if (!die) |
9d8780f0 SM |
21820 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
21821 | "at %s [in module %s]"), | |
21822 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 21823 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 21824 | |
5c631832 JK |
21825 | return die; |
21826 | } | |
21827 | ||
d4c9a4f8 | 21828 | /* See read.h. */ |
5c631832 JK |
21829 | |
21830 | struct dwarf2_locexpr_baton | |
9c541725 | 21831 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 21832 | dwarf2_per_cu_data *per_cu, |
8b9737bf | 21833 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 21834 | void *baton, bool resolve_abstract_p) |
5c631832 | 21835 | { |
918dd910 | 21836 | struct dwarf2_cu *cu; |
5c631832 JK |
21837 | struct die_info *die; |
21838 | struct attribute *attr; | |
21839 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
21840 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
21841 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 21842 | |
918dd910 | 21843 | if (per_cu->cu == NULL) |
58f0c718 | 21844 | load_cu (per_cu, false); |
918dd910 | 21845 | cu = per_cu->cu; |
cc12ce38 DE |
21846 | if (cu == NULL) |
21847 | { | |
21848 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
21849 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
21850 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
21851 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 21852 | } |
918dd910 | 21853 | |
9c541725 | 21854 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 21855 | if (!die) |
9d8780f0 SM |
21856 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
21857 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
21858 | |
21859 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 21860 | if (!attr && resolve_abstract_p |
3360b6e7 | 21861 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
21862 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
21863 | { | |
21864 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 21865 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 21866 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 21867 | |
3360b6e7 TV |
21868 | for (const auto &cand_off |
21869 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 21870 | { |
3360b6e7 TV |
21871 | struct dwarf2_cu *cand_cu = cu; |
21872 | struct die_info *cand | |
21873 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
21874 | if (!cand | |
21875 | || !cand->parent | |
e4a62c65 TV |
21876 | || cand->parent->tag != DW_TAG_subprogram) |
21877 | continue; | |
21878 | ||
21879 | CORE_ADDR pc_low, pc_high; | |
21880 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
21881 | if (pc_low == ((CORE_ADDR) -1)) |
21882 | continue; | |
21883 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
21884 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
21885 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
21886 | continue; |
21887 | ||
21888 | die = cand; | |
21889 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21890 | break; | |
21891 | } | |
21892 | } | |
21893 | ||
5c631832 JK |
21894 | if (!attr) |
21895 | { | |
e103e986 JK |
21896 | /* DWARF: "If there is no such attribute, then there is no effect.". |
21897 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 21898 | |
e103e986 | 21899 | retval.data = NULL; |
5c631832 JK |
21900 | retval.size = 0; |
21901 | } | |
cd6c91b4 | 21902 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
21903 | { |
21904 | struct dwarf2_loclist_baton loclist_baton; | |
21905 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
21906 | size_t size; | |
21907 | ||
21908 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
21909 | ||
21910 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
21911 | &size, pc); | |
21912 | retval.size = size; | |
21913 | } | |
5c631832 JK |
21914 | else |
21915 | { | |
4fc6c0d5 | 21916 | if (!attr->form_is_block ()) |
9d8780f0 | 21917 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 21918 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 21919 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
21920 | |
21921 | retval.data = DW_BLOCK (attr)->data; | |
21922 | retval.size = DW_BLOCK (attr)->size; | |
21923 | } | |
21924 | retval.per_cu = cu->per_cu; | |
918dd910 | 21925 | |
ed2dc618 | 21926 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 21927 | |
5c631832 | 21928 | return retval; |
348e048f DE |
21929 | } |
21930 | ||
d4c9a4f8 | 21931 | /* See read.h. */ |
8b9737bf TT |
21932 | |
21933 | struct dwarf2_locexpr_baton | |
21934 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 21935 | dwarf2_per_cu_data *per_cu, |
8b9737bf TT |
21936 | CORE_ADDR (*get_frame_pc) (void *baton), |
21937 | void *baton) | |
21938 | { | |
9c541725 | 21939 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 21940 | |
9c541725 | 21941 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
21942 | } |
21943 | ||
b6807d98 TT |
21944 | /* Write a constant of a given type as target-ordered bytes into |
21945 | OBSTACK. */ | |
21946 | ||
21947 | static const gdb_byte * | |
21948 | write_constant_as_bytes (struct obstack *obstack, | |
21949 | enum bfd_endian byte_order, | |
21950 | struct type *type, | |
21951 | ULONGEST value, | |
21952 | LONGEST *len) | |
21953 | { | |
21954 | gdb_byte *result; | |
21955 | ||
21956 | *len = TYPE_LENGTH (type); | |
224c3ddb | 21957 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
21958 | store_unsigned_integer (result, *len, byte_order, value); |
21959 | ||
21960 | return result; | |
21961 | } | |
21962 | ||
d4c9a4f8 | 21963 | /* See read.h. */ |
b6807d98 TT |
21964 | |
21965 | const gdb_byte * | |
9c541725 | 21966 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 SM |
21967 | dwarf2_per_cu_data *per_cu, |
21968 | obstack *obstack, | |
b6807d98 TT |
21969 | LONGEST *len) |
21970 | { | |
21971 | struct dwarf2_cu *cu; | |
21972 | struct die_info *die; | |
21973 | struct attribute *attr; | |
21974 | const gdb_byte *result = NULL; | |
21975 | struct type *type; | |
21976 | LONGEST value; | |
21977 | enum bfd_endian byte_order; | |
e3b94546 | 21978 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 21979 | |
b6807d98 | 21980 | if (per_cu->cu == NULL) |
58f0c718 | 21981 | load_cu (per_cu, false); |
b6807d98 | 21982 | cu = per_cu->cu; |
cc12ce38 DE |
21983 | if (cu == NULL) |
21984 | { | |
21985 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
21986 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
21987 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
21988 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 21989 | } |
b6807d98 | 21990 | |
9c541725 | 21991 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 21992 | if (!die) |
9d8780f0 SM |
21993 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
21994 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
21995 | |
21996 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21997 | if (attr == NULL) | |
21998 | return NULL; | |
21999 | ||
e3b94546 | 22000 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22001 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22002 | ||
22003 | switch (attr->form) | |
22004 | { | |
22005 | case DW_FORM_addr: | |
336d760d | 22006 | case DW_FORM_addrx: |
b6807d98 TT |
22007 | case DW_FORM_GNU_addr_index: |
22008 | { | |
22009 | gdb_byte *tem; | |
22010 | ||
22011 | *len = cu->header.addr_size; | |
224c3ddb | 22012 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22013 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22014 | result = tem; | |
22015 | } | |
22016 | break; | |
22017 | case DW_FORM_string: | |
22018 | case DW_FORM_strp: | |
cf532bd1 | 22019 | case DW_FORM_strx: |
b6807d98 TT |
22020 | case DW_FORM_GNU_str_index: |
22021 | case DW_FORM_GNU_strp_alt: | |
22022 | /* DW_STRING is already allocated on the objfile obstack, point | |
22023 | directly to it. */ | |
22024 | result = (const gdb_byte *) DW_STRING (attr); | |
22025 | *len = strlen (DW_STRING (attr)); | |
22026 | break; | |
22027 | case DW_FORM_block1: | |
22028 | case DW_FORM_block2: | |
22029 | case DW_FORM_block4: | |
22030 | case DW_FORM_block: | |
22031 | case DW_FORM_exprloc: | |
0224619f | 22032 | case DW_FORM_data16: |
b6807d98 TT |
22033 | result = DW_BLOCK (attr)->data; |
22034 | *len = DW_BLOCK (attr)->size; | |
22035 | break; | |
22036 | ||
22037 | /* The DW_AT_const_value attributes are supposed to carry the | |
22038 | symbol's value "represented as it would be on the target | |
22039 | architecture." By the time we get here, it's already been | |
22040 | converted to host endianness, so we just need to sign- or | |
22041 | zero-extend it as appropriate. */ | |
22042 | case DW_FORM_data1: | |
22043 | type = die_type (die, cu); | |
22044 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22045 | if (result == NULL) | |
22046 | result = write_constant_as_bytes (obstack, byte_order, | |
22047 | type, value, len); | |
22048 | break; | |
22049 | case DW_FORM_data2: | |
22050 | type = die_type (die, cu); | |
22051 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22052 | if (result == NULL) | |
22053 | result = write_constant_as_bytes (obstack, byte_order, | |
22054 | type, value, len); | |
22055 | break; | |
22056 | case DW_FORM_data4: | |
22057 | type = die_type (die, cu); | |
22058 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22059 | if (result == NULL) | |
22060 | result = write_constant_as_bytes (obstack, byte_order, | |
22061 | type, value, len); | |
22062 | break; | |
22063 | case DW_FORM_data8: | |
22064 | type = die_type (die, cu); | |
22065 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22066 | if (result == NULL) | |
22067 | result = write_constant_as_bytes (obstack, byte_order, | |
22068 | type, value, len); | |
22069 | break; | |
22070 | ||
22071 | case DW_FORM_sdata: | |
663c44ac | 22072 | case DW_FORM_implicit_const: |
b6807d98 TT |
22073 | type = die_type (die, cu); |
22074 | result = write_constant_as_bytes (obstack, byte_order, | |
22075 | type, DW_SND (attr), len); | |
22076 | break; | |
22077 | ||
22078 | case DW_FORM_udata: | |
22079 | type = die_type (die, cu); | |
22080 | result = write_constant_as_bytes (obstack, byte_order, | |
22081 | type, DW_UNSND (attr), len); | |
22082 | break; | |
22083 | ||
22084 | default: | |
b98664d3 | 22085 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22086 | dwarf_form_name (attr->form)); |
22087 | break; | |
22088 | } | |
22089 | ||
22090 | return result; | |
22091 | } | |
22092 | ||
d4c9a4f8 | 22093 | /* See read.h. */ |
7942e96e AA |
22094 | |
22095 | struct type * | |
9c541725 | 22096 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22097 | dwarf2_per_cu_data *per_cu) |
7942e96e AA |
22098 | { |
22099 | struct dwarf2_cu *cu; | |
22100 | struct die_info *die; | |
22101 | ||
7942e96e | 22102 | if (per_cu->cu == NULL) |
58f0c718 | 22103 | load_cu (per_cu, false); |
7942e96e AA |
22104 | cu = per_cu->cu; |
22105 | if (!cu) | |
22106 | return NULL; | |
22107 | ||
9c541725 | 22108 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22109 | if (!die) |
22110 | return NULL; | |
22111 | ||
22112 | return die_type (die, cu); | |
22113 | } | |
22114 | ||
8cb5117c | 22115 | /* See read.h. */ |
8a9b8146 TT |
22116 | |
22117 | struct type * | |
b64f50a1 | 22118 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
22119 | struct dwarf2_per_cu_data *per_cu) |
22120 | { | |
9c541725 | 22121 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 22122 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
22123 | } |
22124 | ||
ac9ec31b | 22125 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22126 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22127 | On exit *REF_CU is the CU of the result. |
22128 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22129 | |
22130 | static struct die_info * | |
ac9ec31b DE |
22131 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22132 | struct dwarf2_cu **ref_cu) | |
348e048f | 22133 | { |
348e048f | 22134 | struct die_info temp_die; |
c24bdb02 | 22135 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
22136 | struct die_info *die; |
22137 | ||
ac9ec31b DE |
22138 | /* While it might be nice to assert sig_type->type == NULL here, |
22139 | we can get here for DW_AT_imported_declaration where we need | |
22140 | the DIE not the type. */ | |
348e048f DE |
22141 | |
22142 | /* If necessary, add it to the queue and load its DIEs. */ | |
22143 | ||
95554aad | 22144 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 22145 | read_signatured_type (sig_type); |
348e048f | 22146 | |
348e048f | 22147 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 22148 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22149 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22150 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22151 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22152 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22153 | if (die) |
22154 | { | |
ed2dc618 | 22155 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 22156 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 22157 | |
796a7ff8 DE |
22158 | /* For .gdb_index version 7 keep track of included TUs. |
22159 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
22160 | if (dwarf2_per_objfile->index_table != NULL | |
22161 | && dwarf2_per_objfile->index_table->version <= 7) | |
22162 | { | |
ae640021 | 22163 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22164 | } |
22165 | ||
348e048f | 22166 | *ref_cu = sig_cu; |
c24bdb02 KS |
22167 | if (sig_cu != cu) |
22168 | sig_cu->ancestor = cu; | |
22169 | ||
348e048f DE |
22170 | return die; |
22171 | } | |
22172 | ||
ac9ec31b DE |
22173 | return NULL; |
22174 | } | |
22175 | ||
22176 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22177 | On entry *REF_CU is the CU of SRC_DIE. | |
22178 | On exit *REF_CU is the CU of the result. | |
22179 | The result is the DIE of the type. | |
22180 | If the referenced type cannot be found an error is thrown. */ | |
22181 | ||
22182 | static struct die_info * | |
ff39bb5e | 22183 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22184 | struct dwarf2_cu **ref_cu) |
22185 | { | |
22186 | ULONGEST signature = DW_SIGNATURE (attr); | |
22187 | struct signatured_type *sig_type; | |
22188 | struct die_info *die; | |
22189 | ||
22190 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22191 | ||
a2ce51a0 | 22192 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22193 | /* sig_type will be NULL if the signatured type is missing from |
22194 | the debug info. */ | |
22195 | if (sig_type == NULL) | |
22196 | { | |
22197 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22198 | " from DIE at %s [in module %s]"), |
22199 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22200 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22201 | } |
22202 | ||
22203 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22204 | if (die == NULL) | |
22205 | { | |
22206 | dump_die_for_error (src_die); | |
22207 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22208 | " from DIE at %s [in module %s]"), |
22209 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22210 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22211 | } |
22212 | ||
22213 | return die; | |
22214 | } | |
22215 | ||
22216 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22217 | reading in and processing the type unit if necessary. */ | |
22218 | ||
22219 | static struct type * | |
22220 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22221 | struct dwarf2_cu *cu) | |
22222 | { | |
518817b3 SM |
22223 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22224 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22225 | struct signatured_type *sig_type; |
22226 | struct dwarf2_cu *type_cu; | |
22227 | struct die_info *type_die; | |
22228 | struct type *type; | |
22229 | ||
a2ce51a0 | 22230 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22231 | /* sig_type will be NULL if the signatured type is missing from |
22232 | the debug info. */ | |
22233 | if (sig_type == NULL) | |
22234 | { | |
b98664d3 | 22235 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22236 | " from DIE at %s [in module %s]"), |
22237 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22238 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22239 | return build_error_marker_type (cu, die); |
22240 | } | |
22241 | ||
22242 | /* If we already know the type we're done. */ | |
22243 | if (sig_type->type != NULL) | |
22244 | return sig_type->type; | |
22245 | ||
22246 | type_cu = cu; | |
22247 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22248 | if (type_die != NULL) | |
22249 | { | |
22250 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22251 | is created. This is important, for example, because for c++ classes | |
22252 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22253 | type = read_type_die (type_die, type_cu); | |
22254 | if (type == NULL) | |
22255 | { | |
b98664d3 | 22256 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22257 | " referenced from DIE at %s [in module %s]"), |
22258 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22259 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22260 | type = build_error_marker_type (cu, die); |
22261 | } | |
22262 | } | |
22263 | else | |
22264 | { | |
b98664d3 | 22265 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22266 | " from DIE at %s [in module %s]"), |
22267 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22268 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22269 | type = build_error_marker_type (cu, die); |
22270 | } | |
22271 | sig_type->type = type; | |
22272 | ||
22273 | return type; | |
22274 | } | |
22275 | ||
22276 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22277 | reading in and processing the type unit if necessary. */ | |
22278 | ||
22279 | static struct type * | |
ff39bb5e | 22280 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22281 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22282 | { |
22283 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22284 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22285 | { |
22286 | struct dwarf2_cu *type_cu = cu; | |
22287 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22288 | ||
22289 | return read_type_die (type_die, type_cu); | |
22290 | } | |
22291 | else if (attr->form == DW_FORM_ref_sig8) | |
22292 | { | |
22293 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22294 | } | |
22295 | else | |
22296 | { | |
518817b3 SM |
22297 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22298 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22299 | |
b98664d3 | 22300 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22301 | " at %s [in module %s]"), |
22302 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22303 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22304 | return build_error_marker_type (cu, die); |
22305 | } | |
348e048f DE |
22306 | } |
22307 | ||
e5fe5e75 | 22308 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22309 | |
22310 | static void | |
e5fe5e75 | 22311 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 22312 | { |
52dc124a | 22313 | struct signatured_type *sig_type; |
348e048f | 22314 | |
f4dc4d17 | 22315 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22316 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22317 | |
6721b2ec DE |
22318 | /* We have the per_cu, but we need the signatured_type. |
22319 | Fortunately this is an easy translation. */ | |
22320 | gdb_assert (per_cu->is_debug_types); | |
22321 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22322 | |
6721b2ec | 22323 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22324 | |
52dc124a | 22325 | read_signatured_type (sig_type); |
348e048f | 22326 | |
6721b2ec | 22327 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22328 | } |
22329 | ||
3019eac3 DE |
22330 | /* Read in a signatured type and build its CU and DIEs. |
22331 | If the type is a stub for the real type in a DWO file, | |
22332 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22333 | |
22334 | static void | |
22335 | read_signatured_type (struct signatured_type *sig_type) | |
22336 | { | |
22337 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22338 | |
3019eac3 | 22339 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22340 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22341 | |
6751ebae | 22342 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
22343 | |
22344 | if (!reader.dummy_p) | |
22345 | { | |
22346 | struct dwarf2_cu *cu = reader.cu; | |
22347 | const gdb_byte *info_ptr = reader.info_ptr; | |
22348 | ||
22349 | gdb_assert (cu->die_hash == NULL); | |
22350 | cu->die_hash = | |
22351 | htab_create_alloc_ex (cu->header.length / 12, | |
22352 | die_hash, | |
22353 | die_eq, | |
22354 | NULL, | |
22355 | &cu->comp_unit_obstack, | |
22356 | hashtab_obstack_allocate, | |
22357 | dummy_obstack_deallocate); | |
22358 | ||
3e225074 | 22359 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22360 | reader.comp_unit_die->child |
22361 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22362 | reader.comp_unit_die); | |
22363 | cu->dies = reader.comp_unit_die; | |
22364 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22365 | ||
22366 | /* We try not to read any attributes in this function, because | |
22367 | not all CUs needed for references have been loaded yet, and | |
22368 | symbol table processing isn't initialized. But we have to | |
22369 | set the CU language, or we won't be able to build types | |
22370 | correctly. Similarly, if we do not read the producer, we can | |
22371 | not apply producer-specific interpretation. */ | |
22372 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22373 | |
22374 | reader.keep (); | |
c0ab21c2 TT |
22375 | } |
22376 | ||
7ee85ab1 | 22377 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22378 | } |
22379 | ||
c906108c SS |
22380 | /* Decode simple location descriptions. |
22381 | Given a pointer to a dwarf block that defines a location, compute | |
22382 | the location and return the value. | |
22383 | ||
4cecd739 DJ |
22384 | NOTE drow/2003-11-18: This function is called in two situations |
22385 | now: for the address of static or global variables (partial symbols | |
22386 | only) and for offsets into structures which are expected to be | |
22387 | (more or less) constant. The partial symbol case should go away, | |
22388 | and only the constant case should remain. That will let this | |
22389 | function complain more accurately. A few special modes are allowed | |
22390 | without complaint for global variables (for instance, global | |
22391 | register values and thread-local values). | |
c906108c SS |
22392 | |
22393 | A location description containing no operations indicates that the | |
4cecd739 | 22394 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
22395 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
22396 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
22397 | complaint. |
22398 | ||
22399 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
22400 | |
22401 | static CORE_ADDR | |
e7c27a73 | 22402 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 22403 | { |
518817b3 | 22404 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
22405 | size_t i; |
22406 | size_t size = blk->size; | |
d521ce57 | 22407 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22408 | CORE_ADDR stack[64]; |
22409 | int stacki; | |
22410 | unsigned int bytes_read, unsnd; | |
22411 | gdb_byte op; | |
c906108c | 22412 | |
21ae7a4d JK |
22413 | i = 0; |
22414 | stacki = 0; | |
22415 | stack[stacki] = 0; | |
22416 | stack[++stacki] = 0; | |
22417 | ||
22418 | while (i < size) | |
22419 | { | |
22420 | op = data[i++]; | |
22421 | switch (op) | |
22422 | { | |
22423 | case DW_OP_lit0: | |
22424 | case DW_OP_lit1: | |
22425 | case DW_OP_lit2: | |
22426 | case DW_OP_lit3: | |
22427 | case DW_OP_lit4: | |
22428 | case DW_OP_lit5: | |
22429 | case DW_OP_lit6: | |
22430 | case DW_OP_lit7: | |
22431 | case DW_OP_lit8: | |
22432 | case DW_OP_lit9: | |
22433 | case DW_OP_lit10: | |
22434 | case DW_OP_lit11: | |
22435 | case DW_OP_lit12: | |
22436 | case DW_OP_lit13: | |
22437 | case DW_OP_lit14: | |
22438 | case DW_OP_lit15: | |
22439 | case DW_OP_lit16: | |
22440 | case DW_OP_lit17: | |
22441 | case DW_OP_lit18: | |
22442 | case DW_OP_lit19: | |
22443 | case DW_OP_lit20: | |
22444 | case DW_OP_lit21: | |
22445 | case DW_OP_lit22: | |
22446 | case DW_OP_lit23: | |
22447 | case DW_OP_lit24: | |
22448 | case DW_OP_lit25: | |
22449 | case DW_OP_lit26: | |
22450 | case DW_OP_lit27: | |
22451 | case DW_OP_lit28: | |
22452 | case DW_OP_lit29: | |
22453 | case DW_OP_lit30: | |
22454 | case DW_OP_lit31: | |
22455 | stack[++stacki] = op - DW_OP_lit0; | |
22456 | break; | |
f1bea926 | 22457 | |
21ae7a4d JK |
22458 | case DW_OP_reg0: |
22459 | case DW_OP_reg1: | |
22460 | case DW_OP_reg2: | |
22461 | case DW_OP_reg3: | |
22462 | case DW_OP_reg4: | |
22463 | case DW_OP_reg5: | |
22464 | case DW_OP_reg6: | |
22465 | case DW_OP_reg7: | |
22466 | case DW_OP_reg8: | |
22467 | case DW_OP_reg9: | |
22468 | case DW_OP_reg10: | |
22469 | case DW_OP_reg11: | |
22470 | case DW_OP_reg12: | |
22471 | case DW_OP_reg13: | |
22472 | case DW_OP_reg14: | |
22473 | case DW_OP_reg15: | |
22474 | case DW_OP_reg16: | |
22475 | case DW_OP_reg17: | |
22476 | case DW_OP_reg18: | |
22477 | case DW_OP_reg19: | |
22478 | case DW_OP_reg20: | |
22479 | case DW_OP_reg21: | |
22480 | case DW_OP_reg22: | |
22481 | case DW_OP_reg23: | |
22482 | case DW_OP_reg24: | |
22483 | case DW_OP_reg25: | |
22484 | case DW_OP_reg26: | |
22485 | case DW_OP_reg27: | |
22486 | case DW_OP_reg28: | |
22487 | case DW_OP_reg29: | |
22488 | case DW_OP_reg30: | |
22489 | case DW_OP_reg31: | |
22490 | stack[++stacki] = op - DW_OP_reg0; | |
22491 | if (i < size) | |
22492 | dwarf2_complex_location_expr_complaint (); | |
22493 | break; | |
c906108c | 22494 | |
21ae7a4d JK |
22495 | case DW_OP_regx: |
22496 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22497 | i += bytes_read; | |
22498 | stack[++stacki] = unsnd; | |
22499 | if (i < size) | |
22500 | dwarf2_complex_location_expr_complaint (); | |
22501 | break; | |
c906108c | 22502 | |
21ae7a4d | 22503 | case DW_OP_addr: |
c8a7a66f TT |
22504 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22505 | &bytes_read); | |
21ae7a4d JK |
22506 | i += bytes_read; |
22507 | break; | |
d53d4ac5 | 22508 | |
21ae7a4d JK |
22509 | case DW_OP_const1u: |
22510 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22511 | i += 1; | |
22512 | break; | |
22513 | ||
22514 | case DW_OP_const1s: | |
22515 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22516 | i += 1; | |
22517 | break; | |
22518 | ||
22519 | case DW_OP_const2u: | |
22520 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
22521 | i += 2; | |
22522 | break; | |
22523 | ||
22524 | case DW_OP_const2s: | |
22525 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
22526 | i += 2; | |
22527 | break; | |
d53d4ac5 | 22528 | |
21ae7a4d JK |
22529 | case DW_OP_const4u: |
22530 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
22531 | i += 4; | |
22532 | break; | |
22533 | ||
22534 | case DW_OP_const4s: | |
22535 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
22536 | i += 4; | |
22537 | break; | |
22538 | ||
585861ea JK |
22539 | case DW_OP_const8u: |
22540 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
22541 | i += 8; | |
22542 | break; | |
22543 | ||
21ae7a4d JK |
22544 | case DW_OP_constu: |
22545 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
22546 | &bytes_read); | |
22547 | i += bytes_read; | |
22548 | break; | |
22549 | ||
22550 | case DW_OP_consts: | |
22551 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
22552 | i += bytes_read; | |
22553 | break; | |
22554 | ||
22555 | case DW_OP_dup: | |
22556 | stack[stacki + 1] = stack[stacki]; | |
22557 | stacki++; | |
22558 | break; | |
22559 | ||
22560 | case DW_OP_plus: | |
22561 | stack[stacki - 1] += stack[stacki]; | |
22562 | stacki--; | |
22563 | break; | |
22564 | ||
22565 | case DW_OP_plus_uconst: | |
22566 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
22567 | &bytes_read); | |
22568 | i += bytes_read; | |
22569 | break; | |
22570 | ||
22571 | case DW_OP_minus: | |
22572 | stack[stacki - 1] -= stack[stacki]; | |
22573 | stacki--; | |
22574 | break; | |
22575 | ||
22576 | case DW_OP_deref: | |
22577 | /* If we're not the last op, then we definitely can't encode | |
22578 | this using GDB's address_class enum. This is valid for partial | |
22579 | global symbols, although the variable's address will be bogus | |
22580 | in the psymtab. */ | |
22581 | if (i < size) | |
22582 | dwarf2_complex_location_expr_complaint (); | |
22583 | break; | |
22584 | ||
22585 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 22586 | case DW_OP_form_tls_address: |
21ae7a4d JK |
22587 | /* The top of the stack has the offset from the beginning |
22588 | of the thread control block at which the variable is located. */ | |
22589 | /* Nothing should follow this operator, so the top of stack would | |
22590 | be returned. */ | |
22591 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
22592 | address will be bogus in the psymtab. Make it always at least |
22593 | non-zero to not look as a variable garbage collected by linker | |
22594 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
22595 | if (i < size) |
22596 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 22597 | stack[stacki]++; |
21ae7a4d JK |
22598 | break; |
22599 | ||
22600 | case DW_OP_GNU_uninit: | |
22601 | break; | |
22602 | ||
336d760d | 22603 | case DW_OP_addrx: |
3019eac3 | 22604 | case DW_OP_GNU_addr_index: |
49f6c839 | 22605 | case DW_OP_GNU_const_index: |
3019eac3 DE |
22606 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
22607 | &bytes_read); | |
22608 | i += bytes_read; | |
22609 | break; | |
22610 | ||
21ae7a4d JK |
22611 | default: |
22612 | { | |
f39c6ffd | 22613 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
22614 | |
22615 | if (name) | |
b98664d3 | 22616 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
22617 | name); |
22618 | else | |
b98664d3 | 22619 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
22620 | op); |
22621 | } | |
22622 | ||
22623 | return (stack[stacki]); | |
d53d4ac5 | 22624 | } |
3c6e0cb3 | 22625 | |
21ae7a4d JK |
22626 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
22627 | outside of the allocated space. Also enforce minimum>0. */ | |
22628 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
22629 | { | |
b98664d3 | 22630 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
22631 | return 0; |
22632 | } | |
22633 | ||
22634 | if (stacki <= 0) | |
22635 | { | |
b98664d3 | 22636 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
22637 | return 0; |
22638 | } | |
22639 | } | |
22640 | return (stack[stacki]); | |
c906108c SS |
22641 | } |
22642 | ||
22643 | /* memory allocation interface */ | |
22644 | ||
c906108c | 22645 | static struct dwarf_block * |
7b5a2f43 | 22646 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 22647 | { |
8d749320 | 22648 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
22649 | } |
22650 | ||
c906108c | 22651 | static struct die_info * |
b60c80d6 | 22652 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
22653 | { |
22654 | struct die_info *die; | |
b60c80d6 DJ |
22655 | size_t size = sizeof (struct die_info); |
22656 | ||
22657 | if (num_attrs > 1) | |
22658 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 22659 | |
b60c80d6 | 22660 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
22661 | memset (die, 0, sizeof (struct die_info)); |
22662 | return (die); | |
22663 | } | |
2e276125 JB |
22664 | |
22665 | \f | |
a036ba48 | 22666 | |
c90ec28a | 22667 | /* Macro support. */ |
cf2c3c16 | 22668 | |
9eac9650 TT |
22669 | /* An overload of dwarf_decode_macros that finds the correct section |
22670 | and ensures it is read in before calling the other overload. */ | |
22671 | ||
22672 | static void | |
22673 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
22674 | int section_is_gnu) | |
22675 | { | |
22676 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
22677 | = cu->per_cu->dwarf2_per_objfile; | |
22678 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5a0e026f | 22679 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
22680 | unsigned int offset_size = cu->header.offset_size; |
22681 | struct dwarf2_section_info *section; | |
22682 | const char *section_name; | |
22683 | ||
22684 | if (cu->dwo_unit != nullptr) | |
22685 | { | |
22686 | if (section_is_gnu) | |
22687 | { | |
22688 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
22689 | section_name = ".debug_macro.dwo"; | |
22690 | } | |
22691 | else | |
22692 | { | |
22693 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
22694 | section_name = ".debug_macinfo.dwo"; | |
22695 | } | |
22696 | } | |
22697 | else | |
22698 | { | |
22699 | if (section_is_gnu) | |
22700 | { | |
22701 | section = &dwarf2_per_objfile->macro; | |
22702 | section_name = ".debug_macro"; | |
22703 | } | |
22704 | else | |
22705 | { | |
22706 | section = &dwarf2_per_objfile->macinfo; | |
22707 | section_name = ".debug_macinfo"; | |
22708 | } | |
22709 | } | |
22710 | ||
22711 | section->read (objfile); | |
22712 | if (section->buffer == nullptr) | |
22713 | { | |
22714 | complaint (_("missing %s section"), section_name); | |
22715 | return; | |
22716 | } | |
22717 | ||
22718 | buildsym_compunit *builder = cu->get_builder (); | |
22719 | ||
22720 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
22721 | offset_size, offset, section_is_gnu); | |
22722 | } | |
22723 | ||
3019eac3 DE |
22724 | /* Return the .debug_loc section to use for CU. |
22725 | For DWO files use .debug_loc.dwo. */ | |
22726 | ||
22727 | static struct dwarf2_section_info * | |
22728 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
22729 | { | |
518817b3 SM |
22730 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22731 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22732 | |
3019eac3 | 22733 | if (cu->dwo_unit) |
43988095 JK |
22734 | { |
22735 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 22736 | |
43988095 JK |
22737 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
22738 | } | |
22739 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
22740 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
22741 | } |
22742 | ||
8cf6f0b1 TT |
22743 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
22744 | ||
22745 | static void | |
22746 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
22747 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 22748 | const struct attribute *attr) |
8cf6f0b1 | 22749 | { |
518817b3 SM |
22750 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22751 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
22752 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
22753 | ||
96b79293 | 22754 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
22755 | |
22756 | baton->per_cu = cu->per_cu; | |
22757 | gdb_assert (baton->per_cu); | |
22758 | /* We don't know how long the location list is, but make sure we | |
22759 | don't run off the edge of the section. */ | |
3019eac3 DE |
22760 | baton->size = section->size - DW_UNSND (attr); |
22761 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
22762 | if (cu->base_address.has_value ()) |
22763 | baton->base_address = *cu->base_address; | |
22764 | else | |
22765 | baton->base_address = 0; | |
f664829e | 22766 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
22767 | } |
22768 | ||
4c2df51b | 22769 | static void |
ff39bb5e | 22770 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 22771 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 22772 | { |
518817b3 SM |
22773 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22774 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 22775 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 22776 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 22777 | |
cd6c91b4 | 22778 | if (attr->form_is_section_offset () |
3019eac3 | 22779 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
22780 | the section. If so, fall through to the complaint in the |
22781 | other branch. */ | |
2c7d5afc | 22782 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 22783 | { |
0d53c4c4 | 22784 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 22785 | |
8d749320 | 22786 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 22787 | |
8cf6f0b1 | 22788 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 22789 | |
2b24b6e4 | 22790 | if (!cu->base_address.has_value ()) |
b98664d3 | 22791 | complaint (_("Location list used without " |
3e43a32a | 22792 | "specifying the CU base address.")); |
4c2df51b | 22793 | |
f1e6e072 TT |
22794 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22795 | ? dwarf2_loclist_block_index | |
22796 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
22797 | SYMBOL_LOCATION_BATON (sym) = baton; |
22798 | } | |
22799 | else | |
22800 | { | |
22801 | struct dwarf2_locexpr_baton *baton; | |
22802 | ||
8d749320 | 22803 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
22804 | baton->per_cu = cu->per_cu; |
22805 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 22806 | |
4fc6c0d5 | 22807 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
22808 | { |
22809 | /* Note that we're just copying the block's data pointer | |
22810 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
22811 | info_buffer for SYM's objfile; right now we never release |
22812 | that buffer, but when we do clean up properly this may | |
22813 | need to change. */ | |
0d53c4c4 DJ |
22814 | baton->size = DW_BLOCK (attr)->size; |
22815 | baton->data = DW_BLOCK (attr)->data; | |
22816 | } | |
22817 | else | |
22818 | { | |
22819 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 22820 | sym->natural_name ()); |
0d53c4c4 | 22821 | baton->size = 0; |
0d53c4c4 | 22822 | } |
6e70227d | 22823 | |
f1e6e072 TT |
22824 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22825 | ? dwarf2_locexpr_block_index | |
22826 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
22827 | SYMBOL_LOCATION_BATON (sym) = baton; |
22828 | } | |
4c2df51b | 22829 | } |
6502dd73 | 22830 | |
09ba997f | 22831 | /* See read.h. */ |
ae0d2f24 UW |
22832 | |
22833 | struct objfile * | |
09ba997f | 22834 | dwarf2_per_cu_data::objfile () const |
ae0d2f24 | 22835 | { |
09ba997f | 22836 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
22837 | |
22838 | /* Return the master objfile, so that we can report and look up the | |
22839 | correct file containing this variable. */ | |
22840 | if (objfile->separate_debug_objfile_backlink) | |
22841 | objfile = objfile->separate_debug_objfile_backlink; | |
22842 | ||
22843 | return objfile; | |
22844 | } | |
22845 | ||
96408a79 SA |
22846 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
22847 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
22848 | CU_HEADERP first. */ | |
22849 | ||
22850 | static const struct comp_unit_head * | |
22851 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 22852 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 22853 | { |
d521ce57 | 22854 | const gdb_byte *info_ptr; |
96408a79 SA |
22855 | |
22856 | if (per_cu->cu) | |
22857 | return &per_cu->cu->header; | |
22858 | ||
9c541725 | 22859 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
22860 | |
22861 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
22862 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
22863 | rcuh_kind::COMPILE); | |
96408a79 SA |
22864 | |
22865 | return cu_headerp; | |
22866 | } | |
22867 | ||
09ba997f | 22868 | /* See read.h. */ |
ae0d2f24 | 22869 | |
98714339 | 22870 | int |
09ba997f | 22871 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 22872 | { |
96408a79 SA |
22873 | struct comp_unit_head cu_header_local; |
22874 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 22875 | |
09ba997f | 22876 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22877 | |
22878 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
22879 | } |
22880 | ||
09ba997f | 22881 | /* See read.h. */ |
9eae7c52 TT |
22882 | |
22883 | int | |
09ba997f | 22884 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 22885 | { |
96408a79 SA |
22886 | struct comp_unit_head cu_header_local; |
22887 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 22888 | |
09ba997f | 22889 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22890 | |
22891 | return cu_headerp->offset_size; | |
22892 | } | |
22893 | ||
09ba997f | 22894 | /* See read.h. */ |
96408a79 SA |
22895 | |
22896 | int | |
09ba997f | 22897 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
22898 | { |
22899 | struct comp_unit_head cu_header_local; | |
22900 | const struct comp_unit_head *cu_headerp; | |
22901 | ||
09ba997f | 22902 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22903 | |
22904 | if (cu_headerp->version == 2) | |
22905 | return cu_headerp->addr_size; | |
22906 | else | |
22907 | return cu_headerp->offset_size; | |
181cebd4 JK |
22908 | } |
22909 | ||
09ba997f | 22910 | /* See read.h. */ |
9aa1f1e3 TT |
22911 | |
22912 | CORE_ADDR | |
09ba997f | 22913 | dwarf2_per_cu_data::text_offset () const |
9aa1f1e3 | 22914 | { |
09ba997f TT |
22915 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
22916 | ||
22917 | return objfile->text_section_offset (); | |
9aa1f1e3 TT |
22918 | } |
22919 | ||
09ba997f TT |
22920 | /* See read.h. */ |
22921 | ||
22922 | struct type * | |
22923 | dwarf2_per_cu_data::addr_type () const | |
9a49df9d | 22924 | { |
09ba997f | 22925 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
22926 | struct type *void_type = objfile_type (objfile)->builtin_void; |
22927 | struct type *addr_type = lookup_pointer_type (void_type); | |
09ba997f | 22928 | int addr_size = this->addr_size (); |
9a49df9d AB |
22929 | |
22930 | if (TYPE_LENGTH (addr_type) == addr_size) | |
22931 | return addr_type; | |
22932 | ||
09ba997f | 22933 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
22934 | return addr_type; |
22935 | } | |
22936 | ||
22b6cd70 TT |
22937 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
22938 | the index of the result, and that searches a vector. It will | |
22939 | return a result even if the offset in question does not actually | |
22940 | occur in any CU. This is separate so that it can be unit | |
22941 | tested. */ | |
ae038cb0 | 22942 | |
22b6cd70 TT |
22943 | static int |
22944 | dwarf2_find_containing_comp_unit | |
22945 | (sect_offset sect_off, | |
22946 | unsigned int offset_in_dwz, | |
22947 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 22948 | { |
ae038cb0 DJ |
22949 | int low, high; |
22950 | ||
ae038cb0 | 22951 | low = 0; |
22b6cd70 | 22952 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
22953 | while (high > low) |
22954 | { | |
36586728 | 22955 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 22956 | int mid = low + (high - low) / 2; |
9a619af0 | 22957 | |
22b6cd70 | 22958 | mid_cu = all_comp_units[mid]; |
36586728 | 22959 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 22960 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 22961 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
22962 | high = mid; |
22963 | else | |
22964 | low = mid + 1; | |
22965 | } | |
22966 | gdb_assert (low == high); | |
22b6cd70 TT |
22967 | return low; |
22968 | } | |
22969 | ||
22970 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
22971 | the DIE at OFFSET. Raises an error on failure. */ | |
22972 | ||
22973 | static struct dwarf2_per_cu_data * | |
22974 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
22975 | unsigned int offset_in_dwz, | |
22976 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
22977 | { | |
22978 | int low | |
22979 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
22980 | dwarf2_per_objfile->all_comp_units); | |
22981 | struct dwarf2_per_cu_data *this_cu | |
22982 | = dwarf2_per_objfile->all_comp_units[low]; | |
22983 | ||
45b8ae0c | 22984 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 22985 | { |
36586728 | 22986 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 22987 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
22988 | "offset %s [in module %s]"), |
22989 | sect_offset_str (sect_off), | |
ed2dc618 | 22990 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 22991 | |
9c541725 PA |
22992 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
22993 | <= sect_off); | |
ae038cb0 DJ |
22994 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22995 | } | |
22996 | else | |
22997 | { | |
b76e467d | 22998 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 22999 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23000 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23001 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23002 | return this_cu; |
23003 | } | |
23004 | } | |
23005 | ||
22b6cd70 TT |
23006 | #if GDB_SELF_TEST |
23007 | ||
23008 | namespace selftests { | |
23009 | namespace find_containing_comp_unit { | |
23010 | ||
23011 | static void | |
23012 | run_test () | |
23013 | { | |
23014 | struct dwarf2_per_cu_data one {}; | |
23015 | struct dwarf2_per_cu_data two {}; | |
23016 | struct dwarf2_per_cu_data three {}; | |
23017 | struct dwarf2_per_cu_data four {}; | |
23018 | ||
23019 | one.length = 5; | |
23020 | two.sect_off = sect_offset (one.length); | |
23021 | two.length = 7; | |
23022 | ||
23023 | three.length = 5; | |
23024 | three.is_dwz = 1; | |
23025 | four.sect_off = sect_offset (three.length); | |
23026 | four.length = 7; | |
23027 | four.is_dwz = 1; | |
23028 | ||
23029 | std::vector<dwarf2_per_cu_data *> units; | |
23030 | units.push_back (&one); | |
23031 | units.push_back (&two); | |
23032 | units.push_back (&three); | |
23033 | units.push_back (&four); | |
23034 | ||
23035 | int result; | |
23036 | ||
23037 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23038 | SELF_CHECK (units[result] == &one); | |
23039 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23040 | SELF_CHECK (units[result] == &one); | |
23041 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23042 | SELF_CHECK (units[result] == &two); | |
23043 | ||
23044 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23045 | SELF_CHECK (units[result] == &three); | |
23046 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23047 | SELF_CHECK (units[result] == &three); | |
23048 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23049 | SELF_CHECK (units[result] == &four); | |
23050 | } | |
23051 | ||
23052 | } | |
23053 | } | |
23054 | ||
23055 | #endif /* GDB_SELF_TEST */ | |
23056 | ||
23745b47 | 23057 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 23058 | |
fcd3b13d SM |
23059 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
23060 | : per_cu (per_cu_), | |
9068261f AB |
23061 | mark (false), |
23062 | has_loclist (false), | |
23063 | checked_producer (false), | |
23064 | producer_is_gxx_lt_4_6 (false), | |
23065 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23066 | producer_is_icc (false), |
9068261f | 23067 | producer_is_icc_lt_14 (false), |
c258c396 | 23068 | producer_is_codewarrior (false), |
9068261f | 23069 | processing_has_namespace_info (false) |
93311388 | 23070 | { |
fcd3b13d SM |
23071 | per_cu->cu = this; |
23072 | } | |
23073 | ||
23074 | /* Destroy a dwarf2_cu. */ | |
23075 | ||
23076 | dwarf2_cu::~dwarf2_cu () | |
23077 | { | |
23078 | per_cu->cu = NULL; | |
9816fde3 JK |
23079 | } |
23080 | ||
23081 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23082 | ||
23083 | static void | |
95554aad TT |
23084 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23085 | enum language pretend_language) | |
9816fde3 JK |
23086 | { |
23087 | struct attribute *attr; | |
23088 | ||
23089 | /* Set the language we're debugging. */ | |
23090 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23091 | if (attr != nullptr) |
9816fde3 JK |
23092 | set_cu_language (DW_UNSND (attr), cu); |
23093 | else | |
9cded63f | 23094 | { |
95554aad | 23095 | cu->language = pretend_language; |
9cded63f TT |
23096 | cu->language_defn = language_def (cu->language); |
23097 | } | |
dee91e82 | 23098 | |
7d45c7c3 | 23099 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23100 | } |
23101 | ||
ae038cb0 DJ |
23102 | /* Increase the age counter on each cached compilation unit, and free |
23103 | any that are too old. */ | |
23104 | ||
23105 | static void | |
ed2dc618 | 23106 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
23107 | { |
23108 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
23109 | ||
23110 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
23111 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23112 | while (per_cu != NULL) | |
23113 | { | |
23114 | per_cu->cu->last_used ++; | |
b4f54984 | 23115 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
23116 | dwarf2_mark (per_cu->cu); |
23117 | per_cu = per_cu->cu->read_in_chain; | |
23118 | } | |
23119 | ||
23120 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23121 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
23122 | while (per_cu != NULL) | |
23123 | { | |
23124 | struct dwarf2_per_cu_data *next_cu; | |
23125 | ||
23126 | next_cu = per_cu->cu->read_in_chain; | |
23127 | ||
23128 | if (!per_cu->cu->mark) | |
23129 | { | |
fcd3b13d | 23130 | delete per_cu->cu; |
ae038cb0 DJ |
23131 | *last_chain = next_cu; |
23132 | } | |
23133 | else | |
23134 | last_chain = &per_cu->cu->read_in_chain; | |
23135 | ||
23136 | per_cu = next_cu; | |
23137 | } | |
23138 | } | |
23139 | ||
23140 | /* Remove a single compilation unit from the cache. */ | |
23141 | ||
23142 | static void | |
dee91e82 | 23143 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
23144 | { |
23145 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
23146 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23147 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
23148 | |
23149 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23150 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
23151 | while (per_cu != NULL) | |
23152 | { | |
23153 | struct dwarf2_per_cu_data *next_cu; | |
23154 | ||
23155 | next_cu = per_cu->cu->read_in_chain; | |
23156 | ||
dee91e82 | 23157 | if (per_cu == target_per_cu) |
ae038cb0 | 23158 | { |
fcd3b13d | 23159 | delete per_cu->cu; |
dee91e82 | 23160 | per_cu->cu = NULL; |
ae038cb0 DJ |
23161 | *last_chain = next_cu; |
23162 | break; | |
23163 | } | |
23164 | else | |
23165 | last_chain = &per_cu->cu->read_in_chain; | |
23166 | ||
23167 | per_cu = next_cu; | |
23168 | } | |
23169 | } | |
23170 | ||
dee91e82 DE |
23171 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23172 | We store these in a hash table separate from the DIEs, and preserve them | |
23173 | when the DIEs are flushed out of cache. | |
23174 | ||
23175 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23176 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23177 | or the type may come from a DWO file. Furthermore, while it's more logical |
23178 | to use per_cu->section+offset, with Fission the section with the data is in | |
23179 | the DWO file but we don't know that section at the point we need it. | |
23180 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23181 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23182 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23183 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23184 | |
dee91e82 | 23185 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23186 | { |
dee91e82 | 23187 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23188 | sect_offset sect_off; |
1c379e20 DJ |
23189 | struct type *type; |
23190 | }; | |
23191 | ||
dee91e82 | 23192 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23193 | |
23194 | static hashval_t | |
dee91e82 | 23195 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23196 | { |
9a3c8263 SM |
23197 | const struct dwarf2_per_cu_offset_and_type *ofs |
23198 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23199 | |
9c541725 | 23200 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23201 | } |
23202 | ||
dee91e82 | 23203 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23204 | |
23205 | static int | |
dee91e82 | 23206 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23207 | { |
9a3c8263 SM |
23208 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23209 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23210 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23211 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23212 | |
dee91e82 | 23213 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23214 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23215 | } |
23216 | ||
23217 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23218 | table if necessary. For convenience, return TYPE. |
23219 | ||
23220 | The DIEs reading must have careful ordering to: | |
85102364 | 23221 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23222 | reading current DIE. |
23223 | * Not trying to dereference contents of still incompletely read in types | |
23224 | while reading in other DIEs. | |
23225 | * Enable referencing still incompletely read in types just by a pointer to | |
23226 | the type without accessing its fields. | |
23227 | ||
23228 | Therefore caller should follow these rules: | |
23229 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23230 | before building the type and calling set_die_type. | |
e71ec853 | 23231 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23232 | possible before fetching more types to complete the current type. |
23233 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23234 | |
f792889a | 23235 | static struct type * |
1c379e20 DJ |
23236 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23237 | { | |
518817b3 SM |
23238 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23239 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 23240 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23241 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23242 | struct attribute *attr; |
23243 | struct dynamic_prop prop; | |
1c379e20 | 23244 | |
b4ba55a1 JB |
23245 | /* For Ada types, make sure that the gnat-specific data is always |
23246 | initialized (if not already set). There are a few types where | |
23247 | we should not be doing so, because the type-specific area is | |
23248 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23249 | where the type-specific area is used to store the floatformat). | |
23250 | But this is not a problem, because the gnat-specific information | |
23251 | is actually not needed for these types. */ | |
23252 | if (need_gnat_info (cu) | |
23253 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
23254 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
23255 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
23256 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
23257 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23258 | && !HAVE_GNAT_AUX_INFO (type)) |
23259 | INIT_GNAT_SPECIFIC (type); | |
23260 | ||
3f2f83dd KB |
23261 | /* Read DW_AT_allocated and set in type. */ |
23262 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23263 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23264 | { |
09ba997f | 23265 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23266 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23267 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
23268 | } |
23269 | else if (attr != NULL) | |
23270 | { | |
b98664d3 | 23271 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23272 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23273 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23274 | } |
23275 | ||
23276 | /* Read DW_AT_associated and set in type. */ | |
23277 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23278 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23279 | { |
09ba997f | 23280 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23281 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23282 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
23283 | } |
23284 | else if (attr != NULL) | |
23285 | { | |
b98664d3 | 23286 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23287 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23288 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23289 | } |
23290 | ||
3cdcd0ce JB |
23291 | /* Read DW_AT_data_location and set in type. */ |
23292 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d | 23293 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
09ba997f | 23294 | cu->per_cu->addr_type ())) |
50a82047 | 23295 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 23296 | |
dee91e82 | 23297 | if (dwarf2_per_objfile->die_type_hash == NULL) |
0335378b TT |
23298 | dwarf2_per_objfile->die_type_hash |
23299 | = htab_up (htab_create_alloc (127, | |
23300 | per_cu_offset_and_type_hash, | |
23301 | per_cu_offset_and_type_eq, | |
23302 | NULL, xcalloc, xfree)); | |
1c379e20 | 23303 | |
dee91e82 | 23304 | ofs.per_cu = cu->per_cu; |
9c541725 | 23305 | ofs.sect_off = die->sect_off; |
1c379e20 | 23306 | ofs.type = type; |
dee91e82 | 23307 | slot = (struct dwarf2_per_cu_offset_and_type **) |
0335378b | 23308 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23309 | if (*slot) |
b98664d3 | 23310 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23311 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23312 | *slot = XOBNEW (&objfile->objfile_obstack, |
23313 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23314 | **slot = ofs; |
f792889a | 23315 | return type; |
1c379e20 DJ |
23316 | } |
23317 | ||
9c541725 | 23318 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23319 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23320 | |
23321 | static struct type * | |
9c541725 | 23322 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 23323 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 23324 | { |
dee91e82 | 23325 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 23326 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 23327 | |
dee91e82 | 23328 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23329 | return NULL; |
1c379e20 | 23330 | |
dee91e82 | 23331 | ofs.per_cu = per_cu; |
9c541725 | 23332 | ofs.sect_off = sect_off; |
9a3c8263 | 23333 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
0335378b | 23334 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23335 | if (slot) |
23336 | return slot->type; | |
23337 | else | |
23338 | return NULL; | |
23339 | } | |
23340 | ||
02142a6c | 23341 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23342 | or return NULL if DIE does not have a saved type. */ |
23343 | ||
23344 | static struct type * | |
23345 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23346 | { | |
9c541725 | 23347 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
23348 | } |
23349 | ||
10b3939b DJ |
23350 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23351 | ||
23352 | static void | |
23353 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23354 | struct dwarf2_per_cu_data *ref_per_cu) | |
23355 | { | |
23356 | void **slot; | |
23357 | ||
23358 | if (cu->dependencies == NULL) | |
23359 | cu->dependencies | |
23360 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23361 | NULL, &cu->comp_unit_obstack, | |
23362 | hashtab_obstack_allocate, | |
23363 | dummy_obstack_deallocate); | |
23364 | ||
23365 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23366 | if (*slot == NULL) | |
23367 | *slot = ref_per_cu; | |
23368 | } | |
1c379e20 | 23369 | |
f504f079 DE |
23370 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23371 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23372 | cache that we must keep because we are keeping CU. */ |
23373 | ||
10b3939b DJ |
23374 | static int |
23375 | dwarf2_mark_helper (void **slot, void *data) | |
23376 | { | |
23377 | struct dwarf2_per_cu_data *per_cu; | |
23378 | ||
23379 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23380 | |
23381 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23382 | reading of the chain. As such dependencies remain valid it is not much | |
23383 | useful to track and undo them during QUIT cleanups. */ | |
23384 | if (per_cu->cu == NULL) | |
23385 | return 1; | |
23386 | ||
10b3939b DJ |
23387 | if (per_cu->cu->mark) |
23388 | return 1; | |
9068261f | 23389 | per_cu->cu->mark = true; |
10b3939b DJ |
23390 | |
23391 | if (per_cu->cu->dependencies != NULL) | |
23392 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23393 | ||
23394 | return 1; | |
23395 | } | |
23396 | ||
f504f079 DE |
23397 | /* Set the mark field in CU and in every other compilation unit in the |
23398 | cache that we must keep because we are keeping CU. */ | |
23399 | ||
ae038cb0 DJ |
23400 | static void |
23401 | dwarf2_mark (struct dwarf2_cu *cu) | |
23402 | { | |
23403 | if (cu->mark) | |
23404 | return; | |
9068261f | 23405 | cu->mark = true; |
10b3939b DJ |
23406 | if (cu->dependencies != NULL) |
23407 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23408 | } |
23409 | ||
23410 | static void | |
23411 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23412 | { | |
23413 | while (per_cu) | |
23414 | { | |
9068261f | 23415 | per_cu->cu->mark = false; |
ae038cb0 DJ |
23416 | per_cu = per_cu->cu->read_in_chain; |
23417 | } | |
72bf9492 DJ |
23418 | } |
23419 | ||
72bf9492 DJ |
23420 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23421 | is its offset in .debug_info for this objfile. */ | |
23422 | ||
23423 | static hashval_t | |
23424 | partial_die_hash (const void *item) | |
23425 | { | |
9a3c8263 SM |
23426 | const struct partial_die_info *part_die |
23427 | = (const struct partial_die_info *) item; | |
9a619af0 | 23428 | |
9c541725 | 23429 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23430 | } |
23431 | ||
23432 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23433 | are equal if they have the same offset. */ | |
23434 | ||
23435 | static int | |
23436 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23437 | { | |
9a3c8263 SM |
23438 | const struct partial_die_info *part_die_lhs |
23439 | = (const struct partial_die_info *) item_lhs; | |
23440 | const struct partial_die_info *part_die_rhs | |
23441 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23442 | |
9c541725 | 23443 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23444 | } |
23445 | ||
3c3bb058 AB |
23446 | struct cmd_list_element *set_dwarf_cmdlist; |
23447 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
23448 | |
23449 | static void | |
981a3fb3 | 23450 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 23451 | { |
b4f54984 | 23452 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 23453 | gdb_stdout); |
ae038cb0 DJ |
23454 | } |
23455 | ||
23456 | static void | |
981a3fb3 | 23457 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 23458 | { |
b4f54984 | 23459 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
23460 | } |
23461 | ||
9291a0cd | 23462 | static void |
cd4fb1b2 SM |
23463 | show_check_physname (struct ui_file *file, int from_tty, |
23464 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23465 | { |
cd4fb1b2 SM |
23466 | fprintf_filtered (file, |
23467 | _("Whether to check \"physname\" is %s.\n"), | |
23468 | value); | |
9291a0cd TT |
23469 | } |
23470 | ||
6c265988 | 23471 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23472 | void |
6c265988 | 23473 | _initialize_dwarf2_read () |
9291a0cd | 23474 | { |
cd4fb1b2 SM |
23475 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
23476 | Set DWARF specific variables.\n\ | |
590042fc | 23477 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
23478 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23479 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23480 | |
cd4fb1b2 | 23481 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
23482 | Show DWARF specific variables.\n\ |
23483 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
23484 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23485 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23486 | |
cd4fb1b2 SM |
23487 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23488 | &dwarf_max_cache_age, _("\ | |
23489 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23490 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23491 | A higher limit means that cached compilation units will be stored\n\ | |
23492 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23493 | caching, which can slow down startup."), | |
23494 | NULL, | |
23495 | show_dwarf_max_cache_age, | |
23496 | &set_dwarf_cmdlist, | |
23497 | &show_dwarf_cmdlist); | |
156942c7 | 23498 | |
cd4fb1b2 SM |
23499 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23500 | Set debugging of the DWARF reader."), _("\ | |
23501 | Show debugging of the DWARF reader."), _("\ | |
23502 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23503 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23504 | information. A value greater than 1 provides more verbose information."), | |
23505 | NULL, | |
23506 | NULL, | |
23507 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23508 | |
cd4fb1b2 SM |
23509 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23510 | Set debugging of the DWARF DIE reader."), _("\ | |
23511 | Show debugging of the DWARF DIE reader."), _("\ | |
23512 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23513 | The value is the maximum depth to print."), | |
23514 | NULL, | |
23515 | NULL, | |
23516 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23517 | |
cd4fb1b2 SM |
23518 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23519 | Set debugging of the dwarf line reader."), _("\ | |
23520 | Show debugging of the dwarf line reader."), _("\ | |
23521 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23522 | A value of 1 (one) provides basic information.\n\ | |
23523 | A value greater than 1 provides more verbose information."), | |
23524 | NULL, | |
23525 | NULL, | |
23526 | &setdebuglist, &showdebuglist); | |
437afbb8 | 23527 | |
cd4fb1b2 SM |
23528 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23529 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23530 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23531 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23532 | the demangler."), | |
23533 | NULL, show_check_physname, | |
23534 | &setdebuglist, &showdebuglist); | |
900e11f9 | 23535 | |
e615022a DE |
23536 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23537 | no_class, &use_deprecated_index_sections, _("\ | |
23538 | Set whether to use deprecated gdb_index sections."), _("\ | |
23539 | Show whether to use deprecated gdb_index sections."), _("\ | |
23540 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23541 | Normally they are ignored either because of a missing feature or\n\ | |
23542 | performance issue.\n\ | |
23543 | Warning: This option must be enabled before gdb reads the file."), | |
23544 | NULL, | |
23545 | NULL, | |
23546 | &setlist, &showlist); | |
23547 | ||
f1e6e072 TT |
23548 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
23549 | &dwarf2_locexpr_funcs); | |
23550 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23551 | &dwarf2_loclist_funcs); | |
23552 | ||
23553 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23554 | &dwarf2_block_frame_base_locexpr_funcs); | |
23555 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23556 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
23557 | |
23558 | #if GDB_SELF_TEST | |
23559 | selftests::register_test ("dw2_expand_symtabs_matching", | |
23560 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
23561 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
23562 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 23563 | #endif |
6502dd73 | 23564 | } |